Search Results — 2000 specimen records retrieved (1590 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  CAS-BOT-BC330626  Acer glabrum var. glabrum A. A. Heller 1928-7-25 14698 Butte Along the forest service trail between Jonesville and Butte Creek House. Comment
  CAS-BOT-BC331606  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CHSC81448  Acer macrophyllum Sabrina Wright 2000-4-18 Butte North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Approximately 50 ft from edge of water. 914 Comment
  CHSC84636  Acer macrophyllum Matt Quinn 2001-4-4 15 Butte Along Honey Run Creek. From the confluence with Little Butte Creek upstream approximately 2 miles. 213 Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 Comment
  UC138075  Acer negundo var. interior Mrs. R. M. Austin May 1896 804 Butte Sacramento River Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  JEPS121910  Achillea millefolium Lowell Ahart 2014-7-16 19684 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC210636  Achnatherum lemmonii L. W. Swift 1934-5-7 103 Butte Unspecified 731 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
  CHSC105272  Achyrachaena mollis Lowell Ahart 2010-6-20 16822 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
  CHSC113810  Achyrachaena mollis M. Ocken 2011-5-2 Butte Cottonwood Rd. Collected from roadside in open country just outside fenced cattle grazing area. 57 Comment
  SEINET11842159  Achyrachaena mollis E. J. Baker 1984-1 20 Butte E. side of Hwy 99, 1 yd S of intersection with Broyles Rd, ca 12 mi N of Chico 58 Comment
  UCD103809  Acmispon americanus var. americanus A. A. Heller 1917-7-26 12826 Butte Butte Meadows. 1402 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 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
  UCD103753  Acmispon denticulatus A. A. Heller 1914-5-1 11342 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  JEPS124393  Acmispon nevadensis var. nevadensis Lowell Ahart 2015-6-16 20229 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
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS122002  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. Comment
  CHSC98961  Acmispon strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC418782  Aconogonon phytolaccifolium A. A. Heller 1914-8-8 11672 Butte At Jonesville 1524 Comment
  CAS-BOT-BC418802  Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte At Chaparral 1524 Comment
  CHSC41299  Adenocaulon bicolor S. C. Morey 1983-7-22 552 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  SEINET10529849  Adiantum capillus-veneris Mary Susan Taylor 1979-10-3 Taylor 2217 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  CHSC38778  Aegilops triuncialis Vernon Oswald 1983-6-9 662 Butte Upper Bidwell Park, Chico, 100 ft e of Parking Area A on the n side of Upper Park Rd. 85 Comment
  SEINET10494576  Aesculus californica Melvin L. Conrad 1973-6-5 Conrad 7037 Butte Jarbo pass on hwy 70. Yellow pine, calif. Buckeye & shrubby lupine. Comment
  CHSC44367  Agoseris heterophylla Lowell Ahart 1988-5-30 6025 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC87538  Agoseris retrorsa R. D. Fischer 2004-4-20 133 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail, approx. midway. 411 Comment
  RSA0036990  Agrimonia gryposepala Lowell A. Ahart 2013-7-2 18815 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  CHSC37096  Agrostis exarata L. Ahart 1982-9-13 3823 Butte By Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  SEINET4344593 Image available Agrostis gigantea Unknown 2009-7-9 16006 Butte T23N, R2E, near center, upper half of section 35. On the north side of a stream, on the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  JEPS113258  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 585 Comment
  UC1564744  Agrostis pallens V. Oswald and L. Ahart 1989-8-15 3947 Butte metavolcanic outcrop between High Lakes Rd and Carr Mine (ca 2 mi (air) e of Philbrook Reservoir) 1920 Comment
  CHSC64253  Agrostis scabra S. C. Morey 1983-8-3 693 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC138640  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC46604  Agrostis stolonifera V. Oswald; L. Ahart 1989-7-12 3845 Butte Road between Bald Mtn Lookout and Jones Meadow, ca. 2.3 mi (air) nne of the lookout. 1828 Comment
  RSA716149  Agrostis stolonifera L. Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC41910  Agrostis viridis Lowell Ahart 1983-7-29 4237 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 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
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 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
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CHSC116575  Allium amplectens B. Castro; Robin Carter 2016-3-30 2127 Butte Sacramento Valley. CA1.6 air mi E of Hwy 99, 2 mi S of Hwy 162E and 1.5 mi SSW of the Oroville Airport, off N edge of SE ortion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC45992  Allium amplectens Lowell Ahart 1978-6-2 1752 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC90049  Allium amplectens Laurie L. Gordon 1991-4-17 10 Butte 3 mi e of Hwy 99, ca. 250 ft s of Hwy 32. 54 Comment
  CHSC90579  Allium amplectens Jose Romero 1983-4-20 1 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  SEINET3884197  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.; 0 518 Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  CAS-BOT-BC465441  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Along the dirt road just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  SJSU7109  Allium cratericola D. J. Lane 1976-3-27 Butte North Table Mt c.1.5 mi NW of Oregon City on Oregon Gulch Rd c. 7-8 mi N of Oroville 396 Comment
  JEPS108586  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop 927 Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SBBG17065  Allium peninsulare M. Vincent 1962-4-15 193 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  CHSC27982  Allium platycaule M. S. Taylor 1978-7-18 1709 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC113284  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC42836  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC50066  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  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
  CHSC46605  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC23423  Alopecurus saccatus P. Fehr 1974-4-23 14 Butte Collected along side of Keefer Rd., 8 mi e of junction with Hwy 99, ca. 10 mi n of Chico. 57 Comment
  CHSC27051  Alopecurus saccatus Lowell Ahart 1978-5-2 Butte On Table Mountain, about 7 miles n of Oroville. 400 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 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
  SEINET10511201  Alopecurus saccatus A. Arthur Heller 1902-5-3 Heller 5445 Butte Near Nelson. Comment
  JEPS95991  Amaranthus albus Lowell Ahart 1999-9-21 8265 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
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  JEPS115347  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC1562411  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte about 2.5 mi ne East Gridley (along the edges of Palm Avenue, e of Larkin Road) 30 Comment
  RSA0037009  Amaranthus palmeri Lowell A. Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  CHSC37081  Amaranthus retroflexus L. Ahart; M. S. Taylor 1982-10-11 3850 Butte On dry disturbed soil of a fire guard, n of check-in station, Graylodge Wildlife Refuge, 12 mi. sw of Gridley. 35 Comment
  SEINET10478792  Amaranthus retroflexus Mary Susan Taylor 1975-10-3 Taylor 930 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC21175  Ambrosia psilostachya M. S. Taylor 1975-10-29 977 Butte Ca. 10 ft S of Humbug Rd, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  SEINET10497620  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 Ahart 4872 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  CHSC31125  Amsinckia intermedia Howard Paul 1980-4-6 3 Butte Along the s rim of Butte Creek canyon, ca. 2.5 mi e of Chico, on the Skyway. 152 Comment
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC37418  Amsinckia menziesii Nancy A. Stevens 1971-4-23 19 Butte Found ca 30 ft. s of Highway 32 and ca 2.5 mi w of Forest Ranch 701 Comment
  UC196288  Amsinckia menziesii var. menziesii A. A. Heller 1914-4-21 11309 Butte Chico Comment
  UC1586573  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte n side of, 5 mi e of hwy 70 Four Trees Road; Mill Creek 1066 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
  SEINET3918327  Andropogon virginicus Elden F. Azevedo 1952-10-8 s.n. Butte Oroville.; 0 Comment
  CHSC1961  Angelica californica R. M. Staley 1952-7-16 Butte Honey Run. 121 Comment
  JEPS115306  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
  CHSC39014  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1983-6-21 1816 Butte Top of North Table Mt at its west edge, top of escarpment edge at the morth edge of Coal Cr Canyon. 304 Comment
  CHSC44516  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1988-7-3 6122 Butte Along the nort side of the dirt road, about 1/10 miles north-west of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CHSC90470  Aphanes occidentalis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC32150  Aphyllon epigalium subsp. epigalium L. Ahart 1970-5-19 55 Butte Along Doon Grade, near Paradise. 762 Comment
  SD261367  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-1 188 Butte Found in yard at 1332 Elliott Rd., Paradise Ca. 609 Comment
  CHSC94090  Aphyllon purpureum R. Fischer 2005-3-27 679 Butte Chico. Collection from Bidwell Park along the trail leading to old pistol range, adjacent Big Chico Creek. Plants growing at base a moist, sheer, north facing cliff. 76 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC44364  Apocynum cannabinum Lowell Ahart 1988-6-29 6115 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2-1/2 miles southwest of Big Bald Rock. 762 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  SEINET10454899  Apocynum pumilum var. rhomboideum Mary Susan Taylor 1978-9-9 Taylor 1921 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC52193  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 297 Butte E part of county, near Milsap Bar. 548 Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  CAS-BOT-BC167244  Aralia californica Lowell Ahart 1985-7-9 5106 Butte Along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of the Forbestown 548 Comment
  UC1122885  Aralia californica J. E. Sowder 1933-8-4 120 Butte slope above Sable Power House; Chico Quadrangle Comment
  SEINET10449214  Arbutus unedo Mary Susan Taylor Taylor 334 Butte Campus of the California State University, Chico. 61 Comment
  UC392220  Arceuthobium campylopodum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC3261  Arceuthobium occidentale M. L. Hillier 1966-4-23 Butte About 9.5 miles e. of C.S.C. admin. building. Chico. Comment
  UCD52818  Arctostaphylos John Thomas Howell 1975-6-15 51098 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  RSA381140  Arctostaphylos manzanita J. T. Howell 1975-6-15 51111 Butte Paradise, at Skyway & Wagstaff Road. 610 Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24410  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51568 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CHSC109105  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC3616  Arctostaphylos manzanita subsp. manzanita John Francis 1966-2-15 9 Butte 4 miles E of Chico on Hwy 32. Comment
  UCD52219  Arctostaphylos manzanita subsp. roofii J. I. Mallory 1970-8-20 377 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1402 Comment
  CAS-BOT-BC24300  Arctostaphylos mewukka Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown. 457 Comment
  LA42197  Arctostaphylos mewukka C. B. Wolf; 1937-3-29 8340 Butte Sierra Nevada foothills, 3.5 mi. below Magalia on Oroville Road 487 Comment
  CAS-BOT-BC38557  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51564 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38607  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1981-5-25 4109 Butte 27 mi. n. of Chico, state hwy. #32 1066 Comment
  RSA4477  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  SD3597  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge east of the Summit. 2100 Comment
  SEINET11986401  Arctostaphylos nevadensis Unknown 1977-1 1 Butte ca 2 mi S of Butte Creek House, 40 mi N of Paradise & 15 mi NE of Butte Meadows 1768 Comment
  UC129116  Arctostaphylos patula Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA584780  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Just northeast of Pulga Bridge. 418 Comment
  CAS-BOT-BC48252  Arctostaphylos viscida subsp. viscida Carl B. Wolf 1937-3-29 8339 Butte Sierra Nevada Foothills, 3 1/2 mi. below Magalia on Oroville Road. 487 Comment
  CAS-BOT-BC48287  Arctostaphylos viscida subsp. viscida R. R. Kehlor 1951-4-14 25 Butte foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road. Comment
  CHSC41391  Arenaria kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC28805  Aristida oligantha J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 407 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  CHSC72253  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  CHSC32658  Aristolochia californica M. S. Taylor; L. Hanson 1981-3-16 3407 Butte Embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  CAS-BOT-BC295836  Arnica dealbata A. A. Heller 1928-6-28 14658 Butte On the ridge south Butte Creek, Butte Meadows Comment
  UC398950  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  SEINET10513420  Arrhenatherum elatius Lowell Ahart 1987-5-27 Ahart 5719 Butte On dry sand, rocky disturbed soil, at the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  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
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC90281  Artemisia douglasiana Lowell Ahart 1977-9-20 1237 Butte Peter Ahart Ranch, Honcut, on the banks of North Honcut Creek 50 Comment
  SEINET10474107  Artemisia douglasiana Lowell Ahart 1990-10-3 Ahart 6625 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
  SEINET10475949  Asarum hartwegii Mary Susan Taylor 1980-3-8 Taylor 2372 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  JEPS108150  Asarum lemmonii L. P. Janeway, David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump 1134 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC108319  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC44365  Asclepias speciosa Lowell Ahart 1988-6-29 6112 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  JEPS120898  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 10 yards N of the Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET10741574  Asclepias speciosa R. M. Austin 1896-1 Austin 231 Butte Colby Comment
  CHSC38872  Asparagus officinalis subsp. officinalis Vernon Oswald 1983-5-11 467 Butte Upper Bidwell Park, Chico, bordering the Golf Course s of Chico Creek and e of the footbridge. 91 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
  CAS-BOT-BC68879  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte Forbestown quad. On E side of Lumpkin-Laporte Rd, 1 mi N of Enterprise Bridge over sout fork Feather River, 457 Comment
  CAS-BOT-BC68880  Aspidotis californica M. S. Taylor; T. Devine; M. Merryman 1981-2-11 3381 Butte Big Bend Mt. Quad. ca. 100 ft. E of Lumpin Rd. on N slope above Macabes Creek, ca. 2 mi. N of jct Lumpkin Rd. 457 Comment
  CAS-BOT-BC65914  Aspidotis densa John Thomas Howell 1962-6-16 37543 Butte Magalia 731 Comment
  CHSC48130  Aster radulinus Vernon H. Oswald 1985-9-5 1940 Butte Forbestown Reservoir Rd. 2.9 mi NE of Forbestown Rd. 807 Comment
  CHSC40605  Astragalus gambelianus Ahart; Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  CHSC32762  Athysanus pusillus J. D. Jokerst 1981-4-10 1287 Butte Top of North Table Mt, W edge of mountain ca 200 met N of Cherokee Rd where it intersects the W edge of the mt. 335 Comment
  CHSC35011  Athysanus pusillus R. E. Preston 1982-3-4 184 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  CHSC43812  Athysanus pusillus Lowell Ahart 1978-4-19 1649 Butte Along the trail to Feather Falls, about 3 miles north of the town of Feather Falls. 548 Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CAS-BOT-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CAS-BOT-BC145881  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 northwest of the West Branch Bridge across Lake Oroville. 271 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  CHSC45640  Baccharis pilularis subsp. pilularis Vernon H. Oswald 1982-11-20 17 Butte Sewage Treatment Plant on Chico River Rd. ca 4.5 mi W of Chico. 41 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  CAS-BOT-BC98188  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC32582  Bacopa eisenii L. Ahart 1979-9-27 2022 Butte About 1/2 mi w of Honcut along lower Honcut Rd. 33 Comment
  UC1259003  Bacopa repens J. L. Strother 1976-8-18 1255 Butte Biggs Rice Experiment Station Comment
  CHSC46297  Bacopa rotundifolia Vernon Oswald 1989-5-30 3791 Butte Sheep Camp Ditch on the w side of the n end of Cana-Pine Creek Rd near Vandergrift Lake. 54 Comment
  UC1609148  Barbarea orthoceras Vernon H. Oswald and Lowell Ahart 1993-4-21 5294 Butte along the Skyway ca. 1 mi S of De Sabla 804 Comment
  UCD97523  Bassia hyssopifolia Lowell Ahart 1981-11-6 3222 Butte Gray Lodge, south-west of Gridley. 35 Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  CHSC31682  Bergia texana L. Ahart 1974-7-19 553 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76415  Bergia texana Lowell Ahart 1999-10-28 8308 Butte 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 9air) southwest of Chico. 32 Comment
  CDA15321  Bergia texana D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  HSC97042  Bidens frondosa L. Ahart 2006-9-11 13274 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  NY31001  Blennosperma californicum R. M. Austin s.n. Butte Mesa, near Little Chico Creek Comment
  SEINET10474478  Blennosperma nanum Mary Susan Taylor 1976-3-6 Taylor 1018 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC94272  Boechera rectissima Lowell Ahart 2006-7-16 12969 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
  CHSC32680  Boechera sparsiflora M. S. Taylor 1981-3-24 3437 Butte S side of Hwy 70, on ledges, ca. 1/4 mi w of Cresta Powerhouse, ca. 2 mi e of Pulga. 487 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  JEPS88584  Bolboschoenus maritimus subsp. paludosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8095 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River Sacramento River National Wildlife Refuge, Llano Seco Unit (NE corner of Tract 1.1, Sanctuary II) 33 Comment
  UC777276  Botrychium W. H. Wagner Jr. with F. S. Wagner and Dr. E. B. Copeland 1949-7-16 4609 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  SEINET10483071  Boykinia elata Lowell Ahart 1985-6-30 Ahart 5075 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  UCD57008  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 miles east of Oroville. 152 Comment
  CHSC34594  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC38060  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  SBBG128796  Brickellia californica L. Ahart 2012-10-20 18496 Butte soil and gravel bar on S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  SEINET10971165  Brickellia californica Mary Susan Taylor 1979-9-28 Taylor 2197 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  POM112996  Briza minor C. C. Bruce 1897-04 1886 Butte Butte Creek Comment
  SEINET10514424  Briza minor Joslin 1978-4-18 JOSLIN 15 Butte Open area, large population, ca. 11 mi N of Chico at intersection of Highway 99 with Broyles road. Grassland, sandy soil. 61 Comment
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  CAS-BOT-BC478966  Brodiaea coronaria subsp. coronaria A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  SEINET8194052  Brodiaea purdyi A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon, near Clear Creek. Comment
  SEINET10797038 Image available Brodiaea sierrae R. E. Preston 2004-6-19 Preston 2261 Butte 1.3 W of Hurleton, along Forbestown Rd. 434 Comment
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  SEINET10830989  Bromus Mary Susan Taylor 1978-7-21 Taylor 1807 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 miles N of Lake Madrone, ca. 19 miles NE of Oroville; Yellow Pine Forest. Comment
  CHSC87953  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  JEPS120812  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the E side of Black Bart Road, about 3/4 mile (by road) SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  SEINET11688468  Bromus caroli-henrici Unknown 1985-1 4939 Butte Peter Ahart Ranch, ca 1 mi N & 0.25 mi E of Honcut, ca 12 mi S of Oroville 37 Comment
  CDA31935  Bromus catharticus L. Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC101802  Bromus catharticus Lowell Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10507332  Bromus commutatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4143 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  CHSC40645  Bromus laevipes J. D. Jokerst 1984-5-19 2023 Butte Along road edges. South edge of HWY 70 ca. 0.5 miles south of its junction with Bear Ranch Creek. Comment
  UC1609056  Bromus laevipes Lowell Ahart 1993-4-16 6967 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC39490  Bromus madritensis subsp. madritensis Lowell Ahart 1983-6-21 4078 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  JEPS73967  Bromus madritensis subsp. rubens G. P. Van Eseltine 1918-4-26 895 Butte Chico Comment
  UCR143553  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville 1524 Comment
  CHSC49519  Bromus polyanthus Vernon Oswald 1988-6-2 3351 Butte Humboldt Rd. 0.7 mi ne of Lomo. Along this section of road. 1249 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CHSC49521  Bromus sterilis Vernon Oswald 1987-5-6 2375 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  CHSC50850  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1990-7-19 4366 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. 2011 Comment
  SEINET10843220  Bromus villosus A. Arthur Heller 1914-4-11 Heller 11280 Butte Hills 8 miles north of Oroville. Comment
  CHSC105533  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC98948  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  UC1564786  Calandrinia ciliata V. Oswald and L. Ahart 1989-6-27 3835 Butte Humbug Road at Butte Creek House (ca 3.3 mi (air) se of Jonesville); Butte Creek 1767 Comment
