Search Results — 2000 specimen records retrieved (1612 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  RSA384184  Abies concolor L. Ahart, Peter Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge 1 mile N of Golden Trout Crossing and 18 miles [10 road miles] E of Feather Falls [community]. 700 Comment
Read comments
Apr 30 2014
  UC1171590  Acer circinatum R. Bacigalupi 1934-9-2 2326 Butte along Chico-Butte Meadows Road 10 mi sw Butte Meadows (Canyon of W Fork of Campbell Creek); Lassen National Forest, Chico Quad., W Fork Campbell Cr Comment
  UC525805  Acer circinatum Rimo Bacigalupi 1934-9-2 2326 Butte 9 mi sw Butte Meadows (West Fork of Campbell Creek along Chico-Butte Meadows road); West Fork of Campbell Creek 914 Comment
  UC203618  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canyon of Chico Creek Comment
  UC109199  Acer negundo var. californicum Mrs. R. M. Austin May 1883 262 Butte w Chico (Sacramento River); , w of Chico Comment
  CHSC105812  Achillea millefolium Lowell Ahart 2010-9-21 17216 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
  UCD50598  Achnatherum lemmonii Elizabeth Wilson 1940-6-21 s.n. Butte Butte County, near De Sabla, California. Comment
  RSA268070  Achnatherum lemmonii var. lemmonii J. R. Reeder, C. G. Reeder 1972-6-6 5654 Butte Ca. 4 miles N of Forest Ranch. 1067 Comment
  CAS-BOT-BC217019  Achnatherum occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak at Humboldt Summmit 2158 Comment
  UC1594726  Achnatherum occidentale subsp. californicum Lowell Ahart 1992-7-26 6843 Butte 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain; w of small stream) 1767 Comment
  CHSC6686  Achyrachaena mollis Marilyn Lee 1968-4-19 136 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  CHSC38502  Acmispon americanus var. americanus Vernon Oswald 1983-6-9 663 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 213 Comment
  JEPS98263  Acmispon argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC39499  Acmispon brachycarpus Lowell Ahart 1983-5-28 4022 Butte Above the trail to the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  SD122541  Acmispon glaber Lowell Ahart, Peter Ahart 1984-6-10 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland 500 Comment
  CHSC104752  Acmispon grandiflorus var. macranthus L. P. Janeway 2010-6-19 10022 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC74088  Acmispon grandiflorus var. macranthus B. Castro; E. Hubert 1996-7-16 683 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on SE-facing slope of recently burned area. 1188 Comment
  CHSC39540  Acmispon nevadensis Lowell Ahart 1983-5-28 4016 Butte Along a trail to Feather Falls, about 1/2 mile south of the falls, about 5 miles north of the town of Feather Falls. 600 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  SEINET12765093  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CHSC113915  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  UCD104482  Acmispon wrangelianus Rimo Bacigalupi; L. R. Heckard 1963-5-14 8857 Butte Along Humbug Road, bottom of Butte Creek Canyon, about 2 miles above and east of its beginning at junction with Paradise Skyway. 91 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  CHSC4676  Adenocaulon bicolor R. Carter 1966-6-15 430 Butte 1/4 mi. E of Big Bald Rock in campgrounds along S side of small creek that runs through campgrounds. 944 Comment
  CHSC20048  Adenostoma fasciculatum M. S. Taylor 1975-4-25 494 Butte Ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC24871  Adiantum aleuticum T. L. Reynolds 1976-4-23 59 Butte Small population, ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC27957  Adiantum jordanii M. S. Taylor 1979-3-20 1942 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca.10 mi n of Oroville. 304 Comment
  UCD80687  Adiantum jordanii CNPS SN Foothill Team 2005-4-6 SNFN 0097 b Butte CDFG North Table Mountain Wildlife Area, on the north-facing slope of the south fork of Coal Canyon, approximately half-way down slope from the Table Top before creek. 377 Comment
  CHSC21908  Aesculus californica Robert A. Schlising; Et al 1964-6-11 2722 Butte Few miles south of Paradise along Honeyrun Road. Comment
  CHSC45667  Ageratina occidentalis Vernon Oswald 1987-7-16 3124 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CAS-BOT-BC22966  Agoseris heterophylla A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) 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
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  UC726518  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1074 Comment
  JEPS95966  Agrostis avenacea Lowell Ahart 1999-6-12 8088 Butte 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
  CHSC49500  Agrostis capillaris Vernon Oswald 1984-7-31 1640 Butte Humboldt R. at the Willow Creek-Colby Creek bridge. 1487 Comment
  CHSC31729  Agrostis exarata L. Ahart 1977-6-16 1422 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA129582  Agrostis exarata H. S. Yates 1936-8-13 6105 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  UC1594714  Agrostis exarata Lowell Ahart 1992-8-2 6907 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  JEPS116027  Agrostis gigantea Lowell Ahart 2009-7-9 16006 Butte On the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC40448  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC6144  Agrostis microphylla E. Parreno 1968-4-19 71 Butte NE of Municipal Golf in Upper Bidwell Park at side of ridge, Chico. Comment
  CHSC6694  Agrostis microphylla Marilyn Lee 1968-4-19 139 Butte On W side of Cherokee Road, Table Mt. Comment
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC78355  Agrostis pallens Lowell Ahart 2000-6-29 8538 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
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  UC1586513  Agrostis thurberiana Vernon H. Oswald and Lowell Ahart 1991-8-19 4836 Butte n side Forest Rd. 25N15 (between Philbrook Reservoir and Coon Hollow) 1767 Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  CAS-BOT-BC138579  Agrostis variabilis V. Oswald; L. Ahart 1988-8-16 3692 Butte Ca. 5 miles (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2103 Comment
  CHSC50065  Aira caryophyllea Lowell Ahart 1990-1-17 6408 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprisa Bridge across Lake Oroville. 289 Comment
  UC1130794  Aira caryophyllea J. E. Sowder 1933-6-20 86 Butte 1 1/4 mi n Yankee Hill; Chico Quadrangle Comment
  SEINET10507042  Aira caryophyllea Lowell Ahart 1983-4-1 Ahart 3913 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC138411  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2191 Butte Near Hurleton. 600 Comment
  CHSC46618  Alisma lanceolatum Vernon H. Oswald 1988-8-5 3618 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). 85 Comment
  JEPS122219  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC96091  Alisma triviale L. P. Janeway 2006-7-19 8817 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC445435  Alisma triviale A. A. Heller 1914-7-31 11630 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road, 6 miles from Chico. Comment
  JEPS116048  Allium amplectens Lowell Ahart 2009-4-17 15560 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  POM169682  Allium amplectens A. A. Heller, H. E. Brown 1902-5-7 2917 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  CAS-BOT-BC465444  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  SEINET12046121  Allium howellii J. D. Mott 1978-1 19 Butte .5 mi E of Monk's store, Cohasset Stage Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 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
  CHSC7129  Allium peninsulare Nancy Wiseman 1969-5-5 Butte Across the creek from Chico Municipal Golf Course Club House, Chico. Comment
  CHSC88084  Allium peninsulare var. peninsulare R. D. Fischer 2004-4-2 168 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on road edge. 381 Comment
  CAS-BOT-BC132071  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. Se. of Oroville on road to Wyandotte 121 Comment
  RSA112747  Allium peninsulare var. peninsulare E. K. Balls, Lee W. Lenz 1955-5-13 20696 Butte About 1 mile NE of Pentz trading post on road to U. S. highway 40. From Oroville-Magalia road. 305 Comment
  JEPS117692  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 741 Comment
  CHSC27033  Allophyllum divaricatum Robert A. Schlising 1978-6-11 3291 Butte Along Cohasset Rd, below Cohasset, 5.5 mi NE of crossing of Mud Cr and 5.3 mi NE jct of rd to Richardson's Springs; ridge top. Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC170911  Alnus rhombifolia Javier Penalosa 1962-6-18 2440 Butte Near confluence of French and Peavine Crks. 609 Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC42837  Alopecurus aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC600597  Alopecurus aequalis E. B. Copeland August, 1930 10 Butte above Jonesville Jonesville 1650 Comment
  CHSC42836  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte 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
  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
  RSA0118722  Alopecurus carolinianus Lowell A. Ahart 2014-4-16 19368 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  RSA500432  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3. mi (air) se of Jonesville. 1768 Comment
  SEINET10511198  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca.2 mi ne of Honcut. Valley Grassland. 50 Comment
  JEPS120614  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  CHSC66429  Amaranthus blitoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7751 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 E side of Fish Camp, Riparian Sanctuary. 28 Comment
  CDA23710  Amaranthus palmeri L. Ahart 2000-7-23 8605 Butte On the west edge and side of the Midway, north of Butte Creek, about 2 1/2 miles south of Durham. Comment
  CDA3282  Amaranthus retroflexus L. 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. Comment
  CDA3283  Amaranthus rudis L. Ahart 1999-9-21 8267 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
  JEPS115265  Ambrosia psilostachya Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC110332  Ammannia coccinea B. Castro; Margie Graham 2013-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC113529  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte Near a small drainage, 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. 88 Comment
  UCD102875  Ammannia robusta W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  JEPS119774  Amorpha fruticosa Lowell Ahart 2012-5-12 18027 Butte About 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CHSC46818  Amsinckia eastwoodiae R. A. Schlising 1985-4-8 4461 Butte West of Table Mt., along Table Mt. Blvd., NW of crossing of Campbell Creek. Comment
  CHSC103690  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC33136  Amsinckia intermedia J. D. Jokerst 1980-4-17 592 Butte Top of North Table Mt at its northern most tip. 472 Comment
  JEPS107293  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UCD169393  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte North of Spruce Street, Gridley; east of the railroad tracks. 28 Comment
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  RSA0090927  Amsinckia intermedia var. eastwoodiae C. C. Bruce 1897-05 1926 Butte [No locality information provided] Comment
  CHSC20115  Anagallis arvensis M. S. Taylor 1975-4-26 517 Butte Scattered on creek bank, in meadow ca. 50 m e of Kunkle Reservoir, ca. 50 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC81542  Anagallis arvensis Sabrina Wright 2000-4-27 Butte Chico. Verbena Ave., in flower bed. 60 Comment
  SEINET10507169  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
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 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
  CHSC101270  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC14026  Anthriscus caucalis J. A Brattan 1974-4-15 5 Butte Abundant at the base of a cliff 300 yds s of the 9th hole on the Bidwell Municipal Golf Course. 91 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
  UC1563259  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville 266 Comment
  CHSC38681  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1983-6-9 660 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 256 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
  CHSC117333  Antirrhinum vexillocalyculatum subsp. intermedium L. P. Janeway 2016-8-8 12142 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC44219  Aphyllon purpureum V. Oswald; L. Ahart 1988-7-13 3575 Butte Road to High Lakes e of Philbrook Reservoir. On a steep outcropping on the n side of the road. 1859 Comment
  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
  RSA193352  Apocynum androsaemifolium subsp. pumilum E. B. Copeland 1930-7-7 s.n. Butte Jonesville. 1650 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  UCD121510  Apocynum cannabinum L. Ahart 1977-6-13 1414 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  UC455227  Aquilegia formosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC52680  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 302 Butte E part of county, ca. 1.0 mi NE of Mountain House. 1024 Comment
  CHSC40357  Aralia californica Lowell Ahart 1985-9-7 5106 Butte Bottom and sides of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles south-west of Forbestown. 548 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC102006  Arceuthobium abietinum L. P. Janeway; David Toren 2009-9-15 9953 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Wildcat Creek and Bear Ranch Creek, 3.6 air km north of Road 23N31. 1419 Comment
  CHSC43250  Arceuthobium abietinum Lowell Ahart 1987-10-8 5911 Butte Along the dirt road, about 1 1/4 miles south of the Lost Creek Reservoir. 1066 Comment
  SEINET10837606  Arceuthobium abietinum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  SEINET10969532  Arceuthobium campylopodum Mary Susan Taylor 1975-9-19 Taylor 911 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UCD101924  Arceuthobium campylopodum Professor Gilmore 1927-10-1 815 Butte Bangor. Comment
  SEINET10492825  Arceuthobium occidentale Mary Susan Taylor 1979-3-20 Taylor 1953 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA629062  Arctostaphylos Jon E. Keeley 1983-6-27 7816 Butte Highway 70 and Magolia Pentz Road. Comment
  CAS-BOT-BC27257  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Comment
  CHSC67933  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1684 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633003  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27446 Butte East of Chico, Cohasset Road. 170 Comment
  SD60289  Arctostaphylos manzanita A. A. Heller 1928-1-17 14473 Butte 1.0 mile below the Ten Mile House east of Chico. Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CHSC109137  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  JEPS119835  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA122404  Arctostaphylos manzanita subsp. manzanita J. E. Sowder 1933-11-27 134 Butte 2 mi. N. 1/4 mi. E. of Hog Spring. 335 Comment
  SEINET11998375  Arctostaphylos manzanita subsp. roofii W. Knight, Knight, I. 1989-1 6496 Butte 0.6 mi S of summit of Cohasset Rd 518 Comment
  UC725305  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise Comment
  UCD52296  Arctostaphylos mewukka James I. Mallory 1968-6-12 290 Butte 4 miles south of Brush Creek Ranger Station; Plumas National Forest. 640 Comment
  CAS-BOT-BC38606  Arctostaphylos mewukka subsp. truei J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1683 Butte Top of North Table Mt., at its NW corner, center W edge of section 32. Comment
  CAS-BOT-BC45571  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  SD3596  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge E of the Summit. 2100 Comment
  CHSC34804  Arctostaphylos patula M. S. Taylor 1980-5-8 2602 Butte Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32. 853 Comment
  LA42219  Arctostaphylos patula H. F. Copeland; 1932-6-29 A 7 Butte Jonesville, the Summit Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  CAS-BOT-BC48297  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51084 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 Butte N side of spur rd 1/4 mi W of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  UC535028  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte about 12 mi from Chico; Humboldt Grade Comment
  CHSC78358  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC26759  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On the s side of Pentz Rd. Ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC38263  Aristolochia californica Vernon Oswald 1983-2-14 68 Butte Upper Bidwell Park, beside the trail along Chico Creek ca. 100 ft. e of the power lines. 91 Comment
  UCD137823  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  CAS-BOT-BC82415  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte along the south edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles 1524 Comment
  CAS-BOT-BC90285  Artemisia douglasiana A. A. Heller 1928-6-20 14693 Butte Butte Meadows, along Butte Creek Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  RSA769225  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte East side of Big Chico Creek, southwest of meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  SBBG17264  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Rd, 3 mi NE of Centerville Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  CHSC102168  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET10904920  Aster oregonensis subsp. californicus Mary Susan Taylor 1977-8-17 Taylor 1502 Butte On E side of the Skyway, at Inskip. 1615 Comment
  CHSC69444  Aster radulinus Lowell Ahart 1997-9-6 7892 Butte About 1 1/2 miles north of Oakway, about 3 miles (air) northwest of Flea Mountain, about 3 miles (air) northeast of Sawmill Peak, about 5 miles (air) north of Concow Reservoir. 762 Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC109163  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC29234  Astragalus pauperculus M. S. Taylor 1980-3-15 2380 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  UC765009  Astragalus pauperculus R. F. Hoover 1938-4-24 3236 Butte 3 mi n Chico; n of Chico Comment
  RSA415678  Astragalus purshii var. tinctus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CAS-BOT-BC193219  Astragalus tener var. ferrisiae Mrs. C. C. Bruce 1898-5-1 2432 Butte Sacramento River Comment
  CAS-BOT-BC66024  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  UC399389  Athyrium filix-femina var. cyclosorum Mrs. Carlotta C. Hall July 1914 9801 Butte Jonesville Comment
  CHSC10741  Athysanus pusillus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CHSC31391  Avena barbata J. D. Jokerst 1979-4-13 1200 Butte Top of North Table Mt in the vicinity of Coal Cr Canyon. 396 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  SEINET11682807  Avena fatua B. K. Madsen 1970-1 29 Butte ca 300 yds N of Honeyrun Rd, 1.5 mi NE of covered bridge at jct Humbug & Honeyrun Rds, E of Chico 229 Comment
  CHSC10836  Avena sativa Lowell Ahart 1962-5-20 Butte Ahart Ranch, Honcut. 39 Comment
  CHSC2123  Avena sativa H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. Chico. 57 Comment
  POM312949  Azolla microphylla Herbert L. Mason, Verne Grant 1946-8-14 13018 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  CHSC21176  Baccharis douglasii M. S. Taylor 1975-10-29 971 Butte On N side of Butte Creek, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  CAS-BOT-BC98006  Baccharis pilularis Lowell Ahart 1975-1-25 s.n. Butte Near Princeton Ferry 30 Comment
  CHSC78991  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte About 50 yards south of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  SEINET7239573 Image available Baccharis pilularis R. McKee 1919-10-20 s.n. Butte Chico Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  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
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  JEPS87167  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte Thermalito Diversion Pool Lake Oroville Recreation Area (n side, along the first stream w of spillway and ca 2.0 mi n of Burma Rd.) 76 Comment
  CHSC42511  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  CHSC31682  Bergia texana L. Ahart 1974-7-19 553 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50994  Bergia texana Lowell Ahart 1990-8-15 6578 Butte Near McCabe Creek, below the high-water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  SBBG119802  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yds E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CAS-BOT-BC102071  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte Chico, on Big Chico creek Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  NY31005  Blennosperma californicum H. E. Brown 1897-3-3 146 - Butte Near Clear Creek 53.3 Comment
  CHSC7141  Blennosperma nanum Bryan C. Willingham 1969-3-13 2 Butte Ca. 3 mi SE of Chico. S of Skyway and ca 1 mi NW of Butte Creek. 91 Comment
  HSC23358  Blennosperma nanum var. nanum L. Walk 1971-3-14 2 Butte E side of Cherokee Rd., ca. 0.7 mile S of Oregon City Junction and ca. 50 yards from the road 610 Comment
  CHSC28766  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 248 Butte On cliffs composing the S.E. bank of Little Chico Cr. 198 Comment
  CHSC28767  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 249 Butte On N. sides of lava boulders S. (within 100 yds.) of Little Chico Cr. 243 Comment
  JEPS94330  Boykinia major Lowell Ahart 1997-8-1 7796 Butte about 8 air mi ne of Stirling City (on bottom of of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1371 Comment
  SEINET10483033  Boykinia major Mary Susan Taylor 1982-8-16 Taylor 5018 Butte T24N R5E nw/nw sec 17. Pulga NW quad. S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. Riparian; 4700 ft. 1432 Comment
  CHSC43741  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff ca. 8 ft above the summer level of the rain. 91 Comment
  CHSC43743  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  RSA443119  Boykinia occidentalis L. Ahart 1985-6-30 5075 Butte E of the dirt road to the Forbestown Res. About 2.5 miles NE of Forbestown. 869 Comment
  UC641679  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 mi e of Oroville 152 Comment
  CDA10540  Brickellia californica D. G. Kelch 2006-8-2 6 .348 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS119924  Brickellia californica Lowell Ahart 2012-10-20 18496 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
