Search Results — 2000 specimen records retrieved (1620 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC110348  Abutilon theophrasti B. Castro 2006-8-10 1594 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.2 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of dirt road which crosses Cherokee Canal just N of the Biggs canal. 31 Comment
  UC1192282  Abutilon theophrasti Herbert L. Mason and Verne Grant 1946-9-4 13105 Butte Colusa Gun Club Butte Sink Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  SD2927  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 Butte Jonesville 2100 Comment
  CAS-BOT-BC331609  Acer macrophyllum Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  SFV16943  Acer macrophyllum J. N. Hogue 1980-9-6 83 2 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  RSA18969  Acer negundo subsp. californicum L. S. Rose 1937-6-10 37378 Butte 7 miles west of Honcut, along the banks of the Feather River 23 Comment
  CAS-BOT-BC21750  Achillea millefolium John Thomas Howell 1962-6-16 37581 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  CHSC105812  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC26779  Achillea millefolium M. S. Taylor 1978-5-6 1587 Butte In serpentine, Magalia. 609 Comment
  CAS-BOT-BC210633  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap 426 Comment
  SEINET5585614 Image available Achnatherum lettermanii E. B. Copeland 1929-1 342 Butte Jonesville 1550 Comment
  CAS-BOT-BC216462  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC218051  Achnatherum stillmanii R. F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  CHSC43282  Acmispon americanus var. americanus Lowell Ahart 1987-8-30 5867 Butte On a large gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south east of Jarbo Gap. 271 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC33899  Acmispon brachycarpus M. S. Taylor 1981-4-21 3550 Butte S side of Concow Rd, on Ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC45285  Acmispon glaber var. glaber Vernon Oswald 1988-4-28 3289 Butte Hwy 99 along the Thermalito Afterbay, 0.5 mi s of Hwy 162 (east). 33 Comment
  CHSC33123  Acmispon nevadensis M. S. Taylor 1981-5-15 3748 Butte Edge of landing at short spur rd off Chino Ridge Rd (22N28) near Last Cahnce Creek, ca. 4 air mi due e of Jarbo Gap on Feather River Hwy 70. 853 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC95177  Acmispon nevadensis var. nevadensis R. D. Fischer 2004-6-20 819 Butte Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 1.5 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. 1310 Comment
  CHSC40418  Acmispon strigosus Lowell Ahart 1985-5-31 5034 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC26729  Acmispon wrangelianus M. S. Taylor; M. Hayes 1978-4-14 1557 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC38503  Acmispon wrangelianus Vernon Oswald 1983-4-25 384 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC45537  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC46587  Aconitum columbianum var. columbianum V. Oswald; L. Ahart 1989-7-21 3878 Butte Middle branch of upper Butte Creek, ca. 0.8 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. 1828 Comment
  CHSC52676  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-6 328 Butte Ca. 0.9 mi w of Cherry Hill in the ne part of Butte County, Butte Meadows. 1414 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  CAS-BOT-BC418781  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1524 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  CHSC69036  Adenocaulon bicolor Lowell Ahart 1997-8-1 7801 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southest of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  UCD80686  Adiantum jordanii CNPS SN Foothill Team 2005-5-26 SNNR 0094 Butte City of Chico, Upper Bidwell Park, to the NE of the Disk golf course down hill. 365 Comment
  CHSC49488  Aegilops triuncialis Vernon Oswald 1987-5-14 2904 Butte Hwy 32, 1.4 mi sw of Forest Ranch. 701 Comment
  CHSC38456  Aesculus californica Vernon Oswald 1983-5-21 519 Butte Upper Bidwell Park, Chico, on the north rim 3400 ft e of the power lines. 292 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
  CHSC36538  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC37259  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC65887  Agoseris heterophylla Vernon Oswald 1996-4-20 7402 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  SEINET10942481  Agropyron intermedium Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville. 998 Comment
  CHSC27289  Agrostis capillaris P. Moyer 1972-4-27 228 Butte CSUC campus. In front of Physical Sci. Bldg. 60 Comment
  CDA13312  Agrostis exarata G. F. Hrusa, T. D. Wilfred 1996-7-9 13158 Butte Sierra Nevada; Shaded banks on E side of bridge over Marble Creek along USFS N60. Occasional, perennial. Comment
  CHSC42996  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC49495  Agrostis exarata Vernon Oswald 1987-5-18 2905 Butte Butte Creek Reserve on the north side of Butte Creek e of Hwy 99. 68 Comment
  SEINET10507082  Agrostis exarata Mary Susan Taylor 1977-8-17 Taylor 1497 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  CHSC46603  Agrostis idahoensis V. Oswald; L. Ahart 1989-7-21 3881 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC6694  Agrostis microphylla Marilyn Lee 1968-4-19 139 Butte On W side of Cherokee Road, Table Mt. Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  SEINET10507106  Agrostis microphylla Lowell Ahart 1984-5-7 Ahart 4592 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SACT000147  Agrostis rossiae Herbert Copeland 1934-7-9 Butte Comment
  CHSC39287  Agrostis scabra Lowell Ahart 1983-7-29 4220 Butte About 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  SEINET10483794  Alchemilla occidentalis Mary Susan Taylor 1978-4-14 Taylor 1549 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CDA14089  Allium amplectens G. F. Hrusa, T. D. Wilfred 1997-7-3 13974 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC20678  Allium amplectens M. S. Taylor 1975-6-30 822 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  SEINET195011  Allium amplectens A. A. Heller 1941-5-24 16152 Butte Clark Road 2 miles below Paradise. Comment
  CAS-BOT-BC460728  Allium amplectens Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  SEINET12046590  Allium amplectens K. D. Johnson 1978-1 14 Butte E side of Cohasset Rd., .7 mi SE of Chico Municipal Airport control tower, 5 mi N of Chico 73 Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  SEINET10905148  Allium cratericola Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4863 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  UCD141836  Allium cratericola L. K. Mann 1959-4-12 s.n. Butte Table Mountain, East of Chico near Cherokee. Comment
  SEINET10839451  Allium membranaceum Mary Susan Taylor 1982-6-24 Taylor 4737 Butte T23N R5E ne/se sec 30. Pulga SW quad. Shaded rdcut on Flea Valley Ridge, ca. l mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. 3600 ft. 1097 Comment
  CHSC46070  Allium obtusum var. obtusum J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1781 Butte At the summit of Bald Rock Dome (Middle Fork Feather River) at its south edge. Comment
  CHSC31527  Allium peninsulare L. Ahart 1977-5-22 1395 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC9547  Allium peninsulare J. Barber 1968-4-6 22 Butte Ca. 2 mi e of Chico Rod and Gun Club at Horseshoe Lake on Upper Bidwell Park Rd. 60 Comment
  UC600454  Allium platycaule H. F. Copeland 1932-7-16 Butte slightly w summit; Jonesville Comment
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  RSA337384  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CHSC48646  Allophyllum integrifolium Vernon Oswald 1986-6-22 2140 Butte Humboldt Rd. 2.7 mi e of Butte Meadows. 1414 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CHSC50703  Alopecurus carolinianus Lowell Ahart 1990-6-16 6517 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  SEINET10790508  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  SEINET10967771  Alopecurus carolinianus Lowell Ahart 1978-4-21 Ahart s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA500432  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3. mi (air) se of Jonesville. 1768 Comment
  CAS-BOT-BC137938  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  UCD55916  Alopecurus saccatus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  CHSC42113  Amaranthus albus Lowell Ahart 1986-11-7 5418 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  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
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  SEINET10483109  Amelanchier pallida Mary Susan Taylor 1980-5-8 Taylor 2598 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  JEPS110076  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  UCD102883  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 Comment
  CHSC34233  Amsinckia intermedia M. S. Taylor 1981-4-14 3527 Butte Nw corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  UCR237311  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18761 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10969123  Amsinckia intermedia Mary Susan Taylor 1981-4-14 Taylor 3527 Butte T21N R3E se/ne sec 36, Cherokee quad. Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 450 ft. 137 Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CHSC38634  Anagallis arvensis Vernon Oswald 1983-4-6 289 Butte Upper Bidwell Park, chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between parking Areas R and S). 256 Comment
  CHSC81542  Anagallis arvensis Sabrina Wright 2000-4-27 Butte Chico. Verbena Ave., in flower bed. 60 Comment
  CHSC51349  Anaphalis margaritacea Vernon Oswald 1990-9-11 4450 Butte About 1.5 miles south-southeast of Brush Creek. 960 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  HSC71487  Angelica californica J. M. DiTomaso 1980-8-28 1952 Butte 2 mi W of Paradise on Honey Run Rd. 457 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  JEPS103530  Anisocarpus madioides Lowell Ahart 2002-6-21 9746 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  SFV11428  Anthemis cotula M. L. Vincent 1963-6-10 415 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CAS-BOT-BC137751  Anthoxanthum odoratum V. Oswald; L. Ahart 1988-6-17 3402 Butte Pinkard Creek ca. 1.5 mile north of Lost Creek Reservoir. 1066 Comment
  UC1609081  Anthoxanthum odoratum Lowell Ahart 1993-6-26 7013 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC101270  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  RSA769680  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte North side of gravel road, Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC99491  Antirrhinum leptaleum Lowell Ahart 2008-7-23 15155 Butte East side of Lumpkin Road, about 200 yards north of the intersection of Forbestown Road and Lumpkin Road, about 10 miles (air) north of Oroville. 513 Comment
  CHSC42265  Antirrhinum vexillo-calyculatum subsp. intermedium David M. Thompson 1983-7-5 365 Butte Hwy 70, 0.3 miles NE of NE end of bridge at intersection of Pulga Road and Hwy 70. 487 Comment
  SEINET10547631  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-6-22 Taylor 2169 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC30880  Aphanes occidentalis J. D. Jokerst 1979-4-1 1165 Butte Top of North Table Mt, S of the intersection of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  SEINET10454899  Apocynum pumilum var. rhomboideum Mary Susan Taylor 1978-9-9 Taylor 1921 Butte Along the Skyway in the village of Inskip. 1468 Comment
  POM196111  Arabis rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  SFV2633  Arbutus menziesii M. L. Vincent 1961-3-30 21 Butte Spense Road near cross street Pearson. Roadside. Comment
  UC1950043  Arbutus unedo Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15490 Butte Near the east side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC407772  Arceuthobium californicum Clarence R. Quick 1953-7-1 53 -32 Butte Big Bar Mountain, ridge E of Pulga Comment
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  CAS-BOT-BC410080  Arceuthobium occidentale A. A. Heller 1913-10-1 11144 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC87410  Arceuthobium occidentale R. D. Fischer 2004-2-28 122 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). UTM: 10610219E 4408698N. 533 Comment
  CHSC24702  Arctostaphylos J. R. Nelson 1976-3-1 5 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  UCD52818  Arctostaphylos John Thomas Howell 1975-6-15 51098 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  RSA632996  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27451 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633000  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  JEPS119572  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  CHSC108842  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CAS-BOT-BC38529  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51110 Butte Paradise. Skyway just ne. of Billie Rd. 609 Comment
  CAS-BOT-BC38566  Arctostaphylos mewukka subsp. truei C. Hart Merriam 1928-10-15 s.n. Butte Bald Rock Rd., about 8 mi. n. of Bidwell Bar, Feather River. Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CHSC3303  Arctostaphylos nevadensis M. L. Miller 1966-4-23 Butte About 1/2 mile above Stirling City on the Skyway. Comment
  UCD51953  Arctostaphylos truei John Thomas Howell 1975-6-15 51083 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SJSU10836  Arctostaphylos viscida L. J. Ericsen 1955-4-16 106 Butte between Paradise & Megalia 609 Comment
  CAS-BOT-BC48281  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-3 s.n. Butte Near Honcut 60 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  CAS-BOT-BC137557  Aristida oligantha John Thomas Howell 1961-9-22 36762 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. Comment
  CHSC112939  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km, often lining the 3 dm wide strip next to the pave-ment, sometimes thickly so. 77 Comment
  CHSC14116  Aristida oligantha F. T. Griggs 1973-8-19 123 Butte 10 miles s of Chico; 0.4 mile s of intersection of Pentz Road and Hwy 99E. Comment
  UCD34842  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte Butte County, 3.5 miles east of Honcut along La Porte road. Comment
  CAS-BOT-BC146314  Aristida ternipes var. gentilis Lowell Ahart 1983-8-16 4277 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CHSC104811  Aristolochia californica Lowell Ahart 2010-6-12 16795 Butte Climbing on shrubs on the east side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 216 Comment
  UCSB63600  Aristolochia californica Webster, Steven 1986-3-25 Butte Ca. 1.5 mi. E of Horseshoe Lake, ca. 0.5 N of Chico 76 Comment
  SEINET10475904  Aristolochia californica Mary Susan Taylor 1981-3-24 Taylor 3442 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  RSA507023  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UC84122  Arnica dealbata R. M. Austin July 1896 790 Butte Colby Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  SEINET12318329  Asclepias fascicularis M. S. Taylor 1975-1 791 Butte ca 50yds W of Mud Creek, ca 0.5mi N of Richardson Springs Hotel, ca 7 mi NE of Chico 244 Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC68884  Aspidotis californica Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 213 Comment
  CAS-BOT-BC65908  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC31237  Aspidotis densa M. S. Taylor; R. A. Schlising 1980-7-6 3076 Butte Old s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  UC398878  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CHSC105530  Aster occidentalis var. yosemitanus Lowell Ahart 2010-9-21 17227 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  JEPS115812  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  JEPS97430  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte 7 mi N of Oroville (North Table Mountain, along edge of dirt road, about 1/10 mi SE of reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  RSA31862  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Treeless summit of Table Mountain, north of Oroville; 304 Comment
  JEPS87417  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CHSC69103  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SBBG28169  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 Butte Jonesville 1600 Comment
  CHSC101083  Athysanus pusillus Lowell Ahart; John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  JEPS116043  Athysanus pusillus Lowell Ahart, John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  JEPS87173  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of the Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  CHSC36556  Atriplex argentea var. mohavensis L. Ahart 1982-7-10 3662 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  SEINET10479061  Atriplex cordulata Lowell Ahart 1983-9-19 Ahart 4454 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38788  Avena barbata Vernon Oswald 1982-12-19 29 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC46431  Avena barbata Lowell Ahart 1989-5-23 6233 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SEINET11689137  Avena barbata Unknown 1980-1 s.n. Butte 0.5 mi N of the airport turn-off on Cohasset rd, N of Chico city limits 76 Comment
  CHSC101803  Avena fatua Lowell Ahart 2009-5-8 15665 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  JEPS115988  Avena fatua Lowell Ahart 2009-4-17 15553 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC79632  Azolla filiculoides Lowell Ahart 2001-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  SEINET11718749  Azolla filiculoides L. Ahart, Jokerst, J. 1985-1 4850 Butte S of Hwy 70, at intersection of Hwy 70 & 191, Valle Grassland 100 Comment
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  RSA726559  Baccharis pilularis L. Ahart 2007-10-30 14508 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  CHSC31585  Baccharis salicifolia L. Ahart 1973-11-1 287 Butte On gravel bars in North Honcut Creek. Near Honcut. 45 Comment
  CHSC30034  Barbarea orthoceras L. Ahart 1980-5-19 2314 Butte Along the edges of the South Fork of the Feather River, near bridge, ca. 1/8 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. 800 Comment
  SEINET10448247  Barbarea orthoceras Mary Susan Taylor 1975-8-31 Taylor 892 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SEINET10838816  Bassia hyssopifolia Lowell Ahart 1983-9-19 Ahart 4453 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  JEPS98557  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  JEPS118614  Bellis perennis L. P. Janeway 2011-6-2 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. Chico 7.5; quad. Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  CHSC112541  Bergia texana B. Castro 2012-9-2 1984 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 600 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 57 Comment
  CHSC92571  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC15943  Boechera breweri subsp. breweri Lowell Ahart 1980-8-2 2520 Butte Humboldt Peak. 2300 Comment
  SEINET10453125  Boisduvalia densiflora Lowell Ahart 1985-6-17 Ahart 5058 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  RSA166329  Boisduvalia glabella D. M. Moore 1960-6-1 89 Butte 1.1 mile W of U.S. 40A on road to Honcut Comment
  POM46120  Boisduvalia macrantha C. C. Bruce 1897-06 2005 Butte [Unspecified] Comment
  SEINET3356337 Image available Boisduvalia sparsiflora A. A. Heller 1914-7-24 11621 Butte Butte Meadows 1219 Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  SEINET10448435  Brassica geniculata Mary Susan Taylor 1975-10-29 Taylor 974 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CAS-BOT-BC30307  Brassica nigra Lowell Ahart 1974-5-18 s.n. Butte About 3 miles north of Honcut. 150 Comment
  CHSC110130  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Humboldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  SFV10381  Brassica rapa M. L. Vincent 1964-4-8 507 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CHSC31443  Brickellia californica Lowell Ahart 1980-9-10 2631 Butte Ca. 1 mi NE of Millsap Bar, ca 25 mi NE of Oroville. 900 Comment
  SEINET10474492  Brickellia greenei Mary Susan Taylor 1981-7-10 Taylor 4064 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  SBBG128018  Briza maxima L. Ahart 2010-5-14 16636 Butte W side Hwy 32, just N of the entrance to the Disc Golf Area, upper Bidwell Park, ca. 5 mi (air) NE of Chico 376 Comment
  UCD57149  Briza maxima Beecher Crampton 1965-6-17 7385 Butte 2 miles northeast of Bangor, La Porte Road. Comment
  CAS-BOT-BC145538  Briza minor Lowell Ahart 1980-5-4 2217 Butte Near Hurleton. 600 Comment
  CHSC10552  Briza minor Lowell Ahart 1965-4-20 Butte Peter Ahart Ranch, Honcut. 42 Comment
  JEPS114956  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  POM112996  Briza minor C. C. Bruce 1897-04 1886 Butte Butte Creek Comment
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  CHSC21147  Brodiaea elegans M. S. Taylor 1975-6-30 819 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Green wood Store, Cohasset. 853 Comment
  CHSC117441  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC7137  Brodiaea nana James M. Watson 1969-4-20 12 Butte 3.5 mi e of freeway on Skyway 5 yds. E of road. 182 Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  JEPS94979  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC148835  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  CHSC2133  Bromus diandrus H. Silberman; D. Isaac 1949-5-9 Butte W. side of football field, CSC campus. 54 Comment
  CHSC6722  Bromus diandrus B. Anthony 1968-3-25 413 Butte Chico State College Campus, Chico. Comment
  SEINET6778879  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CHSC36546  Bromus hordeaceus L. Ahart 1982-6-4 3549 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC56626  Bromus hordeaceus J. Lund 1980-3-24 Butte Chico Game Fish Farm, 0.2 mi east of Hwy 99, 1.0 mi north of Hwy 149. 76 Comment
