Search Results — 2000 specimen records retrieved (1564 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
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  SEINET10453987  Acer circinatum Mary Susan Taylor 1981-5-21 Taylor 3789 Butte T23N R5E ne sec 28, Pulga quad. In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. Granite soils in shaded filtered light; Yellow Pine Forest; 1600 ft. 488 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
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  CHSC81442  Acer macrophyllum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  JEPS115154  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  SBBG50798  Acer macrophyllum J. Watjen 1969-5-4 36 Butte confluence of Rock Crk and N Fork Feather River 457 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CHSC5948  Acer negundo var. californicum M. MacArthur 1968-6-18 206 Butte SE side of Big Chico Creek, ca. 30 ft. N of Dining Hall, Chico State College campus. 60 Comment
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC63803  Achillea millefolium S. C. Morey 1983-7-28 634 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-BC210633  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap 426 Comment
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  RSA718386  Achnatherum occidentale subsp. californicum L. Ahart 2006-6-24 12859 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  UC600788  Achnatherum occidentale subsp. californicum H. F. Copeland 1932-8-17 Butte at the summit Jonesville 2000 Comment
  UC1594559  Achnatherum occidentale subsp. occidentale Lowell Ahart 1992-7-29 6875 Butte 3/4 mi nw Lotts Lake (1 mi ne of the Carr Mine); ; sw1/4 1798 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC35666  Achyrachaena mollis R. E. Preston 1982-4-22 256 Butte Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4 mi se of Paradise. 280 Comment
  CHSC38316  Achyrachaena mollis Vernon Oswald 1983-4-20 354 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  SEINET10474392  Achyrachaena mollis Mary Susan Taylor 1974-4-24 Taylor 189 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CAS-BOT-BC204849  Acmispon argophyllus var. fremontii Lowell Ahart 1984-6-8 4667 Butte Just north of the spillway at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 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
  CHSC94087  Acmispon brachycarpus R. Fischer 2005-4-2 678 Butte Chico. Collected from Bidwell Park, south end of Disk Golf Course, near the ridge top trail leading to the lower Guardian Trail. 365 Comment
  UCD103754  Acmispon denticulatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC52678  Aconitum columbianum var. columbianum Kirsten Tarp 1983-7-28 310 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1295 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CHSC28677  Aconogonon davisiae M. S. Taylor 1978-7-18 1705 A Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the intlet of the large lake. 1935 Comment
  CHSC4632  Adiantum aleuticum R. Carter 1966-4-26 461 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC31529  Adiantum jordanii L. Ahart 1978-3-19 1616 Butte Along North Honcut Creek. 3 mi ne of Honcut. 65 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
  HSC66338  Adiantum jordanii M. S. Taylor 1980-4-1 2422 Butte S side of Butte Cr. near Covered Bridge 6 mi. E of Chico 122 Comment
  SEINET11708232  Adiantum jordanii W. E. Spoon 4 s.n. Butte no further locality Comment
  SEINET7728134  Adiantum pedatum Unknown 1883-1 Butte Chico Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  RSA409472  Agastache urticifolia M. B. Dunkle 1945-8-7 9337 Butte Paradise Lake, Klamath Nat l. Forest, Marble Mts. (San Joaquin Co.?) Comment
  CHSC44148  Agoseris grandiflora Vernon Oswald 1988-8-3 3657 Butte Meadow on the N side of Butte Creek E of the road island on Humboldt Rd. S of Cherry Hill Campground. 1414 Comment
  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-BC13347  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of spur road near Plantation, ridge south of Galen Ridge, ca 3 mi SW of Brush Creek 914 Comment
  CHSC39999  Agropyron desertorum M. S. Taylor 1982-6-24 4733 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC61654  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SEINET10790042  Agrostis exarata var. monolepis Lowell Ahart 1982-5-28 Ahart 3440 Butte On damp to dry soil along edge of a small wash under trees, eE of North Honcut Creek, near Peter Ahart Ranch, ca. 3 miles NE of Honcut. 50 Comment
  CHSC30300  Agrostis hendersonii M. S. Taylor 1980-5-27 2710 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  SEINET10836300  Agrostis hendersonii Lowell Ahart, L. Hanson 1985-5-20 Ahart 5029 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC96813  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 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. 585 Comment
  CHSC94533  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CDA31941  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  JEPS104027  Alisma plantago-aquatica Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC31015  Alisma triviale M. S. Taylor; J. D. Jokerst 1979-11-11 2285 Butte Ca. 6 mi s of Chico on w side of Goodspeed-Watt (Aquas Frias Rd) Rd, in irrigation ditch. 33 Comment
  CHSC31016  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC34032  Alisma triviale L. Ahart 1981-7-7 2926 Butte Along the edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  CHSC43286  Alisma triviale Lowell Ahart 1987-9-4 5883 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  UCD111669  Allium Christopher Mallek 2007-5-4 s.n. Butte Magalia. 756 Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC29976  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut. 50 Comment
  SEINET8112090  Allium amplectens W. Roderick 1967-4-15 s.n. Butte SW of Paradise. 457 Comment
  SEINET3153878  Allium attenuifolium K. Conger 1907-1 sn Butte Brush Creek Comment
  CAS-BOT-BC135816  Allium jepsonii L. P. Janeway 1993-7-2 4423 Butte Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swayne HIll to Big Bar Mtn.) - Plumas National Forest, Oroville Ranger District 926 Comment
  CHSC29839  Allium membranaceum K. R. Stern 1980-6-17 6659 Butte Nimshew. 716 Comment
  CHSC36954  Allium membranaceum R. Schlising; R. Banchero 1980-6-5 3639 Butte N of Lake Oroville along Hwy 70, ca 3 mi S of the Pulga Crossing of Feather River. 640 Comment
  CHSC74029  Allium membranaceum B. Castro; Plumas NF botanists 1997-6-13 743 A Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  CHSC102181  Allium peninsulare George W. Hartwell 2009-4-22 Butte Concow Road, approx. 3-4 miles above Concow Reservoir on serpentine ridge burned by wildfire in summer 2008. 860 Comment
  SEINET10839452  Allium peninsulare Mary Susan Taylor 1980-4-19 Taylor 2546 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  CAS-BOT-BC132076  Allium peninsulare var. peninsulare Lowell Ahart 1989-5-10 6210 Butte Near a dirt road, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CHSC39056  Allium sanbornii var. sanbornii R. A. Schlising 1983-8-6 4432 Butte NE of Oroville and S of Brush Creek; E of Little Bald Rock. 1030 Comment
  CHSC44410  Allophyllum divaricatum Lowell Ahart 1988-6-29 6101 Butte On a bank along Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  RSA470050  Allophyllum gilioides subsp. gilioides H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CHSC40002  Allophyllum integrifolium Lowell Ahart 1983-8-16 4298 Butte On the high banks of a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CHSC34800  Alnus incana subsp. tenuifolia M. S. Taylor 1981-5-13 3698 A Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 1/2 mi w of Oroville-Quincy Hwy. 1371 Comment
  JEPS103532  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the E side of a canal, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS98447  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  SEINET10511200  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca. 2 mi ne of Honcut. Valley Grassland. 50 Comment
  SEINET10478811  Amaranthus blitoides Mary Susan Taylor 1975-10-3 Taylor 932 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC28620  Ammannia robusta M. S. Taylor. 1979-10-2 2213 Butte In sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  JEPS119805  Ammannia robusta Lowell Ahart 2012-8-24 18429 Butte On the strand of Black Butte Reservoir (west side), about 3 miles north of the bridge across Stony Creek and the upper reaches of Black Butte Reservoir. Comment
  CHSC66657  Ammi visnaga Vernon H. Oswald 1996-7-17 8068 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Weed along the farm road between Fish Camp and the Riparian Sanctuary. 28 Comment
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 Comment
  UC479936  Amsinckia eastwoodiae H. E. Brown Mar 3 1897-Mar 22 1897 168 Butte near Clear Creek 53 Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  UC725863  Amsinckia intermedia A. A. Heller 1942-4-26 Butte Oregon City Road Comment
  HSC32578  Anagallis arvensis Linda M. Barker 1974-4-20 147 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  SEINET10940260  Anagallis arvensis Mary Susan Taylor 1982-4-28 Taylor 4362 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
  RSA416592  Anaphalis margaritacea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC98905  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68m elevation level), about 370 m north the railroad bridge. 69 Comment
  JEPS83781  Anemone occidentalis V. Oswald and L. Ahart 1988-7-29 3644 Butte ca. 5 mi. (air) s.w. Jonesville (on ridge running e. from peak of Snow Mt., n. brow of ridge) 2103 Comment
  SD3474  Angelica arguta var. breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  SEINET10939832  Angelica breweri Lowell Ahart 1985-7-24 Ahart 5151 Butte Along the Forbestown Ditch, abut 2 1/2 miles north-east of Forbestown. Comment
  CHSC40890  Antirrhinum leptaleum Lowell Ahart 1985-6-30 5073 Butte About 10 yards south of Forbestown Road, about 100 yards south of intersection with Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  CHSC117333  Antirrhinum vexillocalyculatum subsp. intermedium L. P. Janeway 2016-8-8 12142 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  CAS-BOT-BC454511  Aphanes occidentalis Lowell Ahart 1983-4-7 3968 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/8 miles east hof Honcut 50 Comment
  CHSC47451  Aphyllon purpureum Lowell Ahart 1974-3-18 332 Butte Near 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
  CHSC63258  Aphyllon purpureum Lowell Ahart 1994-4-22 7286 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC102418  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 209 Comment
  CAS-BOT-BC392113  Aquilegia formosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC455227  Aquilegia formosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC41527  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 230 Butte E part of county at Ramsey Bar. 1341 Comment
  CHSC52191  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 236 Butte Ca. 23.5 air mi E of Chico. 1219 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  SEINET10492823  Arceuthobium campylopodum Mary Susan Taylor 1976-2-22 Taylor 998 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  LA42188  Arctostaphylos manzanita A. A. Heller; 1914-1-10 sn Butte canyon of Big Chico creek E of Chico Comment
  CHSC31680  Arctostaphylos manzanita subsp. manzanita L. Ahart 1974-2-12 296 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  UC725989  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte three mi below Paradise (on Pentz-Magalia road) Comment
  UC726645  Arctostaphylos mewukka A. A. Heller 1940-2-19 15501 Butte Neal Rd w Optimo Lodge (e of Paradise, along roadside) 670 Comment
  CAS-BOT-BC38572  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6299 Butte Junction of Forbestown Rd. and Black Bart Rd. 853 Comment
  CHSC41235  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2145 Butte Backbone of first ridge east of Camp Creek in the canyon of the North Fork Feather River. Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SD108266  Arctostaphylos truei Walter Knight, Irja Knight 1981-5-25 4109 Butte 27 miles north of Chico; State Highway 32. 1064 Comment
  UCD51948  Arctostaphylos truei John Thomas Howell 1975-6-15 51086 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  SEINET2028706 Image available Arctostaphylos viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 niles north of Chico Comment
  CAS-BOT-BC48252  Arctostaphylos viscida subsp. viscida Carl B. Wolf 1937-3-29 8339 Butte Sierra Nevada Foothills, 3 1/2 mi. below Magalia on Oroville Road. 487 Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  CHSC107585  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 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
  CHSC13863  Arctostaphylos viscida subsp. viscida L. E. Delight 1973-4-28 11 Butte Locally abundant ca. 30 yds on E side of road and ca. 1.3 mi. N on De Sabla-Stirling city turn-off, Magalia. 853 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  CHSC14116  Aristida oligantha F. T. Griggs 1973-8-19 123 Butte 10 miles s of Chico; 0.4 mile s of intersection of Pentz Road and Hwy 99E. Comment
  RSA718156  Aristida oligantha L. Ahart 2006-10-13 13504 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  UC569953  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 mi s Wyandotte; Smartsville Quadrangle 152 Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CAS-BOT-BC400428  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte In the canyon of Big Chico Creek east of Chico 68 Comment
  CHSC38263  Aristolochia californica Vernon Oswald 1983-2-14 68 Butte Upper Bidwell Park, beside the trail along Chico Creek ca. 100 ft. e of the power lines. 91 Comment
  SEINET10475902  Aristolochia californica Mary Susan Taylor 1973-1 Taylor 49 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC295832  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC295834  Arnica dealbata A. A. Heller 1914-8-7 s.n. Butte Summit east of Jonesville 2133 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  NY43502  Artemisia douglasiana S. Bianco 1995-8-26 1021 Butte Concow area, E of Concow Rd, along Kakini Rd 762 Comment
  RSA769225  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte East side of Big Chico Creek, southwest of meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 209 Comment
  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
  CHSC43269  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA126008  Asarum hartwegii E. K. Balls 1957-5-22 22514 Butte N Fork Feather River, above Camp Rogers, on trail to Buck s Lake 640 Comment
  SEINET10475947  Asarum hartwegii Mary Susan Taylor 1978-7-21 Taylor 1805 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
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  POM180847  Asclepias fascicularis H. F. Copeland 1923-7-9 s.n. Butte Mud Creek Ranch Comment
  CHSC46468  Asclepias speciosa Vernon Oswald 1989-6-26 3813 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of the s gate. 18 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
  CHSC2221  Asparagus officinalis D. Smith 1935-5-23 Butte Vacant lot in Chico. 57 Comment
  CAS-BOT-BC68879  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte Forbestown quad. On E side of Lumpkin-Laporte Rd, 1 mi N of Enterprise Bridge over sout fork Feather River, 457 Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC28517  Aspidotis densa M. S. Taylor; J. D. Jokerst 1979-10-13 2273 Butte On Jordan Hill Rd, (Ponderosa Way on some maps) ca. 11.1 mi n of its jct with Concow Rd, ca. 1.9 mi n of Sawmill Peak, ca. 2 mi e of Magalia. 853 Comment
  UC474223  Aspidotis densa H. F. Copeland 1920-8-2 200 Butte Jonesville 1600 Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  CHSC44150  Athyrium distentifolium var. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Somewhat below the n brow of the ridge. 2097 Comment
  SEINET10532286  Athyrium filix-femina var. californicum Mary Susan Taylor 1982-8-16 Taylor 5003 Butte T24N R4E nw/ne sec 11. Pulga NW quad. Jct small creek and rd in High Rock Ravine just s of Discovery Creek, ca. 4 air mi ne of Stirling City. Riparian; 4800 ft. 1463 Comment
  JEPS107360  Athysanus pusillus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  JEPS116043  Athysanus pusillus Lowell Ahart, John Dittes 2009-3-20 15498 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
  SEINET11935025  Atriplex rosea Unknown 1981-1 3220 Butte Near the entrance to Gray Lodge Waterfowl Mngmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  JEPS90628  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC2120  Avena barbata H. Silberman 1949-9-17 Butte N. side Golf Course, Chico. 76 Comment
  CAS-BOT-BC145883  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada. Peter Ahart Ranch, ca. 2 miles north and 0.5 miles east of Honcut. 50 Comment
  SEINET263348  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Ca 1/12 miles NW of the West Branch Bridge across Lake Oroville; near the end of the dirt road that leads to Lake Orovil 271 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC111150  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte High bank on the north side of Bige Chico Creek, about 30 yards east of Mangrove Avanue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  UCD129525  Balsamorhiza deltoidea W. R. Powell 1968-5-17 1515 Butte 3.5 miles east-northeast of Lake Wyandotte and 3 miles north of Rackberby. 466 Comment
  CHSC33725  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-10 3525 Butte S side of private rd, ca. 1/8 mi e of its jct with Ponderosa Way, ca. 4 mi n of Jarbo Gap on Hwy 70. 914 Comment
  UC854679  Berberis aquifolium var. dictyota A. A. Heller 1917-3-18 12669 Butte lower end of Iron Canyon (Chico Creek) Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  CHSC24790  Berberis dictyota Keith Lickey 1976-3-11 44 Butte Jordan Hill Rd ca. 3 km wnw of Concow Rd ca. 12 m w of Concow Creek Bridge. 457 Comment
  CAS-BOT-BC102073  Bidens frondosa Lowell Ahart 1982-10-11 3857 Butte west of the check-in-station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  SEINET10839335  Bidens frondosa Mary Susan Taylor 1979-10-2 Taylor 2208 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  UCD114124  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 Comment
  CHSC28769  Boechera breweri subsp. shastaensis J. D. Jokerst; D. Greenstein, T. B. Devine 1979-3-20 403 Butte On the sides of cliffs on the edge of Table Mountain, adjacent to the waterfalls of the S. fork of Coal Cr. Canyon. 365 Comment
  CHSC45499  Bolboschoenus fluviatilis Lowell Ahart 1988-10-19 6188 Butte On the margins and in a rice field, about 1/8 mile south of the intersection of the Western Canal and Butte Creek, about 3 1/2 miles west and 1/2 mile north of Nelson. 36 Comment
  SEINET3915039  Bolboschoenus glaucus Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch about 2.5 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  UC1100854  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12733 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET12217138  Boykinia elata Unknown 1985-1 5075 Butte E of the dirt road to the Forbestown Res., about 2-1/2 mi NE of Forbestown 869 Comment
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws Comment
  CHSC31733  Brachypodium distachyon L. Ahart 1972-5-6 96 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC641679  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 mi e of Oroville 152 Comment
  UCD114731  Brassica nigra L. Ahart 1982-5-29 3449 Butte N of Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Comment
  CHSC43959  Brassica rapa Vernon Oswald 1988-6-2 3350 Butte Soda Springs Campground on the e side of Hwy 32 n of Lomo. On the edge of Cascade Creek at the campground. 1139 Comment
  CAS-BOT-BC36722  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte East of the Feather River, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC106323  Brickellia californica John Thomas Howell 1961-9-22 36744 Butte Bank of Feather River, Oroville - Sierra Nevada 53 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
  UCD57368  Briza maxima M. S. Taylor; J. D. Jokerst and L. Ahart 1980-5-24 2745 Butte Foothill Woodland. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC145529  Briza minor Peter H. Raven 1953-5-9 5433 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CAS-BOT-BC145536  Briza minor Lowell Ahart 1982-4-29 3391 Butte Sierra Nevada. A little west of the sign in station, Gray Lodge, ca. 12 miles southwest of Gridley. 36 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
  SEINET10514424  Briza minor Joslin 1978-4-18 JOSLIN 15 Butte Open area, large population, ca. 11 mi N of Chico at intersection of Highway 99 with Broyles road. Grassland, sandy soil. 61 Comment
  CAS-BOT-BC482215  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  UC143058  Brodiaea californica var. californica Mrs. R. M. Austin May 1896 45 Butte Iron Canyon Comment
  SEINET194963  Brodiaea coronaria subsp. coronaria A. A. Heller 1938-5-22 15105 Butte On the roadside near the Chico airport 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
  SEINET3888972  Brodiaea multiflora Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  CHSC21265  Brodiaea nana M. S. Taylor 1975-5-1 376 Butte Ca. 1/2 km w of junc of Clark and Pentz Rds, ca. 17m se of Chico. 91 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  HSC66096  Brodiaea purdyi M. S. Taylor, R. S. Schlising 1980-6-7 3085 Butte N side of Old Humboldt Rd. just W of Butte Meadows Ranger Station 1341 Comment
  SEINET10967307  Bromus carinatus M. E. Banning 1969-7-3 Banning 10 Butte Across from Chico Jr. Hi, on S. side of Memorial Way Chico. 61 Comment
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  SBBG119800  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte ca. 20 yds E of poor dirt rd and 100 yds S of cabin, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1569 Comment