  SBBG128796  Brickellia californica L. Ahart 2012-10-20 18496 Butte soil and gravel bar on S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CAS-BOT-BC145530  Briza minor A. A. Heller 1913-5-25 10762 Butte Near Pents. 152 Comment
  CAS-BOT-BC145532  Briza minor A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC145537  Briza minor Lowell Ahart 1980-5-17 2279 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CAS-BOT-BC145539  Briza minor Lowell Ahart 1980-4-30 2133 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC56623  Briza minor J. Lund 1980-4-19 Butte On a trail leading up to the falls above Richardson Springs, northeast of Chico. 121 Comment
  SEINET201433  Brodiaea californica Rimo Bacigalupi, G. Bacigalupi; Heckard Sanderson 1952-6-20 3752 Butte Along road from Oroville to Forbestown 1.2 miles west of Hurleton 442 Comment
  CHSC2074  Brodiaea elegans E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC45016  Brodiaea elegans Diane Mastalir 1988-4-25 19 Butte Bidwell Park Chico, 1.6 mi ne of Wildwood Ave on Upper Park Rd., 0.3 mi nw. 109 Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC39506  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  SBBG119800  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte ca. 20 yds E of poor dirt rd and 100 yds S of cabin, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1569 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
  UC1609247  Bromus carinatus var. carinatus Lowell Ahart 1993-6-16 6964 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  UC1131009  Bromus commutatus C. G. Albertus 1933-6-6 14 Butte 1 mi w of Nelson's Bar 274 Comment
  CHSC2133  Bromus diandrus H. Silberman; D. Isaac 1949-5-9 Butte W. side of football field, CSC campus. 54 Comment
  CHSC56625  Bromus diandrus J. M. Lund 1980-2-24 Butte Chico; 0.5 mi north of East Avenue on the west edge of Hwy 99. 76 Comment
  UCR237316  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18734 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  RSA700239  Bromus inermis L. Ahart 2004-7-23 11307 Butte on the west side of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1508 Comment
  JEPS113901  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 N-NE of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  UCD58928  Bromus laevipes Beecher Crampton 1965-6-17 7383 Butte Butte-Yuba Co. Border: Just west of Rackerby Store. La Porte Road. 420 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM183184  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  UC392233  Bromus orcuttianus E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  UCD59068  Bromus orcuttianus G. F. Hrusa; T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx 3 mi. N of Magalia. 800 Comment
  SEINET10868251  Bromus rubens Leverton 1974-4-10 LEVERTON s.n. Butte Abundant along East Avenue, ca. .5 mile E of Mangrove Avenue, Chico. Associates: Bromus inermis, Lolium multiflorum. Comment
  CHSC59039  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  NY664734  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather river near Stirling Comment
  CHSC60865  Bromus vulgaris Vernon H. Oswald; Lowell Ahart 1993-6-22 5562 Butte Long Ravine W of Stirling City, along the road in the ravine just N of the Diversion Dam for Hendricks Canal. 960 Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CAS-BOT-BC18158  Bulbostylis capillaris J. D. Jokerst 1980-7-18 994 Butte Top of North Table Mountain, ca. 200 meters northwest of junction of Cherokee Road and the east edge of Table Mountain. Comment
  CHSC61340  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte About 2 1/2 mi NE of Bald Mountain, about 6 1/2 mi NE of Stirling City. 1584 Comment
  CHSC78274  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  HSC95509  Calamagrostis canadensis var. langsdorffii L. Ahart 1997-7-11 7757 Butte About 1/4 mi. (air) E of Bald Mtn., about 4 mi. (air) NE of Stirling City, E of the dirt road 1677 Comment
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC97379  Callitriche heterophylla var. bolanderi Paul Maslin 2006-5-3 37 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609374E 4410375N. 342 Comment
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CDA35769  Calochortus albus J. R. Keck Jr., D. Pooler 1980-5-19 PDR# 330181 Butte Paradise; Jordan Hill Road. 0 Comment
  CHSC7133  Calochortus luteus M. A. Davis 1969-4-19 4 Butte Comment
  CAS-BOT-BC491846  Calochortus luteus Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CAS-BOT-BC491850  Calochortus luteus H. E. Brown 1897-5-1 206 Butte Near Clear Creek Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CAS-BOT-BC491859  Calochortus luteus H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles south west of Oroville, hwy. 24 Comment
  RSA113891  Calochortus luteus E. K. Balls, Lee W. Lenz 1955-5-13 20482 Butte 3.2 miles north of Oroville on road to Magalia and Paradise 122 Comment
  SEINET12044178  Calochortus luteus L. S. Rose 1931-1 s.n. Butte Coast Ranges and foothills of Sierra Nevada Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC3421  Calochortus monophyllus Judy Potter 1966-4-17 212 Butte Across from 5174 Pentz-Magalia Road, (now 5081 Wilderness Way/Pentz Rd, as of 2/4/1987). Comment
  CHSC3835  Calochortus monophyllus L. E. Dunkel 1965-4-20 27 Butte Ca. 50 yards e of Monk's Store on Cohasset Road. 670 Comment
  CAS-BOT-BC492605  Calochortus monophyllus Mrs. J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  SEINET12048524  Calochortus monophyllus G. C. Russell 1975-1 1 Butte 8.2 km NE of Chico Municipal Airport 325 Comment
  RSA112700  Calochortus nudus E. K. Balls, Lee W. Lenz 1955-5-13 20698 Butte 7 miles northeast from Pentz Trading Station on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  CAS-BOT-BC493341  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  RSA255537  Calycadenia ciliosa Gerald D. Carr 1971-6-15 563 Butte 0.4 miles west of east boundary of Upper Bidwell Park, southeast of Chico Comment
  CAS-BOT-BC273291  Calycadenia fremontii David D. Keck 1933-5-31 2408 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  SEINET3863981  Calycadenia fremontii R. L. Carr 1978-7-7 1978 Butte Ne of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave, roadside.; 0 232 Comment
  UCD129684  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico. Comment
  CAS-BOT-BC106084  Calycadenia oppositifolia John Thomas Howell 1955-6-15 30509 Butte West Branch of North Fork of Feather River 182 Comment
  POM284479  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  SBBG7833  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 mi N of Chico on Richardson Springs Rd Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  CHSC84753  Calycadenia truncata L. P. Janeway; John Hunt 2003-6-20 7857 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
  CHSC88242  Calycadenia truncata Lowell Ahart 2004-7-11 11222 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
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  POM68555  Calycanthus occidentalis C. C. Bruce 1897-06 1822 `` Butte Big Chico Comment
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  UC1136670  Calyptridium monospermum P. L. Johannsen 1936-7-21 954 Butte 1/2 mi e of Chaparral House (Lassen National Forest); Lassen National Forest 1584 Comment
  JEPS110268  Calystegia atriplicifolia subsp. buttensis Lowell Ahart 2006-6-24 12858 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  RSA718788  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range: Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  UC436302  Calystegia malacophylla subsp. malacophylla E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  SEINET10496587  Calystegia occidentalis Mary Susan Taylor 1979-6-12 Taylor 2299 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. 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
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  UC1609041  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte sides of small stream s Fall River (1/8 mi s of campgrounds on the large gravel bar along Fall River, about 6 air mi ne of Feather Falls) 1036 Comment
  CHSC90646  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  RSA715889  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC3612  Cardamine californica R. Jaegel 1966-3-2 19 Butte Collected 6 miles Northeast of Chico, in Upper Bidwell Park along the north bank of Butte Creek. Comment
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC37883  Cardamine oligosperma Lowell Ahart 1980-5-4 2167 Butte Thermalito. 65 Comment
  CHSC39612  Cardamine oligosperma Lowell Ahart 1983-3-28 3910 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  JEPS116041  Cardamine oligosperma Lowell Ahart, John Dittes 2009-3-20 15505 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
  JEPS87504  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  RSA715722  Cardamine oligosperma L. P. Janeway 2005-3-1 8335 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  RSA769604  Cardamine oligosperma L. Ahart, John Dittes 2009-3-20 1505 Butte Open area along 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
  CHSC91981  Cardamine pachystigma LeRoy E. Detling 1935-4-18 1634 Butte 15 miles north of Oroville, North Fork Feather River. Comment
  UCD114525  Cardamine parviflora A. A. Heller 1914-4-14 11290 Butte 8 miles north of Oroville. Comment
  JEPS122273  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC43872  Carex amplifolia L. P. Janeway 1987-6-26 2324 Butte Mdw just W of Logue Meadows along road to Lynch Meadows. 1325 Comment
  NY25690  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville 1554.5 Comment
  CHSC45146  Carex athrostachya Lowell Ahart 1981-8-15 3044 Butte On the drying bottom of Snag Lake, about 10 miles north of Inskip. 1737 Comment
  CAS-BOT-BC19103  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC45147  Carex aurea Lowell Ahart 1981-8-15 3046 Butte On the south side of the dirt road, about 1 mile east on Coon Hollow Road, south-east of Snag Lake, about 10 miles north of Inskip. 1676 Comment
  CAS-BOT-BC19202  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butt City. Comment
  UC1586586  Carex bolanderi Vernon H. Oswald and Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway, on the edge of Palermo Canal); Lake Oroville Recreation Area, Dan Beebe Trail 170 Comment
  CHSC44104  Carex cusickii L. P. Janeway 1987-6-26 2325 Butte Open mdw just NW of Logue Mdws along road to Lynch Mdws. 1325 Comment
  RSA0056155  Carex cyrtostachya L. P. Janeway, Lowell A. Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CAS-BOT-BC34956  Carex densa L. P. Janeway 1988-4-10 2616 Butte Below Centerville Road (Humbug Road) 1.0 mile NE of Honey Run Road. 115 Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC50378  Carex feta Vernon Oswald; Lowell Ahart 1990-5-26 4255 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. 32 Comment
  CAS-BOT-BC21238  Carex fracta R. Tallent 1987-8-18 953 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville. 1720 Comment
  JEPS102953  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  CHSC84751  Carex gracilior L. P. Janeway; John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  UCD140426  Carex heteroneura L. P. Janeway; R. A. Schlising 1988-7-16 3015 Butte above Willow Creek, 1 mile west of Humbug Road. 1798 Comment
  RSA0116106  Carex hirtissima Lowell A. Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET7561550 Image available Carex hirtissima L. P. Janeway, Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Oroville Dam quad. Northern Sierra Nevada Foothills, near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. 280 Comment
  CAS-BOT-BC28190  Carex hirtissima Lowell Ahart 1982-5-8 3425 Butte 1/10 mi N of the intersection of Lower Forbestown Road and Ponderosa Way, 700 Comment
  CHSC36894  Carex hirtissima L. Ahart 1982-6-1 3529 Butte A little south of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC76350  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  SEINET4286141 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 A Butte Just east of Philbrook Resevoir. Comment
  CHSC52911  Carex integra L. P. Janeway 1987-7-4 2429 Butte Dry open meadow near a seepy area along the road to Jones Meadow, 9.6 mi from Inskip; NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  CHSC100934  Carex laeviculmis R. A. Schlising; R. Preston, R. Banchero 1982-6-23 4302 Butte Seep area in forest. 1219 Comment
  CHSC45081  Carex lemmonii V. Oswald; L. Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CHSC44035  Carex limosa S. C. Morey 1983-7-23 577 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS117593  Carex luzulina var. ablata 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
  UC201800  Carex mariposana H. M. Hall 1914-7-27 9792 Butte Butte Mt. summit Sierra Nevada Mountains 2133 Comment
  CHSC43921  Carex multicaulis L. P. Janeway; C. A. Janeway 1987-4-20 2007 Butte In front of county line sign along hwy 32 less than 1 mi N of Humboldt Road (to Butte Mdws). 1097 Comment
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 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
  CHSC52260  Carex nebrascensis L. P. Janeway; Patty Costello 1987-9-5 2578 Butte NW side of Big Chico Cr below the road to Soda Springs campground near Hwy 32. 1127 Comment
  CHSC52246  Carex nudata L. P. Janeway; Vern Oswald 1989-4-17 3224 Butte Along ditch just southeast of Butte Creek, ca 1/4 mi northeast of Hwy 99. 67 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC102178  Carex praegracilis Lowell Ahart 2009-5-30 15789 Butte On dry soil, forming large dense colonies, meadow, about 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC48542  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3009 Butte Along Colby Mountain Rd, 1/4 mi N of Jonesville. 1554 Comment
  CHSC44964  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side cyn on N-side N Fk Feather River and along hwy 70 ca 5 mi E of Jarbo Gap. Site of old (probably) mining operation. 487 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  SEINET7577170 Image available Carex subfusca Ray Tallent 1987-8-18 956 Butte Lassen National Forest, along Feather River N of Stirling City. 1036 Comment
  HSC103679  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. 'Magalia Serpentine', east side of Coutolenc Road, between that road and the first bend in the road down to the 'Magalia 73 Dam'. 707 Comment
  JEPS108148  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir 762 Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  JEPS8408  Castilleja W. L. Jepson 1891-4-20 21474 Butte South Peak; Marysville Butte Region Comment
  JEPS57366  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1925 Butte about 4 air mi nw Bangor (along Oroville-Bangor road) 182 Comment
  JEPS86449  Castilleja affinis subsp. affinis L. R. Heckard 1973-6-9 3426 Butte ca 5 mi e Oroville (Olive Hwy ca 0.4 mi from junction with Forbestown Rd) 365 Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  SEINET10549332  Castilleja applegatei Heidi H. Schmidt 1993-6-15 Schmidt 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CAS-BOT-BC249586  Castilleja applegatei subsp. pinetorum Helen M. Edwards 1916-6-1 s.n. Butte De Sabla Comment
  POM319349  Castilleja applegatei subsp. pinetorum Patricia Wilder 1971-6-23 5184 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  CAS-BOT-BC255462  Castilleja applegatei var. pinetorum Peter H. Raven 1954-4-17 6619 Butte 10 miles above Oroville on road to Pulga Comment
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC27850  Castilleja attenuata Ethel Pearson 1978-4-18 11 Butte Ca. 12 mi n of Chico on State Hwy. 99 at Broyles Rd. 67 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  CHSC90166  Castilleja attenuata John Copeland 1980-3-7 15 Butte About 1.5 mi north on Meridian Road from Hwy 99, 1.0 mi east of dirt road, 1 ft north and south side of road. Comment
  CHSC90167  Castilleja attenuata J. Lund 1980-4-19 Butte On a trail leading to the falls above Richardson Springs, northeast of Chico. On hillside. 121 Comment
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  CHSC1825  Castilleja lacera L. Oliver; S. Sloan 1935-5-4 Butte Butte Creek Canyon. Comment
  CHSC91456  Castilleja lacera Lowell 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. 759 Comment
  JEPS107548  Castilleja lacera Lowell 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 759 Comment
  JEPS124106  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. Comment
  UC492734  Castilleja miniata H. F. Copeland 1920-7-25 Butte Jonesville 1500 Comment
  JEPS123875  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  CHSC107595  Castilleja tenuis Lowell Ahart 2011-7-9 17575 Butte Along a small wash, southwest edge 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
  UC886575  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  CHSC60665  Caulanthus lasiophyllus Vernon H. Oswald; James Snowden 1993-4-7 5251 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CAS-BOT-BC48809  Ceanothus cuneatus Lowell Ahart 1980-3-26 2061 Butte Near Hurleton 600 Comment
  SEINET10493626  Ceanothus cuneatus Lowell Ahart 1985-3-4 Ahart 4845 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  CAS-BOT-BC50777  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CAS-BOT-BC50817  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte West Bracnh of the North Fork of the Feather River near Stirling 914 Comment
  CHSC45727  Ceanothus integerrimus Cathy Young 1988-4-24 14 Butte 5.5 mi ne of Chico and 100 yds se of Highway 32. 256 Comment
  RSA25632  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  UCR270589  Ceanothus integerrimus John F. Emmel 2001-7-24 1736 Butte 2.3 road miles southwest of Jonesville on road to Humbug Summit, near Cherry Hill Campground 1768 Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  CAS-BOT-BC50713  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1980-9-10 2645 Butte Sierra Nevada - 7 miles east of Milsap Bar 1200 Comment
  CHSC1509  Ceanothus integerrimus var. macrothyrsus L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  JEPS123821  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CAS-BOT-BC51149  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles North-East of Forbestown 868 Comment
  CAS-BOT-BC51729  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte Near Stirling 1074 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
  SEINET10493644  Ceanothus lemmonii Mary Susan Taylor 1980-5-8 Taylor 2593 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  RSA107845  Ceanothus prostratus L. S. Rose 1955-6-14 55098 Butte De Sabia. 732 Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC52419  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC6002  Cedrus atlantica M. MacArthur 1968-6-19 246 Butte Front of Administration bld., Chico State College. 60 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC100871  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek 455 m west of Day Camp. 91 Comment
  CHSC103998  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 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. 55 Comment
  CHSC78120  Centaurea melitensis Lowell Ahart 2000-5-31 8414 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
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC6085  Centaurea solstitialis B. Wilson 1968-5-17 203 Butte E of Broadway and First Street, Chico. 59 Comment
  UCD130088  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte Chico. Comment
  SEINET10873869  Centaurium floribundum Mary Susan Taylor 1980-7-6 Taylor 3055 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  POM76323  Centaurium venustum C. C. Bruce 1897-06 2002 Butte Plains Comment
  SEINET10454836  Centaurium venustum subsp. abramsii Mary Susan Taylor 1975-6-25 Taylor 807 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS108823  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  SEINET4855320  Cerasus obliqua H. E. Brown 1896-10-2 117 Butte Near Oroville. 53 Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  UCD137763  Ceratophyllum demersum Herbert L. Mason; Verne Grant 1946-8-8 12994 Butte Butte Sink. Sanford Slough on Tule Gun Club. Comment
  CHSC90504  Cercis occidentalis Suzanne Peters 1988-3-22 22 Butte S side of Butte Creek, vic. Covered Bridge, ca. 7 mi ese of Chico. 121 Comment
  SD234126  Cercis occidentalis Virginia Pinkus Ryder 1965-4-3 350 Butte Paradise 456 Comment
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CDA13841  Chamaesyce maculata G. F. Hrusa, T. D. Wilfred 1996-9-5 13569 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC113527  Chamaesyce maculata Lowell Ahart 2014-9-23 19864 Butte South edge of the road, near the iron pole gate, parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  RSA755368  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  CHSC113526  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC83024  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 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
  CHSC43697  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-18 1907 Butte Butte Creek ca. 0.2 mi w of Humboldt Rd. at the road island at Cherry Hill. On the edge of a meadow. 1414 Comment
  CAS-BOT-BC69476  Cheilanthes cooperae Wayne D. Dakan 1974-4-15 s.n. Butte Near bridge at West Branch of Feather River on Hwy. 70. Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  SEINET10529916  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2709 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC38308  Chenopodium album Vernon Oswald 1983-6-18 709 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC47671  Chenopodium album Lowell Ahart 1989-9-1 6385 Butte By 15 hp. pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 mile south of Oroville. 36 Comment
  RSA725000  Chenopodium ambrosioides var. ambrosioides L. Ahart 2006-9-11 13281 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
  UC455449  Chimaphila umbellata Miss Kate Conger 1907-1 Butte Bush Creek Comment
  CAS-BOT-BC184906  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CDA1901  Chloris virgata L. Ahart 2004-6-29 11147 Butte On the E side of Lone Tree Road, about 1/2 mi. N of Palermo Road, about 1 1/2 mi. (air) NW of Palermo, about 5 mi. (air) south of Oroville. Comment
  CHSC39020  Chlorogalum pomeridianum var. pomeridianum J. D. Jokerst 1983-6-21 1818 Butte Top of North Table Mountain at north edge of Coal Cr Canyon. 304 Comment
  CHSC84240  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the north slope of Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 296 Comment