  SBBG17207  Calandrinia menziesii M. Vincent 1961-3-29 28 Butte Bidwell Park, Chico Comment
  SEINET10457150  Callitriche heterophylla Mary Susan Taylor 1975-4-26 Taylor 529 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
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC24842  Calochortus albus T. L. Reynolds 1976-4-23 58 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC44979  Calochortus albus Elizabeth L. Knight 1988-4-16 9 Butte Ca. 3.5 m n of Oroville on Table Mountain and 0.5 m s of Shirmer Ravine, 15 ft w of Cherokee Road. 152 Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  SEINET10469583  Calochortus coeruleus Mary Susan Taylor 1980-4-18 Taylor 2503 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
  CAS-BOT-BC489972  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC20263  Calochortus luteus Linda Homze 1972-4-24 6 Butte Collected at Salmon Hole in upper Bidwell Park. Comment
  CAS-BOT-BC491847  Calochortus luteus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  SEINET12046805  Calochortus luteus Unknown 1978-1 19 Butte ca 0.5 mi W of jct of Pentz Rd & Pentz Magalia Hwy, ca 1.5 mi SW of West Branch of Feather River 183 Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  CHSC2832  Calochortus monophyllus David Prall 1965-4-16 21 Butte Growing along Helltown Canyon Rd. 1 mile north from Humbug Rd. 228 Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  HSC66208  Calochortus monophyllus Laraine Roothoff 1979-5-20 11 Butte 1.05 km. W of Skyway on Bille Rd. at Bille Park, N side of rd., Paradise 518 Comment
  UCD14305  Calochortus monophyllus Maura Cullinene 1983-4-16 4 Butte from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit north-east, turn right on Richardson's Springs Road, drive for 3 miles to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17. 304 Comment
  POM196096  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  CHSC51943  Calochortus tolmiei J. Marr 1988-3-19 6 Butte 5 ft. on E side of Deadwood Rd, 1/4 mi N from Hwy 70, 20 mi N of Oroville. Comment
  CHSC79868  Calochortus tolmiei Leanna Brown; Shirley Innecken 1999-5-3 72 Butte Coutolenc Rd. 753 Comment
  CAS-BOT-BC273297  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi. nw. of Chico Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CAS-BOT-BC270004  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area S of Oregon Gulch Road, about 0.25 mile NW of the Cemetery, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  CAS-BOT-BC270008  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CHSC22939  Calycadenia oppositifolia Robert A. Schlising 1963-6-7 2616 Butte 3.1 mi S of Cohasset along Cohasset Highway. 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
  UC1119094  Calycadenia spicata C. G. Albertus 1935-6-15 29 Butte 2 mi w of Themalte; Chico 45 Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  HSC96983  Calycanthus occidentalis L. Ahart 2006-6-9 12662 Butte W side of Bardees Bar Rd., 1/8 mi. W of the bridge across the N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  JEPS119781  Calycanthus occidentalis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18006 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC725412  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  CHSC1362  Calyptridium monospermum R. M. Staley 1952-7-10 Butte Butte Meadows. 1356 Comment
  CAS-BOT-BC436384  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 11374 Butte Near Stirling 1036 Comment
  CHSC54300  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald; Lowell Ahart 1991-6-5 4654 Butte Ca. 0.5 miles west of Hwy 32 on logging road 200-G, ca 1 mile north of Platte Mtn Lookout, between Forest Ranch and Lomo. 914 Comment
  RSA718788  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range: Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  SEINET10496586  Calystegia occidentalis Mary Susan Taylor 1982-6-24 Taylor 4735 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  CHSC11112  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC33120  Calystegia polymorpha M. S. Taylor 1981-5-15 3755 Butte N side of 22N84, ca. 1 air mi sw of Hungry Hunt Peak, ca. 3 air mi s of Pulga on Feather River Hwy 70. 1005 Comment
  SEINET10472624  Camassia leichtlinii subsp. suksdorfii Mary Susan Taylor 1978-6-24 Taylor 1661 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC42509  Capsella bursa-pastoris Lowell Ahart 1987-5-6 5510 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC37882  Cardamine oligosperma Lowell Ahart 1980-3-26 2062 Butte Near Hurleton. 600 Comment
  JEPS122189  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 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
  CHSC106600  Carex L. P. Janeway 2011-4-13 10229 Butte Sacramento Valley. Oroville; Centennial Plaza on top of the levee on the south side of Feather River between the north ends of Lincoln Street and Oak Street. 57 Comment
  CHSC53753  Carex angustata L. P. Janeway 1986-9-1 1832 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC59005  Carex angustata Lowell Ahart 1992-7-21 6807 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CHSC45046  Carex aurea Vernon Oswald 1983-6-22 752 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  SEINET10927860  Carex aurea Mary Susan Taylor, Lowell Ahart 1982-8-15 Taylor 4191 Butte T25N R5E SW1/4 SE1/4 Sec 35. Joneville SW quad. S side of Coon Hollow Rd in moist spot, 1.1 mi E of its jct with Humbug Rd. 12 mile NE of Stirling City. With Perideridia howellii, Hypericum anagalloides. 1676 Comment
  CHSC31676  Carex barbarae L. Ahart 1977-5-20 1389 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43914  Carex barbarae L. P. Janeway 1986-9-20 1882 Butte West side of Comanche Cr and north side of Ord Ferry Rd. 33 Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 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
  CHSC47138  Carex barbarae L. P. Janeway; V. H. Oswald 1989-4-17 3220 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  SEINET7551511 Image available Carex barbarae Unknown 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. Oroville Dam 7.5' quad. Comment
  SEINET7551515 Image available Carex barbarae Unknown 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. Richardson Springs 7.5' quad. 93 Comment
  HSC87065  Carex barbarae L. P. Janeway, Heidi Wienert, Scott George 1988-7-27 3092 Butte Just W of Murphy Slough and Golden State Island near the Sacramento River 38 Comment
  CHSC104847  Carex bolanderi Lowell Ahart 2010-6-12 16796 Butte Along the north side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 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
  CHSC41355  Carex brainerdii R. A. Schlising 1983-6-9 4421 Butte N part of county NE of Lomo along Humboldt Road; Carpenter Ridge. 1341 Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CHSC31675  Carex densa L. Ahart 1976-4-12 1060 Butte Along a small wash in one of the pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47130  Carex densa Vernon Oswald 1983-4-6 294 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. 198 Comment
  SEINET14378485 Image available Carex densa Lowell Ahart 2009-6-3 15826 Butte About 130 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 Highway 32, about 10 miles northeast of Chico. Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 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
  UCD140310  Carex feta L. P. Janeway 1987-6-13 2187 Butte at the Crain Mill site, 1.6 miles north on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  JEPS115995  Carex fracta Lowell Ahart 2009-6-3 15826 Butte By a small wash, about 130 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 279 Comment
  SEINET8067785 Image available Carex fracta L. Janeway, Gog, L 2008-1 3188 Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC31674  Carex gracilior L. Ahart 1977-6-16 1426 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  RSA754885  Carex gracilior L. Ahart 2009-6-18 15911 Butte 60 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET10927770  Carex gracilior Lowell Ahart 2007-4-16 Ahart 13675 Butte T17N, R4E, northeast 1/4 Section 11. 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, abouth 12 miles southeast of Oroville. 52 Comment
  SEINET7560148 Image available Carex gracilior L. P. Janeway, Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Oroville Dam Quad 7.5' quad. Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oroville, 2.1 km east of the Bidwell Bar Bridge, next to Craig Saddle Boat-in Campground. 290 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  UC826047  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. Comment
  CHSC59007  Carex integra Lowell Ahart 1992-7-21 6813 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CAS-BOT-BC94048  Carex inversa Peter F. Zika 2010-6-22 24981 Butte Montgomery Street near First Avenue, Oroville, Janeway's station, Sacramento Valley (ScV) 40 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
  CHSC113960  Carex lemmonii Lowell Ahart 2014-7-16 19676 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC42816  Carex lemmonii L. P. Janeway 1987-5-10 2043 Butte Mdw at jct of Skyway and Doe Mill/Humbug Rd; just N of Da Sable Reservoir. 838 Comment
  JEPS106372  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  JEPS103105  Carex microptera L. P. Janeway, B. Castro 2002-7-7 7617 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  UC108032  Carex multicaulis H. F. Copeland 1932-6-27 Butte Goverment Trail near Scotch-John Comment
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  CHSC102840  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
  CHSC84279  Carex praegracilis Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10221 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  SEINET7576411 Image available Carex straminiformis Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11381 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CHSC45072  Carex subfusca Vernon Oswald 1987-5-7 2379 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. On the bottom of a drying dredger pond. 74 Comment
  CAS-BOT-BC116732  Carex subfusca Lowell Ahart 1984-7-19 4751 Butte Ca. 1 1/2 mi SE of Bald Mountain, 1/4 mi E of Oak Point, ca 5 mi NE of Stirling City. 1500 Comment
  CHSC112101  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. 61 Comment
  SEINET11635243  Carex texensis L. P. Janeway 1989-1 3270 Butte Campus of California State University, Chico, N side of Big Chico Cr opposite Holt Hall 58 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
  CHSC109183  Castanea dentata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road,west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC249595  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1952-7-1 52 -131 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 Comment
  CHSC60588  Castilleja attenuata Vernon H. Oswald; Lowell Ahart 1993-4-21 5291 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 731 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  UCD122337  Castilleja attenuata M. Vincent 1964-4-9 532 Butte 1 1/2 miles south of Pearson Rd. Comment
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  JEPS80632  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte ca 0.25 mi e Cohasset Rd. (ca 9 mi ne of Chico); Cohasset Ridge 396 Comment
  UC726419  Castilleja lacera A. A. Heller 1941-5-9 16107 Butte 0.5 mi above old Clear Creek Post Office site (on the Clark Road to Paradise) Comment
  JEPS81861  Castilleja lacera L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5850 Butte ca 0.5 mi w Lumpkin Road (to Feather Falls) (along Forbestown road, about 10 mi e of Oroville) 609 Comment
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Dec 21 2012
  JEPS46017  Castilleja miniata L. R. Heckard 1956-8-6 823 Butte w of Jonesville (along road, near Butte Creek) Comment
  CAS-BOT-BC241126  Castilleja miniata A. A. Heller 1914-8-7 11658 Butte Summit back of and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC43963  Castilleja rubicundula subsp. rubicundula V. Oswald 1988-5-25 3340 Butte Gray Lodge Waterfowl Management Area, ca. 0.25 mi s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  POM43184  Castilleja subinclusa C. C. Bruce 1897-06 1938 Butte Little Chico. Comment
  CHSC115407  Catalpa bignonioides M. Rogers 2013-5-20 Butte City of Chico residence on Pennisue Way. 60 Comment
  CHSC38418  Caulanthus lasiophyllus Vernon Oswald 1983-4-9 301 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 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
  JEPS113416  Ceanothus diversifolius Lowell Ahart, Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  POM85326  Ceanothus integerrimus var. macrothyrsus Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  RSA107427  Ceanothus integerrimus var. puberulus L. S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  CDA42420  Ceanothus prostratus subsp. prostratus D. G. Kelch 2012-9-19 12 .368 Butte Forest Ranch. Garland Rd. 150 m E of Hwy 32 near forestry camp. Comment
  CHSC25458  Ceanothus velutinus Marc Hayes; Warner 1977-9-11 97 Butte At Humboldt Summit, on Butte-Tehama Co. line, ca. 10 m up the Pacific Crest Trail by Humboldt Peak. 2011 Comment
  CAS-BOT-BC52419  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CAS-BOT-BC52421  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  JEPS124193  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 -A Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  SEINET3375646  Centaurea solstitialis C. Lumer, S. Yost 2006-8-1 2454 Butte Chico, California. Near Motel 6. 91 Comment
  SEINET10454833  Centaurium floribundum Mary Susan Taylor 1979-10-13 Taylor 2271 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  SEINET10972989  Centaurium floribundum Mary Susan Taylor 1975-6-25 Taylor 793 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
  UC175570  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte n of Oroville (Olive Ranch); Table Mountain Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  SEINET10840940  Centaurium tenuiflorum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4128 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC288531  Centromadia fitchii J. Clausen 1932-9-16 657 Butte 20 miles S of Chico, between Richvale and Nelson Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  UC1609087  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte 1 1/2 mi. n. & 3 mi. e. Honcut (ca. 12 mi. s.e. of Oroville, on w. side of Dunstone Rd.) 60 Comment
  CHSC61523  Cephalanthera austiniae Lowell Ahart 1993-6-16 6963 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  CDA30204  Cephalanthus occidentalis var. californicus L. Ahart 2009-7-9 16019 Butte On the east edge 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. 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
  CHSC66677  Cephalanthus occidentalis var. californicus Vernon Oswald 1996-7-17 8061 Butte Sacramento River National Wildlife Refuge; Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  CAS-BOT-BC388257  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC38438  Chamaesyce glyptosperma Vernon Oswald 1983-7-3 800 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. In the parking lot. 103 Comment
  CHSC30216  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz vernal pool, 0.4 mi se of jct of Pentz (Benum) Rd and Hwy 99, ca. 10 mi s of Chico. 54 Comment
  CHSC52638  Chamaesyce hooveri R. D. Stone; R. E. Buck 1987-8-3 831 Butte Central Valley. Vina Plains, 2.3 miles SSW of the intersection of Highway 99 and Rowles Road, 0.2 miles S of the Butte-Tehama county line, E side of Southern Pacific railroad grade. Vernal pool. 51 Comment
  JEPS83925  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-3 831 Butte 2.3 mi ssw intersection of Hwy 99 and Rowles Rd (0.2 mi s of the Butte-Tehema county line); Vina Plains 51 Comment
  RSA726363  Chamaesyce maculata L. Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  UC765099  Chamaesyce ocellata R. F. Hoover 1938-8-2 3716 Butte 13 mi s Chico Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC31677  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1975-7-5 851 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, 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
  NY246351  Chamaesyce sulfurea A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, E of Chico Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  SEINET10529873  Cheilanthes cooperae Mary Susan Taylor 1980-4-16 Taylor 2484 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC78230  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC76414  Chenopodium album Lowell Ahart 1999-10-28 8312 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
  UCD97743  Chenopodium album Lowell Ahart 1981-11-6 3223 Butte Gray Lodge, south-west of Gridley. 35 Comment
  SEINET10479109  Chenopodium ambrosioides var. vagans Mary Susan Taylor 1975-10-3 Taylor 933 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 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
  JEPS119939  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte North of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC451371  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  CDA13278  Chimaphila umbellata G. F. Hrusa, T. D. Wilfred 1996-7-9 13126 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10874402  Chimaphila umbellata var. occidentalis Mary Susan Taylor 1978-9-9 Taylor 1907 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS117271  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SEINET3450920  Chondrilla juncea Unknown 2003-7-10 10372 Butte Forbestown, Forbestown, about 2 miles air northwest 290 Comment
  CAS-BOT-BC252673  Chorizanthe membranacea David D. Keck 1933-5-30 2406 Butte 3.0 miles southwest of Richardson Springs 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
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  SD8111  Chorizanthe stellulata Dr. C. C. Parry May 1882 Butte Chico Comment
  SEINET3450753  Chorizanthe stellulata Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10218 Butte Chico, Chico, about 1.5 miles east of Manzanita Avenue, Upper Bidwell Park, Rifle and trap range northeast of Horseshoe Lake, north of Parking Area E 100 Comment
  JEPS117264  Cicendia quadrangularis Lowell Ahart 2010-5-14 16645 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC46201  Circaea alpina subsp. pacifica L. P. Janeway 1988-7-2 2960 Butte Along road to French Cr 1.2 mi S of Coyote Gap. Above road. 1127 Comment
  POM271465  Circaea alpina subsp. pacifica Lyman Benson 1932-7-28 3962 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  CAS-BOT-BC278076  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CHSC94463  Cirsium douglasii var. breweri Lowell Ahart 2006-8-15 13188 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC288037  Cirsium occidentale var. venustum Lowell Ahart 1980-6-19 2388 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  CDA20150  Cirsium vulgare B. Smith August 1996 s.n. Butte Plumas National Forest; 0.5 mi E of Lumpkin. 1173 Comment
  CHSC21142  Cirsium vulgare M. S. Taylor 1975-8-31 878 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC438980  Cistanthe monosperma J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228755  Cistanthe umbellata Clarence R. Quick 1952-7-1 52 -118 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  HSC32601  Clarkia arcuata Kitsy Kelly 1974-4-20 24 Butte Table Mtn. Volcanic area Comment
  UC725467  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte e Chico (back of the Salmon Hole on creek); Chico Creek Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  SEINET10453145  Clarkia biloba subsp. brandegeeae Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4142 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  CHSC1102  Clarkia gracilis subsp. albicaulis M. Underhill 1952-7-2 Butte 304 Comment
  SEINET10939935  Clarkia mildrediae Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4745 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
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC89900  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  CHSC39034  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 mi SE of Stirling City, on the west side of the West Branch of the Feather River. Along the edge of the dirt road. 1100 Comment
  CHSC48630  Clarkia mildrediae subsp. mildrediae Vernon Oswald 1985-6-20 1846 Butte Hwy 32 0.2 mi s of Headwaters Rd. between Forest Ranch and Platte Mtn. Lookout. Near the road. 944 Comment
  LA206077  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi S of Arch Rock on Feather River Comment
  CHSC39037  Clarkia mosquinii Lowell Ahart 1983-6-26 4118 Butte About 15 miles ne of Oroville, about 2 miles se of intersection of the Oroville/Quincy Highway and Ponderosa Way; along Ponderosa Way. 500 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  LA206069  Clarkia mosquinii Brian Le Neve; 1996-7-4 83 Butte French Creek Road Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  SFV10918  Clarkia purpurea M. L. Vincent 1968-6-5 774 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  JEPS108567  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley. 0.5 km west of Larkin Road, 1.7 km south of Hwy. 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  CAS-BOT-BC163655  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC172382  Clarkia purpurea subsp. viminea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC164787  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC64118  Clarkia rhomboidea L. P. Janeway; Jean Hubbel, Dave Wood 1994-6-3 4655 Butte Forest Ranch; 0.5 mi east of Hwy 32 on Nopel Avenue and Cody Lane. Along side of dirt road. 725 Comment
  CAS-BOT-BC164797  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing rocky cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill 512 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
  RSA0059954  Clarkia unguiculata L. Ahart 2010-6-1 16759 Butte North side of the Guardian s Trail, about 1 mile east of the power lines, Upper Bidwell Park, about 3 air miles east of Chico. 181 Comment
  CHSC56066  Claytonia palustris L. P. Janeway 1988-7-29 3103 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 Comment