  JEPS103605  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  CAS-BOT-BC156030  Bromus diandrus Peter H. Raven 1953-5-9 5430 Butte 8 miles from Bangor on Oroville Road. Comment
  JEPS107295  Bromus diandrus Lowell Ahart 2005-4-14 11707 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
  UC1131173  Bromus diandrus J. E. Sowder 1933-6-6 83 Butte 1/4 mi w of Pentz 137 Comment
  CHSC101667  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS113792  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 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
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CHSC27568  Bromus madritensis subsp. madritensis Robert Schlising 1978-5-17 3260 Butte Magalia, serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC49701  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-15 1707 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET10662028  Bromus orcuttianus Lowell Ahart 2004-7-11 Ahart 11232 Butte T23N, R4E, southeast 1/4 Section 7. On the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 815 Comment
  UCD59531  Bromus rubens A. A. Heller 1914-4-11 11279 Butte 8 miles N of Oroville. Comment
  UCR237303  Bromus rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  HSC93423  Bromus sterilis L. Ahart 1995-5-30 7576 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  CAS-BOT-BC161505  Bromus tectorum Lowell Ahart 1987-5-6 5552 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  CHSC42841  Bulbostylis capillaris Lowell Ahart 1980-8-20 2475 Butte Along Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  JEPS107920  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 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
  UC600490  Calandrinia ciliata H. F. Copeland 1931-7-10 Butte gulch opening into Colby Canyon; Jonesville 1524 Comment
  CHSC44421  Calandrinia ciliata var. menziesii Lowell Ahart 1988-5-29 6011 Butte On the bottom of a small mined wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  HSC32613  Callitriche trochlearis R. A. Vanbianchi 1974-4-20 229 Butte Table Mtn. 305 Comment
  CAS-BOT-BC487515  Calochortus albus H. E. Brown 1897-4-15 s.n. Butte Near Clear Creek 53 Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SBBG115423  Calochortus albus D. Alenick 1998-4-25 13 Butte outside of Cherokee, NW of Lake Oroville 381 Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CAS-BOT-BC492600  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte On the Clark Road, 2 miles below Paradise, Comment
  RSA369087  Calochortus monophyllus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC41463  Calochortus nudus Lowell Ahart 1986-7-2 5340 Butte North of the dirt road, 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SEINET7073602  Calochortus weedii A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
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Jul 17 2018
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  CHSC43102  Calycadenia ciliosa Puleen Broyles 1987-10-26 1091 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Parcel. Dry Singer Creek bed. Comment
  CAS-BOT-BC106098  Calycadenia oppositifolia A. A. Heller; H. E. Brown 1902-5-9 s.n. Butte Berry Canyon, near Clear Creek Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  UC88992  Calycadenia oppositifolia Mrs. R. M. Austin May 1883 Butte Comment
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  UC1119094  Calycadenia spicata C. G. Albertus 1935-6-15 29 Butte 2 mi w of Themalte; Chico 45 Comment
  LA203131  Calycadenia truncata D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 mi. S. of Flea Valley on road to Yankee Hill Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  CAS-BOT-BC90925  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte Ditch along Table Mountain 8 miles north of Oroville. 182 Comment
  POM68555  Calycanthus occidentalis C. C. Bruce 1897-06 1822 `` Butte Big Chico Comment
  UC82816  Calyptridium monospermum Mrs. R. M. Austin 1896-7-1 696 Butte Colby Comment
  CHSC45387  Calyptridium umbellatum Vernon Oswald 1984-7-2 1336 Butte Humbug Summit. Growing on forest floor along the road. 2320 Comment
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS105268  Calystegia atriplicifolia subsp. buttensis Dean W. Taylor 1995-8-6 15398 Butte near Concow Reservoir (ca. 6 air miles E of Paradise) along Hoffman Road 0.3 miles West of Concow Road; Lassen National Forest 670 Comment
  UC1794960  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; besides Skyway 650 Comment
  RSA718168  Calystegia malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CAS-BOT-BC221230  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1982-9-29 3832 Butte At the north end of the Lost Creek Res. Dam, about 2 miles north-west of Strawberry Valley 1100 Comment
  CHSC63134  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1994-7-1 7442 Butte Around large rocks, on the north side of the larger pond, steep rocky slope on the north side of Henness Pass Road,at Keystone Gap, east of Keystone Mountain, about 1-1/2 miles north-east of Middlewaters, about 11 miles (air) northeast of Alleghany. 1889 Comment
  CHSC95124  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  JEPS115674  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2009-5-30 15775 Butte 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 379 Comment
  POM32729  Camissonia graciliflora Kate Conger 1905-1 s.n. Butte Brush Creek Comment
  SEINET10462919  Campanula prenanthoides Edwin B. Copel 1924-8-2 Copeland 599 Butte JONESVILLE, DRY WOODS 1524 Comment
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  POM196064  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  CHSC34480  Cardamine oligosperma J. DiVittorio 1974-3-20 1 Butte S side of Holt Hall, Cal. State University, Chico campus in planter. 57 Comment
  JEPS122189  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10874445  Cardamine oligosperma Mary Susan Taylor 1981-3-24 Taylor 3444 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 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
  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
  UC8055  Carex W. H. Brewer 1470 Butte near Chico Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC600698  Carex angustata H. F. Copeland 1927-5-6 1069 Butte Jonesville Comment
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC45045  Carex athrostachya Vernon Oswald 1987-6-23 3021 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC45046  Carex aurea Vernon Oswald 1983-6-22 752 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  UC600699  Carex aurea H. F. Copeland 1920-8-1 171 Butte Jonesville Comment
  SEINET10927860  Carex aurea Mary Susan Taylor, Lowell Ahart 1982-8-15 Taylor 4191 Butte T25N R5E SW1/4 SE1/4 Sec 35. Joneville SW quad. S side of Coon Hollow Rd in moist spot, 1.1 mi E of its jct with Humbug Rd. 12 mile NE of Stirling City. With Perideridia howellii, Hypericum anagalloides. 1676 Comment
  SEINET3128047  Carex barbarae L. S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CHSC52253  Carex bolanderi L. P. Janeway; R. A. Schlising 1988-7-16 3008 Butte Along Willow Creek 1/2 mi NW of Jonesville. 1508 Comment
  SEINET6417024 Image available Carex bolanderi L. Janeway, Gog, L 2008-1 3199 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  SEINET10752410  Carex brainerdii Lawrence P. Janeway 1987-6-27 Janeway 2330 Butte T24N, R5E, Kimshew Point quad NW1/4 of sec. 21. Along Little Kimshew Cr just N of Ramsey Bar. 1341 Comment
  JEPS116653  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  JEPS121423  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Rosd, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  CHSC107579  Carex feta Lowell Ahart 2011-8-23 17649 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  SEINET10889103  Carex feta A. Arthur Heller 1913-6-4 Heller 10781 Butte Table Mountain Oliver Ranch north of Oroville. Comment
  CHSC55436  Carex fracta L. P. Janeway 1991-6-8 3993 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  SEINET7485219 Image available Carex fracta Peter F. Zika 2009-1 24616 Butte above Humboldt Road, c. 1 air km S of Humboldt Summit 1900 Comment
  CHSC113412  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CAS-BOT-BC20951  Carex heteroneura J. D. Jokerst 1982-9-7 1658 B Butte Montane meadows and roadside ditches, east end of Coon Hollow on north side of the West Branch Feather River. 1676 Comment
  CAS-BOT-BC28193  Carex hirtissima James D. Jokerst 1982-6-4 1591 Butte Headwaters of Concow Creek ca 1.0 mi S of Flea Valley. 1097 Comment
  CHSC63289  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  CHSC76350  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  SEINET7562371 Image available Carex infirminervia Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10516 Butte Ca 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1695 Comment
  CHSC102215  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley. Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. 44 Comment
  CHSC41296  Carex jonesii S. C. Morey 1983-7-21 491 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET4110849  Carex laeviculmis D. W. Taylor 2006-1 19610 Butte Keyser Creek; West Branch Feather River watershed. 1524 Comment
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  CAS-BOT-BC31500  Carex leptopoda A. A. Heller 1928-7-10 14667 Butte Wet meadows at Butte Meadows Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CAS-BOT-BC32156  Carex multicaulis Herbert Faulkner Copeland 1931-6-10 1546 Butte Woods between Willow and Colby Creeks. Jonesville Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 Comment
  CAS-BOT-BC119559  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CAS-BOT-BC119565  Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the N Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC45042  Carex nudata Vernon Oswald 1984-4-8 1118 Butte Upper Bidwell Park, Chico, in Chico Creek between Parking Area R and Brown's Hole. 170 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 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
  UCD140771  Carex praegracilis R. E. Preston 1982-4-4 215 Butte Gray Lodge wildlife management area. 18 Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CHSC52873  Carex straminiformis L. P. Janeway 1986-9-1 1835 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC28565  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On s side of Oroville-Quincy Hwy along creek in a meadow, ca. 14 mi n of Lake Madrone. 548 Comment
  CHSC83266  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7621 Butte High Cascade Range. Along the County Road above the Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  CAS-BOT-BC116732  Carex subfusca Lowell Ahart 1984-7-19 4751 Butte Ca. 1 1/2 mi SE of Bald Mountain, 1/4 mi E of Oak Point, ca 5 mi NE of Stirling City. 1500 Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  JEPS117693  Carex vernacula Lowell Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 (air) southeast of Philbrook Reservoir 1886 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  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
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  SEINET10549992  Castilleja Mary Susan Taylor 1980-4-6 Taylor 2434 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  RSA795885  Castilleja affinis subsp. affinis L. Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  CDA13307  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13153 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS N60. Comment
  CHSC109609  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 428 Comment
  CHSC34082  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte N side of Feather River Hwy 70m at nw end of Pulga bridge and along Pulga rd ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  JEPS80628  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte ca 0.25 mi <?> nw end of Pulga Bridge (along Pulga Rd, n side of Feather River Highway, ca 20 mi ne of Oroville); Pulga Quad. 487 Comment
  CHSC60588  Castilleja attenuata Vernon H. Oswald; Lowell Ahart 1993-4-21 5291 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 731 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 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. 32 Comment
  UCD122337  Castilleja attenuata M. Vincent 1964-4-9 532 Butte 1 1/2 miles south of Pearson Rd. Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC175548  Castilleja exserta A. A. Heller 1913-4-7 10729 Butte 6 mi n Oroville Comment
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 Comment
  CHSC97368  Castilleja lacera Paul Maslin 2005-5-1 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106096636E 4409708N. 268 Comment
  CHSC11890  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Jonesville. In 'Scotch John' meadow. 1700 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  UC600529  Ceanothus cordulatus H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  CHSC32656  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte Shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  SEINET12210557  Ceanothus cuneatus Unknown 1975-1 17 Butte 250 mi from Cohasset Rd, 6.8 mi.NE of Chico airport N of Chico Comment
  SEINET12210968  Ceanothus cuneatus Unknown 1977-1 14 Butte 4 mi N of Paradise and 100 yds N of Magalia 732 Comment
  SEINET12210971  Ceanothus cuneatus M. P. Howe 1984-1 12 Butte Doe Mill Summit 579 Comment
  CHSC50338  Ceanothus diversifolius Vernon Oswald 1990-5-14 4211 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  JEPS113416  Ceanothus diversifolius Lowell Ahart, Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  SBBG121216  Ceanothus diversifolius L. Ahart 2007-7-10 14283 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca 17 mi NE of Oroville 1032 Comment
  CAS-BOT-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  CAS-BOT-BC50813  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CHSC23673  Ceanothus integerrimus M. S. Taylor 1976-4-27 1087 Butte Abundant ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  CHSC39784  Ceanothus integerrimus Eloise Gallatin 1935-5-2 Butte Paradise. Comment
  CHSC84646  Ceanothus integerrimus Matt Quinn 2001-4-29 48 Butte In foothill of Butte County, collected near Butte Creek, approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 167 Comment
  CHSC90034  Ceanothus integerrimus Ross Rowland 2001-4-14 44 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CHSC27788  Ceanothus integerrimus var. californicus Michael Snider 1978-4-16 5 Butte 25 ft s of Hwy 32, 9 mi e of jct. of Hwys 99 and 32. 9 mi e of Chico. 365 Comment
  CAS-BOT-BC50712  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC28138  Ceanothus lemmonii J. D. Jokerst 1979-5-7 220 Butte Top of Cohasset Ridge (Tuscan Lava). 200 m. sw of Cohasset Hwy. 463 Comment
  SEINET10493642  Ceanothus lemmonii Mary Susan Taylor 1980-5-27 Taylor 2736 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  UC600528  Ceanothus velutinus H. F. Copeland 1927-9-3 Butte Jonesville Comment
  RSA795774  Celtis australis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 81 Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  CHSC106238  Celtis sinensis L. P. Janeway; B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  CDA29278  Centaurea cineraria Ed Finley 2009-5-14 s.n. Butte Paradise. Private residence: 5252 Edgewood Lane, near Pearson Road. 0 Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  SFV10906  Centaurium venustum M. L. Vincent 1967-6-25 668 Butte Cherokee Road to Oroville. Table Mountain. Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  CHSC25486  Centunculus minimus L. Ahart 1977-6-2 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC77992  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  CHSC90970  Cerastium arvense L. P. Janeway; J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge. 991 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CAS-BOT-BC388257  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  RSA590212  Cerastium glomeratum Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7231 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET11892046  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Reservoir, about 2 mi S of Paradise 488 Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC109761  Chamaesyce maculata Lowell Ahart 2012-10-20 18498 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC110407  Chamaesyce maculata Lowell Ahart 2012-9-28 18473 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC113196  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  JEPS115727  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  UC175344  Chamaesyce maculata A. A. Heller 1913-9-16 11139 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC29804  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1979-10-3 2219 Butte Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi e of Chico. Comment
  CHSC44390  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1988-7-3 6121 Butte Along the edge of the dirt road, about 1/10 mile north of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  POM196123  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CAS-BOT-BC69446  Cheilanthes gracillima F. N. Bassett 1916-6-1 s.n. Butte Jonesville. Comment
  SEINET11716731  Cheilanthes gracillima M. S. Taylor 1978-1 1840 Butte Big Bald Rock, ca 2 mi E of Lake Madrone 998 Comment
  CHSC117751  Chenopodium strictum var. glaucophyllum Lowell Ahart 2016-10-25 21373 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC71636  Chimaphila umbellata Vernon H. Oswald; Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  JEPS108799  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  UCD117414  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CAS-BOT-BC498626  Chlorogalum angustifolium Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  POM105863  Chorizanthe membranacea R. M. Austin 1883-5-1 s.n. Butte Iron Canyon, Big Chico Creek Comment
  JEPS119690  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-5-2 17953 Butte About 50 yards northeast of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  POM105880  Chorizanthe stellulata R. M. Austin 1879-05 s.n. Butte Dead Man's Grade Comment
  CAS-BOT-BC36368  Chrysolepis sempervirens John H. Thomas 1974-11-3 17659 Butte Between Stirling City and Butte Meadows, north of Chico. 5.2 miles from Butte Meadows along the road. 1524 Comment
  CHSC49528  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. On the edge of the creek. 1813 Comment
  RSA126604  Cinna latifolia H. S. Yates 1936-8-13 6098 Butte Butte Meadow. 1341 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  CHSC34023  Cirsium vulgare L. Ahart 1981-7-26 3010 Butte 1/2 mi sw of the Graylodge Waterfowl Mgmt Area HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC228748  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  CHSC5949  Citrus aurantium M. MacArthur 1968-6-17 180 Butte In large boxes at NE end of lawn between LS bld. and Auditorium, Chico State College campus. 60 Comment
  SEINET10544482  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-A Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  CHSC87552  Clarkia arcuata R. D. Fischer 2004-4-13 65 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the middle portion of the Humboldt Trail. 426 Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  SEINET12194210  Clarkia biloba subsp. brandegeeae Unknown 1984-1 4658 Butte Along Ponderosa Way, ca 1/8 mi W of Ponderosa Dam, ca 2 mi NW of Forbestown; 370 Comment
  RSA712993  Clarkia concinna subsp. concinna L. Ahart 2006-5-19 12636 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 406 Comment
  CHSC84730  Clarkia gracilis subsp. albicaulis L. P. Janeway; John Hunt 2003-6-10 7824 Butte Northern High Sierra Nevada. On front of ridge into Middle Fork Feather River arm of Lake Oroville, opposite mouth of Bean Creek. 351 Comment
  RSA0060028  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte 4-5 airmiles N. of Paradise, and W. of upper Paradise Pines. Turn W. off Skyway Road on Nimshew Road and take the S. turn on Centerville Road (on older maps Humbug Road), ca 1.4 miles S. of this junction. 620 Comment
  CHSC35138  Clarkia gracilis subsp. gracilis R. Schlising; R. Banchero 1981-5-20 4056 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  UC1186582  Clarkia gracilis subsp. gracilis G. I. Stage, R. W. Thorp 1959-6-21 59 -119 Butte 11.9 mi ne Chico (Highway 32) Comment
  CHSC71152  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro 1994-7-8 4686 Butte 0.7 mi south of South Branch Middle Fork Feather River; 1 mi west-southwest of the mouth of Cascade Creek. Road cutbank. 1234 Comment
  LA206098  Clarkia mildrediae subsp. lutescens L. P. Janeway; 1995-7-7 4838 Butte along French Creek rd 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy 801 Comment
  CAS-BOT-BC163275  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap 277 Comment
  CHSC68905  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1997-7-11 7743 Butte On a road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC86578  Clarkia mosquinii L. P. Janeway; John Hunt 2003-7-1 7861 Butte Northern High Sierra Nevada. Along southeast edge of Middle Fork Feather River arm of Lake Oroville, 960 m west-southwest of mouth of Frey Creek. Just above high water line. 276 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  RSA0059909  Clarkia mosquinii L. Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  HSC38017  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-10 2477 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC725303  Clarkia purpurea A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  UCD21824  Clarkia purpurea L. D. Gottlieb 2003-5-24 302 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CAS-BOT-BC172529  Clarkia purpurea subsp. purpurea A. A. Heller 1912-5-23 10749 Butte Table Mountains Olive Ranch north of Oroville Comment