  SEINET10565911  Bromus japonicus Lowell Ahart, John Dittes; Josephine Guardino; Steve Green 2003-5-27 Ahart 10222 Butte T22N R2E, section not surveyed. Normal size plants, on damp dark soil, springy area about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Chico. Common, inconspicuous. Foothill Woodland. 122 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  CHSC100992  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CAS-BOT-BC162019  Bromus racemosus John Thomas Howell 1962-6-15 37534 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC65210  Bromus sterilis Lowell Ahart 1995-5-30 7576 Butte Along the edge of the dirt road, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CAS-BOT-BC161501  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of Feather River near Stirling. Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CAS-BOT-BC438356  Calandrinia ciliata John Thomas Howell 1978-4-17 52844 Butte Table Mountain 381 Comment
  JEPS107920  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC11059  Calandrinia ciliata var. menziesii Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC46485  Callitriche heterophylla var. bolanderi Lowell Ahart 1974-4-11 373 Butte In the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC3306  Calochortus albus M. L. Hillier 1966-5-7 Butte 2.5 miles e. of covered bridge. Comment
  UC843624  Calochortus albus A. A. Heller 1914-5-8 11375 Butte above Clear Creek (on the Paradise road) Comment
  CAS-BOT-BC487508  Calochortus albus Helen Barden 1941-5-17 s.n. Butte Tributary of west branch of North Fork of Feather River, 4 miles from Yankee Hill Comment
  SEINET10872528  Calochortus albus Mary Susan Taylor 1980-4-27 Taylor 2567 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  UC600460  Calochortus leichtlinii E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creek; Jonesville 1700 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  CHSC2925  Calochortus luteus W. Fitzwater 1958-4-26 Butte Humboldt Rd., Chico area. Comment
  CHSC46427  Calochortus luteus Lowell Ahart 1989-5-28 6298 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  CHSC44657  Calochortus nudus L. P. Janeway 1988-7-1 2927 Butte Along mdwy cr draining lake of the SE-most head-waters of Butte Cr. 1935 Comment
  CAS-BOT-BC493083  Calochortus nudus Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC95161  Calochortus superbus R. D. Fischer 2004-4-20 803 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy 32. Collected along Guardian Trail, north of the Disk Golf Course, on a grassy hillside. 335 Comment
  CAS-BOT-BC494317  Calochortus tolmiei A. A. Heller 1918-5-5 s.n. Butte Near Magalla in the yellow pine and oak belt (Q. Kelloggii) on serpentine. 1072 Comment
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  UCD129710  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 144 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC106090  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 miles N. of Chico on Richardson Springs Road. Comment
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC91459  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  UC1971681  Calycadenia spicata G. D. Carr 1971-6-5 559 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  UCD129875  Calycadenia truncata Gerald D. Carr 1971-6-15 562 Butte 0.4 miles west of east boundary of Upper Bidwell Park, SE of Chico. 171 Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  CAS-BOT-BC275394  Calycadenia truncata var. truncata Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  CAS-BOT-BC32307  Calystegia atriplicifolia subsp. buttensis John Thomas Howell 1955-6-14 30471 Butte De Sabla Comment
  CHSC95113  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  JEPS113313  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  RSA754848  Calystegia occidentalis subsp. occidentalis L. Ahart 2009-5-30 15775 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC66383  Calystegia occidentalis subsp. occidentalis Vernon H. Oswalk; Lowell Ahart 1996-6-17 7811 Butte Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy 36 ca 7 mi w of Susanville.Modoc Plateau. Growing on slop at 6.0 mile post E of Dvils Corral Trailhead. 1420 Comment
  UC1120059  Campanula prenanthoides P. L. Johannsen 1936-7-28 967 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quadrangle Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  SEINET10972407  Campanula prenanthoides Howell 1976-7-14 Howell 51818 Butte SIERRA NEVADA, JUST NE OF PULGA BRIDGE, SHADED, GRANITE-LIKE ROCK 1370 Comment
  CDA1336  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Sacramento River East bank overflow area; northwest of Parrott Landing, 1 mile southeast of Ord Ferry. Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  CHSC32631  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-4-2 3472 Butte South side of Forbestown Reservoir, at base of cliff, s side of Rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC34523  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-3-27 49 Butte Ca. 50 m e of Coutelenc Rd, 320 m n of its jct with the Skyway, Magalia. 700 Comment
  JEPS120929  Carex Lowell Ahart 2013-5-27 18710 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET10502757  Carex Lowell Ahart 1985-6-30 Ahart 5078 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC44839  Carex amplifolia L. P. Janeway; R. A. Schlising 1988-8-2 3154 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground. 1143 Comment
  JEPS116030  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  CHSC36066  Carex angustata J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Concow Creek in an open meadow at its headwaters. 1097 Comment
  CHSC53752  Carex angustata L. P. Janeway; C. A. Janeway 1986-9-13 1844 Butte Just east of Scotts John Cr above Rd 26N27 (road connecting Humboldt and Humbug Rds). 1737 Comment
  CHSC88225  Carex angustata Lowell Ahart 2004-7-23 11310 Butte In a small bog, on the south side of the dirt road, about 200 yards east of the large bog, about 3/8 mile (air) east of Bald Mountain Lookout, about 4 1/4 miles (air) northeast of Stirling City. 1702 Comment
  JEPS105638  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1091 Comment
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  SD470  Carex angustata E. B. Copeland 1930-8-10 Butte Jonesville; marshy meadow. 456 Comment
  SEINET10828994  Carex aquatilis var. altior H. E. Brown 1896-11-15 Brown s.n. Butte Near Clear Creek, Butte County. Comment
  CHSC85914  Carex aquatilis var. aquatilis L. P. Janeway; Gavin Blosser, John Hunt 2003-4-22 7764 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  CHSC52845  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-16 3027 Butte Large meadow at head'waters' of Willow Creek. 1935 Comment
  HSC87280  Carex aurea L. P. Janeway, Robert A. Schlising 1988-7-16 3011 Butte Adjacent to Jones Creek at crossing of road to Scotts John Creek. 1616 Comment
  SEINET10927860  Carex aurea Mary Susan Taylor, Lowell Ahart 1982-8-15 Taylor 4191 Butte T25N R5E SW1/4 SE1/4 Sec 35. Joneville SW quad. S side of Coon Hollow Rd in moist spot, 1.1 mi E of its jct with Humbug Rd. 12 mile NE of Stirling City. With Perideridia howellii, Hypericum anagalloides. 1676 Comment
  CHSC61650  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  RSA770098  Carex bolanderi L. P. Janeway, B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River) 823 Comment
  SEINET7552619 Image available Carex bolanderi Lawrence P. Janeway, Marcia Waterway; Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada; pond below Lumpkin Ridge Road about 10km east of Feather Falls and about 1.0km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek; Rooted in soft muddy muck in shady cove of the pond; Clipper Mills 7.5' quad 1209 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  SEINET10817915  Carex bolanderi A. Arthur Heller 1928-6-16 Heller 14667 Butte Damp, grassy places in the Yello Pine Forest at Butte Meadows. Comment
  RSA754391  Carex brainerdii L. P. Janeway 2006-5-28 8646 Butte Northern High Sierra Nevada: 0.2 km E of Concow Road, 1.25 km NNE of Rag Dump, 4.3 km N of Flea Mt. 1268 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC44105  Carex cusickii L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2510 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC107569  Carex cyrtostachya Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  JEPS121422  Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH) Comment
  CAS-BOT-BC320482  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls 1219 Comment
  CHSC112095  Carex densa Lowell Ahart 2012-5-20 18095 Butte Along a small drainage, about 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 346 Comment
  CHSC65784  Carex densa Vernon H. Oswald 1996-4-10 7346 Butte Sacramento River National Wildlift Refuge, Llano Seco Unit. U.S. Fish and Wildlife Services parcel between 7 Mile Lane and the Sacramento River. In a shallow roadside ditch on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. Sacramento Valley. 33 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS104172  Carex densa Lowell Ahart 2003-5-27 10220 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue Chico. 121 Comment
  SEINET14378450 Image available Carex densa Robert F. C. Naczi 2004-7-29 10627 Butte E of Chico, canyon of Big Chico Creek Upper Bidwell Park, high on slope above Salmon Hole, downslope from road, 168 Comment
  RSA0045625  Carex divulsa subsp. divulsa Lowell A. Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 64 Comment
  CAS-BOT-BC75503  Carex echinata var. ormantha F. N. Bassett 1923-6-21 s.n. Butte Jonesville via Butte Meadows. Comment
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  CHSC33860  Carex feta J. D. Jokerst 1981-5-6 1306 Butte N of and adjacent to Yankee Hill Rd ca. 300 m SE of its' junction with Hwy 70 (northern most junction). Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC44995  Carex feta S. C. Morey 1983-7-23 579 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC71196  Carex feta Lowell Ahart 1998-6-9 7990 Butte Large seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  UC182751  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC113415  Carex fracta Lowell Ahart 2014-7-16 19678 Butte Northeast of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET4292216 Image available Carex fracta Unknown 2006-1 13068 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC96567  Carex gracilior L. P. Janeway 2006-5-24 8608 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  SEINET8068024 Image available Carex gracilior Unknown 2009-1 24617 Butte C 0.5km N of North Honcut Creek, 12 miles SE of Oroville, northern Sierra Nevada Foothills (n SNF). Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC42827  Carex hirtissima L. P. Janeway 1987-6-8 2180 Butte 3.0 mi S of Big Bar Mtn via rd. 1021 Comment
  JEPS87676  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte about 3 1/2 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC36894  Carex hirtissima L. Ahart 1982-6-1 3529 Butte A little south of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  UC1748285  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road 1749 Comment
  CHSC52251  Carex infirminervia L. P. Janeway; R. A. Schlising 1988-7-22 3058 Butte Upper southeast slope of Coon Hollow, near beginning of Coon Hollow Creek. 1920 Comment
  CHSC94286  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC95996  Carex jonesii L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8825 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  CHSC78276  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  HSC87069  Carex lemmonii L. P. Janeway 1987-6-27 2344 Butte Just E of Keyser Creek, 4.3 mi. N of Ramsey Bar along Concow Rd. 1479 Comment
  JEPS104630  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on sides of a dirt road, ca 100 yd n of Lumpkin Ridge Road, upper w branch of Know-nothing Creek, ca 1 mi SW of intersection of Lumpkin Ridge Road, road to Fall River, and County Road, ca 4 mi (air) NE of Feather Falls. 1219 Comment
  SEINET7483992 Image available Carex lemmonii E. B. Copeland 1929-1 610 Butte Jonesville 1500 Comment
  CHSC43876  Carex multicaulis L. P. Janeway; C. A. Janeway 1986-8-31 1802 Butte South side of hwy 32, 19 mi E of hwy 99; near Platte Mtn Lookout CDF fire station. 1066 Comment
  UC108032  Carex multicaulis H. F. Copeland 1932-6-27 Butte Goverment Trail near Scotch-John Comment
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 Comment
  CAS-BOT-BC119722  Carex nervina L. P. Janeway; Robert A. Schlising 1988-7-1 2930 Butte Jonesville quad. Meadow between two lakes at SE-most headwaters of Butte Creek. 1935 Comment
  CAS-BOT-BC119562  Carex nudata L. P. Janeway 1987-6-20 2257 Butte Clipper Mills quad.S Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 975 Comment
  CHSC49386  Carex pachystachya L. P. Janeway 1988-6-14 2769 Butte Along W Branch Butte Cr at crossing of road to Ewalt Camp, 1.9 mi W from Hwy 32. 922 Comment
  CHSC43952  Carex praegracilis Vernon Oswald 1988-5-17 3309 Butte South side of Hwy 149, 0.2 mi w of Hwy 70 at Wicks Corner. 79 Comment
  CHSC46996  Carex praegracilis Vernon Oswald 1988-4-26 3281 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC41301  Carex subfusca S. C. Morey 1983-7-22 537 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CAS-BOT-BC115303  Carex utriculata L. P. Janeway 1988-7-29 3133 Butte Meadow near Humbug Summit Rd. 1.5 mi NE of the Snag Lake Dam. 1767 Comment
  JEPS110204  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS108148  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir 762 Comment
  JEPS120052  Carya glabra Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near table 9, Lower Bidwell Park, Chico. Comment
  JEPS124001  Castilleja affinis subsp. affinis Lowell Ahart 2015-4-18 20047 Butte About 300 yards east of the bridge across Rocky Honcut Creek, about 8 1/2 miles (air) southeast of Oroville. Comment
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  CHSC116220  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte On the east road bank, east side of the paved road, about 100 yards south of a creek, about 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. 1050 Comment
  CAS-BOT-BC255466  Castilleja applegatei var. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  UC426962  Castilleja arachnoidea E. B. Copeland 1930-7-12 468 Butte above Jonesville 2100 Comment
  UCD80772  Castilleja attenuata CNPS SN Foothill Team 2006-4-19 SNNR 0744 Butte City of Chico, Upper Bidwell Park. 156 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC47506  Castilleja campestris subsp. campestris Lowell Ahart 1978-4-10 1625 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82261  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC114967  Castilleja exserta subsp. exserta Lowell Ahart 2015-4-1 20000 Butte Along Bear Valley Road, in Bear Valley, about 50 yards west of Bear Creek, about 6 miles south of Leesville, about 6 miles south of Highway 20. 395 Comment
  CHSC33145  Castilleja lacera James D. Jokerst 1981-5-11 1310 Butte Top of Doe Mill Ridge. 457 Comment
  CHSC38712  Castilleja lacera Vernon Oswald 1983-4-18 341 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. 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
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CHSC54336  Caulanthus lasiophyllus Lowell Ahart 1991-5-8 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  SEINET10448633  Caulanthus lasiophyllus var. lasiophyllus Lowell Ahart 1991-5-8 Ahart 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S2. 61 Comment
  CHSC1502  Ceanothus cuneatus M. Roberson 1956-4-9 Butte SW. of Paradise, along Skyway. 426 Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  SEINET10493628  Ceanothus cuneatus Mary Susan Taylor 1975-4-26 Taylor 523 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CAS-BOT-BC64445  Ceanothus diversifolius Clarence R. Quick 1964-7-9 64 -72 Butte At head of Concow Creek. 1082 Comment
  CAS-BOT-BC50777  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CHSC48834  Ceanothus lemmonii Vernon Oswald 1984-4-9 1119 Butte Jct. of Forbestown Rd. and Lumpkin Rd., ca. 10 mi e of Oroville. 548 Comment
  UC1281466  Ceanothus lemmonii H. E. McMinn 1946-5-11 5511 Butte One mile east of Forbestown. Comment
  CAS-BOT-BC52006  Ceanothus prostratus Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada. 7 mi. W. of De Sable on rd. to Forest Ranch 762 Comment
  POM193369  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Joneville. 488 Comment
  UC2026879  Celtis australis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  JEPS117916  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Upper Bidwell Park, Chico Cascade Range Foothills (north side of Big Chico Creek 455 m west of Day Camp) 91 Comment
  CHSC20502  Centaurea cyanus M. S. Taylor 1975-7-1 828 Butte 1456 Arcadian, Chico. 60 Comment
  CHSC61294  Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte On the west side of La Porte Road, about 2 miles south-west of Clipper Mills. 1066 Comment
  UC1609220 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET3375646  Centaurea solstitialis C. Lumer, S. Yost 2006-8-1 2454 Butte Chico, California. Near Motel 6. 91 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
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  JEPS127004  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte About 200 yards west of Loma Rica, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC2342  Cephalanthera austiniae R. Carter 1964-6-12 118 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown R. 914 Comment
  UCSC000159  Cephalanthera austiniae Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  CHSC111148  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC92510  Cerastium glomeratum Lowell Ahart 2005-12-11 12524 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS107331  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 -A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC113371  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte In shallow water, small pond on the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  JEPS122198  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  CDA35238  Chamaesyce hooveri T. C. Fuller 1962-5-17 8712 Butte Highway 99E to Vina, 12.3 miles northwest of Chico. 0 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
  JEPS122287  Chamaesyce maculata Lowell Ahart 2014-8-24 19729 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  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
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  CHSC113526  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC33632  Chamaesyce serpillifolia subsp. serpillifolia R. E. Preston; R. A. Schlising 1981-7-21 30 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  CHSC69719  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1997-10-24 7942 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  RSA746977  Chenopodium album var. missouriense George K. Helmkamp, E. Helmkamp 2007-10-7 13065 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  JEPS115101  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 60 Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CHSC11807  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  CAS-BOT-BC498629  Chlorogalum angustifolium John Thomas Howell 1962-6-15 37420 Butte 5 miles west of Oroville; Sierra Nevada Comment
  SEINET10472636  Chlorogalum angustifolium Mary Susan Taylor 1978-5-7 Taylor 1592 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC142064  Chlorogalum angustifolium Mrs. R. M. Austin May 1899 737 Butte Comment
  CAS-BOT-BC252669  Chorizanthe membranacea Lowell Ahart 1975-6-5 s.n. Butte North Honcut Creek, Honcut 45 Comment
  CHSC103960  Chorizanthe stellulata Lowell Ahart 2010-5-23 16735 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CAS-BOT-BC36368  Chrysolepis sempervirens John H. Thomas 1974-11-3 17659 Butte Between Stirling City and Butte Meadows, north of Chico. 5.2 miles from Butte Meadows along the road. 1524 Comment
  UC1562013  Cicendia quadrangularis Barbara Ertter with Lowell Ahart 1986-4-13 5900 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  RSA325174  Cicendia quadrangularis M. S. Taylor, L. Ahart, Jim Jokerst 1984-4-6 5398 Butte Approximately 0.5 mile north of Kunkle Reservoir, on east side of Pentz-Magalia Highway, ca. three miles south of Paradise. Comment
  CHSC49528  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. On the edge of the creek. 1813 Comment
  CHSC94529  Cinna latifolia Lowell Ahart 2006-8-15 13191 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS87145  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte small stream about 1/2 mi n Carr Mine (s side of Coon Hollow, about 2 (air) mi s of Snow Mountain); s side Coon Hollow 1737 Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC24767  Clarkia arcuata P. J. Welch 1976-4-12 16 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  CHSC35142  Clarkia arcuata R. Schlising 1980-6-12 3688 Butte NW part of county, 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CAS-BOT-BC163541  Clarkia arcuata E. B. Copeland 1899-4-22 s.n. Butte Near Chico Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  UCD104329  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CAS-BOT-BC164525  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-3 63 -54 Butte 12 miles northeast of Chico Comment
  CHSC46131  Clarkia gracilis subsp. gracilis Lowell Ahart 1975-5-12 755 Butte On dredger piles, along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 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
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC71141  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. West-facing road cutbank. 902 Comment
