39.51750 39.61750 -121.50028 -121.40028 UC/JEPS: Consortium Search Results
Search Results — 512 specimen records retrieved (512 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/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC97720  Acmispon americanus var. americanus Lowell Ahart 2007-10-31 14518 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC84859  Acmispon argophyllus var. fremontii L. P. Janeway; John Hunt 2003-6-6 7815 Butte Northern Sierra Nevada Foothills. South-facing slope above Lake Oroville 650 m north-northeast of the north end of Bidwell Bar Bridge. 296 Comment
  CHSC113287  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  JEPS122195  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC110345  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 5.6 road km north of the bridge over Canyon Creek arm of Lake Oroville. 357 Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC85917  Agoseris heterophylla L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7757 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.8 km north of the Spillway Boat Ramp. 296 Comment
  UC1563282  Agrostis exarata Lowell Ahart 1990-9-30 6608 Butte about 1/8 mi ne Canyon Creek Bridge across Lake Oroville (below the high water line of Lake Oroville); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  UCD149814  Agrostis gigantea William Anderson 1965-6-20 s.n. Butte Canyon Creek. Comment
  UC1586600  Allium peninsulare Vernon H. Oswald and Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway); Lake Oroville Recreation Area, Dan Beebe Trail 213 Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  CDA3266  Amaranthus albus L. Ahart 2002-10-17 9965 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC83056  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97133  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS113490  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  RSA726362  Amaranthus albus L. Ahart 2007-7-2 14240 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
  CHSC51248  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC83026  Amaranthus californicus Lowell Ahart 2002-10-17 9984 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
  JEPS103456  Amaranthus californicus Lowell Ahart 2002-10-17 9984 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC1563277  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  JEPS113491  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  RSA726365  Amaranthus hybridus L. Ahart 2007-7-2 14241 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
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC54305  Aphyllon epigalium subsp. epigalium Vernon H. Oswald; Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 170 Comment
  CHSC114947  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville about 1/4 mile north of Miners Ranch Reservior, about 4 miles East of Oroville. 218 Comment
  JEPS124181  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  UCD52197  Arctostaphylos viscida Joseph M. DiTomaso 1976-5-23 459 Butte California, Butte County: Lake Oroville, peninsula on south side. 274 Comment
  UC177598  Arctostaphylos viscida subsp. viscida H. M. Hall 1914-8-2 9830 Butte foothills near Bidwell Bar (ridge summit near Mt. Ida Ranch); Sierra Nevada Mountains Comment
  CHSC4665  Aristolochia californica R. Carter 1966-4-11 336 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds. W of R.R. bridge over S Fork. 152 Comment
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 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. 259 Comment
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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Mar 31 2009
  CHSC41240  Aspidotis californica J. D. Jokerst 1985-3-17 2158 Butte The first one east of Potters Raive. Ca 1/2 mile south of Box Hall Flat, north of Lake Oroville. Comment
  CHSC40307  Astragalus gambelianus Ahart; Jokerst 1985-5-10 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. Comment
  CAS-BOT-BC155943  Bromus commutatus Lowell Ahart 1983-6-26 4143 Butte Sierra Nevada. Along Ponderosa Way, ca. 0.5 mile south of the East Fork of Canyon Creek, ca. 13.5 miles northeast of Oroville. 550 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  CHSC54117  Bromus laevipes Vernon H. Oswald; Lowell Ahart 1991-5-13 4579 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). All along the trail. 213 Comment
  CHSC85002  Bromus laevipes L. P. Janeway; John Hunt 2003-6-5 7806 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 173 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 299 Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CAS-BOT-BC161611  Bromus sterilis Ahart; Jokerst 1985-5-10 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2.25 miles north of Oroville Dam. 350 Comment
  CHSC40398  Callitriche heterophylla var. bolanderi Ahart; Jokerst 1985-5-10 4946 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC10650  Calochortus albus Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC86568  Calycadenia oppositifolia L. P. Janeway 2003-5-7 7775 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  RSA788196  Calycadenia oppositifolia R. L. Carr 1977-7-6 2033 Butte Big Ridge Rd, 2.3 mi SE of jct with Oroville-Quincy Hwy, S of Berry Creek. 610 Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  UC854796  Calycanthus occidentalis R. Sprague 1939-5-20 Butte Feather River Comment
  CHSC54088  Carduus pycnocephalus Vernon H. Oswald; Lowell Ahart 1991-5-13 4587 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  SEINET7550019 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Sycamore Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. Oroville Dam quad 7.5' quad. 274 Comment
  CHSC85920  Carex aquatilis var. aquatilis L. P. Janeway; Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Syca-more Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. 274 Comment
  CHSC54113  Carex bolanderi Vernon H. Oswald; Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). On the edge of Palermo Canal. 170 Comment
  UC1586586  Carex bolanderi Vernon H. Oswald and Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway, on the edge of Palermo Canal); Lake Oroville Recreation Area, Dan Beebe Trail 170 Comment
  CAS-BOT-BC34952  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Ca. 0.5 mile south of Bax Hall Flat, 1 mile east of Potter Ravine, immediately north of Lake Oroville. Comment
  CHSC41227  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Along intermittent creek that drains Box Hall Flat. Ca. 1.0 mile east of Potter Ravine, north of adjacent to to Lake Oroville. Comment
  CHSC85918  Carex gracilior L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oro-ville; 2.1 km east of the Bidwell Bar Bridge; next to Craig Saddle Boat-in Campground. 290 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