  CAS-BOT-BC163645  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1983-6-12 4036 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC64326  Clarkia purpurea subsp. quadrivulnera H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  SEINET10453167  Clarkia rhomboidea Mary Susan Taylor 1981-5-21 Taylor 3790 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CAS-BOT-BC165442  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  CAS-BOT-BC165444  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte Along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  CAS-BOT-BC32912  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 km E of the Jonesville Hotel, above S bank of Jones Creek 1550 Comment
  CHSC98377  Claytonia palustris Dean Wm. Taylor; Tom Engstrom 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road, growing in moist bed of stream draining the site ca. 150 ft downslope to the SE of the road. 1524 Comment
  JEPS109817  Claytonia palustris Dean W. Taylor 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  SEINET10572694  Claytonia parviflora Mary Susan Taylor 1981-5-5 Taylor 3619 Butte T20N R6E sw/ne sec 11. Forbestown quad. In shaded creek crossing 21N35Y, ca. 0.5 mi S of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC32135  Claytonia rubra subsp. rubra L. Ahart 1977-3-28 1228 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC56074  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2797 Butte Southeast-facing slope above Butte Creek; along road in west side of the canyon 3.7 mi south of Humboldt Road. 1295 Comment
  CHSC110129  Clematis lasiantha L. P. Janeway 2012-3-21 10799 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  SEINET5337775  Clematis lasiantha M. J. Williams 1967-4-15 s.n. Butte Near Magalis. 457 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 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. 51 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  SFV3357  Collinsia sparsiflora M. L. Vincent 1962-4-16 196 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  CHSC43510  Collinsia sparsiflora var. collina Lowell Ahart 1979-4-17 1829 Butte About 1/4 mile north of Avacado Avenue, about 2 miles north-west of Bangor. 137 Comment
  UC1521808  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte 1 mi N, 2.7 mi E of Honcut; Peter Ahart Ranch, N Honcut Creek 50 Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC93857  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  HSC97025  Collinsia tinctoria L. Ahart 2006-6-9 12654 Butte W side of Bardees Bar Rd., N of small stream, 1/8 mi. W of bridge across N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  SEINET10548316  Collinsia tinctoria Mary Susan Taylor 1974-5-20 Taylor 254 Butte Chico. Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  UC175549  Collinsia tinctoria A. A. Heller 1913-5-28 10768 Butte Table Mountain 8 mi n of Oroville 182 Comment
  UC1012162  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25684 Butte above Oroville (in Lassen National Forest, along Feather River, Route 24); Lassen National Forest, Feather River 548 Comment
  POM183150  Collomia grandiflora E. B. Copeland 1930-6-26 1312 Butte Neighborhood of Jonesville. Butte Creek Canyon 1677 Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  RSA337391  Collomia heterophylla L. Ahart, P. Ahart 1984-6-10 4694 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 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
  CDA40005  Collomia linearis T. C. Fuller 1962-7-12 9171 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10496711  Collomia linearis Mary Susan Taylor 1978-6-24 Taylor 1644 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC93968  Collomia tinctoria R. D. Fischer 2004-6-20 749 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  CAS-BOT-BC180251  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CHSC94107  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  JEPS108901  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  JEPS113203  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir 618 Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 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
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM168516  Corallorhiza maculata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC2335  Corallorhiza striata J. Chew 1954-5-30 Butte Road between Rag Dump and Flea Valley. 1097 Comment
  JEPS6678  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e of Oroville (in the Quercus Douglasii Belt) Comment
  POM193363  Cornus californica E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  SEINET12137282  Cornus nuttallii T. R. Norton 1977-1 11 Butte ca 6.5 NE of Paradise, 1.5 mi N of Magalia, 0.5 mi N of Magalia Reservoir, 0.25 mi E of the Skyway Comment
  UC202363  Cornus sericea subsp. sericea H. M. Hall July 1914 Butte Butte Creek near Jonesville; Butte Creek 1554 Comment
  UC1122799  Cornus sessilis J. E. Sowder 1935-7-6 108 Butte 2 mi. n.e. Cohassett; Chico Quad. 944 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
  HSC97081  Coronilla varia L. Ahart 2006-6-24 12862 Butte On Cohasset Ridge, about 4 mi. NE of Cohasset, E side of Ponderosa Way. 1113 Comment
  JEPS106093  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  CAS-BOT-BC401858  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  CHSC28013  Corylus cornuta var. californica M. S. Taylor 1978-7-21 1779 Butte Lake Madeone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  RSA0076090  Cotoneaster lacteus L. Ahart 2009-11-19 16532 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC54346  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  JEPS128724  Cotula australis Lowell Ahart 2017-4-22 21389 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  SEINET10473724  Cotula coronopifolia Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 100 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
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC28639  Crassula connata M. S. Taylor 1979-3-31 1972 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  SEINET10449716  Crassula muscosa Mary Susan Taylor 1980-3-28 Taylor 2403 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC35689  Crassula tillaea J. D. Jokerst 1982-4-12 1522 Butte W side hwy 149, 3/10 mi N of hwy 70. Comment
  CHSC77995  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET3477506  Crucianella angustifolia Unknown 2003-5-26 10214 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.67 miles east of Honcut 60 Comment
  CAS-BOT-BC190089  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut. 60 Comment
  CHSC110331  Crypsis schoenoides B. Castro; Margie Graham 2013-8-24 1602 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS124349  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  HSC11252  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte Blavo, near Chico Comment
  CHSC33410  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-14 3896 Butte Along Skyway in N. Butte County, 4.3 mi N of Inskip (=0.9 mi N of jction Skyway and Bull Hill Road). 1539 Comment
  JEPS113173  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeas 636 Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC46751  Cryptantha flaccida Lowell Ahart 1972-5-8 102 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
  POM71368  Cryptantha flaccida C. C. Bruce 1891-03 1930 Butte Hams? Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  SEINET10497603  Cryptantha hendersonii Mary Susan Taylor 1980-4-18 Taylor 2528 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC44380  Cryptantha intermedia Lowell Ahart 1988-6-29 6113 Butte Along Bean Creek Road, near camping area along Bean Creek, about 4/3 mile south-west of Johnson Ranch, about 2 1/2 miles south of Little Bald Rock. 548 Comment
  RSA32911  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  UC480683  Cryptantha intermedia H. F. Copeland 1920-5-23 250 Butte ridge between Big Chico Creek and Little Chico Creek (Humboldt ridge) Comment
  CHSC109229  Cryptantha milobakeri Robert Fischer 2012-6-17 1064 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC85564  Cupressus macnabiana C. C. Parry 1882-1-1 s.n. Butte Chico Comment
  SEINET10966022  Cupressus macnabiana Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5395 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  SEINET10496602  Cuscuta californica Lowell Ahart 1991-9-6 Ahart 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south- west of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  SEINET10969187  Cuscuta californica Mary Susan Taylor 1979-10-13 Taylor 2264 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC38432  Cuscuta californica var. breviflora Vernon Oswald 1983-6-5 637 Butte Upper Bidwell Park, Chico, near rimrock of the north rim slightly e of Horseshoe Lake. 152 Comment
  CHSC54526  Cuscuta californica var. breviflora Vernon H. Oswald; Lowell Ahart 1991-8-19 4838 Butte East end of coon Hollow Rd (Forest Rd 26N74), near its junction with Forest Fd. 25N15 (to Philbrook Reservoir). 1706 Comment
  RSA774129  Cuscuta californica var. breviflora L. Ahart 2010-9-21 17232 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC100108  Cuscuta subinclusa L. P. Janeway; Shandin Rudesill 2008-8-5 9534 Butte Northern High Sierra Nevada. Plumas National Forest; upper end of Magee Ridge at a small gap between Heinz Creek and Hibbard Creek; 2.7 air km north of Coyote Gap. 1353 Comment
  UC478482  Cuscuta subinclusa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  SEINET12122113  Cymopterus terebinthinus var. californicus R. A. Schlising 1980-1 3666 Butte N part of county, along Humboldt Rd, 1.9 mi NE of junction with Hwy 32 at Lomo, Carpenter Ridge Comment
  CAS-BOT-BC190246  Cynodon dactylon Lowell Ahart 1980-8-16 2585 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3153056  Cynoglossum grande K. Conger 1907-1 D Butte Brush creek Comment
  UC480689  Cynoglossum grande H. F. Copeland 1923-2-24 107 Butte Ferny Way near Chico Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  SEINET12327004  Cynoglossum grande Unknown 1982-1 18 Butte ca .68 mi E of Forest Ranch on Hwy 32 and .68 mi ESE on Fitzgerald Rd-Tippetoe Ln, 1.5 mi ESE.. 671 Comment
  CAS-BOT-BC114741  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC31690  Cyperus difformis L. Ahart 1974-10-20 666 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  JEPS110535  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  POM313104  Cyperus eragrostis H. L. Mason, Verne Grant 1945-7-10 12634 Butte Along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, southern Butte County, Butte Sink Comment
  RSA78211  Cyperus eragrostis E. K. Balls, Percy C. Everett 1952-10-14 18217 -a Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 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
  CHSC51020  Cyperus erythrorhizos Lowell Ahart 1990-8-15 6587 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  UCD19359  Cyperus flavicomus E. Dean; with J. Ditomaso and E. Healy 2001-8-20 850 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. South side of Hamilton Road, W of jct with Riceton Hwy, W side of RR tracks. Along dirt road that is the extension of Hamilton Rd. 30 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
  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
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC78282  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC94763  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC113848  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2479 Butte Near Hurleton Swedes Flat Road. 600 Comment
  JEPS122260  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 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
  UC1100557  Cyperus squarrosus Malcolm A. Nobs and S. Galen Smith 1949-7-29 1089 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  UC144668  Cyperus squarrosus Dr. E. B. Copeland 1903-7-27 3489 Butte Chico Comment
  CHSC31629  Cyperus strigosus L. Ahart 1969-9-9 32 Butte Edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC68050  Cystopteris fragilis Lowell Ahart; Vernon Oswald 1987-8-5 3184 Butte Outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail 2072 Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC478560  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte woods by Butte Creek Jonesville 1550 Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  UCR143548  Danthonia americana H. F. Copeland 1931-6-11 1558 Butte Jonesville, Butte Creek Meadows 1829 Comment
  RSA774130  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte North side of the poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  POM92210  Darmera peltata C. C. Bruce 1898-1 2410 Butte [no additional locality data provided] Comment
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  UCD95781  Delphinium hansenii M. Vincent 1968-6-5 776 Butte 1 mile S. of Cherokee on road to Oroville. Roadside at old Campbell Ranch. Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  CHSC117611  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-4-26 11937 Butte Sacramento Valley. Along Nelson Road 1.0 Road-km west off its bridge across Thermalito Forebay; where the road crosses Campbell Hills. 94 Comment
  CHSC52459  Delphinium hansenii subsp. hansenii Vernon Oswald 1983-5-21 509 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  CHSC51109  Delphinium nudicaule Ginger S. Gough 1989-4-8 18 Butte Ca. 9 m ese of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  CHSC56873  Delphinium nudicaule P. D. Nelson 1979-3-17 Butte Ca 150 ft s of Bidwell Park Road at Salmon Hole, ca 9 mi e of California State University, Chico. And ca 30 ft n of Big Chico Creek. 152 Comment
  RSA398659  Delphinium nudicaule M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  POM99888  Delphinium nuttallianum C. C. Bruce 1897-03 1916 Butte Butte Creek. Comment
  CAS-BOT-BC121621  Delphinium patens subsp. patens Peter H. Raven 1953-5-9 5444 Butte 7.2 miles from Bangor on road to Oroville Comment
  CHSC22990  Delphinium variegatum Robert A. Schlising; L. Thurman, T. Crovello 1963-6-7 2617 Butte Sierra Nevada. Foothills. 3.1 mi. s. Cohasset along Cohasset Hwy. 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
  CHSC53299  Delphinium variegatum Eric F. Heinitz 1979-4-25 2 Butte Northern most Butte Co. on Cana-Pine Creek Rd. NW of Singer Creek. Near vernal pool. Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC388455  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  CHSC23654  Dicentra formosa M. S. Taylor 1976-4-20 1078 Butte On e side of Ridge Rd, ca 100 m n of junction of Ridge Rd and Ponderosa Way, Magalia. 609 Comment
  SEINET12092936  Dicentra formosa L. Ahart, Ahart, P. 1984-1 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, Yellow Pine Forest 700 Comment
  CAS-BOT-BC254524  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1983-6-26 4138 Butte Along Ponderosa Way, ca. 14 miles NE of Oroville. Along the edges of the E Fork of Canyon Creek 500 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CDA13867  Dichelostemma capitatum G. F. Hrusa, T. D. Wilfred 1997-5-7 13725 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SD6360  Dichelostemma capitatum subsp. capitatum Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  CHSC4254  Dichelostemma multiflorum J. Senter 1967-4-17 27 Butte Located along Bidwell Rd., ca. 4.3 mi. from Horseshoe Lake, Chico. 167 Comment
  CAS-BOT-BC501096  Dichelostemma multiflorum John Thomas Howell 1962-6-15 37466 Butte Magalia, Sierra Nevada 731 Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CHSC2514  Dichelostemma volubile W. Fitzwater 1958-4-12 Butte Cohasset Rd., Chico area. 243 Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  CHSC33903  Digitalis purpurea M. S. Taylor 1981-5-15 3742 Butte Both sides of rd 22N92 between its jct with 23N00.1 and West Branch French Creek, ca 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 883 Comment
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CAS-BOT-BC209036  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte North of the Oroville Grdiley Highway, about 3 miles east of Gridley 28 Comment
  UCD63970  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  CHSC44746  Diplacus douglasii R. Banchero 1980-4-7 93 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and Hurleton-Swedes Flats Rd. 373 Comment
  CAS-BOT-BC150505  Diplacus grandiflorus A. A. Heller 1914-5-18 11407 Butte Between Chico and Forest Ranch, 14 miles from Chico; West slope of the Sierra near Forest Ranch 609 Comment
  SEINET8370221  Diplacus grandiflorus Unknown 1940-6-5 25677 Butte Route 24; along Feather River, above Oroville 10-12 mi. above. 1829 Comment
  SEINET215109  Diplacus kelloggii R. J. Planck 1963-1 28 Butte Ragdump Rd, 4 mi E of Stirling City log pond Comment
  SEINET189578  Diplacus layneae Lincoln Constance 1941-1 2828 Butte S branch of the Feather River at Magalia, Sierra NV foothills 488 Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC44745  Diplacus torreyi R. Banchero 1980-7-7 289 Butte Along Quartz Creek Rd 0.3 mi N of the Fall River campground, ca 6.5 mi NE of the town of Feather Falls. 1021 Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CHSC88054  Disporum hookeri R. D. Fischer; Jenny Marr 2004-5-16 180 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located at n. end, e. side where rd. crosses mdw., near mdw. 1292 Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  JEPS115038  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville 34 Comment
  CHSC90234  Dodecatheon clevelandii subsp. patulum Ross L. Jones 1989-2-25 4 Butte Ca. 100 m e of abandoned city dump bordered by Highway 32 and Humboldt Rd., immediate outskirts e of Chico. 60 Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  HSC32573  Downingia bella David Johnson 1974-4-20 26 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC83460  Downingia bicornuta R. M. Winchell 1980-4-23 7 Butte N of Chico, in vernal pool between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  UC635661  Downingia ornatissima var. ornatissima Herbert L. Mason 1927-5-9 3708 Butte 15 mi w Oroville; Sacramento Valley Comment
  CAS-BOT-BC41349  Draba verna Lowell Ahart 1984-2-27 4497 Butte Honcut. Peter Ahart Ranch. About 12 miles south of Oroville. 50 Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CDA6216  Draba verna var. aestivalis L. Ahart 2004-3-26 10705 Butte Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. Comment
  CHSC35013  Draba verna var. verna R. E. Preston 1982-3-6 186 Butte Dirt road, ridge on s side of canyon of Sycamore Creek; ca. 300 yds n of boundary of Upper Bidwell Park n of Horseshoe Lake, Chico. 182 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  CHSC108716  Drosera rotundifolia B. Castro; L. P. Janeway 2002-7-7 1377 Butte High Cascade Range. Soggy sedge-dominated meadow ... Field redacted by CHSC, contact the data manager for more information 170 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  UCD123982  Drosera rotundifolia Barry Rice 2011-7-6 BR 110703 Butte no exact location. 1420 Comment
  CHSC101753  Drymocallis glandulosa var. glandulosa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  UC123311  Dryopteris arguta Mrs. R. M. Austin May 1883 79 Butte Big Chico Comment
  CHSC3244  Dudleya cymosa Virginia Hagaman 1966-4-17 118 Butte 6.3 miles east of Chico State College, on the side of road in Upper Bidwell Park above Salmon Hole. Comment
  CHSC28617  Dysphania ambrosioides M. S. Taylor 1979-10-5 2226 Butte SE side of Paradise Lake, ca. 1/2 mi n of Coutelenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC42960  Dysphania ambrosioides Lowell Ahart 1987-7-3 5755 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  CHSC38312  Dysphania pumilio Vernon Oswald 1983-6-13 675 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. Common around a refuse dump. 85 Comment
  CHSC105958  Echinochloa colona Lowell Ahart 2010-9-24 17236 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
  JEPS114772  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CAS-BOT-BC197101  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  CDA187  Echinochloa crus-galli f. longiseta C. Dunshee 1925-1 Butte Rice Station, Biggs. 0 Comment
  RSA777517  Echinochloa oryzicola L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  HSC104030  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte About 1 mi. NW of Biggs, ~ 500 yds. W of Riceton Highway, on the south side of Biggs Princeton Rd. 27 Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  JEPS124225  Elatine californica Lowell Ahart 2015-3-31 19984 Butte About 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  CHSC30983  Elatine rubella M. S. Taylor 1978-7-22 1850 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC78285  Eleocharis acicularis Lowell Ahart 2000-7-11 8576 Butte Pond edges, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  HSC97770  Eleocharis acicularis L. Ahart 2000-10-2 8699 Butte N of large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 mi. SW of Chico 32 Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC55612  Eleocharis bella L. P. Janeway 1987-6-19 2251 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC46300  Eleocharis coloradoensis Vernon Oswald 1989-5-23 3781 Butte Gray Lodge Wildlife Area, in the field se of the intersection of Rutherford Rd and the road to Parking Areas 12 and 13. 19 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC95100  Eleocharis decumbens L. P. Janeway; S. Galen Smith 2006-7-27 8822 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  JEPS98563  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  CHSC33150  Eleocharis montevidensis L. Ahart 1978-7-15 1786 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  SEINET7586858 Image available Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  CHSC38907  Eleocharis parishii Vernon Oswald 1983-4-9 299 Butte Upper Bidwell Park, Chico, on the north slope ca. 800 ft w of the power lines and 1000 ft n of Upper Park Rd. 115 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC55616  Eleocharis parishii C. A. Janeway 1986-10-25 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  SEINET9770291 Image available Eleocharis quadrangulata Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  SEINET7587005 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte West of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 404 Comment