  SEINET4145627  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mountain House, Brush Creek, and Mosquito Creek, 5 year old timber plantation above Road 22N49 0.1 mi north of French Creek Road 975 Comment
  CAS-BOT-BC163353  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CHSC65577  Clarkia mosquinii L. P. Janeway 1995-7-15 4857 Butte South side of Watson Ridge about 2.2 mi east-northeast of its western end, and 1.1 mi south of Pompys Point. 1115 Comment
  CHSC70737  Clarkia mosquinii L. P. Janeway 1993-7-1 4414 Butte North side of French Creek 0.2 mi west of mouth of Ram Creek; along Rd 22N34 0.2 mi west of 'low water crossing' of French Creek. 624 Comment
  UC1730254  Clarkia mosquinii L. P. Janeway and Perrie Cobb 1993-7-6 4430 Butte 1.8 mi E-NE of Bald Rock Dome (Watson Ridge, southwestern end, 0.7 mi NW of Fall River) 1097 Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CHSC62121  Clarkia purpurea subsp. viminea L. P. Janeway 1993-6-23 4400 Butte Plumas National Forest. North side of French Creek, 0.5 mi west of mouth of Ram Creek; north side of Rd 22N34. 615 Comment
  CHSC64118  Clarkia rhomboidea L. P. Janeway; Jean Hubbel, Dave Wood 1994-6-3 4655 Butte Forest Ranch; 0.5 mi east of Hwy 32 on Nopel Avenue and Cody Lane. Along side of dirt road. 725 Comment
  HSC95777  Clarkia rhomboidea L. P. Janeway 1993-6-23 4395 Butte Upper end of Galen Ridge 250 ft. NW of Bald Rock Rd., 0.7 mi. SW of Oroville-Quincy Hwy. 1037 Comment
  CHSC87565  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a look out point). 365 Comment
  SEINET210458  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville CA. along Spring Cr. 1500 Comment
  SEINET10572693  Claytonia parviflora Mary Susan Taylor 1981-4-28 Taylor 3562 Butte T22N R5E sw/sw sec 2l, Berry Creek Rd. E side of Rd 23N28.2, ca. 0.1 mi N of its jct with 22N84, ca. 1.4 mi W of Chino Creek, ca. 23 air mi NW of Oroville. 3100 ft. 945 Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  CHSC56067  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-6-16 2804 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. 1310 Comment
  CAS-BOT-BC440031  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1980-5-17 2276 Butte 1/2 mile south-east of Hurleton. 600 Comment
  CHSC109117  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2012-2-22 17743 Butte On a large rock, about 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  SEINET10572719  Claytonia perfoliata var. perfoliata Mary Susan Taylor 1981-5-28 Taylor 3807 A Butte Street weed in shaded moist areas in Chico. 61 Comment
  CHSC56071  Claytonia rubra subsp. rubra L. P. Janeway 1987-5-20 2083 Butte North Fork Feather River; at edge of Hwy 70, 3.1 mi northeast of Pulga Bridge. 472 Comment
  UC726582  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Magalia Comment
  CAS-BOT-BC91350  Clematis lasiantha Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC109133  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC110129  Clematis lasiantha L. P. Janeway 2012-3-21 10799 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  POM42868  Collinsia heterophylla C. C. Bruce 1897-04 1846 Butte Little Chico. 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
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC38687  Collinsia sparsiflora var. bruceae Vernon Oswald 1983-3-7 136 Butte Upper Bidwell Park, Chico, near the South Rim Trail ca. 0.15 mi w of the power lines. 128 Comment
  CHSC40882  Collinsia tinctoria Lowell Ahart 1985-5-15 4977 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  JEPS115671  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  CHSC27959  Collinsia torreyi M. S. Taylor 1978-7-19 1768 1/2 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UCD118124  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC42553  Collomia heterophylla Lowell Ahart 1987-5-22 5661 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC478479  Collomia linearis E. B. Copeland 678 Butte Jonesville Comment
  CHSC69048  Collomia tinctoria Lowell Ahart 1997-8-1 7799 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  CHSC31656  Convolvulus arvensis L. Ahart 1978-7-15 1784 Butte Peter Ahart Ranch, Honcut. On dry bare soil near the garden. 50 Comment
  SEINET10474183  Conyza bonariensis Lowell Ahart 1985-1-27 Ahart 4836 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC40893  Cordylanthus tenuis subsp. tenuis Lowell Ahart 1985-7-24 5153 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  RSA537685  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte About 1.5 miles west of Butte Meadows at Thatcher Ridge near junction. 1280 Comment
  CHSC27201  Cornus florida P. Moyer 1971-9-26 11 Butte CSUC Campus. S entrance to Gus Magnolis on bank of Chico Ck. 60 Comment
  CHSC3311  Cornus florida M. Gregg 1966-4-13 65 Butte CSC campus behind the dining hall. Chico. Comment
  CHSC20047  Cornus nuttallii M. S. Taylor 1975-4-17 480 Butte Corner of Arcadian and Sacramento Sts, Chico. Comment
  CHSC61640  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte On the west side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  SBBG119778  Coronilla varia L. Ahart 2006-6-24 12862 Butte E side of dirt rd (Ponderosa Way), on Cohasset Ridge, ca. 4 air mi NE of Cohasset 1113 Comment
  CAS-BOT-BC401860  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC41922  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows. Small bogs near a small stream that flows into Butte Creek. 1450 Comment
  CHSC102504  Cotoneaster lacteus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  SEINET10449701  Crassula aquatica Mary Susan Taylor 1980-5-31 Taylor 2762 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC82231  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS122139  Crassula connata Lowell Ahart 2014-5-2 19425 Butte About one mile northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC46740  Crassula saginoides Lowell Ahart 1978-5-15 1725 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC90630  Crassula tillaea Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. About 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS124167  Crassula tillaea Lowell Ahart 2015-3-26 19967 Butte About 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC47475  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte About 3 miles north-east of the Ponderosa Dam, about 3 miles north of Forbestown. 457 Comment
  JEPS115618  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS98714  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS93989  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte ca. 7 (air) mi. n. Oroville (on bottom of very large vernal pool ca. 0.75 mi. n.w. of the cattle chute on the w. side of Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  UC78399  Cryptantha affinis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET10497259  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4724 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  CHSC33417  Cryptantha simulans R. A. Schlising; M. S. Taylor 1980-7-5 3830 Butte 0.25 miles S of Tehama County line on Hwy 32. 1121 Comment
  CHSC35069  Cryptantha torreyana R. A. Schlising 1981-7-14 4149 Butte NE part of county, near Humbug Summit, at Willow Creek and Meadow. 1950 Comment
  NY16721  Cupressus macnabiana C. B. Wolf 1934-10-5 6160 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET10531465  Cupressus macnabiana A. Arthur Heller 1918-5-5 Heller s.n. 1918 Butte Near Magalia in the yellow pine and Oak belt (Q. Kelloggii) on serpentine, where Cupressus Macabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  SEINET10496608  Cuscuta californica Mary Susan Taylor 1977-6-25 Taylor 1369 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  HSC97157  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of dredger pond, W of N Honcut Creek, about 2.5 mi. N and 2.75 mi. E of Honcut, about 12 mi. SE of Oroville 55 Comment
  JEPS87199  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  CHSC33423  Cuscuta howelliana R. A. Schlising 1981-6-14 4082 c Butte Richvale Vernal Pools. 1/4 mi s of Jct. Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC107566  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UC725368  Cycladenia humilis var. humilis A. A. Heller 1938-7-20 15275 Butte ridge between Inskip and Chaparral 1524 Comment
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  SEINET12122113  Cymopterus terebinthinus var. californicus R. A. Schlising 1980-1 3666 Butte N part of county, along Humboldt Rd, 1.9 mi NE of junction with Hwy 32 at Lomo, Carpenter Ridge Comment
  SEINET11688676  Cynodon dactylon Unknown 1982-1 428 Butte behind President's Mansion, California State University, Chico Comment
  CHSC3916  Cynoglossum grande Wayne O. Baum 1967-3-24 22 Butte Ca 8 mi. e. of the Skyway and Humbug Rd. intersection, on the s. side of Humbug Rd. 365 Comment
  POM72532  Cynoglossum grande C. C. Bruce 1897-03 2092 Butte Little Chico Comment
  CHSC111967  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  JEPS103526  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  SEINET9781676 Image available Cyperus difformis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC107575  Cyperus eragrostis Lowell Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile HOuse Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC112331  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1100535  Cyperus eragrostis Herbert L. Mason 1945-9-19 12736 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  RSA78211  Cyperus eragrostis E. K. Balls, Percy C. Everett 1952-10-14 18217 -a Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 Comment
  CAS-BOT-BC114379  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte N of the state burrow area, W of Pacific Heights Road, ca. 5 mi SW of Oroville. 40 Comment
  JEPS110330  Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS120159  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC68399  Cyperus niger L. P. Janeway 1988-5-30 2715 Butte Canyon of Big Chico Creek; upper Bidwell Park 3.8 mi along Upper Park Road from Wildwood Avenue. Seep above Salmon Hole. 161 Comment
  JEPS120156  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC37082  Cyperus odoratus L. Ahart 1982-10-11 3854 Butte On bottom of deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC113534  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC45124  Cyperus squarrosus Vernon Oswald 1987-6-12 2987 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  CHSC28615  Cyperus strigosus M. S. Taylor 1979-10-3 2222 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from Helltown bridge over Butte Creek, ca. 15 mi e of Chico. 243 Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC68409  Cyperus strigosus L. P. Janeway 1986-9-20 1873 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC2476  Cypripedium fasciculatum W. Fitzwater 1958-3-12 Butte Near Stirling City. ... Field redacted by CHSC, contact the data manager for more information 1463 Comment
  SEINET10470084  Cypripedium fasciculatum Mary Susan Taylor 1981-5-27 Taylor 3803 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CHSC28890  Cystopteris fragilis M. S. Taylor 1980-2-17 2357 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  UC474207  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  CAS-BOT-BC68049  Cystopteris fragilis Lowell Ahart 1981-3-29 2713 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  SEINET10937953  Cystopteris fragilis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4130 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET11716735  Cystopteris fragilis M. S. Taylor, Jokerst, J. D.; Ahart, L. 1980-1 3203 Butte Humboldt Peak 2155 Comment
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 Comment
  CHSC102835  Dactylis glomerata Lowell Ahart 2009-6-19 15916 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  UCR143548  Danthonia americana H. F. Copeland 1931-6-11 1558 Butte Jonesville, Butte Creek Meadows 1829 Comment
  RSA774130  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte North side of the poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC52365  Danthonia unispicata L. P. Janeway 1989-5-17 3257 Butte Along rd to Forbestown Diversion Dam 1.4 mi from Forbestown Rd. Along old logging rd. 861 Comment
  CAS-BOT-BC420352  Darmera peltata Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  CAS-BOT-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC24638  Delphinium gracilentum Keith Lickey 1976-4-21 89 Butte Old hwy 70 ca 500 m n of Big Bend Road at deadend, and 30 m s of Hwy 70. 609 Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC31843  Delphinium hesperium L. Ahart 1978-5-24 1743 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  HSC32401  Delphinium hesperium Gary S. Lester 1974-4-20 103 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CAS-BOT-BC9920  Delphinium nudicaule Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC76956  Delphinium nudicaule Ida Ryan 1893-4-1 Butte Big Chico Creek. Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  JEPS119601  Delphinium patens subsp. patens Lowell Ahart 2012-4-9 17842 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  CHSC53297  Delphinium variegatum R. O. Gilpatrick 1970-3-20 19 Butte Found 1 mile S. on Bruce Rd. from intersection of Humboldt Rd., Chico. N.W. side of road. Comment
  SEINET12099655  Delphinium variegatum Unknown 5 s.n. Butte no further locality Comment
  CHSC24771  Delphinium variegatum subsp. variegatum L. J. Gut 1976-4-23 11 Butte Ca. 30 yds. s of the Skyway, ca. 15 mi e of Chico. 457 Comment
  JEPS115534  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 Butte about 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  CHSC6704  Deschampsia danthonioides Marilyn Lee 1968-4-19 135 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  HSC23363  Deschampsia danthonioides B. Wilson 1968-4-19 168 Butte 2 mi. S of Cherokee, Table Mountain. 549 Comment
  CAS-BOT-BC201741  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  UC589924  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte 2 1/2 mi. s.e. Butte Meadow; Paynes Creek Quad. 1493 Comment
  CAS-BOT-BC388457  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  UCD139211  Dichelostemma capitatum subsp. capitatum Kathy Corson 1969-4-6 2 Butte around 10 miles east of Chico on State Highway 32. Comment
  CAS-BOT-BC501092  Dichelostemma multiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UCD139270  Dichelostemma volubile H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 5 miles south of Oroville. Comment
  CHSC107244  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte Shade of trees, just north of the small wash, on the weest side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CAS-BOT-BC209040  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 Butte On the bottom of teh pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-est of Oroville. 36 Comment
  CHSC97734  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD63992  Digitaria sanguinalis L. E. Hazeltine 1916-7-10 Butte Chico. Comment
  UCD64139  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On the bottom of North Honcut Creek, ca. 2.7 mi. NE of Honcut. 50 Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  CAS-BOT-BC151921  Diplacus douglasii A. A. Heller 1921-3-27 13534 Butte On the steep slope above Butte Crek near the bridge on Honey Run Road Comment
  CAS-BOT-BC150277  Diplacus grandiflorus Grace Kermode 1899-6-17 s.n. Butte Chico Comment
  CHSC14058  Diplacus kelloggii J. Moore 1974-5-7 Butte Collected ca. 1 mi n of Jarboe Gap, on Hwy 70, n of Oroville. 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
  CAS-BOT-BC153218  Diplacus kelloggii A. A. Heller 1921-3-27 13533 Butte Above Butte Creek near the bridge on the Honey Run road Comment
  CAS-BOT-BC153220  Diplacus kelloggii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 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
  CHSC52117  Dodecatheon clevelandii var. patulum Gary McGrath 1977-3-3 8 Butte Ca. 10 m e of Cohasset Road, 10 km n of Chico. 75 Comment
  CHSC13891  Dodecatheon hendersonii J. F. Goodwin 1972-3-11 182 Butte 0.5 mi se on Oregon Gulch Road from its intersection with Cherokee Road, Table Mountain, Oroville; sw side of road. Comment
  UCD118955  Dodecatheon hendersonii M. R. Nichols 1975-4-23 5 Butte 5.6 mi e of Chico on Skyway from Hwy 99. 304 Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  SD111949  Downingia bicornuta B. Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3290 Butte Peter Ahart Ranch, ca. 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  JEPS104200  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC26279  Downingia ornatissima J. H. Moyer 1975-5-6 23 Butte In ditch along Hiway 99 ca. 17.6 km. se of Chico, near the junction to Hiway 149. 65 Comment
  CHSC27490  Downingia pulchella M. S. Jaeckel 1974-4-23 34 Butte Found locally in muddy places and vernal pools, Chico. Comment
  CAS-BOT-BC41348  Draba verna Lowell Ahart 1983-5-7 3967 Butte Honcut. Peter Ahart Ranch. About 1.5 miles north and 2.125 miles esat of Honcut. 50 Comment
  CHSC63633  Draperia systyla B. Castro; R. Zebell 1989-7-20 326 Butte Off the S end of Walker Plains, on steep W-facing slopes off W side of the Oro-Quincy Hwy. 1402 Comment
  CHSC94338  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard ... Field redacted by CHSC, contact the data manager for more information 1569 Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC102981  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC90204  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  CHSC21254  Dysphania ambrosioides M. S. Taylor 1975-10-3 933 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC75995  Dysphania ambrosioides Lowell Ahart 1999-8-22 8183 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico 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
  CHSC66437  Dysphania pumilio Vernon H. Oswald; Lowell Ahart 1996-6-10 7738 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET10552416  Echinochloa colona Lowell Ahart 1977-8-14 Ahart 1548 Butte On damp soil in a slough. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CAS-BOT-BC197097  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC23131  Echinochloa crus-galli M. S. Taylor 1975-10-3 931 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC42908  Echinochloa crus-galli Lowell Ahart 1987-7-3 5757 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  UCD60909  Echinochloa crus-galli L. Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC445584  Echinodorus berteroi Lowell Ahart 1972-7-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC445585  Echinodorus berteroi Lowell Ahart 1981-7-26 3014 Butte 1/2 mi. south of Gray Lodge Waterfowl Management Headquarters, southwest of Gridley. 35 Comment
  SEINET10474220  Eclipta alba Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5147 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC94489  Elaeagnus angustifolia Lowell Ahart; Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  JEPS110471  Elaeagnus angustifolia Lowell Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 20 Comment
  CHSC115337  Elatine Lowell Ahart 2015-4-24 20067 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS124168  Elatine Lowell Ahart 2015-3-26 19964 Butte About one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  UC1101557  Elatine ambigua Herbert L. Mason 1946-8-15 13051 Butte near caretaker's house (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  JEPS98417  Eleocharis acicularis Lowell Ahart 2000-6-5 8447 Butte On the N margin of a large wash, ca 100 yards W of the road crossing, Peter Ahart Ranch, ca 1 3/4 miles N and 1 1/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 36 Comment
  UC398894  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville 1550 Comment
  SEINET7583520 Image available Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CAS-BOT-BC113452  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Ca. 1 1/2 mi SE of Bald-Mountain, 3/4 mi W of Oak Point, ca. 4 mi NE of Stirling City. 1500 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC113374  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, Honcut, ca 2.5 mi N and 1/4 mi E of Honcut. 50 Comment
  CHSC31668  Eleocharis engelmannii L. Ahart 1979-6-2 1911 Butte On the bottom of a large wash in one of the farmed fields. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  CAS-BOT-BC112789  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way. 550 Comment
  CDA38989  Eleocharis quinqueflora L. Ahart 2000-5-3 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CAS-BOT-BC112032  Eleocharis suksdorfiana M. S. Taylor 1978-6-24 1668 Butte In Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows. 1371 Comment
  CHSC68450  Eleocharis suksdorfiana L. P. Janeway 1988-7-29 3113 Butte Meadow on south side of Butte Creek 1/2 mi west of Cherry Hill. 1402 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC107432  Elymus caput-medusae L. P. Janeway 2011-6-29 10404 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC8205  Elymus caput-medusae D. McClain 1969-5-1 65 Butte 10 yds. s. of Upper Bidwell Rd., 1/2 mi. e. of Salmon Hole, Upper Bidwell Park, Chico. 76 Comment
  UCD61569  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC99759  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CHSC34035  Elymus stebbinsii subsp. septentrionalis L. Ahart 1981-7-7 2928 Butte Hillside, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  JEPS110200  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC44912  Elytrigia intermedia subsp. intermedia Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  CAS-BOT-BC227813  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico Comment
