Search Results — 2000 specimen records retrieved (1598 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  CHSC97424  Acer glabrum var. torreyi Robert Fischer 2006-6-11 1015 Butte Butte Meadows. North-east corner of Butte County along county road 26N27 north of the Humboldt Road junction. 1676 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC81448  Acer macrophyllum Sabrina Wright 2000-4-18 Butte North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Approximately 50 ft from edge of water. 914 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CHSC77293  Acer negundo var. californicum L. P. Janeway 2000-3-29 6641 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  CAS-BOT-BC21747  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte South of Oregon Gulch Road, 335 Comment
  CHSC104816  Achillea millefolium Lowell Ahart 2010-6-12 16792 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 349 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
  CHSC43184  Achnatherum latiglume Robert Banchero 1981-7-21 623 Butte 2 air mi se of Jonesville, Snow Mt. 2011 Comment
  CAS-BOT-BC210639  Achnatherum lemmonii R. A. Schlising 1978-4-23 3229 Butte Magalia; just s of the Magalia Reservoir (just w of S. T. RR and Coutelenc Road) Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC69118  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte East of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC3192  Achyrachaena mollis Dona Kingsford 1966-4-23 Butte 6.9 miles SW of Hooker Oak Tree, Chico. Comment
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  CHSC65985  Achyrachaena mollis Vernon H. Oswald 1996-5-9 7546 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In the S paddock of Tract 7, Sanctuary II (formerly irrigated pasture). 32 Comment
  CHSC87564  Achyrachaena mollis R. D. Fischer 2004-4-20 148 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off Guardian Trail north of Disk Golf Course. 320 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC28476  Acmispon americanus var. americanus Robert Schlising 1979-8-17 3467 Butte Richvale vernal pools. 1/4 mi s of jct hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC42108  Acmispon americanus var. americanus Lowell Ahart 1986-11-14 5479 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC49839  Acmispon brachycarpus Vernon H. Oswald 1990-4-2 4140 Butte East side of Feather River in Oroville, Montgomery St access. Near the river directly w of Montgomery St. 42 Comment
  JEPS120584  Acmispon brachycarpus Lowell Ahart 2013-11-18 19281 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  UCD103752  Acmispon denticulatus A. A. Heller 1914-3-28 11238 Butte Hills 8 miles north of Oroville. Comment
  UCD103753  Acmispon denticulatus A. A. Heller 1914-5-1 11342 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC113918  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC50549  Acmispon nevadensis var. nevadensis Vernon Oswald; Lowell Ahart 1990-7-5 4349 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS122002  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte 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. Comment
  JEPS119692  Acmispon wrangelianus Lowell Ahart 2012-5-2 17956 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA4207A  Aconitum columbianum var. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  SEINET10473552  Adenocaulon bicolor Mary Susan Taylor 1976-5-5 Taylor 1120 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CAS-BOT-BC133127  Adenostoma fasciculatum Ella Dales Cantelow 1940-5-10 4293 Butte E. of Oroville, Old road to Bucks Lake Comment
  SEINET10483637  Adenostoma fasciculatum Mary Susan Taylor 1975-4-25 Taylor 494 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  CHSC106576  Adiantum jordanii C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  OBI69160  Adiantum jordanii Kari Fisher, Bill Fisher 2000-11-10 54 Butte Bidwell Park, along Chico Creek path 82 Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  CHSC44185  Agoseris grandiflora V. Oswald; L. Ahart 1988-7-13 3576 Butte Road to High Lakes E of Philbrook Resevoir. 1859 Comment
  CHSC86134  Agoseris grandiflora John Dittes; Josephine Guardino 2002-6-21 619 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC87555  Agoseris grandiflora R. D. Fischer 2004-4-13 58 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on ridge edge near beginning of Bloody-Pin trail. 457 Comment
  CAS-BOT-BC22963  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC22968  Agoseris heterophylla Lowell Ahart 1981-4-24 2788 Butte Near North Honcut Creek 150 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  UC1562347  Agrimonia gryposepala Vernon Oswald and Lowell Ahart 1990-7-31 4423 Butte ca 4 mi n Concow (meadow at headwaters of Concow Creek); Concow Creek 1097 Comment
  SEINET10509386  Agropyron intermedium var. trichophorum Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  JEPS127630  Agrostis capillaris B. Castro with Melinda Carlson 2007-10-25 1681 Butte Confluence of Big Chico Creek and Sacramento River. W of River Road and N of the creek within surrounding disturbed riparian forest. Comment
  JEPS98555  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S and N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  JEPS94728  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte about 7 air mi n of Oroville (w of the lone oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CAS-BOT-BC139716  Agrostis gigantea M. S. Taylor 1978-7-21 1796 Butte Lake Madrone at its south junction with Oroville-Quincey Highway ca. 10 miles northeast of Oroville. 609 Comment
  CHSC96787  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC44450  Agrostis microphylla Lowell Ahart 1988-5-28 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS110248  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS98494  Agrostis pallens Lowell Ahart 2000-6-29 8538 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  CAS-BOT-BC47976  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Lower foothills, eastern outskirts of Oroville Comment
  CHSC92548  Aira caryophyllea L. P. Janeway 2005-3-10 8345 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CHSC33669  Alisma lanceolatum L. Ahart 1981-5-25 2838 Butte Bottom of a deep wash, on Peter Ahart Ranch, ca. 2 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 Comment
  CAS-BOT-BC465444  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  JEPS110416  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large 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
  CDA13302  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13150 Butte Plumas National Forest; Above USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC37129  Allium membranaceum R. A. Schlising 1980-6-17 3742 Butte Paradise Lake, n of Magalia; ne corner of lake. 731 Comment
  CHSC49482  Allium neapolitanum Vernon Oswald 1984-3-28 1109 Butte Chico-Butte Ciy Hwy (Seven Mile Lane), 6.3 mi s of its jct. With Ord Ferry rd. Comment
  POM110048  Allium peninsulare var. peninsulare C. C. Bruce 1897-03 1900 Butte Chico. Comment
  SEINET10471994  Allium sanbornii var. jepsonii Mary Susan Taylor 1982-6-24 Taylor 4750 Butte T22N R4E se sec 23. Berry Creek quad. On serpentine rdcut, w side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70; ne of Oroville. 2200 ft. 670 Comment
  CHSC49479  Allium sanbornii var. sanbornii Vernon Oswald 1987-7-29 3157 Butte Humboldt Rd. 0.6 mi e of Lomo. 1219 Comment
  CHSC35098  Allophyllum divaricatum R. A. Schlising 1981-6-13 4079 Butte Pulga, roadside. Comment
  CHSC63542  Allophyllum divaricatum Vernon H. Oswald 1994-4-14 6108 Butte Old railroad grade along the N. Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  SEINET10478440  Alnus rhombifolia Mary Susan Taylor 1975-10-4 Taylor 961 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
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC138037  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1.5 mile north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC113278  Alopecurus carolinianus Lowell Ahart 2014-4-26 19417 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC27056  Alopecurus carolinianus Lowell Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CHSC50066  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 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
  UC1146635  Alopecurus saccatus Freed W. Hoffman 1942-4-20 2237 Butte near Pentz Pentz Comment
  SEINET10511199  Alopecurus saccatus A. Arthur Heller 1914-4-24 Heller 11318 Butte Chico-Oroville road 9 miles from Chico. Comment
  CHSC65416  Amaranthus Vernon Oswald 1988-8-8 3685 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between hwy 149 and Dry Creek. 57 Comment
  CHSC26667  Amaranthus albus M. S. Taylor; M. Hayes 1977-8-16 1442 Butte Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC83056  Amaranthus albus Lowell Ahart 2002-10-17 9985 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
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 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
  CHSC102397  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 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
  HSC97057  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  UCD128817  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  UCR66526  Amelanchier alnifolia H. F. Copeland 1929-6-10 1208 Butte Northern Sierra Nevada Mtns., Jonesville 1524 Comment
  CHSC60585  Amelanchier utahensis Vernon H. Oswald; Lowell Ahart 1993-4-19 5285 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Between creek and the lookout. 774 Comment
  JEPS118411  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  JEPS120552  Ammannia coccinea B. Castro, Margie Graham 2006-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ~ 100 ft S of dirt road crossing the canal. Comment
  CHSC84033  Ammannia robusta Lowell Ahart 2003-6-19 10294 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CDA42886  Amorpha californica L. Ahart 2012-5-12 18027 Butte North side of a deep drainage, north of the large meadow, northeast of the old homestead, 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
  CHSC37415  Amsinckia intermedia R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4005 Butte NW of Oroville and n of Thermalito Forebay in the Campbell Hills. 106 Comment
  CHSC90931  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
  CHSC33135  Amsinckia menziesii J. D. Jokerst 1980-4-17 604 Butte Top of Table Mt, - N of Cherokee Rd. 426 Comment
  CHSC37420  Amsinckia menziesii R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4004 Butte NW of Oroville and n of Thermalito Forebay, in the Campbell Hills. 106 Comment
  CHSC38785  Andropogon virginicus var. virginicus Vernon Oswald 1983-9-25 1047 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  JEPS98685  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC54546  Anthoxanthum odoratum Vernon H. Oswald; Lowell Ahart 1991-8-19 4834 Butte South side of Humbug Rd between Chaparral Guard Station and Memorial Spring, ca. 3.5 miles (air) southeast of Butte Meadows. 1554 Comment
  RSA791504  Anthriscus caucalis George K. Helmkamp, E. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10547818  Antirrhinum cornutum Mary Susan Taylor 1980-7-6 Taylor 3050 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
  CHSC25351  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-10 26 Butte 100 m from the intersection of Pulga Rd. and Highway 70, along Pulga Road. 426 Comment
  CHSC84169  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2003-7-10 10370 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC12931  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-1 188 Butte Found in yard at 1332 Elliott Rd., Paradise. 609 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
  CHSC96833  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  UCR231504  Apocynum androsaemifolium Anna M. Hurlbutt 2009-8-7 021 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC40376  Apocynum cannabinum Lowell Ahart 1985-6-30 5072 Butte Along edge of the Oroville Bangor Highway, 100 yards east of the intersection with Wyandotte Miners Ranch Road, about 7 miles south-east of Oroville. 274 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  CHSC48312  Arabidopsis thaliana Vernon Oswald 1985-4-5 1702 Butte Cohasset Hwy at Cohasset Springs. On the slope above the horse trough. 286 Comment
  SEINET7258049  Arbutus menziesii M. J. Williams 1967-4-15 s.n. Butte Feather River Highway 671 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CAS-BOT-BC407718  Arceuthobium abietinum Vernon Oswald; Lowell Ahart 1987-7-1 3070 Butte Logging road ca. 2.5 air mi. S of Humbug Summit and 0.25 mi. W of the Butte-Plumas county line, ca. 5.25 miles SE of Jonesville 1999 Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633009  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27465 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC24411  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Huboldt Grade, about 12 mi. from Chico. Comment
  CAS-BOT-BC38865  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CAS-BOT-BC38870  Arctostaphylos manzanita subsp. manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51542 Butte In foothill woodland south of Chrokee on road to Oregon City. Comment
  CHSC38435  Arctostaphylos manzanita subsp. manzanita Vernon Oswald 1982-12-17 24 Butte Bidwell Park, Chico, near the road ca 100 ft E of the parking area 2.7 mi E of the junction of Upper Park Rd and Wildwood Ave. 115 Comment
  UC535023  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 88 Butte about 12 mi from Chico; Humboldt Grade Comment
  CAS-BOT-BC38563  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51561 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38604  Arctostaphylos mewukka subsp. truei A. A. Heller; H. E. Brown 1902-5-8 s.n. Butte Berry Canyon, near Clear Creek 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
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  SBBG103606  Arctostaphylos mewukka subsp. truei J. T. Howell 1976-4-2 51569 Butte Paradise 609 Comment
  CAS-BOT-BC45565  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 640 Comment
  CAS-BOT-BC45570  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  UC129116  Arctostaphylos patula Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10449252  Arctostaphylos patula Mary Susan Taylor 1981-5-21 Taylor 3780 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  UCD51949  Arctostaphylos truei John Thomas Howell 1975-6-15 51092 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SBBG126077  Arctostaphylos viscida subsp. viscida L. Ahart 2012-3-2 17762 Butte ca 200 yards N of Ten Mile House Rd, ca 200 yards W of Hwy 32, ca 9 mi NE of Chico 422 Comment
  CHSC41391  Arenaria kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC108855  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte On the south side of Guardian trail, about 40 yards southwest of Pine trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. 361 Comment
  UC176145  Aristolochia californica A. A. Heller 1913-3-9 10687 Butte hills 2 mi. n. of Oroville Comment
  SEINET10475905  Aristolochia californica Mary Susan Taylor 1981-3-16 Taylor 3407 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10971029  Aristolochia californica Mary Susan Taylor 1973-1 Taylor 35 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12089667  Aristolochia californica E. B. Ferry 1977-1 1 Butte 2.2 km ESE of Chico, 0.3 km N of State Hwy 32, near south bank of Chico Creek 100 Comment
  CHSC46233  Arnica dealbata Pauleen Broyles 1987-7-5 1071 A Butte Ca 7 km n of Inskip and .4 km s of Bull Hill Road where it crosses Coon Creek. On n side of Coon Creek. 1530 Comment
  CAS-BOT-BC295867  Arnica dealbata F. N. Bassett 1923-7-23 s.n. Butte Jonesville via Butte Meadows Comment
  CAS-BOT-BC90290  Artemisia douglasiana John Thomas Howell 1961-9-22 36721 Butte Bank of Feather River, Oroville 53 Comment
  POM193103  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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  SEINET10474104  Artemisia douglasiana Mary Susan Taylor 1975-8-31 Taylor 894 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC93885  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  SBBG17264  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Rd, 3 mi NE of Centerville 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
  CHSC20541  Asclepias eriocarpa M. S. Taylor 1975-6-30 810 Butte Fields on e side of Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  SEINET10961641  Asclepias eriocarpa R. Carter 1966-7-6 Carter 465 Butte 7 mi E of Oroville on E side of Feathervale, 0.23 mi S of intersection of Wyandotte-LaPorte Rds. 244 Comment
  JEPS120898  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 10 yards N of the Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  JEPS345  Aspidotis californica R. M. Austin Apr. 1883 Butte Big Chico Canyon Comment
  CHSC96826  Aspidotis densa Lowell Ahart 2007-5-29 13966 Butte On the east side of Bald Rock Dome, Dome Trail at the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  UC398878  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET10473398  Aster Mary Susan Taylor 1977-11-12 Taylor 1537 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  POM193102  Aster occidentalis var. occidentalis E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC831  Astragalus pauperculus V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  JEPS87417  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CAS-BOT-BC68692  Athyrium filix-femina var. californicum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi. ne of Stirling City. Pulga NW quad. 1463 Comment
  CAS-BOT-BC68686  Athyrium filix-femina var. californicum Lowell Ahart 1981-9-15 3153 Butte Sierra Nevada - One hald mile N of the Lost Creek Reservoir 1100 Comment
  SEINET10532290  Athyrium filix-femina var. californicum Mary Susan Taylor 1981-4-28 Taylor 3569 B 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
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC12168  Athysanus pusillus Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SFV1397  Athysanus pusillus M. L. Vincent 1961-3-28 36 Butte Sierra Nevada Skyway on road from Paradise to Chico; 2 miles west of Paradise. 300 Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  SEINET11924836  Atriplex cordulata A. Ahart, Taylor 1982-1 3861 Butte About 1/10 mi SE of the Gray Lodge Waterfowl Management Area Headquarters, about 12 mi SW of Gridley 30 Comment
  CHSC37077  Atriplex heterosperma L. Ahart 1982-9-9 3766 Butte On sides of deep ditch, near water line on bare soil, ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC46869  Atriplex heterosperma Vernon Oswald 1989-9-6 3988 Butte Gray Lodge Wildlife Area just w of Parking Area 2. 19 Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS124325  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA518702  Azolla filiculoides Lowell A. Ahart 1990-5-20 6473 Butte About 1/4 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road, about 4.5 miles south-west of Oroville 30 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  SEINET10474447  Baccharis glutinosa Lowell Ahart 1984-10-14 Ahart 4814 Butte On dry gravel and sand bars along North Honcut Creek, ca. 3/4 mi N and 2 mi E of Honcut, on Joie Osgood property, ca. 12 mi S of Oroville. Foothill Woodland; 40 m elev. 40 Comment
  CHSC63694  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte On the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  CHSC34781  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte On S side of rd, a little E of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi W of Pennington Rd, ca. 12 mi SW of Gridley. 35 Comment
  CHSC84645  Baccharis salicifolia Matt Quinn 2001-4-24 58 Butte Found on gravel bar along Big Chico Creek, at Day Camp beach, in Upper Bidwell Park. 94 Comment
  RSA276695  Bacopa repens J. M. Tucker 1953-8-28 2684 Butte Biggs Rice Experiment Station Comment
  CHSC30034  Barbarea orthoceras L. Ahart 1980-5-19 2314 Butte Along the edges of the South Fork of the Feather River, near bridge, ca. 1/8 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. 800 Comment
  CHSC48313  Barbarea orthoceras Vernon Oswald 1987-4-6 2306 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. Flood plain of the creek. 80 Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CAS-BOT-BC16790  Barbarea verna Lowell Ahart 1980-5-19 2314 Butte Near bridge, South Fork of Feather River. 800 Comment
  CHSC44474  Berberis aquifolium var. dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  CHSC20531  Berberis aquifolium var. repens Pamela Caldwell 1972-3-2 Butte CSUC campus. S side of Bidwell Mansion entrance. 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
  HSC103997  Bidens frondosa L. Ahart 2013-11-17 19259 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  CAS-BOT-BC102072  Bidens frondosa Forman T. McLean 1921-9-29 23 Butte Chico Comment
  SEINET10473661  Bidens frondosa Lowell Ahart 1983-9-17 Ahart 4433 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected from wet portion of Chico Meadows north of pond. 1371 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
  SEINET10973129  Boisduvalia glabella Mary Susan Taylor 1980-6-29 Taylor 2992 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  SEINET10874029  Boisduvalia stricta Mary Susan Taylor 1980-5-31 Taylor 2755 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-BC418407  Boykinia occidentalis Lowell Ahart 1985-6-30 5072 Butte East of dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 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
  CDA1771  Brachypodium distachyon L. Ahart 2002-5-7 9634 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC110143  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 Comment
  CHSC78221  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  RSA0036437  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  CHSC35009  Brassica rapa R. E. Preston 1982-3-2 181 Butte Old County Dump site, ne corner of jct of Humboldt Rd and Bruce Rd; ca. 3 mi e of downtown Chico. 86 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
  CHSC82678  Briza minor Tara Morgan 2002-5-7 55 Butte It was located within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 546 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  UCD57483  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles N of Oroville. Comment
  UCD139106  Brodiaea californica Robert E. Preston 2003-5-11 2132 a Butte ca. 5.25 mile east of Durham, along Pentz Road, 0.65 mile east of Hwy 99. 74 Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CHSC39341  Brodiaea elegans Lowell Ahart 1983-6-26 4146 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  CHSC22948  Brodiaea minor Robert A. Schlising; Et al. 1964-6-11 2721 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  JEPS107547  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  SEINET8466117 Image available Brodiaea minor Lincoln Coonstance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills Comment