  CHSC83936  Carex hirtissima L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Northern Sierra Nevada Foothills. Near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. Meadow. 280 Comment
  SEINET7561550 Image available Carex hirtissima L. P. Janeway, Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Oroville Dam quad. Northern Sierra Nevada Foothills, near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. 280 Comment
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC40888  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC114951  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte Road cut on the east side of Oroville Quincy Highway (162), about one mile north of the suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. 335 Comment
  CHSC49015  Castilleja lineariloba Vernon Oswald 1985-4-1 1691 Butte Oroville-Quincy Rd. 0.9 mi n of Bidwell Bar Bridge. Comment
  CHSC73821  Castilleja lineariloba B. Castro 1998-5-11 788 Butte On W-facing roadcut slopes above the Oro-Quincy Hwy, 4 mi e of its jcn with Forbestown Rd and 1.1 rd mi E of Bidwell Bar Bridge, by Lake Oroville. 313 Comment
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  UC177593  Ceanothus cuneatus var. cuneatus H. M. Hall 1914-8-2 9831 Butte foothills near Bidwell Bar (near Mt. Ida Ranch), Sierra Nevada Mts. Comment
  CHSC31915  Centaurea calcitrapa M. S. Taylor 1980-8-30 3323 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, 9 mi n of Oroville. 304 Comment
  JEPS115250  Centaurium muehlenbergii Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  RSA770101  Centaurium muehlenbergii L. Ahart 2008-11-4 15402 Butte Sides of Potter Ravine, below high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 243 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC30784  Centaurium tenuiflorum M. S. Taylor 1980-8-30 3322 A Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CAS-BOT-BC222898  Cephalanthus occidentalis 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
  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
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  RSA0118721  Cerastium glomeratum Lowell A. Ahart 2014-4-15 19355 Butte About 400 yards west of the old road, about 3.5 miles (air) northeast of Oroville Dam. 236 Comment
  UCD98036  Cerastium glomeratum Joseph M. DiTomaso 1976-5-23 474 Butte On south side of Lake Oroville. 274 Comment
  CDA42979  Chamaesyce maculata L. Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC113196  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC51259  Chamaesyce maculata Lowell Ahart 1990-10-3 6617 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. 259 Comment
  CHSC83079  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97130  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC97699  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS103448  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 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
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  JEPS115034  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS121304  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. 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
  UC1563291  Chamaesyce maculata unknown 1990-5-3 6617 Butte 1/4 mi ne Canyon Creek Bridge (accross Lake Oroville below high water line); East Fork of Canyon Creek 259 Comment
  CHSC51260  Chamaesyce nutans Lowell Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville, below the high water line of Lake Oroville. 228 Comment
  RSA518698  Chamaesyce nutans L. Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 miles north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  UC1563263  Chamaesyce nutans unknown 1990-4-30 6650 Butte 1/8 mi n Canyon Creek Bridge (across lake Oroville, on n side of creek, below high water line of the lake); Canyon Creek 228 Comment
  CHSC42120  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1986-11-9 5436 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CHSC51262  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC83024  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97716  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-10-31 14523 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS103264  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) NE of Oroville Dam. 227 Comment
  UC1563257  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte 1/8 mi n Canyon Creek Bridge (n side of Canyon Creek, below high water line); Lake Oroville 228 Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  UC1563283  Chenopodium album Lowell Ahart 1990-9-30 6609 Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC51255  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC51256  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 a Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile northeast of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC83027  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 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
  JEPS103334  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CDA3115  Chenopodium pumilio L. Ahart 2002-10-17 9990 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC39301  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, California. Found growing on dry red rocky soil along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville, California. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  CHSC35136  Clarkia biloba subsp. brandegeeae R. Schlising; R. Banchero 1980-6-6 3646 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC39039  Clarkia biloba subsp. brandegeeae Lowell Ahart 1983-6-26 4142 Butte About 14 miles ne of Oroville, along Ponderosa Way, just a little s of the East Fork of Canyon Creek. On the road cut. 500 Comment
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  CHSC84703  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7801 Butte Northern Sierra Nevada Foothills. On peninsula into Lake Oroville formed by the confluence of South Fork and Middle Fork Feather River arms of the lake; along access road to Craig Boat-in Campground about 510 m east-northeast of the campground. Road cutbank. 317 Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC85007  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 287 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  CHSC35134  Clarkia concinna subsp. concinna R. Schlising; R. Banchero 1980-6-6 3647 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS105625  Clarkia concinna subsp. concinna L. P. Janeway, John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge 290 Comment
  CHSC84858  Clarkia gracilis subsp. gracilis L. P. Janeway 2003-5-24 7795 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. Road cut. 82 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