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC116025  Eleocharis radicans Lowell Ahart 2015-10-20 20567 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
  SEINET9084534  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  JEPS98722  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SEINET3450856  Eleocharis rostellata Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10224 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Ohio 120 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC33852  Elymus X hansenii J. D. Jokerst 1981-5-21 1328 Butte Along road. Pulga RD ca 1/0 mi NE of it's jct with Hwy 70. Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  JEPS119860  Elymus glaucus subsp. glaucus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico. Comment
  CHSC34035  Elymus stebbinsii subsp. septentrionalis L. Ahart 1981-7-7 2928 Butte Hillside, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  UC591542  Elymus trachycaulus H. F. Copeland 1935-7-25 Butte Jonesville Comment
  CHSC28562  Elytrigia intermedia subsp. barbulata M. S. Taylor 1978-7-21 1835 Butte Big Bald Rock. Ca. 2 mi w of Lake Madrone. 997 Comment
  CHSC10547  Enemion occidentale Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC32668  Enemion occidentale M. S. Taylor 1981-3-24 3448 Butte S side of Hwy 70, ca. 100 ft w of Poe Dam, ca. 1/2 e of Pulga. Comment
  CHSC45420  Enemion occidentale Lowell Ahart 1973-2-28 156 Butte Along the south side of Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north-east of Bangor. 304 Comment
  JEPS119635  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC12075  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-17 58 Butte Found growing on embankment along Hwy. 70, ca. 4.1 mi. w. of Bear Creek Falls, in the Feather River Canyon. 762 Comment
  CHSC28539  Epilobium canum subsp. latifolium M. S. Taylor; J. D. Jokerst 1979-10-13 2249 Butte N side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC31783  Epilobium canum subsp. latifolium L. Ahart 1978-10-8 1818 Butte On the bank of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC51004  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-7-15 6562 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC75291  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte Along a drain ditch in a pasture field, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC20111  Epilobium minutum M. S. Taylor 1975-5-9 571 Butte Ca. 50 ft e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC23422  Epilobium minutum T. Rinker 1974-4-30 29 Butte On side of canyon ca. 40 yds n of Cohasset Rd., ca. 7.9 mi ne of Chico Municipal Airport. 518 Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  JEPS34387  Epilobium minutum Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8863 Butte above side road off U.S. highway 40 (at n base of grade over Jarbo Gap and just before bridge across Feather River, 0.75 mi s of Pulga); Canyon of N. Fk. Feather River 426 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  CAS-BOT-BC57992  Equisetum arvense John Thomas Howell 1961-9-22 36717 Butte Bank of Feather River, Oroville. 53 Comment
  RSA4627  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  SBBG28789  Equisetum hyemale E. B. Copeland 1929-7-6 Butte Jonesville Comment
  JEPS110236  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 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
  JEPS120178  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SFV11560  Equisetum hyemale subsp. affine M. L. Vincent 1963-6-10 422 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC46324  Equisetum laevigatum Lowell Ahart 1989-5-28 6288 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  JEPS113719  Eragrostis cilianensis Lowell Ahart 2007-7-2 14243 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  CHSC112336  Eragrostis hypnoides Lowell Ahart 2013-7-9 18828 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 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
  CAS-BOT-BC292432  Eragrostis pectinacea Lowell Ahart 1984-8-19 4790 Butte About 5 miles SW of Oroville.Area where gravel is removed, N of the state burrow area, W of Pacific Heights Road. 40 Comment
  CHSC51039  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-8-15 6585 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC278513  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  UC203852  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte near the base Table Mountain (8 mi n of Oroville) Comment
  JEPS117433  Eremocarpus setiger Lowell Ahart 2010-9-12 17148 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
  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
  CAS-BOT-BC168361  Eremogone ferrisiae Lowell Ahart 1980-9-10 2636 Butte 3 miles north-east of Milsap Bar - Sierra Nevada 1100 Comment
  CHSC110404  Erigeron canadensis Lowell Ahart 2012-9-28 18456 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC54174  Erigeron foliosus var. hartwegii Vernon H. Oswald; Lowell Ahart 1991-5-31 4637 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion pool, at the drainage on the northeast side of Sycamore Hill. 76 Comment
  RSA699540  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Rocky canyon edge of Humboldt Trail N of Bloody Pin Trail junction 412 Comment
  SEINET10474626  Erigeron inornatus var. viscidulus Mary Susan Taylor 1981-6-19 Taylor 3962 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC85443  Erigeron petrophilus var. sierrensis R. D. Fischer; Jenny Marr 2003-11-23 14 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  UCD169454  Eriochloa acuminata var. acuminata Lowell Ahart 2004-9-14 11400 Butte East part of Palermo, on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road. 57 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CHSC23446  Eriogonum luteolum var. luteolum K. R. Stern 1974-6-30 5769 Butte Serpentine outcrop, Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  UCR111229  Eriogonum luteolum var. luteolum H. Dearing, M. Dearing 1938-6-21 2044 Butte 15 mi north of Chico on lava ridge 268 Comment
  CHSC30847  Eriogonum nudum var. oblongifolium M. S. Taylor 1980-9-19 3339 Butte On edge of large serpentine area at jct of Coutelenc Rd and the Skyway, Magalia. 670 Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC39141  Eriogonum nudum var. pubiflorum R. A. Schlising 1981-6-22 4106 Butte Lumpkin Ridge, e of village of Feather Falls. 1280 Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC117339  Eriogonum umbellatum var. ahartii L. P. Janeway 2016-8-8 12144 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  JEPS94934  Eriogonum umbellatum var. ahartii Vernon Oswald and Lowell Ahart 1997-9-9 8857 Butte 0.7 air mi nw of Sawmill Peak Lookout (ne of Magalia near the gravel pit on Jordan Hill Road, 1.4 mi e of the Whiskey Flat Bridge over the West Fork of Feather River) 719 Comment
  SEINET10479572  Eriogonum umbellatum var. polyanthum Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5113 Butte About 8 miles north-east of Feather Falls. Comment
  CAS-BOT-BC262209  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  CAS-BOT-BC262213  Eriogonum ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  UCD101521  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of Feather River. 182 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CHSC4710  Eriophyllum lanatum var. grandiflorum R. Carter 1966-7-10 470 Butte Found Feather R. Canyon 4.4 mi. W of Butte Co. line along W side of Hwy. 70. 609 Comment
  CHSC90927  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  POM312408  Eryngium articulatum Verne Grant, Herbert L. Mason 1946-9-4 13103 Butte Colusa Gun Club Comment
  UC1551929  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico (1/4 mi S of Pentz Road, 1/8 mi E of Hwy. 99) 55 Comment
  UCD127596  Eryngium castrense B. F. Smith 1969-4-15 93 Butte 2 miles south of Oroville. 74 Comment
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  SEINET5342641  Erysimum capitatum var. capitatum R. T. Short 1961-4-11 s.n. Butte 18 miles east of Oroville, Calif. on US 40 alternate. 579 Comment
  CHSC42870  Erythranthe bicolor Lowell Ahart 1987-5-11 5615 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC31868  Erythranthe geniculata L. Ahart 1974-5-14 453 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24153  Erythranthe glaucescens B. Bunge 1976-4-20 16 Butte Ca. 100 yd s of Skyway, ca 5 mi ese of Chico. 213 Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC87424  Erythranthe glaucescens R. D. Fischer 2004-3-20 114 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along drainage on Guardian Trail. UTM: 10609595E 4405947N. 384 Comment
  CHSC44742  Erythranthe guttata R. Banchero 1980-4-9 100 Butte Top of Table Mountain, ca 0.3 mi W of Cherokee Rd. 384 Comment
  CHSC52137  Erythranthe guttata Charmaine Rust 1980-4-18 17 Butte 1.7 mi e of the water hole on Cherokee Rd. 75 yds n of road along side a small creek. 609 Comment
  CHSC20117  Erythranthe microphylla M. S. Taylor 1975-4-26 534 Butte SE corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC90826  Erythranthe microphylla Lowell Ahart 2005-5-2 11781 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
  CHSC27064  Erythranthe nasuta Lowell Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45025  Erythranthe nasuta Cathy Young 1988-4-23 10 Butte 1/4 mi w of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC41292  Erythranthe primuloides S. C. Morey 1983-7-21 503 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  SEINET10469659  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3512 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC79870  Erythronium multiscapideum Leanna Brown 1999-4-27 71 Butte Eastern shore of Paradise Lake. 753 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  CAS-BOT-BC504539  Erythronium multiscapideum M. S. Taylor 1981-3-18 3422 Butte Around and w of bridge crossing West Branch of Feather River on Ponderosa Way (Jordan Hill Rd), both banks 579 Comment
  CHSC1195  Eschscholzia lobbii R. Carter 1964-3-23 61 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 1/2 mi. E of Rd. along rim of table. 60 Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  CAS-BOT-BC419499  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  UCSB63594  Eschscholzia lobbii Cederborg, Mark 1995-4-18 Butte Ca. 200 yds w of Cherokee Rd; ca. 6 mi n of Oroville; Oroville U.S.G.S. Quadrangle; 15'. Ne 1/4 Sect 17. T20.R4E 390 Comment
  CHSC3644  Eucalyptus tereticornis Alice L. Stoll 1966-3-5 47 Butte Lower Bidwell Park between freeway and Manzanita Ave., Chico, along roadside. Comment
  CAS-BOT-BC312029  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  SEINET10841031  Euphorbia glyptosperma Mary Susan Taylor 1980-6-29 Taylor 2988 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
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  CDA34255  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC112688  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC88159  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  SEINET10507967  Festuca subulata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4107 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
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  JEPS115276  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
  CAS-BOT-BC62905  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10753 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC62938  Frangula californica subsp. tomentella P. Monnet 1913-3-1 6631 Butte Feather River Canyon. Comment
  CAS-BOT-BC62941  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11882 Butte Canyon of Chico creek 5 mi. e. of Chico. This type was collected 50 mi. to the s., probably along the Bear River. Comment
  CHSC1084  Fraxinus dipetala M. Roberson 1956-5-2 Butte S.W. of Paradise, along the Skyway. 426 Comment
  UC1123350  Fraxinus dipetala J. E. Sowder 1933-8-4 127 Butte above de Sable Power House; Chico Quad. 457 Comment
  POM76517  Fraxinus latifolia C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  SEINET10836847  Galium Mary Susan Taylor 1975-3-10 Taylor 405 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  UCD80738  Galium aparine CNPS SN Foothill Team 2005-3-30 SNFN 0028 b Butte CDFG, North Table Mountain Wildlife Area. 369 Comment
  POM68690  Galium aparine var. echinospermum C. C. Bruce 1897-06 1955 Butte Chico. Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  UC426970  Galium grayanum E. B. Copeland 1930-7-6 475 Butte above Jonesville 2000 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
  SEINET10968830  Galium nuttallii Mary Susan Taylor 1974-3-3 Taylor 70 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC111120  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte Southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC44427  Galium parisiense Lowell Ahart 1988-6-29 6091 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC78269  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS115614  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  JEPS119905  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte On the south side of the Humboldt Trail, about 100 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  JEPS126539  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC77996  Galium tricornutum Lowell Ahart 2000-5-13 8453 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  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
  POM193329  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  CHSC113472  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC51011  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte Near McCabe Creek, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS98530  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte on the SE side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) NE of Feather Falls. 1219 Comment
  CHSC64219  Galium triflorum S. C. Morey 1983-7-23 584 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  LA40341  Garrya fremontii E. B. Copeland; 1932-7-27 667 Butte Jonesville 502 Comment
  SEINET5765228  Garrya fremontii J. T. Howell 1975-6-15 51082 Butte 2 miles from paradise on 'Skyway' to Chico. 396 Comment
  CDA2169  Gastridium phleoides L. Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CHSC93483  Gastridium phleoides Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC73415  Gaultheria ovatifolia B. Castro; L. Gehrung 1995-6-20 577 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in N-trending ravine S of sharp bend in USFS Rd 22N24. 1173 Comment
  CDA43074  Gaura L. P. Janeway, B. Castro 2011-6-5 10361 Butte Sacramento Valley.; Chico; Northeast side of Hwy 99 just southeast of Cohasset Road overcrossing; Arroyo Chico. 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
  CHSC44216  Gayophytum humile V. Oswald; L. Ahart 1988-7-13 3571 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 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
  CHSC38492  Genista monspessulana Vernon Oswald 1983-5-2 407 Butte Upper Bidwell Park, Chico, between Chico Creek and the lawn of Hooker Oak Recreation Area. 80 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
  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
  CHSC62557  Gentianopsis simplex B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 157 Butte Meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  CDA5617  Geranium dissectum L. Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  CHSC35699  Geranium dissectum J. D. Jokerst 1982-5-1 1555 Butte North Table Mountain. Locally abundant in ephernal seep ca. 200 Met E of Phantom Falls (at the N fork of Coal Cr. canyon). Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UCD103321  Geranium dissectum H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  SEINET10496736  Gilia capillaris Lowell Ahart 1985-7-9 Ahart 5105 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  SEINET12331839  Gilia capillaris Unknown 1985-1 5105 Butte 1 mi S of the Ponderosa Dam across the South Fork of the Feather River, about 3 mi NW of Forbestown 1585 Comment
  JEPS113185  Gilia capitata subsp. mediomontana Lowell Ahart 2007-5-29 13920 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 by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 704 Comment
  UC134005  Gilia capitata subsp. mediomontana Mrs. R. M. Austin 1899-7-1 833 Butte Colby Comment
  CHSC41370  Gilia capitata subsp. pedemontana R. A. Schlising 1980-6-2 3621 Butte N of village of Forest Ranch, along Highway 32. 1005 Comment
  SEINET10902889  Gilia capitata subsp. pedemontana Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4164 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  HSC45825  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  HSC32409  Gilia tricolor Dave Knorr 1974-4-20 134 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC21741  Githopsis pulchella Robert A. Schlising 1964-6-11 2723 Butte Few miles south of Paradise along Honeyrun Road. Comment
  UCD80199  Githopsis pulchella CNPS SN Foothill Team 2005-5-26 SNFN 0171 a Butte City of Chico, Upper Bidwell Park. The plot was accessed from Highway 32 on the east side of the park, located off of Humboldt Trail, approximately 100 m after the trail begins to descend from the top of the plateau. 402 Comment
  CHSC185  Githopsis pulchella subsp. campestris M. Roberson 1956-4-9 Butte Near Paradise along Skyway. 548 Comment
  CHSC186  Githopsis pulchella subsp. campestris M. Diven 1930-5-15 Butte Humboldt Rd. east of Chico. 243 Comment
  CHSC44275  Githopsis pulchella subsp. campestris Vernon Oswald 1988-6-14 3381 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 Comment
  SEINET10460576  Githopsis pulchella subsp. campestris Diven 1930-5-15 DIVEN s.n. Butte Humboldt Road east of Chico 244 Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  SEINET10906067  Githopsis specularioides Deaton 1976-4-23 DEATON 36 Butte 10 ft. down south side of Feather Falls trail, about 1 7/8 miles north of Falls parking lot 853 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS124255  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC78223  Glyceria declinata Lowell Ahart 2000-5-21 8377 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  CHSC28640  Gnaphalium palustre M. S. Taylor 1978-9-9 1911 A Butte W side of Bull Run Rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  CHSC44903  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC46926  Gnaphalium palustre Lowell Ahart 1974-5-31 461 Butte Small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10938047  Gnaphalium palustre Mary Susan Taylor 1978-9-9 Taylor 1911 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  JEPS118067  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC8118  Grindelia hirsutula var. davyi J. G. Moore 1969-5-17 81 Butte 20 yds. e of Cohasset Rd., directly across from entrance to Chico Municipal Airport, Chico. 60 Comment
  CHSC11863  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  JEPS105605  Hamamelis vernalis L. P. Janeway, John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek 299 Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  CHSC33215  Heliotropium curassavicum R. E. Preston 1981-6-19 98 Butte Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. At side of road near edge of water, on levee, ca. 100 m w of Headquarters. 20 Comment
  CHSC38280  Heliotropium europaeum Vernon Oswald 1983-10-8 1055 Butte Upper Bidwell Park, Chico, along the n-w edge of the parking lot at the Horse Arena. 79 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
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC111160  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. 62 Comment
  CHSC84037  Helminthotheca echioides Lowell Ahart 2003-6-16 10285 Butte On both sides of Wickman Road, about 100 yards south of Richvale West Road, about 1 3/4 miles west of Richvale. 29 Comment
  CAS-BOT-BC314993  Hemizonella minima Javier Penalosa 1962-6-18 2479 Butte Near confluence of French and Peavine Crks. 640 Comment
  CHSC38361  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1983-7-28 939 Butte Upper Bidwell Park, Chico, ca. 200 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  RSA755000  Herniaria hirsuta subsp. hirsuta L. Ahart 2008-5-21 14772 Butte Lake Oroville, north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC46922  Hesperevax caulescens Lowell Ahart 1962-5-11 7 Butte Open pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS108885  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut 45 Comment
  CHSC60104  Hesperolinon californicum B. Castro; L. P. Janeway 1992-5-9 449 Butte In bottom of unnamed canyon SE of Neal Road in dark, deeply cracking clay in grassland phase of surrounding Foothill Woodland community. 70 Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC115191  Heterocodon rariflorum Lowell Ahart 2015-4-27 20081 Butte On the bottom of the stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along the Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  CHSC84408  Heterocodon rariflorum Lowell Ahart 2003-7-30 10460 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  POM59067  Heterocodon rariflorum Kate Konger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 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
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  CHSC43243  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  UCD16139  Heuchera micrantha var. pacifica Maura Cullinane 1983-5-29 24 Butte California. Butte County: take Forest Hill Rd. ramp and go east off I 80 to Mosquito Ridge Rd., drive 13.5 mi. Site #7. 1066 Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CHSC51354  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-7 4354 Butte Near the south end of Butte Creek Trail, ca. 2.25 mi east of Forest Ranch, ca. 1 mi northwest of De Sabla. 548 Comment