  UC3332  Brodiaea minor Carl Purdy 1821-1 Butte Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows 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
  CHSC91667  Brodiaea sierrae Lowell Ahart 2005-7-13 12152 Butte About 100 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
  RSA726808  Bromus carinatus L. Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UCD58286  Bromus carinatus A. A. Beetle 1941-6-27 2741 Butte 20 miles northeast of Chico. Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  UCD58519  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  SEINET6778864  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CDA42866  Bromus hordeaceus L. Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38796  Bromus hordeaceus Vernon Oswald 1983-4-10 321 Butte Upper Bidwell Park, Chico, on the n side of the canyon at Salmon Hole. 188 Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  CHSC96992  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada. Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC27704  Bromus laevipes Robert A. Schlising; Coleta Lawler 1978-5-27 3281 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road. Comment
  CHSC54117  Bromus laevipes Vernon H. Oswald; Lowell Ahart 1991-5-13 4579 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). All along the trail. 213 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
  SEINET10507835  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC87950  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east 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
  UC1609036  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte about 5 1/2 air mi ne of Feather Falls (on w side of dirt rd about 1/2 mi nw of Camp 18) 1097 Comment
  CAS-BOT-BC161503  Bromus tectorum Javier Penalosa 1962-6-18 2463 Butte Near confluence of French and Peavine Creeks. 609 Comment
  NY664734  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather river near Stirling Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  JEPS87443  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  JEPS128725  Callitriche fassettii Lowell Ahart, Emily Meigs Doe 2017-4-1 21388 Butte East of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 Comment
  CHSC112907  Callitriche marginata B. Castro; Robin Carter 2011-4-29 1872 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  SEINET10457154  Callitriche marginata Mary Susan Taylor 1978-4-14 Taylor 1560 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  NY18988  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC2223  Calochortus albus N. Maxwell 1929-4-24 Butte Centerville Road. 152 Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  SEINET10872528  Calochortus albus Mary Susan Taylor 1980-4-27 Taylor 2567 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  HSC31876  Calochortus amabilis Steven Lagos 1974-4-20 16 Butte 2 mi. S of Cherokee Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  RSA377381  Calochortus luteus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC12171  Calochortus monophyllus Lowell Ahart 1973-5-6 Butte Near Challenge. 762 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
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  JEPS119588  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC33858  Calochortus nudus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 852 A Butte Chico meadows, ca 100 met N of Scout Rd, 1.1 mi W of it's jct with Humboldt Rd. 1341 Comment
  CHSC38875  Calochortus superbus Vernon Oswald 1983-5-18 505 .1 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC96412  Calochortus tolmiei L. P. Janeway 2006-5-14 8598 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
  UCD111664  Calochortus tolmiei Christopher Mallek 2008-1 HW1- 1 -c Butte Magalia. 756 Comment
  UC478519  Caltha biflora E. B. Copeland June, 1930 639 Butte Jonesville. 1550 Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  UC596512  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  CAS-BOT-BC270008  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC93880  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8637 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 856 Comment
  POM196501  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
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  UC727113  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte e of, Jarboo Pass on the Feather River Highway Oroville 609 Comment
  UC88992  Calycadenia oppositifolia Mrs. R. M. Austin May 1883 Butte Comment
  CHSC110254  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  RSA739862  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills, Upper Bidwell Park, Chico, S edge of the top of N Rim overlooking Beaar Hole 291 Comment
  CAS-BOT-BC275376  Calycadenia truncata var. truncata H. M. Hall 1914-7-18 9756 Butte Little Chico Creek 152 Comment
  CAS-BOT-BC275381  Calycadenia truncata var. truncata A. A. Heller 1938-6-14 15152 Butte On Highway 24, 23 miles E of Oroville Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  UC600415  Calyptridium umbellatum H. F. Copeland 1932-8-22 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  JEPS109588  Calystegia atriplicifolia subsp. buttensis Dean Wm. Taylor, Tom Engstrom 2002-7-3 18213 Butte logging road ca. 0.2 miles E of Highway 32, 1.9 miles South of Lomo (road 160G 0.6 miles South of Highway 32) 1158 Comment
  CAS-BOT-BC221231  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-6-16 2796 Butte Above Cedar Creek along road 3.9 mi from Lomo 1249 Comment
  CAS-BOT-BC496961  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CHSC46226  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1061 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  CHSC108832  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  JEPS107339  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  UC1609149  Cardamine nuttallii Vernon H. Oswald and Lowell Ahart 1993-4-21 5293 Butte Path along Butte Creek Canal ca 1.0 mi n of its jct with Hendricks Canal (n of De Sabla); along Butte Creek Canal, n of De Sabla 853 Comment
  CHSC33723  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte At end of Dark Canyon Rd near turnout and restroom, up from boat ramp to W Br Feather River, ca. 3.5 mi s of Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  JEPS107336  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 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
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CHSC28968  Cardamine pachystigma var. dissectifolia J. D. Jokerst; M. S. Taylor 1980-2-23 443 Butte Magalia Serpentine outcrop. Ca 400 met NE of jct of Skyway and Coutelenc Rd. 701 Comment
  CHSC32738  Cardamine pachystigma var. dissectifolia M. S. Taylor; L. Hanson 1981-4-10 3524 Butte On n facing slope, from creek to ridge ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 822 Comment
  CHSC88087  Carduus pycnocephalus R. D. Fischer 2004-4-18 172 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Lower Yahi Trail between Alligator Hole and Day Camp, 75 ft. w. Carex barbarae trail sign. UTM: 10606018E 4403002N. 95 Comment
  SEINET10474145  Carduus pycnocephalus Mary Susan Taylor 1980-5-24 Taylor 2746 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET260322  Carex Lowell Ahart 1988-4-15 5960 Butte P. Ahart Ranch ca 1.5 mi N and 1 mi E of Honcut ca 12 mi S of Oroville 37 Comment
  CAS-BOT-BC18463  Carex abrupta L. P. Janeway 1986-9-1 1826 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52280  Carex abrupta L. P. Janeway 1987-7-4 2426 Butte NW-facing slopes above Last Chance Cr; along road to Jnes Meadow 9.6 mi from Inskip. 1676 Comment
  JEPS122146  Carex abrupta Lowell Ahart 2014-8-13 19707 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET8986974  Carex abrupta L. Janeway, Gog, L 2008-1 3191 (A & B) Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC45243  Carex amplifolia S. C. Morey 1983-7-23 573 Butte On n side of Humboldt Rd., ca. 32. mi e of Butte Meadows. 1414 Comment
  SEINET11634878  Carex amplifolia Unknown 1985-1 5077 Butte E of dirt road to Forbestown Res., about 2.5 mi NE of Forbestown, E of road to Forbestown Res. 869 Comment
  CHSC36066  Carex angustata J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Concow Creek in an open meadow at its headwaters. 1097 Comment
  CHSC51503  Carex angustata S. C. Morey 1983-7-25 626 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC53712  Carex angustata L. P. Janeway; C. A. Janeway 1986-8-31 1814 Butte Near the Picnic Area on the NE side of Philbrook Reservoir. Grassy meadow a little away from the lake. 1691 Comment
  CHSC53713  Carex angustata L. P. Janeway 1987-6-27 2346 Butte Meadow just east of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CHSC88225  Carex angustata Lowell Ahart 2004-7-23 11310 Butte In a small bog, on the south side of the dirt road, about 200 yards east of the large bog, about 3/8 mile (air) east of Bald Mountain Lookout, about 4 1/4 miles (air) northeast of Stirling City. 1702 Comment
  CHSC85914  Carex aquatilis var. aquatilis L. P. Janeway; Gavin Blosser, John Hunt 2003-4-22 7764 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  SEINET10856119  Carex athrostachya Edwin B. Copel 1928-7-28 Copeland 607 Butte Jonesville. About the edges of the ''Lily Pond'', a permanent pool, warm in summer. 1770 Comment
  CAS-BOT-BC19105  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC44691  Carex aurea L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3085 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC45242  Carex aurea S. C. Morey 1983-7-24 625 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  SEINET10905651  Carex brainerdii Mary Susan Taylor 1978-5-6 Taylor 1578 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC41227  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Along intermittent creek that drains Box Hall Flat. Ca. 1.0 mile east of Potter Ravine, north of adjacent to to Lake Oroville. Comment
  CHSC52857  Carex densa L. P. Janeway 1988-6-26 2883 Butte SE rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi NE of the power lines (high voltage). 182 Comment
  JEPS120128  Carex densa Lowell Ahart 2012-5-20 18095 Butte About 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northest of Chico. Comment
  CHSC45078  Carex echinata subsp. echinata Vernon Oswald 1983-7-6 829 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 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
  CHSC92414  Carex feta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10502 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS84) 1551 Comment
  RSA770105  Carex feta L. P. Janeway, B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  SEINET4231831 Image available Carex feta L. Janeway, Castro, B 2009-1 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  HSC87238  Carex fracta L. P. Janeway 1988-6-16 2811 Butte Along Butte Creek, 1.4 mi. S of Humboldt Rd. via the road in the W side of the canyon 1265 Comment
  POM213963  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  CAS-BOT-BC28377  Carex gracilior Lowell Ahart 1977-6-16 1440 Butte Peter Ahart Ranch, Honcut. Along the banks of North Honcut Creek. 50 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC63288  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  JEPS105634  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
  SEINET7560148 Image available Carex gracilior L. P. Janeway, Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Oroville Dam Quad 7.5' quad. Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oroville, 2.1 km east of the Bidwell Bar Bridge, next to Craig Saddle Boat-in Campground. 290 Comment
  CAS-BOT-BC146661  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  SEINET4286136 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 C Butte Just east of Philbrook Resevoir. Comment
  CHSC44168  Carex integra V. Oswald; L. Ahart 1988-7-26 3621 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  JEPS121935  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  SEINET7562437 Image available Carex integra Lowell Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UCD140469  Carex inversa Peter F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway's Station, Sacramento Valley. 50 Comment
  CHSC45080  Carex jonesii V. Oswald; L. Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CAS-BOT-BC7779  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Southeast of Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  JEPS121925  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC31118  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  CHSC113413  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC39584  Carex multicaulis Vernon Oswald 1984-5-25 1208 Butte Upper Bidwell Park, Chico, about 1000 ft w of the e end of Yahi Trail. On an elevated bank near Chico Creek. 207 Comment
  CAS-BOT-BC32155  Carex multicaulis John Thomas Howell 1955-6-14 30469 Butte De Sabla Comment
  SEINET11634492  Carex multicaulis M. S. Taylor 1981-1 3435 Butte along Feather River Hwy 70 just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville 518 Comment
  UCD140695  Carex nudata L. P. Janeway; The CSUC Bio 352 Class 1988-4-24 2641 Butte along West Branch Butte Creek around 2 mile north of Platte Mountain. 845 Comment
  RSA769169  Carex pendula P. F. Zika 2010-5-16 24824 Butte Shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico, Janeway s station, Sacramento Valley 45 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC44994  Carex simulata S. C. Morey 1983-7-23 580 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC61511  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  JEPS120138  Carex subfusca Lowell Ahart 2012-5-17 18085 Butte On both sides of horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  UC406290  Carex subfusca E. B. Copeland 1929-7-20 51 Butte Jones Creek Jonesville 1500 Comment
  CAS-BOT-BC116743  Carex subfusca L. P. Janeway 1988-6-14 2772 Butte Ewalt Camp, along W branch Butte Cr. 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  SEINET7577159 Image available Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CHSC99390  Carex whitneyi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10532 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. Upslope from creek. 1740 Comment
  CHSC75551  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SEINET13723638  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  SEINET10549323  Castilleja affinis Lowell Ahart 1985-5-10 Ahart 4947 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  JEPS124196  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19962 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  JEPS57364  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1923 Butte 2 mi s Naranja (along Oroville-Bangor road) 182 Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  JEPS46014  Castilleja applegatei subsp. pinetorum L. R. Heckard 1956-8-6 822 Butte just e Butte Meadows (along the road to Jonesville) 1371 Comment
  CHSC3752  Castilleja attenuata R. L. Adams 1964-4-12 79 Butte 200 yds. E. Manzanita School on Manzanita Ave. NE Chico. Comment
  HSC32626  Castilleja attenuata Linda M. Barker 1974-4-20 155 Butte Table Mtn., Central Valley 305 Comment
  UCD122339  Castilleja attenuata Michael A. Vincent; Ethan H. Freid 1998-4-6 8128 Butte Table Mountain. Comment
  JEPS103430  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS4554  Castilleja campestris subsp. campestris R. F. Hoover 1938-4-24 3252 Butte 3 mi e Richvale Comment
  CHSC9268  Castilleja exserta D. C. Burns 1971-4-4 120 Butte Ca. 20 yds. e of highway 70, ca. 7 mi n of Oroville. 82 Comment
  CHSC33145  Castilleja lacera James D. Jokerst 1981-5-11 1310 Butte Top of Doe Mill Ridge. 457 Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC1724  Castilleja pruinosa H. Summers 1929-3-11 Butte Richardson Springs Road. 152 Comment
  CHSC40883  Castilleja pruinosa Lowell Ahart 1985-5-15 5002 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC444430  Castilleja rubicundula subsp. lithospermoides A. A. Heller 1914-5-8 Butte Clear Creek; ; Clear Creek, Butte Co. 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
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  CAS-BOT-BC48810  Ceanothus cuneatus John Thomas Howell 1975-6-15 51079 Butte about 5 miles from Paradise on Skyway to Chico Comment
  SEINET10493627  Ceanothus cuneatus Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  RSA755786  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-3-27 DOB 815 c Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1 road mile from Centerville Road on Bean Flat Road, 15.1 kilometers 74 degrees true ENE of Chico. 243 Comment
  CAS-BOT-BC50785  Ceanothus integerrimus B. D. Stark 1929-7-26 598 Butte Pardise Comment
  SBBG28487  Ceanothus integerrimus A. A. Heller 1938-5-28 Butte Feather River Hwy, near Pulga 420 Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. Comment
  CHSC31410  Ceanothus lemmonii Leslie Steidl 1980-4-10 14 Butte Ca. 17 mi ne of Oroville, ca. 2 yd e of Lumpkin Rd and 10 yd n of Mc Cabe Creek. SW1/4 of NE1/4 of NE1/4 of SE1/4. 390 Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC52014  Ceanothus prostratus C. R. Quick 1947-10-2 47 -86 Butte Lewis Ridge, near Mooreville Ridge, just above Los Creek Reservoir, N of Clipper Mills on LaPorte Road, Plumas N.F. Comment
  RSA107845  Ceanothus prostratus L. S. Rose 1955-6-14 55098 Butte De Sabia. 732 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  CAS-BOT-BC52016  Ceanothus prostratus H. D. Thiers 1969-6-8 23444 Butte Forest Service road between McCloud and Dunsmuir, about 8 miles from Dunsmuir 1371 Comment
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  SEINET13946044 Image available Ceanothus prostratus Lewis S. Rose 1955-1 55098 Butte De Sabla; 2400 ft alt. 732 Comment
  UC79907  Ceanothus velutinus Mrs. R. M. Austin July, 1896 757 Butte Colby Comment
  CHSC106237  Celtis australis L. P. Janeway; B. Castro 2010-6-4 9990 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek; at junction of South Park Drive and Centennial Ave. 79 Comment
  RSA769801  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  CHSC295  Centaurea solstitialis E. Walker 1932-6-21 Butte Durham. Comment
  JEPS117547  Centaurium muehlenbergii Lowell Ahart 2010-6-20 16828 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS98330  Centaurium muehlenbergii Lowell Ahart 2000-6-21 8496 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC30949  Centaurium tenuiflorum Lowell Ahart 1980-7-4 2451 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  CHSC66662  Centromadia parryi subsp. rudis Vernon H. Oswald; Lowell Ahart 1996-7-22 8096 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 edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Sanctuary II. 33 Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 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
  CAS-BOT-BC388176  Cerastium fontanum Lowell Ahart 1987-5-22 5679 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  JEPS122229  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  SEINET10932393  Ceratophyllum demersum Mary Susan Taylor 1975-10-4 Taylor 960 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
  CAS-BOT-BC179512  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of Sierra near Forest Ranch. Between Chico and Forest Ranch, 14 mi from Chico. 609 Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC28911  Chamaebatia foliolosa M. S. Taylor 1980-2-17 2363 Butte Along a dirt road in Yellow Pine Forest, ca. 1/4 mi sw of lover Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET7042405  Chamaebatiaria millefolium A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC6636  Chamaecyparis lawsoniana M. MacArthur 1968-6-12 367 Butte S side of Administration Building, Chico State College campus. 60 Comment
  JEPS83926  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-4 832 Butte 0.4 mi wsw intersection of Hwy 99 and Cana Hwy; Vina Plains 56 Comment
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  CDA38811  Chamaesyce maculata L. Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  JEPS102333  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  CHSC45277  Chamaesyce nutans Vernon Oswald 1988-10-29 3721 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC26627  Chamaesyce ocellata M. P. Hayes 1977-9-12 124 Butte In the area of the gardens on Butte College Campus at the corner of Pentz and Clark roads. 90 Comment
  CHSC45714  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park area above golf course and rifle range. Comment
  CHSC110329  Chamaesyce serpillifolia subsp. serpillifolia B. Castro; Margie Graham 2006-8-24 1604 Butte Sacramento Valley. Ca 1,8 mi W of Hwy 99 and 1 mi E of Richvale, ).25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft from toe of E levee. 32 Comment
  CHSC50995  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-7-4 6542 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
  CHSC51261  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UC1564751  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  SEINET10971573  Cheilanthes californica Lowell Ahart 1983-5-28 Ahart 4023 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  SEINET10529874  Cheilanthes cooperae Mary Susan Taylor 1979-5-4 Taylor 1990 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC23659  Cheilanthes gracillima M. S. Taylor 1976-4-24 1069 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC48289  Chenopodium album Vernon Oswald 1987-8-9 3195 Butte Hwy 32 n of Forest Ranch at the 35.9 mi road marker, 2.1 mi sw of Lomo. 1127 Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  SEINET10479016  Chenopodium botrys Lowell Ahart 1985-5-6 Ahart 4936 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  JEPS114681  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-7-23 15147 Butte N edge of the South Fork of the Feather River, about 10 yds E of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosa Dam 258 Comment
  UC474265  Chimaphila menziesii E. B. Copeland 1930-7-21 Butte hill above hotel Jonesville Comment
  CDA20065  Chondrilla juncea E. Finley 2002-10-2 PDR 1035510 Butte Northern California; Lumpkin Rd near Enterprise Bridge. 0 Comment
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  POM219417  Chrysolepis sempervirens H. F. Copeland 1928-8-14 215 Butte Neighborhood of Jonesville, on dry ridge above Scotch-John Creek. 1829 Comment
  CHSC302  Cirsium andersonii E. Walker 1932-7-25 Butte Magalia. Comment
  CHSC38338  Cirsium vulgare Vernon Oswald 1982-12-17 22 Butte Bidwell Park, Chico, 400 ft nw of the parking lot at Diversion Dam. 134 Comment
  JEPS119724  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte About 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC438980  Cistanthe monosperma J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC90196  Clarkia arcuata Camela J. Ott 1989-4-11 11 Butte Ca. 100 m s of covered bridge, 10.2 km ese of Chico. 200 Comment