  SEINET10453215  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1977-6-25 Taylor 1375 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET6635801 Image available Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte end of Nelson Bar Road, ca. 1 mi S on Kunkle Reservoir, ca. 3 mi S of Paradise; near boat ramp 302 Comment
  SEINET6635812 Image available Epilobium brachycarpum H. F. Copeland 1923-1 404 Butte Nelson Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC105515  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC31784  Epilobium densiflorum L. Ahart 1974-7-19 551 Butte Along banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UC873375  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico meadows 1219 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SBBG28789  Equisetum hyemale E. B. Copeland 1929-7-6 Butte Jonesville Comment
  SEINET10899891  Equisetum hyemale var. affine Mary Susan Taylor 1978-7-19 Taylor 1731 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC57257  Equisetum laevigatum Lowell Ahart 1983-4-22 3937 Butte Peter Ahart Ranch, banks of North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC49238  Eragrostis cilianensis Vernon Oswald 1987-6-12 2989 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  CAS-BOT-BC213615  Eragrostis mexicana subsp. virescens John Thomas Howell 1961-9-22 36787 Butte North Fork of Feather River NE of Pulga, Sierra Nevada Comment
  CAS-BOT-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  JEPS103286  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  UCD65676  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 15 Comment
  JEPS108151  Eremogone cliftonii L. P. Janeway, C. Christofferson, S. Mackey Hillaire, M. Brown 2005-5-11 8388 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.7 km east of Lockerman Creek and 1.2 km east-northeast of its confluence at Camp Creek 1234 Comment
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  UC600729  Ericameria bloomeri H. F. Copeland 1920-8-25 383 Butte Jonesville Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC113979  Erigeron canadensis Lowell Ahart 2014-11-17 19910 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC26623  Erigeron canadensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC37079  Erigeron canadensis L. Ahart 1982-9-9 3770 Butte Ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UC1594578  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  SFV11413  Erigeron divergens M. L. Vincent 1964-4-9 544 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  CAS-BOT-BC295166  Erigeron inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville 1828 Comment
  SEINET10938074  Erigeron inornatus Mary Susan Taylor 1981-6-7 Taylor 3860 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC295468  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  CAS-BOT-BC295951  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC40479  Erigeron strigosus Lowell Ahart 1985-7-24 5155 Butte Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  CHSC113805  Eriodictyon californicum M. Ocken 2011-4-25 Butte Butte Creek Ecological Preserve. 106 Comment
  CHSC50674  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  UCD119297  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC259401  Eriogonum luteolum A. A. Heller 1913-9-16 11142 Butte Hills near Big Chico Creek, east of Chico Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  SEINET8386144  Eriogonum marifolium E. B. Copeland 1930-7-12 410 Butte above Jonesville. 2000 Comment
  CAS-BOT-BC269841  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  SEINET11934611  Eriogonum nudum var. pubiflorum L. P. Janeway 1988-1 2967 Butte Pulga quad. nr. roadside into French Creek .6 mi S of Coyote Gap. Shaley SE-faceing ridge outcrop 1219 Comment
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. Comment
  CHSC41366  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-7-11 4136 Butte NE part of county, serpentine outcrop along Coyote Gap Road, ca. 0.5 mi S of Coyote Gap. 1219 Comment
  CHSC69661  Eriogonum umbellatum var. ahartii Vernon Oswald; Lowell Ahart 1997-9-9 8857 Butte Northeast of Magalia near the gravel pit on Jordan Hill Rd. 1.4 road mi east of the Whiskey Flat Bridge over the West Fork Feather River, 0.7 air mi northwest of Sawmill Pk. Lookout. 719 Comment
  CHSC92285  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8515 Butte Northern High Sierra Nevada. Plumas National Forest; small knob of serpentine between upper end of Magalia Reservoir and Hollywood Drive, Magalia. 741 Comment
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Feb 20 2019
  CAS-BOT-BC262206  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC328  Eriophyllum lanatum var. grandiflorum 1954-5-30 Butte Paradise. 548 Comment
  UC600403  Eriophyllum lanatum var. grandiflorum H. F. Copeland 1931-6-10 Butte gulch draining into Colby Canyon; Jonesville 1524 Comment
  CHSC48453  Erodium botrys Vernon Oswald 1984-3-7 1089 Butte Upper Bidwell Park, Chico, beside the creek trail w of Alligator Hole. 91 Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  RSA715577  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD103168  Erodium cicutarium A. A. Heller 1914-4-21 11312 Butte Chico. Comment
  CHSC71180  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte About 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UCD127488  Eryngium castrense W. R. Powell 1968-4-22 1466 Butte 3 miles north of Honcut. 32 Comment
  SEINET12118292  Eryngium vaseyi var. castrense Unknown 1936-1 13044 Butte along Mud Creek, near Chico Comment
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CHSC25056  Erythranthe geniculata G. N. Steger 1972-4-15 Butte Located at base of Coal Creek Falls, Coal Canyon, North Table Mt., 4 mi n of Cherokee Rd. and 1 1/2 mi nw from Cherokee Rd. 304 Comment
  CHSC27272  Erythranthe glaucescens P. Moyer 1972-4-16 173 Butte CSUC Campus. S. bank Chico Ck., e of Warner St. Bridge. 60 Comment
  CHSC38700  Erythranthe glaucescens Vernon Oswald 1983-3-9 138 Butte Upper Bidwell Park, Chico, on the north clope ca. 600 ft w of the power lines abd 1600 ft n of the Upper Park Rd. 152 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  SEINET8362196  Erythranthe moniliformis C. E. Wickstrom 1964-12-9 61 Butte at Butte Meadows approx. 160 ft. sw of where [the] stream goes under Scout Rd. ca. 1.5 mi. from furn off Humboldt Rd.; Chico. Comment
  CHSC49007  Erythranthe primuloides Vernon Oswald 1983-7-6 823 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  SEINET8399967  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  POM298049  Erythranthe pulsiferae A. A. Heller 1915-4-12 11805 Butte Near Cohasset. Comment
  CHSC31344  Erythronium multiscapideum Leslie Steidl 1980-4-13 17 Butte Ca. 23 mi ene of Oroville, ca. 0.7 mi nne of Lumpkin Rd, ca. 0.25 mi w of Nutmeg Creek, ca. 5 yd e of a dirt road. 719 Comment
  CHSC32742  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-10 3526 Butte S side of Private rd, ca. 1/8 mi e of its jct with Ponderosa Way (Rim Rd), ca. 4 mi n of Jarbo Gap on Hwy 70, ca. 19 air mi n of Oroville. 914 Comment
  CHSC87535  Erythronium multiscapideum R. D. Fischer 2004-3-22 91 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and parking area for 10 Mile House Road 300 ft down rd. 457 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 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
  HSC32620  Eschscholzia caespitosa Kitsy Kelly 1974-4-20 23 Butte Table Mtn. Volcanic area Comment
  JEPS117217  Eschscholzia caespitosa Lowell Ahart 2010-5-16 16696 Butte Basalt cliffs about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  OBI11791  Eschscholzia californica Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi N of Durham 46 Comment
  UC1303043  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte about 4 mi below Paradise (along the Neal road) Comment
  SEINET10476227  Eschscholzia lobbii Mary Susan Taylor 1975-4-26 Taylor 509 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC43617  Eucephalus breweri Vernon H. Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak. 2148 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 Comment
  CHSC612  Euphorbia crenulata I. Huffman 1930-5-20 Butte Paradise. 548 Comment
  RSA0020538  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76deg.) of Biggs 58 Comment
  SEINET10453823  Euphorbia peplus Mary Susan Taylor 1975-4-6 Taylor 433 Butte Chico. 52 Comment
  CHSC96930  Euphorbia spathulata Lowell Ahart 2007-6-3 13974 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC113429  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC108980  Festuca bromoides Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte On the north side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  SEINET10508573  Festuca californica Lowell Ahart 1985-5-15 Ahart 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10560623  Festuca elmeri A. Arthur Heller 1902-5-16 Heller 5562 Butte Marysville Buttes (rocky slope of East Butte) Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC113277  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  JEPS106262  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  HSC95791  Festuca subulata L. Ahart 1997-7-11 7756 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  SD122517  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, steep roadcut 700 Comment
  UCD80548  Festuca subuliflora CNPS SN Foothill Team 2006-6-6 Survey Butte BLM, Parcel NE of Paradise. Comment
  RSA715561  Filago gallica R. E. Riefner 2005-5-7 11787 Butte North Huncut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
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Dec 11 2012
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  CHSC33950  Fragaria virginiana M. S. Taylor; L. Ahart 1981-8-15 4190 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CAS-BOT-BC62943  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11881 Butte Canyon of Chico creek 5 mi. e. of Chico. This type was collected about 50 mi. to the s., probably along the Bear River. Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  SD10094  Frangula rubra E. B. Copeland 1931-7-28 Butte Jonesville; dry ridge west of North Willow Creek 1650 Comment
  CHSC29098  Fraxinus dipetala M. S. Taylor; J. D. Jokerst 1980-4-18 2522 Butte On dry bluff, on e side side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC20124  Fraxinus latifolia M. S. Taylor 1975-5-6 556 Butte Along s edge of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  SDSU19718  Fritillaria eastwoodiae Sean Ryan 2010-4-17 36 Butte Off hwy 70, along east side of Old Truex Road, approximately 90 yards SW of the intersection of Truex Road and Trevor Road, just north of Lake Oroville. North facing steep roadcut. 302 Comment
  CAS-BOT-BC505286  Fritillaria micrantha Lowell Ahart 1983-4-14 3933 Butte On east side of Woodleaf Creek above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  SEINET10469532  Fritillaria phaeanthera Mary Susan Taylor 1976-3-16 Taylor 1028 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset Comment
  CHSC101257  Galium aparine Lowell Ahart 2009-4-17 15548 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC4070  Galium aparine H. E. Lindahl 1967-3-25 5 Butte 1/2 mi. S and 100 yds. W of forks of dry creek Pentz. 152 Comment
  CHSC65585  Galium aparine L. P. Janeway 1995-6-6 4772 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northest of the falls of Feather Falls. 1054 Comment
  CHSC82424  Galium aparine Lowell Ahart 2002-5-7 9630 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC29792  Galium bolanderi M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2876 Butte Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  JEPS52659  Galium bolanderi Lauramay T. Dempster 1964-7-24 4047 Butte Nimshew 731 Comment
  UC1143083  Galium bolanderi J. E. Sowder 1933-8-15 130 Butte 1 1/2 mi w mouth of Flea Valley Creek (on point of ridge); Bidwell Bar Quadrangle Comment
  SBBG7301  Galium bolanderi H. and M. Dearing 1938-6-21 2056 Butte 21 mi NE of Chico Comment
  UCD121612  Galium bolanderi Harriet Sindel 1970-5-10 8 Butte Cohasset Highway 11.5 miles northeast of intersection with Keefer Lane, Cohasset. 609 Comment
  CHSC54348  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  SEINET12318317  Galium nuttallii D. G. Bendix 1978-1 8 Butte Butte Creek Canyon 5.4 km E of junction of Honey Run Rd with Skyway, 10 km E of Chico, ca 10 m NE of 100 Comment
  UC1562420  Galium parisiense Lowell Ahart 1990-6-16 6512 Butte se side of dirt road near Forbestown Generator (se side of Forbestown Reservoir) 487 Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  CHSC1615  Galium porrigens var. tenue M. Roberson 1956-4-9 Butte SW of Paradise. 426 Comment
  CHSC45083  Galium porrigens var. tenue Chris Bradley; C. A. Bradley 1988-4-26 2 Butte Honey Run Rd., ca. 100 m from Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  CHSC52130  Galium porrigens var. tenue Paul K. Kirk 1981-3-10 4 Butte N side of Cohasset Rd., 50 m NE of its jct. with Rock Creek Rd., 14.5 km N of Chico. 135 Comment
  CHSC30896  Galium sparsiflorum subsp. glabrius M. S. Taylor 1980-9-12 3332 Butte W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk W of the hwy on dirt road. 975 Comment
  JEPS117919  Galium triflorum L. P. Janeway 2008-6-22 9430 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  SEINET10500650  Galium triflorum Mary Susan Taylor 1978-7-19 Taylor 1740 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562433  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte below high-water line Lake Oroville (e of the Enterprise boat launch area, about 1/8 mi nw of the Enterprise Bridge across Lake Oroville) 259 Comment
  CHSC21937  Garrya fremontii Robert A. Schlising 1974-9-17 3159 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC643  Garrya fremontii M. Roberson 1956-4-9 Butte SW of Paradise along Skyway 426 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  UC1122706  Garrya fremontii J. E. Sowder 1933-7-14 112 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  SEINET10453491  Garrya fremontii Lowell Ahart 1985-1-27 Ahart 4835 Butte On damp red soil on a steep slope a little below the road, east of Magalia. Comment
  SEINET12137328  Garrya fremontii M. S. Taylor, Pierce, E. 1981-1 3375 Butte both sides of Cohasset Hwy, ca 3 mi S of Cohasset Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  UCD80552  Gastridium phleoides CNPS SN Foothill Team 2005-5-3 SNFN 0198 b Butte City of Chico, Doe Mill Meadowfoam Preserve, Ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CAS-BOT-BC278702  Gastridium ventricosum Lowell Ahart 1980-5-25 2344 Butte Along Ponderosa Way 500 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 Comment
  CHSC28526  Gayophytum heterozygum M. S. Taylor 1979-8-4 2175 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  UC107803  Gayophytum heterozygum D. Cleveland 1882-8-4 Butte West Branch Comment
  CHSC31051  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10454851  Gentianopsis simplex Mary Susan Taylor 1977-8-17 Taylor 1495 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC55799  Geranium core-core Vernon H. Oswald; Lowell Ahart 1991-11-2 4884 Butte North end of Long Bar Rd., just south of the boundary of the State Recreation Area on the south side of Thermalito Diversion Pool, near Oroville. 97 Comment
  CHSC110102  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. 658 Comment
  CHSC93994  Geum macrophyllum R. D. Fischer 2004-6-20 766 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found along stream edge downstream of pond. 1371 Comment
  CAS-BOT-BC459403  Geum macrophyllum E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  SEINET12331812  Gilia capitata L. Ahart, Ahart, P. 1984-1 4748 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  RSA713003  Gilia capitata subsp. pedemontana L. Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  UC880104  Gilia capitata subsp. pedemontana A. A. Heller 1915-5-17 11877 Butte 5 mi e Chico (along Chico Creek); , e of Chico Comment
  SEINET10496752  Gilia leptalea Mary Susan Taylor 1975-8-31 Taylor 883 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  POM74092  Gilia tricolor C. C. Bruce 1897-04 1925 Butte [No locality information provided] Comment
  CHSC3229  Ginkgo biloba Virginia Hagaman 1966-5-5 165 Butte Chico State College Campus. Comment
  CAS-BOT-BC266583  Githopsis pulchella A. A. Heller 1937-5-31 s.n. Butte Just W of Jarboe Pass on the Feather River Highway about 20 miles from Oroville 609 Comment
  UC727174  Githopsis pulchella subsp. campestris A. A. Heller 1941-5-9 16106 Butte Clark Road, foot of the Paradise grade Paradise Grade Comment
  UCSB44143  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road from Hwy 70 Comment
  CHSC113543  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC110134  Glyceria declinata L. P. Janeway; B. Castro 2012-4-15 10805 Butte Northern Sierra Nevada Foothills. North Table Mountain; along the main drainage to the Fern Falls branch of Coal Canyon about 0.6 creek km east of the Falls. 381 Comment
  UCD80064  Gnaphalium palustre CNPS SN Foothill Team 2005-5-4 SNFN 0199 b Butte City of Chico, Bidwell Ranch, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  POM168292  Goodyera oblongifolia Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  JEPS98981  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  CHSC109773  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC45678  Hedypnois cretica Vernon Oswald 1986-4-10 1066 Butte Dunstone Dr. 0.1 mi n of LaPorte Rd. Roadside. Near Wilson Creek. 41 Comment
  CAS-BOT-BC306292  Hedypnois cretica Lowell Ahart 1980-4-28 2107 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC306540  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 Comment
  CHSC38358  Helenium puberulum Vernon Oswald 1983-6-14 680 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 100 ft e of Diversion Dam Parking Area L. 134 Comment
  UC179688  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC305518  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CHSC102400  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  JEPS115652  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC305847  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 mile north of Highway 162, about 2 1/2 miles north-west of Biggs 28 Comment
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CAS-BOT-BC314995  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  SD5645  Hemizonella minima E. B. Copeland 1931-7-12 Butte On bare ridge between Jones and NOrth Willow Creeks. 1700 Comment
  CHSC66837  Hemizonia congesta subsp. luzulifolia Vernon H. Oswald 1996-8-29 8247 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. (Collected at the northeast corner of Tract 5, Sanctuary II). 32 Comment
  CHSC45571  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1978-6-17 1778 Butte Along roadways, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC99004  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2008-5-21 14772 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC57220  Hesperevax acaulis var. acaulis Vernon H. Oswald; Lowell Ahart 1992-3-24 4888 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.1 mi north of Burma Rd. 76 Comment
  JEPS106224  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC44869  Hesperevax acaulis var. robustior Lowell Ahart 1979-5-29 1907 Butte Near a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC90476  Hesperevax acaulis var. robustior Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  CHSC24954  Hesperevax caulescens T. F. Burnham 1976-4-20 12 Butte E side of Broyles Road, .7 mi n of Cana Pine Creek Road and Broyles Road intersection. 97 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CHSC37687  Hesperolinon micranthum M. S. Taylor 1981-5-21 3769 Butte S side of Concow Rd, 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  UC478502  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  SEINET10493821  Hesperolinon micranthum Mary Susan Taylor 1981-5-21 Taylor 3769 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  UC1586511  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1991-8-28 4851 Butte sw side of Hwy 162 ca 3.5 mi nnw Biggs; Rice Experiment Station 30 Comment
  SEINET10469503  Heteranthera limosa Lowell Ahart 1991-7-21 Ahart 6669 Butte About 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  UCD13377  Heteranthera rotundifolia Sue Nichol 1996-7-1 s.n. Butte Biggs Rice station; near Hwy 162. North of Butte city. Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC42724  Heterocodon rariflorum Lowell Ahart 1987-5-12 5652 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC96960  Heterocodon rariflorum Lowell Ahart 2007-6-12 14074 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC38643  Heteromeles arbutifolia Vernon Oswald 1983-6-9 656 Butte Upper Bidwell Park, Chico, near Parking Area R (2.3 mi e of the power lines). 228 Comment
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA0072450  Heteromeles arbutifolia L. Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yards south of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile west of Highway 32, about 10 miles northeast of Chico. 243 Comment
  SEINET7085239  Heteromeles arbutifolia Steven R. Hill 2010-7-17 38550 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  SEINET11910533  Heteromeles arbutifolia Unknown 1977-1 27 Butte ca 10 mi NE of Chico, 1.1 mi E of Ten-mile and Hwy 32. Paradise Quad. 15' E central border 341 Comment
  CAS-BOT-BC310280  Heterotheca grandiflora Lowell Ahart 1986-11-7 5422 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  UCD16139  Heuchera micrantha var. pacifica Maura Cullinane 1983-5-29 24 Butte California. Butte County: take Forest Hill Rd. ramp and go east off I 80 to Mosquito Ridge Rd., drive 13.5 mi. Site #7. 1066 Comment
  JEPS94304  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in snow Meadow, about 1/4 mile east of Table Mountain, about 8 air miles northeast of Stirling City. 1524 Comment