  CHSC95189  Claytonia palustris R. D. Fischer 2005-6-5 825 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  SEINET4855086  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville: S bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10572706  Claytonia parviflora Mary Susan Taylor 1981-5-15 Taylor 3745 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  SEINET10895984  Claytonia parviflora Mary Susan Taylor 1980-4-1 Taylor 2418 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CAS-BOT-BC439426  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-12 5644 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC33587  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-28 3562 Butte Shady rd embankment, e side of rd 23N28.2 (Big Bar Rd), ca. 0.1 mi n of its jct with 22N84, ca. 1.4 mi w of Chino Creek, ca. 23 air mi nw of Oroville. 944 Comment
  CHSC87421  Claytonia parviflora subsp. parviflora R. D. Fischer 2004-3-15 111 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  UC204570  Claytonia parviflora subsp. parviflora A. A. Heller 1914-4-6 11240 Butte 12 mi from Chico (Chico-Oroville road, on the banks of Dry Creek); Dry Creek Comment
  RSA32932  Claytonia perfoliata A. A. Heller 1920-4-10 13361 Butte Chico. Comment
  SEINET11933184  Claytonia perfoliata M. S. Taylor 1981-1 3807 A Butte Vallombrosia St., E of its jct with Espanade, Chico 30 Comment
  CHSC1379  Claytonia perfoliata subsp. perfoliata C. Durbrow 1938-3-10 Butte W. of Chico. 51 Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CHSC34945  Claytonia perfoliata subsp. perfoliata Debra Barton 1974-4-7 11 Butte Abundant at Campotel Campground, 3 mi e of Oroville on Hwy. 162, left side of left road entrance, 400 ft from entrance. Comment
  CHSC33572  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-27 3557 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  SEINET267150  Clematis lasiantha T. A. Ranker, P. G. Trapp 1994-6-17 1613 Butte Pence Road south of Paradise. 395 Comment
  CHSC38167  Clematis ligusticifolia Vernon Oswald 1983-7-13 866 Butte Upper Bidwell Park, Chico, at the locked gate on the dirt road at the e end of Centennial Ave. 85 Comment
  SEINET10964453  Collinsia sparsiflora var. bruceae Lowell Ahart 1991-4-8 Ahart 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 46 Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  JEPS105626  Collinsia tinctoria L. P. Janeway, John Hunt 2003-6-6 7814 Butte Northern Sierra Nevada Foothills. East-southeast facing slope above Lake Oroville 350 m northeast of the north end of Bidwell Bar Bridge 296 Comment
  UC392187  Collomia grandiflora E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  CHSC44313  Collomia heterophylla Lowell Ahart 1978-5-31 1747 Butte Along the South Fork of the Feather River, near Golden Trout Crossing, about 3 miles west of the Sly Ceek Reservoir. 731 Comment
  CHSC50414  Collomia linearis Vernon Oswald 1990-6-26 4319 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the upper north bank of the creek just upstream from Humbug Rd. 1761 Comment
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CDA13343  Corallorhiza maculata G. F. Hrusa, T. D. Wilfred 1996-7-9 13191 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  UC398907  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  SEINET10470000  Corallorhiza maculata Mary Susan Taylor 1981-5-27 Taylor 3804 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  UC196061  Cordylanthus tenuis subsp. viscidus A. A. Heller 1914-7-22 11586 Butte Little Summit 1463 Comment
  RSA7124  Coreopsis stillmanii C. B. Wolf 1933-5-19 4823 Butte 10 miles above Raymond on road to Coarse Gold. Comment
  CDA5367  Coriandrum sativum L. Ahart 2001-5-1 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC90089  Cornus nuttallii Brent E. Palmer 1991-4-4 16 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  JEPS107418  Coronopus didymus Lowell Ahart 2005-4-2 11685 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
  SD60237  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows, Gravely moist places Comment
  CHSC5961  Cotoneaster conspicuus M. MacArthur 1968-6-17 203 Butte SW end Administration bld., N corner, Chico State College campus. 60 Comment
  CHSC102995  Cotoneaster lacteus Lowell Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC115007  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Above the retaining wall, just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. 68 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
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CAS-BOT-BC427624  Crassula aquatica John Thomas Howell 1978-4-17 52835 Butte Table Mountain 381 Comment
  CAS-BOT-BC427628  Crassula aquatica Lowell Ahart 1982-5-14 3436 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC113201  Crassula aquatica Lowell Ahart 2014-4-16 19364 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
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC70850  Crassula connata Lowell Ahart 1998-4-8 7950 Butte 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CHSC40898  Crassula saginoides Lowell Ahart 1985-11-5 5227 Butte Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  CHSC46739  Crassula saginoides Lowell Ahart 1974-4-11 393 Butte Peter Ahart Ranch, about 2 miles north and 1 1/2 mile north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC427955  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  CDA32002  Crataegus laevigata L. Ahart 2009-5-3 15792 Butte On the 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 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the 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 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC110111  Crataegus monogyna L. P. Janeway 2012-3-21 10817 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC5963  Crataegus monogyna M. MacArthur 1968-6-17 204 Butte NW corner of Auditorium, ca. 20 ft. from entrance, Chico State College campus. 60 Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  UCD130979  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte west side of Ponderosa Way (Rim Rd.) under PGE lines, 1.1 miles north of its junction with Hwy 70 at Jarbo Gap. Comment
  CHSC41357  Crucianella angustifolia R. A. Schlising; J. D. Jokerst 1980-7-2 3816 Butte NW of De Sabla, 0.75 miles SW of crossing of Butte Creek. 658 Comment
  CHSC29959  Cryptantha affinis R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3783 Butte NW part of county, 0.6 mi N of jct Hwy 32 with Humboldt Road, along latter. 1219 Comment
  CHSC60965  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte On the east side of the dirt road, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS94328  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte about 8 air mi ne of Stirling City (along edge of the dirt road and n of the camps along Little Kimshew Creek, about 1/4 mi n of the County Road, e of Bald Mountain) 1219 Comment
  RSA718071  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  JEPS118004  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  SD122570  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, 2 miles east of the Old Yankee Hill, ca 16 miles northeast of Oroville 449 Comment
  CHSC93864  Cryptantha intermedia Lowell Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 354 Comment
  RSA718310  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 355 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  NY16718  Cupressus macnabiana C. B. Wolf 1934-10-5 6161 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET10966021  Cupressus macnabiana Mary Susan Taylor 1975-5-9 Taylor 568 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  UCD126365  Cuscuta Burt Ray 1950-8-1 s.n. Butte near Gridley. Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CHSC48362  Cuscuta pentagona Vernon Oswald 1987-6-12 2997 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  CHSC78509  Cuscuta pentagona Lowell Ahart 2000-8-28 8668 Butte West 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
  RSA739628  Cuscuta subinclusa L. P. Janeway, B. Castro 2008-8-5 9554 Butte Northern High Sierra Nevada, Plumas National Forest, upper end of Magee Ridge at a small gap betw Heinz Creek and Hibbard Creek, 2.7 air kim N of Coyote Gap. 1353 Comment
  CHSC76850  Cyperus difformis L. P. Janeway 1999-6-26 6487 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC81932  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  JEPS95922  Cyperus difformis Lowell Ahart 1999-8-13 8139 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
  UCD141017  Cyperus difformis H. L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  JEPS120107  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 -A Butte Lawn on the south side of the path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  UCD54066  Cyperus eragrostis E. M. Johnston 1915-1 W- 142 J Butte Biggs. Comment
  CHSC45158  Cyperus erythrorhizos Lowell Ahart 1974-11-9 671 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC68390  Cyperus erythrorhizos L. P. Janeway; C. A. Janeway 1986-10-4 1907 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  UCD141036  Cyperus erythrorhizos L. Ahart 1974-11-9 672 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110399  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC75977  Cyperus flavescens Lowell Ahart; Vernon H. Oswald 1999-8-13 8143 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
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  RSA795668  Cyperus iria L. Ahart 2012-8-6 18415 Butte West side of Richvale South Highway, about 1.5 miles south of Richvale. 31 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  SEINET13711406  Cyperus niger Lowell William Ahart, Lowell William Ahart 1999-1 8274 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  CHSC31459  Cyperus squarrosus L. Ahart 1980-7-29 2513 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC45150  Cyperus squarrosus Lowell Ahart 1972-5-24 112 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC65353  Cyperus squarrosus Lowell Ahart 1995-10-3 7674 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  UC1594703  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  UCSB63782  Cyperus squarrosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  CHSC28667  Cyperus strigosus J. D. Jokerst 1979-10-12 373 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Park Rd. 213 Comment
  CHSC38902  Cyperus strigosus Vernon Oswald 1983-6-20 724 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  JEPS120166  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET10467194  Cyperus strigosus Mary Susan Taylor 1979-10-3 Taylor 2222 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC28891  Cystopteris fragilis M. S. Taylor 1980-2-17 2365 Butte Ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  POM196539  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville. 1524 Comment
  CAS-BOT-BC190484  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  SEINET10515557  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 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; Yelow Pine Forest, granitic soils. 998 Comment
  POM313036  Damasonium californicum H. L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 mi W of Oroville. Comment
  CHSC59044  Danthonia californica var. americana Lowell Ahart 1992-7-21 6801 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  SEINET10483090  Darmera peltata Mary Susan Taylor 1980-3-19 Taylor 2387 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC11341  Datura ferox Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113117  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 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
  POM77818  Daucus pusillus C. C. Bruce 1898-06 2050 Butte By Chico Comment
  CHSC46061  Delphinium R. A. Schlising; R. Banchero, R. Preston 1981-6-11 4068 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of jct with Hwy 32 (at 'Lomo'). Comment
  CAS-BOT-BC8601  Delphinium hansenii Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC104825  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico. 188 Comment
  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CHSC84134  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  CHSC3986  Delphinium patens subsp. patens Kathy Sommarstrom 1967-4-15 28 Butte Found 400 yds west of covered bridge, 50 yds from creek on south side. 76 Comment
  CHSC51903  Delphinium patens subsp. patens Richard Steward 1988-4-2 2 Butte Ca 6 mi N, 0.4 mi NW of Paradise. 701 Comment
  CHSC56774  Delphinium patens subsp. patens M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC56775  Delphinium patens subsp. patens Kirsten Tarp 1982-6-3 182 A Butte Vilas Rd, Cohasset, NE of KPAY radio tower. 950 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
  CHSC56782  Delphinium patens subsp. patens M. S. Taylor 1981-4-8 3508 Butte N side of logging landing site, just w of power lines, off logging rd ca. 1/2 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  HSC38033  Dendromecon rigida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2484 Butte Just E of Magalia Comment
  UCD95265  Dendromecon rigida B. F. Smith 1970-8-5 97 Butte 2 miles north of Concow Reservoir, Lassen National Forest. 807 Comment
  SEINET10973508  Dentaria tenella var. palmata Mary Susan Taylor 1979-3-31 Taylor 1970 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC94287  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC26799  Deschampsia danthonioides M. S. Taylor; M. Hayes 1978-4-14 1547 Butte In vernal pools on e side of Williams Rd ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC38806  Deschampsia danthonioides Vernon Oswald 1982-4-16 Butte Bidwell Park, Chico, ca. about 800 ft n of Upper Park Rd. on the e side of the intermittent stream which crosses Upper Park Rd. 2.9 mi e of its junction with Wildwood Ave. 134 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC59045  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CDA24035  Dianthus armeria subsp. armeria L. Ahart 2004-7-11 11223 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  CHSC48253  Dianthus armeria subsp. armeria Vernon Oswald 1985-6-12 1828 Butte W side of Kunkle Reservoir se of Paradise. 445 Comment
  CHSC97791  Dianthus armeria subsp. armeria L. P. Janeway 2007-8-12 9156 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CHSC19648  Dicentra nevadensis K. R. Stern 1964-5-16 Butte Chico. Comment
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Nov 18 2009
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  CAS-BOT-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC500067  Dichelostemma capitatum L. S. Rose 1931-4-14 s.n. Butte Oroville Comment
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  RSA712798  Dichelostemma multiflorum L. P. Janeway 2005-6-26 8430 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  SEINET3243527  Dichelostemma multiflorum Carl B. Wolf 1937-1 8781 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte. 91 Comment
  CAS-BOT-BC501083  Dichelostemma multiflorum Lewis S. Rose 1945-5-12 45045 Butte Richardson Springs 304 Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  SEINET3885608  Dichelostemma multiflorum R. A. Vanbianchi 1974-4-20 215 Butte 300 yards south of the intersection of Pentz and Clark Rds.; 0 Comment
  CAS-BOT-BC503201  Dichelostemma volubile Carl B. Wolf 1937-5-13 8655 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi. E of Bangor 213 Comment
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  UCD63943  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville. 60 Comment
  CHSC42912  Digitaria sanguinalis Lowell Ahart 1987-7-3 5763 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
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10560063  Digitaria sanguinalis A. Arthur Heller 1914-6-2 Heller 11476 Butte Hills 8 miles north of Oroville. Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CHSC24985  Diplacus angustatus R. W. Conover 1975-5-7 1 Butte .7 mi ne of Chico Municipal Airport, .4 mi se of Cohasset Hwy on Cohasset Ridge. 304 Comment
  CAS-BOT-BC151925  Diplacus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico 304 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  CHSC33585  Diplacus grandiflorus M. S. Taylor 1981-5-5 3599 Butte E side of Lumpkin-La Porte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  CHSC49001  Diplacus jepsonii Vernon Oswald 1984-7-2 1339 Butte Humbug Summit. 2320 Comment
  CAS-BOT-BC153209  Diplacus kelloggii Gladys L. Smith 1976-4-1 s.n. Butte Table Mountain Comment
  CHSC33343  Diplacus mephiticus R. Banchero; R. Schlising 1981-6-22 526 Butte 1.1 mi e of Camp 18, 0.2 mi e of jct of Golden Trout Crossing and County Line Rd. Ca. 5 mi ne of Feather Falls town. 1280 Comment
  CHSC23585  Diplacus torreyi Nancy Mosman 1971-7-3 58 Butte In meadow along n side of Humboldt Road ca. 0.3 mi e of Butte meadows Ranger Station. 1371 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CAS-BOT-BC154039  Diplacus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road Comment
  SEINET8370227  Diplacus tricolor Christine C. Lorain 1995-4-30 2270 Butte just E of Floral Road in the northern part of Chico. 61 Comment
  POM76693  Dodecatheon clevelandii subsp. patulum C. C. Bruce 1897-02 2098 Butte Little Chico. Comment
  CHSC3506  Dodecatheon clevelandii var. patulum M. Gregg 1966-2-21 14 Butte Old Chico-Oroville Rd. So. East of Chico. 1/4 mile from Hwy 99E. 53 Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  CHSC112888  Downingia bicornuta var. bicornuta Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC112927  Downingia cuspidata B. Castro; Tom Boullion 2011-4-21 1846 Butte Sacramento Valley. N side of Thermalito Forebay/Power calanl, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on northside of Oroville. 71 Comment
  UCD23256  Downingia ornatissima W. R. Powell 1968-4-23 1474 Butte 2 miles SSE of Oroville. 71 Comment
  CDA6216  Draba verna var. aestivalis L. Ahart 2004-3-26 10705 Butte Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. Comment
  CHSC87199  Draba verna var. aestivalis Lowell Ahart 2004-3-26 10705 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  RSA79045  Draperia systyla E. K. Balls, P. C. Everett 1952-10-14 18214 Butte 2.4 mi. s.w. of Butte-Plumas Co. line on Hwy 24 274 Comment
  UCD123978  Drosera rotundifolia Barry Rice 2011-7-6 BR 110701 Butte no exact location. 1400 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  CDA38816  Duchesnea indica L. Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. Comment
  CHSC3524  Dudleya cymosa John Francis 1966-4-23 129 Butte Table Mt. Comment
  CHSC39017  Dudleya cymosa J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1783 Butte At the top of Bald Rock Dome in the Middle Fork of the Feather River. Comment
  CHSC4511  Dudleya cymosa C. Glascock 1965-5-15 417 Butte 15 Miles House area, 10.4 mi. ne of Chico city limits. Ca. 8 yds downihill from road. Comment
  CHSC77480  Dudleya cymosa subsp. cymosa Tim Stofer 1997-4-12 7 Butte On the west side of the trail 1 mi. from the head of the South Rim Train off South Park Dr. in upper Bidwell Park. 91 Comment
  CHSC34788  Dysphania ambrosioides L. Ahart 1981-11-6 3224 Butte Near the parking area a little w of the Graylodge Waterfowl Mgmt HQ, ca. 3/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  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
  CAS-BOT-BC197094  Echinochloa crus-galli Ira L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CAS-BOT-BC197098  Echinochloa crus-galli John Thomas Howell 1951-6-26 27519 Butte Big Bend Mt. 609 Comment
  CHSC84010  Elatine ambigua Lowell Ahart 2003-6-19 10291 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  JEPS122284  Elatine californica Lowell Ahart 2014-4-9 19349 Butte South of Rutherford Road, about 1/4 mile southeast of the headquarters of the Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC113635  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CHSC28856  Eleocharis acicularis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 458 Butte Ca. 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC55613  Eleocharis bella L. P. Janeway 1987-6-5 2143 Butte Small pool near confluence of Ram Creek and French Creek. 609 Comment
  JEPS104924  Eleocharis decumbens Dean W. Taylor 1995-8-6 15395 Butte 5 air mi NE of Stirling City, meadow 0.5 mi E of Bald Mountain summit 1706 Comment
  SEINET11746346  Eleocharis decumbens Unknown 1980-1 2459 Butte near intersection of Forbestown Rd & Black Bart Rd, ca 1 mi W of Robinson Mill Rd 671 Comment
  CHSC71199  Eleocharis engelmannii Lowell Ahart 1998-6-30 8014 Butte Southwest margins of a large seep, southwest of the lone oak tree, west of the cow chute on the west side of Cheorkee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC29283  Eleocharis macrostachya R. A. Schlising 1980-4-2 3538 Butte Richvale vernal pools. S of junction of Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC77999  Eleocharis macrostachya Lowell Ahart 2000-5-13 8339 Butte On the bottom of a small wash, south of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC8754  Eleocharis macrostachya S. Chulasmai 1966-5-20 39 Butte Horse-shoe (mud) Lake. Comment
  JEPS94769  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CDA38946  Eleocharis macrostachya G. D. Barbe, T. C. Fuller 1982-6-14 3678 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CAS-BOT-BC112064  Eleocharis quinqueflora Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC100524  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  SEINET9084534  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  JEPS104211  Eleocharis rostellata Lowell Ahart 2003-5-27 10224 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CHSC46686  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-8-15 3936 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Meadow adjacent to a shallow spring-fed lake n of and visible from the road. 1752 Comment
  CAS-BOT-BC227294  Elymus elymoides V. Oswald; L. Ahart 1988-7-29 3640 Butte Ca. 5 mi (air) se of Jonesille [Jonesville] on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC227298  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  CHSC101797  Elymus elymoides subsp. californicus Lowell Ahart 2009-5-15 15683 Butte About 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  UCD61886  Elymus glaucus L. E. Hazeltine 1916-7-13 Butte Chico. Comment