  HSC23365  Clarkia arcuata Carolyn Fante 1971-4-13 27 Butte W side of road on Table Mtn. 396 Comment
  RSA32759  Clarkia arcuata A. A. Heller 1938-4-17 15041 -a Butte Back of Salmon Hole on Chico Creek east of Chico Comment
  CAS-BOT-BC164135  Clarkia concinna L. P. Janeway 1993-6-16 4390 Butte Upper east-facing slopes of North Fork Feather River Canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap 670 Comment
  CAS-BOT-BC164137  Clarkia concinna Lowell Ahart 1980-5-25 2341 Butte Along Ponderosa Way 600 Comment
  CHSC3275  Clarkia concinna subsp. concinna M. L. Hillier 1966-5-11 Butte On a ledge above Honeyrun Rd. 2.4 miles e. of covered bridge. Comment
  CAS-BOT-BC164519  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis; M. Roberts 1951-5-19 830 Butte Road from Nimshaw to Butte Creek canyon, 2.3 mi. above bridge across Big Butte Creek Comment
  CAS-BOT-BC171879  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-6-12 8783 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC39036  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1983-7-22 4429 Butte E part of county, SE of Brush Creek on Milsap Bar Road, at crossing of Indian Creek; roadside. 853 Comment
  CHSC100858  Clarkia mildrediae subsp. mildrediae B. Castro; David Toren 2005-7-21 1521 Butte Ca 8.5 air mi NE of Paradise, on slopes just W of Lockerman Ck. On NW-facing roadcut by USFS Rd 24N13, about 5 ft off road. 890 Comment
  CHSC64115  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi northeast of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls. 914 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 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
  JEPS119894  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2012-6-5 18165 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  CHSC60837  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1993-6-22 5554 Butte Powellton Rd., 2.1 mi N of Doe Mill Rd. (Ponderosa Way), N of De Sabla. 963 Comment
  CHSC60997  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte Lumpkin Ridge, about 1 1/2 miles east of Camp 18, about 6 1/2 (air) miles north-east of Feather Falls. 1219 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
  CAS-BOT-BC164798  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill 560 Comment
  RSA325882  Clarkia rhomboidea L. Ahart 1983-6-26 4118 Butte Along Ponderosa way (Big Ridge Road), ca. 2 miles SE of the jct with Oroville-Quincy Hwy, ca. 15 miles NE of Oroville. 500 Comment
  SEINET12194214  Clarkia rhomboidea L. Ahart, Ahart, P. 1984-1 4651 Butte On a large road cutbank along Hwy. 40, now called Dark Canyon Rd., ca 2 mi E of Old Yankee Hill; 450 Comment
  UCD21830  Clarkia rhomboidea L. D. Gottlieb 1993-8-27 9320 Butte 1 mile south of Big Bend Rd. on Dark Canyon Road. Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CAS-BOT-BC439111  Claytonia exigua subsp. exigua Ahart; Jokerst 1985-3-24 4859 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
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  SEINET10572704  Claytonia parviflora Mary Susan Taylor 1982-5-2 Taylor 4394 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
  CHSC101765  Claytonia parviflora subsp. parviflora Lowell Ahart 2009-5-15 15719 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
  CHSC56067  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-6-16 2804 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. 1310 Comment
  JEPS119842  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte About 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA712990  Claytonia perfoliata L. Ahart 2006-4-28 12546 Butte 3/4 mile NW of Iron Gate along Cherokee Road, N TAble Mtn, 7 miles air N of Oroville 318 Comment
  SFV11272  Claytonia perfoliata M. L. Vincent 1963-6-8 397 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UC726960  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico Comment
  CHSC24684  Claytonia rubra subsp. rubra D. Hattem 1976-4-10 4 Butte Population ca. 125 m e of e border of Upper Bidwell Park, Chico, ca. 50 m n of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC36361  Claytonia rubra subsp. rubra J. D. Jokerst 1982-5-19 1575 Butte Abundant in open rocky areas on top of Lumkin Ridge. North of Lumpkin Ridge Rd. 1280 Comment
  CHSC3749  Claytonia rubra subsp. rubra R. L. Adams 1964-4-12 59 Butte Skyway, 1/2 mi. S. on Elliott Rd. Paradise. 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
  CHSC107391  Clematis lasiantha Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CDA24214  Clematis ligusticifolia D. G. Kelch 2006-8-2 06 .335B Butte Along Ord Ferry Rd. Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  RSA325883  Clematis ligusticifolia L. Ahart, P. Ahart 1983-7-24 4215 Butte S32 at the Forbestown Reservoir, 5 miles NE of Forbestown, Yellow Pine Forest. 450 Comment
  CHSC1733  Collinsia heterophylla R. M. Staley 1952-7-15 Butte Honey Run. 106 Comment
  CHSC3817  Collinsia sparsiflora L. E. Dunkel 1965-2-23 1 Butte Along road bank ca. 200 yards e of covered bridge, on centerville road of Butte Canyon. 54 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS103388  Collinsia tinctoria Lowell Ahart 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  POM219432  Collomia grandiflora E. B. Copeland 1931-6-14 677 Butte Jonesville. 1550 Comment
  UC478480  Collomia grandiflora E. B. Copeland 1930-7-16 Butte Jonesville 1600 Comment
  CHSC26171  Collomia heterophylla J. P. Kroessig 1977-6-14 39 Butte Ca 8 km n and w on dirt road at n end of Concow Road, ca 13 km ne of Paradise. 1100 Comment
  CHSC93069  Collomia heterophylla L. P. Janeway 1994-5-26 4654 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank. 1226 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
  JEPS87193  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC1623  Comandra umbellata subsp. californica V. Holt 1935-5-3 Butte Butte Creek. Bank of road cut. 121 Comment
  CHSC31656  Convolvulus arvensis L. Ahart 1978-7-15 1784 Butte Peter Ahart Ranch, Honcut. On dry bare soil near the garden. 50 Comment
  CHSC441  Convolvulus arvensis E. Walker 1932-7-24 Butte Durham. Comment
  UCD126193  Convolvulus arvensis A. A. Heller 1916-9-8 12657 Butte near Durham. Comment
  SEINET5766733 Image available Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-1 1732 Butte Under Abies, Humboldt Summit above Jonesville, Butte County, alt. 6650ft. 2027 Comment
  CHSC46684  Cordylanthus pilosus subsp. hansenii Vernon H. Oswald 1989-8-12 3933 Butte Wurlitzer Unit, Vina Plains Preserve. On the edge of Pine Creek just downstream from the mouth of Singer Creek. 54 Comment
  CHSC84453  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC3825  Cornus nuttallii R. L. Adams 1964-4-2 73 Butte Highway 32 S. side rd. 1 mi. E. Forest Ranch. 20 yds. from highway. Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 60 Comment
  CHSC106880  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC87230  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville. 61 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  SEINET7072736  Crassula solieri A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  CHSC111390  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC42487  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC376468  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte W side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap 853 Comment
  SEINET10474588  Crepis pleurocarpa Mary Susan Taylor 1982-6-24 Taylor 4722 Butte T22N R4E nw/ne sec 23. Pulga SW quad. W side of Ponderosa Way (Rim Rd) under PG&E lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap, nw of Oroville. 2800 ft. Red rocky soil. 853 Comment
  CHSC114164  Croton setiger Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16789 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  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
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CAS-BOT-BC189239  Cryptantha John Thomas Howell 1967-6-22 42615 Butte Magalia 701 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  SBBG128861  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte entrance to Oroville Wildlife Area, 0.2 mi W of CA-70, near the Feather River 46 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  CHSC29286  Cryptantha intermedia R. A. Schlising 1980-5-4 3579 Butte Along Lunt Road, 1/4 mi n of jct with Hwy 70, north of Hwy 70 crossing Lake Oroville. Comment
  CHSC90816  Cryptantha intermedia Lowell Ahart 2005-5-2 11755 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
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  SEINET10496611  Cuscuta campestris Lowell Ahart 1983-9-19 Ahart 4455 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC48364  Cuscuta howelliana Vernon Oswald 1988-6-7 3356 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Vernal pool along Hwy 99 just n of Dry Creek. 54 Comment
  CHSC88163  Cymopterus terebinthinus var. californicus Lowell Ahart 2004-8-2 11334 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. 1912 Comment
  CHSC3916  Cynoglossum grande Wayne O. Baum 1967-3-24 22 Butte Ca 8 mi. e. of the Skyway and Humbug Rd. intersection, on the s. side of Humbug Rd. 365 Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CAS-BOT-BC114603  Cyperus eragrostis James D. Jokerst 1983-1-17 1687 Butte Table Mountain, W edge of the mesa ca. 75 m N of point where Flag Canyon ends in a waterfall. 396 Comment
  CHSC55608  Cyperus eragrostis L. P. Janeway 1986-9-20 1869 Butte Side creek on northwest side of Little Chico Creek; near River Road ca 2 mi south of Chico River Road. 36 Comment
  CHSC78280  Cyperus eragrostis Lowell Ahart 2000-6-29 8550 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
  SEINET191614  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 miles E of Honcut. 137 Comment
  RSA92299  Cyperus eragrostis F. W. Peirson 1926-6-20 6763 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC45157  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte In an area where gravel is removed, north of the state burrow area, west of Pacific Heights Road, about 5 air miles south-west of Oroville. 36 Comment
  CHSC76012  Cyperus esculentus Lowell Ahart; Vernon H. Oswald 1999-8-13 8141 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
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  SBBG128797  Cyperus iria L. Ahart 2012-10-5 18476 Butte S edge of parking area at the restroom, end of rd to the Larkin Rd Boat Launch Area, ca. 0.25 mi W of Larking Rd, ca. 2 mi (air) SW of the Oroville Airport 28 Comment
  CHSC28662  Cyperus niger J. D. Jokerst 1979-10-12 376 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  UC203670  Cyperus niger A. A. Heller 1914-7-20 11581 Butte 8 mi. n. Oroville Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  CHSC56608  Cyperus squarrosus L. P. Janeway; R. A. Schlising 1988-7-16 3036 Butte Vernal pool next to Humbug Summit Road ca 0.8 mi west of Butte Creek House. 1805 Comment
  CHSC76852  Cyperus squarrosus L. P. Janeway 1999-6-26 6489 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 29 Comment
  RSA754525  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  UCD141152  Cyperus strigosus L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CDA38893  Cyperus strigosus L. Ahart 2000-8-23 8661 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CDA13306  Cystopteris fragilis G. F. Hrusa, T. D. Wilfred 1996-7-9 13152 Butte Sierra Nevada; on E side of bridge over Marble Creek on USFS N60. Comment
  CHSC24869  Cystopteris fragilis E. Rilla 1976-4-4 20 Butte Scattered on s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  UC600566  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte gulch draining into Butte Creek meadows Jonesville 1800 Comment
  JEPS32213  Damasonium californicum W. L. Jepson 1934-5-4 16607 Butte 1 12/ mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek 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
  JEPS117179  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  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
  NY41067  Darmera peltata S. Bianco 1995-9-17 1027 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  SEINET10483090  Darmera peltata Mary Susan Taylor 1980-3-19 Taylor 2387 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC51278  Datura stramonium var. stramonium Lowell Ahart 1990-9-30 6611 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC8566  Delphinium hansenii A. A. Heller 1922-5-28 13625 Butte Along Chico Creek near Salt Spring, upper end of Bidwell Park Comment
  CHSC1446  Delphinium hesperium H. Holder 1949-5-18 Butte Bidwell Park. 91 Comment
  CAS-BOT-BC10104  Delphinium hesperium subsp. pallescens C. C., Mrs. Bruce 1897-4-1 1917 Butte unspecified Comment
  CAS-BOT-BC10106  Delphinium hesperium subsp. pallescens Mrs. H. C. Cantelow 1940-5-10 4255 Butte 8.5 mi. SW of Oroville along Hwy. 24 Comment
  JEPS115838  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 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
  CHSC52502  Delphinium variegatum Tom R. Norton 1977-4-24 22 Butte Ca. 9.4 mi nw of Chico, 1.8 mi e of Hwy. 99, 10 yds e of Cana-Pine Creek Rd. Field. 60 Comment
  CHSC52503  Delphinium variegatum V. F. Pappas 1975-4-26 19 Butte 8.5 mi s of Chico on Highway 99E at Oroville Junction. 59 Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. Comment
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  CAS-BOT-BC82874  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte On Highway #24 near the junction of the Yankee Hill road. Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CAS-BOT-BC82881  Dendromecon rigida Benton Howard; C. R. Quick 1948-5-25 48 -01 Butte Along logging road, about half way between Stirling City and West Branch (of Feather River) bridge. 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
  SEINET12091622  Dendromecon rigida Unknown 1981-1 12 Butte ca 200 m W of Butte Creek and 1.2 km N of Magalia Reservoir, 2.5 km N. of Magalia 735 Comment
  CHSC64255  Deschampsia cespitosa S. C. Morey 1983-8-2 675 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CAS-BOT-BC201747  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  CHSC61655  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte Along Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  UC1126524  Dicentra formosa P. L. Johannsen 1936-6-17 931 Butte 0.5 mi s Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1341 Comment
  SEINET12091623  Dicentra formosa G. W. Cox 1972-1 10 Butte Found beside Centerville Rd., about 5 mi NE of Centerville Comment
  UC120092  Dicentra formosa D. Cleveland 1882-7-14 Butte Sutton House Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC402382  Dicentra formosa subsp. formosa A. A. Heller 1913-6-7 10831 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC52184  Dicentra formosa subsp. formosa L. P. Janeway 1989-5-17 3254 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. 792 Comment
  POM148827  Dicentra formosa subsp. formosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, 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
  CHSC118579  Dichelostemma capitatum subsp. capitatum Nancy Groshong 2017-4-30 1 Butte Magalia Serpentine. Just west of Coutelenc Road and Skyway, south side of Coutelenc Road. 701 Comment
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  SEINET10533900  Dichelostemma congestum A. Arthur Heller 1914-4-13 Heller 11287 Butte Chico-Oroville road 11 miles from Chico. Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CHSC38768  Dichelostemma multiflorum Vernon Oswald 1983-5-18 346 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  CAS-BOT-BC501084  Dichelostemma multiflorum A. A. Heller 1902-5-8 s.n. Butte Berry Canyon near Clear Creek Comment
  RSA339162  Dichelostemma multiflorum Margaret J. Williams, Wayne Roderick 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise 168 Comment
  RSA489569  Dichelostemma multiflorum James L. Reveal 1988-6-3 7003 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  SEINET10533976  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E so sec 25. N side of Humburg Rd., ca 1/4 mile upstream from Honey Run Covered Bridge, ca 7 miles e of Chico. Foothill Woodland; 400 ft. With Tritelia laxa, Daucus pusillus, Allium. 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
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CHSC44383  Dichondra donelliana Lowell Ahart 1988-6-7 6035 Butte On the Henry Smith Ranch, about 1/4 mile west of the Oroville Bangor Highway, about 1/2 mile north-west of Bangor. 213 Comment
  CHSC109790  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  CDA38791  Digitaria sanguinalis L. Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC94764  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UCD170261  Diospyros virginiana var. virginiana D. O. Burge 2016-10-22 2184 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CAS-BOT-BC153761  Diplacus angustatus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  CAS-BOT-BC151925  Diplacus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico 304 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 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
  SEINET14453096  Diplacus longiflorus Richard J. Shaw 1982-1 3043 Butte Highway 70, Feather River Canyon, 1/2 mile east of Pulga Dam; ca. 2000 ft. Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC1776  Diplacus torreyi 1932-5-20 Butte Along roadside at Kimshew Falls bridge, near Stirling. 1005 Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  SBBG121273  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte Hwy 99, ca. 100 yds N of Badger Crk Rd, 300 yds S of Richvale East Rd, 7 mi W of Oroville 34 Comment
  SBBG128655  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte parking area on W side of the Midway, W of intersection of Midway and E Park Avenue, Chico 60 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  UC22402  Dodecatheon clevelandii subsp. patulum Carl Purdy 1898-2-23 Butte Chico Comment
  CHSC12185  Dodecatheon hendersonii Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10449649  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor 1981-3-16 Taylor 3405 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  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
  HSC32573  Downingia bella David Johnson 1974-4-20 26 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  CHSC26816  Downingia bicornuta M. S. Taylor 1978-5-7 1602 Butte In Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  SEINET10972620  Downingia bicornuta Mary Susan Taylor 1978-5-7 Taylor 1602 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC398683  Downingia bicornuta var. bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi n Chico Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  CHSC33684  Downingia insignis L. Ahart 1981-5-16 2809 Butte Near rd on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  RSA517015  Downingia ornatissima Barbara Ertter, L. Ahart 1986-4-13 5893 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  RSA767797  Draba verna L. Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC34537  Draba verna var. aestivalis R. E. Preston 1982-2-21 177 Butte N facing slope of small side branch of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 243 Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC38457  Draperia systyla Vernon Oswald 1983-6-7 638 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 600 ft e of the footbridge at the golf course. 91 Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  RSA129731  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 1/2 mile south of Barnum Mill. Chico Quadrangle. 1372 Comment
  UC426910  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UCD170794  Drosera rotundifolia Barry Rice 2017-9-4 BR- 170901 Butte Butte Creek. 1500 Comment
  JEPS107858  Drymocallis glandulosa var. glandulosa Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 430 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CHSC92383  Dryopteris arguta Lowell Ahart 2005-11-12 12481 Butte Bank of a wash, about 90 yards northeast of the large parking area by the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road. 327 Comment
  JEPS122333  Dryopteris arguta Lowell Ahart 2014-8-24 19721 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  RSA739622  Dryopteris arguta L. P. Janeway 2008-6-22 9419 Butte Cascade Range Foothills, upper Bidwell Park, Chico (a large generally natural area) just below jct of Pine Trail and Guardians Trail 396 Comment
  CAS-BOT-BC70860  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge 792 Comment
  CHSC97739  Dysphania ambrosioides Lowell Ahart 2007-11-3 14565 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
  JEPS120610  Dysphania pumilio Lowell Ahart 2013-11-13 19233 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
  JEPS124352  Dysphania pumilio Lowell Ahart 2015-10-26 20595 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC56899  Echinochloa colona J. D. Jokerst 1980-11-11 Butte Along irrigation ditch adjacent to Goodspeed-Watt Road, 0.1 mi north of junction with Nelson Road. Comment
  SEINET4568109  Echinochloa crus-galli var. zelayensis P. Kennedy 1920-7-13 3094 Butte Chico Comment
  SEINET3928822  Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station.; 0 Comment
  CHSC31454  Echinodorus berteroi L. Ahart 1980-11-9 2692 Butte On the sides of the water hole on the Peter Ahart Ranch, ca. 1.5 mi n and 2 mi e of Honcut. 50 Comment
  CHSC113219  Elatine Lowell Ahart 2014-4-26 19411 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  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
  RSA0118699  Elatine californica Lowell A. Ahart 2014-4-30 19420 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1.75 miles (air) southwest of Honcut. 24 Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC80523  Elatine heterandra Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  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
  SEINET10447970  Elatine rubella Mary Susan Taylor 1982-4-28 Taylor 4356 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
  CHSC11931  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC68422  Eleocharis acicularis L. P. Janeway; R. A. Schlising 1988-7-1 2921 Butte Edges of Summit Lake, on the northwest flank of Snow Mountain. 1889 Comment
  CHSC68423  Eleocharis acicularis var. occidentalis L. P. Janeway; R. A. Schlising 1988-7-16 3026 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  JEPS104924  Eleocharis decumbens Dean W. Taylor 1995-8-6 15395 Butte 5 air mi NE of Stirling City, meadow 0.5 mi E of Bald Mountain summit 1706 Comment
  CHSC76853  Eleocharis engelmannii L. P. Janeway 1999-6-26 6488 Butte Sacramento Valley. Sandy deposits along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 28 Comment
  CHSC78184  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC30504  Eleocharis quinqueflora J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-7 550 Butte 1.0 mi E of Palermo-Honcut Hwy, 50 m S of Melody Lane. 48 Comment