  CHSC35144  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-6 3648 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  CHSC84866  Clarkia purpurea subsp. quadrivulnera L. P. Janeway 2003-5-24 7796 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. 82 Comment
  CHSC10620  Clarkia unguiculata Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 182 Comment
  CHSC35146  Clarkia unguiculata R. Schlising; R. Banchero 1980-6-6 3660 Butte N of Lake Oroville along Hwy 162, 1.9 miles N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  RSA408294  Collinsia heterophylla Michael A. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Comment
  SBBG17350  Collinsia heterophylla M. Vincent 1962-4-20 214 Butte Hwy 40, Feather River Cyn Rd, 6 mi NE of Oroville near site of Feather River Dam Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  CHSC84862  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
  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
  CDA32106  Conyza canadensis L. Ahart 2008-11-4 15396 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. Comment
  JEPS115278  Conyza canadensis Lowell Ahart 2008-11-4 15396 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
  RSA770102  Conyza canadensis L. Ahart 2008-11-4 15396 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  JEPS115279  Conyza floribunda Lowell Ahart 2008-11-4 15397 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
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC54346  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC58279  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 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
  UC1586403  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam. 213 Comment
  UC1586404  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam 213 Comment
  UC1594678  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East southwest of Oroville Dam. 213 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CAS-BOT-BC190092  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles northeast of Oroville. 269 Comment
  CDA1929  Crypsis schoenoides L. Ahart 2002-10-17 10000 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC41985  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CHSC51286  Crypsis schoenoides Lowell Ahart 1990-9-30 6603 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC83050  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 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
  CHSC97715  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS103336  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS115035  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  RSA726439  Crypsis schoenoides L. Ahart 2007-10-31 14514 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  UC1563280  Crypsis schoenoides unknown 1990-9-30 6603 Butte edges of creek below Canyon Creek Bridge across Lake Oroville (below high-water line of Lake); Lake Oroville, Canyon Creek 228 Comment
  CHSC39974  Cryptantha flaccida L. Ahart; P. Ahart 1983-6-26 4119 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  CHSC40759  Cryptantha flaccida Ahart; Jokerst 1985-5-10 4951 Butte Rock outcropping, north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC113967  Cuscuta campestris Lowell Ahart 2014-11-24 19918 A Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC113968  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  JEPS121891  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  JEPS121892  Cuscuta campestris Lowell Ahart 2014-11-24 19918 -A Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  RSA0119325  Cuscuta campestris Lowell A. Ahart 2014-11-24 19918 Butte Lake Oroville. About 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy HIghway, about 8 miles (air) northeast of Oroville. 231 Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 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
  CAS-BOT-BC190392  Cynosurus echinatus Clare B. Hardham 1975-6-7 20429 Butte South end of Oroville Dam. Comment
  CHSC51281  Cyperus erythrorhizos Lowell Ahart 1990-9-30 6601 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC83084  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS103335  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between 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
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  CHSC51283  Cyperus strigosus Lowell Ahart 1990-10-3 6614 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. 243 Comment
  UC1563285  Cyperus strigosus unknown 1990-10-3 6614 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); E. Fork Canyon Creek 243 Comment
  CHSC39304  Cystopteris fragilis Lowell Ahart 1983-6-26 4130 Butte Along Ponderosa Way, about 2 miles south-east of the inersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC87109  Datura stramonium L. P. Janeway 2003-9-4 7975 Butte Northern Sierra Nevada Foothills. East side of Lake Oroville (North Fork Feather River), 150 m north-northwest of Foreman Boat-in Campground, 850 m west-southwest of Foreman Creek. 10-12 m below high water line. 265 Comment
  CHSC51278  Datura stramonium var. stramonium Lowell Ahart 1990-9-30 6611 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC29798  Daucus pusillus M. S. Taylor; J. D. Jokerst 1980-5-14 2882 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC10671  Delphinium patens subsp. patens Lowell Ahart 1966-5-10 Butte Bidwell Bar. 213 Comment
  CAS-BOT-BC254524  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1983-6-26 4138 Butte Along Ponderosa Way, ca. 14 miles NE of Oroville. Along the edges of the E Fork of Canyon Creek 500 Comment
  CHSC10712  Diplacus douglasii Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC4612  Diplacus kelloggii R. Carter 1966-4-11 329 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R.R. tracks on S side of river. Comment
  CHSC113969  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  CHSC118288  Dittrichia graveolens Robin Carter; Sabrina Bell 2017-4-1 s.n. Butte Northern Sierra Nevada Foothills. CA 3.8 air mi NE of Oroville and 1.2 mi NE of Oroville Dam, off N end of Kelly Ridge on edge of Bidwell Canyon Boat Ramp. 256 Comment
  JEPS121893  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC114948  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  JEPS124180  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC110355  Dudleya cymosa subsp. cymosa L. P. Janeway 2013-5-1 11095 Butte Northern Sierra Nevada Foothills. Southwest-facing high cutbank into bedrock above Oroville-Quincy Hwy about 200 m north-northwest of the north end of the Bidwell Bar Bridge over Lake Oroville. 314 Comment
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC52010  Dysphania pumilio L. P. Janeway; C. A. Janeway 1986-11-23 1944 Butte Foreman Creek access to Lake Oroville. On a +/- muddy and gravelly point in Lake Oroville ca 20-40 ft low below high watr mark. 274 Comment