  UCR143543  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CHSC82474  Elymus stebbinsii subsp. septentrionalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9738 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC102177  Elytrigia pontica subsp. pontica Lowell Ahart 2009-8-23 16299 Butte On dry soil, about 100 yards south of the GPS reading, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 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
  UC600547  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-7-19 Butte along Butte Creek Jonesville Comment
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC23767  Epilobium densiflorum M. S. Taylor 1975-6-25 800 Butte Along trail, ca. 100 yds w of Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC28804  Epilobium densiflorum J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 406 Butte In bottom of vernal pools. Top of Table Mt, 300 m NW. of the intersection of Cherokee Rd and east edge of section. Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC48618  Epilobium densiflorum Vernon Oswald 1985-5-28 1788 Butte Oroville-Quincy Hwy 1.1 mi n of Simmons Rd. 312 Comment
  CHSC65170  Epilobium densiflorum Lowell Ahart 1995-8-19 7609 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC46578  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald 1989-7-15 3859 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Ditch in the sw corner of the meadow. 1767 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
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC115283  Epilobium minutum Lowell Ahart 2015-4-30 20120 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  HSC16315  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi. S of Pulga, N Fork of the Feather River 579 Comment
  JEPS108857  Epilobium minutum Lowell Ahart 2006-5-10 12623 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  JEPS34387  Epilobium minutum Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8863 Butte above side road off U.S. highway 40 (at n base of grade over Jarbo Gap and just before bridge across Feather River, 0.75 mi s of Pulga); Canyon of N. Fk. Feather River 426 Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94066  Epilobium torreyi R. Fischer 2005-6-12 743 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 Comment
  JEPS38237  Epilobium torreyi W. L. Jepson 1934-5-4 16613 Butte 2 1/2 mi e Cana Comment
  CHSC38887  Epipactis gigantea Vernon Oswald 1983-6-2 605 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CHSC8750  Epipactis gigantea S. Chulasmai 1961-4-30 38 Butte Heloepine Spring (Upper Bidwell Park). Comment
  CAS-BOT-BC57997  Equisetum arvense Saichi Kawahara 1968-5-4 360 Butte Colusa-Hamilton City Road, 1 mi. n. of Princeton Ferry, w. bank of Sacramento River. 30 Comment
  SEINET1783079  Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 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
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  CHSC49240  Eragrostis hypnoides Vernon Oswald 1984-6-3 1252 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On the edge of the river. 39 Comment
  UC1562294  Eragrostis hypnoides Lowell Ahart 1990-7-15 6557 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CDA31779  Eragrostis pectinacea L. Ahart 2002-9-7 9927 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
  CHSC42143  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-8-19 4790 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC40646  Eragrostis pilosa var. pilosa Lowell Ahart 1985-10-12 5202 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CAS-BOT-BC168362  Eremogone ferrisiae Lowell Ahart 1980-5-29 2362 Butte 2 1/2 miles north-east of Mountain House 1100 Comment
  CHSC41869  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC291275  Ericameria bloomeri H. F. Copeland 1920-8-25 206 Butte Jonesville 1219 Comment
  CAS-BOT-BC298292  Ericameria nauseosa var. speciosa H. E. Brown 1896-11-15 46 Butte Near Clear Creek 53 Comment
  CAS-BOT-BC295163  Erigeron inornatus Lowell Ahart 1983-7-24 4206 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  SEINET10971237  Erigeron inornatus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4245 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  POM33313  Erigeron inornatus var. inornatus C. C. Bruce 1897-05 1990 Butte Little Chico. Comment
  UC201340  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC295468  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  UC1730242  Erigeron petrophilus var. sierrensis L. P. Janeway 1998-7-31 5906 Butte Lost Creek Reservoir dam, along dirt road 100 ft above N end of 981 Comment
  POM34274  Erigeron philadelphicus Mrs. R. M. Austin, C. C. Bruce 1898-05 2077 Butte Iron Canyon. Comment
  CHSC40479  Erigeron strigosus Lowell Ahart 1985-7-24 5155 Butte Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  CHSC108812  Eriobotrya deflexa Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  POM305187  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 594 Butte Feather River Hwy. Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CHSC32140  Eriogonum nudum var. pubiflorum L. Ahart 1977-10-19 1605 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in open pasture fields, it can also be found on small gravel bars along small washes and on dredger piles along North Honcut Creek. 50 Comment
  CHSC39015  Eriogonum nudum var. pubiflorum J. D. Jokerst 1983-8-21 1928 Butte Top of North Table Mt., ca 1/3 mile north of Beatson Hollow. Common along the edge of the basalt mesa in accumulation of basalt talus or on cliff faces and thin rocky soils. 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
  CHSC50840  Eriogonum umbellatum var. nevadense Vernon Oswald; Lowell Ahart 1990-7-19 4373 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  CAS-BOT-BC262210  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC100872  Eriophyllum lanatum var. integrifolium L. P. Janeway; Linus Gog 2008-7-18 9437 Butte Northern High Sierra Nevada. Along Philbrook Creek between the east end of Philbrook Reservoir and Concow Road. 1689 Comment
  CHSC101281  Erodium brachycarpum Lowell Ahart 2009-4-3 15527 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC4003  Erodium brachycarpum L. R. Alexander 1967-3-29 13 Butte Found 1 mi. from Chico on the left hand side of Paradise road. 60 Comment
  POM88768  Erodium cicutarium C. C. Bruce 1898-05 2385 Butte [No location information on label.] Comment
  UC856289  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte near Cohasset; Sierra foothills Comment
  POM95436  Erysimum capitatum var. capitatum C. C. Bruce 1898-05 2384 Butte [No locality information provided] Comment
  CHSC102624  Erythranthe cardinalis Lowell Ahart 2009-8-3 16261 Butte Along a small drainage, about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC65178  Erythranthe cardinalis Lowell Ahart 1995-8-19 7617 Butte East side of North Huncut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CAS-BOT-BC153575  Erythranthe floribunda Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC79577  Erythranthe glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte E roadside of Hwy 32, ca. 1 mi N of road to Butte Meadows. Vicinity of Loma. 1097 Comment
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Mar 10 2006
  CHSC31965  Erythranthe guttata J. D. Jokerst 1979-4-20 1205 Butte Top of North Table Mt., ca. 200 meter NE of the junction of Cherokee Rd. and the E sde of the mountain. Comment
  CHSC44669  Erythranthe guttata R. Banchero 1980-6-6 202 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  CHSC44743  Erythranthe guttata R. Banchero 1980-6-23 262 Butte Along Eagle Gulch Rd 1.8 mi N of its jct with Laporte Rd, 1.6 mi SW of Sly Reservior. 1066 Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  SEINET10469666  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3428 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC49690  Erythronium multiscapideum Vernon Oswald 1985-4-3 1697 Butte Concow Rd. n of Lake Concow. 792 Comment
  JEPS96566  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town 731 Comment
  CAS-BOT-BC504524  Erythronium multiscapideum C. C., Mrs. Bruce 1898-5-1 2011 Butte Butte Creek Comment
  CAS-BOT-BC504528  Erythronium multiscapideum Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  CAS-BOT-BC504537  Erythronium multiscapideum John Thomas Howell 1955-6-14 30438 Butte Magalia 731 Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  SBBG70183  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole on Chico Crk, E of Chico Comment
  POM253319  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-17 15041 Butte Slope back of the Salmon Hole on Chico Creek east of Chico 122 Comment
  CAS-BOT-BC402972  Eschscholzia californica Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  CHSC24876  Eschscholzia californica M. B. Simpson 1976-4-4 13 Butte Ca. 2 yds w of Cohassett Hwy, ca. 7 mi n of Chico. 109 Comment
  CHSC3845  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, 300 yds. e of Longfellow Bridge, Chico. 27 Comment
  SD239843  Eschscholzia lobbii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18759 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  SEINET10476228  Eschscholzia lobbii Mary Susan Taylor 1980-4-6 Taylor 2453 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  UC894599  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  CHSC46833  Euonymus occidentalis R. A. Schlising; F. J. Fuller 1988-6-17 4543 Butte NE of Brush Creek and Mountain House, at Jordan Creek. 1097 Comment
  UC1586472  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4736 Butte Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.) at Jordan Creek (e. of Oroville-Quincy Hwy., ca. 5.75 mi. (air) n.e. of Brush Creek) 1082 Comment
  UC1609453  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  CAS-BOT-BC202421  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville 45 Comment
  RSA724815  Euthamia occidentalis L. Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC93657  Festuca Lowell Ahart 2006-5-19 12635 A 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. 405 Comment
  CDA35053  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada; Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  JEPS110240  Festuca californica var. californica Lowell Ahart 2006-5-10 12626 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10507967  Festuca subulata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4107 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  UC1586629  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte about 1.5 mi sw Forbestown Reservoir (along the s side of the dirt road that goes to the Forbestown Reservoir) 609 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CAS-BOT-BC77692  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  UCD113236  Fragaria vesca L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SD2199  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville, in low woods 1550 Comment
  CAS-BOT-BC55651  Frangula purshiana A. A. Heller 1913-6-7 10821 Butte West Branch of the North Fork of the Feather river near Stirling 914 Comment
  CHSC43730  Frangula purshiana Vernon Oswald 1984-6-7 1269 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. 1109 Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  CHSC3569  Fritillaria affinis R. D. Briggs 1966-2-22 48 Butte Salmon Hole,' 4 miles above the Bidwell Park golf course, Chico. 106 Comment
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  HSC72756  Fritillaria eastwoodiae M. S. Taylor, D. V. Hemphill 1981-3-18 3430 Butte Ridge NNW of sawmill Peak of Jordan Hill Rd., 1.0 mi. NE of Magalia 701 Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  CHSC24788  Fritillaria recurva C. E. Stopher 1976-4-18 28 Butte 2.7 km sse of Forest Ranch. 489 Comment
  CHSC4198  Fritillaria recurva J. E. Bowlin 1967-3-10 4 Butte Ca. 10 feet e of Cohasset Rd. and ca. 6.1 miles n of corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  CAS-BOT-BC508152  Fritillaria recurva A. A. Heller 1939-4-26 s.n. Butte Near the Diamond Match plant at Stirling City 1066 Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset 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
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  UCR64464  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Northern Sierra Nevada Mtns., Jonesville, gulch draining into Colby Canyon 1524 Comment
  CHSC28493  Galium bolanderi M. S. Taylor 1979-7-22 2168 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
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 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
  JEPS52685  Galium bolanderi Lauramay T. Dempster 1964-7-24 4044 Butte roadbank 3 mi s Nimshew 487 Comment
  SBBG29184  Galium bolanderi E. B. Copeland 1930-7-25 Butte Jonesville Comment
  JEPS18286  Galium bolanderi Rimo Bacigalupi with H. Whisler 1957-7-26 6037 B Butte along Humbug Rd. 2.2 mi sw Nimshew (at eastern canyonside of creek, roadbank); Butte Creek 609 Comment
  UC600428  Galium grayanum H. F. Copeland 1928-8-29 1015 Butte summit of Humboldt Road Neighborhood of Jonesville 2133 Comment
  SEINET10836827  Galium grayanum Mary Susan Taylor 1980-8-2 Taylor 3202 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC111120  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte Southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC116732  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 mile (air) northeast of Honcut. 44 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
  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
  SEINET10869772  Galium parisiense var. leiocarpum Lowell Ahart 1991-5-12 Ahart 6652 Butte On the banks of a small wash, Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 49 Comment
  CHSC52130  Galium porrigens var. tenue Paul K. Kirk 1981-3-10 4 Butte N side of Cohasset Rd., 50 m NE of its jct. with Rock Creek Rd., 14.5 km N of Chico. 135 Comment
  JEPS98579  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UCD121927  Galium tricornutum D. B. Marcum 1969-4-12 20 Butte 18.6 miles north of Marysville on State Highway 70. 24 Comment
  SEINET10500751  Galium trifidum subsp. subbiflorum Mary Susan Taylor 1975-9-12 Taylor 906 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  CHSC28430  Galium triflorum M. S. Taylor 1979-10-5 2337 Butte On SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  SEINET10500649  Galium triflorum Mary Susan Taylor 1981-5-14 Taylor 3714 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
  UCD159565  Gamochaeta ustulata D. S. Park 2011-6-24 302 Butte Growing on edges of Thermalito Afterbay. 43 Comment
  POM73529  Garrya fremontii C. C. Bruce s.n. Butte (Near) Chico. Comment
  RSA795641  Garrya fremontii L. Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 423 Comment
  JEPS127202  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  UCD66573  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville. Comment
  JEPS107518  Gastridium ventricosum Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  UC1609290  Gaultheria ovatifolia Lowell Ahart 1993-8-8 7149 Butte 1/2 mi nw of Lewis Flat (3/4 mi nw of the Sly Creek Dam) 1097 Comment
  CHSC11779  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Along Butte Creek. 1650 Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 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
  CHSC60998  Gayophytum humile Lowell Ahart 1993-6-26 7033 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC94246  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CHSC115887  Genista monspessulana M. Sutton; C. Yasuda, S. Luse 2013-4-9 26 Butte Centerville Flumes. Near trail shoulder. 350 Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC63817  Gentianopsis simplex S. C. Morey 1983-7-23 593 Butte Cherry Hil Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  CDA5617  Geranium dissectum L. Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  SBBG128462  Geranium dissectum L. Ahart 2012-4-30 17926 Butte ca. 20 yards SE of the intersection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 mi NE of Chico, S part of Upper Bidwell Park 250 Comment
  CHSC7107  Geranium molle James M. Watson 1969-4-4 7 Butte 2.1 mi e of Keefer Road and Cohasset Highway on s edge of Cohasset Highway. 182 Comment
  SEINET10495195  Geranium molle Lowell Ahart 1990-4-8 Ahart 6435 Butte East side of Pacific Heights Road, ca. 3.5 miles southwest of Oroville. T19N R3E c/S35. Foothill Woodland. 34 Comment
  UC392206  Geum macrophyllum E. B. Copeland 1929-7-25 Butte Jonesville 1500 Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  POM264779  Gilia capitata subsp. mediomontana Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  HSC45825  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UC880189  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CHSC21741  Githopsis pulchella Robert A. Schlising 1964-6-11 2723 Butte Few miles south of Paradise along Honeyrun Road. Comment
  CHSC38288  Githopsis specularioides Vernon Oswald 1983-4-25 381 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  SEINET10464548  Githopsis specularioides Mary Susan Taylor 1980-4-18 Taylor 2526 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  CHSC24987  Gleditsia triacanthos Cark Pejsa 1976-3-21 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  CDA13341  Glyceria elata G. F. Hrusa, T. D. Wilfred 1996-7-9 13189 Butte Sierra Nevada; Wet, deeply shaded springline above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Individuals to 2 m. tall. Coniferous forest, w/ generally dry understory. Comment
  CHSC59047  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte Near a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  SEINET10843174  Glyceria elata A. Arthur Heller 1928-7-10 Heller 14694 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CHSC38493  Glycyrrhiza lepidota Vernon Oswald 1983-6-2 607 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CHSC51873  Glycyrrhiza lepidota L. P. Janeway 1988-6-5 2729 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  SEINET10905046  Gnaphalium Mary Susan Taylor 1979-10-13 Taylor 2257 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
  CHSC45004  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC25448  Goodyera oblongifolia Hayes; Warner 1977-9-11 75 Butte Ca. 100 m n of road between Jonesville and Butte Meadows, exactly 8.4 mi from the junction of the Butte Meadows road with Hwy 32. 1219 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, 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 intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC48989  Gratiola ebracteata Vernon Oswald 1987-8-10 3200 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  UC175440  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte n Oroville (Table Mountain Olive Ranch); Table Mountain Olive Ranch Comment
  RSA496348  Hackelia californica Elaine Joyal, D. Mehlman 1988-7-3 1308 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  RSA4141  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville. 1500 Comment
  CHSC86586  Helianthella californica var. nevadensis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7859 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.2 km east-southeast of south end of Bidwell Bar bridge. 277 Comment
  CHSC93866  Helianthella californica var. nevadensis Lowell Ahart 2006-6-9 12644 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  CHSC47989  Heliotropium curassavicum Vernon Oswald 1983-6-28 778 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CHSC97756  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  UC478493  Heracleum lanatum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  CHSC75250  Hesperevax caulescens Jennifer Slater 1997-4-27 35 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 60 Comment
  CHSC101680  Hesperocnide tenella Lowell Ahart; Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC49847  Hesperocnide tenella Vernon Oswald 1990-3-7 4137 Butte North side of Skyway between Chico and Paradise, ca. 0.2 mi e of the double power transmission lines. 137 Comment
  CHSC78153  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte Near the southeast margin of the Thermalito Afterbay, west of the poor dirt road, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. 42 Comment
  JEPS104299  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC33798  Heterocodon rariflorum M. S. Taylor 1981-4-28 3567 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. 929 Comment
  UC1609085  Heterocodon rariflorum Lowell Ahart 1993-6-20 6981 Butte about 1 mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10460705  Heterocodon rariflorum Edwin B. Copel 1928-8-18 Copeland 945 Butte JONESVILLE, ALLUVIAL SANDS Comment
  NY43614  Heteromeles arbutifolia S. Bianco 1995-11-3 1050 Butte 0.25km N of Concow School, on S end of Concow Rd 549 Comment
  SEINET10839198  Heterotheca grandiflora Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4293 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CDA7878  Heterotheca oregona var. rudis L. Ahart 2002-9-27 9940 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA25404  Heuchera micrantha G. D. Barbe, T. C. Fuller 1982-6-14 3683 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  UC1476848  Hibiscus lasiocarpos Lowell Ahart 1979-9-8 Butte along rd. w. of by 3 mi. Nelson (Nelson is ca. 8 mi. n.w. of Oroville) 35 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC94562  Hirschfeldia incana Lowell Ahart 2006-9-13 13330 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  UC177574 Image available Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  CHSC38521  Hoita macrostachya Vernon Oswald 1983-7-28 936 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 207 Comment
  JEPS114985  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville 305 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  CAS-BOT-BC150117  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  CHSC109604  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC75430  Hordeum marinum subsp. gussoneanum Jennifer Slater 1997-4-12 21 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC54388  Hordeum murinum subsp. leporinum M. Bailey 1991-3-18 639 Butte On top of a hill northwest of Wallis Pond, Butte College campus. 106 Comment
  CHSC43123  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  SD2233  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CAS-BOT-BC536259  Horkelia tridentata var. tridentata H. C. Cantelow 1940-5-10 s.n. Butte 2.3 miles west of Brush Creek Ranger Station Comment
  CHSC74089  Hosackia oblongifolia var. oblongifolia B. Castro; E. Hubert 1996-7-16 684 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on S-facing slope of recently burned area. 1188 Comment