  OBI69218  Hirschfeldia incana Kari Fisher 2000-10-7 5 Butte Lindo Channel, 100 ft from E First Street 82 Comment
  CHSC43670  Hoita macrostachya Vernon Oswald 1983-6-14 685 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  CHSC48569  Hoita macrostachya Vernon Oswald 1987-7-20 3141 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi w of the dam for Crouch Ditch. 79 Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  CHSC25485  Hoita orbicularis L. Ahart 1977-6-17 1428 Butte Growing along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. Comment
  CHSC94342  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA0112643  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  CHSC34043  Holodiscus discolor L. Ahart 1981-7-7 2931 Butte Near a small dry stream, near the dirt rd to the Forbestown Reservoir, 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  CHSC34036  Holozonia filipes L. Ahart 1981-7-7 2914 Butte On bottom of a small dry stream bed, ca. 1 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  SEINET10966308  Hookera coronaria A. Arthur Heller 1913-6-4 Heller 107 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC65907  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald 1996-4-20 7398 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 the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET10598969  Hordeum geniculatum Lowell Ahart 1982-4-29 Ahart 3397 Butte On dry soil in low area grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Very common. 35 Comment
  CAS-BOT-BC285089  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2121 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC2155  Hordeum vulgare H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. of Chico. 60 Comment
  CDA25942  Horkelia californica subsp. dissita L. Ahart 1998-6-3 8012 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC536587  Horkelia californica var. elata John Thomas Howell 1975-7-21 51334 Butte Sierra Nevada. North Branch Feather River 304 Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  SBBG128726  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte seeps, SE edge of large open bare granite area, ca. 3.8 mi NE of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 974 Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  CDA31947  Hypochaeris glabra L. Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  JEPS114712  Hypochaeris glabra Lowell Ahart 2008-5-21 14767 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  SEINET10473839  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3570 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
  CHSC45691  Hypochaeris radicata Vernon Oswald; Lowell Ahart 1987-8-5 3176 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  JEPS43465  Iris chrysophylla Joan O. Danielson 1966-4-6 17 Butte Oregon Gulch Road 609 Comment
  CAS-BOT-BC133566  Iris hartwegii E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville 701 Comment
  CAS-BOT-BC69971  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC81194  Isoetes howellii J. Trizzino 2001-4-25 58 Butte Oro-Chico Highway, 0.25 mi west of Neal Road, wet ditch on north side of road. 54 Comment
  JEPS120930  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 2.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC116645  Isoetes nuttallii Lowell Ahart 2016-4-15 f 20743 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC39965  Jensia rammii L. Ahart; P. Ahart 1983-6-26 4157 Butte Along Ponderosa Way (Big Ridge Road), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. 600 Comment
  CHSC14176  Juglans californica var. hindsii B. L. Siercks 1974-4-21 4 Butte Located 100 m n of Durham Rd. 1/4 mi w of rr tracks. 60 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  JEPS114885  Juncus acuminatus Lowell Ahart 2008-5-30 14802 Butte Dry to damp bare granite soil, along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  CDA37167  Juncus bufonius CDFA Staff 2010-6-7 s.n. Butte Palermo Road and Highway 70. 0 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
  CHSC78327  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-norhing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS114373  Juncus bufonius var. bufonius Lowell Ahart 2008-5-2 14707 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 Comment
  JEPS122033  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS98590  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  CHSC90947  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 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
  CHSC47538  Juncus capitatus Lowell Ahart 1974-4-24 430 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC6706  Juncus capitatus Marilyn Lee 1968-4-19 128 Butte West side of Cherokee Road ca 2 miles S. of Cherokee, 100 yards S.E. of cemetary, Table Mt. Comment
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  CHSC112461  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  UCD141428  Juncus cyperoides L. Ahart 1982-6-1 3527 Butte east side of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 2000 Comment
  JEPS118054  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  SEINET5716466 Image available Juncus effusus Lowell Ahart 1985-1 5086 Butte About 2.5 mi. NE of Forbestown. 10 yds. S of dirt rd. to the Forbes town Res.; Forbestown 869 Comment
  CHSC111289  Juncus effusus subsp. effusus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16758 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin road; UTM 10 655439 east, 4387540 north, +/- 49 feet (NAD83). Comment
  CHSC99750  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  CHSC69728  Juncus ensifolius Lowell Ahart 1997-10-20 7928 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  UC1609084  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte about 1/2 mi s of Quartz Hill (tracks of a logging road) 1219 Comment
  CHSC28792  Juncus howellii J. D. Jokerst; M. S. Taylor 1979-7-21 304 Butte Humboldt Summit, Humboldt Road, N.E. corner of Butte Co. Comment
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC107567  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  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
  JEPS110148  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  RSA337381  Juncus leiospermus var. leiospermus L. Ahart 1984-5-7 4589 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  CHSC49628  Juncus occidentalis Vernon Oswald 1984-7-31 1635 Butte Scotts John Creek, 0.9 mi n of 26N27. Near the creek. 1786 Comment
  CHSC105531  Juncus orthophyllus Lowell Ahart 2010-9-21 17217 Butte On damp bare soil, open meadow like area in red fir forest, near a poor camp, 30 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
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  CHSC100489  Juncus patens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15418 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC40352  Juncus tenuis Lowell Ahart 1985-7-24 5154 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles northeast of Forbestown. 350 Comment
  SEINET10472342  Juncus tenuis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4734 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
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 Comment
  JEPS98725  Juncus triformis Lowell Ahart 2000-6-27 8529 Butte N side of Bean Creek Road, 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air mi NE of Madrone Lake, 13 air mi NE of Oroville 1066 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  SEINET10971394  Juncus uncialis Lowell Ahart 1983-4-10 Ahart 3931 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 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
  RSA727521  Juncus usitatus L. Ahart 2007-7-31 14401 Butte On the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  CHSC39977  Keckiella lemmonii L. Ahart; P. Ahart 1983-7-24 4209 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC110352  Kickxia elatine B. Castro 2006-8-10 1596 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 at dirt road crossing the canal. 35 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
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC26744  Kyhosia bolanderi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1469 Butte Meadows, around Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CDA20618  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilatatum, 282 Chico Rd, Oroville. 0 Comment
  JEPS104644  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  JEPS115713  Lactuca scariola var. integrata Lowell Ahart 2009-8-3 16251 Butte On the east side of Ten Mile House Road, just northeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10872060  Lactuca scariola var. integrata Mary Susan Taylor 1979-11-11 Taylor 2280 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC102720  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC38367  Lactuca serriola Vernon Oswald 1983-6-27 774 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  SEINET9775665 Image available Lactuca serriola Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC340532  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  CAS-BOT-BC340534  Lactuca serriola John Thomas Howell 1975-6-15 51061 Butte Chico 60 Comment
  SEINET5709525 Image available Laennecia coulteri Grady L. Webster, G. Ledyard Stebbins 1967-1 7532 Butte Rancho Llano Seco, near end of west arm of Eddy Lake.; Eddy Lake Comment
  CHSC108176  Lagophylla glandulosa L. P. Janeway 2011-8-17 10658 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850 m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CHSC30751  Lagophylla glandulosa M. S. Taylor 1980-8-30 3322 Butte Along creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  JEPS104647  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  CAS-BOT-BC341299  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC41773  Lamium amplexicaule Lowell Ahart 1986-11-7 5420 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  UCD80079  Lasthenia fremontii CNPS SN Foothill Team 2005-5-4 SNFN 0200 c Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  HSC66353  Lasthenia fremontii M. S. Taylor 1980-3-28 2400 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CHSC38495  Lathyrus latifolius Vernon Oswald 1983-5-23 532 Butte Upper Bidwell Park, Chico, on the N side of Chico Creek at Bear Hole (1.0 mi E of the power lines). 109 Comment
  UC1562445  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte about 2 air mi se Jarbo Gap (near the Poe Power House, on the e side of the Feather River) 274 Comment
  UCD169101  Lathyrus odoratus Ramona Robison 2013-4-15 2 Butte Clay Pit State Vehicular Recreation Area. 41 Comment
  CAS-BOT-BC213292  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC82700  Lathyrus tingitanus Tara Morgan 2002-5-7 56 Butte Was seen in the Feather River Canyon just east of Highway 70 near the West Branch Bridge of the West Branch Feather River/Lake Oroville. It was all around the edges of the rest area parking . 318 Comment
  JEPS117248  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  CHSC25280  Lavandula officinalis K. R. Stern 1977-6-25 Butte Comment
  SEINET10474773  Layia fremontii Mary Susan Taylor 1974-4-24 Taylor 190 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC34086  Lemna minor J. D. Jokerst 1981-3-29 1271 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  CAS-BOT-BC89699  Lepidium latifolium Lowell Ahart 1981-9-10 3143 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC48336  Lepidium perfoliatum Vernon Oswald 1985-5-8 1748 Butte In Parking Lot #15 w of the Headquarters at Graylodge Waterfowl Management Area. Comment
  CHSC38144  Lepidium strictum J. D. Jokerst 1983-5-12 1755 Butte Table Mountain. Along the dirt road that goes due north of Cherokee Rd at its intersection with the easy edge of the mesa. 426 Comment
  CDA2225  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise Comment
  CHSC32132  Leptosiphon androsaceus L. Ahart 1976-4-7 1036 Butte Hillside near the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28735  Lessingia nana Robert Schlising 1979-10-4 3492 Butte Old archery range in Bidwell Park, Chico, just e of lake. Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  CHSC31447  Lessingia nemaclada L. Ahart 1980-9-10 2643 Butte Along the edge of the rd ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC38376  Lessingia nemaclada Vernon Oswald 1983-10-2 1050 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  CHSC52001  Lessingia virgata B. Castro 1987-9-25 227 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  HSC5936  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi. W of Oroville. 46 Comment
  UCD169079  Lessingia virgata Ramona Robison 2013-4-15 12 Butte Clay Pit State Vehicular Recreation Area, located two miles west of the town of Oroville. 41 Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  SEINET12332637  Leucophysalis nana L. P. Janeway, Schlising, R. A. 1988-1 2918 Butte just NW of Summit Lake 1951 Comment
  CHSC11356  Lewisia rediviva Lowell Ahart 1971-4-10 Butte Table Mountain, Oroville. 457 Comment
  UC1031359  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte top of Table Mountain Table Mountain Comment
  CHSC27186  Ligustrum japonicum P. Moyer; R. Pessner 1971-10-1 22 Butte CSUC Campus. N bank Chico Ck., along So-wil-len-no Ave. 60 Comment
  CAS-BOT-BC130567  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC48596  Limnanthes alba subsp. alba Vernon Oswald 1988-5-17 3311 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  CHSC48595  Limnanthes alba subsp. versicolor Vernon Oswald 1985-4-23 1718 Butte Humbug Rd. 1.3 mi sw of its jct. with Nimshew Rd. 579 Comment
  UCSB63634  Limnanthes douglasii O'Connor-Henry, K. 1985-4-19 Butte North Table Mtn., ca. 500 yd. w of Cherokee Rd. and 4.5 mi. n of Oroville 365 Comment
  SEINET10870241  Limnanthes douglasii var. rosea Mary Susan Taylor 1976-3-23 Taylor 1030 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC53968  Limnanthes floccosa subsp. floccosa Vernon H. Oswald 1991-4-24 4531 Butte Hwy 99 between Broyles Rd and Hamilton Nord Cana Hwy, north of Chico. Along drainages of the west side of Hwy 99. 59 Comment
  UC1748334  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte ca. 150 m W of Cohasset Rd., ca. 1/6 mi S of jct. with Keefer Rd. Comment
  CHSC112601  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  UCD169097  Limosella aquatica Ramona Robison 2013-4-16 14 Butte Clay Pit State Vehicular Recreation Area, located in pools within Clay Pit SVRA. 41 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  RSA769681  Linanthus bicolor L. Ahart 2009-4-22 15585 Butte Along Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  SD7464  Linanthus dichotomus Mrs. R. M. Austin 1883-1 Butte Butter Co., Calif Comment
  POM74160  Linanthus dichotomus subsp. meridianus Mrs. R. M. Austin 1883-05 20 Butte [No locality information provided] Comment
  CHSC42324  Linanthus pungens R. M. Austin 1896-7-1 109 Butte Mountains-near Colby. Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  CHSC97400  Lindernia dubia var. anagallidea Robert Fischer 2006-6-18 1006 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CAS-BOT-BC416395  Linnaea borealis subsp. longiflora Duncan Dunning 1922-7-18 6 Butte Lassen Forest, Flea Valley 1219 Comment
  CHSC112204  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, southwest of the dredge pond, west of the barn, about 3 1/4 miles (air) northeast of Honcut. 45 Comment
  SEINET12186146  Linum lewisii Unknown 1985-1 4993 Butte 1/8 mi E of the dirt rd, about 1.5 mi NE of Concow of Reservoir 732 Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  JEPS98349  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte 12 air miles SW of Chico (E edge of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry. 2 mi SE of Ordbend) 32 Comment
  CHSC78547  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  CHSC39966  Lithocarpus densiflorus L. Ahart; P. Ahart 1983-7-24 4203 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 550 Comment
  CAS-BOT-BC430884  Lithophragma bolanderi Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC430882  Lithophragma bolanderi Lowell Ahart 1982-5-8 3421 Butte At the Forbestown Res. 700 Comment
  POM219578  Lithophragma bolanderi H. F. Copeland 1923-3-16 47 Butte [Unspecified] Comment
  CAS-BOT-BC432271  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CHSC65435  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1988-3-22 3261 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CHSC65436  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 170 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  RSA176430  Lithophragma parviflorum var. trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek E of Chico near the Honey Run grade bridge. Comment
  CAS-BOT-BC428450  Lithophragma trifoliatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CAS-BOT-BC316347  Lithospermum californicum A. A. Heller 1918-5-5 s.n. Butte Near Magalia. Comment
  CHSC23721  Lobularia maritima L. V. Ritter 1969-4-12 144 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  CHSC38049  Lobularia maritima R. E. Preston 1983-1-14 378 A Butte Collected from the planter on First St, on S side of Kendall Hall, campus of C.S.U., Chico. Comment
  JEPS105681  Logfia filaginoides L. P. Janeway and John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada; E side of Middle Fork Feather River arm of Lake Oroville, 1.0 km SW of mouth of Frey Creek 299 Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  SEINET10591941  Lolium multiflorum Madsen 1970-4-5 Madsen 28 Butte On N side of creek, ca 300 yards N of Honeyrun Road, 1.5 miles NE of Covered Bridge at intersection of Humbug and Honeyrun Roads, E of Chico. Soil of valley adobe overlying rocks. Associate: Avena fatua. 229 Comment
  CAS-BOT-BC271208  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  SEINET10454503  Lomatium marginatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4098 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
  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
  SEINET10906779  Lomatium utriculatum Mary Susan Taylor 1982-5-2 Taylor 4392 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
  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
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC109121  Lonicera hispidula Lowell Ahart 2012-2-22 17739 Butte On the high east bank of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  UCD80204  Lonicera interrupta CNPS SN Foothill Team 2005-5-5 SNFN 0158 b Butte City of Chico, Upper Bidwell Park, Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  RSA31964  Lotus argophyllus var. fremontii A. A. Heller 1940-6-5 15699 Butte Along the Feather River between the bridge and the mouth of the West Branch of the North Fork. Comment
  JEPS115583  Lotus corniculatus Lowell Ahart 2009-5-23 15748 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  RSA253373  Lotus grandiflorus var. macranthus A. A. Heller 1938-5-28 15125 Butte On the Feather River Highway 25 miles from Oroville. Comment
  JEPS43471  Lotus humistratus Joan O. Danielson 1966-4-6 23 Butte just s Oregon Gulch Road (Cherokee Road) Comment
  RSA21306  Lotus humistratus Carl B. Wolf 1937-5-13 8651 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 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
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS55747  Lotus purshianus var. purshianus Harry A. Dutton 1921-1 Butte Chico Comment
  SEINET3729652  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  JEPS34381  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1963-5-14 8857 Butte about 2 mi above and e Butte Creek Canyon beginning at jct with Paradise Skyway (along Humbug Road, bottom of Butte Creek Canyon); Butte Creek Canyon 91 Comment
  UCD65988  Ludwigia hexapetala B. J. Grewell; Steve Cordes 2005-9-27 05- 23 -LU Butte Upper Butte Wildlife Area, Llano Seco Unit, California Dept. of Fish and Game. 1521 acre wetland area, near intersection of Seven Mile Lane and Nelson Road. 32 Comment
  JEPS98690  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  CHSC84888  Lupinus affinis R. D. Fischer; Jenny Marr 2003-4-29 4 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  SEINET11268145  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.; 0 610 Comment
  CHSC33148  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-6 1305 Butte SE of and adjacent to Detlot Road ca 1/3 mi SE of its western most junction with Hwy 70. 670 Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  SEINET10452618  Lupinus albifrons Mary Susan Taylor 1981-4-5 Taylor 3480 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  CAS-BOT-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  HSC32403  Lupinus bicolor Kitsy Kelly 1974-4-20 22 Butte Table Mtn. Volcanic area Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  UCD107158  Lupinus bicolor J. Doty 1969-4-1 621 Butte on east side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CHSC35320  Lupinus bicolor var. pipersmithii M. S. Taylor; K. Tharp 1982-4-8 4291 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC90921  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 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
  CHSC109180  Lupinus bicolor var. tridentatus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 Butte On the north side of Big Chico Creek, south side of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10452071  Lupinus densiflorus Mary Susan Taylor 1976-4-27 Taylor 1097 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10937081  Lupinus densiflorus var. lacteus Emmrich 1975-5-2 EMMRICH 33 Butte Pentz rd. Ca. 1/4 Mi. W of intersection with hwy 70. Common along roadsides, Open areas of foothill woodland. Assoc: lupinus. Comment
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  CHSC48532  Lupinus latifolius var. columbianus Vernon Oswald 1987-6-29 3037 Butte Jones Meadow Rd. e of Inskip, 0.3 mi w of the intersection of the turn to Jones Meadow. 1706 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  UCD108994  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade. Comment