  JEPS115253  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  CHSC38815  Eleusine indica Vernon Oswald 1983-8-19 1015 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 300 ft upstream from the flood-control gates. Near a streamlet. 79 Comment
  CHSC101296  Elymus caput-medusae Lowell Ahart 2009-4-17 15551 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
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS106202  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CAS-BOT-BC234105  Elymus multisetus John Thomas Howell 1955-6-14 30456 Butte Magalia 731 Comment
  CAS-BOT-BC234107  Elymus multisetus John Thomas Howell 1955-6-15 30512 Butte West Branch of North Fork of Feather River 182 Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  UCSB34810  Elymus multisetus Reisentz, Paul 1979-5-13 Butte State Highway 70; 9 miles south of Butte-Plumas County line Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  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
  UC873160  Epilobium campestre Lewis S. Rose 1937-6-11 37382 Butte 7 mi w Honcut 22 Comment
  CAS-BOT-BC166843  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 289 Comment
  CHSC64120  Epilobium canum subsp. latifolium B. Castro 1987-9-12 221 Butte Ca 100 ft up from N edge of Butte Ck ca 0.6 mi S of the Ponderosa Way bridge, ca 0.5 mi S on Butte Creek Trail, by N edge of trail. 609 Comment
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  CHSC32107  Epilobium ciliatum subsp. ciliatum L. Ahart 1976-6-27 1146 Butte Along North Honcut Creek; near Honcut. 45 Comment
  CHSC75969  Epilobium ciliatum subsp. ciliatum Lowell Ahart; Vernon H. Oswald 1999-8-13 8171 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC31183  Epilobium densiflorum M. S. Taylor 1978-7-18 1687 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC34715  Epilobium minutum M. S. Taylor 1981-5-21 3773 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
  CHSC70341  Epilobium minutum R. A. Schlising 1980-6-10 3676 Butte Along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo; Carpenter Ridge. 1356 Comment
  RSA169435  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET6644443 Image available Epilobium obcordatum E. B. Copeland 1931-1 664 Butte Jonesville; "the Summit" 2000 Comment
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SBBG28789  Equisetum hyemale E. B. Copeland 1929-7-6 Butte Jonesville Comment
  RSA331946  Equisetum hyemale var. affine Dave Kelly, Walter Wisura 1985-8-1 4089 Butte 8.1 mi NE of Lomo (Hwy 32) along Humboldt Road to Jonesville. Comment
  CAS-BOT-BC204458  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  SEINET10836138  Eragrostis cilianensis Lowell Ahart 1984-10-5 Ahart 4813 Butte On dry red gravelly soil in the open pasture fields; the area has a high water table; Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland. 50 Comment
  CHSC75984  Eragrostis mexicana subsp. virescens Lowell Ahart; Vernon H. Oswald 1999-8-13 8179 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC38820  Eragrostis pectinacea var. pectinacea Vernon Oswald 1983-6-18 710 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CAS-BOT-BC278507  Eragrostis pilosa Lowell Ahart 1981-9-19 3188 Butte Cresta Power House 550 Comment
  UCD98088  Eremogone aculeata Lowell Ahart 1980-5-29 2362 Butte just a little ways east of the Oroville Quincy Highway, about 2.5 miles northeast of Mountain House. 1005 Comment
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Jul 8 2014
  CHSC101490  Eremogone cliftonii Samantha Mackey Hillaire 2008-6-10 1253 Butte Lassen National Forest. Powerline survey, approx. 1.4 air miles east of Flea Mountain to southern end of occurrence. Accessed from roads 24N13, 24N13A, 23N14Y, 23N22Y. Found plants on ridges between 636057.190602654, 4414774.7153736 in the north to 633268,739075563, 4410021.81676031 in the south. Elevation 3200-4292 feet. 989 Comment
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC11844  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville. 1550 Comment
  UC600730  Ericameria nauseosa var. speciosa H. F. Copeland 1920-8-24 381 Butte Jonesville, near the big summit Comment
  JEPS120946  Erigeron annuus Lowell Ahart 2013-4-20 18554 Butte West side of Wilson Creek, SW of the dredge pond, about 1/4 mile SW of the barn, about 1/4 mile W of Honcut Cemetery, about 3 air miles NE of Honcut. Comment
  CHSC113979  Erigeron canadensis Lowell Ahart 2014-11-17 19910 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville 1935 Comment
  CDA13237  Erigeron inornatus var. inornatus G. F. Hrusa, T. D. Wilfred 1996-7-8 13084 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  CDA42882  Erigeron philadelphicus var. philadelphicus L. Ahart 2012-5-25 18114 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CDA32128  Eriochloa acuminata var. acuminata L. Ahart 2004-8-3 11397 Butte On the south side of O Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CAS-BOT-BC216046  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  CHSC101302  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
  UC176355  Eriogonum luteolum var. luteolum A. A. Heller 1913-9-16 11142 Butte hills near Big Chico creek (e of Chico) Comment
  SEINET5043171  Eriogonum marifolium Unknown 1930-7-12 410 Butte Above Jonesville Comment
  NY323384  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville 2000 Comment
  UC426902 Image available Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte above Jonesville; ; above Jonesville, Butte Co. 2000 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CAS-BOT-BC269852  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  CHSC42028  Eriogonum nudum var. pubiflorum Lowell Ahart 1986-8-15 5391 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  RSA4637  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. 1500 Comment
  CHSC51009  Eriogonum roseum Lowell Ahart 1990-8-15 6591 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC42490  Eriogonum ursinum var. ursinum Lowell Ahart 1987-5-27 5717 Butte Road cut along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 365 Comment
  CHSC34019  Eriogonum vimineum L. Ahart 1981-7-18 2941 Butte On dry gravelly sandy soil in the burrow area ca. 4.5 mi sw of Oroville. Plant is scattered along the dirt rd near the base of the levee. 35 Comment
  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
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS97598  Eriophyllum lanatum var. croceum R. D. Stone and W. B. Davilla 1984-5-16 605 Butte 2 mi west of Stirling City (0.2 mi S of confluence of Little West Fork and Cunningham ravine); Little West Fork of West Branch Feather River 929 Comment
  CAS-BOT-BC308162  Eriophyllum lanatum var. grandiflorum Frank W. Peirson 1926-6-21 6766 Butte 10 miles east of Chico on the Humboldt Road Comment
  CHSC33404  Eriophyllum lanatum var. grandiflorum R. E. Preston 1981-7-8 25 Butte Scott's John Creek, at Butte-Plumas County border, ca. 5.5 km ne of Jonesville. 1930 Comment
  SFV3891  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 92 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC1118260  Eriophyllum lanatum var. grandiflorum J. E. Sowder 1933-6-6 80 Butte 0.5 mi nw of Nelson's Bar; Chico Quadrangle 457 Comment
  SEINET8526725  Erodium botrys R. 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 Comment
  JEPS115234  Erodium brachycarpum Lowell Ahart, John Dittes 2009-3-20 15509 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
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC42910  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  UCD127596  Eryngium castrense B. F. Smith 1969-4-15 93 Butte 2 miles south of Oroville. 74 Comment
  CHSC29395  Erythranthe bicolor R. A. Schlising; S. Azevedo 1980-6-13 3697 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC33342  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, ca. 2.5 mi e of Lower Jct of Zink and Bald Rock Rd, 0.5 mi from the road. 975 Comment
  CHSC25056  Erythranthe geniculata G. N. Steger 1972-4-15 Butte Located at base of Coal Creek Falls, Coal Canyon, North Table Mt., 4 mi n of Cherokee Rd. and 1 1/2 mi nw from Cherokee Rd. 304 Comment
  CHSC45736  Erythranthe glaucescens Joseph Lennen 1988-4-15 5 Butte North Table Mtn., Cherokee Rd. ca. 6 mi. n of Oroville. 243 Comment
  CHSC78169  Erythranthe glaucescens Lowell Ahart 2000-5-31 8428 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  OBI9414  Erythranthe glaucescens Robert F. Hoover 1968-5-29 137 Butte Cohasset Rd. Comment
  CHSC110630  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. 115 Comment
  CHSC84397  Erythranthe guttata Lowell Ahart 2003-7-23 10438 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  SEINET8255133  Erythranthe guttata A. A. Heller 1917-7-26 12813 Butte Butte Meadows. 1280 Comment
  CHSC44676  Erythranthe nasuta R. Banchero 1980-4-19 119 Butte Ca 0.7 mi directly NE of Feather Falls, ca 1.4 mi due N of the town of Feather Falls. 944 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC13514  Erythranthe pulsiferae N. E. Long 1974-5-1 Butte Scarce alongside dirt road, ca. 300 yards off Cohasset Highway and ca. 12 mi n of Chico. 274 Comment
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  CHSC32640  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3462 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC33565  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia. 853 Comment
  CHSC78106  Erythronium multiscapideum Caleb E. Casey 1999-4-27 Butte Paradise Lake. 777 Comment
  CHSC88631  Erythronium multiscapideum Linnea Hanson 1983-4-6 177 Butte Plumas National Forest. 762 Comment
  JEPS96566  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town 731 Comment
  HSC23466  Erythronium multiscapideum J. L. Wilson 1970-2-27 207 Butte Canyon side NE of Paradise, 0.65 mi. E of intersection of the steep gravel rd. and Coutolenc Rd. on the gravel rd., intersection 0.15 mi. NE of intersection of Coutolenc Rd. and skyway 579 Comment
  SEINET12048537  Erythronium multiscapideum Unknown 1984-1 11 Butte ca 1.8 mi S of Concow Res. & 100 yds W of Concow Rd 457 Comment
  SEINET10899973  Erythronium purpurascens Austin AUSTIN s.n. Butte Butte or Plumas County Comment
  CHSC27786  Eschscholzia caespitosa Rene T. Retuta 1978-4-4 2 Butte .50 miles se of Cherokee Rd., ca. 5 miles n of Oroville, North Table Mountain. 396 Comment
  POM125695  Eschscholzia caespitosa subsp. caespitosa C. C. Bruce 1898-05 2019 Butte Doe mill Comment
  CAS-BOT-BC402967  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC38579  Eschscholzia lobbii Vernon Oswald 1983-2-16 83 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 304 Comment
  CHSC236  Euonymus occidentalis V. Holt; M. Underhill 1952-7-7 Butte Magalia. 670 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 Comment
  RSA126022  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  UCD142599  Euphorbia maculata G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 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
  SEINET10453781  Euphorbia serpillifolia Lowell Ahart 1990-9-30 Ahart 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  RSA0106562  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horeshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CAS-BOT-BC312199  Eurybia radulina Lowell Ahart 1985-8-15 5166 Butte About 2 miles south-west of Forbestown about 2 miles north-east of Robinson Mill Road 762 Comment
  JEPS108974  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 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
  CHSC45377  Fallopia convolvulus Vernon Oswald 1987-8-9 3194 Butte Hwy 32, ca. 0.2 mi s of Lomo. 1170 Comment
  SEINET10454411  Fatsia japonica Mary Susan Taylor Taylor 450 Butte Campus of the California State University, Chico. 61 Comment
  SEINET10506964  Festuca Mary Susan Taylor 1978-5-6 Taylor 1585 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC49545  Festuca arundinacea Vernon Oswald 1985-5-13 1756 Butte Upper Bidwell Park, Chico, on the s perimeter of the Police Pistol Range. 91 Comment
  CHSC112786  Festuca myuros Lowell Ahart 2013-5-18 18701 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC74162  Festuca occidentalis B. Castro 1996-8-7 707 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on S-facing slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  CHSC74163  Festuca occidentalis B. Castro; E. Hubert 1996-7-18 682 Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on S side of USFS Rd 22N31 and just E of Rd 22N34Y. In clearcut area on either side of tributary to Bidwell Creek. 865 Comment
  CHSC41291  Festuca rubra S. C. Morey 1983-7-21 498 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD80548  Festuca subuliflora CNPS SN Foothill Team 2006-6-6 Survey Butte BLM, Parcel NE of Paradise. 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
  RSA755423  Filago gallica L. Ahart 2009-5-30 15809 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  SEINET13711401  Fimbristylis autumnalis Lowell William Ahart, Lowell William Ahart 1999-1 8145 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CHSC2276  Fritillaria affinis N. Maxwell 1929-3-2 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC29100  Fritillaria eastwoodiae M. S. Taylor; J. D. Jokerst 1980-4-18 2502 Butte Ca. 1 mi S of Nimshew, ca. 2 ft E of Nimshew Rd. 609 Comment
  CHSC33570  Fritillaria eastwoodiae M. S. Taylor 1981-4-27 3559 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink, ca. 2 mi sw of Brush Creek. 1005 Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  SEINET10469520  Fritillaria lanceolata Mary Susan Taylor 1975-3-3 Taylor 403 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CAS-BOT-BC124016  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte near Durham Comment
  CHSC76969  Fritillaria recurva Margie Collins 1894-5-1 Butte Forest Ranch. Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  POM193331  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  SEINET10968826  Galium bolanderi Mary Susan Taylor 1981-5-5 Taylor 3611 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  NY131444  Galium grayanum var. grayanum A. A. Heller 1914-8-7 11668 Butte Summit east of Jonesville. 2133.6 Comment
  CHSC109594  Galium murale Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18104 Butte Along the west side of the horse trail, north of Table 25, north of Cedar Grove, Lower Bidwell Park, Chico. 71 Comment
  JEPS107282  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley 28 Comment
  JEPS117282  Galium murale Lowell Ahart 2010-6-1 16764 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 115 Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  SEINET10500741  Galium porrigens var. tenue Mary Susan Taylor 1980-5-27 Taylor 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET10500640  Galium tricornutum Lowell Ahart 1991-5-8 Ahart 6649 Butte Along a small wash, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  CHSC38660  Galium triflorum Vernon Oswald 1983-6-13 673 Butte Upper Bidwell Park, Chico, at the retaining wall along Chico Creek at the E end of Centennial Ave. 85 Comment
  CHSC69045  Garrya fremontii Lowell Ahart 1997-8-1 7759 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. 1432 Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of Guardian Trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  POM183175  Garrya fremontii H. F. Copeland 1930-7-26 1338 Butte Neighborhood of Jonesville, by Government Trail. 1677 Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CAS-BOT-BC56292  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Just above Lewis Creek Ridge Road at crossing with Lewis Creek, N.W. of Sly Creek Reservoir Comment
  JEPS121984  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2014-7-7 19561 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC25423  Gayophytum heterozygum Hayes; Warner 1977-9-11 60 Butte Along shoulder, Hwy 32, ca. 2 m s of road, exactly 24.6 mi e of Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  CHSC31182  Gayophytum humile M. S. Taylor 1978-7-18 1716 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CAS-BOT-BC208055  Genista monspessulana John Thomas Howell 1962-6-16 37574 Butte Magalia 731 Comment
  CAS-BOT-BC208057  Genista monspessulana John Thomas Howell 1959-9-20 34676 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  RSA638255  Genista monspessulana Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8109 Butte Table Mountain; along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  RSA4133  Gentianella amarella E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CHSC43043  Gentianopsis simplex L. P. Janeway 1987-7-5 2447 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. Meadow. 1798 Comment
  UC600682  Gentianopsis simplex H. F. Copeland 1924-8-12 Butte Jonesville Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  SEINET10495121  Geranium dissectum Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4285 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CAS-BOT-BC263236  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  CHSC42772  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of the creek. 1097 Comment
  SEINET10496734  Gilia capillaris Mary Susan Taylor 1978-7-19 Taylor 1768 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  UC726809  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte just e Jarboe Pass (along the Feather River Highway, 22 mi from Oroville) Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  SJSU11648  Gilia capitata subsp. pedemontana L. J. Ericksen 1955-4-17 115 Butte Humbug Rd NE of Chico Comment
  SEINET10969154  Gilia capitata subsp. pedemontana Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4748 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
  CHSC24736  Gilia tricolor L. Casto 1976-4-28 18 Butte 50 yd s of Skyway, ca. 4 mi e of intersection of Hwy 99 and Skyway. 182 Comment
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  CHSC24975  Gilia tricolor subsp. tricolor J. Cox 1976-3-10 44 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
Read comments
Jan 19 2011
  SEINET12350112  Gilia tricolor subsp. tricolor Unknown 1998-4-11 7 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  CAS-BOT-BC266484  Githopsis diffusa Lowell Ahart 1987-5-12 5651 Butte S of Lumpkin Ridge Road, 1.5 miles NE of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC185  Githopsis pulchella subsp. campestris M. Roberson 1956-4-9 Butte Near Paradise along Skyway. 548 Comment
  UC764582  Githopsis pulchella subsp. campestris R. F. Hoover 1937-5-18 2236 Butte 3 mi n Chico Comment
  SEINET10840481  Githopsis pulchella subsp. campestris Edwards EDWARDS s.n. Butte Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC59047  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte Near a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  SEINET10473777  Gnaphalium chilense Mary Susan Taylor 1978-9-9 Taylor 1924 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CHSC116285  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  POM39097  Gnaphalium palustre C. C. Bruce 1897-06 2110 Butte Little Chico Comment
  SEINET10547550  Gratiola Mary Susan Taylor 1975-4-18 Taylor 484 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC112904  Gratiola ebracteata B. Castro; Robin Carter 2011-4-29 1876 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  SEINET267158  Grindelia camporum var. camporum T. A. Ranker, P. G. Trapp 1994-6-17 1625 Butte Pence Road south of Paradise. 395 Comment
  SEINET10724142  Grindelia hirsutula Melvin L. Conrad 1973-6-5 Conrad 7025 Butte 2.6 miles west of Paradise on Chico Road. 610 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
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  CHSC97790  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC306540  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC86083  Helianthus bolanderi R. D. Fischer 2003-12-7 24 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. Found 150 ft. north of Salmon Hole. 231 Comment
  UC179529  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte 6 mi from Chico Chico (on the Chico Hamilton road, in low fields) Comment
  JEPS115261  Heliotropium europaeum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  JEPS128617  Heliotropium europaeum Lowell Ahart 2017-8-8 21656 Butte Park, west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  JEPS119737  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  CHSC44283  Hesperolinon micranthum Vernon Oswald; Bruce Baldwin 1988-6-16 3387 Butte Upper Bidwell Park, Chico, on the slope just s of the Police Pistol Range. 106 Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC113394  Heterocodon rariflorum Lowell Ahart 2014-7-2 19547 Butte Depression on south side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CAS-BOT-BC143634  Heteromeles arbutifolia Mrs. E. C. Sutliffe 1924-12-1 s.n. Butte Isaiah 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
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  CHSC1634  Heuchera micrantha var. erubescens V. Holt 1935-5-5 Butte Feather River Canyon, near Pulga. Comment
  CAS-BOT-BC312343  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC27941  Hieracium albiflorum M. S. Taylor 1978-7-18 1677 Butte On w side of Hwy 32 on edge of forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC38055  Hirschfeldia incana R. E. Preston 1983-5-26 385 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 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
  JEPS114985  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville 305 Comment
  CAS-BOT-BC280715  Holcus lanatus Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  HSC92444  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 12 mi. SW of Gridley 30 Comment
  JEPS117266  Hordeum marinum subsp. gussoneanum Lowell Ahart 2010-5-14 16644 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
  CHSC31385  Hordeum murinum subsp. leporinum J. D. Jokerst 1979-4-13 1193 Butte Top of North Table Mt., ca 200 meters N of the intersection of Cherokee Rd and the E edge of the mountain. 396 Comment
  CHSC82710  Hordeum murinum subsp. leporinum Tara Morgan 2002-4-23 47 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CAS-BOT-BC143976  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  UCD113566  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte Yellow Pine Forest in openings on edge of Little Bald Rock near creek, ca. 3 mi S of Brush Creek. 1016 Comment
  CHSC96790  Horkelia tridentata subsp. tridentata Lowell Ahart 2007-5-22 13904 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC60978  Hosackia oblongifolia Lowell Ahart 1993-6-26 7009 Butte On the north side of the dirt road, about 1/4 mile west of Lost Creek Reservoir. Meadow. 1036 Comment
  CAS-BOT-BC175965  Hypericum Lowell Ahart 1977-10-15 s.n. Butte Peter Ahart Ranch, Honcut. Along edge of North Honcut Creek 50 Comment