  CAS-BOT-BC319753  Hieracium argutum Lowell Ahart 1983-7-24 4210 Butte Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  CHSC25262  Hoita macrostachya M. S. Taylor 1977-6-27 1394 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  CAS-BOT-BC280712  Holcus lanatus John Thomas Howell; Gordon H. True 1967-6-11 42562 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC49552  Holcus lanatus Vernon Oswald 1983-6-22 754 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. On the edge of a stream in meadow. 1264 Comment
  JEPS110329  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC46274  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1989-5-1 3755 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the dike road and Butte Creek, ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC101672  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC56632  Hordeum marinum subsp. gussoneanum J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  SEINET10960312  Hordeum murinum Ernenwein 1983-4-20 ERNENWEIN 141 Butte Open grassy field in between forks of Humboldt Rd. Ca. 1.7 miles E of US Hwy 99 E of Chico. Shallow soil on volcanic rock. Comment
  CHSC101126  Hordeum murinum subsp. leporinum Lowell Ahart 2009-5-8 15671 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10970306  Horkelia fusca subsp. parviflora Mary Susan Taylor 1982-6-24 Taylor 4742 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC536263  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  JEPS120934  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte About 50 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC691  Hydrophyllum occidentale 1947-6-1 Butte Stirling City cut-off to Forest Ranch 701 Comment
  RSA420904  Hydrophyllum occidentale J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CAS-BOT-BC400832  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  CHSC38468  Hypericum anagalloides Vernon Oswald 1983-5-31 595 Butte Upper Bidwell Park, Chico, 750 ft n of Upper Park Rd. and 2600 ft w of the power lines. 121 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CHSC102378  Hypericum perforatum Lowell Ahart 2009-5-30 15783 Butte Northeast of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET10472156  Hypericum perforatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4072 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  JEPS114712  Hypochaeris glabra Lowell Ahart 2008-5-21 14767 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  CAS-BOT-BC133562  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  RSA135944  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20697 Butte 7 miles northeast from Pentz Trading Post on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC87550  Iris pseudacorus R. D. Fischer 2004-3-29 73 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  UCD138822  Iris tenuissima W. R. Powell 1968-5-17 1507 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  JEPS127197  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC29111  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-5-15 2635 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  CHSC30306  Isoetes nuttallii M. S. Taylor 1980-5-27 2678 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CAS-BOT-BC61869  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte in Valley Grassland, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99 68 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CHSC84205  Isolepis setacea Lowell Ahart 2003-6-30 10337 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  JEPS114774  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  CHSC61932  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte On the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CHSC96945  Juncus acuminatus Lowell Ahart 2007-7-7 14263 A Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  CHSC28657  Juncus articulatus J. D. Jokerst 1979-10-12 375 Butte 1.0 mi. N. E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  CHSC96973  Juncus articulatus Lowell Ahart 2007-7-11 14286 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CDA39167  Juncus articulatus G. D. Barbe, T. C. Fuller 1982-6-14 3677 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC94836  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC94889  Juncus bufonius var. bufonius Lowell Ahart 2006-9-28 13380 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  JEPS119699  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  JEPS113832  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  RSA755033  Juncus effusus var. pacificus L. Ahart 2009-6-30 15980 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CHSC69058  Juncus ensifolius Lowell Ahart 1997-8-1 7763 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  CHSC96955  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 762 Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 Butte on the bottom of Little Kimshew Creek; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  RSA795245  Juncus laccatus L. Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 air miles northeast of Clipper Mills. 1134 Comment
  CHSC47561  Juncus leiospermus Lowell Ahart 1984-4-6 4543 Butte About 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  SEINET10472450  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2560 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  RSA0000294  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca 2 mi N and 1/2 m E of Honcut, between Marysville and Oroville. 50 Comment
  CHSC30361  Juncus leiospermus var. leiospermus J. D. Jokerst 1980-5-15 699 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Hwy. 487 Comment
  CHSC93493  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 339 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  JEPS104444  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC41288  Juncus nevadensis S. C. Morey 1983-7-21 495 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC49621  Juncus orthophyllus Vernon Oswald 1987-7-16 3130 Butte Coon Creek just w of Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. On the edge of the creek where it crosses meadow. 1539 Comment
  JEPS121384  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock Comment
  SEINET10472342  Juncus tenuis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4734 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC44526  Juncus trilocularis Lowell Ahart 1988-6-29 6096 Butte Along a small wash south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC47577  Juncus uncialis Lowell Ahart 1983-4-10 3931 Butte On the sides of small vernal pools, near the steel power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 60 Comment
  CDA30217  Juncus usitatus L. Ahart 2009-7-4 15999 Butte On the side of a large shalow pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley Comment
  JEPS87130  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte ca. 2 mi. w. Oroville Dam (near Longs Bar Monument, n. side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
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Nov 1 2009
  CHSC111417  Juniperus lusitanica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Twig from a very large tree, on dry excellent soil, Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  CAS-BOT-BC235678  Keckiella breviflora var. glabrisepala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC44722  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-17 251 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  UCD123760  Keckiella breviflora var. glabrisepala Joseph M. DiTomaso 1976-5-23 471 Butte Lake Oroville, peninsula at south end. 274 Comment
  SEINET10869775  Kelloggia galioides Mary Susan Taylor 1978-7-18 Taylor 1678 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  JEPS115352  Kickxia elatine Lowell Ahart 2009-7-3 15991 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC113443  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC31920  Lactuca serriola M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3377 Butte On road embankment, e side of Lumpkin Rd, ca. 200 ft n of Macabes Creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. 457 Comment
  CHSC38366  Lactuca serriola Vernon Oswald 1983-6-27 773 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  JEPS19936  Lagophylla glandulosa C. C. Parry 1881-11-1 Butte Chico Comment
  CAS-BOT-BC341298  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC42274  Lamium amplexicaule L. P. Janeway 1987-4-14 2004 Butte Oroville, Thermalito Forebay North Picnic Area. 70 Comment
  CHSC101984  Lasthenia fremontii Linda Osborne 1980-4-10 3 Butte Chico. Ca. 100 m SE of Notre Dame Blvd., 200 m NE of Skyway. Comment
  JEPS119708  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  POM55153  Lasthenia fremontii A. A. Heller, H. E. Brown 1902-5-2 5441 Butte Near Butte City Comment
  CHSC2426  Lasthenia gracilis R. Carter 1965-3-13 162 Butte On North Table Mt., these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds from rim. 304 Comment
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Jan 19 2011
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  CDA42904  Lathyrus latifolius L. Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC111151  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET10937186  Lathyrus nevadensis subsp. lanceolatus Mary Susan Taylor 1978-7-19 Taylor 1732 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CAS-BOT-BC213291  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  SEINET12161677  Lathyrus sulphureus Unknown 1977-1 54 Butte W side of Vilas Rd, ca .3miNE of jct of Cohasset Hwy and Vilas Rd, Cohasset, Paradise Quad. seebelow 945 Comment
  CHSC109080  Laurus nobilis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CAS-BOT-BC321762  Layia fremontii E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC368  Layia fremontii P. Delaplane 1965-3-9 3 Butte Ca. 1/4 mi. S.W. of Chico Municipal Airport on Cohasset Rd. 50 yds. from E. side of road. 30 Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  UCD63609  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs. Comment
  CDA32427  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs 0 Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC3354  Lepechinia calycina Robert L. Smith 1966-5-20 55 Butte Paradise, 5 miles SW of Postorrice. Comment
  UC1124466  Lepechinia calycina A. E. Wieslander 1933-6-24 325 Butte Keefer Ridge 304 Comment
  CHSC48320  Lepidium appelianum Vernon Oswald 1987-5-3 2365 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CAS-BOT-BC89884  Lepidium nitidum James Jokerst 1985-3-24 2171 Butte Near Serpentine Point. 547 Comment
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  RSA726665  Lepidium nitidum var. nitidum Richard Halse 2002-3-27 6153 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  UCR148775  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise 335 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 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
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  CHSC1285  Leptosiphon filipes J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 76 Comment
  CHSC62775  Leptosiphon filipes L. P. Janeway 1993-6-9 4376 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. 621 Comment
  CHSC58937  Leptosiphon harknessii Lowell Ahart 1992-7-29 6887 Butte Near Coon Hollow Creek, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UCD118761  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville, along Butte Creek. 1500 Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  RSA32020  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  CAS-BOT-BC56386  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70 1158 Comment
  CAS-BOT-BC56387  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte along a small branch of French Creek, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CHSC35976  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Rag Dump 5, ca. 2 mi n of Flea Mt., ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  UCD101590  Lewisia cantelovii M. Vincent 1968-6-10 853 Butte 1.5 miles south of Rock Creek Dam. Comment
  CHSC29375  Lewisia nevadensis R. A. Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC27995  Ligusticum californicum M. S. Taylor 1978-7-18 1679 Butte On w side of Hwy. 32 on edge of Yellow Pine Forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  POM182757  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CAS-BOT-BC133050  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UC869472  Limnanthes alba A. A. Heller 1917-4-15 12674 Butte ten mi n Chico 64 Comment
  CHSC111315  Limnanthes alba Julie Kierstead Nelson 2013-4-16 2013 -005 Butte 5 mi. N of Shasta College, NE of Redding, in rural residential area, intersection of Portero and Paso Robles; UTM Zone 10N, 557750E 4500503N. 199 Comment
  SEINET10495210  Limnanthes alba Mary Susan Taylor 1978-5-7 Taylor 1600 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC88867  Limnanthes alba subsp. alba Christine Hantelman 2000-5-3 87 Butte In drainage cut on north side Wookey Road, 0.5 mi east of Meridian. 1920 Comment
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Apr 7 2008
  SBBG17309  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Rd near Table Mtn Comment
  CHSC32591  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1981-3-21 1257 Butte Initial slopes delineating the beginning of the foothills, ca. 0.5 mi N of Horseshoe Lake. Comment
  SFV2131  Limnanthes striata M. L. Vincent 1961-3-29 33 Butte Sacramento Valley 1 mile west of Chico. On Highway to Oroville. 60 Comment
  CHSC72401  Limnophila X ludoviciana Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9674 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  CDA6277  Limnophila X ludoviciana Vernon Oswald, Lowell Ahart & Barbara Ertter 1998-10-22 9674 Butte Northeast corner of Hamilton and Riceton Roads, Rice Experiment Station northwest of Biggs. Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  SEINET10496801  Linanthus filipes Mary Susan Taylor 1980-5-27 Taylor 2677 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  CHSC43218  Linnaea borealis var. longiflora L. P. Janeway 1987-6-19 2225 Butte Along Sly Cr near road crossing, 2.1 mi from the Challenge-LaPorte Rd towards the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CAS-BOT-BC111974  Lipocarpha micrantha Lowell Ahart 1974-8-14 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  JEPS95811  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC111975  Lipocarpha micrantha Lowell Ahart 1969-9-9 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC143449  Listera convallarioides Mrs. R. M. Austin July 1896 839 Butte Colby Comment
  POM196098  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  UC1135296  Lithocarpus densiflorus var. echinoides J. E. Sowder 1933-8-17 131 Butte 2.5 mi n and 0.75 mi w Bear Ranch Hill; Lassen National Forest, Bidwell Bar Quad. 1219 Comment
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC6294  Lithophragma parviflorum L. Lyons 1967-4-27 Butte On south side of Rcihardson's Spring Rd. 1.8 mi e of entrance on n Cohasset Rd. 3.5 mi from Chico. 76 Comment
  CHSC96642  Lithophragma parviflorum var. trifoliatum Lowell Ahart 2007-3-28 13602 Butte By Jurassic-Triassic metavolcanic rocks, Peter Ahart Ranch, about 2 1/4 miles north and 2 1/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  UC137062  Lithophragma parviflorum var. trifoliatum Mrs. R. M. Austin Apr. 1896 263 Butte Bluffs Little Chico Creek Little Chico Creek; Bluffs Little Chico Creek Comment
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC60576  Lithospermum californicum Vernon H. Oswald; Lowell Ahart 1993-4-19 5277 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. North-facing slope on the S side of Rattlesnake Creek. 701 Comment
  CHSC4361  Lolium perenne M. Hillier 1966-5-30 Butte Chico. N.W. side of CSC gym by ski jump. Field. Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  POM132576  Lomatium dasycarpum subsp. tomentosum A. A. Heller, H. E. Brown 1902-5-14 5552 Butte Berry Canyon (near Clear Creek) Comment
  CHSC42616  Lomatium macrocarpum Vernon Oswald 1985-4-3 1698 Butte Concow Rd. n of Lake Concow. 914 Comment
  UC1337980  Lomatium utriculatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte N. Fork Feather R. at w. side Pulga Bridge; N. Fork Feather R. Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  SEINET12121859  Lomatium utriculatum Unknown 1985-1 4976 Butte W of Lunt Road, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  POM78230  Lomatium vaginatum C. C. Bruce 1897-03 2053 Butte Little Chico Comment
  RSA4160  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville. 1550 Comment
  JEPS103289  Lonicera hispidula var. vacillans Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CAS-BOT-BC240694  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls Comment
  CAS-BOT-BC240695  Lonicera interrupta John Thomas Howell 1961-9-22 36780 Butte Jarbo Gap, Feather River Highway Comment
  CAS-BOT-BC241434  Lonicera involucrata var. involucrata H. F. Copeland 1920-8-29 141 Butte Jonesville 1219 Comment
  CAS-BOT-BC241435  Lonicera involucrata var. involucrata A. A. Heller 1928-7-10 14651 Butte At Butte Meadows Comment
  CHSC42131  Lonicera involucrata var. involucrata Lowell Ahart 1977-5-18 1370 Butte Along the South Fork of the Feather River, near Golden Trout Crossing. 640 Comment
  UC726746  Lotus argophyllus var. fremontii A. A. Heller 1940-6-5 15699 Butte between the bridge and mouth of the West Branch of the North Fork (along Feather River); Feather River Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA169437  Lotus humistratus L. S. Rose 1963-6-2 63076 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  UC726735  Lotus incanus A. A. Heller 1939-4-26 15387 Butte along the road leading down to The Feather River from Stirling Comment
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  SEINET10451995  Lotus nevadensis Lowell Ahart 1983-5-28 Ahart 4016 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC566229  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  UC862223  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12826 Butte Butte Meadows 1402 Comment
  RSA303524  Lotus unifoliolatus James R. Shevock 1972-5-19 1766 Butte Hwy 70, N of Oroville. 183 Comment
  RSA0118716  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC84016  Ludwigia palustris Lowell Ahart 2003-6-23 10312 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC76286  Ludwigia peploides subsp. peploides Lowell Ahart 1999-9-21 8280 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  NY16038  Lupinus A. A. Heller 1914-2-2 11166 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  UC600396  Lupinus albicaulis var. shastensis H. F. Copeland 1931-6-10 Butte Jonesville Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  SEINET12164082  Lupinus albifrons Unknown 1984-1 5 Butte Oroville. ca 50 yds W of State Hwy. 70 .4miS of junc w/ Oroville Dam Blvd 46 Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  POM196154  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  JEPS119696  Lupinus bicolor Lowell Ahart 2012-5-2 17952 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD77845  Lupinus bicolor Robert E. Preston 2004-3-23 2207 Butte Chico, SW of jct Humboldt Rd and Bruce Rd 79 Comment
  RSA32773  Lupinus bicolor subsp. tridentatus A. A. Heller 1938-4-3 15010 Butte Between Pebtz and Cherokee. Comment
  RSA325881  Lupinus bicolor subsp. tridentatus L. 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
  SEINET10970223  Lupinus bicolor subsp. tridentatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4123 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  JEPS119548  Lupinus bicolor var. pipersmithii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte East of the Deer Pen, between Tables 12 & 13 Lower Bidwell Park, Chico. Comment
  HSC58937  Lupinus densiflorus var. lacteus G. L. Clifton 1975-5-29 4195 Butte Near Pulga, close to Belden 488 Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  CHSC90378  Lupinus nanus E. Ray Latham 1988-4-21 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  CHSC9269  Lupinus nanus var. apricus D. C. Burns 1971-3-23 108 Butte Abundant in Bidwell Park, ca. 300 yds ne of the Chico Municipal Golf Course Building, Chico. 83 Comment
  CHSC940  Lupinus nanus var. apricus E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC48561  Lupinus polyphyllus var. burkei Vernon Oswald 1984-6-11 1280 Butte Near Humboldt Rd, at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  SEINET10452664  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2670 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SD2404  Lupinus superbus var. elongatus E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  POM276281  Lupinus vallicola subsp. apricus Lyman D. Benson 1935-3-27 6363 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC52708  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi E of a spur road from the Concow Road, which is 1.0 mi SW of Jones Meadow. Meadow. 1798 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  CHSC52714  Luzula comosa var. subsessilis L. P. Janeway 1987-5-10 2040 Butte Near PG and E ditch ca 3/4 mi north of DeSAbla Reservoir and near where Doe Mill Road crosses the ditch. 853 Comment
  CHSC43793  Luzula divaricata Vernon Oswald; Lowell Ahart 1987-7-1 3085 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Just above the high-water level on the s side of the large lake. 1935 Comment
  CHSC32677  Luzula macrantha M. S. Taylor 1981-3-24 3435 A Butte S side of Hwy 70, ca. 1/4 mi w of Cresta Powerhouse. 487 Comment