  CHSC83055  Dysphania pumilio Lowell Ahart 2002-10-17 9990 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
  JEPS121306  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC51287  Echinochloa crus-galli Lowell Ahart 1990-8-30 6604 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  UC1563279  Echinochloa crus-galli Lowell Ahart 1990-9-30 6604 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  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
  JEPS115253  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  CHSC51271  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 6624 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. 259 Comment
  UC1563292  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6624 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  UC1563299  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6623 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  CHSC30900  Epilobium densiflorum M. S. Taylor 1980-8-30 3320 Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 mi e of Oregon City, ca. 5.5 mi n of Oroville. 365 Comment
  CHSC48618  Epilobium densiflorum Vernon Oswald 1985-5-28 1788 Butte Oroville-Quincy Hwy 1.1 mi n of Simmons Rd. 312 Comment
  CHSC35321  Equisetum telmateia subsp. braunii M. S. Taylor; K. Tharp 1982-4-8 4288 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitor's Center, Oroville. 243 Comment
  CHSC97129  Eragrostis cilianensis Lowell Ahart 2007-7-2 14243 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  JEPS113719  Eragrostis cilianensis Lowell Ahart 2007-7-2 14243 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97776  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS103447  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between 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
  JEPS115033  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  CAS-BOT-BC284084  Eragrostis pectinacea var. pectinacea Lowell Ahart 1979-9-8 s.n. Butte About 1/2 mile west of Oroville Dam 200 Comment
  CDA34555  Eragrostis pectinacea var. pectinacea L. Ahart 2008-11-4 15405 Butte On the east edge of the paved road. about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. Comment
  CHSC100523  Eragrostis pectinacea var. pectinacea Lowell Ahart 2008-11-4 15405 Butte On the east edge of the paved road, about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. 273 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 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
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 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
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC32593  Erythronium multiscapideum J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1262 Butte S of and adjacent to Hwy 162, ca 1.5 mi S of the Bidwell Bar Bridge where section 5 and 8 join. Comment
  CAS-BOT-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CHSC39225  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC98570  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Ridge top row of these old trees. 235 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  CHSC54099  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1991-5-11 4576 Butte Lake Oroville, Loafer Creek Recreation Area, near the group camps. Along Roy Rodgers Trail. 341 Comment
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CHSC115415  Festuca perennis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC115405  Ficus carica M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CAS-BOT-BC53541  Frangula californica subsp. tomentella C. H. M. 1906-10-2 s.n. Nevada Bidwell Bar, Feather River Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC37535  Geranium dissectum M. S. Taylor 1982-4-8 4285 Butte At the end of Beckwourth Rd just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  CHSC35319  Geranium molle M. S. Taylor; K. Tharp 1982-4-8 4284 Butte At end of Beckwourth Rd, just above Oroville Dam overlook parking area, Oroville. 320 Comment
  CHSC40922  Gilia capitata subsp. pedemontana Ahart; Jokerst 1985-5-10 4953 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CDA3379  Glinus lotoides L. Ahart 2002-10-17 9982 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97694  Glinus lotoides Lowell Ahart 2007-10-31 14512 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS103370  Glinus lotoides Lowell Ahart 2002-10-17 9982 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
  JEPS115036  Glinus lotoides Lowell Ahart 2007-10-31 14512 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CDA34553  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 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. Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  JEPS113905  Grindelia hirsutula L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills; Along the Oroville-Quincy Hwy 0.3 road km SW of S end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville 306 Comment
  CHSC97328  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills. Along the Oroville-Quincy Hwy 0.3 road km southwest of the south end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville. 306 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
  CHSC83054  Heliotropium curassavicum Lowell Ahart 2002-10-17 9986 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
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  CHSC115412  Heteromeles arbutifolia M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  CHSC39326  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, about 2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  UCD113569  Horkelia tridentata var. tridentata Joseph M. DiTomaso 1976-5-23 475 Butte Peninsula on south side of Lake Oroville. 274 Comment
  CHSC51264  Hypericum mutilum Lowell Ahart 1990-10-3 6627 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. 259 Comment
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Mar 31 2009
  UC1563293  Hypericum mutilum L. Ahart 1990-10-3 6627 Butte ca. 1/4 mi. n.e. Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); Lake Oroville 259 Comment
  CHSC51265  Hypericum perforatum Lowell Ahart 1990-10-3 6616 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. 259 Comment
  UC1563288  Hypericum perforatum unknown 1990-10-3 6616 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (E. Fork Canyon Creek); E. Fork Canyon Creek 259 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CAS-BOT-BC61868  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte East branch of Potter Ravine, on the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC40399  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC86594  Isoetes nuttallii L. P. Janeway 2003-5-7 7774 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC40348  Juncus capitatus Ahart; Jokerst 1985-5-10 4957 Butte Small meadow, near the washed out dam across the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 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