  CHSC96935  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 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
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  SEINET10882700  Hypericum anagalloides Lowell Ahart 1977-6-3 Ahart 1403 Butte Peter Ahart Ranch, Honcut. Valley Grassland. Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CDA31947  Hypochaeris glabra L. Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS117521  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  SEINET10532857  Ibicella lutea Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5158 Butte T17N R1E nw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, just se of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  RSA137403  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22525 Butte State Highway 32, 6.9 miles south from Lomo, at junction with road from Butte Meadows 1037 Comment
  RSA150570  Iris hartwegii Lee W. Lenz 1961-6-20 24350 Butte Feather River Canyon, between first and second power dams-- near Cresta power station Comment
  CHSC93187  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC24780  Iris macrosiphon D. E. Hale 1976-4-10 16 Butte N side of Vilas Rd, ca. 25 m e of Vilas Rd. - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC78103  Iris macrosiphon Caleb E. Casey 1999-4-9 Butte Bear Hole, Upper Bidwell Park. 121 Comment
  CHSC29118  Isoetes nuttallii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2438 Butte Ca. 150 ft nw of jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  JEPS98358  Isolepis cernua Lowell Ahart 2000-5-24 8390 Butte 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, E side of North Honcut Creek) 39 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  JEPS118484  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  RSA134790  Juglans hindsii Percy C. Everett, E. K. Balls 1959-10-20 23906 Butte Henshaw Ave., Chico. 59 Comment
  CAS-BOT-BC109890  Juncus Lowell Ahart 1981-8-31 3058 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 750 Comment
  CHSC97062  Juncus acuminatus Lowell Ahart 2007-7-27 14396 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  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
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  CHSC42079  Juncus balticus L. A. Hinman 1986-4-3 7 Butte Ca. 6.5 mi ne of Chico. NW side of Mud Creek, ca. 20 yd w of creek. 195 Comment
  CHSC28664  Juncus balticus subsp. ater J. D. Jokerst 1979-11-4 401 Butte At creek edge in meadow. 100 mets. SE. of intersection Butte Cr. and Humbug Rd. (at Butte Creek House). 1767 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
  CHSC36969  Juncus bufonius var. bufonius M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4366 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC42378  Juncus bufonius var. bufonius Lowell Ahart 1987-5-6 5545 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC98958  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 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
  JEPS117241  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  JEPS107948  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS127084  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC1609502  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC41304  Juncus effusus subsp. pacificus S. C. Morey 1983-7-22 540 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC97139  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 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
  CHSC41305  Juncus ensifolius S. C. Morey 1983-7-22 541 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  CHSC50697  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562429  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte about 0.12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  UC1609084  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte about 1/2 mi s of Quartz Hill (tracks of a logging road) 1219 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open 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
  SEINET10472447  Juncus howellii Lowell Ahart 1983-9-17 Ahart 4427 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  RSA795245  Juncus laccatus L. Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 air miles northeast of Clipper Mills. 1134 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
  UC1438369  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  CAS-BOT-BC110135  Juncus leiospermus var. leiospermus Lowell Ahart 1984-5-7 4589 Butte Near Kunkle Res., south of Paradise. 600 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  JEPS110153  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12584 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  CHSC59022  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte In a small meadow, about 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 Comment
  CHSC64243  Juncus nevadensis S. C. Morey 1983-8-3 692 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS117670  Juncus nevadensis Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS121936  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC113402  Juncus orthophyllus Lowell Ahart 2014-7-2 19543 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  JEPS113879  Juncus oxymeris Lowell Ahart 2007-7-7 14264 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  CHSC96916  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 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
  RSA755380  Juncus patens L. Ahart 2009-7-9 16004 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  UCD141879  Juncus phaeocephalus var. paniculatus J. W. Jones 1922-7-1 s.n. Butte Rice Station, Biggs. Comment
  CHSC113109  Juncus tenuis Lowell Ahart 2013-11-13 19241 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
  CHSC96963  Juncus triformis Lowell Ahart 2007-6-12 14070 Butte Along swales, 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
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  CHSC38925  Juncus uncialis Vernon Oswald 1983-5-15 499 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure (500 ft e of the junction of Upper Park Rd. and Wildwood Ave. In vernal pond. 85 Comment
  RSA755420  Juncus usitatus L. Ahart 2009-7-4 15999 Butte West side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterfowl Management Area, about 6 air miles southwest of Gridley. 21 Comment
  UC577653  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte on Neal Road 8 mi se Chico 121 Comment
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  UCD80781  Keckiella corymbosa CNPS SN Foothill Team 2005-7-13 Survey Butte North Table Mountain. Comment
  CAS-BOT-BC237823  Keckiella lemmonii Lowell Ahart 1982-9-29 3841 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley 1200 Comment
  CHSC31449  Keckiella lemmonii L. Ahart 1980-9-10 2644 Butte Along the edge of the rd ca. 7 mi e of Milsap Bar, ca. 32 mi ne of Oroville. Comment
  LA208506  Kelloggia galioides E. B. Copeland; 1930-8-10 Butte Jonesville 1550.0 Comment
  UC392182  Kelloggia galioides E. B. Copeland 1920-7-16 Butte Jonesville 1550 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UCR219110  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 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
  CHSC26818  Koeleria phleoides M. S. Taylor 1978-5-7 1594 Butte On e side of Williams Rd, ca. 1/2 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CAS-BOT-BC340328  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  OBI68607  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 282 Chico Rd, Oroville Comment
  CAS-BOT-BC274276  Lachnagrostis filiformis Earle T. Gammon 1959-7-6 s.n. Butte Rice Exp. Station, Biggs Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC113600  Lactuca saligna Lowell Ahart 2014-8-24 19731 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
  CHSC102720  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC32542  Lactuca serriola L. Ahart 1977-10-19 1601 Butte Near the garden. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC365  Lactuca serriola D. Bower 1953-8-13 Butte 3A Llano Seco. Rice field. 30 Comment
  CAS-BOT-BC341296  Lagophylla glandulosa R. F. Hoover 1965-10-16 9719 Butte Deer Creek road east of Chico Comment
  JEPS94817  Lagophylla glandulosa Lowell Ahart 1998-9-11 8059 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  UC828870  Lagophylla glandulosa A. A. Heller 1914-5-14 11401 Butte treeless plain near Clear Creek Comment
  CAS-BOT-BC341304  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CAS-BOT-BC341308  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise 213 Comment
  CAS-BOT-BC341314  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC746  Lamium amplexicaule M. Davidson 1929-3-21 Butte Foothill field. 54 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  RSA0060802  Lamium purpureum Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CHSC35653  Lasthenia californica R. E. Preston 1982-4-7 237 Butte W side of Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  SEINET3450912  Lasthenia californica Unknown 2003-4-10 10052 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CAS-BOT-BC354124  Lasthenia fremontii H. E. Brown 1897-4-15 153 Butte Near Clear Creek. 53 Comment
  CHSC112890  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET10971150  Lasthenia fremontii Mary Susan Taylor 1974-4-24 Taylor 188 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 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
  CHSC45006  Lasthenia glaberrima Lowell Ahart 1979-5-25 1888 Butte On the edges of pond, west of the Western Pacific Railroad, about 2 air miles south of Palermo. 33 Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  CHSC30374  Lasthenia gracilis J. D. Jokerst 1979-3-9 1142 Butte Top of North Table Mt., 20 M N of Cherokee Rd where it intersects the E edge of the section. Comment
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Jan 19 2011
  UCD106434  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  UC179640  Layia fremontii A. A. Heller 1914-3-28 11235 Butte 8 mi n Oroville Comment
  CHSC50651  Leontodon saxatilis subsp. longirostris Lowell Ahart 1990-5-25 6494 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Area, about 1 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC10840  Lepidium nitidum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11957675  Lepidium nitidum Unknown 1966-1 324 Butte ca 8 mi E of Oroville at 6120 Woodleaf St. Rt., 300 yards off Feathervale 244 Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC33262  Lepidium pinnatifidum R. E. Preston 1981-6-19 95 Butte At roadside, 300 m w of Headquarters, Gray Lodge State Wildlife Area, ca. 13.5 km ssw of Gridley. 20 Comment
  CHSC77816  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte Around the margins of the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CHSC77817  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte East margin of road leading to the Huncut Substation, on the south side of Lower Honcut Road, about 200 feet east of Highway 70, about 3 miles west of Honcut. 27 Comment
  JEPS95945  Leptochloa fascicularis Lowell Ahart 1999-8-13 8153 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
  SACT001406  Leptochloa fascicularis Herbert Mason 1945-9-19 Butte Stem rooting at nodes from plants in flooded area, northwest of pennington. Comment
  CHSC51289  Leptochloa fusca subsp. fascicularis Lowell Ahart 1990-9-30 6607 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC66176  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7662 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  SEINET10588903  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-14 Ahart 5480 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road about 6 miles southwest of Oroville. Valley grassland. 37 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC2430  Leptosiphon filipes R. Carter 1965-6-17 236 Butte Found ca. 15 mi. NE of Oroville at Bald Rock Dome, 15 yds. E of Bean Creek Rd. on road that goes to the dome. 1051 Comment
  CHSC26732  Leptosiphon filipes M. S. Taylor; M. Hayes 1978-4-14 1561 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CHSC94725  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  RSA718954  Lessingia nemaclada L. Ahart 2006-9-28 13362 Butte About 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 481 Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  UCD159567  Leucanthemum maximum D. S. Park 2011-6-27 304 Butte East shore of Thermalito Afterbay. Growing on roadsides. Disturbed. 1999 Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 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
  UC392224  Lilium pardalinum E. B. Copeland Jul 1929 Butte Jonesville , Butte Creek (along Butte Creek) 1550 Comment
  CHSC46241  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-26 1085 Butte Ca 7.5 km (air) ese of Jonesville (where Humboldt Road crosses Jones Creek). Ca. 0.45 km e of meadow where Humbug Summit Road crosses Willow Creek. 1890 Comment
  CAS-BOT-BC133047  Lilium washingtonianum subsp. washingtonianum A. A. Heller 1928-6-28 14670 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC133043  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC24944  Limnanthes alba M. L. McCrum 1976-4-26 18 Butte Ca. 6.0 mi sw of Cohasset on Cohasset Rd., .25 mi e on dirt rd. 365 Comment
  CDA35341  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico; 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. 0 Comment
  UCSB45759  Limnanthes douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road, 6 miles north on Derrick Road from Table Mt. Road Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  UCD116504  Limnanthes douglasii Harriet Sindal 1970-4-25 2 Butte on Cherokee Road, 4.7 miles north from its intersection with Nelson Avenue and Clark Road, west from gate, North Table Mountain. 335 Comment
  JEPS104319  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  CHSC38539  Limnanthes douglasii subsp. rosea Vernon Oswald 1983-3-5 117 Butte Upper Bidwell Park, Chico, near the s-e corner of the Omicron Enclosure. 85 Comment
  CAS-BOT-BC45924  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road Comment
  CHSC102870  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-24 Butte Northern Sacramento Valley. Vernal pool swale complex on a ridge of basalt on the east side of the Potter Road bike path and north of Humbug Road. The vernal pool/swale complex flows into a drainage that continues west into the Little Chico Creek Overflow Channel. 135 Comment
  RSA715420  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 29 Comment
  CHSC82232  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  CHSC3960  Linanthus dichotomus E. P. Parreno 1967-3-30 28 Butte Upper Bidwell Park Road near the Mun. Golf Course. Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CAS-BOT-BC240367  Linnaea borealis subsp. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 Comment
  JEPS108775  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC36126  Lithocarpus densiflorus var. densiflorus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54409 Butte Near Mountain House on Oroville - Quincy road 1051 Comment
  HSC43092  Lithophragma affine Maralyn O'Meara 1974-4-20 296 Butte Table Mtn. 305 Comment
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CAS-BOT-BC430881  Lithophragma bolanderi Lowell Ahart 1981-4-9 2753 Butte North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC36523  Lithophragma campanulatum L. Ahart 1982-5-8 3421 Butte Near the edge of the road at Forbestown Reservoir. 700 Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  SJSU5717  Lithophragma parviflorum var. trifoliatum T. C. DeWitt 1971-4-2 Butte Humboldt Rd, 1 mi S of intersection with Hwy 32 304 Comment
  CAS-BOT-BC428450  Lithophragma trifoliatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CHSC27667  Lithospermum californicum Mike O'Bryan; Robert A. Schlising 1978-4-17 3219 Butte N of Forest Ranch, on ridge above Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CDA3840  Lobularia maritima L. Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC33670  Lolium multiflorum L. Ahart 1981-5-24 2834 Butte Wash in one of the pasture fields on Peter Ahart Ranch, 2 mi e of Honcut. 50 Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  CAS-BOT-BC271176  Lolium temulentum John Thomas Howell 1976-4-1 51519 Butte Table Mountain 4 to 5 miles north of Oroville, Sierra Nevada 152 Comment
  CHSC28975  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst 1980-3-12 469 B Butte Ca 1.0 mi E of Chico Municipal Airport. 60 Comment
  CHSC3151  Lomatium dasycarpum subsp. tomentosum Dona Kingsford 1966-4-23 Butte Location: 2.3 miles SW of Hooker Oak Tree, Chico. Comment
  UC1532356  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  CHSC1963  Lomatium utriculatum E. Canfield 1904-4-7 Butte Hooker Oak field. 76 Comment
  CHSC3473  Lomatium utriculatum Roger Jaegel 1966-3-14 88 Butte Located one forth mile north east of the Chico airport. Chico. Comment
  JEPS117222  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC48016  Lonicera conjugialis Vernon Oswald; Lowell Ahart 1987-7-1 3058 Butte Scotts John Creek 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1813 Comment
  CHSC48017  Lonicera hispidula Vernon Oswald; M. S. Taylor 1985-5-30 1790 Butte Four Trees Rd. 0.5 mi E of Hwy 70. 536 Comment
  UC1586631  Lonicera hispidula var. vacillans Lowell Ahart 1991-6-22 6664 Butte near Lake Oroville (bottom of the abandoned water ditch, w of Springtown Road) 304 Comment
  CHSC50660  Lonicera interrupta Lowell Ahart 1990-6-16 6510 Butte On the north side of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  SEINET10905410  Lonicera interrupta Mary Susan Taylor 1977-6-25 Taylor 1373 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC3213  Lonicera japonica Susan Carrauthers 1966-5-9 149 Butte Next to foot bridge near Physical and Life Science building, Chico State College. Comment
  SEINET10452685  Lotus grandiflorus var. macranthus Lowell Ahart 1985-5-15 Ahart 4982 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  POM27895  Lotus humistratus C. C. Bruce 1897-05 2037 Butte [No location data on label] Comment
  JEPS117542  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CDA13319  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada; on USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CDA27290  Lotus oblongifolius var. oblongifolius Vernon H. Oswald & Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mile north of Four Trees-Coyote Gap Road. Comment
  JEPS98308  Lotus purshianus var. purshianus Lowell Ahart 2000-6-27 8525 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  RSA281672  Lotus unifoliolatus S. O. Mattoon 1978-9-25 122 Butte Middle Fork on Ponderosa For. Rd. 5 air mi. NW of Magalia. Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 Comment
  UCD65937  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-1 06- 29 -LU Butte Oroville Wildlife Area, immediately east of Feather River, south of Thermolito and Oroville. 9 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
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 51/2 mi (air) W of Oroville 36 Comment
  JEPS119895  Ludwigia palustris Lowell Ahart 2012-6-5 18168 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC61053  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1993-7-29 5739 Butte Chico Landing (site) boat ramp, Bidwell River State Park, along the Sacramento River W of Chico. In slough and leading up to the ramp. 38 Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC25320  Ludwigia peploides subsp. peploides Hayes; Warner, Schlising 1977-8-23 46 Butte Found in canal at Gray Lodge State Wildlife Refuge. 50 Comment
  UC726093  Lupinus A. A. Heller 1928-6-28 14671 Butte Butte Meadows Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  CHSC86544  Lupinus albicaulis var. albicaulis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7860 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.5 km east-southeast of south end of Bidwell Bar bridge. 280 Comment
  CHSC55698  Lupinus albifrons Ben Cunningham 1991-4-20 Butte Ca. .7 mi s of Lunt road and 4 ft e of Highway 70, 65 mi s of Greenville. 457 Comment
  CAS-BOT-BC201363  Lupinus albifrons var. albifrons Carl B. Wolf 1933-5-23 4903 Butte W. slope Sierra Nevada. 4 3/10 mi. No. of San Andreas on road to Mokelumne Hill 365 Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  CHSC57378  Lupinus bicolor Sean Brown 1990-4-17 15 Butte Vic. covered bridge, s bank of Butte Ck., ca. 11.6 km ese of Chico. 120 Comment
  SFV11554  Lupinus bicolor M. L. Vincent 1964-4-8 499 Butte Pentz Road, 0.25 miles west of Barnum Road. Comment
  UC725710  Lupinus bicolor A. A. Heller 1914-3-26 11227 Butte Canon hf Big Chico creek 6 miles E of Chico. 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
  SEINET10940039  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  SEINET10484922  Lupinus bicolor subsp. tridentatus Mcbride 1981-4-18 MCBRIDE 1 Butte Small population, 1.5 km e of chico and 1 km n of little chico creek. Open Area within transitional zone between valley loland and foothills. 90 Comment
  JEPS107276  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  JEPS115377  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 209 Comment
  CHSC40607  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 a Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UCD109577  Lupinus stiversii Joseph M. DiTomaso 1976-5-23 467 Butte Lake Oroville, peninsula on south side. 274 Comment
  POM24039  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-04 2035 Butte [name of locality illegible] Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  RSA325091  Luzula comosa M. S. Taylor, L. Hanson 1981-4-10 3521 Butte E side of logging spur road, ca. 0.5 mile N of its jct. with Concow Road, ca. 6 miles N of Jarbo Gap on Highway 70, ca. 21 air miles N of Oroville. 732 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  JEPS63272  Lycopus americanus W. L. Jepson 1939-8-17 19460 Butte Feather R. bottom at Oroville; Feather R. 45 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  JEPS45973  Lythrum hyssopifolia H. A. Dutton 1921-1 Butte Chico at the Hooker Oak Chico; , Hooker Oak Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  CDA5125  Lythrum salicaria L. Ahart 2000-7-18 8598 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  SEINET10872111  Madia elegans Mary Susan Taylor 1976-5-5 Taylor 1108 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  UCD150343  Madia elegans Harry George 1967-8-30 s.n. Butte Butte Creek and 99E Highway. Comment