  HSC97883  Chondrilla juncea L. Ahart 2003-7-10 10372 Butte N slope of Ponderosa Dam, about 2 mi. (air) NW of Forbestown 297 Comment
  JEPS104397  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the n slope of Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 296 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  RSA0036433  Chorizanthe membranacea Lowell A. Ahart 2012-5-12 18038 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7.5 miles (air) northeast of Chico. 414 Comment
  CAS-BOT-BC36367  Chrysolepis sempervirens Saichi Kawahara 1968-5-5 397 Butte Bull and Skyway Road 1554 Comment
  UC177565  Cirsium andersonii H. M. Hall 1914-6-30 9817 Butte northern Butte County Sierra Nevada Mountains 1615 Comment
  SEINET179234  Cirsium breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  CAS-BOT-BC285578  Cirsium occidentale var. candidissimum E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC285525  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CHSC39644  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road, ca 3/4 mi w of Oroville Quincy Highway, ca 15 mi ne Oroville, Sec. 6. 425 Comment
  SEINET7073612  Clarkia affinis A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC12119  Clarkia arcuata M. F. Smith 1972-3-1 8 Butte On Cherokee Orille Road. Six (6) miles north of Oroville on Table Mountain. 304 Comment
  CHSC28707  Clarkia arcuata R. A. Schlising 1979-5-8 3389 Butte E of Chico along the Skyway (Hwy to Paradise). Comment
  CAS-BOT-BC172395  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near teh Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC27035  Clarkia biloba subsp. brandegeeae Robert A. Schlising 1978-6-25 3293 Butte E of Oroville, 3.4 mi below L. Wyandotte near L. Oroville. Comment
  CHSC46129  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC84687  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7803 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.5 km southwest of mouth of Bean Creek. 283 Comment
  CHSC39038  Clarkia gracilis subsp. albicaulis Lowell Ahart 1983-6-26 4159 Butte About 17 miles ne of Oroville, along Bean Creek Road, about 5 miles s of Little Bald Rock. 600 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
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC64116  Clarkia mosquinii L. P. Janeway 1993-7-31 4483 Butte Along the road to Cascade, 0.6 mi north of the Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank 1066 Comment
  CAS-BOT-BC172381  Clarkia purpurea subsp. viminea Lowell Ahart 1984-5-28 4650 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
  CHSC88090  Clarkia rhomboidea R. D. Fischer 2004-4-17 175 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on cut bank. 365 Comment
  RSA108409  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 759 Butte Highway 24, 1.4 mile south of Arch Rock, Feather River. Comment
  CAS-BOT-BC439109  Claytonia exigua subsp. exigua A. A. Heller 1919-3-29 13094 Butte Feather River near Yankee Hill Comment
  RSA65644  Claytonia palustris F. W. Peirson 1926-6-21 6774 Butte Butte Meadow, Humboldt Road Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  CHSC109117  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2012-2-22 17743 Butte On a large rock, about 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CAS-BOT-BC440033  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte New high school grounds at Chico Comment
  SEINET10572739  Claytonia rubra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4743 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC91351  Clematis lasiantha Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 48 Butte About 5 miles south of Paradise on Pentz Road, at intersection with Kuncle Reservoir Road. Comment
  CHSC20059  Clematis lasiantha M. S. Taylor 1975-4-25 491 Butte Ca. 1/2 mi e of Cohasset Hwy, along dirt road, ca. 10 mi ne of Chico. Comment
  CHSC2478  Clematis lasiantha W. Fitzwater 1958-4-12 Butte Foothills east of Chico. Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 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
  CHSC42872  Collinsia parviflora Lowell Ahart 1987-5-12 5639 Butte South of Lumpkin Rodge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC48981  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-5-14 2398 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humbolt and Humbug Roads. 1780 Comment
  POM193432  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville. 1650 Comment
  UC1586405  Collinsia sparsiflora var. collina Lowell Ahart 1991-8-8 6643 Butte On a steep slopoe on the W side of north Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles N and 2 annd 3/4 miles E of Honcut, about 12 miles SE of Oroville. Foothill Woodland. 45 Comment
  CDA31999  Collinsia tinctoria L. Ahart 2008-5-3 15785 Butte Around large rocks, 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 0 Comment
  CHSC71192  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte About 1/4 miles north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC38589  Collomia heterophylla Vernon Oswald 1983-4-17 328 Butte Upper Bidwell Park, Chico, beside the trail between Brown's Hole parking lot and the creek. 207 Comment
  SEINET10496939  Collomia heterophylla Mary Susan Taylor 1980-4-27 Taylor 2550 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET12326799  Collomia heterophylla L. Ahart, Ahart, P. 1983-1 4070 Butte along Bloomer Hill Rd, ca 0.5 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 400 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  CAS-BOT-BC286058  Conyza canadensis Lowell Ahart 1986-11-9 5438 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
  JEPS99033  Conyza canadensis Lowell Ahart 1998-11-11 8063 Butte About 3/8 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS46150  Corallorhiza maculata Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CHSC47491  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1977-7-8 1447 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  RSA4169  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 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
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  UC455443  Cornus nuttallii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS106093  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  SEINET10478568  Corylus cornuta var. californica Mary Susan Taylor 1978-7-21 Taylor 1797 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CAS-BOT-BC291331  Cotula coronopifolia Lowell Ahart 1980-4-9 2220 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 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
  CHSC62352  Crassula connata B. Castro 1990-3-31 416 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House. 297 Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  UC1212530  Crepis occidentalis subsp. conjuncta H. F. Copeland 1932-7-24 Butte near Butte Creek meadow; Lassen National Forest, vicinity of Jonesville Comment
  POM29958  Crocidium multicaule C. C. Bruce 1897-03 2072 Butte [Unspecified] Comment
  JEPS122263  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UCD59960  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC46749  Cryptantha affinis Lowell Ahart 1984-7-19 4724 Butte Along logging roads, north of the dirt road that is about 1-1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  JEPS87166  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  CHSC71165  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 Comment
  SEINET10497601  Cryptantha hendersonii Mary Susan Taylor 1982-5-2 Taylor 4397 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
  SEINET12329561  Cryptantha hendersonii Unknown 1984-1 4677 Butte ca 1 mi E of Ponderosa Dam, ca 2 mi N of Forbestown, Yellow Pine Forest 475 Comment
  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
  JEPS98598  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 Butte 3 mi SE of Paradise (a serpentine ridge, about 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  UC857292  Cryptantha torreyana A. A. Heller 1915-5-28 11912 Butte near Cohasset (Sierra foothills); Sierra Comment
  JEPS94944  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte about 1/4 mi e Table Mountain (near some small streamlets of creek, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  NY16720  Cupressus macnabiana C. B. Wolf 1934-10-5 6160 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
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  CDA39928  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CDA7735  Cuscuta japonica M. Brown 2007-11-27 PDR# 1328505 Butte Oroville, 3355 Fallbrook. 0 Comment
  JEPS120791  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile SE of the Honcut Cemetery, about 3 1/4 air miles NE of Honcut. Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  CHSC33257  Cycloloma atriplicifolium R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. Comment
  CHSC78827  Cycloloma atriplicifolium Lowell Ahart 2000-10-15 8708 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
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  CHSC152  Cynoglossum grande M. Roberson 1956-3-9 Butte S.W. of Paradise, along Skyway. 426 Comment
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 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
  JEPS64096  Cyperus eragrostis W. L. Jepson 1939-8-17 19462 Butte Feather R. near Oroville; Feather R. 45 Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  JEPS120855  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  SEINET10971818  Cyperus erythrorhizos Lowell Ahart 1984-8-19 Ahart 4789 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC61068  Cyperus esculentus Vernon H. Oswald 1993-8-9 5780 Butte Arroyo Chico. Hwy. 99 offramp at E. 1st Ave. (NW corner), Chico. 64 Comment
  POM219532  Cyperus esculentus H. F. Copeland 1923-8-13 550 Butte Nelson. Comment
  UCR146290  Cyperus flavicomus Ellen Dean, Et al. 2001-8-20 850 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162, south side of Hamilton road, west of jct. with Riceton Hwqy, W side of RR tracks; along dirt road that is the extension of Hamilton rd. Comment
  CHSC76405  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-10-3 8287 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS119815  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  JEPS98392  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte S end of the large dredge pond, on the W side of the Feather River between Palm Avenue and Vance Avenue Oroville Wildlife Area 28 Comment
  CHSC102724  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET9084437  Cyperus niger L. Ahart 2000-6-17 8489 Butte North Table Mountain, W side of Cherokee Road, W of the cow chute and the large parking area, W of the lone oak tree, ca 7 air miles N of Oroville.. 404 Comment
  CHSC31955  Cyperus squarrosus J. D. Jokerst; R. A. Schlising 1980-7-2 925 Butte Garland Rd, 2.3 mi SE of Hwy. 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC51018  Cyperus squarrosus Lowell Ahart 1990-7-15 6563 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  CHSC68416  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-12 1920 Butte North side of North Fork Feather River at Pulga. 426 Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  SD9857  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek 1550 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  UCD60296  Dactylis glomerata L. Y. Leonard 1919-6-16 X 3096 Butte Chico. Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  UCD137972  Damasonium californicum L. Ahart 1974-5-12 451 Butte along Central House Road, near Honcut. 30 Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  JEPS95166  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  JEPS95167  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CHSC6660  Danthonia unispicata Marilyn Lee 1968-4-19 115 Butte West side of Cherokee Road, 2 miles south of Cherokee and 100 yards south-east of graveyard. Table Mt. Comment
  CHSC6759  Danthonia unispicata V. Hagaman 1968-4-19 475 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  CHSC1640  Darmera peltata R. Morford 1931-4-30 Butte Rock Creek, Cohasset. Comment
  CHSC84373  Darmera peltata Lowell Ahart 2003-8-26 10547 Butte On the bottom of the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 6 miles (air) northeast of Feather Falls. 975 Comment
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  CHSC101137  Daucus pusillus Lowell Ahart 2009-5-15 15676 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
  CHSC29798  Daucus pusillus M. S. Taylor; J. D. Jokerst 1980-5-14 2882 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC35967  Daucus pusillus M. S. Taylor 1982-5-21 4491 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over the Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  SEINET10536231  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3568 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC56765  Delphinium gracilentum Kirsten Tarp 1982-6-6 184 Butte Near Flea Valley. Comment
  CAS-BOT-BC8575  Delphinium hansenii Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC44424  Delphinium hansenii Lowell Ahart 1988-6-11 6037 Butte On a ridge on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC56768  Delphinium nuttallianum Kirsten Tarp 1982-8-1 240 Butte SE of Philbrook Reservoir on Table Mt. Comment
  CHSC97408  Delphinium nuttallianum Robert Fischer 2006-6-17 1027 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road between Lomo and Butte Meadows. 1402 Comment
  POM193379  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  CHSC56777  Delphinium patens subsp. patens J. D. Jokerst 1981-4-2 1167 Butte Table Mountain; south of Cherokee Road where it intersects the east edge of the section, on east side of the mountain. 396 Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  CHSC100790  Delphinium variegatum J. D. Jokerst; R. A. Schlising 1981-4-16 1300 Butte 0.9 mi E of Bangor Road on Swedes Flat Road. Comment
  CHSC100792  Delphinium variegatum Michael P. Crivello 1979-4-4 Butte Along Highway 32, 3.4 miles east of intersection with Highway 99 in Chico. 137 Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  RSA718042  Delphinium variegatum R. D. Fischer 2004-4-4 802 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side Hwy 32 along Guardian Trail between the Pine and Bloodypin Trails 335 Comment
  CAS-BOT-BC16978  Delphinium variegatum subsp. variegatum H. E. Brown 1897-4-15 160 Butte Near Clear Creek Comment
  CHSC4081  Delphinium variegatum subsp. variegatum J. E. Bowlin 1967-4-14 19 Butte Near the railroad tracks, ca 30 ft. from the Skyway and ca. 1.8 mi e of the corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC65826  Delphinium variegatum subsp. variegatum Mark S. Cederborg 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 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
  CHSC101116  Dendromecon rigida Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  SEINET10970988  Dendromecon rigida Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4188 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10448605  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-31 Taylor 3452 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET176079 Image available Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville border of the 'Lily Pond' a permanent pool warm in summer 1750 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CHSC56628  Deschampsia danthonioides J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  JEPS117703  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  JEPS98683  Deschampsia elongata Lowell Ahart 2000-6-29 8549 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
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  CDA24035  Dianthus armeria subsp. armeria L. Ahart 2004-7-11 11223 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  JEPS105645  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
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UC120092  Dicentra formosa D. Cleveland 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CAS-BOT-BC402391  Dicentra formosa subsp. formosa Marion Ownbey 1964-4-21 s.n. Butte Collected by the banks of Heinz Creek, S side of the canyon of N. fork of the Feather River, ca. 1/2 mi. E of Poe Power Dam Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  CHSC40625  Dichelostemma capitatum subsp. capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC4252  Dichelostemma capitatum subsp. capitatum J. W. Cherry 1967-3-26 Butte Ca. 50 yds. S. of Bidwell Park road, 0.3 mi. e. of Salmon Hole. 170 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  CHSC2092  Dichelostemma multiflorum N. Maxwell 1929-3-28 Butte Richardson Springs. 274 Comment
  CHSC75416  Dichelostemma multiflorum Jennifer Slater 1997-4-20 28 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC501078  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 100 yards south of the dirt rood, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  CHSC4128  Dichelostemma volubile R. Carter 1966-4-26 371 Butte Found ca. 7 mi. E of Oroville on E side Feathervale Ave., 300' from Wyandott-LaPort Rd. 243 Comment
  CDA39972  Dichondra micrantha William Hansell 1963-6-7 s.n. Butte 1 mile east of Quincy Road and 1 mile south of the Middle Fork of the Feather River on the west side of Bidwell Mountain; Hansell property, Route 4, box 4660. 0 Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 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
  CHSC45211  Digitaria sanguinalis Lowell Ahart 1976-7-4 1152 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC150253  Diplacus Grace Kermode 1899-6-9 s.n. Butte Sandy Gulch, Chico Comment
  CHSC44812  Diplacus grandiflorus R. Banchero 1980-4-19 122 Butte Along Lumpkin Rd ca 1.1 mi NE of the Enterprise Bridge, ca 0.3 mi from the jct of Lumpkin and Enterprise Rds. 353 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CAS-BOT-BC153219  Diplacus kelloggii A. A. Heller; H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek) Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CAS-BOT-BC153210  Diplacus kelloggii Lowell Ahart 1969-4-8 s.n. Butte Swedes Flat Road, near Bangor 1200 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CAS-BOT-BC153336  Diplacus layneae John Thomas Howell 1962-6-15 37533 Butte Magalia 731 Comment
  CHSC46409  Diplacus layneae Lowell Ahart 1989-5-28 6292 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC12732  Diplacus tricolor B. McIntire 1974-3-20 17 Butte Collected in meadow w of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  POM182759  Disporum hookeri var. hookeri Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC2141  Distichlis spicata H. Silberman; D. Isaac 1949-9-19 Butte Grey Lodge State Game Refuge. Comment
  CAS-BOT-BC136233  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CAS-BOT-BC136236  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  SEINET10449640  Dodecatheon hendersonii Mary Susan Taylor 1975-3-10 Taylor 414 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  UCD118955  Dodecatheon hendersonii M. R. Nichols 1975-4-23 5 Butte 5.6 mi e of Chico on Skyway from Hwy 99. 304 Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10547761  Dopatrium junceum Lowell Ahart 1991-7-21 Ahart 6668 Butte Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  SD120580  Downingia bella Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca. 2.5 miles northnortheast of Honcut between Orovill and Marysville. 29 Comment
  SBBG29765  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  UC725779  Downingia bicornuta var. bicornuta A. A. Heller 1940-5-13 15617 a Butte 3 mi w Chico (on State Highway 32) Comment
  CHSC60970  Downingia ornatissima Lowell Ahart 1993-5-17 6952 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC109119  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  CHSC46482  Draba verna var. verna Lowell Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  SEINET10448016  Drosera rotundifolia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  RSA755756  Dryopteris arguta L. Ahart 2009-5-23 15763 Butte About 30-40 yards west of Guardians, Trail, about 100 yards northeast of Pine Trial, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 2 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  CHSC31794  Dudleya cymosa L. Ahart 1976-4-7 1038 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42190  Dudleya cymosa A. L. Quesada 1986-4-19 2 Butte Small population 3.3 mls from jct of Stilson Cyn on Humboldt Rd n of Chico. 152 Comment
  CDA35633  Dudleya cymosa J. R. Keck Jr. 1981-5-13 PDR# 237678 Butte Oroville. 0 Comment
  SEINET10449678  Dudleya cymosa Mary Susan Taylor 1981-5-15 Taylor 3735 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CHSC77481  Dudleya cymosa subsp. cymosa Anna Pinsky 1997-4-1 9 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek. Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC34788  Dysphania ambrosioides L. Ahart 1981-11-6 3224 Butte Near the parking area a little w of the Graylodge Waterfowl Mgmt HQ, ca. 3/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico Comment
  SEINET10507007  Echinochloa Mary Susan Taylor 1977-10-10 Taylor 1510 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  CHSC108611  Echinochloa colona L. P. Janeway 2011-10-20 10781 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CHSC42921  Echinochloa crus-galli Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  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
  RSA796046  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SBBG126093  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  UCD61090  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  SEINET239848 Image available Echinochloa oryzoides E. Dean, J. Ditomaso; E. Healy 2001-8-20 853 Butte Biggs UC Field Station 30 Comment
  SEINET3097024 Image available Echinodorus berteroi Marc Mittleman 1980-8-1 223 Butte Little Chico Creek, east side adjacent to China Garden Springs 262 Comment
  CHSC42128  Elatine ambigua Lowell Ahart 1978-5-12 1716 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC82218  Elatine ambigua Lowell Ahart 2002-4-22 9522 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS104282  Elatine ambigua Lowell Ahart 2003-6-23 10299 Butte On the bottom of a wash, Peter Ahart Ranch, ca 100 yd e of Palermo Honcut Highway, ca 2 1/4 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS122236  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 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