  CAS-BOT-BC400829  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  UC774522  Hypericum concinnum Carl B. Wolf 1941-7-23 11052 Butte 6.6 mi. w. De Sabla (on rd. to Forest Ranch); Northern Sierra Nevada 762 Comment
  SD3077  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  UC204399  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte hills ca. 5 mi. e. Oroville (also between Red Bluff & Redding, and in Sacramento canyon some miles below Delta <in> Shasta Co.) Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC312928  Hypochaeris glabra Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC67203  Idahoa scapigera James D. Jokerst 1992-4-14 3346 Butte Stone Ridge Ranch. E of Cohasset Hwy. and Chico Municipal Airport, S of barn on ridge top. 91 Comment
  CHSC38771  Ipheion uniflorum Vernon Oswald; Kingsley Stern 1983-3-7 129 Butte Upper Bidwell Park, Chico, at Police Pistol Range. 97 Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  SEINET12056851  Iris douglasiana L. A. Tillotson 1890-1 s.n. Butte Chico 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
  CHSC31179  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-4 1982 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Road with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC26795  Iris macrosiphon M. S. Taylor 1978-5-6 1577 Butte Magalia. 609 Comment
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  CHSC44462  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  JEPS106158  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS127195  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  SEINET3441891  Isolepis cernua Unknown 2000-5-10 8334 Butte Oroville, Oroville, about 12 air miles southeast, about 1.75 miles north and 1.25 miles east of Honcut, Peter Ahart Ranch, about 100 yards south of a deep wash, just east of a dirt road 30 Comment
  CHSC45588  Isolepis setacea M. S. Taylor 1981-5-6 3622 Butte W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. 1127 Comment
  RSA755422  Juglans californica var. hindsii L. Ahart 2009-8-3 16252 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC49602  Juncus acuminatus Vernon Oswald 1985-5-20 1774 Butte Along Thermalito Afterbay near Hwy 162 ca. 1 mi e of Hwy 99. 35 Comment
  CHSC49603  Juncus acuminatus Vernon Oswald 1987-5-18 2906 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  JEPS98524  Juncus acuminatus Lowell Ahart 2000-5-13 8341 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  JEPS113865  Juncus brachyphyllus Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32368  Juncus bufonius var. bufonius J. D. Jokerst 1980-6-14 831 Butte Big Bald Rock, N of Lake Oroville and E of Berry Cr. 914 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC6115  Juncus bufonius var. bufonius A. R. Jaegel 1968-4-19 152 Butte 1 mi s of Cherokee on Cherokee Rd. Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC55454  Juncus capitatus L. P. Janeway 1991-4-12 3893 Butte 1 1/4 mi east of Palermo-Honcut Road, ca 3 mi north of Honcut. 45 Comment
  CDA31987  Juncus effusus subsp. pacificus L. 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. Comment
  CHSC28663  Juncus effusus subsp. pacificus J. D. Jokerst 1979-10-5 362 Butte At base of waterfall on Bear Ranch Cr., ca. 1/4 mi. S.E. of Hwy 70. 548 Comment
  RSA0113968  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 mile west of the Ponderosa Dam. 258 Comment
  RSA725034  Juncus effusus subsp. pacificus L. Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 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
  CHSC34176  Juncus ensifolius L. Ahart 1981-9-15 3157 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  POM219442  Juncus ensifolius H. F. Copeland 1928-8-18 414 Butte Neighborhood of Jonesville. 1524 Comment
  RSA742781  Juncus ensifolius L. Ahart 2008-7-23 15142 Butte 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
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Feb 2 2010
  UC1562429  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte about 0.12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  CHSC30359  Juncus hemiendytus var. hemiendytus J. D. Jokerst; R. A. Schlising 1980-6-16 841 Butte Near Butte Meadows, 0.1 mile south of the jct of Humboldt Rd and Skyway. 1341 Comment
  CHSC47565  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte On the bottom of vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC110141  Juncus leiospermus var. leiospermus Lowell Ahart 1984-4-6 4543 Butte About 0.5 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC93492  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 368 Comment
  CHSC93493  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 339 Comment
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north 346 Comment
  RSA755196  Juncus patens L. Ahart 2009-5-30 15779 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  CHSC105532  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC97206  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  RSA726656  Juncus usitatus L. Ahart 2007-7-5 14249 Butte 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air southwest of Gridley. 25 Comment
  CHSC37066  Juncus xiphioides L. Ahart 1982-9-29 3838 Butte Along banks and edges of small stream, along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  SEINET10531628  Juniperus californica Lowell Ahart 1983-4-10 Ahart 3922 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC237826  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 7/10 mi. NW. of Magalia at NW. side of Magalia Reservoir 731 Comment
  POM161683  Kelloggia galioides E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10968831  Kelloggia galioides Mary Susan Taylor 1977-8-17 Taylor 1484 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  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
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 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
  HSC97347  Kickxia elatine J. P. Smith, J. O. Sawyer 2007-9-2 12420 Butte Parking lot at observation platform at the Llano Seco Unit of the Upper Butte Basin Wildlife Area along Seven Mile Rd. Comment
  JEPS97428  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  CHSC25446  Kyhosia bolanderi Marc Hayes; Warner 1977-9-11 77 Butte Ca. 150 m n of Humboldt Road between Butte Meadows and Jonesville, exactly 8.4 mi from the junction with Hwy 32. 1219 Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC179501  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte meadows Butte 1219 Comment
  CDA38797  Lactuca saligna L. Ahart 2012-10-28 18518 Butte About 30 yards east of the restrooms and the bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC66663  Lactuca saligna Vernon H. Oswald; Lowell Ahart 1996-7-22 8080 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Field on the W side of the levee at the SW corner of Tract 6, Sanctuary 1. 30 Comment
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  CHSC36397  Lagophylla glandulosa J. Boze 1982-5-8 445 Butte Near shooting range and Horseshoe Lake in Upper Bidwell Park. Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  HSC38107  Lagophylla glandulosa Thomas W. Nelson, Jane P. Nelson 1976-5-9 2448 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC100986  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC48484  Lamium amplexicaule Vernon Oswald 1984-2-27 1085 Butte Upper Bidweel Park, Chico, in the 'new day camp' area to Hooker Oak Recreation Area. 79 Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CHSC20057  Lasthenia fremontii M. S. Taylor 1975-4-18 485 Butte Around vernal pool, ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of Keefer-Lassen Rd, ca. 5 mi n of Chico. Comment
  CAS-BOT-BC354122  Lasthenia fremontii Ahart Lowell 1979-5-11 s.n. Butte Wheat field, Valley Grassland. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET11804892  Lasthenia fremontii R. T. Retuta 1978-1 20 Butte ca 5 ft E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico 62 Comment
  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
  UCR227351  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  SEINET10871171  Lathyrus Mary Susan Taylor 1981-5-22 Taylor 3800 Butte T23N R5E sw/se sec 29, Pulga quad. Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3300 ft. 1006 Comment
  JEPS103577  Lathyrus angulatus Lowell Ahart 2002-5-7 9621 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
  CHSC74087  Lathyrus brownii L. Gehrung; E. Hubert 1996-7-17 Butte Ca 2 air mi NNW of town of Brush Creek, on Mosquito Ridge, on N side of USFS Rd 22N96X. In large clearcut area on SW side of tributary to Ram Creek. 792 Comment
  CHSC116512  Lathyrus jepsonii var. californicus B. Castro; Josh Brown, Melinda Carlson 2008-4-25 1732 Butte Sacramento Valley. E bank of Sacramento River, ca 0.2 mi N (upstream) of Gianelli Bridge at Hamilton City, just up from water's edge. 39 Comment
  CHSC858  Lathyrus latifolius E. Walker 1932-6-23 Butte Magalia Creek marshes. 731 Comment
  UCD106383  Lathyrus nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  POM29224  Lathyrus nevadensis subsp. nevadensis C. C. Bruce 1897-05 2082 Butte Forest- Ranch. 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
  CDA13877  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1997-5-7 13735 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CAS-BOT-BC321758  Layia fremontii Richard R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca 8 miles NW of Chico. 40 Comment
  CAS-BOT-BC321780  Layia fremontii Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC90592  Layia fremontii Jose Romero 1983-4-20 14 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi s.w. of Oroville. 45 Comment
  SEINET11804893  Layia fremontii E. D. Duncan 1976-1 18 Butte ca 100 yd SE of Wildwood Ave., 0.4 mi from intersection of Wildwood & Manzanita Ave, Chico 290 Comment
  SEINET7042711  Layia fremontii A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  JEPS117544  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  CHSC20877  Lepechinia calycina Robert A. Schlising 1963-6-7 2613 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CAS-BOT-BC89877  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  UCD115784  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table mountain. Collected near Santa Barbara. Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 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 Chico. 407 Comment
  CAS-BOT-BC12800  Lepidium perfoliatum Lowell Ahart 1981-4-6 2742 Butte A little west of the Gray Lodge Headuarters, ca. 8 miles southwest of Gridley. 35 Comment
  CHSC45097  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Around parking area at checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC48337  Lepidium pinnatifidum Vernon Oswald 1983-6-28 784 Butte Graylodge Waterfowl Management Area near Parking Lot 16. On roadways in the refuge. Comment
  JEPS115285  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC69464  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte On the west side of Highway 70, just north of Rich Gulch Road, about 1 1/2 miles north of the bridge across the West Branch of Lake Oroville. 396 Comment
  JEPS103330  Leptochloa fascicularis Lowell Ahart 2002-9-7 9929 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CDA32440  Leptochloa fascicularis G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4366 Butte On levees of the Rice Experiment Station, 3 mile north of Biggs on Highway 162 0 Comment
  CAS-BOT-BC273952  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  UC600666  Leptodactylon pungens E. B. Copeland July, 1930 Butte above Jonesville (on rocky ridge); above Jonesville 2000 Comment
  CHSC1277  Leptosiphon bicolor P. Delaplane 1965-3-23 77 Butte H. Wurlitzer Ranch ca. 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC2379  Leptosiphon ciliatus R. Carter 1965-4-12 179 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., 30 yds. due E of garage growing along foot path. 274 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC29386  Leptosiphon filipes R. A. Schlising 1980-6-24 3777 Butte Along Hwy 70 in canyon of North Fork, Feather River, 0.2 mi N of Cresta Powerhouse. At roadside. 457 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC86859  Leptosiphon parviflorus L. P. Janeway; John Hunt 2003-5-21 7790 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CAS-BOT-BC341795  Lessingia nemaclada R. F. Hoover 1965-10-16 9720 Butte Deer Creek Road east of Chico Comment
  CHSC98889  Lessingia nemaclada L. P. Janeway 2007-10-8 9216 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; near North Rim Trail along ridge overlooking Salmon Hole. 351 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  SEINET11793728  Lessingia nemaclada Unknown 1975-1 978 Butte along edge of Ponderosa Way, about 2 air mi SW of Feather Falls, about 2 mi S of Lumpkin Rd 396 Comment
  CDA8197  Lessingia nemaclada var. mendocina T. C. Fuller 1958-7-7 1913 Butte 1 mile north of Pulga Station. 0 Comment
  POM195743  Leucophysalis nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC38072  Lewisia nevadensis R. E. Preston 1982-7-1 324 Butte At margin of meadow; ca. 1 mi S of Humbug Summit. 1950 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
  CHSC46217  Lilium pardalinum subsp. shastense Pauleen Broyles 1986-8-5 981 Butte Ca. 0.6 km n of road jct below Humboldt Peak. Along Scotts John Creek. 1860 Comment
  CHSC46243  Lilium pardalinum subsp. shastense Pauleen Broyles 1986-8-5 992 Butte Near Scotts John Creek, ca 2 km n of the road jct below Humboldt Peak. 1860 Comment
  UC1334270  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer and Ira L. Wiggins 1940-7-6 10 Butte about 0.5 mi w Chaparral 1554 Comment
  CAS-BOT-BC133041  Lilium washingtonianum subsp. washingtonianum M. S. Taylor; J. D. Jokerst; L. Ahart 1980-8-2 3211 Butte Humboldt Peak, s end of peak, and w side off the trail 2154 Comment
  HSC93611  Limnanthes alba subsp. versicolor James D. Jokerst, R. S. Schlising 1982-5-19 1576 Butte NE of Camp 18 on Lumpkin Ridge Rd. 1280 Comment
  JEPS104458  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  UCD18739  Limnanthes douglasii subsp. rosea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 32 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  UC1428057 Image available Limnanthes floccosa subsp. californica M. T. Kalin 1970-3-29 7014 Butte on Hwy 99E 0.5 mi s junction with Shippe Road; ; Butte Co. Comment
  UCD116434  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  CHSC32586  Limosella acaulis L. Ahart 1980-5-11 2242 Butte On the w side of Pentz-Magalia Hwy, ca. 1/2 mi sw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  CHSC46298  Limosella acaulis Vernon Oswald 1989-5-30 3790 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. 54 Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  SEINET9797295 Image available Lipocarpha aristulata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC5969  Liquidambar styraciflua M. MacArthur 1968-6-17 219 Butte Ca. 60 ft. NW of Big Chico Creek by path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  JEPS46149  Listera convallarioides Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CAS-BOT-BC36588  Lithocarpus densiflorus var. echinoides A. A. Heller 1913-6-7 10798 Butte Near Stirling 1074 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 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 andRoad 19N19. 701 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
  CAS-BOT-BC123099  Lithophragma bolanderi Joseph William Blankinship 1893-1-1 s.n. Butte Marysville Comment
  CDA11952  Lithophragma parviflorum G. F. Hrusa, J. Hart 1989-4-15 5918 Butte Sierra Nevada; Coal Canyon, North Table Mountain, approx. 1/4 mi below waterfall. Comment
  CHSC96642  Lithophragma parviflorum var. trifoliatum Lowell Ahart 2007-3-28 13602 Butte By Jurassic-Triassic metavolcanic rocks, Peter Ahart Ranch, about 2 1/4 miles north and 2 1/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CHSC27667  Lithospermum californicum Mike O'Bryan; Robert A. Schlising 1978-4-17 3219 Butte N of Forest Ranch, on ridge above Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CHSC26786  Logfia gallica M. S. Taylor 1978-5-6 1623 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  CHSC46333  Logfia gallica Lowell Ahart 1989-5-10 6226 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CHSC46952  Logfia gallica Lowell Ahart 1978-5-15 1719 Butte Field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46953  Logfia gallica Lowell Ahart 1975-6-20 799 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC35657  Lolium multiflorum R. E. Preston 1982-4-22 245 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC90644  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
  JEPS75439  Lolium multiflorum W. L. Jepson 1934-5-4 16606 Butte 1 1/2 mi s Nord (swales of Pine Creek, near Sacramento River); near Sacramento River, Pine Creek Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  JEPS117707  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte 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 172 Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS108840  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 391 Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  CHSC28971  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; M. S. Taylor 1980-11-24 453 Butte On top of rimrock which creates the waterfall ca 0.5 mi E of Richardson Springs. Comment
  CHSC3151  Lomatium dasycarpum subsp. tomentosum Dona Kingsford 1966-4-23 Butte Location: 2.3 miles SW of Hooker Oak Tree, Chico. Comment
  POM132576  Lomatium dasycarpum subsp. tomentosum A. A. Heller, H. E. Brown 1902-5-14 5552 Butte Berry Canyon (near Clear Creek) Comment
  UC1532356  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  CDA13871  Lomatium macrocarpum G. F. Hrusa, T. D. Wilfred 1997-5-7 13729 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC32748  Lomatium macrocarpum M. S. Taylor 1981-4-14 3536 Butte Serpentine ridge between landing site and Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 1/10 mi n of its jct with Concow Rd, ca. 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 1066 Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  SEINET10840943  Lomatium tomentosum Mary Susan Taylor 1980-3-30 Taylor 2412 Butte Upper Bidwell Park, Chico. 244 Comment
  CHSC83905  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  SEINET10454535  Lomatium utriculatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3477 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  CHSC54522  Lonicera cauriana Vernon H. Oswald; Lowell Ahart 1991-8-11 4823 Butte Marshy meadow located on the southeast side of Humbug Rd, ca. 0.5 mile northeast of the northeast end of Snag Lake. 1767 Comment
  RSA4160  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville. 1550 Comment
  CAS-BOT-BC240686  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CHSC51218  Lonicera involucrata var. involucrata L. P. Janeway 1987-6-19 2245 Butte Strawberry Valley Cr at crossing of Barton Hill Rd 2.4 mi from Travis Saddle and the Challenge-LaPorte Rd. 1051 Comment
  CHSC109073  Lonicera japonica Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte On the north side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 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
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  SEINET10451997  Lotus nevadensis Mary Susan Taylor 1981-5-15 Taylor 3748 Butte T22N R5E nw/ne sec 28, Berry Creek quad. Edge of landing at short spur off Chino Ridge Rd (22N28), near Last Chance Creek, ca. 4 air mi due E of Jarbo Gap on Feather River Hwy 70. Granitic soils; 2800 ft. 853 Comment
  SEINET10940036  Lotus oblongifolius Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1395 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. 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
  CHSC112874  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC112877  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC61053  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1993-7-29 5739 Butte Chico Landing (site) boat ramp, Bidwell River State Park, along the Sacramento River W of Chico. In slough and leading up to the ramp. 38 Comment
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  SEINET194894  Lupinus acutilobus A. A. Heller 1938-4-23 15050 Butte Between the Las Plumas road and the summit on Highway 24, 20 miles east of Oroville. 762 Comment
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC60980  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  SEINET10870942  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22n,r4e,sec.1 se 1/4 se 1/4. Pulga quad. On serpentine on rocky ridge, both Side of ponderosa way (rim road), 6.1 miles n of jarbo gap on hwy 70. With Pteridium aquilinum, calocedrus decurrens 823 Comment
  CAS-BOT-BC201363  Lupinus albifrons var. albifrons Carl B. Wolf 1933-5-23 4903 Butte W. slope Sierra Nevada. 4 3/10 mi. No. of San Andreas on road to Mokelumne Hill 365 Comment
  POM196154  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  CHSC36098  Lupinus apertus R. A. Schlising; K. Tarp, D. Burk 1982-6-16 4298 Butte E part of county, 0.7 mi S of Plumas County line on Oroville-Quincy Hwy. Comment
  UC1129534  Lupinus arbustus P. L. Johannsen 1936-7-21 953 Butte 1/2 mi e Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET10871233  Lupinus bicolor subsp. pipersmithii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4291 Butte T19n, r4e, border of sec 1 and 2. Oroville quad. Along both sides of oroville dam blvd, ca 1.5 mi s of oroville dam visitors center, oroville. Foothill woodland. Assoc: heterotheca grandiflora, plagiobothrys tenella. 244 Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC78077  Lupinus microcarpus var. densiflorus Caleb E. Casey 1999-5-13 Butte Bear Hole, Upper Bidwell Park. Found on South side of Chico creek. 121 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  UCD108996  Lupinus nanus A. A. Heller 1915-5-25 11890 Butte on the Forbestown road 15 miles east of Oroville. 457 Comment
  CHSC940  Lupinus nanus var. apricus E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CAS-BOT-BC322113  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  JEPS115828  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC92538  Lupinus pachylobus L. P. Janeway 2005-3-10 8347 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC113397  Lupinus polyphyllus var. burkei Lowell Ahart 2014-7-2 19536 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC52705  Luzula cascadensis L. P. Janeway 1987-6-13 2207 Butte Along Dogwood Creek; road to Mayaro 2.4 mi E of Concow Road. 990 Comment
  CAS-BOT-BC441414  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi. E of a spur road from the Concow Road, which is 1.0 mi. SW of Jones Meadow 1798 Comment