  JEPS117316  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  JEPS120500  Madia exigua L. P. Janeway 2012-6-7 10861 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. Comment
  CAS-BOT-BC344310  Madia exigua A. A. Heller 1928-5-27 14561 Butte Along the Neal road, Paradise Comment
  CAS-BOT-BC342970  Madia gracilis John Thomas Howell 1967-6-22 42632 Butte Magalia 701 Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CHSC50101  Malacothrix floccifera Vernon Oswald 1990-4-24 4169 Butte Lime Saddle Recreation Area on th West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  JEPS106172  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CAS-BOT-BC347382  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte On the north side of the Ponderosa Res., about 2 miles north of Forbestown 450 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. 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
  HSC36095  Marsilea vestita George L. Williams 1962-4-12 Butte Oroville Comment
  CHSC56848  Matricaria discoidea R. L. Ondricek-Fallscheer 1983-5-8 169 Butte Driveway in front of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 188 Comment
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC43350  Meconella californica Lowell Ahart 1978-4-19 1656 Butte Near the overlook at Feather Falls, along trail to Feather Falls, about 5 miles north-west of the town of Feather Falls. 548 Comment
  CAS-BOT-BC422643  Meconella californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CDA42874  Medicago lupulina L. Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC950  Medicago lupulina L. Nelson 1935-5-23 Butte Salmon Hole. 152 Comment
  JEPS95986  Medicago lupulina Lowell Ahart 1999-10-28 8315 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
  CHSC101309  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
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  CHSC46156  Medicago polymorpha Lowell Ahart 1975-5-12 769 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  UC1609072  Melica aristata Lowell Ahart 1993-6-26 7022 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge, on e side of dirt road); Mooreville Ridge 1188 Comment
  CAS-BOT-BC269383  Melica californica John Thomas Howell 1955-6-14 30458 Butte Magalia 731 Comment
  CAS-BOT-BC269387  Melica californica John Thomas Howell; Gordon H. True 1967-6-11 42563 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  JEPS105603  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  CHSC82477  Melica harfordii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9739 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC93792  Melica harfordii Lowell Ahart 2006-5-19 12638 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
  RSA712996  Melica torreyana L. Ahart 2006-5-19 12632 Butte 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. On the west side of the dirt road 406 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
  CHSC38519  Melilotus albus Vernon Oswald 1983-6-18 711 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS102576  Melilotus officinalis Lowell Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 miles east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  SEINET10902774  Melissa officinalis Mary Susan Taylor 1979-10-13 Taylor 2252 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
  JEPS115357  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte Along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC94013  Mentha canadensis R. Fischer 2004-6-12 685 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  JEPS95740  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte 12 mi S of Oroville (Peter Ahart Ranch; 2 1/4 mi N and 1/10 mi E of Honcut) 36 Comment
  CHSC86082  Mentha spicata R. D. Fischer 2004-1-4 45 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. In drainage ditch next to Upper Park Road 300 ft. west of Salmon Hole. 243 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  SEINET10480639  Mentzelia laevicaulis Mary Susan Taylor 1975-10-3 Taylor 946 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC3442  Micranthes integrifolia Judy Potter 1966-3-7 Butte Hill east of Honey Run Bridge. Comment
  CHSC4219  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; on slope ca. 25 yds. up slope on S side canyon. Comment
  CHSC87439  Micranthes integrifolia R. D. Fischer 2004-3-31 103 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  CAS-BOT-BC429204  Micranthes oregana F. N. Bassett 1923-6-21 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC11903  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. In swamp. 1550 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC45894  Micropus californicus var. californicus Lowell Ahart 1975-5-12 767 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC348702  Microseris acuminata John Thomas Howell 1976-4-2 51546 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC348882  Microseris douglasii subsp. douglasii A. A. Heller 1914-4-14 11291 Butte 8 miles north of Oroville Comment
  CHSC44273  Microseris nutans V. Oswald; L. Ahart 1988-6-17 3395 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC3263  Microsteris gracilis M. L. Hillier 1966-3-4 Butte Along rd. side about 400 yds. s. of Rock Creek bridge of Cohasset Rd. Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  POM43817  Mimulus bicolor R. M. Austin 1883-05 15 Butte Lomo. Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  UC103699  Mimulus glaucescens R. M. Austin Apr, 1883 213 Butte Little Chico Creek Comment
  UC75182  Mimulus glaucescens Dr. E. B. Copeland 1903-5-15 3177 Butte Chico Comment
  UCD122722  Mimulus glaucescens B. L. Wiley 1975-4-18 15 Butte from junction of Hwys. 70 and 149, 11.8 mi e and 6.1 mi up Cherokee Rd. from junction of Table Mtn. Blvd. and Cherokee Rd. ca. 50 yds. w. 487 Comment
  SEINET12332655  Mimulus glaucescens Unknown 1977-1 17 Butte ca 25 ft N of Wildrose Rd, ca 8 mi N of Manzanita Ave, ca 1 mi N of Chico 70 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  JEPS110327  Mimulus guttatus Lowell Ahart 2006-7-25 13063 Butte In the west part 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
  JEPS126560  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA795601  Mimulus guttatus Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km northeast of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  UC886186  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET12318321  Mimulus guttatus R. T. Retuta 1978-1 5 Butte ca 0.5 mi SE of Cherokee Rd, ca 5 mi of Oroville, North Table Mountain Comment
  UC1609161  Mimulus kelloggii Vernon H. Oswald and Lowell Ahart 1993-3-24 5242 Butte n Pentz historical site (e side of canyon, on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  JEPS32451  Mimulus latidens Peter H. Raven 1963-5-8 18361 Butte 5 mi w Chico (on State Highway 32) Comment
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  SEINET1943061  Mimulus layneae David Thompson 1988-6-8 937 Butte Butte Co., Calif. 0.2 mi E of Zinc Road (S jct) along Bald Rock Road; T21N, R5E, center of N1/2 S36 Common on sand of decomposing granite outcrop 749 Comment
  JEPS107776  Mimulus microphyllus Lowell Ahart 2005-5-2 11781 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS95802  Mimulus pilosus Lowell Ahart 1999-8-13 8133 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD85076  Mimulus torreyi Dena Grossenbacher; Marisano James 2009-6-7 1033 Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  SEINET10962499  Mimulus torreyi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4725 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
  SEINET7072713  Mimulus tricolor A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  CHSC93359  Minuartia californica Lowell Ahart 2006-4-28 12550 Butte About 50 yards north of the rim of Beatson Hollow, about 120 yards south of the poor dirt road, about 1/8 mile southeast of the reservoir, about 2 1/8 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  JEPS110438  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut 49 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CDA3374  Mollugo verticillata L. Ahart 1998-7-1 8029 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC435071  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC60102  Monardella breweri subsp. lanceolata B. Castro; J. Jurewicz 1991-9-16 447 Butte Ca 23 air mi NE of Oroville, ca 4 mi NE of Mtn. House along Oro-Quincy Hwy, on E side of USFS Rd 22N80 ca 0.2 mi NE of its jcn with the Oro-Quincy Hwy. 1203 Comment
  CHSC70800  Monardella breweri subsp. lanceolata B. Castro 1989-8-1 332 Butte Ca 3.5 road mi E of Brush Creek on Milsap Bar Rd. Ca 100 ft S of rd. 853 Comment
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  UC519258  Monardella odoratissima subsp. glauca H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CHSC48490  Monardella odoratissima subsp. pallida Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  CHSC52037  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 279 Butte W edge of Scotts John Rd 1.7 mi n. of its jct with Humbug/ Humboldt Rd, in open flat overlooking Scotts John Ck. 1828 Comment
  UC600443  Monardella odoratissima subsp. pallida E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CDA14090  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13975 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC117009  Monardella sheltonii Lowell Ahart 2016-6-29 21051 A Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  OBI10803  Montia chamissoi H. F. Copeland Jul-33 s.n. Butte Vicinity of Jonesville, Lassen natl forest Comment
  CHSC84468  Montia diffusa Lowell Ahart 2003-7-12 10378 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  CHSC42480  Montia fontana subsp. amporitana Lowell Ahart 1987-5-12 5631 Butte On damp bare broken black lava, in a seep, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC50417  Montia fontana subsp. amporitana Vernon Oswald; Lowell Ahart 1990-6-20 4301 Butte High Lakes Rd ca. 0.5 mi south-southwest of Carr Mine, east of Philbrook Reservoir. Common among Veratrum on a moist meadow just south of the road. 1828 Comment
  CHSC28633  Montia fontana subsp. chondrosperma M. S. Taylor 1979-3-31 1965 Butte In very wet ditch. Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  SEINET10572668  Montia parvifolia Mary Susan Taylor 1981-5-11 Taylor 3692 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC46607  Muhlenbergia andina V. Oswald; L. Ahart 1989-7-21 3885 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  CHSC46691  Muhlenbergia andina V. Oswald; L. Ahart 1989-8-15 3937 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 the edge of a lake n of and visible from the road. 1752 Comment
  CHSC40647  Muhlenbergia filiformis Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  SEINET10508208  Muhlenbergia rigens Mary Susan Taylor 1979-10-13 Taylor 2253 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
  CAS-BOT-BC83264  Myosurus minimus Lowell Ahart 1979-4-6 s.n. Butte 3 miles northwest of Bangor. Along North Honcut Creek. Comment
  HSC66354  Myosurus minimus M. S. Taylor, J. D. Jokerst 1980-3-28 2397 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  CDA882  Najas graminea T. C. Fuller 1977-9-7 20222 Butte In ditch bottom in very slow moving water 0.5 m deep, N road of Hamilton Road Facility, Biggs Rice Exp. Station, 5 km N of Biggs. 0 Comment
  SEINET11763780  Najas graminea H. L. Mason, Grant, V. 1946-1 13047 Butte near caretakers house, Greylodge Game Refuge Comment
  UC600778  Nama lobbii H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC34986  Navarretia divaricata R. A. Schlising; R. Banchero 1981-5-20 4059 Butte E part of county, Lumpkin Ridge. Comment
  POM183171  Navarretia divaricata H. F. Copeland 1930-7-18 1334 Butte Jonesville. 1524 Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  JEPS117330  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-21 17209 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
  CHSC46295  Navarretia divaricata subsp. vividior Vernon Oswald 1989-5-16 3773 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SBBG58255  Navarretia filicaulis E. B. Copeland 1932-6-24 Butte near Hog Springs, ca. 5 mi N of Chico on the Humbolt Rd Comment
  CHSC91108  Navarretia heterandra Lowell Ahart 2005-5-28 11824 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
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS120937  Navarretia intertexta Lowell Ahart 2013-5-23 18705 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC91267  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west side 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. 51 Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  CHSC38592  Navarretia leptalea Vernon Oswald 1982-7-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the Diversion Channel. Along the edge of a pool. 79 Comment
  JEPS107885  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville 36 Comment
  CDA31934  Navarretia pubescens L. Ahart 2009-5-23 15727 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC52110  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 Comment
  UC856892  Navarretia tagetina Lewis S. Rose 1939-6-5 39197 Butte Honcut 30 Comment
  UC1562431  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (about 0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  UC107227  Nemophila menziesii H. E. Brown Mar 3 1897-Mar 23 1897 252 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  POM73813  Nemophila menziesii var. menziesii C. C. Bruce 1897-03 2036 Butte [No location information on label.] Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  CHSC48466  Nemophila spatulata Vernon Oswald 1985-5-2 1747 Butte Dixie Rd. between Concow Rd. and Pulga Rd. at Dogwood Creek. 999 Comment
  SEINET10869750  Nemophila spatulata Mary Susan Taylor 1979-3-31 Taylor 1967 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC75974  Nicotiana acuminata var. multiflora Lowell Ahart; Vernon H. Oswald 1999-8-13 8135 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
  CHSC42103  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC75975  Nicotiana quadrivalvis Lowell Ahart; Vernon H. Oswald 1999-8-13 8136 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
  JEPS95875  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC42230  Odontostomum hartwegii L. A. Hinman 1986-4-21 18 Butte Ca. 7 mi ne of Chico, 4 mi s of Centerville. 237 Comment
  CHSC47037  Oenothera elata subsp. hirsutissima R. A. Schlising 1985-10-6 4480 Butte At Sacramento River, W of Chico, N of Chico Landing site. Along E edge of river. 36 Comment
  CHSC48638  Oenothera elata subsp. hirsutissima Vernon Oswald 1987-6-12 2993 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  JEPS117552  Olea europaea Lowell Ahart 2010-6-20 16817 Butte On the south side 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
  SEINET10470798  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1984-2-18 Ahart 4496 Butte T17N R4E sec 1. Joie Osgood Ranch, ca. 4 miles NE of Honcut. Comment
  UC1609005  Orthilia secunda Lowell Ahart 1993-9-13 7236 Butte near Bolt Creek, about 1 mile south east of Butte Meadows 1325 Comment
  CAS-BOT-BC457669  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  SEINET12328376  Orthocarpus attenuatus M. S. Taylor, Oswald, V. 1984-1 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 air mi NE of Chico Comment
  SEINET12328344  Orthocarpus campestris Unknown 1984-1 4585 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 Comment
  RSA715718  Orthocarpus erianthus L. P. Janeway 2005-3-1 8332 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10549669  Orthocarpus erianthus Mary Susan Taylor 1974-3-26 Taylor 94 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  SEINET10549677  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 59 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET6225234  Orthocarpus erianthus L. S. Rose 1967-1 67054 Butte Oroville Comment
  RSA325140  Orthocarpus lacerus M. S. Taylor, Vernon H. Oswald 1984-4-4 5393 Butte S side of Humbug road, 2 miles SW of Nimshew, 12 air miles NE of Chico. Comment
  SEINET10549699  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-18 Taylor 2533 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  POM15361  Orthocarpus purpurascens E. B. Copeland 1903-4-10 3035 Butte Chico. Comment
  SEINET10549735  Orthocarpus pusillus Mary Susan Taylor 1981-5-6 Taylor 3623 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
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  CHSC89745  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CHSC42458  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 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
  JEPS34386  Packera eurycephala var. lewisrosei Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8862 Butte 0.75 mi s Pulga (above side road off U.S. Hwy 40, in canyon of the N Fk Feather River, at n base of grade over Jarbo Gap, and just before bridge across Feather River); North Fork of Feather River, Jarbo Gap 426 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  LA212209  Packera eurycephala var. lewisrosei James R. Shevock; 1972-5-9 1777 Butte Feather River Canyon, Jarbo Plass. 914 Comment
  CHSC61374  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC26456  Panicum dichotomiflorum L. Ahart 1977-10-15 Butte Along edge of a swale. Peter Ahart Ranch, Honcut. Comment
  SEINET10901935  Panicum dichotomiflorum Lowell Ahart 1990-9-30 Ahart 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC45108  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  CHSC112934  Parentucellia viscosa B. Castro 2012-6-21 1930 Butte Sacramento Valley. CA 3 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road 42 Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  CAS-BOT-BC181183  Paronychia ahartii R. F. Hoover 1938-4-24 3242 Butte 3 mi. n. of Chico Comment
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 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
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 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
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  UC171556  Pedicularis semibarbata Mrs. R. M. Austin July 1896 110 Butte Colby Comment
  CHSC28410  Pellaea andromedifolia Bruce Hamren 1978-4-24 16 Butte Upper Miocene Canal. 448 Comment
  RSA4626  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  SEINET11716737  Pellaea mucronata M. S. Taylor 1980-1 2347 Butte overlooking Hamlin Canyon, ca 0.25 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise 302 Comment
  CHSC86077  Pellaea mucronata var. mucronata R. D. Fischer; Paul Maslin 2003-12-24 20 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located on the west side edge of the hwy, about 100 yds south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). Located near the bottom of the cut bank behind the 'rock barrier' fence. 591 Comment
  UC382578  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1896 221 Butte Iron Canyon Comment
  SEINET12320806  Penstemon azureus M. S. Taylor 1980-1 2776 Butte just E of Coutelence Rd at its jct with Skyway 610 Comment
  UC726756  Penstemon azureus var. angustissimus A. A. Heller 1940-6-5 15701 Butte along the Feather River Highway e of the first [Feather River] crossing; along the Feather River highway e of first crossing Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  SD4638  Penstemon deustus E. B. Copeland 1931-6-11 690 Butte Jonesville, on dry cliffs 1600 Comment
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC44703  Penstemon laetus var. leptosepalus R. Banchero 1980-6-2 177 Butte Along Hwy 32, ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of the jct of Hwy 32 and Forest Ranch Rd. 609 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  UC423490  Penstemon laetus var. leptosepalus David D. Keck 1930-7-25 981 Butte 4 mi w Forbestown (eastern Butte County); Sierra Nevada, w of Forbestown 762 Comment
  UC423640  Penstemon laetus var. leptosepalus David D. Keck 1930-7-24 972 Butte near Chaparral; Sierra Nevada 1645 Comment
  JEPS83778  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  SEINET5329274 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  CHSC3577  Pentagramma triangularis Judy Lee Potter 1966-2-26 Butte On Lucky John Road, Paradise. Comment
  CHSC30083  Pentagramma triangularis subsp. semipallida M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3190 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30302  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-5-27 2680 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC37133  Perideridia bolanderi subsp. involucrata L. Ahart 1982-7-1 3654 Butte Ca. 1 1/4 mi n and 2 1/2 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CHSC102738  Perideridia kelloggii Lowell Ahart 2009-7-9 16028 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  JEPS12431  Perideridia kelloggii W. S. Wilkinson 1921-7-16 Butte Chico Comment
  SEINET10840955  Perideridia kelloggii Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1398 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CDA14087  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13971 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC40241  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1898 Butte Philbrook Rd. ca. 0.1 mi e of Humbug Rd. at the road leading to W. Branch Camp. 1463 Comment
  CHSC74059  Perideridia parishii subsp. latifolia B. Castro 1998-7-28 815 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  RSA459108  Perideridia parishii subsp. latifolia H. F. Copeland 1928-8-29 1064 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  CHSC84030  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte In a ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road, about 1 1/2 miles (air) southwest of Richvale. 28 Comment
  UCD99056  Persicaria capitata H. Clem Meith 1966-9-5 Butte Oroville. Comment
  CHSC37113  Persicaria hydropiper L. Ahart; M. S. Taylor 1982-10-11 3864 Butte Along edges of large duck pond, ca. 0.1 mi w of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC50681  Persicaria hydropiper Lowell Ahart 1990-6-16 6521 Butte Growing on wet mud along McCabe Creek, below the high water line at Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC98412  Persicaria hydropiper L. Ahart 1983-9-17 4437 Butte 1/4 mi se of Stirling City. 1100 Comment