  CHSC65778  Elatine heterandra Vernon H. Oswald 1996-4-10 7354 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  SEINET10447967  Elatine rubella Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4200 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 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
  SEINET13710245  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8690 Butte Pond on E Side Sacramento River, NE of Parrott Landing, 12 Mi SW Chico Comment
  SD426  Eleocharis acicularis var. acicularis E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC78920  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-10-2 8699 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
  CHSC46597  Eleocharis bella V. Oswald; L. Ahart 1989-7-21 3869 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. In a depression on the w side of Colby Creek. 1487 Comment
  JEPS105633  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 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
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET3441882  Eleocharis engelmannii Unknown 2000-7-4 8445 Butte Forbestown, Forbestown, about 3.5 air miles southwest, south of the intersection of Black Bart Road and Forbestown Road 730 Comment
  SEINET10905703  Eleocharis macrostachya Mary Susan Taylor 1980-5-31 Taylor 2774 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
  CHSC31669  Eleocharis pachycarpa L. Ahart 1974-6-24 503 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET7587011 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 549 Comment
  JEPS98377  Eleocharis radicans Lowell Ahart 2000-10-2 8700 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CHSC84278  Eleocharis rostellata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10224 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
  CHSC38816  Eleusine indica Vernon Oswald 1983-10-3 1051 Butte Upper Bidwell Park, Chico, at the north entrance to the parking lot at Hooker Oak Recreation Area. Roadside. 79 Comment
  CHSC45318  Eleusine indica Vernon Oswald 1988-8-30 3695 Butte California State University, Chico, along Mansion Ave. 59 Comment
  CAS-BOT-BC451515  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS122217  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte On 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
  RSA699696  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  SEINET10501555  Elodea canadensis Mary Susan Taylor 1975-10-4 Taylor 959 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  CHSC113955  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC11974  Elymus elymoides subsp. californicus E. B. Copeland 1929-7-24 340 Butte Jonesville. 1575 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CHSC102171  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC111403  Elymus glaucus subsp. glaucus Lowell Ahart; Lowell Ahart 2012-6-28 18239 A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC38817  Elymus glaucus subsp. glaucus Vernon Oswald 1983-5-15 498 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC97405  Elymus glaucus subsp. jepsonii Robert Fischer 2006-6-27 1024 Butte Paradise. Sierra Nevada foothills, upper Paradise Pines, off Nimshew Road. 853 Comment
  CAS-BOT-BC234104  Elymus multisetus Lowell Ahart 1983-6-26 4114 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, Sierra Nevada 500 Comment
  CHSC61536  Elytrigia intermedia subsp. barbulata Lowell Ahart 1993-6-26 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC45420  Enemion occidentale Lowell Ahart 1973-2-28 156 Butte Along the south side of Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north-east of Bangor. 304 Comment
  UCD105279  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  JEPS88598  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and Sacramento R. (Sacramento R. National Wildlife Refuge, Llano Seco Unit, at s. end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  JEPS95175  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and the Sacramento River (Sacramento River National Wildlife Refuge, Llano Seco Unit, at s end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  JEPS110127  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 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
  CHSC102606  Epilobium ciliatum subsp. ciliatum L. P. Janeway; B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC28775  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-7-12 319 Butte 1.0 mi. W. of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  CHSC46572  Epilobium ciliatum subsp. glandulosum V. Oswald; L. Ahart 1989-7-12 3854 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. Along the edge of the creek. 1901 Comment
  RSA0118758  Epilobium ciliatum subsp. glandulosum Lowell A. Ahart 2014-7-13 19653 Butte East part of a large wet meadow, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM183928  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-23 s.n. Butte Jonesville, meadow near Jonesville Inn 1500 Comment
  RSA767491  Epilobium cleistogamum L. Ahart 2010-6-20 16825 Butte Large vernal pool, about 0.25 miles north of Cox lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 air miles southeast of Oroville. 60 Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  CHSC112109  Epilobium densiflorum Lowell Ahart 2012-6-5 18160 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC38562  Epilobium densiflorum Vernon Oswald 1983-6-29 794 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 200 ft w of Parking Area N (Salmon Hole). 152 Comment
  CHSC58927  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte In a depression, on slopes, about 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC54442  Epilobium glaberrimum Vernon H. Oswald; Lowell Ahart 1991-7-15 4738 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. Just upstream from the bridge. 1051 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC40776  Epilobium minutum Lowell Ahart 1985-5-15 4970 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  UCD106506  Epilobium minutum Lewis S. Rose 1963-6-2 63071 Butte 2 miles S of Pulga. North fork of Feather River. 579 Comment
  SEINET12194592  Epilobium minutum Unknown 1985-1 4970 Butte N of Oroville, W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd. and Rt. 70, N of Yankee Hill 503 Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC70346  Epilobium oregonense R. A. Schlising 1981-7-28 4171 Butte N part of county at Coon Hollow, N of Philbrook Reservoir; near junction dirt road and West Branch of Feather River. Creekside. 1328 Comment
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  CHSC35107  Epilobium pallidum R. A. Schlising; Ikeda, Jokerst, Taylor 1980-5-8 3590 Butte NE of Chico Airport and WSW of Richardson Springs; at vernal pool on Cohasset Ridge. 249 Comment
  UC726202  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise 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
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC102161  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET10872488  Epipactis gigantea Mary Susan Taylor 1975-6-25 Taylor 802 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC56941  Equisetum arvense Alice Eastwood 1912-6-15 s.n. Butte Deer Park, Lake Tahoe Region Comment
  SEINET10530172  Equisetum hyemale subsp. affine Mary Susan Taylor 1975-10-4 Taylor 965 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC20222  Equisetum telmateia subsp. braunii Theresa Salinas 1972-8-3 7 Butte Doones Camp near Stirling City. 1219 Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CHSC113541  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte Near a small drainage, 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. 88 Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 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
  CAS-BOT-BC284081  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 1492 Butte The edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville 35 Comment
  JEPS88562  Eragrostis pectinacea var. pectinacea Vernon H. Oswald and Lowell Ahart 1996-6-10 7733 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the Sacramento River at the n end of the Riparian Sanctuary); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  SEINET10555837  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Scaramento River, ca. 10 mi W of Chico. 37 Comment
  UC1130391  Eremocarpus setiger F. W. Embree 1934-5-3 51 Butte 2 mi ese Pacific Heights; Marysville Quadrangle Comment
  SEINET10873979  Eremocarpus setiger Mary Susan Taylor 1977-6-25 Taylor 1372 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  CHSC42990  Erigeron canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC34042  Erigeron petrophilus var. sierrensis L. Ahart 1981-7-7 2932 Butte On a large hillside s of the rd, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC44904  Erigeron petrophilus var. sierrensis Lowell Ahart 1988-7-28 6138 Butte At the north side of the dam at Lost Creek Reservoir. 1036 Comment
  JEPS105013  Erigeron petrophilus var. sierrensis Dean W. Taylor 1995-8-6 15384 Butte Rocky Ridge, N end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest 975 Comment
  CHSC325  Erigeron philadelphicus B. Richardson 1929-4-29 Butte Bidwell Park. Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  JEPS115839  Eriodictyon californicum Lowell Ahart 2009-4-22 15591 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
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  SD1343  Eriogonum marifolium E. B. Copeland 1930-7-12 Butte Above Jonesville; open fir woods 2000 Comment
  CHSC52111  Eriogonum nudum var. pubiflorum Steven Triano 1988-9-18 255 Butte Dry, rocky roadside along Hwy. 32 ca 7.2 mi e of its jct. with Hwy. 99. 463 Comment
  CHSC23373  Eriogonum roseum Lowell Ahart 1975-9-4 981 Butte Growing along Ponderosa Way, two miles southwest of Feather Falls. Ca 1 1/2 mi NW of the Ponderosa Dam. 396 Comment
  RSA726310  Eriogonum roseum L. Ahart 2007-7-24 14390 Butte About 200 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. 36 Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  JEPS113301  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-8-9 8836 Butte Northern High Sierra Nevada. Plumas National Forest; along the northwest edge of Mooreville Ridge 9.6 air km west-soutwest of La Porte. Comment
  JEPS122289  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 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
  RSA0114874  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; Magalia Serpentine (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  UC849667  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte along Feather River Highway 23 mi from Oroville Comment
  CHSC39089  Eriogonum ursinum var. ursinum R. A. Schlising 1982-7-21 4334 Butte N part of county, S of Philbrook Reservoir on small rock outcrops. 1853 Comment
  JEPS103369  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC308151  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Near Cohasset Comment
  UC171383  Eriophyllum lanatum var. grandiflorum A. A. Heller 1912-5-23 10748 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC664  Erodium botrys P. Delaplane 1965-3-20 25 Butte On open fields on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  CHSC38450  Erodium brachycarpum Vernon Oswald 1983-3-5 116 Butte Upper Bidwell Park, Chico, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC85819  Erodium brachycarpum Richard R. Halse 2002-3-27 6154 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  CHSC37504  Eryngium castrense J. D. Jokerst 1983-1-17 1676 Butte Top of North Table Mt. Ca 1/2 mile north of Cherokee Rd at the east edge of mesa. 381 Comment
  UCD127596  Eryngium castrense B. F. Smith 1969-4-15 93 Butte 2 miles south of Oroville. 74 Comment
  CAS-BOT-BC40749  Erysimum capitatum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC110631  Erythranthe glaucescens Christopher T. Ivey; Jenn Coughlan 2013-5-17 383 Butte Centerville Rd. about 1 km N of Honey Run bridge. Roadside ditch on W side of road. 115 Comment
  CHSC27272  Erythranthe glaucescens P. Moyer 1972-4-16 173 Butte CSUC Campus. S. bank Chico Ck., e of Warner St. Bridge. 60 Comment
  CHSC40884  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  SEINET14214297  Erythranthe glaucescens Harris, Reese 1963-4-16 s.n. Butte Chico. 122 Comment
  CHSC104814  Erythranthe guttata Lowell Ahart 2010-6-9 16775 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC110638  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. W side of road. 115 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET8380924  Erythranthe moniliformis C. E. Wickstrom 1964-8-29 52 Butte Butte Meadows 200 ft. sw of where [the] stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  CHSC79622  Erythronium multiscapideum G. F. Hrusa 1997-5-1 13720 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC4000  Eschscholzia lobbii L. R. Alexander 1967-4-2 4 Butte Found 1 mi. from Chico on Paradise road on left hand side of road. 60 Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e 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
  CHSC100416  Euonymus occidentalis var. occidentalis L. P. Janeway; Heather Koeth 2008-11-19 9611 Butte Northern High Sierra Nevada. Along a small creek in a steep deep draw 150 m southwest of Bush Creek, 1.2 air km west-northwest of the mouth of Bus Creek at French Creek. 707 Comment
  UC1609453  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC57223  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1992-3-24 4890 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.3 mi north of Burma Rd. 76 Comment
  CHSC50815  Eurybia integrifolia Vernon Oswald; Lowell Ahart 1990-7-19 4363 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.2 mi west of the Plumas County line. 1981 Comment
  UCSC000766  Eurybia radulina Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  RSA0060843  Euthamia occidentalis Lowell A. Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC93854  Festuca Lowell Ahart 2006-5-19 12635 Butte Road gutter, 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
  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
  JEPS116648  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Along Four Trees Road 3.4 road km east of Coyote Gap Soapstone Hill (at head of minor drainage into Clear Creek, head of French Creek Basin); Northen High Sierra Nevada 1469 Comment
  CHSC49546  Festuca californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir. At the edge of the road bordering the reservoir. 1005 Comment
  CHSC73886  Festuca californica B. Castro 1997-6-13 736 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. Along dirt road edges. 1082 Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  UCR237317  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18733 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC49547  Festuca occidentalis Vernon Oswald 1987-6-2 2946 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. Along a trail in forest. 883 Comment
  SEINET10553410  Festuca pratensis Lowell Ahart 1988-6-29 Ahart 6104 Butte Meadow Fescue. On dry disturbed soil, along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock, Uncommon. Yellow Pine Forest. 914 Comment
  CHSC60868  Festuca subuliflora Vernon H. Oswald; Lowell Ahart 1993-6-22 5563 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  SEINET10475090  Filago gallica Mary Susan Taylor 1978-5-6 Taylor 1623 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  SEINET223406  Filago gallica B. Ertter, J Strachan 1980-5-5 3265 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  CAS-BOT-BC112357  Fimbristylis autumnalis V. Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the W end of Cana Rd., Comment
  CHSC85408  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC50409  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte Near the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd via the logging road just south of Cold Springs, ca. 0.5 mi (air) southwest of Humbug Summit. 1969 Comment
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  CAS-BOT-BC62950  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  SD10094  Frangula rubra E. B. Copeland 1931-7-28 Butte Jonesville; dry ridge west of North Willow Creek 1650 Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  POM130462  Frasera albicaulis var. nitida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SEINET13943082 Image available Fraxinus dipetala Unknown 11405 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC94613  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 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
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC88649  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 296 Butte Plumas National Forest. On Woodleaf Road. 853 Comment
  CHSC88655  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 266 Butte Plumas National Forest. In fill slope on Galen Ridge. 792 Comment
  CHSC34223  Fritillaria recurva M. S. Taylor 1981-5-21 3784 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  CHSC4194  Galium aparine Ann Dolder 1967-4-24 Butte Ca. 50 yards from road of Bare Hole, Bidwell Park, Chico. 76 Comment
  UCR190819  Galium aparine 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
  SEINET10500615  Galium aparine Mary Susan Taylor 1981-5-14 Taylor 3711 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC3155  Galium asperrimum Dona Kingsford 1966-4-30 Butte 1.3 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  SEINET10500696  Galium bolanderi Mary Susan Taylor 1981-5-21 Taylor 3767 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
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CDA6669  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  CHSC61008  Galium murale Lowell Ahart 1993-5-31 6956 Butte In Nature Garden, Durham Elementary School, Durham. 51 Comment
  UCD121842  Galium nuttallii Susan Wagener 1955-4-23 43 Butte 1/2 mile southwest of Compton on road to Durham. Comment
  CHSC45083  Galium porrigens var. tenue Chris Bradley; C. A. Bradley 1988-4-26 2 Butte Honey Run Rd., ca. 100 m from Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  SEINET10500748  Galium trifidum var. pacificum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4750 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  RSA712784  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. NE side near top of ridge 0.7 miles ESE of Flea Mtn. 0.3 miles ESE of Campbell Meadow. 1159 Comment
  CHSC45675  Gamochaeta argyrinea Vernon Oswald 1986-5-12 2031 Butte Northeast side of Paradise Lake. 780 Comment
  CHSC46929  Gamochaeta stachydifolia Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CAS-BOT-BC303381  Gamochaeta ustulata Lowell Ahart 1980-5-25 2326 Butte Along Swedes Flat Rd, near Bangor 320 Comment
  CHSC6162  Gastridium phleoides E. Parreno 1968-4-15 54 Butte NE of Municipal Golf Course in Upper Bidwell Park on slope of ridge, Chico. Comment
  RSA716153  Gastridium phleoides L. 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
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  CDA31993  Gastridium ventricosum L. Ahart 2008-5-12 14780 Butte 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. Comment
  JEPS113793  Gastridium ventricosum Lowell Ahart 2007-6-3 13978 Butte On the east side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS118048  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  UCD103714  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Comment
  SEINET10454859  Gentiana simplex Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4199 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC31734  Geranium dissectum L. Ahart 1975-4-6 742 Butte On the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC77710  Geranium dissectum Anna Pinsky 1997-4-24 19 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek. Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC101272  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS107362  Geranium molle Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  SEINET10495195  Geranium molle Lowell Ahart 1990-4-8 Ahart 6435 Butte East side of Pacific Heights Road, ca. 3.5 miles southwest of Oroville. T19N R3E c/S35. Foothill Woodland. 34 Comment
  SEINET10496738  Gilia capillaris Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  UCD117708  Gilia capitata subsp. mediomontana L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 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
  SEINET11268216  Gilia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam.; 0 1158 Comment
  CHSC45947  Gilia tricolor Lowell Ahart 1976-4-14 1063 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  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
  CAS-BOT-BC266483  Githopsis diffusa A. A. Heller; H. E. Brown 1902-5-8 5491 Butte Berry Canyon [near Clear Creek] Comment
  CDA13895  Githopsis diffusa subsp. robusta G. F. Hrusa, T. D. Wilfred 1997-5-8 13752 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  CHSC20523  Githopsis specularioides M. S. Taylor 1975-4-29 536 Butte Scattered on s side of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60605  Githopsis specularioides L. P. Janeway 1991-4-30 3919 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of Middle Fork Feather River. 426 Comment
  CHSC67358  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2221 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CAS-BOT-BC280564  Glyceria elata Lowell Ahart 1981-9-15 3174 Butte Along French Creek 1300 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CAS-BOT-BC302469  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  UC1609043  Gnaphalium palustre Lowell Ahart 1993-7-23 7103 Butte about 100 yds w bridge across river (about 6 air mi ne of Feather Falls, sand bar on w side of river); Fall River 1036 Comment
  SEINET10547781  Gratiola ebracteata Mary Susan Taylor 1980-5-31 Taylor 2763 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
  CHSC65447  Grindelia camporum var. camporum Vernon Oswald 1990-10-15 4468 Butte Arroyo Chico. East Ave just west of the Esplanade, Chico. Roadside. 54 Comment
  RSA770729  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg ) of Gridley 34 Comment
  SEINET7728169  Gymnogramma triangularis Unknown Butte Chico Comment
  UC480668  Hackelia californica H. F. Copeland 1929-6-11 1235 Butte Jonesville 1524 Comment
  CHSC25272  Hastingsia alba M. S. Taylor 1977-6-26 1391 Butte On ne side of Big Chico Creek directly under Ponderosa Way bridge, 5 mi e of Cohasset. 457 Comment
  CDA42935  Hedera helix L. Ahart 2012-10-2 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC108794  Hedera helix Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC45678  Hedypnois cretica Vernon Oswald 1986-4-10 1066 Butte Dunstone Dr. 0.1 mi n of LaPorte Rd. Roadside. Near Wilson Creek. 41 Comment