  CHSC115290  Luzula macrantha Lowell Ahart 2015-4-27 20085 Butte On both sides of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC110451  Luzula subsessilis L. P. Janeway 2013-5-20 11113 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  SEINET10816702  Luzula subsessilis Peter F. Zika 2010-5-14 Zika 24805 Butte NW slope of Mt. Pisgah, SE of Eugene. 275 Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  OBI48938  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi E of Honcut 46 Comment
  CHSC84017  Lythrum portula Lowell Ahart 2003-6-23 10301 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CDA5125  Lythrum salicaria L. Ahart 2000-7-18 8598 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC42367  Lythrum tribracteatum Lowell Ahart 1987-5-10 5608 Butte In idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC34946  Maclura pomifera R. Schlising 1981-11-28 4221 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along 99 and across from Thermalito Afterbay. Comment
  CHSC103979  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC37261  Madia exigua L. Ahart 1982-6-15 3561 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC334651  Madia glomerata H. M. Hall 1914-7-22 9774 Butte Jonesville Comment
  CAS-BOT-BC343278  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  CHSC26704  Madia gracilis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  SEINET10872066  Madia rammii Lowell Ahart 1985-5-6 Ahart 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC345239  Madia subspicata Lewis S. Rose 1945-5-12 45018 Butte Richardson Springs 304 Comment
  SEINET4173697 Image available Madronella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CAS-BOT-BC512736  Maianthemum stellatum H. F. Copeland 1929-6-12 1255 Butte Jonesville, in woods on banks of Jones Creek 1524 Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  CAS-BOT-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  CAS-BOT-BC347377  Malacothrix floccifera C. R. Quick 1947-8-3 47 -73 Butte Kimshaw Burn, burned ridgetop just Se of river, near Stirling City, in or near Lassen N. F. Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC481093  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Butte Comment
  JEPS87782  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte about 7 mi n Oroville (garden area at ne corner of Oregon City School, Oregon City); Oregon City 365 Comment
  CHSC108981  Marah fabacea Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte On the north side of the path, near table 17, on the north side of Centennial Avenue. Lower Bidwell Park, Chico. 80 Comment
  CHSC573  Marah fabacea var. agrestis S. Ptomey 1929-4-1 Butte Bidwell Park. 60 Comment
  CHSC52032  Marrubium vulgare B. Castro 1988-4-21 259 Butte At edge of Chico Cyn Rd just past hairpin turn where road turns away from Big Chico Ck and passes pistachio orchard at base of ridge. Naturalized fairly frequently along this strip on both sides of Big Chico Ck. on the e side of Chico. 91 Comment
  UC205070  Marsilea vestita subsp. vestita A. A. Heller 1914-7-31 11633 Butte ca. 6 mi nw Chico; Sacramento valley Comment
  CDA42742  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC348085  Matricaria discoidea M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET10476233  Meconella californica Mary Susan Taylor 1974-3-19 Taylor 84 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET12155168  Medicago hispida P. L. Ricker 1912-1 3965 Butte Chico Comment
  UC1609456  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte on s side of Butte City Hwy e Southern Pacific Railroad (w of Riceton Rd, about 3 1/4 mi nw of Biggs); Rice Experiment Station 30 Comment
  CHSC46157  Medicago polymorpha Lowell Ahart 1976-4-11 1055 Butte In open grassy fields, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC74090  Medicago polymorpha B. Castro 1998-5-11 790 Butte Ca 2.5 air mi E of the Oro-Quincy Hwy, at Milsap Bar, on the W side of Milsap Bar Road's bridge over the Middle Fork Feather River. 498 Comment
  UCD107844  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  JEPS107779  Medicago praecox Lowell Ahart 2005-5-2 11779 -A 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
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CHSC34811  Medicago sativa M. S. Taylor 1981-5-11 3688 A Butte N side of Hwy 70, at jct with Pulga rd and Pulga bridge. 487 Comment
  CHSC3341  Melaleuca nodosa Robert L. Smith 1966-3-1 33 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  UC398887  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC269375  Melica californica Lowell Ahart 1985-5-15 4974 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
  CHSC42439  Melica californica Lowell Ahart 1987-5-9 5582 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC56830  Melica californica J. D. Prouty 1980-4-17 80 .68 Butte Woodland off of Yankee Hill Road. 518 Comment
  CHSC31939  Melica fugax J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1044 Butte Top of Humboldt Peak, ca. 400 met NE of the summit along the edge of a hogback, northernmost portion of Butte County. 2133 Comment
  CAS-BOT-BC281301  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, ca 0.25 mile W of Milsap Bar, ca 25 miles NE of Oroville 500 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC42520  Melica harfordii Lowell Ahart 1987-5-22 5676 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC73895  Melica harfordii B. Castro 1997-6-13 739 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
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC99646  Melica torreyana H. Koeth 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). 471 Comment
  CHSC36549  Melilotus albus L. Ahart 1982-7-10 3670 Butte On bottm of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38519  Melilotus albus Vernon Oswald 1983-6-18 711 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 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
  CHSC102616  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte Along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SBBG127999  Mentha arvensis L. Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC42789  Mentha canadensis L. P. Janeway; Patty Costello 1987-9-5 2574 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC757  Mentha canadensis V. Holt; M. Underhill 1952-7-9 Butte 56 Comment
  CHSC86082  Mentha spicata R. D. Fischer 2004-1-4 45 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. In drainage ditch next to Upper Park Road 300 ft. west of Salmon Hole. 243 Comment
  CHSC102979  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico. 68 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and 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
  UC480657  Mertensia ciliata H. F. Copeland 1930-7-27 Butte beside So. Willow creek Jonesville 1828 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CAS-BOT-BC429201  Micranthes oregana H. F. Copeland 1920-8-12 131 Butte Jonesville 1219 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  CHSC31595  Micropus californicus var. californicus L. Ahart 1972-5-6 97 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33366  Micropus californicus var. californicus Steven Azevedo 1980-4-16 18 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC3894  Micropus californicus var. californicus L. E. Dunkel 1965-6-4 16 Butte At top of hill ca. 1/2 mi. n of Richardson Springs entrance gate on Cohasset Rd. 45 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC348694  Microseris acuminata K. L. Chambers 1952-5-17 411 Butte 9.4 mi. s. of Forest Ranch P. O. on Hwy. 32 from Chico to Lake Almanor, west rim of Little Chico Creek Canyon Comment
  CHSC40487  Microseris lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  SEINET10474315  Microseris lindleyi Lowell Ahart 1985-4-24 Ahart 4883 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10496809  Microsteris gracilis Mary Susan Taylor 1973-1 Taylor 60 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  UCR190687  Mimulus 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
  RSA435494  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25677 Butte route 24 Stony bank, red clay, along Featerh Rvier above Oroville, 10-12 mi. above 183 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  JEPS5567  Mimulus glaucescens H. A. Dutton 1921-1 Butte near Hooker Oak; Chico Comment
  SEINET12326993  Mimulus glaucescens Unknown 1984-1 3 Butte ca 6 mi NE of Wildwood AVe, SE side of road, 0.25 mi NE on trail 84 Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 Comment
  JEPS80614  Mimulus guttatus M. S. Taylor 1980-4-27 2552 Butte ca. 1 mi s Nimshew (0.5 mi e of Nimshew Rd., on n side of Ponderosa Way Rd.) 609 Comment
  RSA795601  Mimulus guttatus Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km northeast of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  LA38958  Mimulus guttatus Frank W. Peirson; 1926-6-21 6775 Butte Butte Meadows, Humbolt Road Comment
  UCD122636  Mimulus guttatus L. Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  POM183038  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  UC103727  Mimulus latidens Mrs. R. M. Austin 1890-1 164 Butte Little Chico Creek Comment
  JEPS86980  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi e Zinc road (s jct) (along Bald Rock Road) 750 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  SEINET10929276  Mimulus pilosus Lowell Ahart 1984-8-19 Ahart 4780 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC93973  Mimulus pulsiferae R. D. Fischer 2004-6-20 752 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  SEINET12326992  Mimulus tricolor Unknown 1984-1 16 Butte Oroville, flat area 10 yd S of Cottonwood Rd, 1.8 mi E of its junction with Hwy 99 46 Comment
  POM285522  Minuartia californica Lyman Benson 1935-3-27 6359 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  SEINET11930246  Minuartia douglasii Unknown 1978-1 39 Butte Ca 150 ft W of Cherokee Rd, ca 5.5 mi N of Oroville, ca 6.5 mi S oh highway 70 on Cherokee Rd 518 Comment
  SEINET13711198  Moenchia erecta Lowell William Ahart, Lowell William Ahart 2000-1 8332 Butte 10 Air Mi. NE of Oroville at Oak Grove Cemetery (T19N, R5E, sec 23, Ctr.) 1800 Ft. 549 Comment
  CHSC116321  Mollugo verticillata Lowell Ahart 2015-10-26 20593 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
  JEPS122251  Mollugo verticillata Lowell Ahart 2014-9-23 19870 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
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  SFV3186  Monardella glauca M. L. Vincent 1960-9-7 100 Butte Sierra Nevada Old Stage Road near Stearn Road, 3 miles south of Paradise. 530 Comment
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  UC2035806  Monardella odoratissima subsp. glauca H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  CHSC43017  Monardella sheltonii L. P. Janeway 1987-6-8 2178 A Butte 5.7 mi south of Big Bar Mtn (via rd). 792 Comment
  RSA32830  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte 23 miles from Oroville, east of Jarboe Pass, on the Feather River Highway. Comment
  CAS-BOT-BC220308  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of unnamed canyon SE of Neal Road 79 Comment
  CHSC93989  Montia chamissoi R. D. Fischer 2004-6-20 779 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On the east side of Chico Meadows, at meadow edge. 1371 Comment
  CHSC101088  Montia fontana subsp. amporitana Lowell Ahart; John Dittes 2009-3-20 15513 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 Chico. 407 Comment
  CHSC45101  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  CHSC88641  Montia parvifolia Linnea Hanson 1996-5-15 363 Butte Plumas National Forest. Brush Creek Fire Station. 1066 Comment
  UC1586595  Montia parvifolia Vernon H. Oswald and Lowell Ahart 1991-6-5 4652 Butte 1.5 air mi nw of Platte Mountain Lookout (dirt road to Minnie-Ha-Ha Mine on Big Chico Creek, on w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 792 Comment
  CHSC45332  Morus alba Vernon Oswald 1987-4-9 2319 Butte Bidwell River State Park between the Washout (Chico Landing Site) and Big Chico Creek. 38 Comment
  RSA585114  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 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
  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
  CHSC46343  Myosotis discolor Lowell Ahart 1989-5-28 6274 Butte Along a small stream, south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC83263  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC88162  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  RSA754858  Nassella pulchra L. Ahart 2009-4-26 15617 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  SFV1503  Nasturtium officinale M. L. Vincent 1962-4-18 210 Butte Butte Creek Canyon near Humbug Road. 1 mile east of old covered bridge. Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  UCD48390  Navarretia divaricata H. F. Copeland 1930-7-28 s.n. Butte Jonesville, Butte County. Beside South Willow Creek in shady flat. 1828 Comment
  CHSC116224  Navarretia divaricata subsp. divaricata Lowell Ahart 2015-6-16 20237 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC94244  Navarretia divaricata subsp. divaricata Lowell Ahart 2006-7-16 13002 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  CHSC44414  Navarretia filicaulis Lowell Ahart 1988-7-3 6119 Butte At the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CHSC52106  Navarretia filicaulis L. P. Janeway 1988-6-25 2887 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC89480  Navarretia filicaulis Jenny Marr 1994-7-6 211 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  HSC85999  Navarretia leucocephala J. Hunter 1986-3-30 40 Butte 1 km E of Chico, 50 m S Hwy. 32 75 Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC91111  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  RSA13527  Navarretia viscidula H. F. Copeland 1932-6-24 s.n. Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road Comment
  CHSC40403  Nemacladus capillaris Lowell Ahart 1985-6-17 5059 Butte Near a small seep, 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  SEINET3450874  Nemacladus interior Unknown 2003-7-10 10371 Butte Ponderosa Dam, Ponderosa Dam, about 1.5 air miles east, both sides of the dirt road to the power generator, north side of Ponderosa Reservoir 490 Comment
  UC196272  Nemophila heterophylla A. A. Heller 1914-5-8 11376 Butte plateau above Clear Creek (on the Paradise Road); above Clear Creek Comment
  RSA3796  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Along Chico Creek about six miles east of Chico. Comment
  CHSC62466  Nemophila maculata B. Castro; L. Janeway 1991-4-19 442 Butte Ca 10 air mi NE of Oroville, 0.75 mi NW of Oregon Gultch, 0.5 mi S of Montgomery Bar Ravine. 353 Comment
  JEPS115237  Nemophila pedunculata Lowell Ahart, John Dittes 2009-3-20 15499 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
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  JEPS117257  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 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
  SEINET12265276  Odontostomum hartwegii J. H. Morris 1932-1 s.n. Butte Durham Comment
  CHSC25436  Oreostemma alpigenum var. andersonii Marc Hayes; Warner 1977-9-11 71 Butte Ca. 10 m N of Humboldt Rd., exactly 6.9 mi from the turn to Butte Meadows along Hwy 32. 1219 Comment
  SBBG28970  Orthilia secunda E. B. Copeland 1930-8-7 Butte Jonesville 1500 Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  POM173667  Orthocarpus erianthus H. F. Copeland 1928-4-3 996 Butte Foothills. Comment
  SEINET12332663  Orthocarpus erianthus S. S. Khan 1988-1 42 Butte North Table Mountain, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  RSA325140  Orthocarpus lacerus M. S. Taylor, Vernon H. Oswald 1984-4-4 5393 Butte S side of Humbug road, 2 miles SW of Nimshew, 12 air miles NE of Chico. Comment
  SEINET12332662  Orthocarpus purpurascens Unknown 1988-1 9 Butte North Table Mtn., Cherokee Rd ca 6 mi N of Oroville 244 Comment
  RSA0060803  Oxalis pes-caprae Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC98571  Packera eurycephala var. lewisrosei L. P. Janeway; B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  JEPS34386  Packera eurycephala var. lewisrosei Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8862 Butte 0.75 mi s Pulga (above side road off U.S. Hwy 40, in canyon of the N Fk Feather River, at n base of grade over Jarbo Gap, and just before bridge across Feather River); North Fork of Feather River, Jarbo Gap 426 Comment
  RSA724880  Panicum acuminatum var. acuminatum L. Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 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
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 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
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC84032  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  CHSC102410  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
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 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
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CAS-BOT-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC42059  Paxistima myrsinites Lowell Ahart 1986-10-16 5402 Butte On the east side of the road, about 1 mile south-west of the Forbestown Diversion Dam, about 4 miles north-east of Forbestown. 548 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  RSA718089  Pedicularis attollens L. Ahart 2006-7-16 12979 Butte West edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  CHSC38248  Pellaea andromedifolia Vernon Oswald 1982-7-23 33 Butte Bidwell Park, Chico, on the s side of Upper Park Rd. 4.4 mi e of its junction with Wildwood Ave. (at Parking area R). 231 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CAS-BOT-BC67558  Pellaea mucronata M. S. Taylor 1979-3-20 1954 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
  SEINET3166410  Pellaea mucronata P. J. Alexander 2009-5-27 1048 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  RSA780097  Penstemon breviflorus subsp. glabrisepalus C. C. Bruce 1898-06 2414 Butte [No location information provided.] Comment
  NY591792  Penstemon deustus var. pedicellatus A. A. Heller 1915-6-16 12023 Butte Summit of the Sierra Nevada above Jonesville 2133.6 Comment
  NY609844  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville 1600 Comment
  SD4575  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville, open damp stony ground 1950 Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  CHSC62138  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-23 4398 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  UC726288  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 mi from Oroville; embankment on Feather Highway Comment
  CAS-BOT-BC77080  Pentagramma triangularis subsp. triangularis John Thomas Howell 1959-9-26 35091 Butte Sierra Nevada - Pulga Bridge, N. Fk. Feather River 411 Comment
  JEPS113226  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  CHSC40216  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1985-6-17 5061 Butte 100 yds south of the dirt raod, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC40227  Perideridia howellii Vernon Oswald 1985-7-15 1903 Butte Concow Meadow located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC28862  Perideridia oregana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 465 Butte Top of Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  CHSC66674  Persicaria hydropiperoides Vernon H. Oswald; Lowell Ahart 1996-7-22 8082 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I. 30 Comment
  CHSC1345  Persicaria lapathifolia V. Holt 1940-7-16 Butte W. Sacramento Ave., Chico. 54 Comment
  CHSC94487  Persicaria maculosa Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CAS-BOT-BC523829  Persicaria pensylvanica Lowell Ahart 1986-11-14 5457 Butte 0.1 mi south of the clay burrow for Oroville Dam, 0.25 mi E of Larkin Rd, about 6 mi SW of Oroville 36 Comment
  HSC103921  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Lower Bidwell Park, Chico; gravel bar in the middle of Big Chico Creek, ~30 yds. E of the Freeway 66 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  SEINET5726582 Image available Petrorhagia dubia Gary L. Carlin 1971-1 28 Butte Honey Run Road crossing of Butte Creek, 3.7 miles east of Chico.; Chico 122 Comment
  UCSB63949  Petrorhagia dubia Snodgrass, G. 1981-4-11 Butte Ca. 5 mi. E of Chico; ca. 1/2 miles E of Rockwood Lake entrance on Humbug Rd. (now Honeyrun Rd.) Comment
  JEPS117223  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville Comment
  RSA769601  Phacelia egena L. Ahart 2009-4-22 15580 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
  RSA133567  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-27 344 Butte Along Feather River highway about 16 miles northeast of Oroville. Comment
  SEINET10497012  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4251 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  CHSC39103  Phacelia mutabilis R. A. Schlising; K. Tarp 1983-8-12 4435 Butte N part of county, W of Philbrook Reservoir, on road to Philbrook Res. near the West Branch of the Feather River. Comment
  UC600782  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville Comment
  CHSC46242  Phacelia procera Pauleen Broyles 1987-7-26 1086 Butte Ca. 7.5 km ese (air) of Jonesville (where Humboldt Road crosses Jones Creek). In meadow near Willow Creek where Humbug Summit Road crosses. 1890 Comment
  CHSC46565  Phacelia procera V. Oswald; L. Ahart 1989-7-12 3851 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. 1926 Comment
  UC392196  Phacelia procera E. B. Copeland 1929-7-29 Butte above Jonesville (by creek); Butte Creek 1700 Comment
  CHSC58919  Phacelia racemosa Lowell Ahart 1992-7-29 6891 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC65996  Phalaris lemmonii Vernon H. Oswald 1996-4-20 7400 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. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  UC820504  Phalaris minor Lewis S. Rose 1937-6-11 37384 Butte 7 mi w Honcut 22 Comment
  SEINET10949139  Phalaris paradoxa Lewis S. Rose 1937-6-11 Rose 37381 Butte 7 mi W of Honcut. Open fields 23 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  RSA0057776  Philadelphus lewisii Edward Palmer 1892-6-7 s.n. Butte Near Chico. Comment
  CHSC1304  Phlox speciosa subsp. occidentalis R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  CHSC113291  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-5-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 23 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  UC1143157  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  CHSC45343  Phytolacca americana Vernon Oswald 1983-7-6 804 Butte Beside Calif. Hwy. 32 in Forest Ranch. 719 Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC42140  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Along the sides of Kunkle Creek, about 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 548 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC50635  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  LA6139  Pinus contorta subsp. murrayana E. B. Copeland; 1929-7-15 334 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  UC600582  Pinus contorta subsp. murrayana H. F. Copeland 1931-6-9 Butte Jonesville 1524 Comment