  JEPS113833  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
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 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
  CHSC51284  Juncus tenuis Lowell Ahart 1990-10-3 6621 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC113971  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte On the sides of a small drainage, below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. 225 Comment
  JEPS121895  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte Below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC29800  Keckiella breviflora var. glabrisepala M. S. Taylor; J. Jokerst 1980-6-14 2883 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  UCD123760  Keckiella breviflora var. glabrisepala Joseph M. DiTomaso 1976-5-23 471 Butte Lake Oroville, peninsula at south end. 274 Comment
  CDA31990  Kickxia elatine L. Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. Comment
  CDA42980  Kickxia elatine L. Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CDA6295  Kickxia elatine L. Ahart 2002-10-17 9993 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC113191  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC83090  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97696  Kickxia elatine Lowell Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  HSC100767  Kickxia elatine Lowell Ahart 2007-10-31 14519 Butte 7 (air) mi. NE of Oroville, ~1 mi. S of Hwy. 162 (Oroville Quincy Rd.), W of official parking area, strand of Lake Oroville, Foreman Creek Area. 225 Comment
  JEPS103538  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS115062  Kickxia elatine Lowell Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS121302  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  RSA726557  Kickxia elatine L. Ahart 2007-10-31 14519 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. 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
  JEPS104644  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  JEPS115280  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
  CHSC30751  Lagophylla glandulosa M. S. Taylor 1980-8-30 3322 Butte Along creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC46075  Lagophylla glandulosa J. D. Jokerst 1983-5-24 1775 Butte Adjacent to Highway 162, across the highway from Simmon's Rd., 0.9 miles north of the Bidwell Bar Bridge. Comment
  UCD133614  Lagophylla glandulosa Joseph M. DiTomaso 1976-5-23 477 Butte Lake Oroville, peninsula at south end. 274 Comment
  SFV12202  Lasthenia fremontii G. D. Ames 1962-4-8 s. n. Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC39303  Lathyrus tingitanus Lowell Ahart 1983-6-26 4127 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 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
  CHSC86596  Leptosiphon filipes L. P. Janeway 2003-5-7 7779 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  RSA467654  Leucothoe davisiae Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
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Feb 6 2012
  CHSC39230  Linum bienne M. S. Taylor; K. Tharp 1983-3-11 5226 Butte Along Foreman Creek Rd leading to Foreman Creek Boat-In Camp on Lake Oroville, off Hwy 162, ne of Oroville. Comment
  CHSC46782  Linum bienne R. A. Schlising; F. J. Fuller 1988-6-17 4540 Butte NE of Oroville, near mouth of Forman Creek on Lake Oroville; in open, heavily disturbed area. Comment
  CHSC4658  Lithophragma bolanderi R. Carter 1966-4-11 331 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R. R. tracks on S side of river; growing on rocky slope on E side of bridge over s. Fork of Feather R. Comment
  CHSC40427  Lupinus albicaulis Ahart; Jokerst 1985-5-10 4949 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC46099  Lupinus albicaulis J. D. Jokerst; R. A. Schlising 1983-5-24 1773 Butte Common on the edges and cut banks of Highway 162 east of Oroville. At the junction of Simmon's Rd 0.9 miles north of the Bidwell Bar Ridge. 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
  CAS-BOT-BC196244  Lupinus albifrons var. eminens Lowell Ahart 1967-4-12 s.n. Butte Bidwell Bar 609 Comment
  CHSC35320  Lupinus bicolor var. pipersmithii M. S. Taylor; K. Tharp 1982-4-8 4291 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC39973  Lupinus bicolor var. tridentatus L. Ahart; P. Ahart 1983-6-26 4123 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  UCD109577  Lupinus stiversii Joseph M. DiTomaso 1976-5-23 467 Butte Lake Oroville, peninsula on south side. 274 Comment
  UCD80390  Luzula comosa CNPS SN Foothill Team 2006-3-23 SNNR 1198 Butte CDPR Oroville State Recreation Area. 292 Comment
  CHSC84854  Lychnis coronaria L. P. Janeway; John Hunt 2003-6-5 7812 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CAS-BOT-BC342712  Madia elegans Lowell Ahart 1983-6-26 4116 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC39311  Madia elegans subsp. densifolia Lowell Ahart 1983-6-26 4116 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead on Ponderosa Way. 500 Comment
  CHSC43623  Madia gracilis Vernon Oswald 1985-5-28 1780 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. 304 Comment
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  CHSC4668  Meconella californica R. Carter 1966-4-11 341 Butte Found ca. 1/2 mi. E of Bidwell Bar along old R. R. tracks; growing in sandy soil in middle of tracks. 152 Comment
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CHSC86530  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
  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
  CHSC54118  Melica torreyana Vernon H. Oswald; Lowell Ahart 1991-5-13 4584 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 170 Comment
  UC4586585  Melica torreyana Vernon H. Oswald and Lowell Ahart 1991-5-13 4584 Butte between Canyon Drive and Oroville Dam Blvd East (opposite spillway) Dan Beebe Trail; Lake Oroville Recreation Area Comment
  CHSC51266  Mentha canadensis Lowell Ahart 1990-10-3 6622 Butte Growing 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. 259 Comment
  UC1563287  Mentha canadensis unknown 1990-10-3 6622 Butte about 1/4 mi ne Canyon Creek Bridge (across Lake Oroville, East Fork Canyon Creek, below high water line Lake Oroville); East Fork Canyon Creek, Lake Oroville 259 Comment
  CHSC54092  Microseris sylvatica Vernon H. Oswald; Lowell Ahart 1991-5-13 4588 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 121 Comment
  CHSC83935  Microseris sylvatica L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7756 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.9 km north of the Spillway Boat Ramp. 280 Comment