  SEINET3450915  Hedypnois cretica Unknown 2003-5-15 10179 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC76121  Helianthus bolanderi G. F. Hrusa 1997-8-5 14066 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC116003  Heliotropium europaeum Lowell Ahart 2015-10-9 20542 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
  CHSC40768  Heliotropium europaeum Lowell Ahart 1985-6-9 5042 Butte In a vacant lot on the west side of Cherry Street, between 7th and 8th Street, Chico. 60 Comment
  CDA5608  Heliotropium europaeum L. Ahart, Vernon Oswald 1999-8-13 8163 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC35660  Helminthotheca echioides R. E. Preston 1982-4-22 248 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  UC405404  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  SEINET10938048  Hemizonia parryi subsp. rudis Lowell Ahart 1983-9-19 Ahart 4456 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  JEPS123882  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. Comment
  CHSC31609  Hesperevax acaulis var. robustior L. Ahart 1979-5-8 1863 Butte Ca. 1/4 mi n of the Peter Ahart Ranch near the w bank of North Honcut Creek. 3 mi ne of Honcut. 70 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  SEINET260315  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Honcut Flume on the Joie Osgood Ranch ca 2 mi N and 2.5 mi E of Honcut 76 Comment
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  UC1586511  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1991-8-28 4851 Butte sw side of Hwy 162 ca 3.5 mi nnw Biggs; Rice Experiment Station 30 Comment
  CHSC115191  Heterocodon rariflorum Lowell Ahart 2015-4-27 20081 Butte On the bottom of the stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along the Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  CHSC62101  Heterocodon rariflorum B. Castro 1987-5-21 122 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 463 Comment
  JEPS98368  Heterocodon rariflorum Lowell Ahart 2000-6-27 8527 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  SEINET10460748  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2718 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  SEINET10972530  Heterocodon rariflorum James D. Jokerst 1980-7-18 Jokerst 0996 Butte Top of North Table Mountain, about 100 mile northwest of the fct.(?) of Cherokee Road and the east edge of the mountain Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  CHSC45806  Heteromeles arbutifolia L. P. Janeway 1988-6-19 2816 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/firebreak along powerline (3-wire, wooden pole). 274 Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 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
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CDA7878  Heterotheca oregona var. rudis L. Ahart 2002-9-27 9940 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
  CHSC95125  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 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
  CHSC86850  Hieracium scouleri var. scouleri L. P. Janeway; John Hunt 2003-7-11 7895 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 835 m north-northeast of mouth of French Creek. Along edge and cutbank of roadbed. 305 Comment
  CHSC38040  Hirschfeldia incana R. E. Preston 1982-12-4 370 Butte At roadside; n side of Ord Ferry Rd at jct with Seven Mile Lane, ca. 7.8 mi ssw of Chico. 36 Comment
  CHSC66434  Hirschfeldia incana Vernon H. Oswald; Lowell Ahart 1996-6-10 7735 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  RSA718739  Holcus lanatus L. Ahart 2006-7-25 13056 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 Comment
  CHSC33703  Hordeum depressum L. Ahart 1981-4-6 2744 Butte A little se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CAS-BOT-BC285088  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-5-17 2311 Butte 1/2 mile south-east of Hurleton 600 Comment
  JEPS115819  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD85770  Hordeum marinum subsp. gussoneanum L. Ahart 1982-4-29 3397 Butte Graylodge Wildlife Refuge. Ca. 3/4 miles W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  SEINET11689119  Hordeum marinum subsp. gussoneanum L. Ahart, Taylor, M. S.; Jokerst, J. D. 1982-1 1537 Butte Grey Lodge Waterfowl Management Area, N side of Rutheford Rd, ca 100 m W of Pennington Rd Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC44164  Horkelia fusca subsp. tenella V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  SEINET3156791  Horkelia tilingii L. S. Rose 1939-6-6 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  CHSC43123  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CDA15322  Hydrocotyle umbellata D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC400826  Hypericum anagalloides Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise. Along the edge of Kunkle Creek 500 Comment
  CHSC31958  Hypericum perforatum J. D. Jokerst 1979-7-6 404 A Butte Top of North Table Mt., bottom of dry, vernally moist depression ca. 300 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS115302  Hypochaeris glabra Lowell Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  RSA136683  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22528 Butte 3 mi. SE from turnoff, Hwy 32 to De Sabla. 671 Comment
  SEINET10469747  Iris hartwegii Mary Susan Taylor 1980-5-27 Taylor 2646 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
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC90010  Iris macrosiphon Ross Rowland 2001-3-28 13 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  UCSB63624  Iris macrosiphon Chambers, Beth 1986-4-18 Butte N on Cohasset Rd; 13.8 mi from Eaton Rd; Chico 853 Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CAS-BOT-BC69903  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 mi. n. and 1/4 mi. e. of Honcut. 50 Comment
  SEINET3863802 Image available Isoetes howellii Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, dry ditches in oat field near ponds, Valley Grassland.; 0 30 Comment
  CAS-BOT-BC61880  Isoetes nuttallii John Thomas Howell 1976-4-1 51530 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC83900  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of 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. 299 Comment
  SEINET10932893  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2449 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC83671  Isolepis setacea John Dittes 2002-7-9 2 -13 Butte Northern High Sierra Nevada; Plumas National Forest, between Hartman Bar Ridge and Mountain Spring House Ridge, on slope above confluence of South Branch of the Middle Fork Feather River and Pinchard Creek, ca. 0.2 air miles south-southeast of Whisky Hill. 1280 Comment
  CAS-BOT-BC112643  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte 6 miles NE of the Ponderosa Dam. 550 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS118484  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge 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
  UCR262435  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15575 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC42379  Juncus articulatus Lowell Ahart 1987-5-27 5696 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC49604  Juncus articulatus Vernon Oswald 1987-6-8 2959 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  CHSC6672  Juncus balticus Marilyn Lee 1968-4-19 102 Butte Along W. side of Cherokee Rd., ca. 2 miles S. of Cherokee and 100 yards S.E. of cemetary. 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
  JEPS107943  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS117241  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  CHSC66169  Juncus bufonius var. congestus Vernon H. Oswald; Lowell Ahart 1996-5-27 7658 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River . 32 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC59024  Juncus covillei var. covillei Lowell Ahart 1992-7-27 6863 Butte Along Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  UC1594673  Juncus covillei var. obtusatus Lowell Ahart 1992-7-27 6863 Butte about 2 mi nw of Four Trees (about 2 mi ne of Coyote Gap, about 2 mi w of the Oroville-Quincy Highway, along Wildcat Creek); Wildcat Creek 1219 Comment
  CDA2695  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte Along Black Bart Road, Forbestown. 0 Comment
  CHSC78400  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 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
  CHSC96957  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  SEINET10472479  Juncus effusus var. pacificus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4099 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CHSC94611  Juncus ensifolius Lowell Ahart 2006-9-13 13317 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 the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC42896  Juncus hemiendytus Lowell Ahart 1987-7-3 5778 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS98332  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  JEPS118340  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  SBBG128428  Juncus laccatus L. Ahart 2011-8-19 17641 Butte ca. 0.5 mi N of the Lost Crk Reservoir Dam, ca. 4.5 mi N of Clipper Mills 1266 Comment
  CHSC82287  Juncus leiospermus var. ahartii Lowell Ahart 2002-4-24 9536 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
  CHSC71105  Juncus leiospermus var. leiospermus Lowell Ahart 1998-5-30 7960 Butte West side of a vernal pool, southwest of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CHSC93498  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine 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. 354 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
  JEPS110148  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  JEPS122155  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC113943  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte Near a small 'pond,' in the southwest part of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS114773  Juncus tenuis Lowell Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west 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
  CHSC107600  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  CDA37364  Juncus usitatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC96956  Juncus usitatus Lowell Ahart 2007-7-11 14292 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
  UC1133653  Juncus xiphioides P. L. Johannsen 1936-7-17 949 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CAS-BOT-BC80922  Juniperus californica Don Heinz 1967-2-12 s.n. Butte Butte Co. dump, Neal Rd., ca. 7 mi. SE of Chico 106 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  NY790276  Keckiella corymbosa J. V. Monachino 1952-7-23 s.n. Butte Oroville, at outskirts of the city on the Feather River. Comment
  UCD80781  Keckiella corymbosa CNPS SN Foothill Team 2005-7-13 Survey Butte North Table Mountain. Comment
  CAS-BOT-BC237821  Keckiella lemmonii Lowell Ahart 1983-7-24 4209 Butte On the road cutbanks at the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC69054  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 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
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC392182  Kelloggia galioides E. B. Copeland 1920-7-16 Butte Jonesville 1550 Comment
  CHSC100500  Kickxia elatine Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15410 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  JEPS103538  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS95733  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  SEINET10782600  Kickxia elatine Renate K. Stern 1972-9-19 Stern 3779 Butte Dry, open area, vic. E bank of the Sacramento River, Llano Seco Rancho, ca. 10 mi SW of Chico. Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  CHSC38365  Lactuca saligna Vernon Oswald 1983-6-29 798 Butte Upper Bidwell Park, Chico, at the edge of Parking Area L at Diversion Dam. 121 Comment
  SEINET10839260  Lactuca saligna Lowell Ahart 1983-9-19 Ahart 4459 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  CHSC32137  Lagophylla glandulosa L. Ahart 1972-10-4 143 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38368  Lagophylla glandulosa Vernon Oswald 1983-7-15 870 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1600 ft e of the parking lot at Salmon Hole. 182 Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  CHSC45213  Lamarckia aurea Lowell Ahart; Jim Jokerst 1980-3-23 2050 Butte At the north end of the West Branch Bridge (Highway 70) and on the north side of the road, about 14 miles north of Oroville. 304 Comment
  CHSC45315  Landoltia punctata Lowell Ahart 1988-10-16 6187 Butte Dredge pond located ca. 300 ft ne of intersection of Pacific Heights Rd. and Hwy 70, ca. 1 mi s of Oroville. 45 Comment
  CHSC8158  Lasthenia californica D. McClain 1969-3-20 82 Butte 20 yds. from Upper Bidwell Park Rd., 1/2 mi. from entrance of Upper Bidwell Park, Chico. 60 Comment
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. Comment
  UCD133733  Lasthenia fremontii Sue Wagener 1955-4-24 51 Butte junction of U.S. Highway 99E and the Paradise Durham Road (around 2 miles southeast of Chico). Comment
  SEINET10475229  Lasthenia glabrata Mary Susan Taylor 1975-4-11 Taylor 422 A Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CAS-BOT-BC213348  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC115496  Lathyrus nevadensis var. nevadensis L. P. Janeway 2015-3-16 11639 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC30819  Lathyrus sulphureus M. S. Taylor; J. D. Jokerst 1980-4-18 2536 Butte On bluffs on e side of Humbug Rd., ca. 2 mi ne of Centerville. 457 Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  JEPS117248  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  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
  CHSC368  Layia fremontii P. Delaplane 1965-3-9 3 Butte Ca. 1/4 mi. S.W. of Chico Municipal Airport on Cohasset Rd. 50 yds. from E. side of road. 30 Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CHSC59579  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte About 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  JEPS87140  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  HSC97027  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the S side of Sheldon Avenue at the intersection with Larkin Rd., ca. 1 mi. S of Gridley Rd., ca. 2 air mi. SE of Gridley. 28 Comment
  JEPS127008  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC88806  Lepidium campestre Lowell Ahart 1974-8-9 s.n. Butte 3 miles east of Coldwater Creek. 1676 Comment
  CHSC46254  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-20 3744 Butte Gray Lodge Wildlife Area, s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC35647  Lepidium nitidum R. E. Preston 1982-4-7 231 Butte In dirt rd at side of Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  UC856524  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte 6 mi e Chico (near Hog Springs) Comment
  SEINET10907332  Lepidium perfoliatum Lowell Ahart 1985-4-1 Ahart 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  JEPS98681  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte NE of Oroville Post Office (S side of the Ehmann Home) 36 Comment
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  POM93997  Lepidium strictum C. C. Bruce 1897-06 1949 Butte Chico Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  JEPS88261  Leptochloa fascicularis Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 .1 Butte Sanctuary II Sacramento River National Wildlife Refuge, Llano Seco Unit (seasonal marsh on s side of Tract 1.1, US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River) 33 Comment
  CHSC31882  Leptosiphon acicularis L. Ahart 1974-4-11 361 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  CHSC1275  Leptosiphon bicolor J. Gulick 1929-4-18 Butte Rifle range near Chico Creek. 106 Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 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
  CHSC83714  Leptosiphon ciliatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 460 Butte In vernal pools below the high water mark. Ca 1.0 mi NE of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 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
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  CHSC38376  Lessingia nemaclada Vernon Oswald 1983-10-2 1050 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  JEPS115863  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Ch 398 Comment
  CHSC38377  Lessingia virgata Vernon Oswald 1983-8-26 1030 Butte Upper Bidwell Park, Chico, near the n-e side of Horseshoe Lake. 103 Comment
  CHSC47675  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte Along a small branch of French Creek, on the north side of the gravel road, east of a small pond, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC51868  Leucothoe davisiae L. P. Janeway 1988-7-2 2939 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC36360  Lewisia nevadensis J. D. Jokerst 1982-5-28 1585 Butte In meadow. Ca 1/4 mi. N. of Concow Lake. 609 Comment
  SBBG17055  Lewisia rediviva var. minor M. Vincent 1962-4-17 205 Butte Cherokee Rd at Table Mtn Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CDA13279  Ligusticum grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13127 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  JEPS122074  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC38881  Lilium humboldtii subsp. humboldtii Vernon Oswald 1983-6-9 659 Butte Upper Bidwell Park, Chico, near Brown's Hole. ... Field redacted by CHSC, contact the data manager for more information 195 Comment
  POM109709  Lilium humboldtii subsp. humboldtii C. C. Bruce 1897-06 s.n. Butte [no locality information provided] Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CAS-BOT-BC508459  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  SEINET10971607  Lilium washingtonianum Mary Susan Taylor 1980-8-2 Taylor 3211 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  POM86187  Limnanthes alba R. M. Austin 1883-05 s.n. Butte No locality information provided. Comment
  CHSC38538  Limnanthes alba subsp. alba Vernon Oswald 1983-4-18 337 Butte Upper Bidwell Park, Chico, on the north rim near the head of the west intermittent stream which flows into Sycamore Creek (4000 ft e of the power lines). 286 Comment
  UC971829  Limnanthes alba subsp. alba Annetta Carter 1942-5-2 1669 Butte s Oroville Comment
  UCD71184  Limnanthes alba subsp. alba M. Plotkin 1997-3-21 MSP 12 a Butte Northeast of Chico Municipal Airport, South of dirt road diverging East from Hicks Road where Hicks Road makes a sharp turn West. 91 Comment
  RSA590211  Limnanthes douglasii subsp. douglasii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7236 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  CHSC55716  Limnanthes douglasii subsp. nivea Jennie J. DuBose 1991-4-2 3 Butte Ca. 45 m w of Table Mountain Cherokee Road. 3.75 km n of Oroville on n Table Mountain. 366 Comment
  HSC92522  Limnanthes douglasii subsp. rosea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 43 Butte 3 mi. NE of Chico in Bidwell Park. 290 Comment
  CAS-BOT-BC45926  Limnanthes floccosa subsp. californica Charles T. Mason, Jr. 1949-4-24 1255 Butte 8 miles N.W. of Oroville along the Oroville-Chico road Comment
  CHSC67552  Limnanthes floccosa subsp. californica James D. Jokerst; Greg Sutter 1991-3-26 3224 Butte Rancho Arroyo, NE Chico. Comment
  HSC87203  Limnanthes floccosa subsp. californica J. D. Jokerst 1985-3-30 2188 Butte N edge of county, throughout this quarter section and N into Tehama Co. to edge of Blue Oaks 122 Comment
  JEPS107972  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. Comment
  CHSC36222  Limosella aquatica L. Ahart 1982-4-29 3400 Butte Peter Ahart Ranch, ca. 2.5 mi n of 1/10 mi e of Honcut. 50 Comment
  JEPS115836  Linanthus bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of 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
  UC133974  Linanthus dichotomus E. B. Copeland 1903-4-11 3030 Butte Chico Comment
  RSA754581  Linanthus filipes L. Ahart 2009-4-22 15586 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
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  CHSC11951  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville. Mountain top west of 'the Summit. 2150 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  CHSC51015  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-4 6541 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
  CHSC38910  Lipocarpha aristulata Vernon Oswald 1983-7-8 841 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  CHSC94275  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA14774  Lithocarpus densiflorus var. densiflorus G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3377 Butte 1.1 miles northeast of Mountain House. 1051 Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  SFV856  Lithocarpus densiflorus var. echinoides F. C. Raney 1964-9-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  CHSC3164  Lithophragma Dona Kingsford 1966-3-26 Butte Covered Bridge, 7 miles NE of Chico on damp hill side, Chico area. Comment
  CHSC9278  Lithophragma D. C. Burns 1971-4-2 111 Butte Ca. 30 yds. s side of Cohasset rd. ca. 4.0 mi w of intersection of Cohasset rd. and Vilas rd. 304 Comment
  CHSC1651  Lithophragma bolanderi E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  CHSC28131  Lithophragma bolanderi J. D. Jokerst 1979-4-28 207 Butte N bank of Rock Crk., 150 yds nw of intersection Rck Crk. Rd. and Cohasset Hwy. 121 Comment
  CHSC36523  Lithophragma campanulatum L. Ahart 1982-5-8 3421 Butte Near the edge of the road at Forbestown Reservoir. 700 Comment
  CHSC46271  Lithophragma campanulatum Vernon Oswald 1989-5-8 3761 Butte Feather Falls Trail, between the trailhead at the end of Bryant Ravine Rd and Frey Creek. 731 Comment
  UCD102726  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC87432  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-1 95 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  RSA727542  Lithospermum californicum 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
  CAS-BOT-BC342139  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CHSC82438  Logfia gallica Lowell Ahart 2002-5-7 9609 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  CHSC31418  Lolium multiflorum L. Orme 1980-3-14 1 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  CHSC6730  Lolium multiflorum B. Anthony 1968-3-24 411 Butte Archery course, Bidwell Park, Chico. Comment