  CAS-BOT-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  RSA572044  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  UC398881  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville 2000 Comment
  POM127000  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows. 1280 Comment
  POM282051  Pinus sabiniana Mrs. R. M. Austin 1890-1 s.n. Butte Sierra foothills. Comment
  CDA13231  Piperia transversa G. F. Hrusa, T. D. Wilfred 1996-7-8 13078 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CAS-BOT-BC254404  Piptatherum miliaceum Lowell Ahart 1981-9-26 3207 Butte 6 miles W of Chico 40 Comment
  CHSC108965  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17862 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  CHSC27196  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  CHSC28996  Plagiobothrys fulvus var. campestris J. D. Jokerst 1980-3-12 473 Butte NE of Chico. 67 Comment
  CHSC35066  Plagiobothrys fulvus var. campestris R. A. Schlising 1981-4-6 4013 Butte S of Oroville along Hwy 170; S of Baggatt Road, grassland along highway. Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 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
  SD122572  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1984-5-7 4590 Butte 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise. 600 Comment
  UC1303133  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte 4 mi e Chico Comment
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC28985  Plagiobothrys nothofulvus R. A. Schlising 1980-3-23 3523 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  RSA718072  Plagiobothrys scouleri var. hispidulus L. Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CDA40661  Plagiobothrys stipitatus T. C. Fuller 1958-4-15 4794 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC13522  Plagiobothrys stipitatus var. micranthus S. Poe 1974-4-22 9 Butte Ca. 50 yds. s of Fern Bank area, upper Bidwell Park. 73 Comment
  CHSC46774  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-5-4 2176 Butte On the bottom of small vernal pools and along small washes, in a pasture, south-west of the intersection of Nelson Avenue and 20th Street in Thermalito. 60 Comment
  CHSC99476  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte Depression in a small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET516432  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-1 2228 Butte Large size plant, growing on damp to dry gravelly red soil on the bottom of a small wash in a farmed field, Peter Ahart Ranch, about 2 1/2 mi N and 1/2 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC84129  Planodes virginica Lowell Ahart 2003-5-9 10123 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  CHSC42071  Plantago coronopus Jumilah Zakaria 1986-4-15 20 Butte S Hwy 99, ca. 2 mi from jct with Cana Creek Road. 182 Comment
  CHSC45342  Plantago coronopus Vernon Oswald 1985-4-11 1706 Butte Beside a gravel road at the shooting area in the Oroville Wildlife Area. Comment
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC24953  Plantago elongata Ron Stewart 1976-3-24 Butte Ca 40 yds sw of the Broyles Road, -Hwy 99 intersection. 73 Comment
  CHSC38582  Plantago erecta Vernon Oswald 1983-2-23 97 Butte Upper Bidwell Park, Chico, near Yahi Trail ca 700 ft e of the Diversion Dam Parking Area. 134 Comment
  CHSC90827  Plantago erecta Lowell Ahart 2005-5-2 11773 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
  JEPS119615  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 Comment
  SEINET10499810  Plantago lanceolata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4180 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  HSC92461  Plantago major L. Ahart 1981-9-27 3213 Butte 1/8 mi. NE of intersection Lower Wyandotte Rd. and Upper Palermo Rd., 4 mi. NE of Palermo 73 Comment
  CHSC43801  Platanthera sparsiflora Vernon Oswald 1987-6-23 3006 Butte Just w of the Skyway 1.4 mi (odometer) s of Inskip. 1426 Comment
  CHSC10691  Platanus racemosa Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1303143  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte on the road to golf links near Chico (near Sandy Gulch); near Sandy Gulch Comment
  CHSC31899  Plectritis ciliosa L. Ahart 1974-4-11 377 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10872920  Plectritis congesta subsp. brachystemon Mary Susan Taylor 1980-3-1 Taylor 2335 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  UC890146  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  CHSC73945  Pleuricospora fimbriolata B. Castro; L. Gehrung 1998-6-23 795 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, on W side of Oro-Quincy Hwy, on E side of SW-trending ridge overlooking Get-Up-and-Get Creek. 1191 Comment
  CHSC39610  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC6626  Poa annua M. MacArthur 1968-6-13 325 Butte SE yard of Building V, Chico State College campus. 60 Comment
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  SEINET10822489  Poa annua Mary Susan Taylor 1975-4-6 Taylor 431 Butte Chico. NE corner of Arcadian and West 4th Avenue. 52 Comment
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  CAS-BOT-BC255065  Poa compressa Lowell Ahart 1989-5-28 6286 Butte S of Oregon Gulch Road, about 0.5 miles N of the Cementary, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  CAS-BOT-BC255975  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte North Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 3 mi. E of Honcut, Sierra Nevada 50 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC47629  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 1425 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  JEPS117704  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico 320 Comment
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  JEPS113263  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 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
  CHSC14011  Pogogyne douglasii G. Notch 1974-4-23 179 Butte Ca. 4 mi w of Hwy 99 on Broyles Rd. ca 12 mi n of Chico. 76 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  RSA141496  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Field near Nelson Comment
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Feb 6 2012
  CDA36761  Pogogyne ziziphoroides D. B. Joley 1971-4-24 Butte Chico; Morrow Lane, ca. 50 yards east of Pacific Telephone, 5 yards north of road. Comment
  CHSC42234  Pogogyne zizyphoroides Steve Holloway 1986-4-12 12 Butte 100 m w of Cohasset Hwy. 2.5 km n of Chico Municipal Airport. 102 Comment
  CHSC67521  Pogogyne zizyphoroides James D. Jokerst; Chuck Ricard 1993-4-12 3949 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  CHSC109070  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 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
  RSA702979  Polygala cornuta var. cornuta L. P. Janeway, B. Castro 2004-6-13 8134 Butte Northern High Sierra Nevada: Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road, 3.6 air km east of Forbestown; near headwaters of Costa Creek. 829 Comment
  RSA280329  Polygonum alpinum Lyman Benson 1932-7-28 3972 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC116331  Polygonum aviculare Lowell Ahart 2015-10-20 20575 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  POM181761  Polygonum aviculare H. F. Copeland 1923-7-4 559 Butte Nelson Comment
  CAS-BOT-BC109140  Polygonum bidwelliae Lowell Ahart 1984-5-7 4593 Butte About 0.5 mile north and a little east of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC40068  Polygonum bidwelliae Mrs. J. Bidwell 1878-1-1 Butte Chico. Comment
  UC204383  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte near Hog Springs (6 mi e of Chico) Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  UC204384  Polygonum californicum A. A. Heller 1914-9-23 11763 Butte hills 8 mi n Oroville Comment
  JEPS87148  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 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
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 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
  CAS-BOT-BC419895  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  RSA724947  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CHSC103672  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC32151  Polypodium calirhiza L. Ahart 1976-2-19 1013 Butte Near Forbestown. 609 Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  CAS-BOT-BC76865  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  JEPS114961  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
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC38853  Polypogon monspeliensis Vernon Oswald 1983-6-20 722 Butte Upper Bidwell Park, Chico, 0.1 mi w of Parking Area N at Salmon Hole. In a roadside ditch. 152 Comment
  CHSC42449  Polypogon monspeliensis Lowell Ahart 1987-5-27 5698 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
  CHSC45217  Polypogon monspeliensis Lowell Ahart 1977-6-2 1399 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS118208  Polypogon viridis Dean W. Taylor 2004-6-17 19105 Butte Flea Valley (3 air miles NW of Pulga; watershed Flea Valley Creek, tributary North Fork Feather River) 1127 Comment
  CHSC28416  Polystichum imbricans M. S. Taylor 1979-10-5 2232 Butte Se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  POM120956  Polystichum imbricans subsp. curtum C. C. Bruce 1897-05 1865 Butte Forest- Ranch. Comment
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  CHSC4146  Polystichum munitum R. Carter 1966-6-26 463 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  SEINET6409502  Polystichum munitum J. Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks 610 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  SEINET10965417  Populus fremontii Mary Susan Taylor 1974-10-11 Taylor 326 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD100118  Portulaca oleracea Malcolm A. Nobs; S. Galen Smith 1949-6-29 1087 Butte Butte Creek, on road from Biggs to Princeton. 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
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  RSA0034523  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC46884  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-4 3978 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 56 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC34127  Potamogeton natans L. Ahart 1981-9-21 3198 Butte Along French Creek, ca. 100 m w of where the road crosses French Creek, ca. 1 mi w of the Sly Creek Reservoir. In a pond above the swamp. 1300 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC46277  Potamogeton pusillus var. pusillus Vernon Oswald 1989-5-19 3779 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond in an old channel of the Sacramento River. 45 Comment
  CHSC65476  Potamogeton pusillus var. tenuissimus Vernon Oswald 1989-6-8 3800 Butte W side of Hwy 99 in ditch just n of Comanche Creek in s Chico. 64 Comment
  CHSC46588  Potentilla drummondii V. Oswald; L. Ahart 1989-7-12 3855 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC105538  Potentilla flabellifolia Lowell Ahart 2010-9-28 17252 Butte On wet humus, 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
  UCD113841  Potentilla gracilis E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC539450  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC38652  Poterium sanguisorba Vernon Oswald 1983-5-25 550 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Along an abandoned road. 134 Comment
  CHSC63976  Proboscidea louisianica B. Castro 1987-8-6 202 Butte E side of Chico Cyn as it heads NE. 91 Comment
  RSA0013899  Proboscidea louisianica Aaron Liston, S. Meury 1988-5-28 743 -2 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Road, 1/8 mi. E of Highway 99. 55 Comment
  UC204597  Proboscidea louisianica subsp. louisianica W. C. Morgan 1918-9-2 Butte Chico Comment
  CDA6520  Proboscidea lutea E. Remmers 1961-7-5 Butte Oroville; 3350 Oro-Bangor Highway. 0 Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  POM181780  Prunella vulgaris var. lanceolata H. F. Copeland 1927-9-4 464 Butte Jonesville. Comment
  SFV16940  Prunella vulgaris var. lanceolata J. N. Hogue 1980-9-6 83 .5 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC110107  Prunus cerasifera L. P. Janeway 2012-3-6 10789 Butte Sacramento Valley. Oroville; south edge of the Feather River just northeast of Centennial Park. 42 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  JEPS120056  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18071 Butte On the sides of the horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC159928  Prunus emarginata F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  HSC66091  Pseudobahia heermannii M. S. Taylor 1980-4-1 2423 Butte Above Honey Run Covered Bridge and S of Butte Creek, ca. 6 mi. E of Chico 183 Comment
  CHSC31586  Pseudognaphalium luteoalbum L. Ahart 1975-7-19 897 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CAS-BOT-BC357002  Pseudognaphalium luteoalbum Lowell Ahart 1979-12-29 2024 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC357587  Pseudognaphalium stramineum A. A. Heller 1918-9-3 13087 Butte 8 miles north of Oroville Comment
  SEINET10530888  Pseudotsuga menziesii Mary Susan Taylor 1975-2-23 Taylor 388 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CAS-BOT-BC361743  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1983-6-6 4030 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC80514  Psilocarphus oregonus Lowell Ahart 2001-4-27 8734 Butte Just northwest of the bridge across Wyandotte Creek, northof Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  CHSC28822  Psilocarphus tenellus var. tenellus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 414 Butte Top of north Table Mt, ca 1.0 mi nw of Cherokee Rd. Roadsides and vernal pools. 381 Comment
  CHSC38348  Psilocarphus tenellus var. tenellus Vernon Oswald 1983-4-25 379 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Near a jeep trail. 359 Comment
  CHSC109235  Ptelea crenulata Robert Fischer 2012-6-8 1057 Butte Seeds were collected within Upper Bidwell Park, south side, adjacent to the Bloody Pin Trail in the city of Chico. The shrubs were growing on a north-facing mixed chaparral/oak hillside. 414 Comment
  SEINET10530092  Pteridium aquilinum Mary Susan Taylor 1980-4-27 Taylor 2549 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
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  SBBG5360  Pyrola aphylla H. and M. Dearing 1938-6-21 2057 Butte 21 mi NE of Chico Comment
  CAS-BOT-BC462605  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 Butte Lily Pond located ca. 0.6 mi (air) W of Butter Creek House and 0.25 mi S of Humbug Rd., ca 2.75 mi (air) SE of Jonesville 1813 Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  UC5845  Quercus unknown 1890-11-20 Butte Chico Comment
  CHSC109102  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS120491  Quercus X morehus B. Castro 2003-9-10 1461 Butte CA 15 mi NE of Oroville, on the slopes over the West Branch Feather River across from the Lime Saddle area. Just below State Recreation Area boundary. Comment
  UC762329  Quercus berberidifolia R. F. Hoover 1938-8-2 4719 Butte Chico to Paradise road Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC3597  Quercus chrysolepis Gerry Carrauthers 1966-3-6 40 Butte Ca. 3 mi N. of city of Paradise near observation point for gold nugget find. Comment
  UC600520  Quercus chrysolepis H. F. Copeland 1920-7-26 335 Butte Jonesville Comment
  SEINET10477144  Quercus chrysolepis Mary Susan Taylor 1980-5-27 Taylor 2659 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
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CDA35902  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Cherokee Rd & Thompson Flat Rd. 73 Comment
  UCD169287  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8580 Butte Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC102405  Quercus kelloggii Lowell Ahart 2009-6-19 15952 Butte On dry soil, on the north side of Ten Mile House Road, 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. 369 Comment
  CHSC30793  Quercus kelloggii M. S. Taylor 1980-5-27 2657 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC38445  Quercus kelloggii Vernon Oswald 1983-5-23 547 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  RSA754366  Quercus kelloggii L. Ahart 2009-6-3 15812 Butte 150 yards SW of Ten Mile House Road, Upper Bidwell park, about 1/2 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  LA205377  Quercus vacciniifolia A. A. Heller; 1915-6-10 11957 Butte Little Summit 1371 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
  UC1135915  Quercus wislizeni var. frutescens J. E. Sowder 1933-8-4 124 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  JEPS119727  Quercus wislizeni var. wislizeni Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, southwest of parking area, Lower Bidwell Park, Chico. Comment
  CHSC50420  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-6-14 4296 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1898 Comment
  CHSC65427  Ranunculus alismifolius var. hartwegii Vernon Oswald 1984-5-9 1179 Butte Near the covered spring at Chico Meadows ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the largest lake. 1935 Comment
  CHSC23896  Ranunculus arvensis Fred Michaelis 1975-4-22 314 Butte Ca. 0.2 mi e of Hicks Ln., ca. 0.6 mi s of Keefer Rd., ca. 6.5 mi n-nw of Chico, near creek. 76 Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  CHSC3513  Ranunculus canus M. Gregg 1966-2-28 24 Butte In Upper Bidwell park--East of Salmon Hole. Across road. Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CAS-BOT-BC378769  Ranunculus canus var. canus A. A. Heller 1914-4-29 11336 Butte low ground 12 miles north of Chico; moist shaded places near Pine Creek, 8 miles south of Vina Comment
  CHSC101275  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  UC204954  Ranunculus muricatus A. A. Heller 1914-4-17 11306 Butte 8 mi n Oroville Comment
  CHSC52794  Ranunculus occidentalis M. S. Taylor 1979-3-31 1963 Butte Lickey Property, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC41520  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-12 352 Butte N part of county, e of Philbrook Reservoir. 1889 Comment
  CHSC115202  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte Located on the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Themalito Afterbay, about 1 mile southwest of Oroville Airport, about 6 miles (air) southwest of Oroville. Valley Grassland. 42 Comment
  RSA4436  Ranunculus uncinatus var. parviflorus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  SEINET10448302  Raphanus raphanistrum Mary Susan Taylor Taylor 773 Butte Weedy or cultivated plants of Chico. 61 Comment
  CDA35703  Rhamnus californica subsp. californica L. Ahart 2002-6-2 9679 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  CHSC102219  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CDA13888  Rhododendron occidentale G. F. Hrusa, T. D. Wilfred 1997-5-8 13745 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC168023  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte In openings south of Oregon Gulch Road, about 1/2 mile north of the [Cementery] Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CHSC25111  Rhus aromatica D. Russell Droege 1970-4-13 30 Butte At ca. 300 yards from eastern termination of Upper Bidwell Park rd. ca. 200 yds. north of Big Chico Creek, Chico. Comment
  CHSC51845  Rhus aromatica Mike Pahl 1988-4-19 20 Butte 14.3 mi NE of Chico on Cohasset Hwy, 0.3 mi off the rd. 548 Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  CHSC62409  Rhus aromatica B. Castro 1987-5-18 111 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive 457 Comment
  SEINET3913006  Rhynchospora capitellata Vernon Oswald, Lowell Ahart 1990-7-31 4424 Butte Yellow Pine Forest: Flea Valley bordering Concow Road, about 4 miles north of Concow.; 0 1128 Comment
  CAS-BOT-BC111924  Rhynchospora glomerata var. minor Lowell Ahart 1980-7-20 2481 Butte At Little Bald Rock. 1100 Comment
  CHSC11905  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Damp spots in woods near Butte Creek. 1550 Comment
  CHSC3399  Ribes nevadense Alice L. Stoll 1966-4-30 142 Butte In pine forest on roadside bank alongside Highway 32, 37 miles N. of Chico. Comment
  CDA25570  Ribes roezlii T. C. Fuller 1962-7-12 9165 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  RSA719205  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 mile N and 0.5 mile E of Honcut, about 12 miles S of Oroville. 32 Comment
  CHSC38024  Rorippa curvisiliqua var. curvisiliqua R. E. Preston 1982-4-22 244 Butte S bank of Western Canal, 0.8 mi S of Nelson. 35 Comment
  CHSC98978  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2008-5-8 14714 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC94560  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 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
  CHSC12111  Rorippa nasturtium-aquaticum J. M. Pitts 1972-4-16 127 Butte In creek 80 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC103168  Rosa californica Lowell Ahart 2009-11-19 16542 Butte About 30 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. 209 Comment
  SEINET8723569 Image available Rosa californica H. S. Reed July 10 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  CHSC1595  Rosa gymnocarpa E. Silbersack 1931-4-21 Butte De Sabla. 762 Comment
  POM253366  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte Upper end of Lake Snag, 7 miles east of Chaparral 1524 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  SEINET10597110  Rostraria cristata A. Arthur Heller 1902-5-13 Heller 5534 Butte Grade between Clear Creek and Paradise. Comment
  UC1191573  Rotala ramosior Herbert L. Mason, Verne Grant 1946-9-4 13110 Butte 833 Canal, West Gridley Road West Gridley Road; 833 Canal, West Gridley Road Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 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
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  JEPS113170  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  SEINET10483569  Rubus glaucifolius Mary Susan Taylor 1981-5-5 Taylor 3610 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  SEINET10483595  Rubus parviflorus Mary Susan Taylor 1980-5-27 Taylor 2732 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC65434  Rubus pensilvanicus Vernon Oswald 1987-4-15 2329 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi n of Butte Creek Bridge. 65 Comment
  JEPS119753  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, north side of the paved road, Lower Bidwell Park, Chico. Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  CHSC6574  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte Found 1 mi. S Butte-Plumas Co., line along W side Oroville-Quincy Rd., in field. 1371 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC433476  Rumex dentatus Lowell Ahart 1981-5-16 2804 Butte Gray Lodge, 11 miles southwest of Gridley. Gray Lodge Waterfowl Management Area. 35 Comment