  CHSC3936  Lupinus nanus var. apricus Ann Dolder 1967-4-8 Butte In the foothills, ca. 300 yds ne of road of Table Mt. 6 1/2 miles from Oroville. 335 Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  CHSC93460  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  CHSC48536  Lupinus obtusilobus Vernon Oswald; Lowell Ahart 1987-7-1 3069 Butte Humbug Rd. 0.3 mi w of Butte Creek, ca. 2 mi (air) ese of Jonesville. 1755 Comment
  UC392209  Lupinus polyphyllus var. burkei E. B. Copeland 1929-7-28 Butte along Butte Creek (Jonesville); , along Butte Creek 1500 Comment
  CHSC24642  Lupinus stiversii S. Deaton 1976-4-14 24 Butte E bank of Feather Falls trail ca. 3 1/2 mi n of Falls parking lot. 944 Comment
  HSC66333  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Blad Rock Rd., 1 mi. E of Lake Madrone 671 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  HSC23497  Lupinus vallicola L. E. Dunkel 1965-3-2 2 Butte .5 mi. SW of Municipal Golf Course building, Chico 61 Comment
  POM276281  Lupinus vallicola subsp. apricus Lyman D. Benson 1935-3-27 6363 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC31951  Luzula cascadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-7-16 848 Butte Chico Meadows, Scout Rd 1.1 miles N of its jct with the Skyway and Humboldt Rd. 1341 Comment
  SEINET10472541  Luzula cascadensis Mary Susan Taylor 1978-7-18 Taylor 1719 A Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  CHSC109082  Luzula macrantha Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CHSC29251  Luzula macrantha M. S. Taylor 1976-4-24 1076 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
  CHSC61354  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS118064  Luzula parviflora Lowell Ahart 2011-8-19 17642 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  SEINET10498039  Lycopus americanus Lowell Ahart 1984-8-19 Ahart 4783 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UCD124961  Lycopus asper E. M. Johnston 1915-1 W 136 J Butte Biggs. Comment
  CDA18879  Lythrum hyssopifolia Riley 2000-7-7 PDR 1170755 Butte behind County of Butte Agricultural Commissioner's office, 316 Nelson Ave., Oroville. 0 Comment
  JEPS117541  Lythrum hyssopifolia Lowell Ahart 2010-6-9 16780 Butte On the east side of vernal pool full of dodder, about 30 yards south of the poor dirt road, about 60 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  JEPS120718  Lythrum portula Lowell Ahart 2013-10-16 19112 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CHSC112044  Lythrum salicaria Lowell Ahart 2012-8-22 18422 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC97205  Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CDA5124  Lythrum salicaria L. Ahart 2000-7-2 8551 Butte On the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. Comment
  CHSC54342  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  CHSC44272  Madia citrigracilis Vernon Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga. 512 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  UCD80090  Madia elegans CNPS SN Foothill Team 2005-5-5 SNFN 0158 e Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  UCR188503  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  CHSC43621  Madia exigua Vernon Oswald 1984-5-23 1200 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  JEPS117317  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  RSA718336  Madia exigua L. Ahart 2006-6-9 12650 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  CAS-BOT-BC344319  Madia exigua Lowell Ahart 1988-6-23 6068 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CAS-BOT-BC343278  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  CHSC11829  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  CHSC78235  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  UC1442609  Madia subspicata Lowell Ahart 1978-7-15 Butte near North Honcut Creek; Honcut, Peter Ahart Ranch 50 Comment
  CHSC6010  Magnolia grandiflora M. MacArthur 1968-6-19 251 Butte Front Lawn Administration Building, Chico State College. 60 Comment
  CAS-BOT-BC510730  Maianthemum racemosum subsp. amplexicaule H. F. Copeland 1916-11-29 1236 Butte Woods near Butte Creek. Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CAS-BOT-BC347380  Malacothrix floccifera John Thomas Howell 1951-6-26 27516 Butte Big Bend Mt. 609 Comment
  JEPS115578  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC109095  Malva parviflora Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC44978  Marah fabacea J. Witzman 1987-3-7 6 Butte Along Butte Creek nr Humbug Rd. ca 3 mi n of jct with Skyway, se of Chico. 97 Comment
  UC196260  Marah fabacea A. A. Heller 1914-3-12 11193 Butte Canyon of Big Chico Creek 76 Comment
  CAS-BOT-BC67813  Marsilea vestita Lowell Ahart 1981-8-31 3059 Butte Sierra Nevada - Wyandotte Lake, E of Oroville 450 Comment
  CAS-BOT-BC67816  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC42751  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  HSC95531  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte 100 yards E of Parking lot 10, Gray Lodge State Wildlife Management Area, about 4 mi. SW of Gridley 23 Comment
  CHSC2825  Matricaria discoidea David Prall 1965-4-25 Butte Humbug Road 0.3 miles west of junction of Honey Run Rd. (covered bridge). Roadside. 198 Comment
  CAS-BOT-BC422643  Meconella californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CHSC38515  Medicago arabica Vernon Oswald 1983-5-2 419 Butte Upper Bidwell Park, Chico, beside the dirt road which leads to the Police Pistol Range on the s edge of the Golf Course. 91 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
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC110952  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the well-developed steep un-official trail +-under the upper powerlines, connecting Upper Trail to North Rim Trail. 189 Comment
  CHSC32123  Medicago praecox L. Ahart 1977-5-2 1344 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CDA13255  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13103 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC69122  Melica aristata Lowell Ahart 1997-8-1 7804 Butte On the south side of County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  JEPS103561  Melica aristata Lowell Ahart 2002-6-21 9745 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  RSA718385  Melica aristata L. Ahart 2006-6-24 12861 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  RSA718395  Melica bulbosa L. Ahart 2006-7-16 13009 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UCD87136  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia. 731 Comment
  CHSC51952  Melica californica var. nevadensis T. B. Devine 1980-4-28 722 Butte On Cherokee Rd ca 1.5 mi S of jct of Hwy 70, ca 1/2 mi S of Cherokee. Comment
  RSA718332  Melica harfordii L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CHSC36356  Melica subulata J. D. Jokerst; R. A. Schlising 1982-6-4 1589 Butte Meadow at headwaters of Concow Cr., south of and adjacent to Flea Valley. 1097 Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  CHSC30544  Melica torreyana J. D. Jokerst 1980-3-23 490 Butte Along edges of old Cherokee Flume. 0.5 mi W of S end of Bridge on Hwy 70 over W Branch of Feather River. 10 mi N of Oroville. Comment
  CHSC42926  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  SEINET10599678  Melica torreyana Lowell Ahart 1989-5-10 Ahart 6221 Butte About 1/10 mile north-west of the West branch Bridge across Lake Oroville. Foothill Woodland. Common, growing on dry red rocky soil along a dirt road near a small stream near the lake. 290 Comment
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CDA4211  Melilotus officinalis L. Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC43844  Mentha canadensis B. Castro 1987-8-25 207 Butte At s edge of Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC94031  Mentha pulegium R. D. Fischer 2005-7-18 736 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants growing in moist meadow at edge of Big Chico Creek riparian near upper end of park property. 213 Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC61217  Micranthes californica Vernon H. Oswald; Lowell Ahart 1993-3-24 5237 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  CAS-BOT-BC429038  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CHSC41285  Micranthes oregana S. C. Morey 1983-7-21 504 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  CAS-BOT-BC348318  Micropus californicus Lowell Ahart 1983-6-12 4043 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  RSA113229  Micropus californicus E. K. Balls, L. W. Lenz 1965-5-13 20693 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC348463  Micropus californicus var. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham 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
  SEINET10473428  Microseris Mary Susan Taylor 1981-5-7 Taylor 3639 Butte T20N R6E nw sec 36, Forbestown quad. S side of 20N24.8, ca. 3 mi S of Feather Falls community. Yellow Pine Forest; 2200 ft. 670 Comment
  CAS-BOT-BC349165  Microseris elegans Lowell Ahart 1979-5-21 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10475169  Microseris linearifolia Mary Susan Taylor 1986-5-6 Taylor 5613 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  POM35006  Microseris nutans C. C. Bruce 1898-05 2462 Butte Doe mill Comment
  CHSC31663  Microseris sylvatica L. Ahart 1979-4-19 1831 Butte Fields near Douglas Oaks. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC11954  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville. By Butte Creek. 1500 Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC44329  Microsteris gracilis Lowell Ahart 1988-3-28 5956 Butte Near the dirt road to Sugar Pine Point, about 1/8 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC44330  Microsteris gracilis Lowell Ahart 1988-3-27 5936 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET12326954  Microsteris gracilis Unknown 1981-1 23 Butte 8 km SE of Chico and 8 km NW of Paradise 125 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
  UCD122319  Mimulus aurantiacus var. grandiflorus J. I. Mallory 1968-5-29 288 Butte 3/4 mile northwest of Union Hill. 579 Comment
  CDA14055  Mimulus bicolor G. F. Hrusa, T. D. Wilfred 1997-5-1 13702 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 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
  UCD96099  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel North of Centennial Ave. 80 Comment
  UC1012165  Mimulus guttatus F. W. Pennell and H. L. Mason 1940-6-5 25681 a Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  UC886186  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  JEPS117136  Mimulus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 304 Comment
  SEINET10570237  Mimulus kelloggii Mary Susan Taylor 1980-4-18 Taylor 2501 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET10962493  Mimulus kelloggii Mary Susan Taylor 1978-5-6 Taylor 1574 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC94622  Mimulus moschatus Lowell Ahart 2006-9-11 13294 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
  POM273162  Mimulus moschatus Lyman Benson 1932-7-28 3964 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  RSA4114  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC103741  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 373 Comment
  CHSC61721  Minuartia cismontana Mark D. Reiser 1992-4-17 17 Butte Meadow ca. yds sw of Vilas Rd., Cohasset Stage, ca. 8 mi ne of Chico Municipal Airport. 609 Comment
  CAS-BOT-BC388611  Minuartia douglasii John Thomas Howell 1967-6-22 42616 Butte Magalia 701 Comment
  CHSC62724  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte Serpentine ridge, south of Serpentine Point and above Hwy. 70. 518 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
  CAS-BOT-BC433045  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC77986  Moehringia macrophylla Lowell Ahart 2000-5-10 8336 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CHSC49835  Moenchia erecta Vernon Oswald; Lowell Ahart 1990-4-9 4159 Butte Oak Grove Cemetery ca. 0.6 mi se of Hurlton, ca. 10 mi w of Forbestown. Several hundred feet east of the cemetery. 542 Comment
  CHSC77985  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte In weeds and on the edge of the south side of the dirt road, south side of the Oak Grove Cemetery, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 Comment
  CDA3371  Mollugo verticillata L. Ahart 2002-10-17 9983 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS103455  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  SEINET10866406  Mollugo verticillata Mary Susan Taylor 1980-6-29 Taylor 2995 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
  SEINET10899215  Mollugo verticillata Mary Susan Taylor 1978-9-8 Taylor 1884 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET6646079 Image available Mollugo verticillata Lowell Ahart 1984-1 4787 Butte West of Pacific Heights Raod, about 5 miles South-west of Oroville 40 Comment
  UC519258  Monardella odoratissima subsp. glauca H. F. Copeland 1930-7-20 Butte Jonesville Comment
  JEPS105012  Monardella odoratissima subsp. pallida Dean W. Taylor 1995-8-6 15386 Butte Rocky Ridge, north end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest; Northern Sierra Nevada 975 Comment
  UC525858  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 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
  CDA2665  Monochoria vaginalis T. C. Fuller 1959-10-2 3140 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CDA2666  Monochoria vaginalis T. C. Fuller 1976-7-8 20150 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  RSA125169  Monolopia major Hartweg 1847-4-13 1789 Butte Sacramento [probably Sacramento Valley, ca. 55 miles north of Yuba City, near Oroville] Comment
  CHSC34085  Montia chamissoi C. Glascock 1965-5-15 418 Butte Butte Meadows public campground 0.5 mi. W of Humboldt-Scout Rd. intersection. 26.1 mi ne of Chico city limits. Comment
  CHSC61211  Montia fontana subsp. amporitana Vernon H. Oswald; Lowell Ahart 1993-3-24 5244 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  SEINET11933619  Montia fontana subsp. chondrosperma M. S. Taylor, Oswald, V. 1984-1 5384 Butte S side Humbug Rd., ca 6 mi NE of Honey Run Covered Bridge, ca 10 air mi NE of Chico 372 Comment
  CHSC70812  Montia linearis B. Castro 1995-5-18 571 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  CHSC39428  Muhlenbergia filiformis L. Ahart 1983-8-16 4305 Butte Near Bull Hill Road, ca. 3 miles south of Butte Meadows. 1450 Comment
  CHSC47698  Muhlenbergia filiformis Lowell Ahart 1989-9-21 6395 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS98275  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 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
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  UC398889  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  SEINET7294640 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC103438  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 215 Comment
  CHSC31725  Muhlenbergia rigens L. Ahart 1974-9-30 638 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA5314  Myriophyllum spicatum L. Ahart 2001-6-3 8749 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  UC2026884  Myrtus communis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18226 Butte North side of paved park road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  UCD150362  Najas guadalupensis subsp. guadalupensis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  CHSC25049  Nassella pulchra L. Morgan 1972-4-29 1 Butte Near Upper Bidwell Park Rd. on the corner of Archery Range exit road. 60 Comment
  CHSC35662  Nassella pulchra R. E. Preston 1982-4-22 250 Butte In saddle of ridge ca. 0.3 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 353 Comment
  UC196281  Navarretia divaricata A. A. Heller 1914-6-22 11499 Butte edge of forest about Chico Meadows Chico Meadows 1219 Comment
  JEPS108740  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
  POM74736  Navarretia filicaulis C. C. Bruce 1898-05 2432 Butte [No locality information provided] Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  RSA717294  Navarretia heterandra L. Ahart 2005-5-28 11823 Butte 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
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  CHSC34988  Navarretia intertexta R. A. Schlising 1979-6-4 3437 Butte S of Cohasset off of Cohasset Highway. Comment
  CHSC101836  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15754 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  UCD37442  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte Butte County, 10 miles southeast of central Chico. Comment
  CAS-BOT-BC233618  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte Near Pents 152 Comment
  CAS-BOT-BC233622  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-14 5477 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC233624  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  UC856892  Navarretia tagetina Lewis S. Rose 1939-6-5 39197 Butte Honcut 30 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
  CHSC46821  Nemacladus capillaris R. A. Schlising 1981-6-16 4089 Butte E of Cohasset, 2.3 mi E of junction with Cohasset Road, on Vilas Road. 762 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
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  CHSC101664  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  POM65386  Nemophila menziesii var. menziesii Winifred Paine 1902-3-29 s.n. Butte Chico. Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  UC107250  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. 53 Comment
  UCSC009427  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte 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
  RSA3786  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  CHSC6627  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  RSA0060137  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte Near the SW edge of the Golf Course, along trail form the end of Centennial Ave. to the foot bridge across Big Chico Creek, Bidwell Park. 91 Comment
  UCD14585  Notholithocarpus densiflorus Robert Willoghby 1985-12-17 s.n. Butte California, Butte Co.; Forbestown, ca. 2-3 miles northwest of Challenge Station (by air), on the Kenneth Haddick property (ca. 150 acres with old homestead, some pasture and cows, but largely Pinus ponderosa and Pseudotsuga menziesii timberland), Comment
  CDA14775  Nymphaea odorata G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3379 Butte Madrone Lake (Berry Creek). 600 Comment
  CHSC29728  Odontostomum hartwegii J. D. Jokerst 1980-4-21 622 Butte Top of North Table Mt., N of Cherokee Rd. 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
  CHSC27798  Orobanche fasciculata Lisa Sedlacek 1978-4-25 17 Butte Collected on Cohasset Rd. 4 mi n of Rock Creek Rd. and 1/2 mi e. 548 Comment
  POM252787  Orthocarpus campestris A. A. Heller 1938-5-13 15078 Butte On US Highway 99E near the Y east of Richvale. Topotype. Comment
  CHSC50846  Orthocarpus cuspidatus subsp. cryptanthus Vernon Oswald 1990-7-23 4384 Butte Opening in forest at the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd at Humbug Summit. 2011 Comment
  POM298005  Orthocarpus erianthus A. A. Heller 1913-4-6 10717 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  RSA31738  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  RSA3785  Orthocarpus erianthus A. A. Heller 1926-3-22 13910 Butte East of Chico near the Hooker Oak, Comment
  RSA590215  Orthocarpus erianthus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7224 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET12318340  Orthocarpus erianthus S. C. Morey 1978-1 14 Butte Hwy 32, ca 9.1 mi E of junction with Hwy 99 at Chico 523 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  POM125853  Oryza sativa Donahoe 1923-10 s.n. Butte Llano Seco Ranch, Chico. Comment
  UC1562354  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail ca 0.4 mi n trailhead (ca 2 mi n of town of Feather Falls) 701 Comment
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  SEINET10454518  Osmorhiza chilensis Mary Susan Taylor 1980-5-27 Taylor 2650 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
  SEINET10454522  Osmorhiza chilensis Mary Susan Taylor 1980-7-6 Taylor 3082 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  RSA289967  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte Lattemore portion of California Rice Experiment Station, between Biggs and Richvale. Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  JEPS115575  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS43151  Oxalis corniculata Mrs. R. M. Austin May 1896 204 Butte e Chico (Butte Creek) Comment
  CHSC99653  Oxalis oregana H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396794N. 57 Comment
  CHSC41310  Oxypolis occidentalis S. C. Morey 1983-7-22 546 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42644  Oxypolis occidentalis Vernon Oswald 1983-8-4 950 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  SEINET10454532  Oxypolis occidentalis Mary Susan Taylor 1977-7-15 Taylor 1407 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  LA203913  Packera subnuda var. subnuda E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CDA13265  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1996-7-9 13113 Butte Plumas National Forest; Uncommon perennial on moist edge of Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Forest dense, diverse here. Comment
  CHSC31630  Panicum acuminatum var. acuminatum L. Ahart 1974-6-24 500 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  RSA29937  Panicum capillare I. L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  CHSC5943  Parthenocissus tricuspidata var. veitchi M. MacArthur 1968-6-17 187 Butte On NW wall of Life Science bld., Chico State College campus. 60 Comment
  UC625524  Parvisedum pumilum Frank W. Gould 1938-4-23 306 Butte 2 mi n of Chico (along road) 60 Comment
  CHSC6744  Paspalum dilatatum V. Hagaman 1968-6-1 581 Butte Corner of 2nd street and Chestnut, Chico. Comment