  UCD122207  Mimulus aurantiacus Joseph M. DiTomaso 1976-5-23 466 Butte Lake Oroville, peninsula on south end. 274 Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  CDA3371  Mollugo verticillata L. Ahart 2002-10-17 9983 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS103455  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC43019  Monardella sheltonii L. P. Janeway 1987-6-5 2127 Butte Along OroQuincy Hwy 0.5 mi S of suspension br over Lake Oroville. 320 Comment
  JEPS62419  Monardella villosa subsp. villosa W. I. Follett 1937-6-25 95 Butte 4.7 mi north Bidwell Bar (on the old Oroville-Quincy highway) 335 Comment
  CHSC115362  Montia fontana Lowell Ahart 2015-2-26 19939 Butte On the west side of the old paved road (Bidwell Bar- Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC51292  Muhlenbergia mexicana Lowell Ahart 1990-9-30 6610 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 acoss Lake Oroville. 243 Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC48656  Navarretia viscidula Vernon Oswald 1985-5-28 1786 Butte Oroville-Quincy Hwy slightly n of Simmons Rd. Beside the road. 304 Comment
  CHSC39042  Navarretia viscidula subsp. purpurea R. A. Schlising 1983-8-6 4431 Butte NE of Oroville Dam. Along Highway 162. 320 Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC42104  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  CHSC113970  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  JEPS121894  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC83016  Panicum capillare Lowell Ahart 2002-10-17 9999 Butte 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
  CHSC97773  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  RSA726556  Panicum capillare L. Ahart 2007-10-31 14513 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  SEINET10661915  Panicum capillare Lowell Ahart 2007-10-31 Ahart 14513 Yuba T20N, R5E, southeast 1/4 Section 18. West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 1623 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  CDA34554  Panicum dichotomiflorum L. Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. Comment
  CHSC100517  Panicum dichotomiflorum Lowell Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC51293  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 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
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  UC1586598  Pectocarya pusilla Vernon H. Oswald and Lowell Ahart 1991-5-13 4580 Butte opposite spillway (between Canyon Dr and Oroville Dam Blvd, Dan Beebe Trail); Lake Oroville Recreation Area 213 Comment
  CAS-BOT-BC67600  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC39309  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  RSA177468  Penstemon azureus subsp. angustissimus R. M. Straw 1962-6-26 2193 Butte 5 miles north of Bidwell Bar. 580 Comment
  UC1302274  Penstemon azureus var. angustissimus Richard M. Straw 1962-6-26 2193 Butte 5 mi n Bidwell Bar; n of Bidwell Bar 580 Comment
  CHSC11325  Pentagramma triangularis subsp. semipallida Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  JEPS104598  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the w side of Encina Grande Rd, ca 50 yd se of Truman Journey Way, ca 2 mi (air) se of of Bloomer Hill, ca 6 mi (air) ne of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  UC1390030  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5994 Butte 6 mi e Oroville Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC51274  Persicaria punctata Lowell Ahart 1990-10-3 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC4644  Petrorhagia dubia R. Carter 1966-4-26 368 Butte Found ca. 10 mi. NE of Oroville on E side of Oroville-Quincy Rd., .3 mi. S of intersection with USFS road 21N40 to Bloomer Mt., growing 10 yds. off road. 609 Comment
  UC397060  Petrorhagia dubia Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  CAS-BOT-BC134036  Phacelia cicutaria var. cicutaria M. S. Taylor; K. Tharp 1983-3-11 5228 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CHSC39109  Phacelia imbricata Lowell Ahart 1983-6-26 4117 Butte About 15 mi ne of Oroville; about 2 mi se of intersection of Oroville/Quincy Highway and Ponderosa Way; on dry, red, rocky soils along Ponderosa Way. 500 Comment
  UC956795  Phacelia imbricata L. Constance 1951-5-20 3379 Butte Feather River hwy near Bidwell Bar (9 mi ne of Oroville) 152 Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  CHSC4667  Phlox speciosa subsp. occidentalis R. Carter 1966-4-11 337 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds W of R.R. bridge over S Fork. 152 Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  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
  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
  CHSC84863  Piperia elongata L. P. Janeway; John Hunt 2003-6-5 7808 Butte Northern Sierra Nevada Foothills. Top of low west-trending ridge into Lake Oroville 350 m west-southwest of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 296 Comment
  UC1586560  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte sw of Oroville Dam (along the Dan Beebe Trail, between Canyon Drive and Oroville Dam Blvd East); Lake Oroville Recreation Area 213 Comment
  CAS-BOT-BC254405  Piptatherum miliaceum Lowell Ahart; Jokerst 1985-5-10 4965 Butte About 0.25 mile W of a small stream, 0.5 mile S of Box Hall Flat, about 1 mile E of Potter Ravine, about 2.75 miles NE of Oroville Dam 350 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC47997  Plagiobothrys bracteatus Vernon Oswald 1985-4-29 1734 Butte Oroville-Quincy Hwy 0.9 mi s of Canyon Creek Bridge. 304 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC35324  Plagiobothrys tenellus M. S. Taylor; K. Tharp 1982-4-8 4290 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC58272  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte Growing on the south side of the spillway of Oroville Dam, on the east side of Oroville Dam. 274 Comment
  UC1594610  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte e side Oroville Dam (on the s side of the spillway of Oroville Dam) 274 Comment
  CHSC115413  Plantago lanceolata M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC101254  Poa secunda subsp. secunda L. P. Janeway; B. Castro 2009-4-11 9724 Butte Northern Sierra Nevada Foothills. At saddle of ridge between Oroville Dam boat ramp and Potter Ravine, 1.2 km north of the boat ramp. 340 Comment
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 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
  CDA22816  Polygonum lapathifolium L. Ahart 2002-10-17 9992 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS103454  Polygonum lapathifolium Lowell Ahart 2002-10-17 9992 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
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  UC1563289  Polygonum punctatum Lowell Ahart 1990-10-3 6620 Butte about 1/4 mi ne Canyon Creek Bridge across lake; Lake Oroville, East Fork of Canyon Creek 259 Comment
  CAS-BOT-BC233210  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, ca. 2.5 miles E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 miles NE of Oroville 600 Comment
  CHSC39324  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  CHSC39312  Polystichum imbricans Lowell Ahart 1983-6-26 4122 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville-Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road not Ponderosa Way. 500 Comment
  CAS-BOT-BC72294  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-6-26 4122 Butte along Ponderosa Way, about 2 miles southeast of the intersection of the Oroville Quincy Highway and Ponderosa Way 500 Comment
  CHSC40331  Poterium sanguisorba Ahart; Jokerst 1985-5-10 4958 Butte Near and on a small washed out dam across the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC41239  Pseudobahia heermannii J. D. Jokerst 1985-3-17 2157 Butte Near bottom of ravine ca 300 meters n of edge of Lake Oroville. First ravine east of Potter's Raive, ca 1/2 mile south of Box Hall Flat. Comment
  JEPS115251  Pseudognaphalium beneolens Lowell Ahart 2008-11-4 15398 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
  CHSC100520  Pseudognaphalium luteoalbum Lowell Ahart 2008-11-4 15399 Butte On the west side of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC100525  Pseudognaphalium thermale Lowell Ahart 2008-11-4 15398 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
  JEPS46211  Quercus X morehus W. I. Follett 1934-7-8 Butte Bidwell Bar Comment
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  UCD80703  Ranunculus muricatus CNPS SN Foothill Team 2005-3-23 SNFN 0064 Butte CDPR, Oroville State Recreation Area, along the North Fork Trail, on the Potter's Point Loop Trail, north of the intersection with Potter's Ravine Trail. 372 Comment
  CHSC46849  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1982-4-8 107 Butte Near Oroville Dam. Comment
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  CHSC84696  Rhus ovata Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between an un-used parking lot along Oroville Dam Blvd. and the Palermo Canal, 1460 ft west of the southeast end of Oroville Dam. 182 Comment
  UC1563290  Rorippa curvisiliqua Lowell Ahart 1990-10-3 6612 Butte about 1/8 mi ne Canyon Creek Bridge (across Lake Oroville, East Fork Canyon Creek, below high water line Lake Oroville); East Fork Canyon Creek, Lake Oroville 243 Comment
  UC1594677  Rorippa curvisiliqua Lowell Ahart 1992-3-21 6738 Butte s Spillway Boat Launch Area (below the high water line Lake Oroville); below the high water line of Lake Oroville 243 Comment
  CDA25116  Rorippa curvisiliqua var. occidentalis L. Ahart 2002-10-17 9988 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC113193  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC51253  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-10-3 6612 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
  CHSC83025  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 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
  JEPS103453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS121305  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CDA25114  Rorippa curvisiliqua var. orientalis L. Ahart 2002-10-17 9987 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC58261  Rorippa curvisiliqua var. orientalis Lowell Ahart 1992-3-21 6738 Butte Below the high water line of Lake Oroville, south of the Spillway Boat Launch Area, Lake Oroville. 243 Comment
  CHSC83086  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS103337  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 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
  CHSC39302  Rumex crispus Lowell Ahart 1983-6-26 4124 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 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. 259 Comment
  CHSC113375  Sagina apetala Lowell Ahart 2014-4-15 19354 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  JEPS122282  Sagina apetala Lowell Ahart 2014-4-15 19354 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  A383167  Salix laevigata A. A. Heller 1914-3-21 11222 Unknown Hills two miles north of Oroville Comment
  CHSC4709  Sambucus mexicana R. Carter 1966-6-15 447 Butte One mi N of Bidwell Bar on Old Quincy Rd, ca. 9 mi. E of Oroville, growing along W side of road. 152 Comment
  UCD127972  Sanicula crassicaulis Joseph M. DiTomaso 1976-5-23 473 Butte Lake Oroville, peninsula at south end. 274 Comment
  CDA4889  Sapium sebiferum G. Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; Between Bidwell Canyon Drive and Lake Oroville, 440 feet south of Arroyo Drive and 2200 feet south-southwest of Bidwell Canyon Campground. Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  JEPS105598  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; between Bidwell Canyon Drive and Lake Oroville, 440 ft S of Arroyo Drive and 2200 ft SW of Bidwell Canyon Campground 283 Comment
  CDA4987  Schinus molle G. Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills; Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 feet southwest of the base of Oroville Dam. Comment
  CHSC84662  Schinus molle Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 ft southwest of the base of Oroville Dam. Along a drainage area below the trailer/office building. 112 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  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
  CHSC42831  Scutellaria californica L. P. Janeway 1987-6-5 2126 Butte Along OroQuincy Hwy 0.5 mi S of Suspension Bridge over Lake Oroville. 320 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  CHSC113286  Senecio vulgaris Lowell Ahart 2014-4-15 19353 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  CHSC35323  Sherardia arvensis M. S. Taylor; K. Tharp 1982-4-8 4286 Butte Immediate vicinity of Oroville Dam Visitors Center, Oroville. 365 Comment
  CHSC35326  Sidalcea asprella M. S. Taylor; R. A. Schlising, K. Tharp 1982-4-8 4283 Butte At the end of Beckwith Rd. just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC84867  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7805 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 173 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 299 Comment
  CHSC84868  Sidalcea asprella L. P. Janeway 2003-5-24 7797 Butte Northern Sierra Nevada Foothills. Along OroDam Blvd. 585 m southwest of the base of Oroville Dam. 137 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  UC1586602  Sidalcea malviflora subsp. asprella Vernon H. Oswald and Lowell Ahart 1991-5-13 4578 Butte between Canyon Drive and Oroville Dam Blvd East (opposite the spillway) (Dan Beebe Trail in Lake Oroville Recreation Area); Lake Oroville Recreation Area 213 Comment