  JEPS118064  Luzula parviflora Lowell Ahart 2011-8-19 17642 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  JEPS119866  Luzula subsessilis Lowell Ahart 2012-5-12 18028 Butte About 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CDA34634  Lychnis coronaria L. Ahart 2009-6-19 15935 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC38295  Lychnis coronaria Vernon Oswald 1983-5-31 585 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 300 ft w of Day Camp. 91 Comment
  CHSC42709  Lycopus americanus Lowell Ahart 1987-6-9 5743 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10498036  Lycopus americanus Lowell Ahart 1991-9-14 Ahart 6717 Butte On the edges of a ditch, between the two large reservoirs, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  CHSC75289  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte On the sides and bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CHSC44272  Madia citrigracilis Vernon Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga. 512 Comment
  CAS-BOT-BC342708  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC342720  Madia elegans Margaret J. Williams; Wayne Roderick 1984-5-25 84- 21 -3 Butte 3.3 mi from Paradise on Honey Run Road 167 Comment
  JEPS115874  Madia elegans Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  CHSC28490  Madia elegans subsp. densifolia M. S. Taylor 1979-8-4 2172 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  CHSC114147  Madia elegans subsp. vernalis G. K. Helmkamp; E. A. Helmkamp 2010-4-23 15935 Butte Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River. 157 Comment
  POM30364  Madia elegans subsp. vernalis C. C. Bruce 1897-05 1989 Butte Humboldt Road Comment
  JEPS108732  Madia exigua Lowell Ahart 2006-6-9 12650 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  JEPS113637  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC342966  Madia gracilis Lowell Ahart 1983-7-29 4232 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC26704  Madia gracilis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  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
  CHSC86135  Madia gracilis John Dittes; Josephine Guardino 2002-6-21 618 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  JEPS119875  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  CHSC46240  Maianthemum racemosum Pauleen Broyles 1987-7-19 1081 Butte Ca 7.2 km (air) NE of Inskip. 1770 Comment
  CAS-BOT-BC510731  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville, at the Summit 640 Comment
  CHSC33974  Maianthemum stellatum M. S. Taylor 1981-5-13 3705 Butte Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi s of Four Trees R, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  CAS-BOT-BC347384  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CAS-BOT-BC347379  Malacothrix floccifera John Thomas Howell 1955-6-15 30510 Butte West Branch of North Fork of Feather River 182 Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC109059  Malva parviflora Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte On the south side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  UC1609147  Marah watsonii Vernon H. Oswald and Lowell Ahart 1993-4-21 5287 Butte ca. 2.25 air mi nw Magalia (Middle Butte Creek Trail on the w side of the creek and on the upstream side of Ponderosa Way) 707 Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC25479  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD122542  Medicago lupulina Lowell Ahart, Peter Ahart 1984-6-10 4693 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC45917  Medicago polymorpha Lowell Ahart 1978-5-1 1690 Butte In a frmed field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC99634  Medicago polymorpha H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. 57 Comment
  CHSC101314  Medicago praecox Lowell Ahart 2009-4-22 15575 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS95061  Melica aristata Lowell Ahart 1997-8-1 7804 Butte about 6 air mi ne of Stirling City (on s side of the County Road, sw of Keyser Creek, about 1 1/2 mi se of Bald Mountain); County Road 1432 Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  CHSC113426  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CHSC30544  Melica torreyana J. D. Jokerst 1980-3-23 490 Butte Along edges of old Cherokee Flume. 0.5 mi W of S end of Bridge on Hwy 70 over W Branch of Feather River. 10 mi N of Oroville. Comment
  UCD89080  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC42525  Melilotus albus Lowell Ahart 1987-5-27 5714 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 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
  CDA40724  Mentha canadensis T. C. Fuller 1962-7-12 9176 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA5711  Mentha pulegium L. Ahart 2000-7-17 8593 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  CHSC92047  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  UC872394  Mentzelia dispersa A. A. Heller 1917-7-26 12851 Butte Butte Meadows 1402 Comment
  CHSC100807  Micranthes aprica R. A. Schlising; L. Janeway 1988-7-1 4550 Butte N part of county: end of road above Summit Lake, on Snow Mountain. Comment
  CAS-BOT-BC428759  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2042 Butte Little Chico Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC34447  Micranthes californica R. E. Preston 1982-2-4 161 Butte Top of cliffs, s rim of Butte Creek Canyon above Honeyrun Covered Bridge, ca. 7.5 mi e of Chico. 289 Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CHSC71108  Micropus californicus Jan Monelo 1989-4-11 8 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  POM57380  Micropus californicus E. B. Copeland 1903-5-2 s.n. Butte Chico Comment
  HSC68241  Micropus californicus var. californicus J. P. Smith, J. O. Sawyer 1973-4-14 6045 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS115318  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  RSA712992  Micropus californicus var. californicus L. Ahart 2006-5-10 12624 Butte North side of Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bride across the North Fork of the Featheer River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 386 Comment
  CAS-BOT-BC348699  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET3441870  Microseris lindleyi Unknown 2003-5-15 10178 Butte Oroville, Oroville, about 12 miles southeast, dredge piles on west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CHSC43704  Microsteris gracilis Vernon Oswald 1983-6-22 734 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humbolt Rd. to Butte Meadows. 1158 Comment
  HSC32580  Mimulus angustatus Linda M. Barker 1974-4-20 152 Butte Cherokee-Table Mt. Rd., 2 mi. S of Cherokee 244 Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  UC196052  Mimulus aurantiacus var. grandiflorus A. A. Heller 1914-5-18 11407 Butte near Forest Ranch; Sierra 609 Comment
  UC885699  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1939-6-7 39242 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  POM5059  Mimulus bicolor A. A. Heller, H. E. Brown 1902-5-12 5545 Butte Grade between Clear Creek and Paradise. Comment
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  HSC86826  Mimulus glaucescens S. Villard 1974-4-26 22 Butte Around Covered Bridge on Humbug Rd., ca. 6 mi. E of Chico Comment
  RSA32857  Mimulus glaucescens A. A. Heller 1938-5-4 s.n. Butte Near Covered Bridge over Butte Creek Comment
  UC336554  Mimulus glaucescens Edw. L. Greene 1890-6-27 Butte Chico Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  SEINET12326993  Mimulus glaucescens Unknown 1984-1 3 Butte ca 6 mi NE of Wildwood AVe, SE side of road, 0.25 mi NE on trail 84 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  JEPS121951  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  JEPS9651  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  UC725754  Mimulus latidens A. A. Heller 1940-5-13 15615 Butte 3 mi w Chico (on State Highway #32) Comment
  CHSC44758  Mimulus moschatus R. Banchero 1980-6-17 243 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  POM273162  Mimulus moschatus Lyman Benson 1932-7-28 3964 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA0116102  Mimulus primuloides var. pilosellus Lowell A. Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 miles (air) west of Philbrook Resrvoir. 1665 Comment
  SEINET10830521  Mimulus torreyi Mary Susan Taylor 1978-7-21 Taylor 1813 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET10962499  Mimulus torreyi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4725 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET12331809  Mimulus torreyi L. Ahart, Ahart, P. 1984-1 4725 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC4465  Minuartia californica C. Glascock 1965-3-23 347 Butte Ca. 1 mi. S of Us99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. Comment
  CHSC83916  Minuartia californica Lowell Ahart 2003-4-10 10054 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UC135739  Minuartia californica Mrs. R. M. Austin Mar, 1896 79 Butte plains e Chico Comment
  CHSC90229  Minuartia cismontana Camela J. Ott 1989-4-18 15 Butte Population ca 150 yds se of junction of Cohasset and Vilas Rds., ca. 12 mi e of Chico. 640 Comment
  CHSC43378  Minuartia douglasii Lowell Ahart 1978-4-17 1646 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC46351  Moehringia macrophylla Lowell Ahart 1989-5-29 6322 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CDA34283  Mollugo verticillata L. Ahart 2009-8-13 16274 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  CHSC97743  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CHSC52037  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 279 Butte W edge of Scotts John Rd 1.7 mi n. of its jct with Humbug/ Humboldt Rd, in open flat overlooking Scotts John Ck. 1828 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC220453  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte At the highway bridge over the Feather River near Oroville Comment
  SEINET10528526  Monochoria vaginalis Vernon H. Oswald, Lowell Ahart 1991-8-28 Oswald 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca 3.5 miles north-northwest of Biggs. Locally abundant emersed aquatic on the margins of rice fields. T19N R2E nw/S34, 100 feet agricultural area. Comment
  OBI10803  Montia chamissoi H. F. Copeland Jul-33 s.n. Butte Vicinity of Jonesville, Lassen natl forest Comment
  UC1609040  Montia fontana Lowell Ahart 1993-7-31 7142 Butte about 2 mi se of Bald Mountain (w side dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  CHSC98947  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-8 14717 Butte Below the high water line of Lake Oroville, about 150 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET10572727  Montia saxosa Mary Susan Taylor 1976-4-24 Taylor 1070 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC6601  Morus alba M. MacArthur 1968-4-23 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  JEPS98309  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  RSA769226  Muhlenbergia filiformis L. Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  UC1563268  Muhlenbergia filiformis unknown 1990-10-21 6636 Butte about 1/2 mi w Gold Flat (1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  SEINET10827782  Muhlenbergia filiformis Edwin B. Copel 1929-7-16 Copeland 339 Butte Jonesville. In open wet ground; the first grass to appear in such places. 1550 Comment
  CHSC36072  Myosotis verna R. A. Schlising; D. Burk, A. Dawson 1982-6-2 4285 Butte N of Oroville and n of Concow Reservoir just s of Flea Valley at headwaters of Concow Creek. Meadow. 1036 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 Comment
  CAS-BOT-BC83261  Myosurus minimus A. A. Heller; H. E. Brown 1902-5-2 5443 Butte Near Butte City. Comment
  SEINET10452818  Myriophyllum exalbescens Mary Susan Taylor 1982-5-22 Taylor 4497 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  CHSC46198  Nama lobbii L. P. Janeway 1988-6-25 2859 Butte At the jct of Skyway and Bull Hill Rd; 3.8 mi N of Inskip. 1584 Comment
  CHSC48464  Nama lobbii Vernon Oswald 1983-7-19 885 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  CHSC42813  Narthecium californicum L. P. Janeway 1987-6-27 2363 Butte On east slope of Bald Mtn, along the Concow Rd. 1706 Comment
  CHSC30273  Nassella pulchra M. S. Taylor 1979-5-4 1997 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek Rd., ca. 26 mi ne of Oroville. 1005 Comment
  RSA754858  Nassella pulchra L. Ahart 2009-4-26 15617 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC34984  Navarretia divaricata R. A. Schlising; R. Banchero 1980-6-17 3739 Butte N of Magalia at Old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock. Roadside. Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  CHSC26807  Navarretia intertexta M. S. Taylor 1978-5-7 1611 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC36719  Navarretia intertexta D. H. Ikeda 1980-5-26 387 Butte 1.0 mi w of intersection of Lunt Rd. and Nelson-Bar Rd. Comment
  RSA716060  Navarretia intertexta L. Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville. 52 Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  CHSC11952  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. In 'Scotch John' meadow. 1650 Comment
  CHSC1251  Navarretia leptalea V. Holt 1951-7-8 Butte Butte Meadows. 1219 Comment
  CHSC31164  Navarretia leptalea M. S. Taylor 1978-7-19 1762 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC31825  Navarretia leucocephala L. Ahart 1977-4-15 1296 Butte Peter Ahart Ranch, Honcut. On bottom of vernal pool. 50 Comment
  JEPS24408  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  CHSC28486  Navarretia tagetina R. A. Schlising 1979-5-30 3425 Butte Richvale Vernal Pools. 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC103708  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico. 144 Comment
  CHSC694  Nemophila heterophylla E. Hembree 1929-3-5 Butte Salmon Hole. 152 Comment
  UC107251  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  UC398653  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte about six mi e Chico (along Chico Creek); Chico Creek, e of Chico Comment
  UC726895  Nemophila heterophylla A. A. Heller 1940-4-10 15536 Butte along Big Chico Creek opposite Golf Links; along Big Chico Creek opposite Golf Links Comment
  SEINET5520962  Nemophila heterophylla H. P. Chandler 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada 150 Comment
  CHSC698  Nemophila menziesii E. Canfield 1904-4-1 Butte Richardson Springs road. 83 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  UC1562353  Nemophila parviflora Vernon Oswald 1990-7-3 4345 Butte ca 0.75 mi s Humbug Summit (ca 4.75 mi e of Jonesville, headwaters of the East Branch Willow Creek); e branch Willow Creek, s of Humbug Summit, e of Jonesville 1950 Comment
  UCD165420  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC108854  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CHSC48638  Oenothera elata subsp. hirsutissima Vernon Oswald 1987-6-12 2993 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC349985  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  CAS-BOT-BC499847  Orobanche fasciculata A. A. Heller 1928-4-30 14538 Butte Along the Neal Road about 3 mi below Paradise Comment
  SEINET10500390  Orobanche fasciculata Mary Susan Taylor 1980-5-15 Taylor 2640 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  RSA0083241  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville. 1500 Comment
  SEINET10549647  Orthocarpus attenuatus Mary Susan Taylor 1975-4-26 Taylor 506 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET10925598  Oryzopsis miliacea James D. Jokerst, Lowell Ahart 1981-9-26 Jokerst 1478 Butte Along dirt road N of Big Chico Cr ca 200 m E of the Sacramento River. Riparian Woodland. 30 Comment
  UCD138166  Ottelia alismoides T. C. Fuller 1977-9-20 2334 Butte west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. Comment
  CHSC99653  Oxalis oregana H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396794N. 57 Comment
  RSA0060803  Oxalis pes-caprae Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  UC195451  Oxypolis occidentalis A. A. Heller 1914-8-6 11641 Butte Chico Meadows Sierra Nevada Comment
  SEINET10454532  Oxypolis occidentalis Mary Susan Taylor 1977-7-15 Taylor 1407 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC40303  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CHSC41348  Panicum acuminatum R. A. Schlising 1981-6-27 4111 Butte N part of county NE of Lomo along Humboldt road. 1341 Comment
  UCD88205  Panicum acuminatum var. fasciculatum E. G. Cakin 1947-5-30 s.n. Butte Bidwell Park, Chico. Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC52374  Parentucellia viscosa L. P. Janeway 1989-5-13 3234 Butte NE corner of Durham-Pentz Rd and Lake Hills Dr (pvt) 1.0 mi E of hwy 191. 115 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  RSA713848  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills, near the eastern shores of Lake Wyandotte, 7 air km ESE of Oroville Dam. 422 Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SBBG649  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 mi N of Gridley Comment
  CHSC3008  Paulownia tomentosa Carl Pejsa 1958-4-19 88 Butte Bidwell Park Forestry Station. Comment
  CHSC100417  Paxistima myrsinites L. P. Janeway; Heather Koeth 2008-11-19 9612 Butte Northern High Sierra Nevada. Along a small creek in a steep deep draw 150 m southwest of Bush Creek, 1.2 air km west-northwest of the mouth of Bus Creek at French Creek. 707 Comment
  UCD103456  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  JEPS107355  Pectocarya pusilla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico 487 Comment
  CHSC32661  Pedicularis densiflora M. S. Taylor; L. Hanson 1981-3-8 3402 Butte On s side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. 1005 Comment
  CHSC85396  Pedicularis densiflora John Dittes; Josephine Guardino 1992-5-7 483 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC90095  Pedicularis densiflora Rebecca L. Hill 1990-4-21 18 Butte Ca. 2 mi e on Humboldt Rd., ca. 50 yds on s side of road. Ca. 2.5 mi sw of Butte Meadows and ca. 27 mi ne of Chico. 1310 Comment
  CHSC44615  Pellaea brachyptera Vernon Oswald 1984-7-2 1344 Butte 2.5 mi s-e of the junction of 26N27 and Humboldt Rd. n-e of Jonesville. 1767 Comment
  CAS-BOT-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 Comment
  CHSC28869  Pellaea mucronata M. S. Taylor 1980-3-1 2347 Butte On se facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC29013  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1980-4-4 2431 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC29215  Pellaea mucronata Carl E. Yingst 1980-4-23 18 Butte Ca. 20 km ne of Chico, 1.8 km sw of Highway 32. 454 Comment
  SEINET11715828  Pellaea mucronata Unknown 1978-1 7 Butte ca 150 ft NW of Skyway Rd, ca 5 mi NE of bridge crossing Butte Creek between Chico & Paradise 244 Comment
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  NY571128  Penstemon azureus var. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn 609.6 Comment
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  UC478467  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  CHSC3360  Penstemon heterophyllus var. purdyi M. Gregg 1966-5-7 162 Butte 3 miles north east of the Skyway on Humbug Rd. Comment
  CDA41857  Penstemon laetus subsp. leptosepalus L. Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC92761  Penstemon newberryi var. newberryi L. P. Janeway 2005-5-29 8412 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
  UC725651  Penstemon newberryi var. newberryi A. A. Heller 1942-5-8 16445 Butte Feather River Hwy, a few feet from the Plumas Co. line Comment
  CHSC115451  Pentagramma pallida M. Sutton; C. Yasuda 2013-3-10 13 Butte Feather Falls Trail. 1069 Comment
  CHSC3994  Pentagramma triangularis A. K. Revard 1967-4-15 2 Butte 3 yd. On s of kirt roadside ca. 0.3 mi up from Cohasset Hwy., and ca. 3.3 mi n on Cohasset Hwy. From the Richardson Springs Rd. Comment
  CHSC48080  Pentagramma triangularis Sharol Lindenstein 1989-4-11 44 Butte Upper Bidwell Park, 0.1 mi nw of Upper Park Rd., 2.7 mi e of jct of Upper Park Rd. and Wildwood Ave., e side of Chico. 79 Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC32116  Pentagramma triangularis subsp. semipallida L. Ahart 1976-7-7 1171 Butte Along edge of rd to Little North Fork of the Feather River, ca. 2 mi s of Junction House. 1219 Comment
  CAS-BOT-BC77134  Pentagramma triangularis subsp. semipallida Lowell Ahart 1980-5-11 2243 Butte 1/4 mile S of Kunkle Res. 500 Comment
  CAS-BOT-BC77079  Pentagramma triangularis subsp. triangularis John Thomas Howell 1962-6-16 37618 Butte Sierra Nevada - Nelson Bar 213 Comment
  CAS-BOT-BC77082  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-16 2044 Butte Honcut, Peter Ahart Ranch 50 Comment
  SEINET13944948 Image available Perideridia bolanderi A. A. Heller 1914-1 11572 Butte Volcanic hills 5 miles east of Oroville in the Digger pine belt. Comment
  UC106559  Perideridia bolanderi subsp. bolanderi Mrs. R. M. Austin 1896-7-4 256 Butte Colby Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  CHSC77418  Perideridia kelloggii Laura Bogni 1997-4-5 22 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET10840955  Perideridia kelloggii Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1398 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  JEPS122075  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  JEPS50772  Perideridia oregana Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9289 Butte on Feather River Hwy about 1 mi n beginning of grade (just e of Messilla Valley) 304 Comment
  CHSC114079  Perideridia parishii Jennifer Buck; Danielle Roach 2009-8-27 WBCCC 02 A Butte Headwaters West Branch Crow Creek, 1 mile south of Mumbo Basin, The Eddys; UTM Zone 10N, 540746E, 4558975 1883 Comment