  CDA42961  Rumex fueginus L. Ahart 2013-6-18 18804 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. Comment
  UCD149829  Rumex lacustris Harry A. George 1967-7-4 s.n. Butte E. of Cresta Power Station. Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC30067  Rupertia hallii R. A. Schlising 1980-7-25 3917 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC42737  Sagina apetala Lowell Ahart 1987-5-6 5515 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC99010  Sagina apetala Lowell Ahart 2008-5-21 14787 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC28729  Sagina decumbens subsp. occidentalis R. A. Schlising 1979-4-8 3356 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UC935721  Sagittaria sanfordii Herbert L. Mason and Verne Grant 1946-8-8 13001 Butte Butte Sink; West Gridley road one mi w of Gridley - Pennington highway Comment
  UCD138067  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  CAS-BOT-BC107965  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  CAS-BOT-BC104079  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  UC203867  Salix lasiandra subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte headwaters of Chico creek in Chico meadows 1219 Comment
  CHSC99650  Salix lasiolepis H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte), in natural spring. UTM 10 633982E 4365709N. 217 Comment
  JEPS119530  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10538851  Salix lasiolepis Mary Susan Taylor 1975-10-31 Taylor 978 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  SD130407  Salix lemmonii John Thomas Howell 1967-5-9 42240 Butte Canyonside on northwest side of Feather River near Pulga Bridge Comment
  UC446424  Salix ligulifolia E. B. Copeland 1931-6-20 Butte beside Butte Creek Jonesville; , Butte Creek 1500 Comment
  CAS-BOT-BC129486  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CAS-BOT-BC129493  Salix melanopsis Lowell Ahart 1987-5-6 5539 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. 274 Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  CHSC113494  Salix scouleriana Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 mile west of Philbrook Reservoir. 1648 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 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
  CHSC62751  Salvia sonomensis L. P. Janeway; Barbara Castro 1993-5-18 4348 Butte North side of Oroville-Quincy Hwy on north side of Lake Madrone. 603 Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  UC883824  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra 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
  NY43554  Sanguisorba minor subsp. muricata S. Bianco 1995-8-26 1022 Butte SE of Concow Rd & Hoffman Rd intersection, along dirt road (Private land holding) 760 Comment
  CHSC46078  Sanicula bipinnata Lowell Ahart 1989-3-25 6200 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET10873886  Sanicula bipinnata Mary Susan Taylor 1980-3-1 Taylor 2324 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  SEINET10972970  Sanicula bipinnata Mary Susan Taylor 1973-1 Taylor 36 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC39951  Sanicula crassicaulis Lowell Ahart 1984-4-3 4540 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC99561  Sanicula tuberosa L. P. Janeway 2008-6-15 9410 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  JEPS98668  Sanicula tuberosa O. Gomez and P. Vargas 1996-5-27 41 PV96 Butte Feather Falls, ca. 0.5 mi from the parking lot by the trail to the Falls Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  CHSC29015  Scandix pecten-veneris M. S. Taylor; J. D. Jokerst 1980-4-4 2461 Butte On w side of La Porte Rd, ca. 2 mi n of Bangor. 335 Comment
  CHSC39231  Scandix pecten-veneris M. S. Taylor; K. Tharp 1983-3-11 5225 Butte At jct of Bell Ranch Rd and Oroville-Quincy Hwy (162), ca. 1 mi sw of Berry Canyon School, s of Lake Madrone. Ca. 8 air mi ne of Oroville. Comment
  SEINET10454697  Scandix pecten-veneris Lowell Ahart 1985-4-1 Ahart 4875 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
  RSA127022  Schoenoplectus acutus var. occidentalis H. S. Yates 1936-8-14 6122 Butte 10 miles S. of Durham 30 Comment
  CHSC88471  Schoenoplectus mucronatus L. P. Janeway; Gail Kuenster 2004-6-29 8172 Butte Northern Sierra Nevada Foothills. Cove on south side of South Fork Feather River arm of Lake Oroville between Stringtown Mountain and Stringtown Road. 280 Comment
  CHSC78321  Scirpus congdonii Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side 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
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CHSC56808  Scirpus diffusus L. P. Janeway 1987-6-8 2177 Butte 8.3 mi south of Bald Mountain via dirt road. 777 Comment
  NY380581  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  CHSC57211  Scirpus microcarpus L. P. Janeway 1987-6-5 2145 Butte At edge of Peavine Creek, ca 0.1 mi east of its mouth at French Creek. 624 Comment
  CHSC94607  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 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
  SEINET3915176  Scirpus mucronatus M. K. Bellus 1947-8-28 s.n. Butte Afton Road, northwest of Biggs.; 0 Comment
  CHSC38300  Scleranthus annuus subsp. annuus Vernon Oswald 1983-3-16 187 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 97 Comment
  CHSC97369  Scribneria bolanderi Paul Maslin 2006-1-1 40 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC793  Scutellaria californica 1929-5-19 Butte 5 mi. above Concow on road to Flea Valley (near Stirling). 609 Comment
  POM70087  Scutellaria californica C. C. Bruce 1897-05 1825 Butte Little Chico. Comment
  CHSC31903  Scutellaria siphocampyloides L. Ahart 1977-5-20 1387 Butte Peter Ahart Ranch, Honcut. On banks of North Honcut Creek. 50 Comment
  CHSC44282  Scutellaria siphocampyloides Vernon H. Oswald; Lowell Ahart 1988-6-17 3390 Butte East of Forbestown Rd. at the e end of Black Bart Rd. 743 Comment
  POM70078  Scutellaria siphocampyloides C. C. Bruce 1897-04 1835 Butte Butte Creek. Comment
  CHSC94028  Scutellaria tuberosa R. D. Fischer 2005-4-9 732 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a shady roadside bank, with shrubs and chaparral of ridge top. 487 Comment
  UC1594691  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Road Lake Oroville Recreation Area (n side of Thermalito Diversion Pool about 1/4 mi e of the old bridge site) 76 Comment
  RSA126023  Scutellaria tuberosa E. K. Balls 1957-5-22 22504 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  SEINET10499230  Scutellaria tuberosa Mary Susan Taylor 1974-4-20 Taylor 184 A Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  HSC40295  Sedella congdonii J. P. Smith, J. O. Sawyer 1973-4-14 6043 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UCD73056  Sedella pumila Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  CHSC21  Selaginella hansenii J. Cowan 1943-3-22 Butte Salmon Hole. 243 Comment
  CHSC77037  Selaginella hansenii L. P. Janeway 2000-1-29 6632 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Between Big Chico Creek and Little Chico Creek. 518 Comment
  SEINET10470982  Selaginella hansenii Collins, 1978-4-21 Collins 14 Butte 6 miles n of Oroville, 1 mile w of Cherokee Rd. 1000 feet. 305 Comment
  SEINET10530438  Selaginella hansenii Mary Susan Taylor 1980-2-24 Taylor 2322 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CAS-BOT-BC363282  Senecio aronicoides A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CDA38817  Senecio sylvaticus L. Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC108822  Senecio sylvaticus Lowell Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  RSA0105573  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  UCD146246  Senecio sylvaticus Daniel S. Park 2010-4-10 15 Butte Table Mt. near creek. 339 Comment
  CAS-BOT-BC364270  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls 914 Comment
  CHSC41316  Senecio triangularis S. C. Morey 1983-7-23 597 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC40552  Senecio vulgaris Ahart; Jokerst 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
  CHSC420  Senecio vulgaris P. Delaplane 1965-3-20 4 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC90185  Senecio vulgaris Robert Kissane 1989-4-18 8 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  JEPS119600  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  UCR237318  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-4-14 18732 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CAS-BOT-BC364544  Senecio vulgaris Lowell Ahart 1982-1-8 3232 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut 50 Comment
  CAS-BOT-BC364551  Senecio vulgaris T. C. Fuller 1962-12-7 9958 Butte Hipp Ranch, end of Oliva Ave., 0.5 mi. e. of Mt. Ida Rd., ca. 7 mi. e. of Oroville Comment
  CHSC27251  Sequoia sempervirens P. Moyer 1971-10-2 29 Butte CSUC Campus. On n side of L.S. Bldg. 60 Comment
  SEINET10569490  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Individual, ca 100 yd S of Jct. 4th & Citrus Ave., Chico. Tree ca 100 ft tall. Ornamental planting in exposed r. grassland area. 30 Comment
  CHSC20121  Sequoiadendron giganteum M. S. Taylor 1975-5-6 562 Butte California State University, Chico. Ca. 60 m s of Holt Hall, ca. 10 m n of Big Chico Creek. 60 Comment
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Jul 25 2018
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CAS-BOT-BC364729  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS124335  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  RSA772427  Setaria pumila L. Ahart 2010-9-24 17237 Butte Near SW edge of the Golf Course, about 10 yrds south of the footbridge, along trail from the end of Centennial avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UC1100459  Setaria pumila Herbert L. Mason and Verne Grant 1946-9-27 13131 Butte Pennington-Gridley Rd. Butte Sink Comment
  UCD92745  Setaria pumila E. Wilson 1935-9-1 s.n. Butte Biggs Rice Station. Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  RSA32820  Sidalcea A. A. Heller 1942-5-27 16479 Butte Clear Creek Schoolhouse, Clark Road. Comment
  CHSC29978  Sidalcea asprella Lowell Ahart 1980-5-12 2255 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut; near North Honcut Creek. 50 Comment
  CHSC29409  Sidalcea calycosa R. A. Schlising 1980-6-1 3612 Butte S of Paradise at Kunkle Res., off Magalia Hwy. 440 Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  UC203663  Sidalcea calycosa subsp. calycosa A. A. Heller 1914-5-8 11381 Butte Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  UCD116578  Sidalcea hirsuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  SEINET11971666  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-1 19536 Butte Oroville-Forbestown Rd, about 8 mi E of Oroville Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CAS-BOT-BC213187  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Uplands along Chico Creek 5 miles east of Chico Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CAS-BOT-BC387069  Silene gallica Lowell Ahart 1988-5-12 5988 Butte about .25 mile NE of the Honcut Cemetery, Joie Osgood Ranch, about 3.5 miles E and 1.5 miles N of Honcut 60 Comment
  CAS-BOT-BC389012  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown 548 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  JEPS97370  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte T26N R5E SW1/4 SW1/4 Sec. 4, 6000 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  UC852931  Silene occidentalis subsp. longistipitata A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CHSC48264  Silene occidentalis subsp. occidentalis Vernon Oswald 1987-6-29 3039 Butte Jones Meadow Rd. e of Inskip, ca. 0.3 mi e of the intersection of the last section of road to Jones Meadow, at the East Fork of Last Chance Creek. On the n side of the creek. 1734 Comment
  CDA38825  Sisymbrium officinale L. Ahart 2012-4-3 17933 Butte On the sides of Bloody Pin Trail, about 100 yards west of Guardian Trial, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC14096  Sisymbrium officinale L. V. Ritter 1969-4-12 145 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  SEINET10507628  Sitanion hystrix Lowell Ahart 1985-6-30 Ahart 5091 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  JEPS119785  Smilax californica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18007 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC42970  Solanum americanum Lowell Ahart 1987-7-8 5790 Butte Along Walker Plains Road, about 1/2 mile east of Highway 70, near Pulga. 457 Comment
  CHSC76293  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte Idle rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS119911  Solanum americanum Lowell Ahart 2012-10-20 18514 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS121889  Solanum americanum Lowell Ahart 2014-11-17 19911 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  UCR88751  Solanum americanum J. T. Howell 1959-9-26 35083 Butte Arch Rock, N Fork Feather River 457 Comment
  SEINET10865539  Solanum nodiflorum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4228 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC1936  Solanum parishii J. Gulick 1929-5-27 Butte Paradise. 548 Comment
  SEINET12319559  Solanum parishii T. R. Norton 1977-1 6 Butte ca 7.5 mi E of Chico, 3.5 mi SW of Paradise, S of Honey Run Rd 91 Comment
  SEINET12328374  Solanum parishii M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5413 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  SEINET7274374 Image available Solanum parishii A. A. Heller 1915-4-12 11814 Butte 14 mi NE of Chico near Rock Creek Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  SD5270  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CAS-BOT-BC365380  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC11834  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CAS-BOT-BC364937  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte Roadsides and fields near Durham Comment
  CHSC28427  Solidago velutina subsp. californica M. S. Taylor 1979-10-5 2234 Butte On se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  JEPS117269  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  UCD136103  Soliva sessilis H. Clem Meith 1961-4-4 s.n. Butte Oroville. Comment
  SEINET10938100  Sonchus asper Mary Susan Taylor 1981-5-15 Taylor 3736 Butte T22N R5E nw/nw sec 5, Pulga SW quad. SE side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi N of Pulga bridge. l500 ft. 457 Comment
  CHSC107248  Sonchus asper subsp. asper Lowell Ahart 2011-6-3 17359 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Urban. 60 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  UC481512  Sorbus scopulina var. cascadensis H. F. Copeland 1924-8-10 886 Butte Jonesville Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  SEINET5319143  Sorghum halepense R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10452463  Spartium junceum Mary Susan Taylor 1975-4-26 Taylor 524 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
  CHSC98980  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC28823  Spergularia rubra J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 415 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd. Along dirt roads. 381 Comment
  SEINET10537506  Spergularia rubra Lowell Ahart 1983-8-16 Ahart 4309 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  RSA0116393  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SBBG28490  Spiraea douglasii E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  UC177584  Spiraea douglasii H. M. Hall Jul 1914 9785 Butte n Butte County 1554 Comment
  CAS-BOT-BC149711  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC43794  Spirodela polyrhiza Vernon Oswald 1984-6-21 1307 Butte Pine Creek at Hwy 32. Along the edge of the creek. 41 Comment
  RSA713021  Sporobolus creber L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  CDA14085  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1997-7-3 13969 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  SEINET10935788  Stachys palustris subsp. pilosa Mary Susan Taylor 1978-9-8 Taylor 1906 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC108744  Stachys pycnantha B. Castro; 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. 670 Comment
  CHSC43645  Stachys pycnantha B. Castro 1987-8-29 211 Butte Several feet from s edge of Butte Ck, ca 1/2 mi e of Hwy 99 crossing ca 2.1 mi s of Skyway in Chico. 68 Comment
  CHSC31792  Stachys stricta L. Ahart 1977-6-3 1402 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  UC179507  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi north of Oroville. Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  UC600630  Stellaria borealis subsp. sitchana E. B. Copeland 1930-7-4 Butte Jonesville Comment
  CHSC48273  Stellaria calycantha Vernon Oswald 1987-7-29 3166 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the SE1/4 of S6. Along a streamlet. 1752 Comment
  SD8166  Stellaria longipes subsp. longipes Mrs. R. M. Austin 1883-1 Butte Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  JEPS116039  Stellaria media Lowell Ahart, John Dittes 2009-3-20 15507 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
  JEPS119897  Stellaria media Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18112 Butte On the north side of Big Chico Creek, along the horse trail, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC45565  Stellaria nitens Lowell Ahart 1975-3-23 714 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC395111  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  UCD99456  Stellaria nitens L. Ahart 1973-3-14 168 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51043  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-10-2 1049 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
  SEINET10508641  Stipa columbiana Mary Susan Taylor 1977-8-17 Taylor 1481 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC93522  Streptanthus diversifolius L. P. Janeway 2006-4-23 8557 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Low southeast-facing slope of exposed blocky basalt. 393 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  SEINET10845509 Image available Streptanthus longisiliquus Glenn L. Clifton 1997-6-13 Clifton 35529 Butte .8 km north of Robley Point at about 3080 ft. in elevation, growing on a steep cut bank of the dirt road. 939 Comment
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC553  Streptanthus polygaloides 1954-5-30 Butte Rag Dump 5, near Stirling. 1127 Comment
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  SEINET10448515  Streptanthus polygaloides Mary Susan Taylor 1981-5-21 Taylor 3765 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
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  RSA636061  Streptanthus tortuosus Michael A. Vincent, Ethan H. Freid, Don Banks 1998-4-5 8101 Butte Table Mountain. Portion south of Beatson Hollow. Comment
  CHSC93177  Streptanthus tortuosus var. orbiculatus L. P. Janeway 1994-6-6 4656 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top and road cutbank. 1158 Comment
  CAS-BOT-BC48063  Styrax redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the rige, above Road 21N25A. 1143 Comment
  CHSC39670  Swertia albicaulis var. nitida Lowell Ahart 1983-6-21 4085 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  SBBG119858  Swertia albicaulis var. nitida L. Ahart 2003-7-20 10435 Butte S side of Bean Crk Rd, ca. 1/8 mi N of Little Bald Rock, ca. 2 air mi SE of Brush Crk 987 Comment
  CHSC38292  Symphoricarpos albus var. laevigatus Vernon Oswald 1983-6-2 609 Butte Upper Bidwell Park, Chico, along Yahi Trail E of Brown's hole. 207 Comment
  CAS-BOT-BC234615  Symphoricarpos mollis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC40316  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock. 1066 Comment
  SEINET10905399  Symphoricarpos rivularis Mary Susan Taylor 1979-10-13 Taylor 2266 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  SEINET10938829  Symphoricarpos rivularis Mary Susan Taylor 1976-3-9 Taylor 1020 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  JEPS115359  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CAS-BOT-BC97692  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Wyandotte Lake, E of Oroville 450 Comment
  CAS-BOT-BC97686  Symphyotrichum chilense Lowell Ahart 1984-12-28 4833 Butte about 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville 400 Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  UCSB63840  Symphyotrichum spathulatum Ahart, Lowell 1997-8-1 Butte Little Kinshew Creek, in Snow Meadow, about 1/4 mile east of table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC46101  Symphyotrichum spathulatum var. yosemitanum J. D. Jokerst; R. A. Schlising 1982-10-7 1655 Butte Eastern most pond in the chain of ponds that occurs on the bench along the south edge of Coon Hollow. 1706 Comment
  CAS-BOT-BC98370  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1959-9-20 34647 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC110351  Symphyotrichum subulatum var. parviflorum B. Castro; Margie Graham 2006-9-7 1610 Butte Sacramento Valley. 2 mi W of Hwy 99, 3 mi ESE of Richvale and ca 600 ft S of Richvale Hwy in Cherokee Canal.. 32 Comment
  CHSC66836  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1996-8-29 8246 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
  CAS-BOT-BC221938  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia 731 Comment
  CHSC90634  Tamarix parviflora Lowell Ahart 2005-4-2 11697 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
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 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
  SEINET10454608  Tauschia hartwegii Mary Susan Taylor 1975-3-3 Taylor 404 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CHSC73734  Tauschia kelloggii B. Castro 1997-4-30 726 Butte Ca 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On n edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Qunicy hwy, at base of road cut. 1066 Comment
  CHSC4670  Tellima grandiflora R. Carter 1966-4-28 373 Butte Found in Feather R. Canyon ca. 7 mi. N Jarbo Gap at intersection Hwy. 70 and 23N28; ca 100 yds. up 23N28 on E side of road. 640 Comment
  CHSC33975  Thelypteris nevadensis M. S. Taylor 1981-5-21 3782 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  CAS-BOT-BC88230  Thysanocarpus curvipes Dr. E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  CHSC39778  Thysanocarpus curvipes G. K. Mead 1976-4-14 18 Butte Ca. 10 ft from S side of Honeyrun Road and 15.6 mi ESE Chico. 137 Comment
  CHSC43452  Thysanocarpus curvipes Lowell Ahart 1978-4-19 1657 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  CHSC90251  Thysanocarpus curvipes Eric M. Haney 1989-4-23 19 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  CHSC90593  Thysanocarpus curvipes Joseph Silveira 1982-4-17 19 Butte 75 m east-northeast of Horseshoe Lake and 80 m north of Big Chico Creek, 4 km northeast of Chico. 190 Comment