  CHSC11073  Silene laciniata subsp. californica Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC97697  Solanum americanum Lowell Ahart 2007-10-31 14521 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC42979  Stachys pycnantha L. P. Janeway 1987-6-5 2129 Butte Along OroQuincy Hwy just S of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC51267  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte Growing along the sides of the East Fork of Canyon Creek, below high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  JEPS104645  Stephanomeria elata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  CHSC36694  Streptanthus tortuosus R. E. Preston 1982-5-18 286 Butte Roadcut, on w side of Oro-Quincy Hwy, ca. 0.4 mi n of Canyon Cr bridge over Lake Oroville, ca. 7 mi ne of Oroville. 304 Comment
  UCD116302  Streptanthus tortuosus Robert E. Preston 1984-6-19 462 Butte 12 km NE of Oroville, Oro-Quincy Hwy on north side of Canyon Creek bridge. 305 Comment
  CHSC4161  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-11 338 Butte Found ca. 1/8 mi. E of Bidwel Bar along N side of R.R. tracks; on cliff above. 152 Comment
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  CAS-BOT-BC48066  Styrax redivivus Lowell Ahart 1966-5-10 s.n. Butte Bidwell Bar, now the are is under Lake Oroville. 500 Comment
  CHSC51251  Symphyotrichum chilense Lowell Ahart 1990-10-3 6626 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC40323  Thalictrum fendleri var. polycarpum Ahart; Jokerst 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CAS-BOT-BC399765  Thalictrum polycarpum Lowell Ahart 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC4647  Thysanocarpus curvipes var. curvipes R. Carter 1966-4-11 333 Butte Found ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork; at base of cliff along tracks. 152 Comment
  CHSC4648  Thysanocarpus curvipes var. elegans R. Carter 1966-4-11 334 Butte Found ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  CHSC42685  Torilis arvensis subsp. purpurea Vernon Oswald 1985-5-28 1781 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy hwy 0.2 mi s of the bridge. 304 Comment
  CHSC100516  Trichostema lanceolatum Lowell Ahart 2008-11-4 15401 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
  CHSC97718  Trichostema lanceolatum Lowell Ahart 2007-10-31 14517 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC57808  Trifolium albopurpureum var. albopurpureum Vernon H. Oswald; Lowell Ahart 1992-4-8 4894 Butte Ravine NW of the spillway launch ramp at Oroville Dam. 289 Comment
  UC1594660  Trifolium albopurpureum var. albopurpureum Vernon H. Oswald and Lowell Ahart 1992-4-8 4894 Butte nw spillway ramp at Oroville Dam (ravine) 289 Comment
  CHSC54102  Trifolium bifidum var. bifidum Vernon H. Oswald; Lowell Ahart 1991-5-13 4581 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  UC1586599  Trifolium bifidum var. bifidum Vernon H. Oswald and Lowell Ahart 1991-5-13 4581 Butte oppostie spillway (betw Canyon Drive and Oroville Dam Blvd East); Lake Oroville Recreation Area 213 Comment
  CHSC40306  Trifolium campestre Ahart; Jokerst 1985-5-10 4964 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC41238  Trifolium campestre J. D. Jokerst 1985-5-11 2323 Butte Ravine north of Lake Oroville, south of Box Hall Flat ca. 1/2 mile, ca 1 mile east of Potter Ravine. Comment
  CHSC40424  Trifolium ciliolatum Ahart; Jokerst 1985-5-10 4950 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC86567  Trifolium hirtum L. P. Janeway 2003-5-7 7778 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS105604  Trifolium hirtum L. P. Janeway 2003-5-7 7778 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  CHSC29794  Trifolium obtusiflorum M. S. Taylor; James D. Jokerst 1980-6-14 2884 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC39305  Trifolium variegatum var. variegatum Lowell Ahart 1983-6-26 4129 Butte On the sides of a small stream along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC39307  Trifolium willdenovii Lowell Ahart 1983-6-26 4126 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UCD123392  Triphysaria eriantha P. Thompson 1996-4-14 6 Butte Oroville, Cherokee Rd., approx. 1 kilometer south of Oregon Rd. 210 Comment
  CHSC86579  Triphysaria pusilla L. P. Janeway; Gavin Blosser 2003-5-1 7771 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area; 515 m west of mouth of Foreman Creek at Lake Oroville; about 115 m northeast of high water line of the lake. Along small dirt road. 283 Comment
  JEPS105602  Triphysaria pusilla L. P. Janeway, Gavin Blosser 2003-5-1 7771 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area; 515 m west of mouth of Foreman Creek at Lake Oroville; about 115 m northeast of high water line of the lake. Along small dirt road 283 Comment
  CHSC2089  Triteleia ixioides subsp. scabra R. Carter 1964-3-28 69 Butte 105 yds. W of Bidwell Bar bridge on N side of river. 121 Comment
  CHSC32595  Triteleia ixioides subsp. scabra J. D. Jokerst; R. A. Schlising 1981-3-22 1264 Butte S of Hwy 162 1.0 mi N of the Bidwell Bar Bridge. Comment
  UCD139338  Triteleia ixioides subsp. scabra Joseph M. DiTomaso 1976-5-23 458 Butte Lake Oroville, peninsula on south side. 274 Comment
  UCD139383  Triteleia laxa P. Thompson 1996-4-14 5 Yolo Davis, south side of town, path parallel to meters. 17 Comment
  CHSC40491  Urospermum picroides Ahart; Jokerst 1985-5-10 4963 Butte About 50 uards west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  JEPS83276  Urospermum picroides J. D. Jokerst and Ahart 1985-5-11 2324 Butte ca 1/4 mi w of and adjacent to Lake Oroville (ca 1/2 mi s of Box Hall Flat, ca 1 mi e of Potter Ravine) Comment
  UC1530700  Urospermum picroides Ahart and Jokerst 1985-5-10 4963 Butte 1/2 mi s Box Hall Flat (about 1 mi e of Potter Ravine, about 2 and 3/4 mi ne of Oroville Dam) Comment
  CHSC41915  Verbena lasiostachys var. scabrida Lowell Ahart 1983-6-26 4121 Butte Growing along a small stream along Ponderosa Way, about 2 miles southeast of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Blue Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC51279  Verbena lasiostachys var. scabrida Lowell Ahart 1990-10-3 6618 Butte Growing 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. 259 Comment
  CDA6425  Veronica hederifolia T. C. Fuller 1970-4-17 19382 Butte 114 Putnam Dr., just east above Oroville. 0 Comment
  CHSC79584  Veronica hederifolia T. C. Fuller 1970-4-17 19382 Butte 114 Putnam Dr., just E above Oroville. Comment
  UCR129908  Veronica hederifolia T. C. Fuller 1970-4-17 19382 Butte 114 Putnam Dr., just east above Oroville Comment
  CHSC11043  Vinca major Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 304 Comment
  UCD102793  Vitis californica Joseph M. DiTomaso 1976-5-23 476 Butte Peninsula at E end of Lake Oroville. 274 Comment
  UCD137028  Wyethia angustifolia Joseph M. DiTomaso 1976-5-23 465 Butte Lake Oroville, south side on peninsula. 274 Comment
  CHSC54087  Yabea microcarpa Vernon H. Oswald; Lowell Ahart 1991-5-13 4582 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment



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