  CAS-BOT-BC413707  Persicaria hydropiper Lowell Ahart 1981-9-19 3177 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC55245  Persicaria hydropiperoides Lowell Ahart 1991-9-14 6716 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC108130  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC42054  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte On the bottom of a pond, about 1/10 mile sout of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC76290  Persicaria maculosa Lowell Ahart 1999-9-21 8270 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC419174  Persicaria maculosa Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek 50 Comment
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC94786  Persicaria punctata Lowell Ahart 2006-10-8 13428 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET10935989  Phacelia cicutaria Lowell Ahart 1984-4-4 Ahart 4541 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  JEPS26746  Phacelia corymbosa P. C. Hutchison 1961-6-9 2102 Butte at Pulga Bridge canyon of the north fork of the Feather River (on hwy US Alt. 40 and side road to Pulga) Comment
  CHSC720  Phacelia heterophylla subsp. virgata R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  UC1228322  Phacelia heterophylla subsp. virgata L. R. Heckard 1952-6-20 320 Butte road bank about 2 mi above (ne) Pulga; canyon of the Feather River Comment
  UC1564794  Phacelia procera V. Oswald and L. Ahart 1989-7-12 3851 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1926 Comment
  CHSC39121  Phacelia racemosa R. A. Schlising 1980-7-14 3908 Butte N part of county, 1.1 mi n of Snag Lake on the Skyway. 1822 Comment
  CHSC48475  Phacelia racemosa Vernon Oswald; Lowell Ahart 1987-6-10 2981 Butte Forest Service road joining Humbug Rd., in the first drainage e of Humbug Rd. 1874 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  SEINET10658606  Phalaris caroliniana A. Arthur Heller 1902-5-3 Heller 5447 Butte Near Nelson Comment
  SEINET10508599  Phalaris lemmonii Lowell Ahart 1984-5-10 Ahart 4600 Butte T17N R4E. Ca. 2.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC1644  Philadelphus lewisii 1954-5-30 Butte Below Concow reservoir. 609 Comment
  CAS-BOT-BC539359  Philadelphus lewisii James I. Mallory 1970-5-26 373 Butte Little Butte Creek Canyon S of Irish Town 426 Comment
  SEINET10482892  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1976-5-5 Taylor 1113 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC45109  Phleum alpinum Lowell Ahart 1988-9-4 6185 Butte On the bottom of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CDA13299  Phleum pratense G. F. Hrusa, T. D. Wilfred 1996-7-9 13147 Butte Plumas National Forest; Few individuals on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  SD3827  Phlox caespitosa E. B. Copeland 1931-6-19 Butte Jonesville, on and below crags west of The Summit 2100 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  POM299255  Phlox speciosa subsp. occidentalis C. R. Quick 1941-6-8 41 -14 Butte Big Bar Mt. Meadow Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC20109  Phoradendron densum M. S. Taylor 1975-4-9 569 Butte In serpentine area ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  RSA754529  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  CAS-BOT-BC141250  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1978-7-26 53191 Butte Open crest in volcanic agglomerate, E of Nevada City on Highway 20 at junction of road to Washington. Sierra Nevada 1310 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  JEPS115277  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC104009  Photinia Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16745 Butte On the north side of the path, about 100 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CHSC49449  Phyla nodiflora var. nodiflora Vernon Oswald 1983-7-25 910 Butte Indian Fishery (Tyler Slough), Bidwell State Park, at the w end of W. Sacramento Ave. w of Chico. Comment
  CHSC11342  Physalis philadelphica Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  CDA33497  Phytolacca americana L. Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC21009  Phytolacca americana M. S. Taylor 1975-6-22 786 Butte Ornamental on n side of Big Chico Creek in front of Holt Hall, California State University, Chico. Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS115644  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico 68 Comment
  CHSC956  Pickeringia montana 1954-3-30 Butte (Rag Dump 5) 3 mi. north of Paradise on Pentz Road. 457 Comment
  CHSC24561  Pieris japonica M. S. Taylor 1975-5-6 554 Butte Between Holt Hall and Butte Hall, near Little Chico Creek, California State University, Chico campus, Chico. 60 Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46177  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC50635  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10530357  Pilularia americana Mary Susan Taylor 1978-5-7 Taylor 1605 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC102851  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  JEPS102238  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  CHSC43586  Pistacia atlantica Vernon Oswald 1987-4-29 2358 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  CHSC43590  Pistacia terebinthus Vernon Oswald 1987-4-29 2351 Butte Chico Tree Improvement Center (former USDA Plant Introdution Station) in se Chico 68 Comment
  SEINET10966242  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2348 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CHSC92567  Plagiobothrys austiniae L. P. Janeway 2005-3-10 8355 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC46250  Plagiobothrys bracteatus Vernon Oswald 1989-4-19 3739 Butte Wurlitzer Unit, Vina Plains Preserve. Along the upper s bank of Pine Creek just downstream from the mouth of Singer Creek. Also in other pools between Pine and Singer Creeks. 57 Comment
  POM196508  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  CDA34705  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  POM197245  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. Comment
  CHSC40762  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 4886 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC46781  Plagiobothrys greenei Lowell Ahart 1980-5-4 2175 Butte On the bottom of a small vernal pool and along small swales in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC87225  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UCD72999  Plagiobothrys greenei Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC11862  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  SD4241  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 Butte Jonesville. In brush near the head of South Willow Creek. 1700 Comment
  HSC32416  Plagiobothrys nothofulvus Kitsy Kelly 1974-4-20 30 Butte Table Mtn. Volcanic area Comment
  UC625531  Plagiobothrys shastensis Frank W. Gould 1938-4-23 314 Butte in rocky pastureland two mi n Chico 60 Comment
  CHSC103731  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC104803  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  CHSC112245  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC78129  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte On the sides of an old gold mining pit, southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC90645  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-4-2 11682 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CDA42767  Plantago coronopus L. Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. Comment
  CHSC42070  Plantago coronopus Kevin Lund 1986-4-15 16 Butte Ca. 13 mi n of Chico on Hwy. 99. Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 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
  CHSC24970  Plantago erecta T. F. Burnham 1976-4-20 Butte 50 ft s of Cana Pine Creek Road, at the intersection of Hwy 99 and Cana Pine Creek Road. 97 Comment
  CHSC47464  Plantago erecta Lowell Ahart 1978-5-1 1697 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10499848  Plantago erecta Lowell Ahart 1983-4-10 Ahart 3921 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  RSA594179  Plantago lanceolata S. O. Mattoon 1978-9-21 49 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  JEPS122066  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10476455  Platanus racemosa Mary Susan Taylor 1975-7-4 Taylor 829 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  SEINET10464978  Plectritis ciliosa Mary Susan Taylor 1974-3-19 Taylor 85 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET7073603  Plectritis ciliosa subsp. insignis A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  UC426929  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CAS-BOT-BC458148  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CAS-BOT-BC244400  Poa annua Lowell Ahart 1987-5-6 5559 Butte Along the N Fork of the Feather RIver, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  SEINET10887531  Poa annua Lowell Ahart 1987-5-6 Ahart 5559 Butte On dry sand and silt, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC113965  Poa bolanderi Lowell Ahart 2014-7-10 19628 Butte Meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA718083  Poa bolanderi L. Ahart 2006-7-16 12972 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10657852  Poa bulbosa BOS 1978-2-4 BOS 9 Butte Along Richardson Springs Rd, W of Maple Creek, 3 mi. ne of Cohasset Rd, 7 mi nne of Chico. Foothill Woodland. Comment
  CHSC46980  Poa compressa Vernon H. Oswald 1989-9-27 4018 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of Little Butte Creek where it enters the lake. 775 Comment
  CHSC61197  Poa howellii Vernon H. Oswald 1993-5-18 5401 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, between the footbridge over the creek and the side trail to 'Lil' Falls, ca. 2 mi (air) WNW of Magalia. Along the trail near the bottom of the canyon. 609 Comment
  CHSC39600  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  SEINET10659840  Poa pratensis Lowell Ahart 1987-5-6 Ahart 5560 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe POwer House, about 2 miles south east of Jarbo Gap. 271 Comment
  CHSC94346  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC103983  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 320 Comment
  CHSC32606  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising 1981-3-23 1266 Butte Ca 110 m S of Neil Rd. Comment
  CHSC8253  Poa secunda subsp. secunda M. Banning 1969-4-15 54 Butte Junction of Rock Cr. Rd. and Cohasset, along road. 60 Comment
  JEPS120576  Poa sierrae L. P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon + / - overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. Comment
  CHSC27839  Pogogyne douglasii T. B. Devine 1977-5-22 402 Butte Wurlitzer Farm. 57 Comment
  CHSC67521  Pogogyne zizyphoroides James D. Jokerst; Chuck Ricard 1993-4-12 3949 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  CHSC773  Pogogyne zizyphoroides V. Holt 1935-5-7 Butte Centerville Rd. 60 Comment
  RSA0022186  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  CDA25321  Polanisia dodecandra subsp. trachysperma D. G. Kelch 2006-8-2 6 .338 Butte Butte Creek crossing of Durham-Dayton Hwy. Comment
  CHSC83118  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. UTM: 10617204E 4409342N. 620 Comment
  CHSC75266  Polycarpon tetraphyllum Lowell Ahart 1999-5-24 8080 Butte Sidewalks, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CAS-BOT-BC167560  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  UC726743  Polygala cornuta var. cornuta A. A. Heller 1941-6-22 16180 Butte Cohasset Comment
  CHSC103699  Polygonum bidwelliae Lowell Ahart 2010-5-14 16667 Butte Open rocky flats, near south park fence, Disc Golf Area, about 300 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 358 Comment
  SEINET3405102 Image available Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Volcanic outcrops along Neale grade on road from Chico to Paradise Comment
  CAS-BOT-BC414364  Polygonum californicum Lowell Ahart 1988-5-12 5996 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS88583  Polygonum douglasii subsp. douglasii Vernon H. Oswald and Lowell Ahart 1996-7-22 8082 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (w side of levee at sw corner of Tract 6, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 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
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  UC1586533  Polygonum punctatum Lowell Ahart 1991-9-14 6714 Butte about 2 mi e Honcut (sides of reservoir); Joie Osgood Ranch 45 Comment
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  CDA13261  Polygonum spergulariiforme G. F. Hrusa, T. D. Wilfred 1996-7-8 13105 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  UCSB63725  Polypodium californicum Occhino, Deborah 1990-4-22 Butte S bank Big Chico Creek, vic. police pistol range, SW corner Bidwell Park, Chico 60 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  JEPS104148  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 334 Comment
  CHSC71217  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC37138  Polypogon monspeliensis L. Ahart 1982-7-18 3681 Butte Along sides and bottom of wash. Peter Ahart Ranch, ca. 1 1/2 mi n and 1 1/2 mi e of Honcut. 50 Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  JEPS124282  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte About 40 yards of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10530118  Polystichum imbricans Mary Susan Taylor 1980-5-27 Taylor 2668 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CDA14049  Polystichum imbricans subsp. curtum G. F. Hrusa, T. D. Wilfred 1997-5-1 13697 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC86424  Polystichum imbricans subsp. imbricans R. D. Fischer; Paul Maslin 2004-2-7 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  RSA724943  Polystichum imbricans subsp. imbricans L. Ahart 2006-10-8 13442 Butte Steep area about 10 yards below and on the southwest side of Highway 70, east of the north Fork of the Feather River, about .5 mile north of Cresta Power house. 610 Comment
  UC1549529  Polystichum imbricans subsp. imbricans Lowell and Peter Ahart 1984-5-28 4648 Butte ca. 16 mi ne Oroville (ca. 1 mi ne of West Branch Bridge, ca. 2 mi s of Old Yankee Hill) 450 Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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May 14 2014
  UC600406  Populus trichocarpa H. F. Copeland 1930-7-21 Butte Jonesville; by Butte Creek, Jonesville Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10965500  Portulaca oleracea Mary Susan Taylor 1977-10-10 Taylor 1506 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC35962  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Waterfowl Refuge, in slough, at end of West Liberty Rd, ca. 112 mi sw of Gridley. 19 Comment
  UC1099871  Potamogeton foliosus Herbert L. Mason, Verne Grant 1946-8-8 12999 Butte near Pennington Road (Reclamation Ditch 833 on West Gridley Road); Reclamation Ditch 833 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC453812  Potamogeton nodosus Herbert L. Mason 1945-7-10 12640 Butte Sanford slough, Butte Sink, southwest corner of Butte County. Comment
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  CHSC46885  Potamogeton pectinatus Vernon H. Oswald 1989-9-4 3977 Butte Wurlitzer Unit, Vina Plains Preserve. In the farm pond. 56 Comment
  UC1099837  Potamogeton pectinatus Herbert L. Mason, Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road Comment
  CHSC50559  Potentilla bruceae Vernon Oswald 1990-7-3 4342 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. Meadow. 1950 Comment
  UCR190829  Potentilla glandulosa Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CDA26094  Potentilla glandulosa subsp. nevadensis T. C. Fuller 1962-7-12 9167 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC42427  Potentilla recta Lowell Ahart 1987-5-27 5690 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44349  Poterium sanguisorba Lowell Ahart 1988-5-15 6000 Butte On the west side of Lone Tree Road, about 1 mile north of Central House Road, about 11 miles south of Oroville. 36 Comment
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  CHSC39550  Proboscidea louisianica Lowell Ahart 1983-7-10 4192 Butte On the bottom of a dry pond, in front of the large barn, near the two large barns, about 1 1/2 miles north-east of the intersection of Highway 99 and Pentz Road, about 14 1/2 miles north of Oroville. 70 Comment
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CHSC108959  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. 65 Comment
  JEPS115857  Prunus dulcis Lowell Ahart 2009-2-27 15496 Butte South bank of Chico Creek, ''Lost Park,'' Lower Bidwell Park, Chico 60 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  CHSC27236  Prunus lusitanica P. Moyer 1971-11-7 59 Butte CSUC Campus. E of campus annex next to main door of cafe. 60 Comment
  CHSC35090  Prunus persica S. Posner 1972-10-3 Butte Garden behind 725 Nord Ave., Chico. Comment
  CHSC2809  Prunus serotina Carl Pejsa 1958-3-15 89 Butte Bidwell Park Forestry Station. Comment
  CHSC44886  Pseudobahia heermannii Lowell Ahart 1979-4-15 1078 Butte Along the north side of Swedes Flat Road, near the bridge across Rocky Honcut Creek, about 6 miles north of Bangor. 457 Comment
  CHSC39347  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC94620  Pseudognaphalium luteoalbum Lowell Ahart 2006-9-11 13276 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UCD169394  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CAS-BOT-BC357001  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC66287  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28388  Pseudognaphalium thermale J. D. Jokerst 1979-10-13 387 Butte Jordan Hill Rd., 2.4 mi. N. of Concow Cr. 609 Comment
  CHSC31453  Pseudognaphalium thermale L. Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat road, ca. 1.5 mi e of the Bangor Oroville Hwy, near Bangor. 320 Comment
  CAS-BOT-BC361853  Psilocarphus oregonus E. B. Copeland 1931-7-20 s.n. Butte Jonesville. Near Butte Creek House 1700 Comment
  SEINET10475180  Psilocarphus oregonus Mary Susan Taylor 1979-5-6 Taylor 2003 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101651  Psilocarphus tenellus var. tenellus Lowell Ahart 2009-4-26 15633 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, in the center of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC39535  Psilocarphus tenellus var. tenellus Lowell Ahart 1983-6-12 4042 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  RSA4451  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  RSA0036431  Ptelea crenulata Lowell A. Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 356 Comment
  CHSC2448  Pterospora andromedea R. Carter 1965-7-6 274 Butte Found along E side of Oroville-Quincy Rd., 5.2 mi. N of Mountain House, ca. 15' from road in open woods. 1219 Comment
  POM220019  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville. 1524 Comment
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CHSC39392  Pycnanthemum californicum L. Ahart 1983-9-17 4436 Butte Ca. 1/4 mi se of Sitrling City. 1100 Comment
  CHSC51869  Pyrola aphylla L. P. Janeway 1988-7-29 3098 Butte Near Butte Cr, 0.5 mi SW down the rd from Humboldt Rd. 1295 Comment
  RSA0080633  Pyrola dentata H. F. Copeland 1928-8-18 1018 Butte Neighborhood of Jonesville. 1524 Comment
  UC127749  Pyrola picta Miss Kate Conger Butte Brush Creek Comment
  CAS-BOT-BC466011  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CHSC109613  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte On the west side of the horse trail, southeast of the southwest corner of the old walnut orchad, about 3/5 miles west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC45810  Quercus H. F. Copeland 1920-7-6 35 Butte near Jonesville 1219 Comment
  CAS-BOT-BC94692  Quercus X howellii John Thomas Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC2026893  Quercus acutissima Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC762329  Quercus berberidifolia R. F. Hoover 1938-8-2 4719 Butte Chico to Paradise road Comment
  CHSC6009  Quercus borealis M. MacArthur 1968-6-18 224 Butte Ca. 300 ft. NW of Big Chico Creek, by EP bld. entrance, Chico State College. 60 Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  JEPS95870  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  JEPS113133  Quercus douglasii Lowell Ahart 2007-3-28 13600 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  UCD170420  Quercus douglasii D. O. Burge 2017-3-18 2227 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC94250  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte Foothill Woodland at Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. 8 mi N of its jct with Concow Rd 426 Comment
  CHSC96619  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8680 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC33324  Quercus kelloggii P. Reynolds 1980-4-12 19 Butte Corner of 4th street and Ivy, in the City of Chico. 70 Comment
  JEPS95964  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  UC1135714  Quercus lobata C. G. Albertus 1933-6-14 28 Butte 0.5 mi w 14 Mile House; Chiso Quad. 335 Comment
  UCD46845  Quercus lobata P. Akers 2002-5-5 s.n. Butte Pacific Heights Rd, Oroville, near river. 36 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC8558  Quercus suber M. MacArthur 1968-6-12 322 Butte NE side of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  UCD80705  Ranunculus aquatilis CNPS SN Foothill Team 2006-4-24 SNNR 1173 Butte CDFG, North Table Mountain Wildlife Area. 306 Comment
  CAS-BOT-BC379113  Ranunculus aquatilis var. diffusus H. F. Copeland 1920-8-12 119 Butte in creek at Jonesville 1219 Comment
  CHSC10756  Ranunculus aquatilis var. hispidulus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51105  Ranunculus aquatilis var. hispidulus Gerald A. Winter 1989-4-15 6 Butte In stream, ca. 150 yds w of Cherokee Road, on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CHSC38156  Ranunculus arvensis Vernon Oswald 1983-4-18 347 Butte Upper Bidwell Park, Chico, at the n-w side of Horseshoe Lake. 102 Comment