  CAS-BOT-BC413702  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte On the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. Near Ponderosa Dam, Lake Oroville 277 Comment
  CHSC66674  Persicaria hydropiperoides Vernon H. Oswald; Lowell Ahart 1996-7-22 8082 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I. 30 Comment
  JEPS120602  Persicaria lapathifolia Lowell Ahart 2013-11-17 19262 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC66675  Persicaria maculosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8097 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Growing in gravel on the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Santuary II. 33 Comment
  CAS-BOT-BC419318  Persicaria punctata Lowell Ahart 1987-5-27 5716 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC419321  Persicaria punctata A. A. Heller 1914-7-15 11578 Butte Hills 8 miles north of Oroville Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  CHSC3837  Phacelia egena L. E. Dunkel 1965-6-4 18 Butte Scattered along banks of East Br. Mud Creek, ca 600 yards e of entrance gate to Richardson Springs Resort from Cohasset Road. 33 Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  UC1228321  Phacelia imbricata L. R. Heckard 1952-6-20 321 Butte along Feather River hwy just below Las Plumas Rd Comment
  RSA4127  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville, near Butte Creek 1500 Comment
  SD4076  Phacelia procera E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  SEINET10497019  Phacelia procera Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4207 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC113939  Phalaris arundinacea Lowell Ahart 2014-8-13 19699 Butte Bottom of a small drainage, on the southeast side of Humbug Summit Road, about 100 yards southwest of the Way Point, about 200 yards southwest of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2-1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC65996  Phalaris lemmonii Vernon H. Oswald 1996-4-20 7400 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  UCD89175  Phalaris minor A. A. Heller 1926-5-8 13939 Butte Heller grounds near Chico. Comment
  CDA34212  Phalaris paradoxa L. Ahart 2010-6-12 16808 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  UCD89390  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson. Comment
  CAS-BOT-BC77372  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles northwest of Forbestown 370 Comment
  CHSC27975  Phlox diffusa M. S. Taylor 1978-7-18 1713 Butte On e side of Humbolt Peak, at Humbolt Summit. 2133 Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  CHSC115491  Phlox speciosa subsp. occidentalis L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  RSA3434  Phlox speciosa subsp. occidentalis Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  CAS-BOT-BC134921  Phoradendron bolleanum Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  CHSC77448  Phoradendron densum Laura Bogni 1997-3-25 3 Butte Magalia grove; west side of Coutelenc Rd; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC49438  Physalis acutifolia Vernon Oswald 1983-10-10 1066 Butte Near Chico on Bell Rd. ca. 1/2 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  CHSC83053  Physalis lancifolia Lowell Ahart 2002-10-17 9996 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC34220  Physocarpus capitatus M. S. Taylor 1981-5-27 3805 Butte Along creek on Phillips property, 685 Wagstaff, Paradise. 579 Comment
  RSA702777  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico. 58 Comment
  SEINET10537237  Phytolacca americana Lowell Ahart, Vernon H. Oswald 1985-7-24 Ahart 5159 Butte Along a small stream, along La Porte Road, about 4 miles north-east of Bangor. Comment
  CHSC45290  Pickeringia montana var. montana Vernon Oswald 1985-5-20 1768 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC38240  Pilularia americana Vernon Oswald 1983-5-14 478 Butte Upper Bidwell Park, Chico, 80 ft n of Upper Park Rd. and 50 ft w of the road to the North Rim Trail. 92 Comment
  JEPS104187  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile ca 25 yd n of Humboldt Peak, ca 1/2 mi e of Humboldt Summit, ca 8 mi (air) ne of Butte Meadows. 2154 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  NY61961  Pinus monticola A. A. Heller 1915-6-26 12033 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC27190  Pinus mugo P. Moyer 1971-10-24 45 Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 Comment
  CAS-BOT-BC254403  Piptatherum miliaceum John Thomas Howell 1961-9-22 36763 Butte N Fork of Feather River, 10 miles from Oroville 121 Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10966200  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-5-27 Taylor 2680 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  JEPS107766  Plagiobothrys austiniae Lowell Ahart 2005-5-11 11809 Butte Margins of vernal pools, about 300 yards southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 359 Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  UC725374  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte near Chico airpost 91 Comment
  UC196292  Plagiobothrys bracteatus A. A. Heller 1914-4-17 11308 Butte in vernal pool in field 8 mi n Oroville Comment
  CHSC31580  Plagiobothrys canescens L. Ahart 1978-3-29 1621 Butte Peter Ahart Ranch, Honcut. In farmed field near a vernal pool near the old barn. 50 Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  CHSC93349  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  UC480658  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte Willow Creek Jonesville, Willow Creek 1828 Comment
  CHSC46251  Plagiobothrys leptocladus Vernon Oswald 1989-4-20 3749 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), on the ranch road ca. 0.3 mi n of the main gate at Gridley-Colusa Hwy. 18 Comment
  CHSC29034  Plagiobothrys nothofulvus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 547 Butte Top of North Table Mt, 200 m N of Cherokee Rd where it intersects the E end of the Mt. Comment
  SEINET10497555  Plagiobothrys nothofulvus Lowell Ahart 1985-5-10 Ahart 4955 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC29017  Plagiobothrys scriptus M. S. Taylor; J. D. Jokerst 1980-3-28 2405 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  CHSC103723  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16652 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  CHSC60967  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1993-5-17 6946 Butte Vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  HSC97115  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-5-11 11807 Butte About 1 mi. S of Beatson Hollow, about 1 1/2 mi. SW the poor dirt road off of Cherokee Rd., S part of N Table Mtn., about 7 mi. N of Oroville 281 Comment
  UC66153  Plagiobothrys tenellus A. A. Heller and H. E. Brown 1902-5-9 5509 Butte near Clear Creek; Berry Canyon Comment
  CAS-BOT-BC60822  Planodes virginica Lowell Ahart 1985-4-1 4871 Butte Along Wyandotte Creek and Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC31781  Plantago coronopus L. Ahart 1971-4-21 74 Butte Peter Ahart Ranch, Honcut. Along roads. 45 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
  JEPS119595  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. Comment
  SEINET3449643  Plantago erecta Unknown 2003-4-10 10061 Butte Oroville, Oroville, about 2.5 air miles north, about 150 yards west of the east rim of South Table Mountain 320 Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD138966  Platanthera dilatata var. leucostachys Kenneth D. Stewart 1965-7-7 s.n. Butte around 25 miles northeast of Chico on State Highway 32. Comment
  CHSC68911  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte 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
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  CHSC3016  Platycladus orientalis Carl Pejsa 1958-4-19 115 Butte Bidwell Park Forestry Station. Comment
  CHSC113297  Poa annua Lowell Ahart 2014-4-9 19324 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC30382  Poa annua J. D. Jokerst 1979-3-20 1145 Butte At the edges of creeks and vernal pools. Top of North Table Mt., ca 0.5 mi N of the jct of the E edge of mt and Cherokee Rd. 396 Comment
  CHSC59054  Poa annua Lowell Ahart 1992-7-21 6823 Butte Along Coon Hollow Creek, east of the logging road, about 2 1/2 miles (air) north-east of Philbrook Reservoir. 1706 Comment
  JEPS95987  Poa annua Lowell Ahart 1999-10-28 8311 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
  CHSC40294  Poa bolanderi Lowell Ahart 1985-7-16 5147 Butte Near Willow Creek, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC255786  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico in the Sacramento Valley Comment
  CHSC38846  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-9 463 Butte Upper Bidwell Park, Chico, along the Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  CHSC28857  Poa secunda subsp. secunda J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 459 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC21271  Pogogyne douglasii M. S. Taylor 1975-4-29 538 Butte Ca. 100 yds s of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. Comment
  SEINET10498986  Pogogyne douglasii Mary Susan Taylor 1975-4-29 Taylor 538 A Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  CHSC62348  Polycarpon tetraphyllum B. Castro 1990-5-6 426 Butte In residential area at south end of Chico. 60 Comment
  UCSB64008  Polycarpon tetraphyllum Ahart, Lowell 1976-6-27 Butte Along North Honcut Creek; about 3/4 mile north and 2 1/2 miles east of Honcut; about 12 miles south of Oroville 36 Comment
  SEINET11263758  Polygala cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi se of Paradise on Pentz Road.; 0 427 Comment
  SEINET12205532  Polygala cornuta Unknown 1985-1 5081 Butte About 2-1/2 mi NE of Forbestown 564 Comment
  CAS-BOT-BC6543  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  JEPS113172  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along 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. Comment
  JEPS115106  Polygonum arenastrum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC109136  Polygonum bidwelliae Lowell Ahart 1979-5-29 s.n. Butte 2.5 mile southeast of Paradise. Near Kunkle Creek. 500 Comment
  CHSC102850  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 411 Comment
  JEPS50603  Polygonum bidwelliae C. C. Parry 1887-1 Butte Chico Comment
  CHSC69662  Polygonum bolanderi Vernon Oswald; Lowell Ahart 1997-9-9 8861 Butte Humboldt Rd. between Lomo and Butte Mdws., ca. 2.0 mi northeast of Lomo, near the 4833 ft. benchmark. 1473 Comment
  CAS-BOT-BC414367  Polygonum californicum Lowell Ahart 1974-10-18 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 Comment
  JEPS117421  Polygonum douglasii subsp. douglasii Lowell Ahart 2010-9-28 17250 Butte On damp soil, about 10 yards west of Big Kimshew Creek, under trees, 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
  CHSC105178  Polygonum douglasii subsp. spergulariiforme B. Castro; L. P. Janeway 1999-8-1 1020 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  UC600419  Polygonum lapathifolium E. B. Copeland 1931-8-1 Butte Jonesville 1800 Comment
  RSA518701  Polygonum lapathifolium L. Ahart 1990-10-3 6613 Butte Willowweed, N side of the E Fork of Canyon Creek, below the high water line of Lake Oroville, 1/8 mile NE of the Canyon Creek Bridge across Lake Oroville. Comment
  CAS-BOT-BC414714  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  CAS-BOT-BC419810  Polygonum parryi Lowell Ahart 1982-6-15 3571 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 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
  JEPS88546  Polygonum persicaria Vernon H. Oswald and Lowell Ahart 1996-7-22 8097 Butte U.S. Fish and Wildlife Service Parcel between 7-Mile Lane and Sacramento River (edge of public access parking lot on 7-Mile Lane, adjacent to se corner of Tract 2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  UC392225  Polygonum phytolaccifolium E. B. Copeland July 1929 Butte Jonesville; along creek and near springs Comment
  CHSC39130  Polygonum polygaloides subsp. kelloggii Robert Schlising; R. Banchero 1980-6-2 3628 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC204575  Polygonum punctatum A. A. Heller 1914-7-16 11578 Butte hills 8 mi n Oroville Comment
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 Comment
  SD1351  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  CDA42733  Polypodium calirhiza L. Ahart 2005-1-2 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam Comment
  JEPS120176  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  UCD80677  Polypodium calirhiza CNPS SN Foothill Team 2005-3-30 SNFN 0070 c Butte CDFG North Table Mountain Wildlife Area. This site is in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CDA14059  Polypodium glycyrrhiza G. F. Hrusa, T. D. Wilfred 1997-5-1 13706 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC102157  Polypogon interruptus Lowell Ahart 2009-5-30 15786 Butte On wet soil, along a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC84163  Polypogon interruptus Lowell Ahart 2003-6-30 10322 Butte Along the 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
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC116277  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte On the south side of Forbestown Resevoir, about 400 yards southeast of the Forbestown Resevoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  JEPS124288  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UC600571  Polystichum imbricans subsp. imbricans E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  CHSC28001  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte On se corner of Lake Madrone, at jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  CHSC61216  Populus alba Lowell Ahart 1993-4-5 6926 Butte On the east side of upper Palermo Road, about 2 miles north-east of Palermo. 121 Comment
  CHSC28613  Portulaca oleracea R. A. Schlising 1979-10-23 3491 -1 Butte SW of Chico and E of Orbend, at west margin of Butte County, at Sacramento River and Ord Ferry Road. Comment
  SD65  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville, in cold springs 1650 Comment
  UCD138221  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink 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
  LA208088  Potentilla gracilis E. B. Copeland; 1929-7-24 sn Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  SEINET10483224  Potentilla gracilis subsp. nuttallii Mary Susan Taylor 1978-6-24 Taylor 1666 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC481580  Potentilla norvegica H. F. Copeland 1928-8-22 1066 Butte Jonesville 1524 Comment
  JEPS47186  Potentilla rivalis W. L. Jepson 1939-8-17 19455 Butte near Oroville; Feather River, near Oroville 45 Comment
  CHSC50562  Poteridium annuum Vernon Oswald; Lowell Ahart 1990-7-5 4347 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  CDA27702  Prosopis glandulosa var. torreyana L. Ahart, M. G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  CHSC28927  Prunella vulgaris var. lanceolata M. S. Taylor 1978-7-21 1819 Butte On s side of Oroville-Quincy Hwy along creek, in a meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC52063  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 148 Butte 0.95 mi into Coon Hollow below Campground, by edge of Coon Creek and on edge of adjacent meadow. 1664 Comment
  JEPS121993  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM219500  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville 1524 Comment
  CHSC28728  Prunus subcordata R. A. Schlising 1979-4-13 3360 Butte Cohasset Ridge, about 14 miles NE of Chico. Just off Cohasset Highway. 548 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CAS-BOT-BC357001  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  CHSC45895  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1978-5-1 1684 Butte On the bottom of a vernal pool, in a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD135289  Psilocarphus oregonus L. Ahart 1978-5-12 1715 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides 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
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  CHSC28822  Psilocarphus tenellus var. tenellus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 414 Butte Top of north Table Mt, ca 1.0 mi nw of Cherokee Rd. Roadsides and vernal pools. 381 Comment
  RSA0036431  Ptelea crenulata Lowell A. Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 356 Comment
  CHSC12130  Pteridium aquilinum var. pubescens J. M. Pitts 1972-4-16 122 Butte 6.1 mi ne past Honeyrun Bridge on Humbug Rd. 335 Comment
  CHSC97336  Pycnanthemum californicum L. P. Janeway 2007-8-6 9152 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. Large patch of this on slope next to east side of pond. 776 Comment
  SBBG28969  Pyrola asarifolia E. B. Copeland 1931-7-1 Butte Jonesville 1500 Comment
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  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
  CHSC110114  Pyrus calleryana L. P. Janeway 2012-3-6 10791 Butte Sacramento Valley. Southern edge of Chico; fenceline along west side of Hwy 99 just south of Estates Drive. 65 Comment
  UC1135490  Quercus berberidifolia J. E. Sowder 1933-6-14 113 Butte .12 mi n 13 Mile House; Chico Quad. 609 Comment
  CHSC621  Quercus cerris V. Holt 1963-9-5 Butte N.W. corner of Bidwell mansion grounds. Comment
  JEPS115840  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC109601  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18120 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking area, Lower Bidwell Park Chico. 76 Comment
  CHSC31379  Quercus douglasii J. D. Jokerst 1979-4-6 1188 Butte S edge of the S branch of Coal Cr. Canyon. On top of North Table Mountain. 365 Comment
  CAS-BOT-BC86103  Quercus dumosa John Thomas Howell 1955-6-15 30497 A Butte 6 miles from paradise on road to Pentz 426 Comment
  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
  CAS-BOT-BC62796  Quercus garryana var. breweri John Thomas Howell 1962-6-15 37439 Butte Magalia 731 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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  UCD47409  Quercus vacciniifolia J. I. Mallory 1970-8-20 380 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  UC600477  Ranunculus alismifolius var. alismellus E. B. Copeland 1931-6-11 Butte Kirby's Meadow Jonesville 1800 Comment
  JEPS123888  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  CHSC62832  Ranunculus canus Ella Icard 1893-4-1 Butte Comment
  JEPS104176  Ranunculus canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA739981  Ranunculus canus Carol W. Witham, Jennifer Buck 2001-4-10 2001 -38 Butte One mile eaast of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC45403  Ranunculus hebecarpus Lowell Ahart 1974-4-11 386 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC53703  Ranunculus hebecarpus Kirsten Tarp 1983-4-9 266 Butte N of Butte College. 91 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  CAS-BOT-BC74264  Raphanus sativus A. A. Heller 1923-10-13 13828 a Butte Along the highway near Richvale. Comment
  SEINET10903216  Rhamnus Mary Susan Taylor 1981-5-15 Taylor 3753 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC82391  Rhamnus californica subsp. californica Lowell Ahart 2002-6-2 9679 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  RSA754884  Rhamnus ilicifolia L. Ahart 2009-6-30 15963 Butte S of a small drainage, along Guardian Rock Trail, about 5/8 air miles SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 386 Comment
  SEINET13946369 Image available Rhamnus rubra A. A. Heller 1914-1 11404 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  UC1121755  Rhamnus tomentella subsp. tomentella C. G. Albertus 1933-5-26 1 Butte 0.75 mi nw Yankee Hills; Chico Quad. 518 Comment
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  CHSC13517  Rhododendron occidentale A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  UC175522  Rhododendron occidentale A. A. Heller 1913-6-7 10800 Butte near Stirling 1074 Comment
  CHSC78320  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC22688  Ribes amarum R. A. Schlising 1963-5-4 2563 Butte South of Cohasset, 5.2 miles north of Jct. Cohasset Hwy and Kiefer Road, along Cohasset Hwy. Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  SEINET177607 Image available Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CAS-BOT-BC169095  Ribes inerme var. inerme A. A. Heller 1915-6-11 12044 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 Comment
  CAS-BOT-BC212667  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CAS-BOT-BC362956  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  UC1950039  Robinia pseudoacacia Lowell Ahart 2009-4-26 15609 Butte About 10 miles northeast of Chico, Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road 461 Comment
  CDA30179  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Sierra Nevada foothills; Chico; adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. Plants growing at southern end of reserve along Chico Canyon Road, on the roadbed and the eastern edge. Population 1 to 1.25 miles north of Bidwell Park boundary. Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  RSA768992  Rorippa palustris subsp. occidentalis L. Ahart 2010-4-7 16575 Butte Sides of a deep ditch on south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Riceton Highway, about 1.25 miles northwest of Biggs. 32 Comment
  CHSC35643  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 227 Butte On n bank of Western Canal; at its jct with Aguas Frias Rd, ca. 12 mi s of Chico. 32 Comment
  CHSC65584  Rosa bridgesii L. P. Janeway 1995-6-1 4766 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  JEPS108139  Rosa bridgesii L. P. Janeway 2005-5-29 8402 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing 1006 Comment
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC102167  Rosa californica Lowell Ahart 2009-6-19 15942 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  CDA3959  Rosa eglanteria L. Ahart 2002-6-2 9677 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  RSA0112567  Rotala ramosior Lowell A. Ahart 2013-9-20 19059 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