  JEPS107335  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  JEPS110446  Lolium multiflorum Lowell Ahart 2005-12-11 12519 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CAS-BOT-BC271207  Lolium temulentum Lowell Ahart 1983-6-21 4068 Butte Along Bloomer Hill Road, ca. 0.5 mi. W of the Oroville Quincy Highway, ca. 15 mi. NE of Oroville Sec. 5 400 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  CHSC108809  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte On the high bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC32594  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1265 Butte Open grassland S of the summit of Campbell Hills. Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  JEPS117226  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico 301 Comment
  RSA32027  Lomatium marginatum A. A. Heller 1941-4-14 16065 Butte Along U.S. Highway 99E, 4 miles south of Biggs 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
  CHSC96573  Lomatium marginatum var. marginatum L. P. Janeway 2006-5-14 8596 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  UC1212523  Lomatium nevadense var. parishii E. B. Copeland 1930-6-27 Butte vicinity of Jonesville; Lassen National Forest 1500 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
  SEINET10873881  Lomatium utriculatum Mary Susan Taylor 1975-4-26 Taylor 530 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
  POM220124  Lonicera conjugialis H. F. Copeland 1928-8-18 460 Butte Neighborhood of Jonesville. 1524 Comment
  UC1562404  Lonicera interrupta Lowell Ahart 1990-6-16 6510 Butte sw Forbestown Generator (n side of the dirt road, se side of reservoir); Forbestown Reservoir 487 Comment
  CHSC61306  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte On the west side of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC109866  Lonicera maackii L. P. Janeway 2012-5-2 10814 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CAS-BOT-BC234842  Lonicera subspicata var. denudata John Thomas Howell 1962-6-15 37467 Butte Magalia 731 Comment
  CDA13829  Lotus corniculatus G. F. Hrusa, T. D. Wilfred 1996-9-5 13557 Butte Butte Basin; Bank of Butte Creek immed. below Western Canal District Dam. Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  UC80703  Lotus humistratus Mrs. R. M. Austin May 1883 46 Butte near Chico Comment
  UC171019  Lotus incanus H. M. Hall 1913-5-27 Butte Stirling City Sierra Nevada Mountains 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
  JEPS98308  Lotus purshianus var. purshianus Lowell Ahart 2000-6-27 8525 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  UCR219109  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  UC1594550  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  SEINET10452014  Lotus scoparius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4147 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  JEPS114736  Lotus strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  JEPS113455  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River 486 Comment
  RSA0036364  Lupinus albicaulis Daisie Huang 2006-8-3 06080306 Butte Butte. 1327 Comment
  UC725344  Lupinus albicaulis A. A. Heller 1941-5-22 16138 Butte on State Highway #24 about a half mi w Jarboe Pass; w of Jarboe Pass Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. Comment
  UC727154  Lupinus albifrons var. albifrons A. A. Heller 1938-4-23 15050 Butte between the Las Plumas Road and the summit on Highway #24, 20 mi e Oroville; e of Oroville 762 Comment
  CAS-BOT-BC196255  Lupinus albifrons var. eminens A. A. Heller 1938-4-23 15050 Butte Along Highway #24, near the junction with the Yankee Hill road Comment
  RSA256666  Lupinus benthamii var. benthamii Dave Knorr 1974-4-20 140 Butte On Orovilles Table Mtn. near Cherokee Rd. Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  SEINET10906992  Lupinus bicolor Mary Susan Taylor 1974-3-26 Taylor 96 Butte Ca. 1 mi E of Old City Dump, on Humboldt Rd, ca. 3 mi E of Chico; soil wet, rocky clay. Comment
  SEINET10970223  Lupinus bicolor subsp. tridentatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4123 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 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
  SEINET10452072  Lupinus densiflorus Lowell Ahart 1985-5-6 Ahart 4932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  CHSC84887  Lupinus grayi R. D. Fischer 2003-6-6 8 Butte Northern Sierra Nevada. Off hwy. 32 between the Butte Meadows turn-off and Potato Patch and 5.6 miles north of hwy. 32 on county rd. 27N08 (K-Line). There is a primitive campground along Deer Cr. right after crossing the single lane bridge. Found on the banks of road-cuts at campground turn-off. 899 Comment
  SEINET6655084  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 4721 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City.; 0 1500 Comment
  SEINET10485451  Lupinus latifolius Mary Susan Taylor 1982-8-16 Taylor 5002 Butte T24n, r4e, se1/4sw1/4, sec 1. Pulga nw quad. Corolla blue. At loop in rd Above discovery creek, ca 1 mi. N of bald mt., Ca 4 mi. Ne of sterling city. Open to sun, dry. With digitalis purpurea, ribes roezlii, gnaphalium thermale. 1585 Comment
  CHSC88969  Lupinus microcarpus var. densiflorus Christine Hantelman 2000-4-27 82 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  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
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC32763  Lupinus pachylobus J. D. Jokerst 1981-3-29 1280 Butte Top of North Table Mountain, ca. 1.0 mi N of Cherokee Rd. 373 Comment
  SBBG128005  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte ca. 70 yards E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  RSA699515  Luzula comosa Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 378 Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  UC600807  Luzula divaricata E. B. Copeland 1930-7-12 Butte Jonesville , highest Butte Creek Region (highest Butte Creek Region) Comment
  CHSC30511  Luzula macrantha J. D. Jokerst 1980-3-23 489 Butte Along Cherokee Flume. 0.5 mi W of Hwy 70, from its S end of Bridge over West Branch Feather River. Comment
  CHSC71659  Luzula parviflora Vernon H. Oswald; Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  JEPS120110  Luzula subsessilis Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC46307  Lythrum californicum Vernon Oswald 1985-6-5 1810 Butte River Rd. 0.5 mi sw of its jct. with Chico River Rd. 36 Comment
  UCD143100  Lythrum salicaria Barry Rice 2004-8-24 BR 040802 Butte Along east side of a Hwy 99, on the banks of a diversion from Thermalito afterbay. Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CAS-BOT-BC342718  Madia elegans Mrs. C. C. Bruce 1897-4-1 1986 Butte Forest - Ranch Comment
  CHSC101833  Madia exigua Lowell Ahart 2009-5-23 15757 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road. 381 Comment
  CHSC104747  Madia exigua L. P. Janeway 2010-6-19 10019 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CHSC48181  Madia gracilis Vernon Oswald 1984-5-21 1190 Butte Humbug Rd. (Centerville Rd.), 4.1 mi s-w of Nimshew Ridge Rd. 396 Comment
  SD5628  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  UC202669  Madia gracilis A. A. Heller 12816 Butte Butte Meadows 1402 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  SEINET10904899  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2707 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  JEPS120034  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. Comment
  CAS-BOT-BC345238  Madia subspicata Bruce G. Baldwin; Gerald D. Carr; Lowell Ahart 1988-6-9 713 Butte Peter Ahart Ranch, 1 mile north, 3 miles east of Honcut Comment
  CHSC12768  Magnolia grandiflora M. S. Taylor 1974-6-7 253 Butte Located ca. 50 ft s and ca. 100 ft e of the Chico State University Administration Building. Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 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. 1935 Comment
  CHSC60959  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  SEINET10475288  Malacothrix floccifera Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4244 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC11097  Malva nicaeensis Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10479995  Malva nicaeensis Mary Susan Taylor 1982-4-28 Taylor 4360 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC28446  Marah macrocarpa Robert A. Schlising; R. Waaland 1965-3-27 2764 Butte Just north of city Gridley limits, junction of Gridley Road and unnamed dirt road running west. Comment
  CHSC7074  Marsilea vestita Bryan C. Willingham 1969-4-20 15 Butte N side of Skyway, next diversion canal, 3 mi se Chico. 91 Comment
  UC672620  Marsilea vestita subsp. vestita Herbert L. Mason 1927-5-9 3706 Butte 15 mi w Oroville; Sacramento Valley Comment
  UCD169295  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte Gray Lodge State Wildfire Management Area, about 4 miles (air) southwest of Gridley. About 100 yards east of Parking Lot 10. 22 Comment
  CAS-BOT-BC348087  Matricaria discoidea Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC1206  Meconella californica S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  POM97344  Meconella californica R. M. Austin 1883-05 22 Butte Near Chico Comment
  SEINET12155158  Medicago arabica P. L. Ricker 1912-1 8952 Butte Chico Comment
  CHSC45286  Medicago lupulina Vernon Oswald 1987-5-12 2387 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, near the Crouch Ditch Dam. 79 Comment
  CHSC45287  Medicago minima Vernon Oswald 1987-4-6 2309 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. 80 Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC269384  Melica californica John Thomas Howell; H. Keith Wagnon 1980-5-26 53577 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC44575  Melica californica Lowell Ahart 1979-5-29 1893 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  SEINET10926809  Melica californica A. Arthur Heller 1918-5-5 Heller 13012 Butte Near Magalia in the yellow pine and oak belt (Q. kelloggii) on serpentine, where Cupressus macnabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  CHSC41169  Melica harfordii L. P. Janeway 1984-8-8 Butte Plumas N.F. ECOS plot 11-016. Near Day Meadow on upper New York Creek. 908 Comment
  CHSC49560  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  UCD80581  Melica torreyana CNPS SN Foothill Team 2005-5-25 SNFN 0170 a Butte City of Chico, Upper Bidwell Park, upslope on the east side of Big Chico Creek, about 300 m south of the northern boundary of Upper Bidwell Park. 278 Comment
  CHSC34144  Melissa officinalis L. Ahart 1981-9-27 3210 Butte On sides of dredger piles ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 294 Comment
  CHSC26619  Mentha canadensis M. P. Hayes 1977-9-24 116 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CDA5711  Mentha pulegium L. Ahart 2000-7-17 8593 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC196321  Mentha spicata A. A. Heller 1914-8-20 11687 Butte hills 8 mi n Oroville Comment
  UC872394  Mentzelia dispersa A. A. Heller 1917-7-26 12851 Butte Butte Meadows 1402 Comment
  CHSC29229  Micranthes californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2436 Butte SE corner of jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi s of Oroville. 365 Comment
  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
  CAS-BOT-BC348317  Micropus californicus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC348319  Micropus californicus Lowell Ahart 1980-5-4 2168 Butte Thermalito 65 Comment
  CHSC71108  Micropus californicus Jan Monelo 1989-4-11 8 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  SJSU10057  Micropus californicus C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  RSA754454  Micropus californicus var. californicus L. Ahart 2009-4-17 15554 Butte S slope of a ridge, about 300 yards W of Highway 32, near the S boundary, Upper Bidwell Park, about 5 air miles NE of Chico. 352 Comment
  UC831274  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 mi n Oroville Comment
  RSA126767  Micropus californicus var. californicus C. G. Albertus 1933-6-6 24 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CHSC46076  Microseris acuminata J. D. Jokerst 1983-4-4 1706 Butte Artificial vernal pools formed on the road below the powerline poles as it traverses the basalt ridge. SW of the junction of Keefer Lane and Cohasset Hwy, ca 300 meters south of Keefer Lane, P.G. and E. powerline easement. 109 Comment
  CHSC48183  Microseris douglasii subsp. douglasii Vernon Oswald 1988-4-28 3288 Butte Hwy 99 along the Thermalito Afterbay at Hwy 162 (west). Between the highway and the afterbay. 33 Comment
  CHSC48185  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3293 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence line. 54 Comment
  CHSC38598  Microsteris gracilis Vernon Oswald 1983-3-4 106 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. ca. 100 ft w of parking area P (2 mi e of the power lines). 207 Comment
  HSC32623  Mimulus angustatus Dave Knorr 1974-4-20 125 Butte On Cherokee Mtn., road about 1 mi. E of Cherokee Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  UCD122319  Mimulus aurantiacus var. grandiflorus J. I. Mallory 1968-5-29 288 Butte 3/4 mile northwest of Union Hill. 579 Comment
  POM43817  Mimulus bicolor R. M. Austin 1883-05 15 Butte Lomo. Comment
  CHSC118861  Mimulus glaucescens Christopher T. Ivey 2017-5-27 390 Butte Honeyrun Road,, about 4.5 km NE of bridge crossing Butte Creek, roadsie ditch on E side of road. 318 Comment
  CHSC113293  Mimulus guttatus Lowell Ahart 2014-4-9 19344 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  JEPS9651  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  UC886257  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  JEPS114717  Mimulus nasutus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  RSA4114  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  UC426954  Mimulus primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville 1500 Comment
  UC600645  Mimulus primuloides H. F. Copeland 1920-7-11 362 Butte Scotch John Meadow Jonesville Comment
  JEPS119684  Mimulus tricolor Lowell Ahart 2012-5-2 17962 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC208  Minuartia californica P. Delaplane 1965-3-10 39 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  UCD80209  Minuartia californica CNPS SN Foothill Team 2005-5-4 SNFN 0200 b Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CAS-BOT-BC388610  Minuartia douglasii John Thomas Howell 1978-4-17 52838 Butte Table Mountain 381 Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  CHSC28460  Mollugo verticillata R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. In sand of river bar. Comment
  JEPS29837  Mollugo verticillata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8581 Butte road to Centerville (about 200 ft e of its inception at the Paradise Road Junction) 60 Comment
  SEINET10899215  Mollugo verticillata Mary Susan Taylor 1978-9-8 Taylor 1884 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC58926  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CHSC94003  Monardella odoratissima subsp. pallida R. D. Fischer 2004-6-20 781 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  SD6867  Monardella odoratissima subsp. pallida Daniel Cleveland 1882-7-14 Butte Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  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
  UCD139994  Monochoria vaginalis John M. Tucker; B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station. Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  UC1564772  Monolepis nuttalliana V. Oswald and L. Ahart 1989-8-22 3959 Butte ca. 3.5 mi. (air) s.e. Jonesville (Butte Creek House Meadow on e. side of Humbug Rd., at the corral); Butte Creek House Meadow 1767 Comment
  RSA125169  Monolopia major Hartweg 1847-4-13 1789 Butte Sacramento [probably Sacramento Valley, ca. 55 miles north of Yuba City, near Oroville] Comment
  SEINET10572756  Montia Mary Susan Taylor 1980-5-27 Taylor 2652 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
  CHSC46092  Montia fontana subsp. amporitana L. P. Janeway; B. Castro 1989-1-29 3172 Butte North side of cyn of Big Chico Cr at upper edge of flat top of the spur ridge above the diversion; 3.1 mi E of Wildwood Ave via Upper Park Rd. 231 Comment
  POM101999  Montia parvifolia Mrs. R. M. Austin 1883-05 19 Butte Chico Creek Comment
  CHSC102477  Morus alba L. P. Janeway 2009-10-13 9951 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Big Chico Creek along South Rim Trail/Annie Bidwell Trail/Guardian Trail 275 m west of the high power lines. 109 Comment
  CHSC6601  Morus alba M. MacArthur 1968-4-23 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC64259  Muhlenbergia filiformis S. C. Morey 1983-8-1 650 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. Meadow. 1292 Comment
  SEINET10599802  Muhlenbergia filiformis A. Arthur Heller 1917-7-28 Heller 12833 Butte Moist open places in the yellow pine forest, Butte Meadows. Douglas fir, white fir, and incense cedar are also plentiful, Ceanothus cordulatus and Uva-ursi common shrubs. 1280 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC101163  Myosotis discolor Lowell Ahart 2009-5-15 15717 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
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC12765  Myosurus apetalus var. borealis T. Rinker 1974-4-23 23 Butte Found in vernal pool at Broyles Road and Hwy. 99, ca. 14 mi n of Chico. 54 Comment
  CHSC65460  Myosurus minimus Vernon Oswald 1984-3-28 1110 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n boundary of the park 1200 ft e of the Wildwood Ave. entrance. 86 Comment
  SEINET10536214  Myosurus minimus Mary Susan Taylor 1974-4-24 Taylor 187 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC33701  Myosurus sessilis L. Ahart 1981-4-6 2747 Butte SE of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC48456  Myriophyllum aquaticum Vernon Oswald 1987-5-3 2366 Butte East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC37394  Myriophyllum spicatum R. A. Schlising 1980-8-31 3978 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET11763780  Najas graminea H. L. Mason, Grant, V. 1946-1 13047 Butte near caretakers house, Greylodge Game Refuge Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  CHSC6666  Nassella pulchra Marilyn Lee 1968-4-19 132 Butte East side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary, Table Mt. Comment
  UCD13199  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC105821  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC91457  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  RSA699921  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where the road goes east to the water ditch, about 0.5 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  CHSC44336  Navarretia heterandra Lowell Ahart 1988-5-12 5997 Butte In a pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC44337  Navarretia heterandra Lowell Ahart 1988-4-29 5961 Butte Near the ditch which was part of Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC84275  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10216 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  CHSC91117  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET10869730  Navarretia intertexta Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4038 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
  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
  SEINET10496828  Navarretia leucocephala Mary Susan Taylor 1986-5-6 Taylor 5623 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  UCD48502  Navarretia leucocephala W. R. Powell 1968-4-23 1472 Butte 2 miles south-southeast of Oroville, Butte County, California. 71 Comment
  CHSC116695  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC91116  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  POM74522  Navarretia leucocephala subsp. leucocephala Edward Palmer 1892-6-7 2081 Butte Near Chico. Comment
  UC702921  Navarretia leucocephala subsp. minima Lewis S. Rose 1939-6-5 39196 Butte Honcut 30 Comment
  CAS-BOT-BC230473  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville, near Dry creek SW of Pentz Comment
  UC133838  Navarretia pubescens Mrs. R. M. Austin Apr 1883 268 Butte Comment
  CHSC28133  Navarretia tagetina J. D. Jokerst 1979-5-6 217 Butte Ca. 200 yds. nw of Rock Creek (w intersection of Rock Creek Road and Cohasset Hwy.). 106 Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  UC398653  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte about six mi e Chico (along Chico Creek); Chico Creek, e of Chico Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 Comment
  POM73813  Nemophila menziesii var. menziesii C. C. Bruce 1897-03 2036 Butte [No location information on label.] Comment
  CHSC90647  Nemophila pedunculata Lowell Ahart 2005-4-2 11694 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC39095  Nemophila spatulata Robert Schlising; R. Banchero 1980-6-2 3629 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  SEINET10535890  Nymphaea odorata Mary Susan Taylor 1977-10-10 Taylor 1517 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  JEPS80619  Orobanche fasciculata M. S. Taylor 1981-5-29 3814 Butte ca. 3 air mi. s.e. Pulga (ca. 0.5 mi. n. of 22N31, Chino Ridge); Pulga SW Quad., Chino Ridge 853 Comment
  CAS-BOT-BC213922  Orthocarpus bicolor A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. 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
  CAS-BOT-BC254368  Oryza sativa Lowell Ahart 1984-9-17 4793 Butte Peter Ahart Ranch, Honcut. About 2.25 miles N and 0.25 mile E of Honcut, about 12 miles S of Oroville 50 Comment
  SEINET10968176  Oryzopsis miliacea Lowell Ahart 1985-5-10 Ahart 4965 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC42637  Osmorhiza chilensis Vernon Oswald 1984-4-9 1133 Butte Feather Falls Trail, 2.1 trail mi from the trail head at the end of Bryant Ravine Rd. 457 Comment
  CHSC101813  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC31393  Oxalis corniculata J. D. Jokerst 1979-4-13 1192 Butte Top of North Table Mt., ca. 200 met N of the intersection of Cherokee Rd and the E edge of the mountain. Adjacent to vernal creek. 396 Comment
  JEPS122162  Oxypolis occidentalis Lowell Ahart 2014-8-13 19703 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 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
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC39336  Panicum acuminatum Lowell Ahart 1983-6-26 4138 Butte Along the edges of the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  CHSC37106  Panicum capillare L. Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS120150  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC181180  Paronychia ahartii Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UC177007  Parvisedum pumilum Mrs. R. M. Austin Butte Butte County Comment
  CHSC37107  Paspalum dilatatum L. Ahart 1982-10-15 3895 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC94686  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC618996  Paspalum dilatatum H. S. Yates 1936-8-19 6128 Butte 2 mi sse Nelson; Chico Quad. Comment
  CHSC37660  Paspalum distichum T. B. Devine 1981-9-3 764 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC112678  Paspalum urvillei Lowell Ahart 2013-7-1 18822 Butte Seep along road gutter, on the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC100417  Paxistima myrsinites L. P. Janeway; Heather Koeth 2008-11-19 9612 Butte Northern High Sierra Nevada. Along a small creek in a steep deep draw 150 m southwest of Bush Creek, 1.2 air km west-northwest of the mouth of Bus Creek at French Creek. 707 Comment
  CHSC51865  Paxistima myrsinites L. P. Janeway 1988-6-14 2781 Butte Near Ewalt Camp, mdw along W Br Butte Cr 2.0 mi E from hwy 32 by dirt rd. Near small creeklet. 922 Comment
  CHSC96237  Pectocarya pusilla R. Fischer 2006-4-10 992 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 rocky, spring covered, hillside overlooking Big Chico Creek. 518 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  CAS-BOT-BC69331  Pellaea brachyptera Lowell Ahart 1985-6-17 5053 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 Comment
  JEPS50783  Penstemon azureus Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9279 Butte along Feather River Highway (now Calif. 70) about 3 1/4 mi n Jarbo Gap; along Feather River Highway, n of Jarbo Gap 609 Comment
  SBBG28908  Penstemon deustus E. B. Copeland 1931-6-11 Butte Jonesville 1600 Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC94061  Penstemon heterophyllus var. purdyi R. D. Fischer 2005-6-12 738 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at theeast end of Humboldt trailhead in Bidwell Park. Roadside collection. 407 Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  JEPS93937  Penstemon laetus var. leptosepalus Vernon H. Oswald and Lowell Ahart 1998-8-11 9473 Butte Four Trees-Coyote Gap Road 0.1 mi w of Four Trees; Four Trees-Coyote Gap Road 1578 Comment
  UC454141  Penstemon laetus var. leptosepalus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM195088  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral. 1646 Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC43130  Penstemon personatus R. Banchero; R. Schlising 1981-7-19 609 Butte 1 mi e of Bald Mt lookout tower on Bald Mt. 1780 Comment
  CDA41988  Penstemon rydbergii var. oreocharis T. C. Fuller 1962-7-12 9198 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SBBG47401  Pentagramma pallida J. T. Howell 1962-6-16 37618 Butte Nelson Bar 213 Comment
  CHSC32623  Pentagramma triangularis M. S. Taylor 1981-3-31 3464 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  UCD137761  Pentagramma triangularis M. S. Taylor 1980-4-1 2425 Butte south side of Butte Creek, ca. 0.25 mile down stream from Honey Run Covered Bridge, ca. 6 miles east of Chico. 182 Comment
  CAS-BOT-BC77131  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 4105 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC32690  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-3-24 3439 Butte On s side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. 487 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 Comment
  CHSC36530  Perideridia bolanderi subsp. bolanderi L. Ahart 1982-6-4 3554 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC102818  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 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
  JEPS12431  Perideridia kelloggii W. S. Wilkinson 1921-7-16 Butte Chico Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  RSA0116107  Perideridia lemmonii Lowell A. Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC33972  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC38617  Persicaria hydropiper Vernon Oswald 1983-8-19 1012 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  CHSC73980  Persicaria hydropiper B. Castro 1995-9-10 612 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CAS-BOT-BC413704  Persicaria hydropiper Lowell Ahart 1987-10-22 5921 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  CAS-BOT-BC418950  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC418952  Persicaria lapathifolia Lowell Ahart 1981-8-15 3041 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC101117  Petrorhagia dubia Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4644  Petrorhagia dubia R. Carter 1966-4-26 368 Butte Found ca. 10 mi. NE of Oroville on E side of Oroville-Quincy Rd., .3 mi. S of intersection with USFS road 21N40 to Bloomer Mt., growing 10 yds. off road. 609 Comment
  JEPS114739  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 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 west of the Ponderosa Dam 258 Comment
  JEPS115837  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the 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
  HSC32615  Petrorhagia dubia R. A. Vanbianchi 1974-4-20 231 Butte Table Mtn. 305 Comment
  HSC46448  Petrorhagia dubia J. P. Smith, J. O. Sawyer 1973-4-14 6064 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  SEINET11931071  Petrorhagia velutina S. M. Bryan 1974-1 11 Butte Along N side of Cohasset Highway, 7 mi NE of Chico 457 Comment
  SEINET10546874  Phacelia Mary Susan Taylor 1979-10-5 Taylor 2229 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  JEPS50781  Phacelia corymbosa Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9281 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap 609 Comment
  RSA133602  Phacelia corymbosa L. R. Heckard, J. R. Sweeney 1953-4-27 347 Butte About 2.5 miles below (southwest of) Pulga, along Feather River Highway. 488 Comment
  UC671702  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  SD58482  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte 6.0 miles southwest of Stirling City, along road to Magalia. 792 Comment
  CHSC39104  Phacelia mutabilis R. A. Schlising 1982-7-21 4335 Butte N part of county, at E end of Philbrook Reservoir. 1691 Comment
  CHSC6182  Phalaris aquatica J. Wheeler 1968-5-16 356 Butte S side of e approach to the hwy. 32 Sacramento River Bridge. 45 Comment
  JEPS122160  Phalaris arundinacea Lowell Ahart 2014-8-13 19699 Butte On the southeast side of Humbug Summit Road, about 100 yards southwest of the Way Point, about 200 yards southwest of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC36521  Phalaris lemmonii L. Ahart 1982-5-10 3431 Butte On bottom of a vernal pool in the fields, Peter Ahart Ranch, Honcut, ca. 2.5 mi n and 1/4 mi e of Honcut. 50 Comment
  CHSC101119  Philadelphus lewisii Lowell Ahart 2009-5-23 15723 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  UC176134  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte 8 mi n Oroville (ditch along mountain); Table Mountain 182 Comment
  UC1564796  Phleum alpinum V. Oswald and L. Ahart 1989-7-12 3853 Butte ca 2 mi (air) sw Lotts Lake (ca 3 mi (air) se of Philbrook Reservoir, near the headwaters of Big Kimshew Creek); headwaters of Big Kimshew Creek, sw of Lotts Lake 1901 Comment
  CAS-BOT-BC250864  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  HSC38024  Phoradendron bolleanum Thomas W. Nelson, Jane Nelson 1976-5-10 2488 Butte Just E of Magalia Comment
  POM354301  Phoradendron bolleanum var. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia. Comment
  UC1194603  Phoradendron densum Del Wiens 1960-6-15 2727 Butte near Magalia (just n. of train depot) Comment
  CDA43066  Photinia serratifolia L. P. Janeway 2011-4-2 10236 Butte Sacramento Valley.; Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave. between Madrone Ave. and Crister Ave. 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
  CHSC1997  Phyla nodiflora var. rosea V. Holt 1935-9-1 Butte Dodge Lands. 30 Comment
  CHSC42121  Physalis lancifolia Lowell Ahart 1986-11-9 5439 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET11910680  Physocarpus capitatus M. S. Taylor, Hanson, L.; Phillips, H. 1981-1 3805 Butte Paradise SE quad. Phillips property, 685 Wagstaff,Paradise. Riparian Woodland in Yellow Pine forest; 579 Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  CHSC28827  Pilularia americana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 419 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd ( at e edge of mt). 381 Comment
  UC1549534  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Highway. 600 Comment
  SEINET10530649  Pinus attenuata Mary Susan Taylor 1981-4-16 Taylor 3548 Butte T21N R5E sw sec 24, Brush Creek quad. Both sides of Rd 21N80, ca. 1 mi NW of its jct with Zink Rd, ca. 1.5 mi NW of Big Bald Rock, ca. 2 air mi E of Lake Madrone. Yellow Pine Forest; 2900 ft. 884 Comment
  RSA572043  Pinus contorta var. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville. 1524 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC51945  Piperia unalascensis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3080 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  CAS-BOT-BC254405  Piptatherum miliaceum Lowell Ahart; Jokerst 1985-5-10 4965 Butte About 0.25 mile W of a small stream, 0.5 mile S of Box Hall Flat, about 1 mile E of Potter Ravine, about 2.75 miles NE of Oroville Dam 350 Comment
  CHSC34785  Piptatherum miliaceum L. Ahart 1981-9-26 3207 Butte Near the Sacramento River s of the washout, ca. 6 mi w of Chico. 40 Comment
  CHSC68710  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Below the cement of the low water crossing, Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC100502  Pittosporum tobira Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15421 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC20530  Pittosporum tobira Pamela Caldwell 1972-5-7 Butte Behind President's Mansion across roadway from CSUC. Comment
  SEINET10529830  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2316 A Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 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
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC101285  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
  CHSC29052  Plagiobothrys fulvus var. campestris R. A. Schlising 1980-4-20 3572 Butte Between Singer Creek and Cana/Pine Creek Road. Comment
  RSA189363  Plagiobothrys greenei L. S. Rose 1967-5-6 67056 Butte Oroville 52 Comment
  SD60250  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte Near the Hooker Oak, 4.0 miles east of Chico. Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  CHSC48000  Plagiobothrys scriptus Vernon Oswald 1984-3-9 1092 Butte In a track on the w side of Calif. Hwy 99E ca. 100 ft s of Broyles Rd. 59 Comment
  JEPS106005  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC103692  Plagiobothrys shastensis Lowell Ahart 2010-5-7 16619 Butte On rock outcrop, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  JEPS68118  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  UC718179  Plagiobothrys stipitatus Carl B. Wolf 1937-5-14 Butte 5 mi nw Chico (Hamilton City Road); Sacramento Valley 45 Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC103703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16653 Butte On the west side of old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Higway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC54380  Plagiobothrys stipitatus var. micranthus M. Bailey 1991-4-19 565 Butte At margin of seasonal drainage ca 200 ft e of Williams Road and ca 1/4 mi n of Pentz Road; near Wallis Ponds. 85 Comment
  CHSC90978  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS117194  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 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
  CHSC40445  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Around vernal pools, in one of the pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC90966  Plantago coronopus L. P. Janeway 2005-5-9 8385 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  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
  RSA590213  Plantago erecta Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7228 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC52186  Platanus racemosa Pauleen Broyles 1987-5-21 1054 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Occasional along Singer and Pine Creeks. Comment
  UC1185298  Platystemon californicus H. E. Brown Apr 15 1897-Apr 30 1897 167 Butte near Clear Creek; near Clear Creek 53 Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  RSA325024  Plectritis californica L. Ahart 1984-4-3 4538 Butte Along N Honcut Creek, 1 mile N and 2.7 miles E of Honcut, Peter Ahart Ranch. Foothill Woodland. 50 Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  UCD80810  Plectritis ciliosa CNPS SN Foothill Team 2005-3-22 SNFN 0063 c Butte CDPR, Oroville State Recreation Area, just south of a state park utility road out to water tanks; this road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  RSA325088  Plectritis ciliosa M. S. Taylor 1981-4-5 3491 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  SEINET10464977  Plectritis ciliosa Lowell Ahart 1984-4-3 Ahart 4538 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC14027  Plectritis macrocera Kathy Sommarstrom 1967-3-25 4 Butte Found 2 1/2 mi e of Golf Course in Bidwell Park, right side of road. 76 Comment
  POM181674  Plectritis macrocera subsp. macrocera Williams 1927-4-11 s.n. Butte Near Chico Comment
  CHSC40356  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte South of Willow Creek, about 100 meters south-west of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CAS-BOT-BC244401  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 0.5 mile SW of Forbestown Res., along the road, about 4 miles NE of Forbestown 450 Comment
  CHSC20455  Poa bulbosa C. Glascock 1965-4-6 304 Butte Ca. 1/4 mi. SE of intersection of Keefer Rd. and Cohasset, ca. 6 mi. NW of Chico. Comment
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UCD90391  Poa secunda E. B. Copeland 1943-7-13 s.n. Butte Butte Meadows. Comment
  RSA768981  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 351 Comment
  CHSC42403  Poa trivialis subsp. trivialis Lowell Ahart 1987-6-9 5731 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC38479  Pogogyne zizyphoroides Vernon Oswald 1983-5-8 455 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  UC140043  Pogogyne zizyphoroides Mrs. R. M. Austin Apr 1896 772 Butte Chico Comment
  SEINET10498988  Pogogyne zizyphoroides Mary Susan Taylor 1978-5-7 Taylor 1613 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC36070  Polycarpon tetraphyllum R. A. Schlising 1982-6-1 4297 Butte Chico; n end of Salem Street between 2nd Street and University campus; on sidewalk. Comment
  UCD98405  Polycarpon tetraphyllum L. Ahart 1976-4-27 1148 Butte Along North Honcut Creek. Near Honcut. 45 Comment
  CHSC24495  Polygala cornuta M. S. Taylor 1976-6-28 1162 Butte Ca. 150 ft w of Hwy 32, ca. 18 mi ne of Chico. 762 Comment
  CHSC64124  Polygala cornuta B. Castro 1987-9-12 220 Butte Ca 50 ft up from N edge of Butte Ck ca 0.4 mi S of the Ponderosa Way bridge, ca 0.3 mi S on the Butte Creek Trail. 609 Comment
  CHSC46194  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1912 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  SEINET10904502  Polygonum aviculare Mary Susan Taylor 1979-11-11 Taylor 2281 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  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
  JEPS98376  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte 13 air miles NE of Oroville (N side of Bean Creek Rd, 1/4 mi SE of Little Bald Rock, 1 1/4 air miles NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  CHSC38616  Polygonum californicum Vernon Oswald 1983-6-18 713 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Parking Area C at Horseshoe Lake. 100 Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 Comment
  CHSC45100  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  JEPS110129  Polygonum lapathifolium Lowell Ahart 2006-9-28 13371 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
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC100914  Polygonum minimum R. A. Schlising; Lawrence Janeway 1988-7-22 4624 Butte North of Philbrook Lake, near Plumas County line. 1935 Comment
  RSA31978  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte [Unspecified] 1524 Comment
  CDA22844  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte 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. Comment
  JEPS115153  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west 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
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CAS-BOT-BC233053  Polypogon interruptus Lowell Ahart 1987-5-27 5699 Butte On sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC233056  Polypogon interruptus Lowell Ahart 1980-7-29 2515 Butte Along lower Forbestown Road 750 Comment
  CHSC113205  Polypogon interruptus Lowell Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC4391  Polypogon interruptus V. Hagaman 1966-4-25 Butte Field on CSC campus. Comment
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  RSA715583  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD51660  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, 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 209 Comment
  SEINET10508535  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4237 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC24671  Polystichum californicum C. E. Stopher; K. R. Stern 1976-4-13 24 Butte 2.8 km sse of Forest Ranch. 489 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 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
  CAS-BOT-BC72298  Polystichum imbricans subsp. imbricans M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock Tunnel 487 Comment
  CHSC60945  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC82489  Polystichum imbricans subsp. imbricans Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9735 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UC1549529  Polystichum imbricans subsp. imbricans Lowell and Peter Ahart 1984-5-28 4648 Butte ca. 16 mi ne Oroville (ca. 1 mi ne of West Branch Bridge, ca. 2 mi s of Old Yankee Hill) 450 Comment
  UCR88931  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte Along the Biggs Princeton Hwy, under P.G. and E. power lines, about 1 mi west of Biggs 29 Comment
  JEPS95967  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte 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. Common 295 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  CHSC45607  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-28 2114 Butte Edge of ridge at Coyote Gap F.S. station. 1325 Comment
  CHSC45606  Potentilla glandulosa subsp. reflexa L. P. Janeway 1987-6-5 2153 Butte Upper reach of Carey Cr where rd 22N89 crosses it 0.5 mi from OroQuincy Hwy. Along rd. 1097 Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET9791606 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 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
  UCSC000640  Prunella vulgaris subsp. lanceolata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC43836  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-13 2200 Butte Flea Valley. 0.1 mi from Concow Rd on road into Flea Valley. 1127 Comment
  CAS-BOT-BC159923  Prunus emarginata H. F. Copeland 1920-8-29 160 Butte Jonesville wood 1219 Comment
  CHSC27236  Prunus lusitanica P. Moyer 1971-11-7 59 Butte CSUC Campus. E of campus annex next to main door of cafe. 60 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC116118  Pseudognaphalium luteoalbum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2015-11-14 20636 Butte On the bottom of the outlfow area at the bottom of Lake Francis Dam, Lake Francis, about 1 1/2 miles south of Dobbins. 479 Comment
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 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
  CHSC44372  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC65446  Pseudognaphalium thermale Vernon Oswald 1987-7-16 3121 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC6614  Pseudotsuga menziesii var. menziesii M. MacArthur 1968-6-17 302 Butte Parking lot NE of building V, Chico State College campus. 60 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC361828  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28826  Psilocarphus oregonus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 418 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Below high water mark of vernal pools. 381 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC72552  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 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
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  CHSC30770  Pyrola aphylla M. S. Taylor; R. S. Schlising 1980-7-6 3070 Butte On e side of Hwy 32, ca. 1 mi n of Soda Springs. 1280 Comment
  CHSC62549  Pyrola aphylla B. Castro; J. Jurewicz 1993-7-6 466 Butte Ca 2.5 mi SSW of Big Bar Mtn, on the N side of USFS Rd 22N84. 975 Comment
  UC177571  Pyrola picta H. M. Hall 1914-7-23 9778 Butte near Jonesville 1737 Comment
  UC474255  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville: Hill above the hotel Comment
  CDA13273  Pyrola picta var. dentata G. F. Hrusa, T. D. Wilfred 1996-7-9 13121 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC92544  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  RSA594187  Quercus chrysolepis S. O. Mattoon 1978-9-23 63 Butte Southern Cascade Mountains: Middle Fork Butte Creek Rim, Ponderosa Way Forest Road; 5 air miles NNW of Magalia. 762 Comment
  SEINET9006133  Quercus chrysolepis B. L. Wilson, L. Ahart, L. Janeway, P. F. Zika 2011-8-5 16769 Butte North edge of Lost Creek Reservoir dam 1017 Comment
  CAS-BOT-BC86633  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte Hills two miles N of Oroville Comment
  CAS-BOT-BC86103  Quercus dumosa John Thomas Howell 1955-6-15 30497 A Butte 6 miles from paradise on road to Pentz 426 Comment
  UCD46184  Quercus garryana H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico, Butte County. Comment
  SEINET10431579  Quercus kelloggii M. J. Williams 1967-4-22 s.n. Butte Near Feather Falls. 457 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 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
  CAS-BOT-BC104688  Quercus wislizeni J. E. Morrow 1934-10-26 s.n. Butte near Chico Comment
  CHSC81514  Quercus wislizeni John W. Hunt 2000-4-16 Butte On S side of Centerville Rd. ~2.5 miles E of Centerville cemetery and ~200 m E of bridge. 121 Comment
  CHSC90107  Quercus wislizeni var. wislizeni Charlie Crannell 1991-4-22 3 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  UCD47602  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Road to Table Mtn from Oroville. 293 Comment
  SEINET12094427  Ranunculus alismifolius Unknown 1983-1 353 Butte E. of Philbrook Reservoir at county line, T25N, R5E, sec. 16, Jonesville 15' quad 1975 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  CHSC46068  Ranunculus muricatus Kirsten Tarp 1983-5-31 286 Butte Nelson, in lawn in front of the Nelson Post Office. 36 Comment
  JEPS107343  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 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
  POM269273  Ranunculus muricatus Lyman Benson 1935-3-27 6361 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 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
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  UC478516  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  CHSC79557  Ranunculus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1997-5-1 13718 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  CHSC9697  Ranunculus occidentalis var. ultramontanus Nancy Mosman 1971-7-3 51 Butte In a meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  SD1766  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville 1500 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 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
  CAS-BOT-BC59925  Rhamnus ilicifolia Lowell Ahart 1980-5-17 2299 Butte 1/2 mi. se. of Hurleton. 600 Comment
  CHSC62490  Rhamnus ilicifolia B. Castro 1987-5-18 105 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive within general area of Foothill Woodland/Chaparral/Grassland mosaic. 445 Comment
  RSA719542  Rhamnus ilicifolia Michael A. Vincent, K. Levings 2006-7-29 12884 Butte Northeast of Chico along Rt. 32. Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  SD111937  Rhododendron occidentale Barbara Ertter, Peter Strachan, and Lowell Ahart 1980-5-8 3319 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Huncut between Marysville and Oroville. 49 Comment
  CAS-BOT-BC199747  Rhododendron occidentale var. californicum Clarence R. Quick 1952-6-29 52 -91 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  SEINET10454079  Rhus trilobata Mary Susan Taylor 1975-3-10 Taylor 417 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  JEPS109898  Rhynchospora capitellata Dean W. Taylor 2006-8-17 19608 Butte Bald Mt.; West Branch Feather River watershed; Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank 1676 Comment
  RSA718500  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Large soggy meadow opening along an upper Western branch of Keyser Creek; 0.7 km. southeast of Bald Mountain summit. 1681 Comment
  SBBG17304  Ribes bracteosum M. Vincent 1962-4-15 184 Butte The Skyway, 1 mi S of Stirling City Comment
  CAS-BOT-BC212669  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC212675  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville Comment
  LA205548  Ribes nevadense E. B. Copeland; 1931-7-31 647 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC212667  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  UC478510  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198955  Ribes roezlii var. roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada, on Chico-Lake Almanor Rd., Calif. Highway #32, approx. 5 mi. N Forest Ranch 914 Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CHSC65775  Rorippa curvisiliqua var. occidentalis Vernon H. Oswald 1996-4-10 7352 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 10.1 and Tract 10.2 (seasonal marshes), Sanctuary 1. 32 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 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
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35646  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 230 Butte On bank of irrigation ditch; along Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  CHSC108312  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico. 197 Comment
  CHSC50340  Rosa gymnocarpa Vernon Oswald 1990-5-14 4216 Butte Big Bald Rock located ca. 3 miles south of Brush Creek. At the picnic area. 966 Comment
  CDA35055  Rosa multiflora L. P. Janeway 2010-4-3 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. Comment
  CDA42879  Rosa multiflora L. Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  CHSC3640  Rosmarinus officinalis Alice L. Stoll 1966-2-16 9 Butte On Chico State College Campus, Chico. Comment
  CHSC117464  Rotala ramosior B. Castro; Sabrina Bell 2016-5-25 2134 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  JEPS98589  Rubus discolor Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 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. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A 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
  SEINET10483581  Rubus leucodermis Mary Susan Taylor 1977-11-12 Taylor 1538 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC52474  Rubus parviflorus L. P. Janeway 1987-6-27 2333 Butte Along dirt rd 0.6 mi E of Ramsey Bar; just N of 'The Big Hill'. At creeklet draining under the road. 1386 Comment
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  SEINET10474887  Rudbeckia hirta var. pulcherrima Mary Susan Taylor 1978-7-21 Taylor 1831 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  UC1586477  Rudbeckia occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4739 Butte 5.75 mi (air) ne of, just upstream from the bridge Brush Creek; Forest Rd 23N60, Jordan Creek-Marble Creek Rd, Oroville-Quin 1051 Comment
  CHSC102831  Rumex conglomeratus Lowell Ahart 2009-6-18 15912 Butte On the west side and bottom of the steep bank, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  UCD149829  Rumex lacustris Harry A. George 1967-7-4 s.n. Butte E. of Cresta Power Station. Comment
  CHSC52187  Rumex pulcher Pauleen Broyles 1987-5-21 1052 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  SD175847  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 06 343 Butte Along Butte Creek, north of Durham-Dayton Highway. 46 Comment
  CHSC90800  Sagina decumbens subsp. occidentalis Lowell Ahart 2005-5-2 11776 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
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS22785  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC113972  Sagittaria montevidensis subsp. calycina Lowell Ahart 2014-10-14 19883 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC30984  Sagittaria montevidensis subsp. calycina M. S. Taylor 1978-7-22 1852 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in ricefield. 30 Comment
  UC478542  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Kirby's Meadow Jonesville (Field No. 315) 1750 Comment
  CDA9268  Salix exigua D. G. Kelch 2006-8-2 06 .346-B Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UC1134902  Salix exigua var. hindsiana C. G. Albertus 1933-6-6 19 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC104074  Salix hindsiana Lowell Ahart 1987-5-6 5540 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC108807  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC109116  Salix lasiolepis Lowell Ahart 2012-3-9 17771 Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles sooutheast of Oroville. 45 Comment
  POM219072  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville. Near the head of N Willow Creek. 1550 Comment
  CHSC103226  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road. 63 Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  CHSC8617  Salvia sonomensis L. V. Ritter 1969-5-2 311 Butte Ca. 2 mi. w of Cohasset; ca 10 yds. s of Cohasset highway. Comment
  POM71110  Salvia sonomensis C. C. Bruce 1897-05 1983 Butte Forest- Ranch. Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  SEINET12319553  Salvia sonomensis S. R. Johnson 1978-1 18 Butte Ca 22km N of Chico, ca 5km S of Cohasset 590 Comment
  SEINET12319556  Sambucus mexicana Unknown 1977-1 25 Butte ca.2 mi NW of Chico on W side of Hwy99. Richardson Springs Quadrangle Comment
  CHSC45960  Samolus parviflorus Lowell Ahart 1984-7-25 4762 Butte Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Along the wet edges of North Honcut Creek. 42 Comment
  CHSC101262  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  SEINET10454563  Sanicula bipinnata Mary Susan Taylor 1976-3-9 Taylor 1021 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  SEINET10972970  Sanicula bipinnata Mary Susan Taylor 1973-1 Taylor 36 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC60948  Sanicula graveolens Lowell Ahart 1993-6-26 7045 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  UC635842  Sanicula graveolens Herbert F. Copeland 1938-7-4 Butte canyon of Jones Creek Jonesville 182 Comment
  CHSC101186  Sanicula tuberosa L. P. Janeway; B. Castro 2009-4-18 9727 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 733 Comment
  CHSC42672  Sanicula tuberosa Vernon Oswald 1985-4-3 1696 Butte Concow Rd. n of Lake Concow. 792 Comment
  UC600604  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville Comment
  UC1564797  Saxifraga bryophora V. Oswald and L. Ahart 1989-7-12 3849 Butte 3 air mi se of Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  RSA699518  Saxifraga californica R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower E side. along road leading to old pistol range at bottom of the nearly sheer road cut. Tuscan Formation and N facing 76 Comment
  JEPS115232  Saxifraga integrifolia Lowell Ahart, John Dittes 2009-3-20 15510 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  CHSC3979  Scandix pecten-veneris E. P. Parreno 1967-4-10 Butte Ca. 400 yards upstream from Covered Bridge. Comment
  CHSC65191  Scandix pecten-veneris Lowell Ahart 1995-5-30 7586 Butte Along the edge of Beatson Hollow Creek, about 1 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 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
  SEINET10472666  Schoenolirion album Mary Susan Taylor 1977-6-25 Taylor 1391 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC111374  Schoenoplectus acutus var. occidentalis Lowell Ahart 1981-8-31 3061 Butte Wyandotte Lake, E or Oroville. 450 Comment
  CAS-BOT-BC30746  Scirpus congdonii Lowell Ahart 1987-7-8 5813 Butte Along Walker Plains Road, about 1/8 mile north of coyote Gap, about 5 miles east of Pulga 1280 Comment
  UC1100855  Scirpus maritimus Herbert L. Mason 1945-9-19 12732 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  CHSC57150  Scirpus microcarpus L. P. Janeway 1988-6-25 2890 Butte Ca 1/8 mi from Bull Hill Road up a small creek towards Bull Hill, 2.5 mi from Skyway. 1508 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  JEPS115817  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, on the east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  SFV3445  Scrophularia californica subsp. floribunda M. L. Vincent 1962-4-17 199 Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  CHSC103229  Scutellaria tuberosa L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9978 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC31155  Scutellaria tuberosa M. S. Taylor 1979-5-4 1995 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  SEINET12326930  Scutellaria tuberosa Unknown 1981-1 14 Butte ca 150 m W of Butte Creek & 1.2 km N of Magalia Reservoir, 2.5 km N of Magalia 735 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 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
  CHSC87928  Secale cereale Lowell Ahart 2004-5-17 10936 Butte On the south side of the Midway, about 1/2 mile east of the railroad, about 1 1/2 miles northeast of Durham. 54 Comment
  CHSC90600  Sedella pumila John P. McKeon 1980-4-24 12 Butte Ca. 30 m s of jct of Hwy 32 and Humboldt Rd. 20 m e of Hwy 32. 8.3 km e of Chico. 265 Comment
  UCD101999  Sedella pumila Sue Wagener 1955-4-24 46 Butte Elliot Spring Memorial on the Durham-Paradise Road. Comment
  CHSC94240  Sedum spathulifolium Lowell Ahart 2006-5-10 12627 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
  UCD102081  Sedum spathulifolium P. Thompson 1996-4-26 35 Butte Highway 70. Belden. Along the north entrance of the Pacific Crest Trail. 304 Comment
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Apr 5 2013
  CAS-BOT-BC62119  Selaginella hansenii John Thomas Howell 1962-6-16 37617 Butte Nelson Bar 213 Comment
  HSC66337  Selaginella hansenii M. S. Taylor 1980-3-8 2370 Butte Shady train 100 ft. SW of Pulga Bridge over Hwy. 70, 28 mi. NE of Oroville 488 Comment
  SEINET10470991  Selaginella hansenii A. Arthur Heller 1902-5-6 Heller 5466 Butte Berry Canon, near Clear Creek. Comment
  JEPS113218  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  HSC85711  Selaginella wallacei L. P. Janeway 1984-10-20 1185 Butte Along dirt road 1.25 mi. E of Bilsap Bar, above the middle fork of the Feather River 640 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC86439  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 81 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  SEINET10475268  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  RSA755040  Senecio vulgaris L. Ahart 2009-5-15 15692 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CAS-BOT-BC364546  Senecio vulgaris Lowell Ahart 1985-3-24 4867 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  SEINET10938098  Senecio vulgaris Mary Susan Taylor 1981-5-1 Taylor 3580 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
  SEINET10612365  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Butte County: Individual, Ea. 100 yards south of Junction 4th & Citrus Avenue Avenue, Chico. Tree 100 feet tall. Ornamental planting in exposed r. grassland area. Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 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
  JEPS97334  Setaria parviflora Lowell Ahart 1995-8-19 7615 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  CHSC47640  Setaria pumila Lowell Ahart 1975-6-23 801 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. 42 Comment
  SEINET10609515  Setaria pumila Lowell Ahart 1995-8-19 Ahart 7615 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. Foothill Woodland. 37 Comment
  CHSC102964  Setaria viridis Lowell Ahart 2009-7-9 16021 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
  RSA724995  Setaria viridis L. Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC31809  Sherardia arvensis L. Ahart 1970-4-4 37 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  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
  JEPS102345  Sibara virginica Lowell Ahart 2001-4-27 8733 Butte 1 3/4 mi W of Honcut (just NW of bridge across Wyandotte Creek, N of Lower Honcut Road, 125 yds W of the railroad) 26 Comment
  SEINET10940380  Sibara virginica Lowell Ahart 1985-3-14 Ahart 4846 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  RSA755757  Sidalcea calycosa subsp. calycosa L. Ahart 2009-5-23 15764 Butte West side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, bout 10 miles northeast of Chico. 382 Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  POM282877  Sidalcea glaucescens Lyman Benson 1932-7-28 3960 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  JEPS94724  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  UCD80451  Sidalcea malviflora CNPS SN Foothill Team 2005-5-24 SNFN 0172 b Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  SEINET10480011  Sidalcea oregana subsp. spicata Mary Susan Taylor 1975-8-31 Taylor 882 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
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CHSC118500  Silene laciniata subsp. californica L. P. Janeway 2016-5-9 11955 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC24673  Silene laciniata subsp. californica S. Deaton 1976-4-14 17 Butte Ca. 2 1/2 mi n of Feather Falls parking lot, 15 ft off nw side of Falls trail. 853 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CHSC48345  Sisymbrium irio Vernon Oswald 1984-3-24 1103 Butte Chico Municipal Airport, ca. 200 ft e of the e end of Piper Ave. 82 Comment
  CHSC29735  Sisymbrium officinale J. D. Jokerst 1980-4-17 593 Butte Top of North Table Mt. 472 Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  SEINET10905129  Smilacina racemosa Mary Susan Taylor 1981-5-21 Taylor 3783 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 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
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 Comment
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  JEPS95793  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CHSC43636  Solidago elongata Vernon Oswald 1983-8-4 954 Butte Near Big Chico Creek in a meadow. 1292 Comment
  UC600517  Solidago elongata H. F. Copeland 1920-7-12 450 Butte Jonesville Comment
  UC195368  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte near Durham Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65193  Soliva sessilis Lowell Ahart 1995-5-30 7575 Butte Along the edge of the dirt road, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  UCD169794  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave). 59 Comment
  CHSC117004  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 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
  CDA42873  Sonchus oleraceus L. Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC48916  Sorbus scopulina Vernon Oswald 1985-8-4 1921 Butte Humboldt Rd. at Butte Creek Bridge s of Cherry Hill. On the bank of the creek. 1432 Comment
  CHSC48917  Sorbus scopulina Vernon Oswald 1985-6-3 1804 Butte At the Butte Creek Bridge on Humboldt Rd. just w of Cherry Hill. 1414 Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC46366  Spartium junceum Lowell Ahart 1989-5-23 6260 Butte Growing along the edge of a small stream, at the small bridge on Swedes Flat Road, about 1/12 mile east of the Oroville Bangor Highway, north of Bangor. 243 Comment
  CHSC51876  Spartium junceum L. P. Janeway 1988-6-5 2733 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC51877  Spartium junceum L. P. Janeway 1988-6-14 2792 Butte Ridgetop along hwy 32 0.9 mi N of Ten Mile House. 518 Comment
  JEPS115601  Spartium junceum Lowell Ahart 2009-5-23 15743 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  CHSC44488  Spergula arvensis subsp. arvensis Lowell Ahart 1988-5-12 5989 Butte Pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC50032  Spergula arvensis subsp. arvensis Lowell Ahart 1990-1-17 6406 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  JEPS103379  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte 7 air mi S of Oroville (E side of Lone Tree Road, 1 1/8 mi N of Cox Lane, 3 air mi SW of Palermo) 35 Comment
  JEPS114737  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS117229  Spergularia bocconi Lowell Ahart 2010-5-7 16610 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  CAS-BOT-BC390128  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10537501  Spergularia rubra Mary Susan Taylor 1981-5-27 Taylor 3804 A Butte T23N R3E se sec 12, Paradise SE quad. Prostrate mats in beaten path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 2600 ft. 792 Comment
  CHSC30082  Spiraea densiflora M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3213 Butte Humboldt Peak, on the top. 2154 Comment
  CHSC39396  Spiraea douglasii L. Ahart 1983-9-17 4440 Butte Ca. 1/4 mi se of Stirling City. 1100 Comment
  CHSC45807  Spiraea douglasii L. P. Janeway 1988-7-2 2940 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  SBBG28490  Spiraea douglasii E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  UC481510  Spiraea douglasii H. F. Copeland 1927-9-3 Butte Jonesville Comment
  CHSC51948  Spiranthes porrifolia L. P. Janeway 1988-7-29 3136 Butte Near W Br Feather River at crossing of rd into Coon Hollow. 1615 Comment
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  JEPS108129  Sporobolus creber 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
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CHSC39397  Stachys pycnantha L. Ahart 1983-9-17 4428 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC99474  Stachys pycnantha Lowell Ahart 2008-7-23 15146 Butte 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
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 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
  UC128776  Stachys pycnantha Miss Kate Conger 1907-1 Butte Brush Creek. Comment
  SEINET10537441  Stellaria Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4198 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  UC1609347  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte about 1 mi se Butte Meadows; Bolt Creek 1325 Comment
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC107231  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC32765  Stellaria media J. D. Jokerst 1981-3-29 1279 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC38305  Stellaria media Vernon Oswald 1982-12-3 19 Butte Bidwell Park, Chico, along edge of road leading to Police Pistol Range. 85 Comment
  JEPS118041  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  CAS-BOT-BC395112  Stellaria nitens Ira L. Wiggins 1925-3-25 1440 Butte On road one half mile above Pence on Pence-Magalia road Comment
  CAS-BOT-BC395119  Stellaria nitens G. A. Fischer 1929-6-28 63 Butte Chico Meadows, Lassen Forest 1341 Comment
  JEPS113238  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  JEPS99035  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC38392  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-7-3 801 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 280 Comment
  CHSC44157  Stephanomeria lactucina V. Oswald; L. Ahart 1988-7-29 3641 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  SEINET10506971  Stipa Mary Susan Taylor 1981-5-14 Taylor 3718 Butte T22N R6E sw sec 16, Pulga SE quad. S side of 23N00.2 in open landing area and edge of Yellow Pine Forest, ca. 2 mi SW of Merrimac. 3700 ft. 1128 Comment
  CHSC39964  Streptanthus longisiliquus L. Ahart; P. Ahart 1983-6-30 4187 Butte Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. 1100 Comment
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC75483  Streptanthus polygaloides G. F. Hrusa; T. D. Wilfred 1997-5-8 13747 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  CHSC78133  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 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
  UC1492815  Streptanthus polygaloides Freed W. Hoffman