  CHSC73765  Paxistima myrsinites B. Castro 1997-6-13 737 Butte Mtn House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road, in depression by creek. 1051 Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 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
  CHSC9726  Penstemon azureus Nancy Mosman 1971-7-11 95 Butte Along w side of Hwy 70 ca. 21.7 mi s of Belden. 701 Comment
  UC1302274  Penstemon azureus var. angustissimus Richard M. Straw 1962-6-26 2193 Butte 5 mi n Bidwell Bar; n of Bidwell Bar 580 Comment
  UC1562446  Penstemon deustus Lowell Ahart 1990-6-1 6505 Butte about 2 air mi se Jarbo Gap (on the e side of the North Fork of the Feather River, near the Poe Power House); e side North Fork Feather River, se of Jarbo Gap 274 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC44725  Penstemon heterophyllus var. purdyi R. Banchero 1980-6-2 173 Butte Along Hwy 32 ca. 6.3 SW of the town of Forest Ranch. 524 Comment
  CHSC107592  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC1873  Penstemon neotericus R. M. Staley 1952-7-4 Butte Butte Creek. Comment
  NY627284  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  UC600436  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte rocky point above hotel (Jonesville); Jonesville 1676 Comment
  CHSC110763  Penstemon personatus Dean Wm. Taylor; Bryan Waylan 2011-8-3 21139 Butte The Sierra Nevada. Logging road ca. 1 air mile North of Bald Mountain lookout (watershed Middle Fork Feather River). 1584 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  JEPS83779  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC3550  Pentagramma triangularis Gary Dutton 1966-2-21 37 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N. E. CSC. Comment
  CHSC27954  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi n of jct of north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC34243  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte Along Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC90139  Pentagramma triangularis subsp. triangularis C. J. Kalberg 1983-4-11 17 Butte Upper Bidwell Park, Chico, about 3.2 mi northeast of junction of Manzanita and Wildwood Ave., 500 yds north of Wildwood Ave. 243 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 Comment
  CHSC60947  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC195447  Perideridia bolanderi subsp. involucrata A. A. Heller 1914-7-13 11572 Butte on volcanic hills 5 mi e Oroville Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  JEPS12431  Perideridia kelloggii W. S. Wilkinson 1921-7-16 Butte Chico Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC25435  Perideridia parishii subsp. latifolia Hayes; Warner 1977-9-11 73 Butte Ca. 10 m n of Humboldt Rd., Ca. 6.9 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CHSC45466  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte On the sides of a deep wash, about 1/4 mile south-east of Stirling City. 1097 Comment
  CHSC45379  Persicaria hydropiperoides Vernon Oswald 1983-10-10 1063 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. Growing in shallow water along the edges of Tyler Slough at the Indian Fishery located at the jct. of W. Sacramento Ave. and River Rd. Comment
  CHSC116293  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC101117  Petrorhagia dubia Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96551  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  HSC32618  Petrorhagia dubia Dave Knorr 1974-4-20 118 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  HSC32619  Petrorhagia dubia David Johnson 1974-4-20 27 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  CHSC6003  Petunia M. MacArthur 1968-6-19 245 Butte In flr. bed ca. 20 ft. SE of main entrance to Administration bld., Chico State College. 60 Comment
  RSA133602  Phacelia corymbosa L. R. Heckard, J. R. Sweeney 1953-4-27 347 Butte About 2.5 miles below (southwest of) Pulga, along Feather River Highway. 488 Comment
  SEINET12326938  Phacelia heterophylla Unknown 1980-1 18 Butte ca .75 mi E of Oroville Quincy Highway, 10 ft S of Lumpkin Rd 402 Comment
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  SEINET12329569  Phacelia imbricata L. Ahart, Ahart, P. 1984-1 4654 Butte along Hwy 40, now called Dark Canyon Rd, ca 2 mi E of Old Yankee Hill, 16 mi NE of Oroville 450 Comment
  SEINET8497834  Phacelia procera D. W. Taylor 2006-7-13 19566 Butte Sky High Mine, along Concow Road (watershed West Branch Feather River) 1737 Comment
  UC600783  Phacelia procera H. F. Copeland 1932-8-16 Butte woods by Butte Creek Jonesville 1500 Comment
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC110226  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CHSC97006  Phalaris brachystachys B. Castro; R. A. Schlising 2005-5-29 1478 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  JEPS87133  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC91099  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 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
  CHSC38676  Philadelphus lewisii Vernon Oswald 1983-5-27 562 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf course and the power lines. 121 Comment
  SEINET10482894  Philadelphus lewisii subsp. californicus Heidi H. Schmidt 1993-6-15 Schmidt 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC33856  Phleum pratense J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 849 Butte N of and adjacent to Scout Rd 1.1 mi W of its jct with Humboldt Rd in Chico Meadows. 1341 Comment
  UC436290  Phlox diffusa E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  JEPS21864  Phlox speciosa subsp. occidentalis Annette Waters 1958-4-19 227 Butte 2.5 mi e Lumpkin Road (on Oroville-Forbestown Road, en route to Oroville) Comment
  SEINET10969534  Phoradendron bolleanum subsp. densum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5396 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  CHSC11788  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  SEINET10492847  Phoradendron tomentosum subsp. macrophyllum Lowell Ahart 1983-3-27 Ahart 3904 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA691014  Phoradendron villosum L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Lahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4.5 miles east of Manzanita Avenue, Chico. 183 Comment
  UC1194602  Phoradendron villosum Del Wiens 1960-6-15 2726 Butte near Paradise 152 Comment
  CHSC1997  Phyla nodiflora var. rosea V. Holt 1935-9-1 Butte Dodge Lands. 30 Comment
  CHSC33216  Phyla nodiflora var. rosea R. E. Preston 1981-6-19 97 Butte On bank of canal, ca. 0.8 km s of Headquarters, Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  RSA746978  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  RSA769809  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 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
  CHSC29003  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte Just e of Chico. Ne corner of jct of Notre Dam Blvd and the Skyway, ca 1/8 mi of Hwy 99. 68 Comment
  CHSC46176  Pilularia americana Lowell Ahart 1978-5-15 1720 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10938354  Pilularia americana Lowell Ahart 1984-5-12 Ahart 4603 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  UCD136789  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte In Valley Grassland just E of Chico. NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 68 Comment
  UC398883  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  SEINET11739304  Pinus ponderosa Unknown 1982-1 2 Butte 0.5 km N of Magalia, 150 m. E of Skyway, 50 m W of Coultonlenic Rd 700 Comment
  CHSC77414  Pinus sabiniana Laura Bogni 1997-3-25 6 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC103965  Piperia elongata Lowell Ahart 2010-5-7 16618 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
  CHSC2445  Piperia transversa R. Carter 1965-7-6 275 Butte Found along E side of Oroville-Quincy R., 5.2 mi. N of Mountain House, ca. 5' from road. 1219 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
  CHSC115000  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  RSA32945  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte Near the Chico Airport. 91 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  CHSC108802  Plagiobothrys canescens Lowell Ahart 2012-4-9 17486 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC31580  Plagiobothrys canescens L. Ahart 1978-3-29 1621 Butte Peter Ahart Ranch, Honcut. In farmed field near a vernal pool near the old barn. 50 Comment
  CHSC46344  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-23 6238 Butte Along the edges of a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 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
  UC725292  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte along the road near Wick's Corner n Oroville Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC35054  Plagiobothrys leptocladus R. Schlising; R. Banchero 1981-4-20 4054 Butte NW of Oroville along Cottonwood Road, ca. 0.4 mile E of jct with Hwy 99. Roadside vernal pools. 41 Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  CHSC67186  Plagiobothrys scriptus James D. Jokerst 1989-4-8 3091 Butte North Table Mtn., N and adjacent to Cherokee Rd. at E edge of mesa. Roadside area next to metal corral. Comment
  CHSC104002  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, 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
  CHSC87205  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  CHSC87206  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10730 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  HSC97115  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-5-11 11807 Butte About 1 mi. S of Beatson Hollow, about 1 1/2 mi. SW the poor dirt road off of Cherokee Rd., S part of N Table Mtn., about 7 mi. N of Oroville 281 Comment
  JEPS117194  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  RSA0035820  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2008-6-13 14824 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC48343  Planodes virginica Vernon Oswald 1985-3-17 1685 Butte Peter Ahart Ranch ca. 1.5 mi n of Honcut. In pasture ca. 300 ft e of the home. 33 Comment
  CHSC108776  Plantago coronopus L. P. Janeway 2011-4-26 10238 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC47457  Plantago elongata Lowell Ahart 1974-4-7 341 Butte Growing on the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET3449642  Plantago elongata Unknown 2003-3-31 10027 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 300 yards west of Larkin Road, north side of the access road to the boat ramp at the Thermalito Afterbay 40 Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC109132  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  RSA0036649  Plantago erecta Lowell A. Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. 143 Comment
  UCD72996  Plantago erecta 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
  SBBG128463  Plantago erecta L. Ahart 2012-4-9 17851 Butte N side of S Rim Trail, W of the power lines, Upper Bidwell Park, ca. 1 mi NE of Chico 143 Comment
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  CAS-BOT-BC93157  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CHSC1991  Plectritis ciliosa M. Davidson 1929-3-23 Butte Chico Canyon bluffs. 152 Comment
  CHSC39940  Plectritis ciliosa Lowell Ahart 1984-4-3 4538 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  UC890146  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  CHSC40356  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte South of Willow Creek, about 100 meters south-west of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  CHSC71532  Pleuricospora fimbriolata Vernon H. Oswald 1998-7-26 9365 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. 1560 Comment
  SEINET10593437  Poa annua A. Arthur Heller 1914-3-28 Heller 11243 Butte Chico. Comment
  UCD80594  Poa annua CNPS SN Foothill Team 2005-3-31 SNFN 0073 d Butte CDFG North Table Mountain Wildlife Area, North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  SEINET10888236  Poa bolanderi A. Arthur Heller 1917-7-29 Heller 12868 Butte Summit above Jonexville in granite. In open forest of Abies magnifica. Undershrubs are Uva-ursi Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  JEPS87146  Poa cusickii subsp. epilis Lowell Ahart 1992-7-26 6862 Butte ca 2 air mi se Snow Mt (ca 1/4 mi ne of Carr Mine) 1798 Comment
  CAS-BOT-BC255786  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico in the Sacramento Valley Comment
  CDA14065  Poa pratensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13712 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common to dominant in wet meadow drained to N by serpentine outcrop, but not on serp. Perennial, rhizomatous. Comment
  CHSC34164  Poa pratensis L. Ahart 1981-9-15 3155 Butte On the sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC41282  Poa pratensis S. C. Morey 1983-7-21 501 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10508449  Poa pratensis Lowell Ahart 1983-5-13 Ahart 3985 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC94346  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS119850  Poa pratensis subsp. pratensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18240 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  CHSC8601  Poa secunda subsp. secunda M. Banning 1969-4-18 78 Butte Table Mt., 1/2 mi. from Ore. City junction, then approx. 1/4 mi. NW. 487 Comment
  HSC92567  Poa secunda subsp. secunda J. P. Smith, J. O. Sawyer 1973-4-14 6056 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC21271  Pogogyne douglasii M. S. Taylor 1975-4-29 538 Butte Ca. 100 yds s of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. Comment
  POM62748  Pogogyne douglasii A. A. Heller, H. E. Brown 1902-5-15 5553 Butte Near Biggs. Comment
  SEINET12319546  Pogogyne douglasii R. A. Schlising 1980-1 3589 Butte T23N R1W sec4, extreme N Butte County (Richardson Spgs. NW, 7.5' quad), * between Singer Creek and ? Comment
  CHSC14112  Polanisia dodecandra subsp. trachysperma F. T. Griggs 1974-8-8 143 Butte Growing on top of a sandbar in the Sacramento River, between Hamilton City Bridge and the mouth of Big Chico Creek. Comment
  CHSC33649  Polanisia dodecandra subsp. trachysperma M. Merryman; R. Banchero 1979-9-23 43 Butte SW of Chico, just e of Ord Ferry and Sacramento River. 30 Comment
  CHSC50659  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte On the south edge of Durham Highway, about 1 mile west of Highway 99, about 3 miles east of Durham. 60 Comment
  RSA4227  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC49836  Polycarpon tetraphyllum Vernon H. Oswald 1990-4-2 4142 Butte Bedrock Park on the e side of the Feather River in Oroville. Margin of a slough. 42 Comment
  CHSC28008  Polygala cornuta M. S. Taylor 1978-7-21 1798 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  JEPS115106  Polygonum arenastrum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC113440  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC103695  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom 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
  UC519233  Polygonum bidwelliae J. E. Sowder 1933-6-2 1412 Butte 3 mi n Clear Creek; Chico Quad. 274 Comment
  SEINET10479627  Polygonum bolanderi Lowell Ahart 1983-8-16 Ahart 4280 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC102160  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10937606  Polygonum hydropiperoides var. asperifolium Mary Susan Taylor 1978-9-8 Taylor 1883 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET11934432  Polygonum parryi L. Ahart, Ahart, P. 1984-1 4730 Butte About 1.5 mi SE of Bald Mountain, 3/4 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CAS-BOT-BC420993  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  SEINET10470877  Polypodium californicum Lowell Ahart 1983-3-28 Ahart 3911 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 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
  CHSC28504  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2254 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise, 426 Comment
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CAS-BOT-BC72028  Polypodium calirhiza M. Gregg 1966-3-7 37 Butte On Humbug Rd. at the covered bridge, approx. 9 miles from the CSC campus, hill directly behind the covered bridge Comment
  CHSC25492  Polypogon interruptus L. Ahart 1977-5-8 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC40006  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte On the low banks of North Honcut Creek. Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CHSC31722  Polypogon maritimus L. Ahart 1975-6-23 806 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC115371  Polypogon monspeliensis Lowell Ahart 2015-4-24 20059 Butte Small size plants, on dry bare soil, side (road edges) of a large duck field. 19 Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC94838  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House. 609 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
  CHSC33978  Polystichum munitum M. S. Taylor 1981-5-14 3708 Butte S side of 22N49 at jct where creek crosses the rd (next creek e of Little Ram Creek), ca. 1 mi sw of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi n of Mt House on Oroville-Quincy Hwy. 975 Comment
  CHSC6621  Populus M. MacArthur 1968-6-12 303 Butte SE yard of Building U, Chico State College Campus. 60 Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CHSC11798  Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  CHSC50559  Potentilla bruceae Vernon Oswald 1990-7-3 4342 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. Meadow. 1950 Comment
  SEINET3077020 Image available Potentilla flabellifolia Marc Mittleman 1980-8-1 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  SEINET10902805  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1975-6-25 Taylor 801 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC41286  Prunella vulgaris var. lanceolata S. C. Morey 1983-7-21 506 Butte Cherry Hill Meadow. On the n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA43085  Prunus cerasifera L. P. Janeway 2012-2-28 10786 Butte Northern Sierra Nevada Foothills.; Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. Comment
  CDA38804  Prunus dulcis L. P. Janeway 2012-3-6 10792 Butte Sacramento Valley; Southern edge of Chico; fence-line along west side of Hwy 99 just south of Estates Drive. Comment
  CHSC94091  Prunus subcordata R. Fischer 2005-3-20 682 Butte Chico. Collected from Bidwell Park off of Pine Trail ca. 1/4 mi downhill from hwy 32. Shrubs growing on brushy north facing slope with an overstory of Big Leaved Maple. 426 Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC88073  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CAS-BOT-BC357006  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1529 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in large creek, ca. 23 mi s of Chico 30 Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC25290  Pseudognaphalium thermale M. S. Taylor 1977-7-15 1419 Butte Along w branch of Feather River ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC26657  Pseudognaphalium thermale M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1500 Butte On e side of the Skyway, in Inskip. 1615 Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  CHSC11830  Psilocarphus oregonus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC27182  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  UC392203  Pyrola picta E. B. Copeland Jul 1929 Butte Jonesville 1600 Comment
  CHSC109223  Quercus X morehus B. Castro 2003-9-10 1461 Butte Ca. 15 mi NE of Oroville, on the slopes over the West Branch Feather Riber across from the Lime Saddle area on NW-facing slope along lower end of Nelson Bar Road, just below State Recreation Area boundary overhanging edge of road. 323 Comment
  CHSC51878  Quercus berberidifolia Mike Pahl 1988-4-19 16 Butte 14.2 mi NE of Chico on Cohasset Hwy and 0.3 mi SSW off the rd. 548 Comment
  CHSC6009  Quercus borealis M. MacArthur 1968-6-18 224 Butte Ca. 300 ft. NW of Big Chico Creek, by EP bld. entrance, Chico State College. 60 Comment
  CDA13880  Quercus chrysolepis var. chrysolepis G. F. Hrusa, T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada; Near summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. and Comment
  JEPS115840  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 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
  CAS-BOT-BC86633  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte Hills two miles N of Oroville Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  SEINET13953409 Image available Quercus garryana A. A. Heller 1915-1 11816 Butte Stony ridges and uplands in red clay near Cohasset, where it is the principal chaparral shrub near the upper limit of the dirger pine belt. Comment
  CHSC28520  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte At Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC36132  Quercus garryana var. breweri Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway, 3 mi w of Paradise. North of road ca. 15 m. 408 Comment
  CHSC7036  Quercus kelloggii Lynn R. Thomas 1969-4-18 108 Butte NW edge of Calif. 32, ca. 2 mi ne of Forest Ranch. 731 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  LA205379  Quercus vacciniifolia E. B. Copeland; 1931-8-14 626 Butte Jonesville 1500.0 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 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
  CHSC48696  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-26 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  CHSC45397  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-4-7 358 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA0036029  Ranunculus arvensis Lowell A. Ahart 2012-5-2 17961 Butte About 30 yards northeast of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 91 Comment
  SEINET12094429  Ranunculus bonariensis Unknown 1983-1 261 Butte SW of Bangor, T18N, R4E, sec. 36 73 Comment
  CHSC42050  Ranunculus canus Lowell Ahart 1986-4-4 5241 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  CHSC52949  Ranunculus canus D. Burk; A. Dawson, R. A. Schlising 1982-6-2 4284 Butte N of Oroville and n of Concow Reservoir at Flea Valley. Meadow at head of Concow Creek. 1097 Comment
  SEINET10535966  Ranunculus canus Mary Susan Taylor Taylor 989 Butte Bidwell Park, Chico. Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  SEINET10535975  Ranunculus hystriculus Mary Susan Taylor 1980-2-17 Taylor 2367 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  SD111905  Ranunculus muricatus Barbara Ertter, Jeff Strachan 1980-5-5 3262 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay banks of ditch 29 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  JEPS43466  Ranunculus occidentalis Joan O. Danielson 1966-4-6 6 Butte Cherokee Rd. 1 mi. s. on way to Table Mt. 609 Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. 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
  CHSC46847  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 254 Butte S part of county on Swedes Flat Rd. 335 Comment
  POM219014  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. 1550 Comment
  JEPS98680  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC31957  Raphanus raphanistrum J. D. Jokerst 1979-3-25 1157 A Butte At edge of Table Mountain, E edge of mountain N of Cherokee Rd. 396 Comment
  CHSC52197  Rhamnus ilicifolia L. P. Janeway 1989-5-19 3265 Butte Serpentine outcrop and open area near upper se'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  UC726401  Rhamnus purshiana A. A. Heller 1919-5-17 13157 Butte near Stirling; Feather River 975 Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CHSC61313  Rhododendron neoglandulosum Lowell Ahart 1993-7-29 7132 Butte Bog on the northside of the dirt road to big Kimshew Creek, about 1-1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  UCD117982  Rhododendron occidentale Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine creeks. 609 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
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  JEPS113701  Rhynchospora capitellata Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  CAS-BOT-BC169097  Ribes inerme var. inerme H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  SEINET10482951  Ribes roezlii Mary Susan Taylor 1978-9-9 Taylor 1915 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC84626  Robinia pseudoacacia Robert Katz 2002-4-23 Butte Located 50 ft from Hwy 32 5 miles west of Forest Ranch, at the 'Green Gate,' 5-10 ft on the southwest side. Comment
  CHSC101266  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC40444  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 5040 Butte About 15 feet below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. 274 Comment
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC112717  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 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
  CHSC23134  Rorippa nasturtium-aquaticum M. S. Taylor 1975-10-31 983 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, by the creek, ca. 12 mi s of Chico. 91 Comment
  CHSC38423  Rorippa nasturtium-aquaticum Vernon Oswald 1983-5-11 477 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. and 1400 ft e of Parking Area N (Salmon Hole). 182 Comment
  JEPS108924  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC110994  Rosa Lowell Ahart 2012-6-9 18181 Butte On the south side of the pond, east of the South Rim Trail, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 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
  JEPS99064  Rosa eglanteria Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) NE of Honcut, about 12 miles (air) SE of Oroville. 60 Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  UC1926782 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CAS-BOT-BC148253  Rosa woodsii var. ultramontana A. A. Heller 1928-7-10 14654 Butte Wet meadows at Butte Meadow in the yellow pine belt. Comment
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  CHSC76000  Rotala ramosior Lowell Ahart; Vernon H. Oswald 1999-8-13 8170 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET10483580  Rubus laciniatus Heidi H. Schmidt 1993-6-15 Schmidt 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC147199  Rubus parviflorus Clarence R. Quick 1952-7-1 52 -124 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  CAS-BOT-BC156610  Rubus ulmifolius John Thomas Howell 1975-6-15 51078 Butte Butte Creek near Chico 60 Comment
  CDA42870  Rubus ursinus L. Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  JEPS115188  Rumex acetosella Lowell Ahart 2009-6-19 15940 Butte On dry soil, open area north of a pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  JEPS95968  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UCD101106  Rumex conglomeratus W. R. Powell 1968-5-6 1480 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC33421  Rumex crispus R. A. Schlising 1981-6-14 4082 b 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
  CHSC39302  Rumex crispus Lowell Ahart 1983-6-26 4124 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10838759  Rumex crispus Mary Susan Taylor 1975-8-31 Taylor 876 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
  JEPS115724  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  CHSC52187  Rumex pulcher Pauleen Broyles 1987-5-21 1052 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  CHSC33276  Rupertia hallii R. A. Schlising; R. Banchero 1981-6-16 4087 Butte NE of Cohasset. 1109 Comment
  UCD77982  Rupertia hallii Robert E. Preston 2003-7-17 2161 Butte Ca. 1 mi SW of Butte Meadows, along both sides of The Skyway 1447 Comment
  CHSC116639  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte On both sides of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC55806  Sagittaria latifolia var. obtusa Vernon H. Oswald; Lowell Ahart 1991-8-28 4855 Butte Gravel road 0.5 mile south of Richvale East Rd, 0.25 mile west of Hwy 99 and the Thermalito Afterbay, on the north boundary of the Richvale Vernal Pools. 33 Comment
  UCD150366  Sagittaria montevidensis subsp. calycina William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  SBBG128459  Salix babylonica L. Ahart 2012-4-6 17804 Butte N side of Big Chico Crk, Lost Park in Bidwell Park; Chico 60 Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  RSA4404  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  CAS-BOT-BC107837  Salix gooddingii C. R. Ball 1916-6-15 2069 Butte On bank of Chico Creek, Chico Comment
  CHSC76835  Salix gooddingii L. P. Janeway 1999-11-15 6626 Butte Northern Sierra Nevada foothills. Within 40 ft below high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS119537  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte About 100 yards south of the intersection of South Rim Trail and and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC104077  Salix hindsiana Peter H. Raven 1953-5-9 5450 Butte 6.5 miles from Bangor on road to Oroville Comment
  CHSC50842  Salix jepsonii Vernon Oswald; Lowell Ahart 1990-7-19 4375 Butte Ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1950 Comment
  CHSC76836  Salix laevigata L. P. Janeway 1999-11-15 6625 Butte Northern Sierra Nevada foothills. Along high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  JEPS119596  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC42544  Salix melanopsis Lowell Ahart 1987-5-6 5539 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  UC446422  Salix scouleriana E. B. Copeland 1931-6-11 Butte Kirby's Meadow 1800 Comment
  SEINET5570446  Salvia sonomensis H. S. Gentry, S. Koch 1962-1 19776 Butte 1 mi. NE of Forest Ranch, along Rt. 32. 762 Comment
  CHSC21277  Sambucus mexicana M. S. Taylor 1974-4-30 198 Butte Scattered on E side of Cohasset Rd, ca. 7 mi N of Chico. 243 Comment
  CHSC38290  Sambucus mexicana Vernon Oswald 1983-5-15 497 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC4709  Sambucus mexicana R. Carter 1966-6-15 447 Butte One mi N of Bidwell Bar on Old Quincy Rd, ca. 9 mi. E of Oroville, growing along W side of road. 152 Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET10454566  Sanicula bipinnata Mary Susan Taylor 1980-2-23 Taylor 2320 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  JEPS113192  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir 637 Comment
  SEINET10454569  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4715 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC10541  Sanicula bipinnatifida var. flava Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  UCD117995  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  SEINET12217260  Saxifraga arguta L. P. Janeway, Schlising, R. A. 1988-1 3057 Butte at beginning of Coon Hollow Creek on SW slopes of Coon Hollow 1920 Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  CHSC3979  Scandix pecten-veneris E. P. Parreno 1967-4-10 Butte Ca. 400 yards upstream from Covered Bridge. Comment
  CHSC36552  Schoenoplectus acutus var. occidentalis L. Ahart 1982-7-10 3674 Butte On bottom of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 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
  CHSC56808  Scirpus diffusus L. P. Janeway 1987-6-8 2177 Butte 8.3 mi south of Bald Mountain via dirt road. 777 Comment
  CHSC38914  Scirpus microcarpus Vernon Oswald 1983-5-27 570 Butte Upper Bidwell Park, Chico, at the base of the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC56813  Scirpus microcarpus L. P. Janeway 1987-7-4 2414 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CDA2625  Scirpus mucronatus Margaret Bellue Aug 1947 Butte Afton Road, near Biggs. 0 Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  CHSC31903  Scutellaria siphocampyloides L. Ahart 1977-5-20 1387 Butte Peter Ahart Ranch, Honcut. On banks of North Honcut Creek. 50 Comment
  SEINET13947868 Image available Scutellaria siphocampyloides A. A. Heller 1927-1 14397 Butte Along Chico Creek E of Chico Comment
  CHSC38482  Scutellaria tuberosa Vernon Oswald 1983-3-14 183 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.8 mi e of the power lines. 350 Comment
  CHSC63968  Scutellaria tuberosa B. Castro; L. P. Janeway 1994-4-21 511 Butte On Watson Ridge, on S-trending ridge just S of USFS Rd 21N25A. 1054 Comment
  CHSC65572  Scutellaria tuberosa R. Banchero 1980-4-19 117 Butte Ca 1.5 air mi N of town of Feather Falls, ca 0.7 mi NE of Feather Falls (the falls), at the head of the trail on back side of Falls. 1036 Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  UC1609162  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1993-3-24 5240 Butte e side of Dry Creek Canyon (n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek, 2 mi n of Pentz Road) 274 Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  CHSC57368  Sedum spathulifolium Rebecca Hill 1990-4-17 16 Butte Vic. Covered Bridge S bank of Butte Ck., ca. 7 mi e of Chico. 121 Comment
  SBBG17106  Sedum spathulifolium M. Vincent 1962-4-18 211 Butte near Feather River at Hells Town Comment
  UC1410118  Sedum spathulifolium Elizabeth McClintock 1965-4-4 Butte canyon of the west fork of the North Ford of the Feather River canyon of the west fork North Ford Feather River 365 Comment
  SEINET10874358  Sedum stenopetalum subsp. radiatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CHSC28874  Selaginella hansenii M. S. Taylor 1980-2-24 2322 Butte On bluffs overlooking the waterfall on east branch of Mud Creek, ca. 1/2 mi upstream from the Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  SEINET10530436  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2346 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
  SEINET10530439  Selaginella hansenii Mary Susan Taylor 1980-4-6 Taylor 2448 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC28666  Selaginella wallacei J. D. Jokerst 1979-7-1 402 Butte Upper most rim rock S.E. of Big Chico Cr. 365 Comment
  CAS-BOT-BC363286  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  CHSC24645  Senecio integerrimus var. major S. Deaton 1976-4-23 38 Butte 20 ft sw of Feather Falls trail, ca. 1 3/4 mi n of Falls parking lot. 853 Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC101994  Senecio vulgaris J. M. Lund 1980-2-21 18 Butte Southwest corner of Esplanade and East Ave. approximately 200 ft west of the intersection within city limits. 76 Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  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
  CHSC100475  Sequoia sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15426 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  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
  CHSC117417  Setaria parviflora B. Castro 2008-7-15 1758 Butte Sacramento Vallye. 2 mi W of Hwy 99 and 1 mi SE of Richvale, at NE corner of Cherokee Canal and Richvale Hwy. At levee toe just up from rice field. 32 Comment
  CHSC45319  Setaria parviflora Vernon Oswald 1988-10-29 3722 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 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
  CHSC42922  Setaria pumila Lowell Ahart 1987-7-3 5768 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC12128  Sherardia arvensis J. M. Pitts 1972-4-15 110 Butte Ca 8 mi from Cherokeeon top of Table Mountain. 274 Comment
  JEPS87674  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA754578  Sherardia arvensis L. Ahart 2009-4-17 15547 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  SEINET10448358  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  SEINET7085242  Sidalcea asprella Steven R. Hill 2010-7-17 38553 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  CHSC3525  Sidalcea calycosa John Francis 1966-4-23 134 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  UC725427  Sidalcea calycosa A. A. Heller 1942-5-27 16479 Butte Clark Road , Clark Road (Clear Creek Schoolhouse) Comment
  HSC85994  Sidalcea calycosa subsp. calycosa J. Hunter 1986-3-30 38 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC37438  Sidalcea gigantea R. A. Schlising 1982-8-26 4374 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. 865 Comment
  CHSC34959  Sidalcea hirsuta R. A. Schlising 1981-5-3 4045 Butte N of Chico, slightly E of Highway 99; just N of Meridian Road. Comment
  CHSC58273  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  POM219179  Sidalcea oregana subsp. spicata H. F. Copeland 334 Butte Jonesville. 1524 Comment
  UCD116832  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 s.n. Butte Jonesville. Comment
  CAS-BOT-BC213187  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Uplands along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC384468  Silene antirrhina Lowell Ahart 1983-7-29 4243 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  CHSC61308  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte About 2 miles east of Bald Mountain, about 6 (air) miles north-east of Stirling City. 1524 Comment
  RSA3433  Silene californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET10537656  Silene californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4253 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
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CHSC42228  Silene laciniata subsp. californica Beth Chambers 1986-4-18 15 Butte N on Cohasset Rd., 13.8 mi from Eaton Rd., Chico. 853 Comment
  CHSC81483  Silene laciniata subsp. californica Julie Rose 2000-4-25 90 Butte 6.8 miles on Hwy 32 East to Green Gate. About a quarter mile down the trail. 365 Comment
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  SEINET4853170  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  UC177562  Silene occidentalis subsp. longistipitata H. M. Hall Jul 1914 9773 Butte Jonesville 1524 Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CAS-BOT-BC74929  Sinapis arvensis Lowell Ahart 1974-5-1 s.n. Butte About 2 miles east of Bangor. 500 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  CHSC2313  Smilax californica V. Holt 1935-5-18 Butte Fern Banks along Chico Creek. 91 Comment
  NY821111  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock creek 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
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  CAS-BOT-BC157482  Solanum umbelliferum R. R. Kehlor 1951-3-10 12 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  SEINET10474960  Soliva pterosperma Mary Susan Taylor 1980-4-6 Taylor 2440 A Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC63240  Sonchus oleraceus Lowell Ahart 1994-3-30 7280 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 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
  CHSC51955  Sparganium emersum subsp. emersum L. P. Janeway 1987-6-27 2350 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  SEINET10933086  Sparganium emersum var. multipedunculatum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 A 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
  CHSC20120  Spartium junceum M. S. Taylor 1975-4-26 524 Butte Scattered on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC84019  Spergula arvensis subsp. arvensis Lowell Ahart 2003-6-23 10307 Butte In a grain field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 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 a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  CHSC40005  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Found on bank of small wash, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC40788  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  CAS-BOT-BC390599  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville 450 Comment
  UC2026894  Spiraea Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC52700  Spiraea cantoniensis L. P. Janeway; B. Castro 1990-3-24 3657 Butte Campus of California State University, Chico. Near Big Chico Creek along path from Holt Hall to the bridge to Sylvester's Cafe-by-the-Creek. 57 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  CHSC112692  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC102516  Spiranthes porrifolia Lowell Ahart 2009-5-30 15961 Butte Along a small drainage west of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC42983  Stachys ajugoides var. rigida L. P. Janeway 1987-6-13 2202 Butte SE side of Concow Rd at Flea Valley, along Flea Valley Cr. 1127 Comment
  UC726522  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  JEPS108973  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  JEPS114740  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  POM183148  Stachys rigida subsp. rivularis H. F. Copeland 1930-7-26 1311 Butte Neighborhood of Jonesville, beside Bute Creek, near mouth of Scotch-John Creek. Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  CAS-BOT-BC175313  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  CHSC58902  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  POM161690  Stellaria longipes E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC26854  Stellaria longipes var. longipes M. S. Taylor; M. Hayes 1978-6-24 1655 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its juct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC105968  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, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC10641  Stellaria media Lowell Ahart 1968-3-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC395115  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the N Fork of the Feather River, a little N of the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  POM219119  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  UCD99356  Stellaria pallida Michael A. Vincent; Ethan H. Freid 1998-4-6 8123 Butte Table Mountain. Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS87514  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  CHSC61299  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET11991589  Streptanthus campestris Unknown 1983-1 4434 Butte ca 2.5 mi S of Stirling City 1100 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  CHSC52007  Streptanthus polygaloides L. P. Janeway 1988-7-2 2969 Butte Near the road to French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  JEPS106170  Streptanthus polygaloides Lowell Ahart 2004-6-22 11111 Butte On the west margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  UC1492815  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4176 Butte 3.7 mi n Magalia; Mosquito Creek Comment
  CAS-BOT-BC87517  Streptanthus tortuosus W. P. Vestal; A. G. Vestal 1947-4-30 s.n. Butte Table Mountain, northeast of Oroville. 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
  RSA718335  Streptanthus tortuosus L. Ahart 2006-6-9 12647 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC64153  Streptopus amplexifolius var. americanus Hal Durio 1994-7-7 Butte Plumas Nat. Forest. Old placer mining location. Flat along Pinkard Ck., 1 1/4 mile north of Lost Ck. Res., 1 mile west of Sly Ck. Reservoir. East of USFS Road 22N24. 1097 Comment
  SEINET10449572  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-5 Taylor 1122 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-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
  UCD40395  Symphoricarpos acutus Rodney Gale Myatt 1971-6-13 723 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC28511  Symphoricarpos albus var. laevigatus M. S. Taylor; J. D. Jokerst 1979-10-13 2266 Butte On Jordan Hill Rd (Ponderosa Way on some maps) at jct with Griffith Gulch, ca. 7.1 mi N of its jct with Concow Rd, ca. 2 mi SE of Magalia. 701 Comment
  CAS-BOT-BC234616  Symphoricarpos mollis A. A. Heller 1913-6-7 10802 Butte Near Stirling 1074 Comment
  CHSC48021  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1828 Comment
  RSA428888  Symphoricarpos mollis H. F. Copeland 1928-8-14 97 Butte Jonesville, near Jones Creek. 1524 Comment
  CHSC42993  Symphyotrichum bracteolatum Lowell Ahart 1987-7-3 5784 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC97690  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CHSC69674  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1989-8-29 3973 Butte Butte Creek near its junction with Colby and Willo