  CAS-BOT-BC147105  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CDA31973  Rubus laciniatus L. Ahart 2009-7-9 16013 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  SEINET10483578  Rubus laciniatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC148369  Rubus leucodermis John Thomas Howell 1962-6-15 37454 Butte Magalia - Sierra Nevada 731 Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CDA42870  Rubus ursinus L. Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC46864  Rudbeckia hirta var. pulcherrima Vernon Oswald 1989-8-29 3972 Butte North side of Butte Creek downstream from the bridge on Humboldt Rd just s of Cherry Hill, ca. 2 mi (air) wsw of Jonesville. Meadow bordering the creek. 1414 Comment
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  POM280479  Rumex acetosella Lyman Benson 1929-06 s.n. Butte Graville. Comment
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  UC726091  Rumex salicifolius var. triangulivalvis A. A. Heller 1928-7-25 14702 Butte Butte Creek House Jonesville Comment
  SD122531  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown 145 Comment
  CAS-BOT-BC123629  Rupertia hallii Harvey Monroe Hall 1914-7-31 9825 Butte Humboldt Road 1066 Comment
  CHSC35029  Sagina apetala R. A. Schlising 1981-4-6 4017 Butte SW of Oroville along Hwy 70, 0.8 mi N of jct with Cox Lane. Comment
  CHSC90917  Sagina apetala Lowell Ahart 2005-4-18 11744 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
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 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
  CHSC66682  Sagittaria longiloba Vernon H. Oswald; Lowell Ahart 1996-7-22 8087 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a roadside ditch S of Refuge Headquarters on the E side of Tract 7.3, Sanctuary I. 32 Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10538833  Salix exigua Mary Susan Taylor 1975-4-26 Taylor 525 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
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  RSA0045623  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-17 17884 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC37778  Salix gooddingii M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC38666  Salix gooddingii Vernon Oswald 1983-5-4 432 Butte Upper Bidwell Park, Chico, along the top of the s dike of Horseshoe Lake. 100 Comment
  SBBG128179  Salix gooddingii L. Ahart 2012-4-20 17893 Butte E side of the dam, E side of S Rim Trail, ca. 50 yards SW of the table at the old homestead, ca. 100 yards S of the intsection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 m NE of Chico 259 Comment
  CAS-BOT-BC104077  Salix hindsiana Peter H. Raven 1953-5-9 5450 Butte 6.5 miles from Bangor on road to Oroville Comment
  CAS-BOT-BC106982  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville 487 Comment
  CHSC110314  Salix lasiolepis B. Castro 2006-8-10 1598 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 2.5 mi NE of Richvale, and 0.3 mi S of the Western cnal siphon in Cherokee Canal. On W side of canal abt 30 ft N of dirt road crossing the canal. 35 Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth Comment
  CAS-BOT-BC129584  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  CAS-BOT-BC125061  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  UC446424  Salix ligulifolia E. B. Copeland 1931-6-20 Butte beside Butte Creek Jonesville; , Butte Creek 1500 Comment
  UC446428  Salix ligulifolia E. B. Copeland 1931-6-18 Butte highest Willow Creek meadow Jonesville; , Willow Creek 1550 Comment
  SBBG29048  Salix melanopsis E. B. Copeland 1931-6-10 Butte Butte Crk, Jonesville 1500 Comment
  UC446425  Salix melanopsis E. B. Copeland 1931-6-30 Butte Jonesville beside Butte Creek 1500 Comment
  UC446420  Salix scouleriana E. B. Copeland 1931-6-10 Butte in pockets on ridge Jonesville 1600 Comment
  JEPS120012  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CAS-BOT-BC221109  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte Near Cohasset Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  CHSC81480  Sambucus mexicana Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe lake in Upper Bidwell Park 500 yards away from Big Chico Creek. 91 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  JEPS98470  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC2821  Sanicula bipinnata David Prall 1965-3-14 6 Butte Ca. 10 yds. from edge of cliff ca. 30 yds. from Neal Rd., 1 mile east of HW 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
  UC875472  Sanicula crassicaulis A. A. Heller 1915-5-25 11896 Butte Ridge above Enterprise (in the Sierra Nevada); Sierra Nevada 609 Comment
  CHSC50312  Sanicula graveolens Vernon Oswald; Lowell Ahart 1990-5-29 4260 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1325 Comment
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UC478491  Sanicula graveolens E. B. Copeland 1931-6-22 Butte W of Jones Creek; Jonesville 2100 Comment
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  CHSC27974  Sarcodes sanguinea M. S. Taylor 1978-7-19 1756 Butte On W side of Upper Scotts John Road, ca 2 mi N of its junction with Scotts John Road, ca 4 mi E of Jonesville. 1889 Comment
  SEINET3238873 Image available Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  CAS-BOT-BC436863  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC70840  Saxifraga californica Vernon Oswald 1998-3-16 8890 Butte North end of Upper Bidwell Park along lower Jeep Trail paralleling the east side Big Chico Creek north of the old homestead. 243 Comment
  POM219177  Saxifraga californica H. F. Copeland 1928-4-3 328 Butte Canyon of Butte Creek. Comment
  CHSC4182  Scandix pecten-veneris Kathy Sommarstrom 1967-4-15 30 Butte Found to the right side of Honey Run Rd in front of new bridge next to covered bridge. 76 Comment
  RSA0101644  Sceptridium multifidum Harvey Monroe Hall 1914-7-30 9805 Butte Jonesville. 1524 Comment
  CHSC34162  Schoenoplectus acutus var. occidentalis L. Ahart 1981-8-31 3061 Butte Drying bottom of Wyandotte Lake, ca. 8 mi e of Oroville. 137 Comment
  RSA127022  Schoenoplectus acutus var. occidentalis H. S. Yates 1936-8-14 6122 Butte 10 miles S. of Durham 30 Comment
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  UCD49964  Schoenoplectus mucronatus S. Galen Smith; Malcolm A. Nobs 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland, Butte County. Comment
  UCD49965  Schoenoplectus mucronatus Bellue 1947-9-11 s.n. Butte Afton Road, near Biggs. Comment
  UC1564754  Schoenoplectus subterminalis V. Oswald and L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd 1.4 mi w of its junction with Coon Hollow Rd ca 1.2 mi (air) n Philbrook Reservoir; n of Philbrook Reservoir 1752 Comment
  CAS-BOT-BC111832  Schoenoplectus tabernaemontani John Thomas Howell 1961-9-22 36724 Butte Bank of Feather River, Oroville. 53 Comment
  NY43590  Scirpus acutus S. Bianco 1995-10-28 1047 Butte Near Crain Park, along E margin of Concow Lake 610 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
  CHSC56800  Scirpus congdonii L. P. Janeway 1986-9-1 1831 Butte Near wet meadow and willows at east end of Philbrook Reservoir. 1691 Comment
  CDA39135  Scirpus diffusus T. C. Fuller 1962-7-12 9202 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET7546616  Scirpus diffusus E. B. Copeland 1929-1 343 Butte Jonesville 472 Comment
  CHSC57210  Scirpus microcarpus L. P. Janeway; R. A. Schlising 1988-7-16 3002 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  CDA39142  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. Comment
  SEINET3915176  Scirpus mucronatus M. K. Bellus 1947-8-28 s.n. Butte Afton Road, northwest of Biggs.; 0 Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC39618  Scleranthus annuus subsp. annuus Lowell Ahart 1983-4-1 3915 Butte Found 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
  CHSC82426  Scleranthus annuus subsp. annuus Lowell Ahart 2002-5-7 9618 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC239963  Scribneria bolanderi Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC40295  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte In the road gutter, 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. 320 Comment
  SFV3445  Scrophularia californica subsp. floribunda M. L. Vincent 1962-4-17 199 Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CAS-BOT-BC425114  Scutellaria austiniae Mrs. C. C. Bruce 1897-5-1 1835 Butte Big Chico Comment
  UC1094741  Scutellaria californica Francia Chisaki 1956-6-1 907 Butte 22 mi s of Butte-Plumas County line (on Hwy alt. #40) Comment
  RSA3813  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek, east of Chico. Comment
  CHSC52203  Scutellaria tuberosa L. P. Janeway 1988-5-19 2669 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 Comment
  CHSC65572  Scutellaria tuberosa R. Banchero 1980-4-19 117 Butte Ca 1.5 air mi N of town of Feather Falls, ca 0.7 mi NE of Feather Falls (the falls), at the head of the trail on back side of Falls. 1036 Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  SEINET10593744  Secale cereale K. Henegar 1969-5-15 Henegar 65 Butte On n bank of Sandy Gulch, 1/4 m above Longfellow Bridge.Habitat: Dry, rocky, soil. Comment
  HSC40295  Sedella congdonii J. P. Smith, J. O. Sawyer 1973-4-14 6043 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC415025  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Along the Chico-Oroville road on the lava plains 6 miles from Chico Comment
  CHSC24945  Sedum spathulifolium M. L. McCrum 1976-4-27 20 Butte Pop. ca. 6.5 mi e of Chico, .1 mi w of Covered Bridge, along creek. 112 Comment
  CHSC31078  Sedum spathulifolium Herb Allen McLane 1980-4-25 9 Butte 10 ft s of Ponderosa Way, Plumas National Forest. 487 Comment
  CHSC3520  Sedum spathulifolium John Francis 1966-4-16 116 Butte S. of covered bridge (Honey Run). Comment
  CHSC32648  Selaginella hansenii M. S. Taylor 1981-3-18 3419 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC65798  Selaginella hansenii L. P. Janeway 1994-10-23 4759 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  SEINET10530437  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2330 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  HSC78629  Selaginella wallacei L. P. Janeway 1984-10-8 1180 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  CHSC87779  Senecio aronicoides Paul Maslin 2004-5-6 31 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  SEINET10904906  Senecio eurycephalus var. lewisrosei Mary Susan Taylor 1978-5-6 Taylor 1582 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 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
  JEPS119593  Senecio sylvaticus Lowell Ahart 2012-4-9 17843 Butte About 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS121982  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  JEPS116118  Senecio vulgaris Lowell Ahart, John Dittes 2009-3-20 15502 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
  JEPS119600  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CAS-BOT-BC364730  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CHSC117417  Setaria parviflora B. Castro 2008-7-15 1758 Butte Sacramento Vallye. 2 mi W of Hwy 99 and 1 mi SE of Richvale, at NE corner of Cherokee Canal and Richvale Hwy. At levee toe just up from rice field. 32 Comment
  CHSC38856  Setaria parviflora Vernon Oswald 1983-7-13 863 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Along the edge of the parking lot. 85 Comment
  RSA724863  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  UCD92723  Setaria pumila G. F. Hrusa; T. D. Wilfred 1996-9-6 13573 Butte on E side of Butte Creek, approx. 1/2 mile NE of confluence with Howard Slough and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  CHSC31626  Setaria sphacelata L. Ahart 1977-9-8 1568 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC66102  Setaria sphacelata Vernon H. Oswald 1996-5-23 7630 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 7.2. Sanctuary I. 33 Comment
  CHSC29016  Sherardia arvensis M. S. Taylor; J. D. Jokerst 1980-4-4 2462 Butte On W side of La Porte Rd, ca. 2 mi N of Bangor. 335 Comment
  SEINET10500673  Sherardia arvensis Mary Susan Taylor 1981-5-1 Taylor 3585 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  SEINET12320791  Sherardia arvensis K. D. Marsh 1974-1 8 Butte Table Mountain, ca 6 mi E of Oroville 373 Comment
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  SEINET5629718 Image available Sidalcea asprella A. A. Heller, H. E. Brown. 1902-1 5496 Butte Berry Canyon Comment
  CHSC21070  Sidalcea calycosa M. S. Taylor 1975-10-4 956 Butte On s side of creek entering ne corner of Kinkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC3525  Sidalcea calycosa John Francis 1966-4-23 134 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  UCD116584  Sidalcea calycosa Arthur W. Dawson 1982-4-18 12 Butte 50 m south of Highway 32, 2.5 km east of U.S. 99. 75 Comment
  JEPS119893  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC107239  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC34954  Sidalcea gigantea R. Schlising; R. Banchero 1980-7-31 3940 Butte Ca 4.8 mi S of Inskip, at water supply pond for Stirling City. 1133 Comment
  CHSC37438  Sidalcea gigantea R. A. Schlising 1982-8-26 4374 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. 865 Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  CHSC34957  Sidalcea glaucescens R. Schlising; R. Banchero 1980-8-1 3960 Butte E of Philbrook Lake, 4.3 mi E of Skyway. Comment
  SEINET10480003  Sidalcea hartwegii Mary Susan Taylor 1978-5-7 Taylor 1615 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 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
  CHSC88953  Sidalcea hirsuta Christine Hantelman 2000-4-27 81 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  SEINET10937544  Sidalcea malviflora subsp. celata Mary Susan Taylor 1978-7-21 Taylor 1834 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  UCR133588  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 1318 Butte Jonesville 1524 Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CAS-BOT-BC384539  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock 944 Comment
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  CAS-BOT-BC385886  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  CHSC31020  Silene laciniata subsp. californica M. S. Taylor 1980-10-6 3353 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
  CAS-BOT-BC389009  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  UCSB63726  Silene laciniata subsp. californica 1986-4-19 Butte 11.5 m. N of Chico Municipal Airport on Cohasset Hwy. 853 Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  CAS-BOT-BC389290  Silene lemmonii Lowell Ahart 1983-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls 600 Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CHSC19525  Silybum marianum J. H. Sneed 1972-3-5 8 Butte Found along side Chico-Butte City Hwy. s of Chico. 3.5 mi on right side of road. 59 Comment
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  RSA795776  Sisymbrium officinale L. Ahart 2012-4-30 17933 Butte On the sides of the Bloody Pin Trail, about 100 yards west of Guardian Trail, about 0.5 miles west of Highway 32, about 7.5 miles northeast of Chico, south park of Upper Bidwell Park. 318 Comment
  UC143528  Sisyrinchium bellum Mrs. R. M. Austin July, 1896 34 Butte Colby Comment
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  SEINET10507628  Sitanion hystrix Lowell Ahart 1985-6-30 Ahart 5091 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC116027  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC97757  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  JEPS95877  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
  UCR88751  Solanum americanum J. T. Howell 1959-9-26 35083 Butte Arch Rock, N Fork Feather River 457 Comment
  CDA5908  Solanum carolinense Agricultural Commissioner 1959-7-13 Butte Western Pacific Railroad, Oroville. 0 Comment
  CHSC2519  Solanum parishii W. Fitzwater 1958-4-12 Butte Humboldt Rd., Chico area. 426 Comment
  SEINET10475257  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-7-6 Taylor 3072 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA7727  Spergula arvensis subsp. arvensis L. Ahart 2006-4-23 12533 Butte On the west side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC98980  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC106882  Spergularia bocconi Lowell Ahart 2011-5-1 17339 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  RSA0097897  Spergularia bocconi L. Ahart 2005-5-28 11827 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  RSA0097920  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards SE of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC42488  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA0116393  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC11873  Sphenosciadium capitellatum E. B. Copeland 1930-8-30 430 Butte Jonesville 1500 Comment
  CHSC6651  Spiraea M. MacArthur 1968-6-16 346 Butte In SE yard of Building T, Chico State College campus. 60 Comment
  UC478509  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit 2100 Comment
  CHSC27261  Spiraea prunifolia P. Moyer 1972-3-11 125 Butte CSUC Campus. Foot of Citrus Ave. Bridge, n side of Chico Ck. 60 Comment
  SEINET10470128  Spiranthes porrifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4045 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CDA13320  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada; approx. 0.4 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  CHSC85751  Stachys ajugoides var. ajugoides G. F. Hrusa; T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada--Plumas National Forest. Approx. 0.4 m. E of bridge over Marble Creek on USFS N60. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC44929  Stachys ajugoides var. rigida Lowell Ahart 1988-7-31 6153 Butte Around stream rounded boulders, 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
  JEPS115720  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  CAS-BOT-BC374773  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  CHSC45266  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow. On the bed of the creek. 1889 Comment
  CHSC52015  Stellaria longipes var. longipes L. P. Janeway 1988-6-25 2865 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from The Skyway. 1554 Comment
  CHSC101093  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC55190  Stephanomeria elata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  CAS-BOT-BC375584  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville 1550 Comment
  UC1609323  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam 1158 Comment
  CAS-BOT-BC375765  Stephanomeria virgata John Thomas Howell 1961-9-22 36741 Butte Bottom of Feather River, Oroville 53 Comment
  CHSC51360  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1990-9-4 4445 Butte Feather Falls Trail on the approach to the overlook. 609 Comment
  SEINET10508386  Stipa californica Mary Susan Taylor 1979-7-21 Taylor 2164 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC109681  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC113950  Stipa nelsonii var. dorei Lowell Ahart 2014-7-10 19606 Butte On the east side of the Skyway, about 2 miles north of Stirling City. 1249 Comment
  HSC43088  Streptanthus diversifolius Maralyn O'Meara 1974-4-20 291 Butte Table Mtn. 305 Comment
  JEPS98478  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte 3 mi SE of Paradise (below high water line of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 271 Comment
  CHSC44032  Streptanthus longisiliquus L. P. Janeway 1988-6-14 2791 Butte Northwest side of cyn of Cedar Cr, 4.1 mi E of Lomo along the 'Cedar Loop.' S-facing cutbank of the dirt rd. 1280 Comment
  NY888395  Streptanthus longisiliquus G. Clifton 1997-6-13 35529 Butte Ca. 0.8 km. North of Robley Point 939 Comment
  CAS-BOT-BC87433  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  CAS-BOT-BC87438  Streptanthus polygaloides Lowell Ahart 1985-5-15 4975 Butte West of Lunt Road, about 0.5 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CAS-BOT-BC87439  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Powerhouse Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 365 Comment
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Sep 7 2020
  CHSC33178  Streptanthus polygaloides R. E. Preston 1981-6-1 75 Butte Ca. 2 km sse of Forks of Butte. 780 Comment
  CHSC91266  Streptanthus polygaloides L. P. Janeway 2005-5-29 8414 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  SEINET10448514  Streptanthus polygaloides Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4178 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  UCD116303  Streptanthus tortuosus Robert E. Preston 1984-6-19 463 Butte 1.6 km north of Merrimac site, west side of Oro-Quincy Highway. 1372 Comment
  SEINET10448527  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2714 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC81238  Streptanthus tortuosus var. suffrutescens J. Trizzino 2001-5-2 67 Butte North Table Mountain. 384 Comment
  RSA32715  Streptanthus tortuosus var. suffrutescens A. A. Heller 1938-4-14 15031 Butte Treeless summit of Table Mtn. Comment
  UC1609006  Streptopus amplexifolius var. americanus Lowell Ahart 1993-9-13 7232 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  RSA126018  Styrax redivivus E. K. Balls 1957-5-22 22509 Butte Pulga, US Hwy 40 alt., Oroville to Quincy. 488 Comment
  UCSB57880  Suaeda calceoliformis Oswald, Vernon 1989-10-18 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
  CHSC45524  Suaeda occidentalis Lowell Ahart 1984-11-6 3227 Butte On the banks of a small ditch, west of the parking area, east of the Gray Lodge Waterfowl Management Area Headquarters, about 1/2 mile west of Pennington Road, about 12 miles south-west of Gridley. 30 Comment
  CHSC45265  Subularia aquatica var. americana V. Oswald; L. Ahart 1988-10-6 3704 Butte Summit Lake located ca. 4 mi (air) se of Jonesville. On the south strand of the lake. 1889 Comment
  CHSC46865  Subularia aquatica var. americana Vernon Oswald 1989-8-29 3974 Butte Largest of a cluster of three snow lakes located ca. 2 mi (air) e of the peak of Snow Mtn, ca. 3 mi (air) s of Humbug Summit. 1950 Comment
  LA204590  Symphoricarpos mollis E. B. Copeland; 1930-7-7 479 Butte Jonesville 1600.0 Comment
  UC179637  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  UC426982  Symphyotrichum bracteolatum E. B. Copeland 1900-1-1 Butte Jonesville, in and near springs 1500 Comment
  CAS-BOT-BC97693  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC64036  Symphyotrichum f