  CAS-BOT-BC378987  Ranunculus arvensis L. L. Heinrichs 1970-5-9 s.n. Butte Biggs, East Biggs Rd., roadside in ditch E of canal Comment
  CHSC52780  Ranunculus canus Vernon Oswald 1983-3-19 198 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 225 Comment
  CHSC61609  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte At Nelson, 14 miles south of Chico. Comment
  UCD18745  Ranunculus canus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 38 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  UCD80704  Ranunculus canus var. canus CNPS SN Foothill Team 2005-3-30 SNFN 0070 d Butte CDFG, North Table Mountain Wildlife Area, in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Road. 306 Comment
  JEPS115242  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC52823  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-7-28 308 Butte N part of county at Chico Meadows; in meadow. 1295 Comment
  POM219014  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. 1550 Comment
  CHSC77994  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  CHSC54389  Raphanus raphanistrum M. Bailey 1991-3-8 649 Butte North side of Butte Campus Drive, across from the Fire Training facility, Butte College Campus. Roadside. 76 Comment
  SFV10355  Rhamnus californica M. L. Vincent 1963-6-6 375 Butte Sierra Nevada Pentz Road, 5 miles south of Paradise. 330 Comment
  SEINET13946281 Image available Rhamnus californica A. A. Heller 1915-1 11869 Butte Chico-Centerville road 3 miles from Chico Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  JEPS88909  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CHSC38259  Rhus aromatica Vernon Oswald 1983-5-23 534 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  POM87358  Rhus trilobata var. pilosissima C. C. Bruce 1897-05 1819 Butte Little Chico Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  UC1562364  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  CHSC20960  Ribes roezlii M. S. Taylor 1975-9-12 909 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  CAS-BOT-BC198967  Ribes roezlii var. roezlii Chester Dudley 1940-6-1 s.n. Butte Near Magalia. Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC81519  Ribes roezlii var. roezlii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  JEPS119551  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC3496  Robinia pseudoacacia Roger Jaegel 1966-4-14 123 Butte Located four miles west of Forest Ranch. Comment
  JEPS95863  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-8-13 8155 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  CHSC82213  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UC2026882  Rosa banksiae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC43126  Rosa pisocarpa subsp. ahartii L. P. Janeway 1987-6-20 2276 Butte Along road to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  JEPS107939  Rosa pisocarpa subsp. ahartii Lowell Ahart 2005-7-13 12144 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  JEPS94329  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on the bottom of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 air miles ESE of Oroville. 655 Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  JEPS98374  Rotala indica Lowell Ahart 2000-10-15 8707 Butte 5 air miles S of Oroville (strand of the Thermalito Afterbay, S side of access road to the boat ramp; W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC31887  Rotala ramosior L. Ahart 1975-7-5 850 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek on mud. 45 Comment
  CHSC54868  Rotala ramosior Vernon Oswald; Lowell Ahart 1991-8-28 4849 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 Comment
  UC1191573  Rotala ramosior Herbert L. Mason, Verne Grant 1946-9-4 13110 Butte 833 Canal, West Gridley Road West Gridley Road; 833 Canal, West Gridley Road Comment
  CHSC84739  Rubus glaucifolius L. P. Janeway; Christine Hantelman 2003-6-19 7850 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 280 Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC11997  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  CHSC48875  Rubus ursinus Vernon Oswald 1987-4-6 2307 Butte Butte Creek Reservoir on the n side of Butte Creek e of the Skyway. 80 Comment
  POM91605  Rubus vitifolius C. C. Bruce 1898-05 1793 Butte One valley, two mountains. Comment
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Mar 5 2011
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  JEPS114963  Rumex acetosella Lowell Ahart 2008-5-8 14726 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  JEPS114984  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte about 5 yards N of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetary, about 10 mi (air) NE of Oroville 305 Comment
  CDA34628  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte On west side and bottom of a steep bank, 10 yards west of the dredger piles along North Honcut Creek, about 2.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC111172  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC38625  Rumex crispus Vernon Oswald 1983-6-2 613 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC45955  Rumex crispus Lowell Ahart 1976-6-27 1149 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC35703  Rumex salicifolius var. triangulivalvis J. D. Jokerst; M. S. Taylor, L. Ahart 1982-4-29 1546 Butte Grey Lodge Waterfowl Management Area, S of Rutherford Rd on dirt road. Comment
  SEINET10530982  Sabina californica A. Arthur Heller 1939-12-10 Heller 15486 Butte Neal Road 3 km above the junction with the Oroville road. 150 Comment
  CHSC82440  Sagina apetala Lowell Ahart 2002-5-7 9617 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UC935789  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  CAS-BOT-BC445808  Sagittaria montevidensis C. Epling; Wm. Robison 1935-7-27 s.n. Butte Near Chico Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CDA9267  Salix exigua D. G. Kelch 2006-8-2 6 .346 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  UC203649  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte 12 mi from Chico (on Chico-Oroville rd; banks of Dry Creek); Sacramento Valley, Dry Creek Comment
  CAS-BOT-BC104081  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson, along the Sacramento River Comment
  CHSC50842  Salix jepsonii Vernon Oswald; Lowell Ahart 1990-7-19 4375 Butte Ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1950 Comment
  CHSC32613  Salix laevigata J. D. Jokerst 1979-3-20 1232 Butte Top of North Table Mt., the second drainage N of Cherokee Rd., at the E edge of the mountain center. 396 Comment
  CHSC76836  Salix laevigata L. P. Janeway 1999-11-15 6625 Butte Northern Sierra Nevada foothills. Along high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  RSA0045619  Salix laevigata Lowell A. Ahart 2012-4-9 17848 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC110314  Salix lasiolepis B. Castro 2006-8-10 1598 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 2.5 mi NE of Richvale, and 0.3 mi S of the Western cnal siphon in Cherokee Canal. On W side of canal abt 30 ft N of dirt road crossing the canal. 35 Comment
  CHSC65014  Salix lasiolepis Vernon Oswald 1987-4-22 2342 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, NE of Hwy 99. 68 Comment
  SBBG126084  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte pond E of the table, at the old homestead, ca 5/8 mi W of Hwy 32, ca 9 mi NE of Chico 259 Comment
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  CAS-BOT-BC124574  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  CAS-BOT-BC124575  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  UC478538  Salix lemmonii E. B. Copeland 1931-6-11 313 Butte Kirby's Meadow Jonesville 1750 Comment
  UC600411  Salix ligulifolia E. B. Copeland 1931-6-18 Butte Jonesville 1550 Comment
  CHSC42543  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5683 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  RSA31117  Salix lucida subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico meadows. 1220 Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC196328  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  SEINET11994764  Samolus floribundus Unknown 1984-1 4762 Butte ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville, Peter Ahart Ranch, along North Honcut Creek 50 Comment
  CHSC45960  Samolus parviflorus Lowell Ahart 1984-7-25 4762 Butte Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Along the wet edges of North Honcut Creek. 42 Comment
  CHSC90623  Sanicula bipinnata John Copeland 1980-2-26 11 Butte Ca. 1.1 mile se of Cohasset Rd., ca. 5 miles e of Chico airport. Comment
  CHSC108811  Sanicula bipinnatifida Lowell Ahart 2012-4-9 17826 Butte About 20 yards southeast of Big Chico Creek, on the northwest side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC87802  Sanicula bipinnatifida Paul Maslin 2004-4-15 19 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610518E 4411342N. 316 Comment
  SEINET10454658  Sanicula crassicaulis Mary Susan Taylor 1979-3-31 Taylor 1971 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CHSC60647  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Near the top of an old track running through brushy live oak woodland from the bottom of the canyon up onto the grassy top of Table Mtn. 341 Comment
  CHSC67150  Sanicula tuberosa James D. Jokerst; L. Ahart 1985-3-24 2179 Butte Rocky Ridge' ca. 1.33 mi NE of edge of Lake Concow on road to Flea Mtn. Comment
  CHSC7052  Sanicula tuberosa F. Kimball 1969-4-15 43 Butte 100 yds. w of Foster Rd., 1.5 mi s of Skyway. Paradise. 396 Comment
  CHSC109755  Saponaria officinalis Lowell Ahart 2012-10-20 18497 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS113171  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (a 608 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  POM354597  Saxifraga marshallii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UC1212527  Saxifraga odontoloma H. F. Copeland 1932-8-22 Butte vicinity of Jonesville (se of crest of Butte Creek); Lassen National Forest Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  CHSC38749  Scandix pecten-veneris Vernon Oswald 1983-5-25 558 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area M (1.2 mi e of the power lines). 146 Comment
  CHSC81939  Schoenoplectus acutus var. occidentalis L. P. Janeway 2001-6-13 7171 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of canal next to the road. 30 Comment
  CHSC88471  Schoenoplectus mucronatus L. P. Janeway; Gail Kuenster 2004-6-29 8172 Butte Northern Sierra Nevada Foothills. Cove on south side of South Fork Feather River arm of Lake Oroville between Stringtown Mountain and Stringtown Road. 280 Comment
  SEINET10466946  Scirpus acutus Mary Susan Taylor 1982-4-28 Taylor 4367 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC56796  Scirpus congdonii L. P. Janeway 1988-7-29 3131 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  CHSC11928  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SD116544  Scirpus tuberosus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Groville and Marysville, stream through Valley Grassland and grainfield. On moist clay. Dry rocky stream bed. 29 Comment
  CAS-BOT-BC239964  Scribneria bolanderi John Thomas Howell 1955-6-14 30466 Butte Magalia 731 Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  JEPS98455  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte 3 1/2 air miles SW of Forbestown (the small meadow S of int of Black Bart Road and Forbestown Road) 731 Comment
  SEINET3450761  Scribneria bolanderi Unknown 2003-5-18 10180 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut 40 Comment
  SBBG16847  Scrophularia californica M. Vincent 1962-4-17 199 Butte Pentz Rd at Nelson Bar turnoff, 5 mi S of Paradise Comment
  CHSC52199  Scutellaria californica L. P. Janeway 1988-5-29 2702 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  UC1594542  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte about 2 air mi n of Oroville (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, n side of dirt road); Thermalito Diversion Pool, Lake Oroville Recreation Area 76 Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC46113  Scutellaria tuberosa L. P. Janeway; Margie McNairn 1989-4-29 3226 Butte Near the old hwy 32, 1 1/4 mi north of Ten Mile House. 536 Comment
  CHSC63968  Scutellaria tuberosa B. Castro; L. P. Janeway 1994-4-21 511 Butte On Watson Ridge, on S-trending ridge just S of USFS Rd 21N25A. 1054 Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  CAS-BOT-BC62120  Selaginella hansenii John Thomas Howell; Gordon H. True 1967-5-9 42232 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  CAS-BOT-BC363283  Senecio aronicoides A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET10474901  Senecio aronicoides Mary Susan Taylor 1979-7-21 Taylor 2163 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC86440  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 92 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  CDA38817  Senecio sylvaticus L. Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  UCD146245  Senecio sylvaticus Daniel S. Park; D. Potter, J. J. Petersen 2010-4-10 14 Butte Table Mt. near creek. 335 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  CHSC28019  Sericocarpus oregonensis M. Hayes; J. Warner 1977-9-11 63 Butte Humboldt Rd., .1 mi from the Butte Meadows turn at Highway 32. 975 Comment
  JEPS95027  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1997-9-6 7890 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel power line, along sides of logging road, about 1/4 mi w of Rim Road) 731 Comment
  CHSC112631  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards southeast of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC116322  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC38856  Setaria parviflora Vernon Oswald 1983-7-13 863 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Along the edge of the parking lot. 85 Comment
  CHSC97725  Setaria sphacelata Lowell Ahart 2007-11-3 14563 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS117311  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  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
  SEINET7085242  Sidalcea asprella Steven R. Hill 2010-7-17 38553 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC52445  Sidalcea hartwegii Molly Henry 1981-4-10 7 Butte 1 mi E of Chico, 100 yds W of hwy 32. 100 Comment
  POM61856  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon (near Clear Creek) from type region Comment
  UC725525  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  CDA36504  Sidalcea malviflora subsp. asprella T. C. Fuller 1970-4-17 19389 Butte 114 Putnam Dr., east above Oroville. 0 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC77818  Sidalcea robusta Tim Stofer 2000-4-20 20 Butte On the east side of the trail 1/2 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 91 Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  CHSC38301  Silene antirrhina Vernon Oswald 1983-6-5 634 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  JEPS98430  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte 3 mi SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 271 Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  CHSC44388  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  CHSC44486  Silene gallica Lowell Ahart 1988-5-1 5974 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC99664  Silene gallica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CAS-BOT-BC181357  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  SD1633  Silene occidentalis E. B. Copeland 1930-7-28 Butte Jonesville 1500 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC101758  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SD779  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville. Common in grassy meadows. 1500 Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC47513  Solanum americanum Lowell Ahart 1989-11-12 6403 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC76346  Solanum rostratum Paul Maslin 1999-7-7 Butte Campus of California State University, Chico; between the Continuing Education building and Big Chico Creek. In flower beds. 59 Comment
  POM69611  Solanum umbelliferum C. C. Bruce 1898-03 1872 Butte Plains [no specific locality given] Comment
  CHSC45761  Solidago velutina subsp. californica Steven Triano 1988-9-18 251 Butte Ca 300 ft s of Nopel Avenue 0.4 mi se of its jct. with Hwy 32 in Forest Ranch. 713 Comment
  JEPS107558  Solidago velutina subsp. californica Lowell Ahart 2005-8-19 12335 Butte In a farmed field, along a small drainage, about 1/8 mile west of Dunstone Drive, about 1 1/2 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville 54 Comment
  CHSC103696  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC38389  Soliva sessilis Vernon Oswald 1983-5-1 402 Butte Upper Bidwell Park, Chico, at Parking Area P located 2.0 mi e of the power lines. 207 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CHSC108129  Sonchus asper subsp. asper Lowell Ahart 2011-10-29 17723 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  JEPS115371  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  CAS-BOT-BC158895  Sorbus scopulina Lowell Ahart 1983-8-16 792 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows 1450 Comment
  CAS-BOT-BC235259  Sorghum bicolor John Thomas Howell 1951-8-19 28152 Butte North Fork Feather River 243 Comment
  CDA3449  Spergula arvensis subsp. arvensis L. Ahart 2003-6-23 10307 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  CDA34643  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte ON the north side of road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC102718  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC106882  Spergularia bocconi Lowell Ahart 2011-5-1 17339 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  CHSC41891  Spergularia rubra Lowell Ahart 1986-8-15 5389 Butte Along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CHSC50665  Spergularia rubra Lowell Ahart 1990-4-28 6470 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC98983  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET10833464  Spergularia rubra Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4707 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC109084  Spiraea Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  JEPS105909  Spiraea douglasii Lowell Ahart 2004-8-2 11331 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC49684  Spiranthes porrifolia Vernon Oswald 1987-7-29 3158 Butte South side of Humbug Rd. just e of Chaparral Guard Station, ca. 1.5 mi (air) wnw of Philbrook Reservoir. 1554 Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  CHSC52067  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-11 269 Butte Abundant in damp sands of Big Kimshew Ck along sw corner of Crane Valley. 1569 Comment
  CHSC43645  Stachys pycnantha B. Castro 1987-8-29 211 Butte Several feet from s edge of Butte Ck, ca 1/2 mi e of Hwy 99 crossing ca 2.1 mi s of Skyway in Chico. 68 Comment
  CHSC26645  Stachys stricta M. S. Taylor 1977-11-12 1534 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. 243 Comment
  CHSC50828  Stellaria calycantha Vernon Oswald; Lowell Ahart 1990-7-19 4369 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1981 Comment
  CHSC58902  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS114741  Stellaria media Lowell Ahart 2008-5-12 14752 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC45567  Stellaria nitens Lowell Ahart 1973-3-14 170 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC405341  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  CHSC46827  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-16 4606 Butte N part of county, S of Humbug Summit, at upper reaches of Willow Creek; meadow edge. 1950 Comment
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CHSC44959  Streptanthus diversifolius Pamela A. Mallen 1987-4-10 10 Butte On Table Mt. ca. 0.5 mi w of Cherokee Rd., 5.8 mi ne of Table Mt. Blvd. Oroville. 426 Comment
  CHSC93522  Streptanthus diversifolius L. P. Janeway 2006-4-23 8557 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Low southeast-facing slope of exposed blocky basalt. 393 Comment
  CHSC109572  Streptanthus polygaloides L. P. Janeway 2012-6-7 10860 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  JEPS98473  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC36698  Streptanthus tortuosus R. E. Preston 1982-6-18 305 Butte Ca. 1 mi n of the site of Merrimac, ca. 23 mi ne of Oroville. 1371 Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  UCD116315  Streptanthus tortuosus R. E. Preston 1996-5-22 937 Butte along Highway 70, 0.5 mile west of bridge at turnoff to Pulga. 512 Comment
  SEINET10448530  Streptanthus tortuosus var. pallidus Mary Susan Taylor 1973-1 Taylor 13 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC36089  Streptopus amplexifolius var. americanus R. A. Schlising; K. Tarp, D. Burk 1982-6-27 4306 Butte SE part of county S of Lost Creek Res. At crossing of Strawberry Valley Creek. 1097 Comment
  CAS-BOT-BC48056  Styrax redivivus John Thomas Howell 1967-6-22 42643 Butte Canyon of the North fork of Feather River, 3 miles northeast of Pulga Bridge. Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  CHSC6613  Symphoricarpos albus M. MacArthur 1968-6-17 315 Butte Yard of Building V, Chico State College campus. 60 Comment
  CHSC96798  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 13889 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CAS-BOT-BC234612  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek 1828 Comment
  CHSC40316  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock. 1066 Comment
  CHSC27722  Symphyotrichum bracteolatum Robert A. Schlising 1978-10-10 3342 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest area. Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CAS-BOT-BC99039  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesvil