Search Results — 2000 specimen records retrieved (1606 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/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC88614  Abies concolor H. Gray 2003-6-3 Butte Plumas National Forest. Parking Lot, Bald Rock Trail. 792 Comment
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  UC600416  Acer glabrum var. glabrum H. F. Copeland 1932-6-29 Butte at the summit Jonesville Comment
  CHSC26690  Acer glabrum var. torreyi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1491 Butte Scattered on N side of Scotts John Rd, ca. 1.4 mi S of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CAS-BOT-BC334156  Acer negundo var. californicum Lewis S. Rose 1937-6-10 37378 Butte 7 miles W of Honcut along Feather River 22 Comment
  UC138075  Acer negundo var. interior Mrs. R. M. Austin May 1896 804 Butte Sacramento River Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC109858  Achnatherum lemmonii var. lemmonii L. P. Janeway 2012-6-7 10869 Butte Northern High Sierra Nevada. Southwestern spur of Rocky ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC216466  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CDA13731  Achnatherum occidentale subsp. pubescens G. F. Hrusa, T. D. Wilfred 1997-6-27 13909 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Small colony in sandy-gravelly opening. Perennial, bunching. Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC34057  Acmispon americanus var. americanus L. Ahart; M. S. Taylor 1981-8-15 3033 Butte On the bottom of a small wash that runs into the n end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC78250  Acmispon americanus var. americanus Lowell Ahart 2000-6-27 8525 Butte 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
  CHSC94785  Acmispon americanus var. americanus Lowell Ahart 2006-10-8 13441 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  UCD103798  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11676 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC30730  Acmispon argophyllus var. fremontii M. S. Taylor 1980-5-27 2665 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 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
  CHSC74088  Acmispon grandiflorus var. macranthus B. Castro; E. Hubert 1996-7-16 683 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on SE-facing slope of recently burned area. 1188 Comment
  CHSC86139  Acmispon grandiflorus var. macranthus John Dittes 2002-6-29 627 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC31813  Acmispon parviflorus L. Ahart 1976-4-7 1034 Butte Near edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  UC398914  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC26741  Adenocaulon bicolor M. S. Taylor 1977-8-17 1466 Butte On edge of Montane Meadow, ca. 25 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1341 Comment
  CHSC44957  Adiantum jordanii Lance E. Neuman 1987-4-10 19 Butte Ca. 200 yd ne of Horseshoe Lake. 106 Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  CHSC87785  Aegilops triuncialis Brian Elliott; Linnea Hanson 2003-6-9 11635 Butte Plumas National Forest, about 2 miles west of the town of Feather Falls, and 4 miles north of Old Forbestown, on Forest Road 20N67. 731 Comment
  CHSC107098  Aesculus californica M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC11373  Aesculus californica Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8619  Aesculus californica L. V. Ritter 1969-5-5 303 Butte Ca 2 mi. w of Cohasset, ca 10 yds s of Cohasset Highway. Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC46609  Agoseris glauca var. monticola Vernon H. Oswald 1989-7-27 3898 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC38318  Agoseris grandiflora Vernon Oswald 1983-6-13 668 Butte Upper Bidwell Park, Chico, beside the road between Centennial Ave. and the Police Pistol Range. 91 Comment
  CHSC109559  Agoseris grandiflora var. leptophylla L. P. Janeway 2012-8-1 10916 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CAS-BOT-BC22819  Agoseris heterophylla var. cryptopleura Lowell Ahart; James Jokerst 1985-3-24 4866 Butte W of Lunt Rd, N of Yankee Hill, about 1/2 mi N of the intersection of Lunt Rd and Hwy 70. 550 Comment
  CHSC42393  Agoseris retrorsa Lowell Ahart 1977-4-28 1328 Butte Near Ponderosa Way, near the Ponderosa Dam, north-west of Forbestown. 365 Comment
  CHSC42473  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  CAS-BOT-BC162042  Agrostis Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10753212  Agrostis avenacea Lowell Ahart 1986-5-24 Ahart 5281 Butte On dry dark caly soil on the bottom of a large vernal pool, near the first gate to the Dean Ranch, about 1.2 mile N of the intersection of Mallott Road and Alf Road, about 2 miles NE of Sutter, Sutter Buttes 30 Comment
  CAS-BOT-BC127446  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 1066 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC127334  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Along bands of North Honcut Creek. Peter Ahart Ranch. Honcut. 50 Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC64250  Agrostis exarata S. C. Morey 1983-8-3 694 Butte Chico Meadows. On the e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC69732  Agrostis exarata Lowell Ahart 1997-10-20 7919 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  UC1563282  Agrostis exarata Lowell Ahart 1990-9-30 6608 Butte about 1/8 mi ne Canyon Creek Bridge across Lake Oroville (below the high water line of Lake Oroville); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC59036  Agrostis exarata var. exarata Lowell Ahart 1992-7-21 6810 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC139716  Agrostis gigantea M. S. Taylor 1978-7-21 1796 Butte Lake Madrone at its south junction with Oroville-Quincey Highway ca. 10 miles northeast of Oroville. 609 Comment
  CHSC40448  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 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
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  SEINET10968290  Agrostis microphylla var. hendersonii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4167 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC25441  Agrostis scabra Hayes; Warner 1977-9-11 84 Butte Along roadside between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  UCSB63780  Agrostis stolonifera Ahart, Lowell 1998-7-18 Butte SW of lone oak tree, W of cow chute on W side of Cherokee Rd; North Table Mtn, about 7 mi N of Oroville by air 403 Comment
  CHSC105685  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC38721  Ailanthus altissima Vernon Oswald 1983-5-22 528 Butte Upper Bidwell Park, Chico, along the edge of the parking area at the Horse Arena. 79 Comment
  CHSC101656  Aira caryophyllea Lowell Ahart 2009-4-26 15616 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 150 yards southwest of Ten Mile House Road, on south edge of a small open meadow.. 286 Comment
  CHSC36404  Aira caryophyllea Kirsten Tarp 1982-3-22 93 Butte 1 mi e of jct Hwy 149 and 99 on 149, ca. 13 mi se of Chico. 57 Comment
  HSC41092  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-4-14 6046 Butte Bruce Ln. between Humboldt Rd. and Skyway Rd., E of Chico Comment
  CDA43078  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley.; Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. Comment
  SEINET3449085  Alisma lanceolatum Unknown 2003-6-23 10303 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  CAS-BOT-BC460737  Allium amplectens Lowell Ahart 1980-6-19 2384 Butte Along Swedes Flat Road, near Bangor. Comment
  POM183414  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville. Comment
  RSA489568  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CAS-BOT-BC465444  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CHSC36948  Allium cratericola R. A. Schlising 1981-3-29 4010 Butte N of Oroville and Cherokee, off Hwy 70 on Lunt Road. 533 Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CHSC44518  Allium obtusum var. obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CAS-BOT-BC170916  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte Bottoms along Big Chico creek, E of Chico Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 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. 54 Comment
  CAS-BOT-BC138037  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1.5 mile north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC82268  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the east side of a canal, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UCD55881  Alopecurus carolinianus L. Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  CHSC8196  Alopecurus saccatus D. McClain 1969-4-18 59 Butte 1/2 mi. n.w. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  SEINET10507155  Alopecurus saccatus Lowell Ahart 1991-5-16 Ahart 6654 Butte On the bottom of a small shallow vernal pool, 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
  SEINET11665626  Alopecurus saccatus Unknown 1978-1 1705 Butte E of large parking area, on top of North Table Mountain, ca 7 mi N of Oroville 396 Comment
  CHSC40899  Amaranthus albus Lowell Ahart 1985-11-7 5228 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  UCD97152  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 miles north of Oroville. Comment
  CHSC116132  Amaranthus californicus Lowell Ahart 2015-11-7 20616 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC66894  Amaranthus deflexus Vernon H. Oswald 1996-10-12 8299 Butte Chico, Sewer Ponds on Chico River Rd., ca. 4.5 mi W of Chico. 41 Comment
  JEPS87520  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road); w of Butte Creek 48 Comment
  UCD97758  Amaranthus retroflexus L. E. Hazeltine 1916-7-21 Butte Chico. Comment
  SEINET10452827  Ammannia auriculata Mary Susan Taylor 1978-7-22 Taylor 1851 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CDA36693  Ammannia coccinea T. C. Fuller 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA718090  Ammannia robusta L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC61714  Amsinckia lycopsoides Scott Torricelli 1989-3-21 1 Butte On the N.E. corner of Humboldt Rd. and Forest Ave. Chico. 91 Comment
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  CHSC116985  Anagallis arvensis Lowell Ahart 2016-6-4 20937 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  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
  CHSC51349  Anaphalis margaritacea Vernon Oswald 1990-9-11 4450 Butte About 1.5 miles south-southeast of Brush Creek. 960 Comment
  JEPS95957  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico: T21N R2E SE1/4 NW1/4 Sect. 5, 230 ft, agricultural area. Localized weed growing in the NE corner of the intersection of farm roads directly S of the headquarters building. 70 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
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC30774  Angelica californica M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w from the Hwy down a dirt rd. 975 Comment
  CHSC101270  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC90945  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 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
  CHSC28500  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-7-22 2169 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge over Hwy 70, ca. 27 mi n of Oroville. 487 Comment
  CHSC39954  Antirrhinum vexillo-calyculatum subsp. intermedium L. Ahart; P. Ahart 1983-6-30 4174 Butte Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. 350 Comment
  CHSC12929  Aphyllon purpureum K. D. Cox 1974-4-5 186 Butte On banks of Lake Oroville, Lunt Ranch on Lunt Rd., off Hwy 70, N of Oroville. Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  CHSC45032  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 224 Butte E of Powellton. 975 Comment
  CHSC100970  Arbutus menziesii Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15489 Butte East side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC115005  Arbutus menziesii Lowell Ahart 2015-3-14 19948 Butte South side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC407721  Arceuthobium abietinum E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1600 Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  CHSC43229  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte About 1 mile southwest of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  UC392220  Arceuthobium campylopodum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  UC600690  Arceuthobium campylopodum E. B. Copeland July 1929 Butte Jonesville 487 Comment
  CAS-BOT-BC24433  Arctostaphylos manzanita Lowell Ahart 1975-3-30 s.n. Butte Near ne. corner of Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC24434  Arctostaphylos manzanita Lowell Ahart 1974-2-12 s.n. Butte Found along n. Honcut Creek. 45 Comment
  SEINET10841467  Arctostaphylos manzanita Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3374 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  SEINET10940291  Arctostaphylos manzanita Mary Susan Taylor Taylor 994 Butte Bidwell Park, Chico. Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CHSC21280  Arctostaphylos manzanita subsp. manzanita M. S. Taylor 1974-4-22 255 Butte Ca. 50 ft E to Cohasset Hwy, ca. 2 mi N of Cohasset. 762 Comment
  UC725916  Arctostaphylos mewukka A. A. Heller 1942-3-22 16406 Butte 1/2 mi below first house; Cohassett Comment
  UCR198096  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mi northeast of Swain Hill, 1 mi west-southwest of Quartz Hill, 50 ft east of Grubbes Creek Road 1220 Comment
  CHSC107587  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 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
  CAS-BOT-BC38531  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 mi. from Paradise on road to Pentz. 426 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC3303  Arctostaphylos nevadensis M. L. Miller 1966-4-23 Butte About 1/2 mile above Stirling City on the Skyway. Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  CAS-BOT-BC47373  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51086 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47374  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51087 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47390  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Feather Falls. 396 Comment
  CAS-BOT-BC47392  Arctostaphylos viscida subsp. viscida M. S. Taylor; T. Devine; M. Merryman 1981-11-2 3376 Butte Bigi Bend Mt. Quad. East side of Lumpkin Rd., north of Macabes Creek. 91 Comment
  CDA42419  Arctostaphylos viscida subsp. viscida D. G. Kelch 2012-9-19 12 .362 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC106052  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CHSC109110  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the high bank, on the south side of Ten Miles House Road, about 1/2 miles west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  RSA636988  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27472 Butte Approximately 1/2 km west of Cohasset. Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  UC1174972  Arctostaphylos viscida subsp. viscida P. C. Everett and E. K. Balls 1959-10-20 23908 Butte Hwy 32 9.4 mi ne Chico (toward De Sabla) 792 Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  JEPS110513  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep 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
  SEINET8521980  Aristida oligantha Kelly W. Allred 1991-1 5480 Butte along Honcut Road, 2 miles north of junction with Palermo Road, in annual valley grassland 91 Comment
  UC204461  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte Big Chico Creek Canyon e. of Chico; Big Chico Creek Canyon 68 Comment
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Feb 17 2016
  CAS-BOT-BC295835  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  RSA0039299  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  SD5837  Artemisia douglasiana E. B. Copeland 1930-7-27 Butte Jonesville 1550 Comment
  UCD129281  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch. Comment
  CHSC44033  Artemisia tridentata subsp. tridentata F. Jay Fuller 1988-6-17 520 Butte Approx. 50 m southwest of bridge over Marble Creek. 1072 Comment
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Feb 14 2007
  SEINET10961641  Asclepias eriocarpa R. Carter 1966-7-6 Carter 465 Butte 7 mi E of Oroville on E side of Feathervale, 0.23 mi S of intersection of Wyandotte-LaPorte Rds. 244 Comment
  UCR219262  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2009-9-5 15591 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CAS-BOT-BC68878  Aspidotis californica M. S. Taylor 1980-2-17 2356 Butte Ca. 1/4 mi. SW of lower Forbestown Rd, ca. 3 mi. W of Forbestown. 396 Comment
  HSC96985  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico, along Yahi Trail above Brown's Hole 213 Comment
  POM181763  Aspidotis californica H. F. Copeland 1926-03 542 Butte Near Iron Canyon. Comment
  CAS-BOT-BC65910  Aspidotis densa H. F. Copeland 1920-8-2 201 Butte near Jonesville 1219 Comment
  CAS-BOT-BC65912  Aspidotis densa Clarence R. Quick 1964-7-9 64 -53 Butte north of Jarbo Gap Comment
  CHSC30702  Aspidotis densa M. S. Taylor 1980-5-27 2706 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CAS-BOT-BC65918  Aspidotis densa Lowell Ahart 1984-7-19 4736 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile from Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC44850  Aster radulinus Lowell Ahart 1975-9-4 975 Butte About 1 mile northwest of the Golden Trout Crossing on the South Fork of the Feather River. 762 Comment
  RSA32898  Aster subulatus var. parviflorus A. A. Heller 1923-10-13 13828 Butte Near Richvale Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  JEPS119691  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  SEINET945442  Astragalus pauperculus Frank W. Gould 1938-1 316 Butte 2 miles north of Chico in rocky (volcanic) pastureland. Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS102548  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC25266  Asyneuma prenanthoides M. S. Taylor 1977-6-26 1370 Butte On s side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 731 Comment
  CHSC27997  Asyneuma prenanthoides M. S. Taylor 1978-7-18 1673 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC86570  Asyneuma prenanthoides L. P. Janeway; Christine Hantelman 2003-7-3 7866 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.7 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. Steep north-facing slope above a small spring. 279 Comment
  CHSC27912  Athyrium filix-femina M. S. Taylor 1978-7-19 1737 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC84418  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10544 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 mile (air) southwest of the Sly Creek Reservoir Dam. 996 Comment
  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CDA34623  Avena fatua L. Ahart 2009-4-17 15553 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC46434  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 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
  SEINET10514062  Avena fatua Lowell Ahart 1981-5-24 Ahart 2835 Butte In a farmed field planted to Sierra Oats, on a dry red gravelly soil, on Peter Ahart Ranch, ca. 2.5 mi NE of Honcut. 50 Comment
  CHSC21176  Baccharis douglasii M. S. Taylor 1975-10-29 971 Butte On N side of Butte Creek, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  UCD129404  Baccharis glutinosa L. Ahart 1981-9-27 3215 Butte Palermo. 100 Comment
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  UC1056314  Bacopa repens John Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CHSC20900  Barbarea orthoceras M. S. Taylor 1975-8-31 892 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 609 Comment
  CHSC36680  Barbarea orthoceras R. E. Preston 1982-6-25 317 Butte On the bank of Kanaka Cr; in n meadow at site of Powellton, ca. 3 mi nw of Stirling City. 1097 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  UCD169795  Bellis perennis L. P. Janeway 2011-4-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico), and Sol-Wil-Le-No Ave. 60 Comment
  SEINET10536479  Berberis dictyota Mary Susan Taylor 1979-10-13 Taylor 2247 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  JEPS104017  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles SE of Oroville. Comment
  RSA718091  Bergia texana L. Ahart 2006-8-5 13 .083 Butte Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS115000  Bidens frondosa Lowell Ahart 2007-11-3 14570 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 Comment
  CHSC90044  Blennosperma nanum Richard R. Snow 1991-3-25 8 Butte 50 yds n of Renkow Rd., .5 mi e of Meridian Rd. ca. 12.8 mi n of Chico. 70 Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD114350  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte S facing cliffs of Cape Horn; ca. 4.5 mi SE of Paradise. 335 Comment
  CAS-BOT-BC14635  Boechera rectissima H. F. Copeland 1931-6-10 1518 Butte Jonesville. 1524 Comment
  UC1472738  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 4a&b Butte Jonesville 1524 Comment
  CHSC36962  Boykinia major M. S. Taylor 1982-8-16 5018 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsy Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  CHSC45203  Brachypodium distachyon Lowell Ahart 1974-4-24 434 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC113380  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  CHSC113308  Brassica rapa Lowell Ahart 2014-4-16 19359 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. 29 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
  CHSC38764  Brodiaea californica var. californica Vernon Oswald 1983-5-9 460 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  CHSC45016  Brodiaea elegans Diane Mastalir 1988-4-25 19 Butte Bidwell Park Chico, 1.6 mi ne of Wildwood Ave on Upper Park Rd., 0.3 mi nw. 109 Comment
  SEINET3559684 Image available Brodiaea hyacinthina Lewis S. Rose 1933-5-27 33194 Butte Bangor. 267 Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  CHSC37710  Brodiaea sierrae M. S. Taylor 1982-6-24 4749 Butte W side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70. 670 Comment
  CHSC51935  Brodiaea sierrae L. P. Janeway 1987-5-20 2070 Butte Above Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CDA31575  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte About 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows, west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, and 100 yards south of the cabin Comment
  CHSC101665  Bromus carinatus var. carinatus Lowell Ahart 2009-4-26 15615 Butte East edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico. 286 Comment
  CAS-BOT-BC156296  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, Honcut. Peter Ahart Ranch, about 1 mile north and 0.25 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  SEINET4391132  Bromus diandrus G. K. Harris, D. Heinze 1963-4-16 389 Butte Chico 61 Comment
  CHSC56626  Bromus hordeaceus J. Lund 1980-3-24 Butte Chico Game Fish Farm, 0.2 mi east of Hwy 99, 1.0 mi north of Hwy 149. 76 Comment
  JEPS117608  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 238 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  UCD58928  Bromus laevipes Beecher Crampton 1965-6-17 7383 Butte Butte-Yuba Co. Border: Just west of Rackerby Store. La Porte Road. 420 Comment
  CHSC49514  Bromus madritensis subsp. rubens Vernon Oswald 1985-4-15 1708 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CAS-BOT-BC161610  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC36535  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS104169  Bromus tectorum Lowell Ahart 2003-5-9 10120 Butte In an alfalfa field, on the south side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, 3 mi (air) sw of Gridley. 24 Comment
  UCD60257  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. Comment
  HSC32577  Calandrinia ciliata Dale R. Gradek 1974-4-20 26 Butte N end of Table Mtn., near Oroville 305 Comment
  RSA325177  Callitriche heterophylla M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5403 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET10939584  Callitriche heterophylla subsp. bolanderi Mary Susan Taylor 1984-4-6 Taylor 5403 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC38282  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-4-10 318 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC29057  Callitriche marginata R. A. Schlising 1980-4-2 3542 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC45837  Calocedrus decurrens Lowell Ahart 1973-1-14 147 Butte Along the edge of the dirt road to Forbestown Reservoir, about 3 miles northeast of Forbestown. 762 Comment
  CHSC21263  Calochortus albus M. S. Taylor 1973-5-6 16 Butte Ca. 1 mi n of Oroville Dam Afterbay,on Cherokee Rd. 121 Comment
  CHSC2839  Calochortus albus David Prall 1965-4-25 25 Butte On roadside bank of north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  SEINET12046804  Calochortus albus D. J. Funk 1976-1 17 Butte ca 5 ft W of Humbug Rd & 150 yd NW of covered bridge on Butte Creek, 6.4 mi ESE of Chico 110 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  SEINET10971609  Calochortus leichtlinii Mary Susan Taylor 1978-7-18 Taylor 1702 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC34484  Calochortus luteus J. D. Jokerst 1978-5-21 127 Butte 200 met w of Hwy 32 on top of ridge. 365 Comment
  CAS-BOT-BC491859  Calochortus luteus H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles south west of Oroville, hwy. 24 Comment
  RSA21664  Calochortus luteus Carl B. Wolf 1937-5-18 8734 Butte Northern Sierra Nevada foothills, 11 miles below Magalia on Oroville road 152 Comment
  SEINET12046116  Calochortus luteus Unknown 1978-1 19 Butte ca 10 ft E of Skyway Rd, ca 1.5 mi NE of Butte Creek bridge between Chico and Paradise 152 Comment
  CAS-BOT-BC492604  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte Chico-Centerville road, 8 miles from Chico Comment
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  CAS-BOT-BC493341  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CDA15391  Calochortus tolmiei G. F. Hrusa 1997-4-3 13689 Butte Sierra Nevada; Immed. above Paradise Lake dam along Old Railroad Grade Rd., approx. 3 m. N of Magalia. Comment
  CAS-BOT-BC494315  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Shallow ravine, summit between the West Branch and North Fork of the Feather River on highway 324, in the Arid Transition Life Zone. Comment
  CAS-BOT-BC175757  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadows by North Willow Creek 1550 Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  JEPS107984  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  RSA788196  Calycadenia oppositifolia R. L. Carr 1977-7-6 2033 Butte Big Ridge Rd, 2.3 mi SE of jct with Oroville-Quincy Hwy, S of Berry Creek. 610 Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CAS-BOT-BC270882  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  RSA255511  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy. 99 at Durham Road, 10 miles SE of Chico Comment
  CHSC98900  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south edge of the top of North Rim overlooking Bear Hole. 291 Comment
  RSA755412  Calycadenia truncata L. Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  UC176693  Calyptridium monospermum A. A. Heller 1913-6-7 10804 Butte near Stirling 1074 Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  JEPS121899  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CHSC33254  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-21 3168 Butte Along Hwy 32, 8.5 miles N of Tehama/Butte County line. Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC99549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2008-5-26 9392 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  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
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  RSA718780  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte 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
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  JEPS119581  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte 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. Comment
  SEINET10463078  Campanula prenanthoides Mary Susan Taylor 1978-7-18 Taylor 1673 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  CHSC20545  Campsis radicans M. S. Taylor 1975-6-30 823 Butte 1456 Arcadian, Chico. Comment
  CHSC10793  Capsella bursa-pastoris Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC109004  Capsella bursa-pastoris Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17918 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC39073  Capsella bursa-pastoris R. A. Schlising 1983-3-20 4391 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC490  Capsella bursa-pastoris P. Delaplane 1965-3-20 38 Butte At base of steps of 1069 East Ave., Chico. 30 Comment
  CHSC57175  Capsella bursa-pastoris Rickelle Syrdahl 1991-4-16 20 Butte Ca. 50 yds sw of jct of Centerville Rd and Honey Run RD, n side of Butte Creek at covered bridge. 152 Comment
  HSC96910  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 air mi. SW of Chico 26 Comment
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  CHSC38419  Cardamine californica var. californica Vernon Oswald 1982-12-23 31 Butte Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CAS-BOT-BC37791  Cardamine nuttallii A. A. Heller 1922-3-19 13599 Butte Magalia. Comment
  CHSC34479  Cardamine oligosperma M. S. Taylor 1975-4-26 521 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CHSC87446  Cardamine oligosperma R. D. Fischer; Jenny Marr 2004-4-2 80 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, south of Pine Trail junction. 399 Comment
  CHSC62722  Cardamine pachystigma B. Castro 1993-3-31 461 Butte Ca 1.5 mi E of Mtn House, on N side Four Mile Ridge Road (or USFS Rd 22N33), 0.4 mi W of its jcn with the Oro-Quincy Hwy. On ridgetop. 944 Comment
  CHSC34523  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-3-27 49 Butte Ca. 50 m e of Coutelenc Rd, 320 m n of its jct with the Skyway, Magalia. 700 Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  CAS-BOT-BC282963  Carduus pycnocephalus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut, banks of N Honcut Creek 50 Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  SEINET10502757  Carex Lowell Ahart 1985-6-30 Ahart 5078 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC32414  Carex abrupta Amos Arthur Heller 1913-6-7 10820 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC52275  Carex abrupta Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC43872  Carex amplifolia L. P. Janeway 1987-6-26 2324 Butte Mdw just W of Logue Meadows along road to Lynch Meadows. 1325 Comment
  JEPS110197  Carex angustata Lowell Ahart 2006-7-16 12974 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
  UCD140091  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC25460  Carex barbarae Hayes; Warner 1977-9-12 104 Butte Along the middle branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CHSC47063  Carex barbarae L. P. Janeway 1989-5-13 3235 Butte Grassy mdw on E side of Concow Reservoir; along Concow Rd 5.2 mi N of Hwy 70. 629 Comment
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CDA14178  Carex bolanderi G. F. Hrusa 1997-5-29 13806 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Occasional clumping perennial in moist sites along creek margin. Shaded areas. Comment
  CHSC110471  Carex bolanderi L. P. Janeway 2013-5-9 11108 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +-overlooking Cresta, along Camp Creek Road 2.7 road km northeast of Dixie Road. 670 Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 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
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  UCD140164  Carex bolanderi L. P. Janeway; B. Castro, Pat Kelly 1987-5-10 2032 Butte Butte Creek Trail, above Butte Creek ca. 1 mile south of the Doe Mill Road bridge. 609 Comment
  CHSC52849  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2997 Butte Crane Valley; away from the meadow in disturbed forest. 1569 Comment
  HSC86839  Carex capitata L. P. Janeway 1988-7-29 3111 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC44116  Carex cusickii L. P. Janeway 1988-7-29 3119 Butte Mdw at jct of Colby, Willow and Butte Cks and Humboldt Rd. 1485 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
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  SEINET7558570 Image available Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley, at head of Concow Creek. Pulga 7.5' quad. 1116 Comment
  JEPS87705  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 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
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC45053  Carex heteroneura var. heteroneura Vernon Oswald 1987-6-23 3013 Butte High Lakes Rd. 1.4 mi (odometer) n of Philbrook Rd. 1767 Comment
  SEINET11173357  Carex heteroneura var. heteroneura Unknown 1999-7-17 6508 Butte Butte County Comment
  CHSC42814  Carex hirtissima L. P. Janeway 1987-6-13 2214 Butte Mdw just NE of Jct of Concow Cr and the rd to Flea Mtn. 1188 Comment
  JEPS122077  Carex hirtissima Lowell Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET11152735 Image available Carex hoodii Lowell Ahart 2010-1 17201 Butte 1918 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  SEINET7562437 Image available Carex integra Lowell Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC7557  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3044 Butte Just below saddle between Coon Hollow and Chips Creek. West facing rocky outcrop near dry minor drainage. 1889 Comment
  UCD140469  Carex inversa Peter F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway's Station, Sacramento Valley. 50 Comment
  CHSC44689  Carex jonesii L. P. Janeway; C. A. Janeway 1986-9-13 1850 Butte Mdw along Humbug Summit Rd ca 1 1/2 mi SW of the summit. 1859 Comment
  CAS-BOT-BC7782  Carex laeviculmis Clarence Roy Quick 1963-7-16 63 50 b Butte Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  CAS-BOT-BC278763  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  LA17618  Carex lemmonii E. B. Copeland; 1929-7-5 610 Butte Jonesville 1500.0 Comment
  CAS-BOT-BC32156  Carex multicaulis Herbert Faulkner Copeland 1931-6-10 1546 Butte Woods between Willow and Colby Creeks. Jonesville Comment
  UC532223  Carex multicaulis H. F. Copeland 1931-6-10 1546 Butte woods between Willow Creek and Colby Creek; Jonesville Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC105520  Carex pachystachya Lowell Ahart 2010-9-28 17271 A Butte On damp black soil, about 20 yards west of Big Kimshew Creek, in shade, others out in the open dry meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC44950  Carex praegracilis L. P. Janeway 1988-7-2 2943 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS115981  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  UCD140781  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte city of Chico, south side of town; in backyard lawn at 129 W. 19th Street. 60 Comment
  SEINET10912835  Carex subfusca Lawrence P. Janeway, C. A. Janeway 1986-9-13 Janeway 1846 Butte T26N, R5E, Jonesville quad (15') SE 1/4 of sec. 16. Just E of Scotts John Cr. above the Humboldt-to-Humbug road (rd 26N27). 1737 Comment
  CHSC46042  Carex texensis L. P. Janeway 1987-4-28 2010 Butte CSU, Chico campus. Semi-wild area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  CAS-BOT-BC115307  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows. 1219 Comment
  CHSC52238  Carex utriculata L. P. Janeway 1987-6-26 2326 Butte Meadow just NW of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  SEINET10894839  Carex vernacula Lowell Ahart 2010-9-28 Ahart 17264 Butte T25N, R5E, northeast 1/4 Section 29. On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CHSC40878  Castilleja applegatei subsp. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found on slope above creek, west side, downstream of pond. 1371 Comment
  UC726497  Castilleja applegatei subsp. pinetorum A. A. Heller 1942-6-5 16498 Butte 3 mi w Pulga Comment
  SEINET10549335  Castilleja applegatei var. fragilis Mary Susan Taylor 1982-5-2 Taylor 4384 Butte 2300 ft. T22N R4E sec 13. Pulga SW quad. N side of Hwy 70, 4.2 mi w of Pulga bridge, ca. 19 air mi ne of Oroville. 701 Comment
  JEPS81481  Castilleja attenuata M. S. Taylor 1982-4-28 4355 Butte ca 12 mi sw Gridley (Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd); Pennington Quad. 21 Comment
  CHSC38713  Castilleja exserta Vernon Oswald 1983-3-31 235 Butte Upper Bidwell Park, Chico, beside Yahi Trail 1600 ft e of Salmon Hole. 182 Comment
  CHSC113234  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CDA41243  Castilleja lacera L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CHSC1825  Castilleja lacera L. Oliver; S. Sloan 1935-5-4 Butte Butte Creek Canyon. Comment
  JEPS4326  Castilleja lacera R. F. Hoover 1936-5-20 1149 Butte 10 mi sw Oroville Comment
  UC886502  Castilleja lacera A. A. Heller 1915-5-28 11904 Butte near Cohasset (Sierra foothills); Sierra Comment
  POM284544  Castilleja miniata Lyman Benson 3956 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  CHSC11900  Castilleja parviflora E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  CAS-BOT-BC195579  Catapodium rigidum Lowell Ahart 1982-5-3 3406 Butte Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut 50 Comment
  SEINET10448453  Caulanthus lasiophyllus Lowell Ahart 1983-5-7 Ahart 3966 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  UCR231508  Ceanothus Anna M. Hurlbutt 2009-8-7 025 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC3611  Ceanothus cuneatus R. Jaegel 1966-2-21 29 Butte Collected 10 miles east of Durham Cemetary, in a meadow on the floor of the valley. Comment
  SEINET13945808 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  CHSC94159  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  UC1070772  Ceanothus integerrimus P. L. Johannsen 1936-7-30 975 Butte 3 mi wsw Chaparral; Paynes Creek quad. 1371 Comment
  UCR270589  Ceanothus integerrimus John F. Emmel 2001-7-24 1736 Butte 2.3 road miles southwest of Jonesville on road to Humbug Summit, near Cherry Hill Campground 1768 Comment
  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
  CHSC31437  Ceanothus integerrimus var. californicus L. Ahart 1980-9-10 2645 Butte Along edge of rd ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CAS-BOT-BC51147  Ceanothus lemmonii John Thomas Howell 1975-6-15 51115 Butte Paradise, Skyway near Billie Road 609 Comment
  CAS-BOT-BC51149  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles North-East of Forbestown 868 Comment
  CHSC64651  Ceanothus lemmonii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  CHSC81298  Ceanothus lemmonii J. Trizzino 2001-4-25 54 Butte Humbug Road, 7 mi north of Steel Bridge, west facing hillside. 944 Comment
  RSA0028435  Ceanothus lemmonii M. M. Boney 1897-1 1724 Butte Foothills Comment
  SEINET10493646  Ceanothus lemmonii Heidi H. Schmidt 1993-6-15 Schmidt 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  RSA481917  Ceanothus prostratus Aaron Liston 1988-3-15 6972 Butte East of Cohasset, Ponderosa Way 500 Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  CHSC3015  Cedrus deodara Carl Pejsa 1958-4-19 137 Butte Bidwell Park Forestry Station. Comment
  CDA38777  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. Comment
  CHSC110977  Celtis sinensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CDA7091  Centaurea calcitrapa W. Gilbert, R. Dodd 1970-7-22 Butte South side of Highway 32 to Lake Almanor, northeast of Forest Ranch, 19.5 miles northeast of Chico. 0 Comment
  CAS-BOT-BC284502  Centaurea solstitialis Sally Bianco 1995-11-9 1052 Butte NE edge of Concow Lake, 13199 Concow Road Oroville 670 Comment
  CDA34637  Centaurea solstitialis L. Ahart 2009-6-3 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC6085  Centaurea solstitialis B. Wilson 1968-5-17 203 Butte E of Broadway and First Street, Chico. 59 Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC45651  Centaurea stoebe subsp. micranthos Vernon Oswald; Lowell Ahart 1987-8-5 3175 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  CHSC50401  Centaurea stoebe subsp. micranthos Vernon Oswald 1990-6-27 4335 Butte Hwy 149 at Gold Run Creek, between Oroville Y on Hwy 99 and Wicks Corner on Hwy 70. Edge of road. 71 Comment
  CHSC28516  Centaurium tenuiflorum M. S. Taylor; J. D. Jokerst 1979-10-13 2271 Butte Wet spot near creek on Jordan Hill Rd, (Ponderosa Way on some maps) ca. 1.5 mi n of Sawmill Peak, ca. 10.7 mi n of JH Rd jct with Concow Rd, ca. 2 mi ne of Magalia. 853 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC91462  Centaurium tenuiflorum Lowell Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  JEPS127004  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte About 200 yards west of Loma Rica, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 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
  CHSC31913  Cephalanthus occidentalis var. californicus M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 304 Comment
  CHSC69716  Cerastium fontanum subsp. vulgare Lowell Ahart 1997-10-20 7920 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS108776  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC100963  Cerastium glomeratum Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15494 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC30877  Cerastium glomeratum J. D. Jokerst 1979-4-2 1164 Butte Top of North Table Mt, immediately S of the jct of the east edge of Mt. 396 Comment
  CHSC92510  Cerastium glomeratum Lowell Ahart 2005-12-11 12524 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC388260  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  JEPS120146  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte About 70 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
  POM18691  Cercis occidentalis E. B. Copeland 1903-4-11 3045 Butte Chico. Comment
  CAS-BOT-BC137005  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  JEPS115231  Cercocarpus betuloides var. betuloides Lowell Ahart, John Dittes 2009-3-20 15518 Butte On the south side of the Guardian Rock Trail, about 100 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 C 407 Comment
  CAS-BOT-BC277628  Chaenactis glabriuscula var. megacephala Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC48842  Chamaebatia foliolosa Vernon Oswald 1985-5-20 1773 Butte Forbestown Rd. 0.3 mi ne of Robinson Mill Rd. 822 Comment
  CHSC102521  Chamaesyce maculata Lowell Ahart 2009-10-8 16414 Butte South 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
  CHSC113145  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. 299 Comment
  CHSC113843  Chamaesyce maculata Lowell Ahart 2014-8-24 19729 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  JEPS108953  Chamaesyce maculata Lowell Ahart 2006-9-11 13284 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
  RSA724813  Chamaesyce maculata L. Ahart 2006-9-11 13284 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  UC869161  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville (in hills) Comment
  CHSC97689  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-11-3 14564 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  SEINET10777942  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 Ahart 16404 -A Butte T17N, R4E, northeast 1/4 Section 4. A whole plant, on dry gravelly soil, on the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Valley Grassland. 30 Comment
  CDA14058  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1997-5-1 13705 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC51255  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  SEINET9340404  Chenopodium desiccatum Unknown 2007-10-7 13065 Butte Northern Sacramento Valley Comment
  UCD97854  Chenopodium missouriense G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS115101  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 60 Comment
  CHSC109785  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC451370  Chimaphila menziesii E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  CHSC11807  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  UCD80427  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0198 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca.75 m from the east fence. 85 Comment
  CAS-BOT-BC498626  Chlorogalum angustifolium Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC50679  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC62478  Chorizanthe polygonoides B. Castro 1987-5-21 117 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On lava outcrop in bed of ephermeral drainage between two S-trending ridges, in opening in chaparral. 457 Comment
  CHSC9142  Chorizanthe stellulata L. W. Gray 1970-5-5 27 Butte Collected ca. 30 yds. N. of the Chico-Paradise Skyway ca. 7 mi. E. of the intersection of the Skyway with Highway 99 E. Was located ca. 5 ft. from the cliffs. Comment
  CHSC24494  Chrysolepis sempervirens M. S. Taylor 1976-6-28 1166 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  UC1135245  Chrysolepis sempervirens P. L. Johannsen 1936-7-16 924 Butte 0.75 mi ese Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1402 Comment
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SEINET10475261  Chrysothamnus nauseosus subsp. albicaulis Mary Susan Taylor 1979-10-13 Taylor 2261 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
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  RSA126604  Cinna latifolia H. S. Yates 1936-8-13 6098 Butte Butte Meadow. 1341 Comment
  UC179477  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC285525  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC12119  Clarkia arcuata M. F. Smith 1972-3-1 8 Butte On Cherokee Orille Road. Six (6) miles north of Oroville on Table Mountain. 304 Comment
  CHSC30796  Clarkia arcuata M. S. Taylor 1980-4-18 2527 Butte Bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 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
  CAS-BOT-BC164525  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-3 63 -54 Butte 12 miles northeast of Chico Comment
  CHSC27341  Clarkia gracilis subsp. albicaulis T. B. Devine 1977-6-5 413 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  CHSC42365  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte On roadcuts near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC88639  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-29 354 Butte Plumas National Forest. 4WD Road off Concow Road. 853 Comment
  CHSC94043  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  JEPS102237  Clarkia gracilis subsp. albicaulis Samantha Hillaire 2001-5-16 Butte 0.3 mi SE of Big Chico Creek (vicinity of Ponderosa Way, on a steep roadcut of a little-used road, above and below the road) 353 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  POM32099  Clarkia gracilis subsp. albicaulis Helen M. Edwards 1917-6-6 s.n. Butte De Salba Comment
  RSA108396  Clarkia gracilis subsp. albicaulis Harlan Lewis, M. Roberts 1951-5-19 830 Butte Road from Nimshew to Butte Creek Canyon, 2.3 miles above bridge across Big Butte Creek. 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
  CAS-BOT-BC163278  Clarkia mildrediae subsp. mildrediae Gladys L. Smith 1976-6-5 4536 Butte Roadside banks of Lower Feather River Canyon, Rte. 70 548 Comment
  CAS-BOT-BC163284  Clarkia modesta Saichi Kawahara 1968-5-4 372 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC70740  Clarkia mosquinii L. P. Janeway 1994-6-23 4671 Butte Pinkston Canyon Road about 400 ft east of Concow Road. Southwest-facing road cutbank. 563 Comment
  SEINET10492502  Clarkia mosquinii subsp. mosquinii Lawrence P. Janeway 1991-6-1 Janeway 3978 Butte Berry Creek quad T22N, R4E, SE 1/4 of SW 1/4 of sec 35, elev. 1780 feet. West-facing rocky cut-bank of Dark Canyon Road 0.6 mile south of Big Bend Road/Parkhill. Mid-slope of canyon in mixed conifer forest. 545 Comment
  UCD21824  Clarkia purpurea L. D. Gottlieb 2003-5-24 302 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CHSC56556  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill. 304 Comment
  CHSC88061  Clarkia purpurea subsp. viminea R. D. Fischer 2004-5-30 187 Butte Northern Sierra Nevada, 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. 3.0 miles s. of this junction. UTM: 10616846E 4407606N. 420 Comment
  CAS-BOT-BC164796  Clarkia rhomboidea L. P. Janeway 1991-6-1 3985 Butte Northwest-facing cut-bank of Dark Canyon Road 3.3 mi south of Big Bend Road/Parkhill 304 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC37429  Clarkia rhomboidea R. Schlising; K. Tarp 1982-7-28 4352 Butte E of Pulga and SW of Coyote Gap Station, on Big Bar Mountain Road. On roadside bank. 1249 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  RSA108409  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 759 Butte Highway 24, 1.4 mile south of Arch Rock, Feather River. Comment
  SEINET3449641  Clarkia rhomboidea Unknown 2003-6-30 10327 Butte Forbestown, Forbestown, about 2 miles air northwest, south side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 490 Comment
  UC1730248  Clarkia rhomboidea L. P. Janeway 1993-6-9 4372 Butte SE of Swayne Hill (slope above French Creek, along Road 22N34 1.8 mi S of the low water crossing) 621 Comment
  CAS-BOT-BC164801  Clarkia rhomboidea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River at junction with road to Las Plumas Comment
  POM271488  Clarkia rhomboidea J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  RSA144793  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -118 Butte Highway 32 at line between Tehama County and Butte County. Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  CHSC2933  Clarkia unguiculata W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  UCD169923  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 mile (air) east of Chico. 180 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
  SEINET10453172  Clarkia unguiculata Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4170 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC35704  Claytonia exigua subsp. exigua J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1560 Butte Opening in Yellow Pine F. Adjacent to road to Forbestown Resv. just S of its jct with the S. Fork of the Feather River. Comment
  CHSC94261  Claytonia palustris Lowell Ahart 2006-7-16 12987 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  CAS-BOT-BC439431  Claytonia parviflora subsp. parviflora A. A. Heller 1914-3-28 11240 Butte Chico-Oroville road 11-12 miles from Chico on the banks of Dry Creek Comment
  CAS-BOT-BC439774  Claytonia perfoliata Lowell Ahart 1981-4-9 2755 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10962339  Claytonia rubra Mary Susan Taylor 1981-4-28 Taylor 3564 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC56075  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-19 2841 Butte 3.4 mi north of Stirling City towards Inskip; along logging road 0.2 mi west of and parallel to Skyway. 1219 Comment
  UC852042  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows; Sierra Nevada 1219 Comment
  CAS-BOT-BC443766  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia 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
  SEINET5337773  Clematis lasiantha S. Dean 1979-4-24 s.n. Butte Hwy 70. Feather River Canyon. Oroville-Quincy. Approximately 20 miles from Oroville. 1067 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  CHSC38688  Collinsia tinctoria Vernon Oswald 1983-5-18 501 Butte Upper Bidwell Park, Chico, near Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  UC175549  Collinsia tinctoria A. A. Heller 1913-5-28 10768 Butte Table Mountain 8 mi n of Oroville 182 Comment
  CHSC44412  Collomia heterophylla Lowell Ahart 1988-5-30 6023 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CHSC29378  Collomia tinctoria R. A. Schlising; R. Banchero 1980-6-12 3691 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  POM219472  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. 1500 Comment
  CHSC101130  Comandra umbellata subsp. californica Lowell Ahart 2009-5-15 15704 Butte On the east side of Big Chico Creek, about 3 yards west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  UC1609146  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1993-4-21 5292 Butte 2.25 air mi nw of Magalia (on w side of Middle Butte Creek Trail, Ponderosa Way); Middle Butte Creek Trail, Ponderosa Way 731 Comment
  CDA21754  Conyza canadensis L. Ahart 2000-11-4 8716 Butte On the east side of Highway 70, just north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  CHSC11778  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville. 1550 Comment
  CHSC102735  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, 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. 234 Comment
  UC426963  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  UC455443  Cornus nuttallii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10973107  Cornus sessilis Mary Susan Taylor 1975-5-2 Taylor 550 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  UC1562396  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  SEINET10478569  Corylus cornuta var. californica Mary Susan Taylor 1980-4-27 Taylor 2555 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  JEPS115259  Cotoneaster pannosus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  CHSC39619  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 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
  CHSC105268  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC45001  Cotula coronopifolia Lowell Ahart 1979-5-20 1886 Butte Man made pond, west of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  JEPS128723  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. Comment
  CAS-BOT-BC427626  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  SEINET9305827  Crassula connata Unknown 1963-3-22 63019 Butte Near summit of Sugarloaf Peak, Campbell Hills. In shallow soil on basalt. Comment
  CHSC82225  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  RSA755766  Crataegus laevigata L. Ahart 2009-5-30 15792 Butte East side of Big Chico Creek, about 30 yards south of the gate, about 10 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. 270 Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  CHSC109865  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UCR51795  Crepis occidentalis subsp. pumila H. F. Copeland 1931-11-6 1532 Butte Jonesville, near Butte Creek Meadows. 1829 Comment
  CHSC37393  Croton setiger R. A. Schlising 1980-8-31 3980 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Throughout area. Comment
  CHSC66356  Croton setiger Vernon H. Oswald 1996-6-20 7824 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC117425  Crucianella angustifolia Lowell Ahart 2016-5-30 20899 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 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
  CDA1935  Crypsis alopecuroides L. Ahart 2006-9-1 13302 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  RSA725010  Crypsis schoenoides L. Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CAS-BOT-BC249066  Cryptantha flaccida George K. Helmkamp; E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  UC1594707  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte about 2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  CHSC46756  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte West of the seep, along the dirt road 1/10 mile north-west of the water tower, north of the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  UCD120094  Cryptantha torreyana E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  UC600568  Cryptogramma acrostichoides H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  CHSC43655  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  CHSC7190  Cupressus macnabiana F. Kimball 1969-4-23 67 Butte Roadsides of Coutolenc Rd. 0.3 mi n of Paradise-Stirling City Skyway, 0.5 mi n of Magalia. 762 Comment
  CHSC6609  Cupressus macrocarpa M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 Comment
  CHSC69  Cupressus sempervirens K. McKenzie 1928-4-25 Butte Planted specimen on Chico State Campus. Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  CHSC80753  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte Large vernal pool, east of the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC577  Cuscuta indecora V. Holt 1935-10-1 Butte Chico Creek. 91 Comment
  UC1191662  Cuscuta obtusiflora var. glandulosa Herbert L. Mason and Verne Grant 1946-8-14 13021 Butte Sacramento Outing Club Butte Sink Comment
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Oct 6 2011
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 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
  CHSC61293  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7144 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  RSA774126  Cymopterus terebinthinus var. californicus L. Ahart 2010-9-21 17233 Butte On both sides of the County Road, between Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows Comment
  CHSC5966  Cynodon dactylon M. MacArthur 1968-6-17 216 Butte Ca. 5 ft SE Big Chico Creek and S of Headhouse, Chico State College campus. 60 Comment
  CHSC3573  Cynoglossum grande Judy Lee Potter 1966-2-26 Butte Nelson's Bar. West of Paradise. Comment
  CHSC33796  Cynoglossum occidentale M. S. Taylor 1981-5-4 3595 Butte SW of 21N80, s side of spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi sw of Brush Creek. 914 Comment
  CHSC34174  Cyperus bipartitus L. Ahart 1981-9-15 3169 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC61342  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  CAS-BOT-BC114601  Cyperus eragrostis Ira L. Wiggins 1928-9-9 s.n. Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  CHSC84153  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the west side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  RSA0028815  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 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
  UCD54071  Cyperus eragrostis P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  JEPS119524  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC94647  Cyperus flavescens Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  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
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  CDA42918  Cyperus iria L. Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  CHSC37082  Cyperus odoratus L. Ahart 1982-10-11 3854 Butte On bottom of deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC11932  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CHSC71266  Cyperus squarrosus Lowell Ahart 1998-7-1 8027 Butte About 100 yards south of a east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC114204  Cyperus strigosus Lowell Ahart 1982-10-11 3854 Butte West of the check-in-station, Gray Lodge, ca. 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC68044  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  UC399278  Cystopteris fragilis Mrs. R. M. Austin May 1896 244 Butte bluffs, Butte Creek Butte Creek Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  UCR143548  Danthonia americana H. F. Copeland 1931-6-11 1558 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC61368  Danthonia californica var. americana Lowell Ahart 1993-7-29 7121 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  CHSC34232  Darmera peltata M. S. Taylor 1981-5-7 3636 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  UCD127424  Daucus pusillus R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  SEINET10454650  Daucus pusillus Mary Susan Taylor 1981-5-21 Taylor 3778 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CAS-BOT-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  CAS-BOT-BC121512  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  UCD22641  Delphinium hesperium Joseph Laferriere 1982-4-18 3 Butte Side of Hwy 70, 1/4 mile SW of jet of Baggett-Marysville Rd., 3 miles south of Oroville. 65 Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC38163  Delphinium nudicaule Vernon Oswald 1983-3-4 108 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  CHSC57138  Delphinium nudicaule R. A. Emmrich 1975-4-20 80 Butte Cohasset Hwy., 10 yds w of roadside, ca. 6 mi n of Chico. 121 Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CHSC56770  Delphinium nuttallianum R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4117 Butte E of Stirling City, W of Little Kimshew Creek on top of Table Mountain. 1828 Comment
  RSA718036  Delphinium patens R. D. Fischer 2005-4-30 717 Butte Forest Ranch, Sierra Nevada foothills adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail 518 Comment
  CHSC56777  Delphinium patens subsp. patens J. D. Jokerst 1981-4-2 1167 Butte Table Mountain; south of Cherokee Road where it intersects the east edge of the section, on east side of the mountain. 396 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC17024  Delphinium variegatum Lewis S. Rose 1945-5-12 45046 Butte Richardson Springs 304 Comment
  CHSC41516  Delphinium variegatum Thomas A. Welgan 1979-4-18 12 Butte Ca. 3.5 mi e of Highway 99 and Chico on Skyway 20 ft n of Skyway. Field. 213 Comment
  CHSC52506  Delphinium variegatum D. D. Schultz 1975-5-4 6 Butte 20 yds n of .9 mi n of intersection of Bruce Rd. and E. Park Ave. 70 Comment
  CHSC53298  Delphinium variegatum R. J. Goedl 1976-4-20 1 Butte Ca. 6.4 mi se of Chico on Skyway, 25 yds s of Highway. Field. 213 Comment
  CAS-BOT-BC16978  Delphinium variegatum subsp. variegatum H. E. Brown 1897-4-15 160 Butte Near Clear Creek Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. Comment
  CHSC65826  Delphinium variegatum subsp. variegatum Mark S. Cederborg 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CAS-BOT-BC17023  Delphinium variegatum subsp. variegatum A. A. Heller 1918-4-19 12987 Butte Valley oak belt on the banks of Pine creek 12 miles north of Chico Comment
  CAS-BOT-BC192651  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CDA31662  Deschampsia danthonioides P. B. Kennedy 1914-5-1 Butte Chico 0 Comment
  CHSC6095  Deschampsia danthonioides A. R. Jaegel 1968-4-21 121 Butte In ditch, 10 yds. below Horseshoe Lake, Bidwell Park, Chico. Comment
  SEINET10524160  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-BC201739  Deschampsia elongata Lowell Ahart 1984-6-10 4700 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CAS-BOT-BC201749  Deschampsia elongata Lowell Ahart 1987-7-17 5822 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC33467  Descurainia incana R. E. Preston 1981-7-14 109 Butte Ca. 7.5 km ese of Jonesville. In meadow. 1950 Comment
  CHSC112202  Descurainia sophia Lowell Ahart 2013-4-20 18558 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CAS-BOT-BC402381  Dicentra formosa subsp. formosa Lowell Ahart 1983-9-21 4465 Butte Near French Creek, about 2 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CHSC19648  Dicentra nevadensis K. R. Stern 1964-5-16 Butte Chico. Comment
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Nov 18 2009
  CDA36759  Dicentra pauciflora D. B. Joley 1969-7-5 269 Butte Ca. 0.2 miles south of Humbug Summit. Comment
  CAS-BOT-BC254496  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1984-7-19 4726 Butte Along the road, about 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CAS-BOT-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
  SEINET10508816  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4726 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
  UCD148232  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2893 Butte 7.9 mi NNE of Oroville, along E side of Clark Rd, 0.9 mi N of its jct with Hwy 70. 84 Comment
  HSC32647  Dichelostemma capitatum subsp. capitatum Dave Knorr 1974-4-20 121 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CHSC4083  Dichelostemma multiflorum J. E. Bowlin 1967-4-21 27 Butte Ca. 3 feet n of Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC90610  Dichelostemma multiflorum Roberta A. Boer 1980-4-25 15 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, east side of Chico. 131 Comment
  CHSC96556  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  UC204578  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  CHSC77498  Dichelostemma volubile Anna Pinsky 1997-4-1 8 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 80 ft. above Big Chico Creek. Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC109790  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC94982  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CAS-BOT-BC153762  Diplacus angustatus Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC150277  Diplacus grandiflorus Grace Kermode 1899-6-17 s.n. Butte Chico Comment
  CHSC22325  Diplacus grandiflorus Robert A. Schlising 1964-6-12 2727 Butte Foothills. 9.5 miles south of Injun Jim Camp (in Plumas Co. near Tobin) along Alt. Hwy. 40 and Feather River. Comment
  SEINET8370221  Diplacus grandiflorus Unknown 1940-6-5 25677 Butte Route 24; along Feather River, above Oroville 10-12 mi. above. 1829 Comment
  CAS-BOT-BC153209  Diplacus kelloggii Gladys L. Smith 1976-4-1 s.n. Butte Table Mountain Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  SEINET8399955  Diplacus kelloggii K. L. Chambers 1987-4-29 5348 Butte Hwy. 70, along the Feather River above Lake Oroville, at highway bridge crossing the river at Pulga; on roadside flat. Comment
  CHSC43154  Diplacus layneae R. A. Schlising; D. Ikeda 1980-5-31 3608 Butte Cohasset Ridge, S of village of Cohasset, along firetrail above Cohasset Hwy. Comment
  CHSC93965  Diplacus layneae R. D. Fischer 2004-6-20 761 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC109355  Dittrichia graveolens T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. On the west shoulder of Bardees Bar Road approximately 0.5 road km northeast of intersection of Bardees Bar and Big Bend Roads. 657 Comment
  RSA769811  Dittrichia graveolens L. 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 61 Comment
  CAS-BOT-BC136236  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  CHSC11799  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville. In grassy swamp. 1550 Comment
  CHSC4222  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-22 314 Butte Found ca. 5 mi. NE Orovilla on top Table Mt.; 10 yds off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. Comment
  CHSC67288  Dodecatheon clevelandii subsp. patulum James D. Jokerst 1984-3-20 1952 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Comment
  HSC43131  Dodecatheon hendersonii Maralyn O'Meara 1974-4-20 285 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  UCSB63622  Dodecatheon hendersonii Skjelstad, L. 1975-4-20 Butte ca. 3.7 mi. S of Cherokee on the Cherokee Rd. Comment
  CHSC54566  Dopatrium junceum Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6668 Butte On the Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. 30 Comment
  HSC86818  Downingia bicornuta Andrew R. Shepard 1981-4-22 14 Butte About 15 mi. N of Chico and 900 ft. W of Singer Creek. 58 Comment
  RSA436094  Downingia bicornuta L. Ahart 1984-5-8 4599 Butte Ca. 2.5 miles N and 1.4 miles E of Honcut, ca. 12 miles S of Oroville. 40 Comment
  CHSC103734  Downingia cuspidata Lowell Ahart 2010-5-16 16690 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC76938  Downingia insignis Ida Ryan 1893-5-1 Butte Near Nelson. Comment
  JEPS119712  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  SEINET10448467  Draba verna Lowell Ahart 1984-2-27 Ahart 4497 Butte Peter Ahart Ranch, NE of Honcut, ca. 12 miles S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC114948  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  CDA40332  Draperia systyla G. D. Barbe, T. C. Fuller 1982-6-14 3684 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CAS-BOT-BC527353  Drymocallis glandulosa var. reflexa A. A. Heller 1913-6-7 10807 Butte Near Stirling 1074 Comment
  HSC23372  Dryopteris arguta Larry D. Scott 1971-4-17 27 Butte 4 mi. NE of Covered Bridge on the N side of Honey Run Rd. Comment
  CAS-BOT-BC536731  Duchesnea indica Lee Richardson 1939-6-3 s.n. Butte Established at Richardson's Springs 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
  CHSC34200  Dysphania ambrosioides J. D. Jokerst 1981-9-26 1490 B Butte Locally abundant in dry sand bars adjacent to and E of Sacramento River at the Bidwell River State Park (Chico Landing) ca. 5.0 mi W of Chico. Comment
  CHSC49539  Echinochloa colona Vernon Oswald 1987-8-13 3212 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. On the edge of a bean field. 48 Comment
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  SEINET8413190  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  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
  CHSC31697  Echinochloa crus-galli L. Ahart 1974-11-9 673 Butte In rice field. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET231760 Image available Echinochloa crus-galli L. Arhart 1984-9-17 4792 B Butte Peter Arhart Ranch ca. 2.3 mi N and 0.3 mi E of Honcut ca. 12 mi S of Oroville 50 Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CDA2008  Echinochloa crus-galli var. crus-galli Margaret Bellue 1947-8-23 Butte Near Biggs. 0 Comment
  SEINET10474220  Eclipta alba Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5147 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC291137  Eclipta prostrata Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  JEPS119523  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  CHSC113231  Elatine Lowell Ahart 2014-4-30 19419 Butte About 100 yards north of Dunstone Drive, about 3 1/8 miles (air) northeast of Honcut. 60 Comment
  CHSC115337  Elatine Lowell Ahart 2015-4-24 20067 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS98322  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station: field on S side of Hwy 162 between the railroad and Riceton Road 30 Comment
  RSA0112566  Elatine ambigua Lowell A. Ahart 2013-9-20 19061 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 31 Comment
  CHSC38434  Elatine brachysperma Vernon Oswald 1983-6-16 693 Butte Upper Bidwell Park, Chico in Horseshoe Lake. 100 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
  SEINET10447966  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 44596 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  RSA767490  Eleocharis acicularis var. acicularis L. Ahart 2010-6-9 16776 Butte Bottom of vernal pool, 10 yards north of poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4.5 air miles northeast of Oroville. 384 Comment
  POM313057  Eleocharis acicularis var. acicularis H. L. Mason, Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, Butte Sink Comment
  CAS-BOT-BC113490  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC116144  Eleocharis bella Lowell Ahart 2015-10-26 20597 Butte ################ 207 Comment
  CHSC76853  Eleocharis engelmannii L. P. Janeway 1999-6-26 6488 Butte Sacramento Valley. Sandy deposits along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 28 Comment
  UCD49589  Eleocharis engelmannii E. Dean; J. DiTomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads of buildings. Along east-west running dirt road. 30 Comment
  CHSC2111  Eleocharis macrostachya D. Bower 1953-7-23 Butte 3A Llano Seco. 30 Comment
  CHSC68429  Eleocharis macrostachya L. P. Janeway 1986-9-20 1883 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  CHSC78564  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS110042  Eleocharis obtusa var. obtusa Lowell Ahart 2006-10-8 13436 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  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
  CHSC31636  Elodea canadensis L. Ahart 1977-11-22 1610 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore 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
  CHSC38861  Elymus caput-medusae Vernon Oswald 1983-3-30 226 Butte Upper Bidwell Park, Chico, between the s dike of Horseshoe Lake and Upper Park Rd. 97 Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CHSC113955  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC227296  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  UCD80544  Elymus elymoides CNPS SN Foothill Team 2005-5-5 SNFN 0158 a Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  UC1609071  Elymus elymoides subsp. elymoides Lowell Ahart 1993-6-20 7005 Butte about 1 (air) mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CAS-BOT-BC204202  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls 1310 Comment
  CAS-BOT-BC204203  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1981-7-7 2928 Butte Ca. 0.5 mi. W of the Forbestown Res Ne of Forbestown 750 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  CHSC74161  Elytrigia intermedia subsp. intermedia B. Castro 1996-8-7 706 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  CHSC108856  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  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
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  SEINET10841098  Epilobium brachycarpum Mary Susan Taylor 1978-9-8 Taylor 1894 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS95175  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and the Sacramento River (Sacramento River National Wildlife Refuge, Llano Seco Unit, at s end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC32125  Epilobium canum subsp. latifolium L. Ahart 1975-9-4 970 Butte Along South Fork of Feather River ca. 0.5 mi n of Golden Trout Crossing. 762 Comment
  CHSC38571  Epilobium canum subsp. latifolium Vernon Oswald 1982-10-22 4 Butte Bidwell Park, Chico. E end of Centennial Ave at the locked gate leading to the Police Pistol Range. On face of cliff. 85 Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  CHSC113171  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC116143  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2015-10-26 20600 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile d(air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC41314  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-7-22 550 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD105782  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-19 s.n. Butte Chico. Comment
  CHSC113487  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte East 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
  CHSC111153  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28438  Epilobium cleistogamum J. D. Jokerst 1979-5-12 285 Butte Adjacent to Vernal Pools, ca. 1.0 mi. S.E. of Chico Muni Airport, E. of Cohasset Hwy. Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  CHSC40775  Epilobium densiflorum Lowell Ahart 1985-6-17 5058 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  CHSC105809  Epilobium hornemannii subsp. hornemannii Lowell Ahart 2010-9-21 17213 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC58932  Epilobium hornemannii subsp. hornemannii Lowell Ahart 1992-7-26 6854 Butte In a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC12170  Epilobium minutum Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC62572  Epilobium minutum L. P. Janeway 1993-5-2 4338 Butte South of Serpentine Point and above Hwy 70. Narrow ridge. 518 Comment
  CHSC90828  Epilobium minutum Lowell Ahart 2005-5-2 11764 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
  SEINET12194592  Epilobium minutum Unknown 1985-1 4970 Butte N of Oroville, W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd. and Rt. 70, N of Yankee Hill 503 Comment
  UC726202  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  JEPS38237  Epilobium torreyi W. L. Jepson 1934-5-4 16613 Butte 2 1/2 mi e Cana Comment
  JEPS115378  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC23649  Equisetum hyemale M. S. Taylor 1976-4-4 1049 Butte In middle of Old Humboldt Rd, ca. 2 mi w of Jonesville. 1706 Comment
  CHSC51034  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 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-BC213614  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34683 Butte Eastern outskirts of Oroville, Sierra Nevada Comment
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS113699  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte E side of Rockefeller Road, at the intersecton of Bald Rock Road and Rockefeller Road, about 13 mi (air) NE of Oroville 1011 Comment
  CAS-BOT-BC278511  Eragrostis pilosa var. pilosa Lowell Ahart 1977-8-14 1492 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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Jul 8 2014
  CHSC31612  Erigeron bonariensis L. Ahart 1975-7-1 828 Butte Around the barn, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  CAS-BOT-BC295420  Erigeron inornatus var. calidipetris H. F. Copeland 1920-8-12 123 Butte Jonesville 1219 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  CHSC113844  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC325  Erigeron philadelphicus B. Richardson 1929-4-29 Butte Bidwell Park. Comment
  CHSC44371  Erigeron strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  CHSC27256  Eriobotrya japonica P. Moyer 1971-2-1 79 Butte CSUC Campus. S bank Chico Ck., at base of sycamore tree, w of L.S.-Ed. Psych. Bridge. 60 Comment
  CHSC113805  Eriodictyon californicum M. Ocken 2011-4-25 Butte Butte Creek Ecological Preserve. 106 Comment
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  NY280796  Eriogonum heracleoides var. heracleoides C. L. Hitchcock 1960-6-12 22002 Butte 1 mi. N of Craters of the Moon National Monument. Comment
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Jul 31 2012
  CAS-BOT-BC259404  Eriogonum luteolum Harry A. George 1971-11-5 s.n. Butte Feather River, Oroville Barrow Area nr. Vance Avenue between Biggs & Oroville 40 Comment
  SEINET5330462  Eriogonum luteolum J. T. Howell 1959-9-20 34615 Butte along Feather River near Oroville 46 Comment
  CHSC45366  Eriogonum luteolum var. luteolum Vernon Oswald 1987-7-6 3097 Butte Butte Creek Reserve on the n side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CHSC50416  Eriogonum nudum var. pubiflorum Vernon Oswald; Lowell Ahart 1990-6-27 4337 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). On an open roadcut. 1109 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  SEINET11934611  Eriogonum nudum var. pubiflorum L. P. Janeway 1988-1 2967 Butte Pulga quad. nr. roadside into French Creek .6 mi S of Coyote Gap. Shaley SE-faceing ridge outcrop 1219 Comment
  SEINET10904446  Eriogonum umbellatum var. speciosum Mary Susan Taylor 1981-7-10 Taylor 4063 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CDA22699  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  CHSC332  Eriophyllum lanatum var. croceum 1954-5-30 Butte Below Concow Lake on road to Flea Valley. Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  RSA727541  Eriophyllum lanatum var. grandiflorum 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
  JEPS119787  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS115597  Erodium cicutarium Lowell Ahart 2009-4-22 15579 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-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  SEINET12118292  Eryngium vaseyi var. castrense Unknown 1936-1 13044 Butte along Mud Creek, near Chico Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC153870  Erythranthe glaucescens G. R. Campbell 1950-6-8 15488 Butte 6 miles southeast of Paradise Comment
  CHSC3281  Erythranthe guttata M. L. Hillier 1966-5-9 Butte In rd. side ditch. Humbug rd. 2 miles n. of covered bridge. Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. 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
  CHSC44069  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 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
  CHSC44766  Erythranthe primuloides R. Banchero 1980-6-26 274 Butte Banchero Meadows, 1.1 mi S of Inskip along the Skyway, 4.5 mi N of Stirling City. 1426 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
  CHSC2266  Erythronium multiscapideum R. M. Staley 1953-7-18 Butte Rush Creek. Comment
  CHSC32640  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3462 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC4196  Erythronium multiscapideum J. Senter 1967-4-10 11 Butte Located 150 yds. S. E. of covered bridge at base of slope, on Honeyrun rd. 60 Comment
  CHSC42009  Erythronium multiscapideum Lowell Ahart 1976-4-15 1080 Butte Along Swede's Flat Road, about 2 miles east of the Bangor Oroville Highway, north-east of Bangor. 457 Comment
  JEPS96566  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town 731 Comment
  HSC72760  Erythronium multiscapideum M. S. Taylor, D. V. Hemphill 1981-3-18 3422 Butte Near and W of bridge crossing W Branch of Feather River on Ponderosa Way 488 Comment
  POM109649  Erythronium multiscapideum C. C. Bruce 1897-04 2011 Butte Butte Creek Comment
  SEINET10528912  Erythronium multiscapideum Nelson 1979-4-24 NELSON s.n. 1979 Butte Population at vicinity of intersection of Coutelene Rd. and Skyway, 0.25 mi n of Magalia. Soil Serpentine. 3000 feet. 915 Comment
  CHSC38577  Eschscholzia caespitosa Vernon Oswald 1983-2-23 94 Butte Upper Bidwell Park, Chico, along Yahi Trail 400 ft w of Salmon Hole Parking Area. 146 Comment
  UC204875  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte 8 mi from Chico (on Chico-Centerville Rd, near Cutte Creek) Comment
  POM125703  Eschscholzia californica var. crocea C. C. Bruce 1897-05 2022 Butte Near Chico. Comment
  CHSC48614  Eucalyptus camaldulensis Vernon Oswald 1987-7-4 3090 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  JEPS122246  Euphorbia maculata Lowell Ahart 2014-9-23 19864 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CDA38820  Euphorbia peplus L. Ahart 2012-4-17 17877 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) sothwest of Oroville. Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC96930  Euphorbia spathulata Lowell Ahart 2007-6-3 13974 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC51352  Eurybia integrifolia Vernon Oswald 1990-7-28 4403 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 533 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC31589  Euthamia occidentalis L. Ahart 1977-9-20 1571 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC60481  Euthamia occidentalis K. R. Stern 1972-9-19 3783 Butte Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC113429  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS121967  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CDA13296  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13144 Butte Plumas National Forest; Occasional on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  SEINET10507962  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC278631  Festuca subulata Lowell Ahart 1988-7-31 6148 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  JEPS113262  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock 844 Comment
  CHSC1955  Foeniculum vulgare A. Goekler 1929-5-27 Butte Chico 57 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  UC129375  Fragaria vesca Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC46397  Frangula rubra subsp. obtusissima Lowell Ahart 1989-5-29 6311 Butte On the east side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 822 Comment
  CHSC87790  Fraxinus dipetala Paul Maslin 2004-3-29 7 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609199E 4407964N. 274 Comment
  JEPS119568  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC130315  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Along Milsap Bar Road, Plumas National Forest 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
  CHSC40077  Fritillaria recurva R. M. Austin 1896-5-1 Butte East of Chico. Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  POM109786  Fritillaria recurva C. C. Bruce 1897-02 2026 Butte Little Chico Comment
  CHSC99097  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  CHSC4194  Galium aparine Ann Dolder 1967-4-24 Butte Ca. 50 yards from road of Bare Hole, Bidwell Park, Chico. 76 Comment
  CHSC65585  Galium aparine L. P. Janeway 1995-6-6 4772 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northest of the falls of Feather Falls. 1054 Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC33583  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y (Bryant Ravine Rd), ca. 1 air mi N of Feather Falls. 792 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS115530  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and 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 273 Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  CHSC37262  Galium parisiense L. Ahart 1982-6-15 3582 Butte Ca. 1.5 mi E of camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC46405  Galium parisiense Lowell Ahart 1989-5-23 6259 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 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
  JEPS127073  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  UCD121849  Galium parisiense L. Ahart 1982-5-29 3446 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  CHSC31921  Galium porrigens var. tenue M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3380 Butte 20 ft E of Lumpkin Rd, on N side of Macabes Creek, ca. 2 mi N of jct of Lumpkin Road and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  UC889085  Galium trifidum A. A. Heller 1917-7-28 12842 Butte Butte Meadows 1280 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
  JEPS118052  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UC1609077  Galium trifidum var. pusillum Lowell Ahart 1993-6-26 7017 Butte about 1/4 mi w Lost Creek Reservoir (small meadow n of dirt road) 1036 Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of Guardian Trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CAS-BOT-BC282601  Gastridium phleoides Lowell Ahart 1988-8-24 6128 Butte At the intersection of Black Bart Road and Forbestown Road about 1 mile west of Robinson Mill Road 731 Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 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
  JEPS116001  Gastridium ventricosum Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  CHSC108324  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  SEINET10453073  Gayophytum heterozygum Mary Susan Taylor 1977-8-17 Taylor 1480 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC84630  Genista monspessulana A. Rutherford 2002-4-30 4 Butte Paradise Lake, Lucretia Road. Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC99325  Geranium carolinianum Lowell Ahart 2008-5-12 14753 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  JEPS119997  Geranium carolinianum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  SEINET10495121  Geranium dissectum Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4285 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  JEPS120522  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. Comment
  RSA29020  Gilia capitata Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC46391  Gilia capitata subsp. mediomontana Lowell Ahart 1989-5-29 6312 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  UC726809  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte just e Jarboe Pass (along the Feather River Highway, 22 mi from Oroville) Comment
  RSA713003  Gilia capitata subsp. pedemontana L. Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10869729  Gilia leptalea Mary Susan Taylor 1978-7-18 Taylor 1688 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC103676  Gilia tricolor subsp. tricolor Lowell Ahart 2010-4-30 16606 Butte Open are along a ridge, on both sides 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
  UC764582  Githopsis pulchella subsp. campestris R. F. Hoover 1937-5-18 2236 Butte 3 mi n Chico Comment
  POM74782  Githopsis pulchella subsp. campestris C. C. Bruce 1897-04 1832 Butte [No location data on label] Comment
  JEPS122248  Glinus lotoides Lowell Ahart 2014-9-23 19869 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-BC435024  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  CHSC93475  Glyceria declinata Lowell Ahart 2006-5-3 12564 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC34189  Glyceria elata L. Ahart 1981-9-15 3174 Butte On the bottom of a swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC28759  Glycyrrhiza lepidota J. D. Jokerst 1979-6-16 141 Butte Upper Bidwell Park, E. of Chico, alng Big Chico Cr. 167 Comment
  CHSC88067  Glycyrrhiza lepidota R. D. Fischer 2004-6-12 153 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in large meadow at the bottom of 10 Mile House Road, e. side of road and Big Chico Creek, near the gated end of the park property. 220 Comment
  CAS-BOT-BC303824  Gnaphalium M. S. Taylor 1977-11-12 1536 Butte In Devil's Kitchen, Upper Bidwell Park, ca 1 mile from end of road, Chico 243 Comment
  SEINET10473778  Gnaphalium chilense Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4226 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC302475  Gnaphalium palustre Clarence R. Quick 1963-7-16 63 55 b Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CHSC112706  Gnaphalium palustre Lowell Ahart 2013-10-26 19207 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC28684  Goodyera oblongifolia M. S. Taylor 1979-9-9 1920 Butte Inskip on the Skyway. 1467 Comment
  CHSC33666  Goodyera oblongifolia R. E. Preston 1981-7-28 114 Butte Ca. 5.0 km se of Butte Meadows. 1590 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  CHSC46860  Grindelia camporum var. camporum Vernon Oswald 1989-9-6 3980 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the ranch road and Little Dry Creek, ca. 0.4 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET267158  Grindelia camporum var. camporum T. A. Ranker, P. G. Trapp 1994-6-17 1625 Butte Pence Road south of Paradise. 395 Comment
  CHSC37365  Grindelia hirsutula var. davyi R. A. Schlising 1980-8-31 3976 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  JEPS98981  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  UC575328  Hackelia californica David D. Keck and J. Clausen 1935-6-25 3772 Butte 5 mi ne of Chaparral; Spring Valley Reservoir 1706 Comment
  CHSC28407  Hamamelis vernalis J. Battagin 1979-9-13 Butte Ca. 5 air mi due e of Big Bend Mt. Comment
  JEPS113886  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada; Along old Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry creek at North Fork Feather River (Lake Oroville); mostly above the road but also occasionally below. 421 Comment
  RSA81717  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles S of Cherokee on road to Oroville. Comment
  CAS-BOT-BC309403  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  UC600741  Helianthella californica subsp. nevadensis H. F. Copeland 1930-7-26 Butte Jonesville Jonesville (rocky peak above hotel) Comment
  CDA13704  Helianthus bolanderi G. F. Hrusa 1997-8-5 14063 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  SEINET10870095  Heliotropium europaeum Lowell Ahart 1983-9-17 Ahart 4426 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  JEPS124122  Hemizonella minima Lowell Ahart 2015-6-16 20227 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  UC186060  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte near Chico Comment
  RSA505367  Hemizonia fitchii R. C. Bacigalupi, G. Thomas Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak. 81 Comment
  CHSC90475  Hesperevax acaulis var. ambusticola Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC24954  Hesperevax caulescens T. F. Burnham 1976-4-20 12 Butte E side of Broyles Road, .7 mi n of Cana Pine Creek Road and Broyles Road intersection. 97 Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CHSC54876  Heteranthera limosa Vernon H. Oswald; Lowell Ahart 1991-8-28 4851 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  SEINET10972530  Heterocodon rariflorum James D. Jokerst 1980-7-18 Jokerst 0996 Butte Top of North Table Mountain, about 100 mile northwest of the fct.(?) of Cherokee Road and the east edge of the mountain Comment
  CAS-BOT-BC143635  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 899 Comment
  CHSC84637  Heteromeles arbutifolia Matt Quinn 2001-3-6 14 Butte Along Green Gate Road (10-mile House Road) on north facing slope on Big Chico Creek Canyon. Approximately 1/4 mile downslope from Highway 32. 365 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CHSC113981  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  RSA0119324  Heterotheca grandiflora Lowell A. Ahart 2014-11-17 19912 Butte Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 254 Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  CAS-BOT-BC310279  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
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  RSA0062974  Heuchera micrantha var. erubescens C. C. Bruce 1897-05 2041 Butte Iron Canyon. Comment
  CHSC33099  Hirschfeldia incana R. E. Preston 1981-1-20 31 Butte On the shoulders of River Rd., ca. 0.6 km se of Chico Cr., ca. 8.7 km wsw of Chico. Comment
  JEPS104590  Hoita macrostachya Lowell Ahart 2003-7-17 10420 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  RSA718739  Holcus lanatus L. Ahart 2006-7-25 13056 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC36109  Hordeum marinum subsp. gussoneanum K. Bridwell 1978-5-25 109 Butte Ca. 300 yds s of Pentz Rd, ca. 3 mi e of intersection with Hwy 99, ca. 12 mi se of Chico. 76 Comment
  SD149200  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2121 Butte Honcut, Peter Ahart Ranch 49 Comment
  CHSC38824  Hordeum murinum subsp. leporinum Vernon Oswald 1983-3-5 114 Butte Upper Bidwell Park, Chico, at the edge of the turn-around on the road to the Horse Arena. 82 Comment
  CAS-BOT-BC536260  Horkelia tridentata var. tridentata Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC50407  Hosackia stipularis var. ottleyi Vernon Oswald; Lowell Ahart 1990-6-27 4334 Butte Four Trees Rd 0.5 mi north of Coyote Gap. 1341 Comment
  UCD119493  Hydrophyllum occidentale M. S. Taylor 1980-5-4 1997 A Butte Along Millsap Bar Rd., ca. 4 mi ne of its jct with Brush Creek Rd, ca 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC38062  Hypericum anagalloides R. E. Preston 1982-6-23 308 Butte In meadow at edge of stream, Deadwood Creek at Dixie Valley Road. 999 Comment
  JEPS66777  Hypericum anagalloides H. R. Dutton 1921-1 Butte Chico, Hooker Oak Comment
  SD130456  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  RSA303857  Hypericum concinnum J. R. Shevock 1972-5-19 1764 Butte Hwy 70, near Lake Oroville. 30 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC38470  Hypericum perforatum Vernon Oswald 1983-5-31 588 Butte Upper Bidwell Park, Chico, on the bank of a dry oxbow ca. 200 ft w of Day Camp. 91 Comment
  CAS-BOT-BC401221  Hypericum perforatum Lowell Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  SEINET10472151  Hypericum perforatum Mary Susan Taylor 1975-6-25 Taylor 792 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC401336  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC50118  Iris hartwegii subsp. pinetorum Vernon Oswald 1990-4-30 4176 Butte Feather Falls Trail near the 2-mile marker, between Fray Creek and Wagners Valley. 445 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CHSC28828  Isoetes howellii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 420 Butte Top of North Table Mountain, ca 1.0 mi n of Cherokee Rd. Comment
  CAS-BOT-BC61879  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  SEINET10530333  Isoetes nuttallii Mary Susan Taylor 1984-4-6 Taylor 5399 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC78001  Isolepis cernua Lowell Ahart 2000-5-10 8334 Butte On the sides of a moist (seepy) swale, about 100 yards south of a deep wash, just east of a dirt road, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CAS-BOT-BC340246  Jensia rammii Lowell Ahart 1983-6-26 4157 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville 600 Comment
  SD135659  Juncus acuminatus Lowell Ahart 1980-8-18 2586 Butte Peter Ahart Ranch, Honcut. Foothill woodland. 49 Comment
  CHSC49604  Juncus articulatus Vernon Oswald 1987-6-8 2959 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  CHSC57153  Juncus articulatus L. P. Janeway 1987-6-19 2249 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
  CHSC38924  Juncus balticus subsp. ater Vernon Oswald 1983-5-18 507 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). In a drainage ditch. 103 Comment
  JEPS113864  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 A Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC112937  Juncus bufonius var. congestus B. Castro 2012-5-29 1925 Butte Sacramento Valley. Between hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  UC1594673  Juncus covillei var. obtusatus Lowell Ahart 1992-7-27 6863 Butte about 2 mi nw of Four Trees (about 2 mi ne of Coyote Gap, about 2 mi w of the Oroville-Quincy Highway, along Wildcat Creek); Wildcat Creek 1219 Comment
  CDA2697  Juncus diffusissimus L. Ahart 2000-7-18 8596 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS113870  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC107572  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
  CDA43012  Juncus effusus subsp. pacificus L. 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. Comment
  RSA755033  Juncus effusus var. pacificus L. Ahart 2009-6-30 15980 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC47554  Juncus howellii Lowell Ahart 1981-8-15 3047 Butte On the south side of the dirt road, about 1 mile east of Coon Hollow Road, southeast of Snag Lake, about 10 miles north of Inskip. 1524 Comment
  SEINET260324  Juncus howellii Lowell Ahart 1988-7-23 6071 Butte S of the intersection of Black Bart Rd and Forbestown Rd ca 1 mi W of Robinson Mill Rd 671 Comment
  CHSC116642  Juncus kelloggii Lowell Ahart 2016-4-15 20750 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
  SEINET10938189  Juncus leiospermus Mary Susan Taylor 1984-4-6 Taylor 5407 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC85421  Juncus leiospermus var. leiospermus John Dittes 1992-5-5 476 Butte Sierra Nevada Range Foothills; ca. 2.8 air-miles southeast of Paradise Civic Center, ca. 1.6 air-miles west of West Branch Feather River, ca. 1.1 air-mile northwest of Kunkle Reservoir; slope above (east of) tributary drainage of Dry Creek, southeast of terminus of Libby Road. 451 Comment
  CHSC50380  Juncus mexicanus Vernon Oswald 1990-6-6 4285 Butte East terminus of Dean Rd, Paradise, in the canyon of the West Branch of the Feather River at Upper Miocene Canal. Bordering the parking area at the canal. 472 Comment
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  UC600800  Juncus nevadensis H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC111094  Juncus occidentalis Peter F. Zika 2011-7-7 25542 Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH). 150 Comment
  RSA0119188  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC105959  Juncus parryi Lowell Ahart 2010-9-28 17258 Butte About 10 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  JEPS113768  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  CHSC39271  Juncus tenuis Lowell Ahart 1983-7-29 4219 Butte Found along the dirt road, about 2 miles south of Milsap Bar, about 23 miles northeast of Oroville. 750 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
  CHSC50698  Juncus tenuis Lowell Ahart 1990-5-25 6483 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC99817  Juncus tenuis Lowell Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  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
  CHSC99012  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  JEPS121377  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte above Oroville-Qunicy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill Comment
  UC103069  Keckiella breviflora Mrs. R. M. Austin May 1896 65 Butte Iron Canyon Comment
  CAS-BOT-BC237822  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 7/10 mi. NW. of Magalia at NW. side of Magalia Reservoir 731 Comment
  CHSC38694  Keckiella lemmonii Vernon Oswald 1983-6-17 698 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 200 ft w of the parking area at Day Camp. 91 Comment
  CHSC26685  Kelloggia galioides M. S. Taylor; R. A. Schlising, M. Hayes 1977-8-17 1484 Butte At Butte-Tehama County line, ca. 100 ft W of Old Humboldt Rd, on Butte side. 2133 Comment
  CDA31990  Kickxia elatine L. Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. Comment
  CHSC109754  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  SEINET13711424  Kickxia elatine Lowell William Ahart, Lowell William Ahart 1999-1 8132 Butte 12 Air Mi SW of Chich, 2 Mi SE Ordbend, Sacramento River Comment
  UCD123843  Kickxia elatine L. Ahart 1974-6-3 475 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC48295  Kochia scoparia Vernon Oswald 1984-10-26 1679 Butte Bell Rd. at the PG and E Substation e of Mud Creek Diversion Channel. 45 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  UCD133503  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC46947  Lagophylla glandulosa Lowell Ahart 1977-9-20 1584 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS115875  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UC726005  Lagophylla glandulosa A. A. Heller 1941-11-8 16336 Butte along Feather River Highway about 20 mi e Oroville (just w of Jarboe Pass on roadside banks) Comment
  POM194883  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise. 213 Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC50314  Lagophylla ramosissima subsp. ramosissima Vernon Oswald; Mary Bailey 1990-5-19 4221 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows', ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 137 Comment
  CHSC31382  Lamarckia aurea J. D. Jokerst 1979-4-20 1207 Butte Top of North Table Mt., ca. .75 mi NE of the junction of Cherokee Rd and the E edge of mountain. 396 Comment
  CHSC100986  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  UCSC004635  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte T20N, R3E, northeast 1/4 Section 24, south of a small stream, open pasture field, a bout 1 mile south of Beatson Hollow, about 1.5 miles southwest of the poor dirt road off Cherokee Road, south part of North Table Mountain, about 7 milse (air) north of Oroville 281 Comment
  SEINET9327375  Lasthenia fremontii Unknown 1988-4-20 303 Butte Near Chico, along hwy 99 in pasture, 2.5 km S of Meridien Rd. on E side of the rd Comment
  UC725646  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte 1 mi n Rock Creek (along the road e of U.S. Highway #99E) Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  HSC67550  Lasthenia microglossa J. P. Smith 1973-3-22 5919 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD73064  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  CHSC117437  Lathyrus angulatus Lowell Ahart 2016-5-30 20896 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east ofd Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS122007  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 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. Comment
  CAS-BOT-BC213338  Lathyrus jepsonii subsp. californicus H. E. Brown 1897-4-15 213 Butte Near Clear Creek Comment
  CAS-BOT-BC213348  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  RSA21632  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 2852 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  SEINET956034  Lathyrus nevadensis E. B. Copeland 1931-1 654 Butte Jonesville. 457 Comment
  RSA726482  Lathyrus sulphureus L. Ahart 2007-4-30 13708 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  RSA633307  Layia fremontii Michael A. Vincent, Ethan H. Freid 1998-4-6 8113 Butte Table Mountain Comment
  UC894089  Layia fremontii A. A. Heller 1914-4-14 11235 Butte 8 mi n Oroville Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  CAS-BOT-BC274351  Leersia oryzoides John Thomas Howell 1959-9-20 34650 Butte Eastern outskirts of Oroville 60 Comment
  CHSC103169  Lemna minuta Lowell Ahart 2009-11-19 16556 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  RSA718342  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about 1 mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  SEINET10474774  Leontodon leysseri Mary Susan Taylor 1977-8-16 Taylor 1444 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC115325  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Below the high water line of Lake Oroville, Vinton Gulch, about 10 miles (air) north of Oroville. 307 Comment
  CHSC35633  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  UCD115866  Lepidium pinnatifidum M. S. Taylor; L. Ahart 1982-10-11 5154 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  POM183170  Lepidium virginicum var. pubescens H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  JEPS103330  Leptochloa fascicularis Lowell Ahart 2002-9-7 9929 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  CHSC109164  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC1285  Leptosiphon filipes J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 76 Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  CHSC23593  Lessingia nana L. Thomas 1972-9-26 501 Butte Upper Bidwell Park, Chico; ca. 1/2 m e of Omicron study plot. Comment
  CHSC69448  Lessingia nemaclada Lowell Ahart 1997-9-6 7887 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC27621  Lessingia virgata Robert A. Schlising 1977-10-9 3208 Butte Cohasset Road S of Cohasset, 3.0 mi NE of road to Richardson Springs and 3.3 mi NE of crossing of Mud Creek. Roadside. Comment
  JEPS17913  Lessingia virgata Rimo Bacigalupi with G. T. Robbins 1955-7-22 5442 Butte 2.5 mi s Oroville (n-facing hillside along Calif. Hwy. no. 24, at junction of road to Palermo) 48 Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  JEPS117418  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 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 1886 Comment
  CHSC27244  Ligustrum henryi P. Moyer 1972-5-7 193 Butte CSUC Campus. Front old L.S. Bldg. between bike path and bike parking. 60 Comment
  JEPS117406  Lilaea scilloides Lowell Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte 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
  CHSC88572  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  HSC93980  Limnanthes douglasii subsp. rosea Mary Drumm 1996-3-17 16 Butte 10 mi. N of Chico on Hwy. 99 where 99 intersects Hamilton Norde Cana Rd. 61 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  HSC87203  Limnanthes floccosa subsp. californica J. D. Jokerst 1985-3-30 2188 Butte N edge of county, throughout this quarter section and N into Tehama Co. to edge of Blue Oaks 122 Comment
  CHSC55505  Limnanthes floccosa subsp. floccosa Pat Kelly 1991-3-31 Butte Arroyo Chico.' Along the southern branch of Sycamore Creek, from a few hundred feet east of the mouth of the Diversion Channel eastward to the power lines (ca 0.8 mi long). 82 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
  UC1181372  Linanthus ciliatus Lewis S. Rose 1945-5-12 45029 Butte Richardson Springs 304 Comment
  CHSC3960  Linanthus dichotomus E. P. Parreno 1967-3-30 28 Butte Upper Bidwell Park Road near the Mun. Golf Course. Comment
  CHSC47039  Linanthus dichotomus R. A. Schlising; J. D. Jokerst 1985-4-8 4462 Butte N of Hwy 70 crossing of Lake Oroville and SW of village of Yankee Hill. Comment
  UC124911  Linanthus dichotomus Mrs. R. M. Austin May 1883 32 Butte Comment
  JEPS87152  Linanthus harknessii Lowell Ahart 1992-7-29 6887 Butte about 0.75 mi nw Lotts Lake (near Coon Hollow Creek, about 1 mi ne of the Carr Mine) 1798 Comment
  JEPS108132  Linaria genistifolia subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area 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 293 Comment
  UC885983  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 mi n of Oroville Comment
  UCD123914  Lindernia dubia Bill B. Fischer 1977-8-23 s.n. Butte Biggs Rice Experiment Station. Comment
  CHSC113530  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC51019  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte 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
  RSA726854  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, aout 3/4 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  UC600471  Linum lewisii H. F. Copeland 1932-7-24 Butte w rim of Butte Creek drainage above Butte Creek Meadows (Jonesville); , Butte Creek drainage Comment
  CHSC78930  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC85158  Lipocarpha aristulata John Dittes 2003-10-8 843 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC76428  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 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
  SEINET10477991  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1980-5-27 Taylor 2642 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
  SEINET10871263  Lithophragma Mary Susan Taylor 1981-5-13 Taylor 3695 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite 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 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  POM219578  Lithophragma bolanderi H. F. Copeland 1923-3-16 47 Butte [Unspecified] Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  CHSC50343  Lithophragma campanulatum Vernon Oswald 1990-5-29 4267 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC60587  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1993-4-19 5276 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. Near the trailhead on Jordan Hill Rd. 707 Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 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
  CHSC32647  Lithospermum californicum M. S. Taylor; L. Hanson 1981-3-16 3403 Butte Just off tractor-fire road, ca. 1/4 mi n of 21N80, ca. 1/2 mi nw of its jct with Zink Rd, ca. 2 air mi sw of Brush Creek. 944 Comment
  UC480673  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville Jonesville (<rocky point above hotel>) 1676 Comment
  UCR190828  Lithospermum californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CDA43081  Lobularia maritima L. P. Janeway 2011-10-2 10779 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CAS-BOT-BC283387  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  CHSC4377  Lolium multiflorum M. M. Gregg 1966-5-21 171 Butte NW corner of CSC campus around the artificial ski jump. Chico. Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC116706  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  SD116547  Lomatium tomentosum Barbara Ertter, Jeffery Strachan and Lowell Ahart 1980-5-8 3317 Butte North Honcut Creek on Peter Ahart Ranch around 2I(c) miles northeast of Honcut between Marysville and Oroville 45 Comment
  CHSC77417  Lomatium utriculatum Laura Bogni 1997-3-25 23 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  CHSC109073  Lonicera japonica Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte On the north side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET12162063  Lotus micranthus Unknown 1972-1 s.n. Butte N side of Hwy 32 ca 12.5 mi E of Hwy 99 overpass Comment
  UC1562277  Lotus nevadensis Lowell Ahart 1990-7-4 6539 Butte 0.5 mi sw Enterrpise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Sierra Nevada, Lake Oroville 243 Comment
  UC866486  Lotus nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows 1402 Comment
  SEINET3696861 Image available Lotus purshianus A. A. Heller 1938-7-20 15289 Butte Upper end Snag Lake, 7 miles east of Chaparral 1524 Comment
  SEINET10452009  Lotus purshianus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4204 Butte T19N R7E sec 6. Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. Yellow Pine Forest; 550 m. 550 Comment
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  CHSC76002  Ludwigia palustris Lowell Ahart 1999-8-22 8186 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC97334  Ludwigia palustris L. P. Janeway 2007-8-6 9149 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Common matted plant on the floor of the pond where water level has dropped, especially closer to the edge of the pond. 776 Comment
  CHSC1135  Ludwigia peploides subsp. peploides D. Bower 1953-7-16 Butte 3A Llano Seco. Marsh. 30 Comment
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  CHSC95163  Lupinus albicaulis R. D. Fischer 2004-6-20 816 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 to Chico Meadow (Camp Lassen, BSC) on Scout Road. 1280 Comment
  SEINET10452614  Lupinus albicaulis Lowell Ahart 1985-5-10 Ahart 4949 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CAS-BOT-BC201352  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CAS-BOT-BC196255  Lupinus albifrons var. eminens A. A. Heller 1938-4-23 15050 Butte Along Highway #24, near the junction with the Yankee Hill road Comment
  SEINET5558506  Lupinus andersonii H. S. Gentry, S. Koch 1962-1 19781 Butte Forest Ranch, along Rt. 32. Comment
  CHSC25004  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  UCD77845  Lupinus bicolor Robert E. Preston 2004-3-23 2207 Butte Chico, SW of jct Humboldt Rd and Bruce Rd 79 Comment
  SEINET10484853  Lupinus bicolor Barbara J. Ertter, Jeffrey Strachen; Lowell Ahart 1980-5-7 Ertter 3306 Butte North Table Mountain ca 5 airmiles north of Oroville, flat-topped basalt butte, near parking area. 396 Comment
  CHSC38505  Lupinus bicolor var. tridentatus Vernon Oswald 1983-3-6 120 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). Growing along the edge of Upper Park Rd. 219 Comment
  SEINET10485237  Lupinus densiflorus var. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20n r3e ne1/4ne1/4 sec 22. Oroville quad. Nw corner of jct of hwy 70 with Hwy 149, at wicks corner, ca 4 mi. N of oroville. Assoc: trifolium hirtum. 91 Comment
  CHSC39277  Lupinus latifolius var. columbianus Lowell Ahart 1983-7-29 4235 Butte Along the dirt road, about 1.4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UC1564806  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-7-12 3847 Butte ca 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  CHSC33129  Lupinus microcarpus var. microcarpus J. D. Jokerst 1981-4-29 1301 Butte Adjacent to entrance road to Butte College Campus from Pentz Road. 76 Comment
  UC726774  Lupinus nanus A. A. Heller 1938-4-23 15046 Butte along the Feather River Highway near the bridge over the <Feather> River e Oroville; along the Feather River Highway nr bridge over river Comment
  POM253156  Lupinus nanus subsp. latifolius A. A. Heller 1938-4-14 15034 Butte Summit of Table Mountain. 610 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
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  CHSC42529  Lupinus polycarpus Lowell Ahart 1987-5-6 5523 Butte Along the road, near the Poe Power House on the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 277 Comment
  RSA32772  Lupinus polyphyllus subsp. superbus A. A. Heller 1938-7-20 15279 Butte Upper end of Lake Snag, 7 miles east of Chaparral 1524 Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  UC726320  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte near De Sabla; near De Sabla Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  POM196138  Luzula comosa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  UCD80390  Luzula comosa CNPS SN Foothill Team 2006-3-23 SNNR 1198 Butte CDPR Oroville State Recreation Area. 292 Comment
  CDA34742  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 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 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC67312  Luzula macrantha James D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1563 Butte Ca. 2.5 air miles E of Forbestown along road to Forbestown Reservoir, on a steep slope just S of an unnamed creek. Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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Jun 21 2007
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC35002  Lychnis coronaria R. A. Schlising; J. D. Jokerst 1980-7-2 3817 Butte E of Forest Ranch, 0.2 miles SW of crossing of Butte Creek. Roadside. 640 Comment
  CHSC84175  Lychnis coronaria Lowell Ahart 2003-7-12 10374 Butte On both sides of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  UCD124964  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 air miles north of Oroville. 403 Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  CHSC39330  Lythrum hyssopifolia Lowell Ahart 1983-6-26 4132 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. 500 Comment
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  UC1562302 Image available Lythrum salicaria Lowell Ahart 1990-7-22 6575 Butte Palermo, on bottom of Wyman Ravine, on e side of Lincoln Boulevard Wyman Ravine; Palermo, , Lincoln Boulevard 45 Comment
  UC1586543  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 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
  JEPS115612  Madia elegans Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CHSC60955  Madia elegans subsp. elegans Lowell Ahart 1993-6-20 6998 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west pf the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  SEINET10971183  Madia glomerata Mary Susan Taylor 1977-8-17 Taylor 1456 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  JEPS122082  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  RSA0035822  Madia rammii Lowell A. Ahart 2008-6-13 14823 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10474829  Madia rammii Mary Susan Taylor 1976-5-3 Taylor 1102 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC6612  Magnolia M. MacArthur 1968-6-13 312 Butte SW of bridge b PSA building, along NW side of Big Chico Creek, Chico State College campus. 60 Comment
  CHSC6010  Magnolia grandiflora M. MacArthur 1968-6-19 251 Butte Front Lawn Administration Building, Chico State College. 60 Comment
  CHSC27220  Magnolia soulangeana P. Moyer 1972-3-2 97 Butte Front lawn Bidwell Mansion. 60 Comment
  SEINET10833525  Mahonia dictyota Mary Susan Taylor 1981-4-8 Taylor 3513 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
  SEINET12050643  Maianthemum racemosum subsp. amplexicaule Unknown 1986-1 993 Butte ca 0.3 mi N of road jct below Humboldt Peak, extreme N of county, near Scotts John Creek Comment
  CDA13327  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13173 Butte Sierra Nevada; S end of 22N89. Approx. 0.5 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. 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
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC3467  Marah fabacea var. agrestis Roger Jaegel 1966-3-2 17 Butte 4 miles northeast of Chico. Along the bank of Big Chico Crk. Upper Bidwell Park. Comment
  CHSC3643  Marah fabacea var. agrestis Alice L. Stoll 1966-2-26 25 Butte About 80' N. E. Of Manzanita Ave. on Centennial Ave., Chico. Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC60580  Marah watsonii Vernon H. Oswald; Lowell Ahart 1993-4-21 5287 Butte Middle of 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. 707 Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 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
  HSC32657  Marsilea vestita Dave Knorr 1974-4-20 114 Butte 1 mi. E of Hwy. 99 S of Chico on Skyway Rd. Comment
  CHSC105266  Marsilea vestita subsp. vestita Lowell Ahart 2010-6-20 16821 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  UC672620  Marsilea vestita subsp. vestita Herbert L. Mason 1927-5-9 3706 Butte 15 mi w Oroville; Sacramento Valley Comment
  SEINET10474310  Matricaria matricarioides Mary Susan Taylor 1975-4-11 Taylor 456 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CAS-BOT-BC348265  Matricaria occidentalis M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CHSC2397  Meconella californica R. Carter 1965-3-14 164 Butte 457 Comment
  CHSC4621  Meconella californica R. Carter 1966-3-13 296 Butte Found ca. 6 mi. E of Chico at intersection of Honey- Run Rd. and Humbug Rd. in Butte Cr. Canyon. Growing at margin of open area 50 yds. up slope on S side of canyon. Comment
  SD8258  Meconella californica Mrs. R. M. Austin 1880-1 Butte Comment
  UC1601097  Meconella californica Mrs. Austin 1883-1 47 Butte hills W of Chico Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CHSC944  Medicago polymorpha E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  JEPS115844  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCR237328  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18738 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCD106751  Medicago rigidula P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  CHSC74167  Melica aristata B. Castro; L. Gehrung 1998-8-19 823 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on top and upper sides of ridge E of Get-Up-and-Get Creek. 1213 Comment
  RSA700242  Melica aristata L. Ahart 2004-7-23 11299 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 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  SEINET175798  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville Butte County. 1550 Comment
  CAS-BOT-BC269373  Melica californica Lowell Ahart 1987-5-9 5581 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC8255  Melica californica Dave Isle 1969-4-10 295 Butte In meadow above the N. shore of Horseshoe Lake in Upper Bidwell Park E. of Chico. 59 Comment
  CHSC36067  Melica geyeri J. D. Jokerst; R. A. Schlising 1982-6-4 1586 Butte N of Concow Basin. 853 Comment
  CAS-BOT-BC281304  Melica harfordii M. S. Taylor 1978-7-21 1807 Butte On N side of Oroville - Quincy Highway , ca 9 miles N of Lake Madrone 914 Comment
  CHSC110474  Melica harfordii L. P. Janeway 2013-5-19 11107 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +-overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CAS-BOT-BC281019  Melica stricta Lowell Ahart 1981-8-15 3049 Butte At base of cliffs near the dirt road from Coon Hollow to Poison Springs, ca 1 mile SE of Snow Mt, ca 15 miles NE of Inskip 2000 Comment
  RSA4653  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  CHSC96427  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  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
  JEPS98987  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte On the south side of Biggs-Princeton Road, about 1/2 mile east of Butte Creek, about 8 miles west of Biggs. 21 Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC48486  Mentha X piperita Vernon Oswald 1987-7-23 3147 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC89463  Mentha canadensis R. D. Fischer 2004-7-21 450 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  UC480654  Mertensia ciliata H. F. Copeland 1931-6-11 1529 Butte Kirby Meadows 1981 Comment
  CHSC43753  Micranthes bryophora Vernon Oswald 1984-7-12 1576 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CAS-BOT-BC428767  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  UCR187081  Micropus californicus Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 012 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
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  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
  JEPS115318  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  UCD80104  Microseris douglasii subsp. douglasii CNPS SN Foothill Team 2005-4-13 SNFN 0080 c Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock. The plot location on the ranch is near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CHSC83935  Microseris sylvatica L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7756 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.9 km north of the Spillway Boat Ramp. 280 Comment
  RSA535779  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte Table Mt. 0.5 mi s of Derrick Road along cherokee Road, E side of road 396 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 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
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  SEINET10929282  Mimulus floribundus Mary Susan Taylor 1980-10-6 Taylor 3361 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  SEINET12326956  Mimulus glaucescens Unknown 1978-1 20 Butte ca 30 ft E of Skyway Rd ca 4 mi NE of Butte Creek bridge between Chico & Paradise 229 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  RSA409258  Mimulus kelloggii J. H. Morrison 1932-5-30 s.n. Butte Durham. 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
  CHSC31022  Mimulus moschatus M. S. Taylor 1980-10-6 3361 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  JEPS107746  Mimulus 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
  JEPS4246  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte 7 mi from Chico (Chico-Oroville road) Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  CHSC6292  Minuartia californica W. O. Baum 1967-3-12 6 Butte In triangle area, on e side of Cohasset Rd. and 3.2 mi n of Chico. 60 Comment
  CHSC93501  Minuartia cismontana Lowell Ahart 2006-5-8 12591 Butte About 200 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 347 Comment
  RSA424440  Minuartia douglasii Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -11 Butte Magalia, near Skyline road to Paradise 640 Comment
  JEPS124254  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA755371  Mollugo verticillata L. Ahart 2009-8-13 16274 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  UCD99635  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC726051  Monardella breweri subsp. lanceolata A. A. Heller 1938-7-2 15244 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway Comment
  SEINET10498923  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4255 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  JEPS107530  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  JEPS108795  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  JEPS115380  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, 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
  JEPS87413  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1609442  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  CAS-BOT-BC318613  Monardella villosa subsp. subserrata Clare B. Hardham 1975-6-7 20442 Butte Lime Ridge N of Oroville (Magnolia Road). Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  CHSC34130  Monochoria vaginalis L. Ahart 1981-9-19 3193 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w of Hwy 99 on Hwy 162, ca. 3 mi n of Biggs. 35 Comment
  SEINET10528526  Monochoria vaginalis Vernon H. Oswald, Lowell Ahart 1991-8-28 Oswald 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca 3.5 miles north-northwest of Biggs. Locally abundant emersed aquatic on the margins of rice fields. T19N R2E nw/S34, 100 feet agricultural area. Comment
  UC1564781  Monolepis nuttalliana V. Oswald and L. Ahart 1989-6-27 3833 Butte ca. 3.3 mi. (air) s.e. Jonesville (Humbug Rd. at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CAS-BOT-BC444891  Montia fontana L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. 1798 Comment
  CHSC1376  Montia fontana subsp. chondrosperma V. Holt 1941-3-1 Butte Table mountain near Oroville. 426 Comment
  SEINET10572724  Montia fontana subsp. chondrosperma Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5384 Butte T23N R3E se sec 33? S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. Foothill Woodland; 1220 ft elev. 372 Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  CHSC61992  Montia parvifolia Lowell Ahart 1993-7-22 7079 Butte In the campground on the west side of the bridge across Fall River, about 9 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC113395  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  SD264  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville, open wet ground 1550 Comment
  CHSC44274  Myosotis discolor V. Oswald; L. Ahart 1988-6-17 3406 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Near the creek where it flows through a meadow. 1066 Comment
  RSA755637  Myosotis discolor L. Ahart 2009-5-15 15717 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC54344  Myosurus minimus subsp. apus Lowell Ahart 1991-5-20 6656 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
  UC1101487  Myriophyllum hippuroides Herbert L. Mason and Verne Grant 1946-8-14 13014 Butte Canal near big pond on Sacramento Outing Club, Butte Sink. Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CDA34496  Nasturtium officinale Stewart, Michael 2011-4-26 PDR# 1373326 Butte In the vicinity of Gridley, on Locust Street near Georgia and Idaho Street. Comment
  SEINET12290261  Navarretia divaricata Unknown 1982-1 3533 Butte 1.5 mi E of camp 18, about 8 air mi E of Feather Falls 1280 Comment
  CHSC89480  Navarretia filicaulis Jenny Marr 1994-7-6 211 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  RSA699921  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where the road goes east to the water ditch, about 0.5 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  SBBG128187  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Guardian Rock Trail, ca. 0.25 mi (air) SW of the intersection of Ten Mi House Rd and Hwy 32, Upper Bidwell Park, ca. 10 mi NE of Chico 398 Comment
  UCD37443  Navarretia heterandra Beecher Crampton 1960-6-15 5623 Butte Butte County, 10 miles southeast of central Chico. Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom 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
  SEINET7072733  Navarretia intertexta subsp. intertexta A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico on Route 99. UTM Zone 10, 612125mE, 4386570mN. Coordinate datum: NAD 27.) Comment
  UC426937  Navarretia leptalea subsp. leptalea E. B. Copeland 1930-6-28 444 Butte Scotch John meadow , Scotch John Meadow (Jonesville) 1650 Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC88962  Navarretia leucocephala subsp. leucocephala Christine Hantelman 2000-4-8 70 Butte On vernal pool preserve between Oroville airport runway and Table Mountain golf course. On margin of pools. 60 Comment
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CAS-BOT-BC233624  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC31827  Navarretia pubescens L. Ahart 1977-5-8 1362 Butte Peter Ahart Ranch, Honcut. In pasture fields. 50 Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  JEPS117327  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico 144 Comment
  CHSC29399  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-6-17 3724 Butte N of Magalia and De Sabla along Skyway, ca 1.5 mi SW jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC60973  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS18533  Nemacladus capillaris Rimo Bacigalupi with Howard Whisler 1957-7-26 6042 Butte 3.1 mi s and below Nimshew (along Humbug Road) 365 Comment
  SEINET12331843  Nemacladus capillaris Unknown 1985-1 5059 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi north-east of Feather Falls 975 Comment
  CHSC31111  Nemophila maculata Leslie Steidl 1980-4-10 16 Butte Ca. 18.5 mi ene of Oroville, ca. 3.25 mi e of Lumpkin Rd., ca. .5 mi w of Lake Oroville, ca. 1.25 mi n of old railroad grade, ca. 6 yd se of dirt road. 353 Comment
  CHSC113103  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC110411  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chioco. 76 Comment
  JEPS44059  Oenothera elata subsp. hirsutissima W. L. Jepson 1939-8-17 19458 Butte near Oroville; Feather River 45 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  CAS-BOT-BC500246  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  UC1609005  Orthilia secunda Lowell Ahart 1993-9-13 7236 Butte near Bolt Creek, about 1 mile south east of Butte Meadows 1325 Comment
  RSA189382  Orthocarpus attenuatus L. S. Rose 1967-5-6 67055 Butte Oroville. 52 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  POM43591  Orthocarpus erianthus R. M. Austin 1883-03 28 Butte [No location information provided.] Comment
  POM252807  Orthocarpus hispidus A. A. Heller 1938-7-20 15287 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  CHSC70827  Osmorhiza chilensis Vernon Oswald 1998-4-12 8903 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  SEINET10454517  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4697 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC1173  Oxalis corniculata M. Harless 1930-3-15 Butte Chico. 57 Comment
  CHSC42642  Oxypolis occidentalis Vernon Oswald 1985-8-4 1925 Butte Slightly w of the Skyway 1.4 mi s of Inskeep. 1424 Comment
  UCD77993  Packera eurycephala Robert E. Preston 2001-7-9 1672 Butte Magalia, on serpentine outcrops along e side of The Skyway, between Coutelenc Rd and Magalia Dam, 682 Comment
  CAS-BOT-BC316891  Packera eurycephala var. lewisrosei John Thomas Howell 1959-9-26 35092 Butte Pulga Bridge, north fork Feather River Comment
  CHSC35669  Packera eurycephala var. lewisrosei R. E. Preston 1982-4-22 260 Butte Lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  UC492749  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CAS-BOT-BC253699  Panicum capillare John Thomas Howell 1959-9-20 34654 Butte Eastern outskirts of Oroville 60 Comment
  CHSC116287  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CHSC47624  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut. 42 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS120150  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CHSC95059  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern High Sierra Nevada Foothills. Abundant on the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  UCD77900  Parentucellia viscosa Robert E. Preston 2003-5-11 2131 Butte ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
  JEPS43469  Parvisedum pumilum Joan O. Danielson 1966-4-6 30 Butte Table Mountain 609 Comment
  CHSC38840  Paspalum distichum Vernon Oswald 1983-6-27 776 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC1842  Pedicularis densiflora R. Carter 1965-3-15 165 Butte Found on bank above road on SE corner of intersection of Oroville-Forbestown Rd. and Swedes Flat Rd. ca. 10.5 mi. E of Oroville. 502 Comment
  CHSC32661  Pedicularis densiflora M. S. Taylor; L. Hanson 1981-3-8 3402 Butte On s side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. 1005 Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  CHSC45734  Pedicularis densiflora J. Marr 1988-3-31 17 Butte 1 mi n of Concow Rd, 6 mi w of Hwy 70, 18 mi n of Oroville. 609 Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC725511  Pedicularis densiflora A. A. Heller 1939-3-23 15358 Butte Paradise Comment
  SEINET13753689  Pedicularis densiflora M. J. Williams 1967-4-15 s. n. Butte Jarbe Gap 701 Comment
  CDA41862  Pedicularis racemosa L. Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 (air) southwest of the Sly Creek Reservoir Dam. Comment
  CHSC23329  Pellaea mucronata Mark Stopher 1976-7-11 31 Butte Collected in Butte Creek Canyon. On the north side of the canyon opposite the Black Diamond Mine. 731 Comment
  CHSC29102  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1980-4-27 2547 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  JEPS34384  Penstemon azureus Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8860 Butte 0.75 mi s Pulga (above side road off U.S. highway 40 in canyon of the N Fk Feather River, just before bridge across Feather River, northern base grade over Jarbo Gap); canyon of N Fk of Feather River, grade Jarbo Gap 426 Comment
  UC406903  Penstemon azureus var. angustissimus David D. Keck 1928-6-16 451 Butte 1.5 mi s Berry Creek Inn; Sierra Nevada, s of Berry Creek Inn 609 Comment
  SEINET10824302  Penstemon azureus var. azureus Lowell Ahart 1987-5-9 Ahart 5580 Butte Along Pulga Road, about 1/4 mile West of Bardees Bar along the North Fork of the Feather River, about 2.5 miles South-West of Pulga. 366 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  UC398654  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte seven mi n Chico (along Rock Creek); , n of Chico Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC87976  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  POM195087  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral. 1646 Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC426949  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  SEINET10548068  Penstemon newberryi Mary Susan Taylor 1980-8-2 Taylor 3217 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC101286  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC108170  Perideridia kelloggii L. P. Janeway 2011-8-18 10664 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC38744  Perideridia kelloggii Vernon Oswald 1983-6-7 644 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
  JEPS113502  Perideridia lemmonii Lowell Ahart 2007-7-8 14267 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 53 Comment
  CHSC31065  Perideridia parishii subsp. latifolia M. S. Taylor 1978-7-19 1788 Butte On n end of Snag Lake between creek and Humbug Rd, ca. 3 mi s of jct of Humbug Rd and Scotts John Rd. 1920 Comment
  CHSC1343  Persicaria amphibia V. Holt 1942-6-7 Butte Near Chico. Comment
  CAS-BOT-BC418953  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD99569  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte 8 miles north of Oroville Comment
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC40034  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On a steep gravelly slope about scattered shrubs on the Feather River Highway 23 miles from Oroville. Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  RSA31961  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  CHSC46720  Phacelia imbricata R. A. Schlising 1982-7-28 4356 Butte Plumas National Forest, SE of Pulga and S of Coyote Gap Station. 838 Comment
  CHSC59549  Phacelia imbricata Lowell Ahart 1992-9-20 6922 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 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
  CHSC8262  Phalaris caroliniana K. Henegar 1969-5-9 37 Butte 4 m N of Highway 162 on road Z. Rice lands. Comment
  JEPS94650  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET10658606  Phalaris caroliniana A. Arthur Heller 1902-5-3 Heller 5447 Butte Near Nelson Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 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
  CAS-BOT-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC2174  Phalaris paradoxa H. Silberman; D. Isaac 1949-5-19 Butte Grey Lodge State Game Refuge. 24 Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  SEINET10716718  Phalaris paradoxa A. Arthur Heller 1914-5-13 Heller 11391 Butte Nelson Comment
  SEINET10657620  Phleum pratense Mary Susan Taylor 1982-1 Taylor 4728 Butte T33N R5E nw1/4se1/4 sec 30. Pulga SW quad. Weedy around large landing on saddle of ridde se of Flea Mt, n of Pulga. ca. 5 air mi e of Magalia. With Malacothrix floccifera, Onobrychis, Madia, Rumex acteosella, Penstemon. 1097 Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  CHSC35096  Phlox speciosa subsp. occidentalis Robert A. Schlising; Coleta Lawler 1981-4-12 4025 Butte E of Oroville. 365 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
  CAS-BOT-BC135098  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  SEINET12230385  Phoradendron juniperinum L. Ahart, Ahart, P. 1985-1 5169 Butte about 2 mi W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville 914 Comment
  CAS-BOT-BC141248  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2624 Butte Little Bald Rock 335 Comment
  CHSC101261  Phoradendron villosum Lowell Ahart 2009-4-17 15559 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
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC55062  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 6725 Butte On the south end of the dam at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC4299  Phyllostachys bambusoides R. L. Smith 1966-5-25 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  CHSC31212  Physalis acutifolia M. S. Taylor 1980-7-6 3060 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
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Aug 7 2007
  SBBG121212  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte N strand of a reservoir, ca. 2.25 mi (air) SE of Honcut ca. 13 mi (air) SE of Oroville 49 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  RSA518693  Phytolacca americana L. Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2.5 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 37 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
  UC1549534  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Highway. 600 Comment
  CHSC24866  Pinus contorta subsp. murrayana G. C. Gilliland 1976-4-21 20 Butte One tree growing along n wall of the parking area at the apartments at 180 E. 1st Ave., Chico. 59 Comment
  RSA5146  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville. 1600 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CHSC10728  Pinus sabiniana Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10872491  Piperia elegans Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4240 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10529964  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-8 Taylor 2374 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10497368  Plagiobothrys fulvus var. campestris Mary Susan Taylor 1978-4-14 Taylor 1568 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  SEINET12329563  Plagiobothrys glyptocarpus Unknown 1984-1 4590 Butte ca 0.5 mi N of Kunkle Reserv., along Kunkle Creek, ca 2 mi S of Paradise, E side of Pentz-Magalia Hy 600 Comment
  CHSC38276  Plagiobothrys greenei Vernon Oswald 1983-3-19 200 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. ca. 300 ft w of Parking Area M (1.2 mi e of the power lines). 146 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  RSA81730  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  RSA178642  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte East of Chico near the Hooker Oak, Comment
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC29050  Plagiobothrys humistratus R. A. Schlising 1980-4-20 3568 Butte Between Singer Creek and Cana-Pine Creek Road. In trail. Comment
  CHSC29051  Plagiobothrys leptocladus R. A. Schlising 1980-4-14 3561 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; at dried margins of pools that contained standing water in winter. Comment
  SEINET10497552  Plagiobothrys nothofulvus Mary Susan Taylor 1973-1 Taylor 37 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC39029  Plagiobothrys scriptus Lowell Ahart 1983-4-10 3918 Butte Central part of county, north-east of highway 99 and Pentz Road about 1 mile. 65 Comment
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC103731  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
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  JEPS114983  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte about 350 yds SW of the cemetery, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  SEINET10497616  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 A Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA63834  Plagiobothrys tenellus A. A. Heller, H. E. Brown 1902-5-9 5509 Butte Berry Canyon (near Clear Creek) from type region Comment
  CHSC30805  Plantago bigelovii M. S. Taylor 1980-3-1 2333 Butte Ca. 10 ft s of Neal Rd,, ca. 1/4 mi e of the city dump, ca. 1 1/4 mi e of Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC36306  Plantago coronopus M. S. Taylor 1982-4-28 4346 Butte Graylodge Waterfowl Refuge roadsides, n side of Rutherford Rd, just w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC42706  Plantago coronopus Lowell Ahart 1987-6-9 5745 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
  CHSC118550  Plantago elongata Lowell Ahart 2017-2-27 21384 Butte Along a poor road, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  RSA669476  Plantago elongata subsp. pentasperma R. R. Halse 2001-3-28 5976 Butte Along State Hwy 99, 2.3 miles south of its junction with State Hwy 149, near Gold Creek. 40 Comment
  CHSC47466  Plantago erecta Lowell Ahart 1978-5-1 1696 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET8219637  Plantago erecta C. E. Wickstrom 1964-3-3 7 Butte N. rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Chico. Comment
  POM146159  Plantago lanceolata E. E. Stanford 1927-5-21 386 Butte 4 miles SE of Avery 1220 Comment
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  SEINET12030016  Platanus racemosa M. S. Taylor, Oswald, V. 1984-1 5376 Butte along Humbug Rd, ca 0.5 mi E of Honey Run Covered Bridge, ca 6 air mi E of Chico 183 Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC76953  Platystemon californicus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  SD60213  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  CHSC19939  Plectritis ciliosa M. S. Taylor 1975-3-10 415 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  SEINET12328347  Plectritis ciliosa Unknown 1984-1 4538 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut on Peter Ahart Ranch 50 Comment
  SEINET7073603  Plectritis ciliosa subsp. insignis 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
  CHSC29232  Plectritis congesta M. S. Taylor 1980-4-1 2428 Butte On bluffs above Covered Bridge, ca. 100 ft s of Butte Creek, ca. 6 mi e of Chico 182 Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  JEPS124177  Plectritis macrocera Lowell Ahart 2015-3-14 19950 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC30086  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft w of Old Humboldt Rd. 2011 Comment
  CHSC100964  Poa annua Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC255685  Poa bolanderi H. F. Copeland 1920-7-24 19 Butte By Colby Creek 1828 Comment
  OBI22115  Poa bolanderi H. F. Copeland 1932-8-19 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest 1700 Comment
  CHSC6681  Poa bulbosa Marilyn Lee 1968-3-8 113 Butte 1271 E. 1st Ave. in almond orchard, Chico. Comment
  CHSC8602  Poa bulbosa M. Banning 1969-4-9 47 Butte 9 mi. E. Chico on Hwy. 32. 259 Comment
  UC1594562  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-BC255787  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico Comment
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  CHSC38847  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-11 469 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek between the e end of the Golf Course and Alligator Hole. 91 Comment
  CAS-BOT-BC236374  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True 1967-5-9 42233 Butte SE side of N Fork of Feather River at Pulga Bridge Comment
  SEINET10508318  Poa tenerrima Lowell Ahart 1983-4-10 Ahart 3930 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
  SEINET10493887  Polygala cornuta Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4095 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  SEINET11263758  Polygala cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi se of Paradise on Pentz Road.; 0 427 Comment
  CAS-BOT-BC167556  Polygala cornuta var. cornuta Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  SEINET3450754  Polygonum amphibium var. emersum Unknown 2003-6-16 10287 Butte Richvale, Richvale, about 1.5 air miles southwest, dry ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road 20 Comment
  JEPS122293  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UC1562374  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte sw Forbestown Generator (on s side of reservoir); Forbestown Reservoir 487 Comment
  CHSC104807  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 120 Comment
  CHSC28768  Polygonum bidwelliae J. D. Jokerst 1978-5-21 125 Butte Ca. 200 mets. N. W. of Hwy 32, 7.7 mi. N. of Chico, top of ridge. 365 Comment
  CHSC42262  Polygonum bidwelliae Barbara Castro 1987-5-2 60 Butte Upper Bidwell Park, Chico, ca. 0.5 mi e of Rifle Range beside foot trail. 109 Comment
  CHSC59121  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. Bottom of slope on west side of dry creek. 68 Comment
  SEINET11934608  Polygonum bidwelliae Unknown 1988-1 29 Butte Salmon Hole, ca.5 mi E of Chico Municipal Golf Course 122 Comment
  POM196100  Polygonum bistortoides E. B. Copeland 1929-7-20 s.n. Butte Jonesville. 1550 Comment
  CHSC78889  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte About 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  CHSC38615  Polygonum californicum Vernon Oswald 1982-11-6 9 Butte Bidwell Park, Chico. 100 ft n of Upper Park Rd. 3.3 mi e of its junction with Wildwood Ave. Growing in gravel of abandoned roadbed in foothill woodland. 158 Comment
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CAS-BOT-BC414370  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  SEINET10479630  Polygonum californicum Mary Susan Taylor 1975-9-19 Taylor 919 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  CHSC11916  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville. Dry openings in Colby Canyon. 1550 Comment
  CAS-BOT-BC414716  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  UC478527  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Butte Creek Jonesville 1500 Comment
  SEINET10479663  Polygonum parryi Lowell Ahart 1985-6-17 Ahart 5060 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  SEINET10479687  Polygonum spergulariiforme Mary Susan Taylor 1977-8-17 Taylor 1460 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC31236  Polypodium calirhiza M. S. Taylor 1979-3-20 1950 Butte Along old road on n side of Hwy 70 following Feather River which begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  JEPS115061  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  RSA795637  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  SEINET10530418  Polypodium glycyrrhiza Mary Susan Taylor 1976-3-6 Taylor 1014 A 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
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  SEINET10658300  Polypogon maritimus A. Arthur Heller 1914-5-13 Heller s.n. Butte Between Durham and Nelson Comment
  CHSC35658  Polypogon monspeliensis R. E. Preston 1982-4-22 246 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  JEPS118208  Polypogon viridis Dean W. Taylor 2004-6-17 19105 Butte Flea Valley (3 air miles NW of Pulga; watershed Flea Valley Creek, tributary North Fork Feather River) 1127 Comment
  CHSC34675  Polystichum imbricans L. Ahart; M. S. Taylor 1981-11-8 3231 A Butte Along the rd to Golden Trout Crossing, ca. 7 mi w of Sly Creek Dam. 800 Comment
  CHSC4147  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 Comment
  CHSC77411  Polystichum imbricans subsp. imbricans Laura Bogni 1997-4-5 32 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 640 Comment
  JEPS124285  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte About 3 miles (air) north of De Sabla Reservoir. 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
  CHSC28380  Polystichum kruckebergii Robert A. Schlising; Marc P. Hayes 1978-6-24 3292 Butte Extreme NW Butte County, just below summit of Humboldt Peak above Jonesville. 2133 Comment
  CHSC44608  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3189 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CHSC31767  Populus fremontii L. Ahart 1978-3-21 1617 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC65689  Populus fremontii subsp. fremontii Vernon H. Oswald 1996-3-22 7250 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, S edge of Tract 2. 33 Comment
  SEINET10460842  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Submerged or reaching surface of water in lily pond near Butte Creek House 1750 Comment
  RSA500429  Potamogeton diversifolius Vernon H. Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the west side of the north end of Cana-Pine Creek Road. 55 Comment
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CHSC49686  Potamogeton gramineus Vernon Oswald 1987-6-9 2974 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC453738  Potamogeton natans Lowell Ahart 1981-9-21 3198 Butte Along French Creek 1300 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  UC1562389  Potentilla drummondii subsp. bruceae Vernon Oswald 1990-7-3 4342 Butte ca 0.75 mi s Humbug Summit (ca 4.75 mi e of Jonesville, headwaters of the East Branch Willow Creek); e branch Willow Creek, s of Humbug Summit, e of Jonesville 1950 Comment
  SEINET3077020 Image available Potentilla flabellifolia Marc Mittleman 1980-8-1 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  UCD113869  Potentilla gracilis A. A. Heller 1917-7-26 12836 Butte Butte Meadows. 1280 Comment
  CHSC26856  Potentilla gracilis var. fastigiata M. S. Taylor; M. Hayes 1978-6-24 1666 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  UC1564787  Potentilla millefolia V. Oswald and L. Ahart 1989-6-27 3826 Butte ca. 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); along Butte Creek 1767 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  UCSC000640  Prunella vulgaris subsp. lanceolata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  POM181780  Prunella vulgaris var. lanceolata H. F. Copeland 1927-9-4 464 Butte Jonesville. Comment
  CHSC27213  Prunus caroliniana P. Moyer 1972-4-9 162 Butte CSUC Campus. Off path to camillia stand, n side of Chico Creek. 60 Comment
  CHSC110112  Prunus cerasifera L. P. Janeway 2012-5-2 10818 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. Next to the road. 62 Comment
  CAS-BOT-BC159924  Prunus emarginata Brandegee 1892-9-29 s.n. Butte Jonesville Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC48868  Prunus mahaleb Vernon Oswald 1987-3-30 2301 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 68 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC361743  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1983-6-6 4030 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC26783  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1978-5-7 1614 Butte Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC27794  Psilocarphus brevissimus var. brevissimus K. Bridwell 1978-4-18 97 Butte Ditch along roadside of Broyles Rd, ca. 0.25 mi w of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico. 76 Comment
  CHSC108995  Psilocarphus oregonus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 401 Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC361917  Psilocarphus tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows 1600 Comment
  CHSC82429  Psilocarphus tenellus var. globiferus Lowell Ahart 2002-5-7 9612 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC46282  Psilocarphus tenellus var. tenellus Vernon Oswald 1989-5-16 3772 Butte Ponderosa way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  CHSC46336  Psilocarphus tenellus var. tenellus Lowell Ahart 1989-5-23 6245 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CAS-BOT-BC148608  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 Comment
  CHSC57334  Pteridium aquilinum var. pubescens Robert C. Hill 1990-4-10 7 Butte Large population at junction of Enterprise Bridge and south Fork Feather River, 13 mi e of Oroville. 426 Comment
  UC474261  Pterospora andromedea H. F. Copeland 1930-7-21 Butte Butte Creek Jonesville Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  CHSC115351  Pyracantha koidzumii Lowell Ahart 2015-1-27 19922 Butte East side of an irrigation ditch, in a pasture field, about 30 yards north of East Gridley Road, about 1/4 mile east of Highway 99E, east of Gridley. 29 Comment
  CAS-BOT-BC462849  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  CAS-BOT-BC462606  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1700 Comment
  CDA13272  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-9 13120 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  UC474250  Pyrola picta H. F. Copeland 1930-7-21 Butte Jonesville, below cabin Jonesville 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
  JEPS115841  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 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
  CHSC3597  Quercus chrysolepis Gerry Carrauthers 1966-3-6 40 Butte Ca. 3 mi N. of city of Paradise near observation point for gold nugget find. Comment
  SEINET10477144  Quercus chrysolepis Mary Susan Taylor 1980-5-27 Taylor 2659 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  SACT002656  Quercus dumosa Herbert Copeland 1939-7-8 Butte Humboldt Road 12 miles east of Chico. Shrub 2m tall tall very abundant as component of chaparral. Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CDA13879  Quercus garryana var. semota G. F. Hrusa, T. D. Wilfred 1997-5-7 13738 Butte Sierra Nevada; Slopes facing Little Butte Creek above Magalia Reservioir, N of Magalia. Comment
  JEPS37799  Quercus kelloggii W. L. Jepson 1936-8-7 17857 Butte Butte Creek (upper) Bear Buttes Comment
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Apr 5 2012
  RSA754366  Quercus kelloggii L. Ahart 2009-6-3 15812 Butte 150 yards SW of Ten Mile House Road, Upper Bidwell park, about 1/2 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  JEPS115104  Quercus lobata Lowell Ahart, John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC1135714  Quercus lobata C. G. Albertus 1933-6-14 28 Butte 0.5 mi w 14 Mile House; Chiso Quad. 335 Comment
  CHSC100469  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15453 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC104486  Quercus vacciniifolia A. A. Heller 1915-6-10 11957 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  UC5705  Quercus wislizeni W. H. Brewer 1862-10-17 1472 Butte Table Mountain, Oroville Comment
  UC57375  Quercus wislizeni H. E. Brown 1896-10-9 109 Butte near Clear Creek 53 Comment
  CDA19813  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 Comment
  SEINET12087494  Ranunculus canus A. A. Heller, Brown, H. E. 1902-1 s.n. Butte near Nelson Comment
  CHSC50056  Ranunculus hebecarpus Lowell Ahart 1990-3-19 6421 Butte At the base of banks along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC46068  Ranunculus muricatus Kirsten Tarp 1983-5-31 286 Butte Nelson, in lawn in front of the Nelson Post Office. 36 Comment
  JEPS115242  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10965667  Ranunculus muricatus Mary Susan Taylor 1976-3-30 Taylor 1041 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  CHSC3802  Ranunculus occidentalis R. L. Adams 1964-4-12 64 Butte Found: Bidwell Park at junction of River Road and Sacramento Ave., near ox-bow lake bend, approx. 50 yds. from junction of roads, due west. Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  CHSC3554  Ranunculus occidentalis var. occidentalis Gary Dutton 1966-2-28 103 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. CSC. Comment
  CHSC46847  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 254 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC79557  Ranunculus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1997-5-1 13718 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  CHSC38048  Raphanus raphanistrum R. E. Preston 1983-1-9 378 Butte On levee of irrigation ditch, w side of Aguas Frias Rd ca. 0.9 mi n of Richvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CAS-BOT-BC59570  Rhamnus John Thomas Howell 1975-6-15 51118 Butte Sierra Nevada - Paradise - Skyway near Billie Road 609 Comment
  CAS-BOT-BC59878  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1968-5-13 44334 Butte Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau. 1463 Comment
  CAS-BOT-BC59925  Rhamnus ilicifolia Lowell Ahart 1980-5-17 2299 Butte 1/2 mi. se. of Hurleton. 600 Comment
  CHSC1528  Rhamnus ilicifolia E. Walker 1932-5-12 Butte Feather River Canyon. Comment
  SEINET10493675  Rhamnus ilicifolia Mary Susan Taylor 1979-10-13 Taylor 2259 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC5979  Rhaphiolepis indica M. MacArthur 1968-6-12 140 Butte Just outside NW side of Biology Stockroom in LS bldl, along paved path, Chico State College campus. 60 Comment
  CHSC21041  Rhus aromatica M. S. Taylor 1975-6-30 820 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 ft n of Greenwood Store, Cohasset. 853 Comment
  JEPS120039  Rhus aromatica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18017 Butte On the north side of Big Chico Creek, south of the path, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC97536  Rhynchospora californica Vernon Oswald 1985-7-10 1895 Butte Upper Bidwell Park, Chico, ca. 200 ft south of Upper Park Rd. ca. 0.2 miles ne of Salmon Hole. 182 Comment
  CHSC31431  Rhynchospora capitellata L. Ahart 1980-9-10 2618 Butte Seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  RSA718795  Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 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
  UC217234  Ribes H. M. Hall 1917-5-11 10294 Butte Keefer Mill Keefer Ridge 731 Comment
  UC600615  Ribes inerme var. inerme H. F. Copeland 1930-7-25 Butte Jonesville, meadow below cabin Jonesville Comment
  SEINET10482944  Ribes nevadaense Mary Susan Taylor 1981-4-14 Taylor 3532 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CDA13286  Ribes roezlii G. F. Hrusa, T. D. Wilfred 1996-7-9 13134 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UC1127544  Ribes roezlii J. E. Sowder 1933-7-5 104 Butte 2 mi se Promontory Point; Chico Quadrangle Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198953  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198965  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS103453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 Butte On the 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
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
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Feb 25 2009
  CHSC50339  Rosa bridgesii Vernon Oswald 1990-5-14 4215 Butte Dirt road to the marsh on the west branch of Brush Creek, 0.3 mile east of Bald Rock Rd, ca. 0.75 mile south of the town of Brush Creek. 1033 Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 Comment
  CHSC28475  Rotala ramosior R. A. Schlising 1979-10-14 3508 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC78521  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  UC1191573  Rotala ramosior Herbert L. Mason, Verne Grant 1946-9-4 13110 Butte 833 Canal, West Gridley Road West Gridley Road; 833 Canal, West Gridley Road Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CAS-BOT-BC156611  Rubus bifrons M. S. Taylor 1982-5-22 4506 A Butte Graylodge Waterfowl Refuse, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CAS-BOT-BC148350  Rubus laciniatus Lowell Ahart 1982-9-29 3834 Butte along the edge of the road and near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley. 1100 Comment
  CHSC34216  Rubus ursinus M. S. Taylor 1981-4-28 3570 Butte Along Chino Creek, at its jct with 23N28.2, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico. 232 Comment
  CHSC111139  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 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-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  RSA781353  Rumex pulcher Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 153 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. Comment
  JEPS114955  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET5337060  Sagina decumbens subsp. occidentalis B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3295 Butte Peter Ahart Ranch ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  UC1602295  Sagina saginoides unknown 1892-6-29 Butte Jonesville Comment
  CAS-BOT-BC103451  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  CAS-BOT-BC107832  Salix gooddingii Gordon H. True 1971-4-8 6455 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CDA38813  Salix gooddingii L. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS115376  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 257 Comment
  CAS-BOT-BC104082  Salix hindsiana C. R. Ball 1915-6-4 1945 Butte old river channel near Biggs Comment
  CHSC37779  Salix laevigata M. S. Taylor; K. Tharp 1982-4-8 4295 Butte Turnout near Bridal Path sign, across Feather River from spillway, along Oroville Dam Blvd, ca. 2.5 mi w of Oroville Dam Visitor Center. 121 Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  LA208680  Salix laevigata A. A. Heller; 1914-3-21 11222 Butte 8 mi N of Oroville Comment
  UC456789  Salix laevigata E. B. Copeland 1931-5-8 Butte 5-mile dam Chico Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  UC1609154  Salix lasiandra subsp. lasiandra Vernon H. Oswald and Lowell Ahart 1993-6-22 5561 Butte gravel pit in Long Ravine w. of Stirling City (where Hendricks Canal tunnel dumps into creek) 975 Comment
  CAS-BOT-BC125181  Salix lasiandra var. lasiandra Lowell Ahart 1982-5-8 3408 A Butte Near Forbestown Reservoir 800 Comment
  CHSC108840  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte Wet are in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC108858  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte Around the edges of the pond east of the table, at the old homestead, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  CHSC40542  Salix lasiolepis J. D. Jokerst; L. Ahart 1984-3-20 1947 Butte Along the edge of Black Bart Rd. 0.5 miles S of its junction with Forbestown Rd. Comment
  JEPS119584  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  NY187652  Salix lasiolepis L. Ahart 1987-4-30 5492 Butte Along North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles SE of Oroville 67.1 Comment
  RSA4400  Salix lemmonii E. B. Copeland 1931-6-11 620 -a Butte Jonesville. Kirby's Meadow. 1750 Comment
  CAS-BOT-BC129003  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  POM67636  Sambucus caerulea C. C. Bruce 1897-05 1821 Butte Little Chico Comment
  CHSC31408  Sambucus mexicana Debra Dockrey 1980-4-21 4 Butte Ca. 8 mi N of Chico. 365 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
  CHSC77423  Sambucus mexicana Tim Stofer 1997-4-20 19 Butte This plant was located on the east side of the trail 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC238621  Sambucus nigra subsp. caerulea A. A. Heller; H. E. Brown 1902-5-14 5550 Butte Berry Canyon (Near Clear Creek) Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  CHSC85626  Sanicula bipinnatifida var. flava Frances Kimball 1965-5-2 2667 Butte Cherokee Rd., 9.9 mi. E of California Rt. 70, between Oroville and Quincy; top of Table Mt.; gully, left bank. Comment
  CHSC32624  Sanicula tuberosa M. S. Taylor 1981-3-31 3463 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  JEPS98668  Sanicula tuberosa O. Gomez and P. Vargas 1996-5-27 41 PV96 Butte Feather Falls, ca. 0.5 mi from the parking lot by the trail to the Falls Comment
  UC1605153  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte N of Oroville (S wall of Flag Canyon near top of an old track from bottom of canyon onto NW edge of North Table Mountain) 341 Comment
  CHSC11800  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1713670  Saxifraga aprica E. B. Copeland 1930-7-12 Butte above Butte Creek House (Jonesville); Jonesville 1700 Comment
  JEPS117892  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road 123 Comment
  CHSC28610  Schoenoplectus acutus var. occidentalis M. S. Taylor 1977-9-12 1539 Butte End of Upper Bidwell Park Rd, Upper Bidwell Park, Chico. 243 Comment
  CHSC31691  Schoenoplectus mucronatus L. Ahart 1972-7-5 133 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC793848  Schoenoplectus mucronatus Margaret Bellue 1947-8-28 Butte Afton Road nw Biggs (rice field); nw of Biggs Comment
  SEINET10467323  Scirpus carinatus Mary Susan Taylor 1981-5-6 Taylor 3622 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC56808  Scirpus diffusus L. P. Janeway 1987-6-8 2177 Butte 8.3 mi south of Bald Mountain via dirt road. 777 Comment
  CAS-BOT-BC110891  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte About 2 1/2 miles north-east of Forbestown, near road to Forbestown Res. 868 Comment
  CHSC71173  Scleranthus annuus subsp. annuus Lowell Ahart 1998-6-9 7981 Butte On the west side of Cherokee Road, about 50 feet south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  CHSC31740  Scribneria bolanderi L. Ahart 1978-4-27 1664 Butte Pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS98455  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte 3 1/2 air miles SW of Forbestown (the small meadow S of int of Black Bart Road and Forbestown Road) 731 Comment
  SEINET10508333  Scribneria bolanderi Mary Susan Taylor 1984-4-6 Taylor 5402 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  CHSC4640  Scutellaria tuberosa R. Carter 1966-4-28 376 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. up 23N28 on W side of road. 640 Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  CAS-BOT-BC415014  Sedella pumila John Thomas Howell 1976-4-1 51535 Butte Table Mountain, 4 to 5 miles N of Oroville 304 Comment
  SBBG17329  Sedella pumila M. Vincent 1962-4-15 192 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  CAS-BOT-BC416978  Sedella pumila W. J. Follett; E. B. Follett 1963-5-19 s.n. Butte 3.8 mi. W of Paradise on road to Chico Comment
  CHSC42124  Sedum spathulifolium Lowell Ahart 1980-5-29 2358 Butte South of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC94240  Sedum spathulifolium Lowell Ahart 2006-5-10 12627 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  RSA0081477  Sedum spathulifolium J. R. Shevock 1972-5-19 1784 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  SEINET10530433  Selaginella hansenii Mary Susan Taylor 1979-11-11 Taylor 2289 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC26844  Senecio aronicoides M. S. Taylor 1978-6-24 1636 Butte On n side of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1371 Comment
  POM193091  Senecio cymbalarioides E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  SBBG32387  Senecio eurycephalus L. S. Rose 1967-6-11 Butte 3 mi S of Pulga, Feather River Cyn Comment
  SFV11410  Senecio hydrophiloides M. L. Vincent 1965-4-17 638 Butte 6 miles north of New Feather River bridge (west fork). Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  JEPS118584  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Brush Creek 7.5' quad. Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CHSC25447  Senecio triangularis Hayes; Warner 1977-9-11 76 Butte Ca. 150 m n of the road between Jonesville and Butte Meadows (Humboldt Rd.), exactly 8.4 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC42455  Senecio vulgaris Lowell Ahart 1987-5-6 5505 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
  CHSC90185  Senecio vulgaris Robert Kissane 1989-4-18 8 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 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
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CHSC73741  Sericocarpus oregonensis B. Castro; L. Hanson 1996-8-22 717 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge, near overlook to Seven Falls on short S-trending ridge. 944 Comment
  CAS-BOT-BC263235  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  CHSC112631  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards southeast of the restroom, near 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
  CHSC47640  Setaria pumila Lowell Ahart 1975-6-23 801 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC61012  Sherardia arvensis Lowell Ahart 1993-6-20 6986 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. Comment
  CHSC29406  Sidalcea asprella R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3759 Butte E of Lake Oroville, 3.4 mi N and W of Forbestown along Forbestown Road. 892 Comment
  JEPS94770  Sidalcea calycosa subsp. calycosa Lowell Ahart 1998-6-3 7964 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC26820  Sidalcea diploscypha M. S. Taylor 1978-5-7 1617 Butte Scattered around Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  CHSC34952  Sidalcea gigantea R. A. Schlising; C. A. Lawler 1981-8-8 4190 Butte Near N end of Concow Reservoir. Comment
  POM253293  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte Upper end of Sang Lake, east of Chaparral, east of a meadow 1524 Comment
  UC204918  Sidalcea glaucescens A. A. Heller 1914-8-7 11656 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  UC600531  Sidalcea glaucescens E. B. Copeland 1929-7-22 Butte Jonesville 1550 Comment
  SFV2295  Sidalcea hartwegii B. Fuller 1962-5-8 s. n. Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  UC725445  Sidalcea hartwegii A. A. Heller 1940-5-5 15573 Butte above the 10 Mile House site (between Big and Little Chico Creeks); between Big and Little Chico Creeks Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  UCD14326  Sidalcea hartwegii Bif Sopez 1983-5-15 7 Butte Butte Co., 200 ft. north of Welch-Polermo Road on Highway 70; 91 Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  UC726313  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  CAS-BOT-BC205759  Sidalcea oregana Sally Bianco 1995-10-19 1044 Butte E side of Concow Rd. approx. 0.8 km S of Hoffman Rd. on south side of creek 760 Comment
  CHSC34949  Sidalcea oregana subsp. spicata R. A. Schlising; K. Tarp, R. Banchero 1981-8-4 4181 Butte Narrow meadow along Willow Creek near crossing of Humbug Road. 1844 Comment
  RSA4491  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 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
  CHSC48263  Silene antirrhina Vernon Oswald 1987-5-21 2916 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  SD8103  Silene californica Daniel Cleveland 1882-7-14 Butte Sutton house. Comment
  CAS-BOT-BC385883  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  RSA4443  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville; near the Summit. 2100 Comment
  CAS-BOT-BC389287  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte About Chico Meadows 1219 Comment
  SEINET10574544 Image available Silene occidentalis subsp. longistipitata Edwin B. Copel 1930-7-28 Copeland 635 Butte Jonesville, Butte County. Scattered in chaparral. 1550 Comment
  CAS-BOT-BC74928  Sinapis arvensis Lowell Ahart 1974-5-1 s.n. Butte About one mile east of Bangor. 500 Comment
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 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
  UC725582  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 1524 Comment
  CHSC29410  Sisyrinchium elmeri R. A. Schlising; R. Banchero 1980-6-6 3653 Butte N of Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush. Marsh ca 0.5 off road. Comment
  JEPS88523  Smilacina racemosa Lowell Ahart 1996-6-5 7683 Butte about 1/10 mi n of the bridge across the South Fork of the Feather River (about 1 mi n of Golden Trout Crossing, about 7 air mi e of Feather Falls, on the east side of river) 914 Comment
  CHSC1934  Solanum americanum V. Holt 1931-6-1 Butte Along Chico Creek near campus. 57 Comment
  JEPS110130  Solanum americanum Lowell Ahart 2006-9-28 13377 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS95803  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte about 2 miles north and 1/4 mile east of Honcut; Peter Ahart Ranch, Oroville; Peter Ahart Ranch; about 2 miles north and 1/4 mile east of Honcut; about 12 miles south of Oroville 30 Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  SEINET7274373 Image available Solanum parishii S. Jones 29 Butte ca. 0.25 mi E of jct of Stilson Canyn Rd. and Bruce Rd.; Butte County Comment
  JEPS108860  Solanum umbelliferum Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CAS-BOT-BC157054  Solanum umbelliferum Mrs. C. C. Bruce 1892-5-1 1872 Butte Unspecified. Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  SEINET10829502  Solanum umbelliferum Lowell Ahart 1987-5-9 Ahart 5599 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River about 3 miles SW of Pulga. 366 Comment
  CAS-BOT-BC365378  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CAS-BOT-BC365384  Solidago elongata Lowell Ahart 1986-8-15 5385 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 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
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC38390  Sonchus oleraceus 1983-5-1 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  CHSC37529  Sonchus tenerrimus M. S. Taylor; L. Ahart 1982-10-11 5050 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC236539  Sorghum halepense John Thomas Howell 1975-6-15 51065 Butte Waste ground, Chico 60 Comment
  UC1099803  Sparganium eurycarpum var. eurycarpum Herbert L. Mason and Verne Grant 1946-8-14 13016 Butte Butte Sink; Sacramento Outing Club Comment
  SEINET10452463  Spartium junceum Mary Susan Taylor 1975-4-26 Taylor 524 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC105817  Sphenosciadium capitellatum Lowell Ahart 2010-9-28 17244 Butte Along the edges of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  SEINET3163884  Spraguea umbellata K. Conger 1907-1 sn Butte Brush Creek Comment
  CHSC42981  Stachys ajugoides var. rigida L. P. Janeway 1987-6-27 2352 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of road. 1554 Comment
  CHSC87566  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  CHSC100120  Stachys pycnantha L. P. Janeway 2008-8-10 9535 Butte Northern High Sierra Nevada. Along Four Trees road 3.2 road km east-southeast of Hwy 70; overlooking Mill Creek, a tributary to North Fork Feather River; 1.6 air km east-southeast of Pulga. 732 Comment
  UC2055631  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  UC884287 Image available Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 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-BC175314  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  CHSC50828  Stellaria calycantha Vernon Oswald; Lowell Ahart 1990-7-19 4369 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1981 Comment
  UC1609333  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte about 6 air mi ne Feather Falls (in the campground on the w side of the bridge across Fall River) 1036 Comment
  CHSC3291  Stellaria media M. L. Hillier 1966-2-14 Butte On hillside n. of Bidwell Municipal Golf Course club house. Comment
  CHSC114950  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 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
  CHSC35037  Stellaria obtusa R. Schlising; R. Banchero 1980-8-1 3952 Butte On Forest Service road N of Philbrook Lake in N part of county. At margin of small stream. Comment
  CHSC48280  Stellaria obtusa Vernon Oswald 1987-6-9 2975 Butte Ca. 3 mi ne of Jonesville on the road paralleling Scotts John Creek, 2 mi n of the road connecting Humboldt and Humbug roads. Near the creek. 1828 Comment
  CHSC48281  Stellaria obtusa Vernon Oswald 1987-7-29 3160 Butte Near Coon Hollow Rd. at the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. On the edge of a small backwater of the river. 1621 Comment
  UC1594701  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  CHSC113602  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC62435  Stephanomeria paniculata L. P. Janeway 1993-9-22 4597 Butte Plumas National Forest. Canyon of North Fork Feather River; along dirt road to Bear Ranch Creek falls from Hwy 70. 487 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10827380  Stipa lemmonii Robert A. Schlising 1978-4-23 Schlising 03229 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road; area of Cupressus macnabiana and Pinus sabiniana; with Festuca california and Elymus glaucus. Comment
  CHSC112780  Stipa lemmonii var. lemmonii Lowell Ahart 2013-5-27 18714 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 1/4 miles (air) southwest of Forbestown. 731 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  SEINET10508401  Stipa pulchra Lowell Ahart 1983-6-15 Ahart 4055 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET8081026  Stipa pulchra D. H. Heinze 1963-4-7 s.n. Butte Cohasset. 122 Comment
  SEINET10508405  Stipa stillmanii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4178 Butte T25N R4E sw 1/4 sw 1/4 sec. 33. Paradise NE quad. Both sides of the Skyway 1.8 mi S of Inskip. Yellow Pine Forest. 4100 ft. 1250 Comment
  CHSC38025  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  UCD164224  Streptanthus drepanoides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 301 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 303 Comment
  RSA0085003  Streptanthus longisiliquus L. Ahart 2006-7-11 12939 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC86434  Streptanthus polygaloides Jenny Marr 1994-6-13 89 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  JEPS98473  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC36695  Streptanthus tortuosus R. E. Preston 1982-5-19 287 Butte On n side of McCabe's Cr, 100 ft e of Lumpkin Rd, ca. 12 mi e of Oroville. 451 Comment
  CHSC25540  Streptanthus tortuosus var. suffrutescens Robert A. Schlising 1974-4-29 3123 Butte Lava outcrops of Table Mountain several miles north of Oroville, off Cherokee Road. 365 Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC39670  Swertia albicaulis var. nitida Lowell Ahart 1983-6-21 4085 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  CHSC28387  Symphyotrichum bracteolatum James D. Jokerst 1979-10-13 380 Butte Along edges of Concow Cr. Intersection of Concow Cr. and Jordan Hill Rd., 0.8 mi W of Concow Rd. Comment
  CHSC109753  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC37076  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Ca 100 m N of check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CHSC38727  Tamarix gallica Vernon Oswald 1983-4-24 361 Butte Upper bidwell Park, Chico, on the north edge of Chico Creek 100 ft E of Parking Area H at Day Camp. 91 Comment
  CHSC82625  Tamarix parviflora Tara Morgan 2002-4-1 20 Butte On the west side of the Sacramento River south of Hamilton City. All along Stoney Creek at this location. 52 Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC32736  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Between Ponderosa Way (Rim Rd) and Concow Rd, ca. 1/10 mi s of their jct; ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 2 mi n of Lake Concow. 975 Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CHSC44631  Taxus brevifolia Vernon Oswald 1986-8-7 2275 Butte East side of Paradise Lake, ca. 0.25 mi n of the picnic area. 780 Comment
  CHSC83  Taxus brevifolia McCarthy; Kasak 1931-6-5 Butte Halfway House between Magalia and Camp l. 762 Comment
  CHSC25350  Tellima grandiflora Mark P. Hayes 1977-4-22 14 Butte Ca. .5 km sw of Heinz Crk., along small creek, ca. 200 m from its confluence and North Fork of Feather River. 450 Comment
  SEINET10483066  Tellima grandiflora Mary Susan Taylor 1975-4-29 Taylor 545 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC44305  Tetrapteron graciliflorum Lowell Ahart 1988-3-25 5930 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, aout 12 miles south-east of Oroville. 76 Comment
  CHSC45802  Thalictrum fendleri Kirsten Tarp 1983-7-28 311 Butte N part of county at Chico Meadows. 1295 Comment
  CHSC52196  Thalictrum fendleri var. polycarpum L. P. Janeway 1989-5-11 3232 Butte Along Deadwood Cr at jct of Concow and Jordan Hill Roads. 518 Comment
  UCD116023  Thysanocarpus curvipes M. Vincent 1961-3-28 13 Butte Skyway between Chico and Paradise, overlooking 'Little Grand Canyon. 609 Comment
  RSA0039384  Thysanocarpus curvipes var. curvipes E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  CHSC35008  Thysanocarpus curvipes var. elegans R. E. Preston 1982-2-25 180 Butte Ravine of Chico Creek at former diversion dam, Upper Bidwell Park; ca. 5.5 mi ene of downtown Chico. 91 Comment
  CHSC4139  Thysanocarpus radians R. Carter 1966-4-9