Search Results — 2000 specimen records retrieved (1614 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC5956  Acanthus mollis M. MacArthur 1968-6-17 196 Butte Ca. 60 ft. NW of Biology Stockroom, Chico State College campus. 60 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  CAS-BOT-BC330613  Acer glabrum var. glabrum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  POM193371  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville. 2100 Comment
  SEINET10453992  Acer macrophyllum Mary Susan Taylor 1975-9-19 Taylor 915 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC870109  Acer negundo var. arizonicum Lewis S. Rose 1937-6-10 37378 Butte 7 mi w Honcut (along the banks of the Feather River); banks of Feather River, w of Honcut 22 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
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC36957  Achnatherum nelsonii subsp. dorei M. S. Taylor 1982-5-2 4395 Butte Pulga serpentine area on n side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC74147  Achnatherum nelsonii subsp. dorei B. Castro 1998-6-18 791 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  SEINET7593433 Image available Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  UC1499974  Achnatherum stillmanii Lowell Ahart 1983-8-16 4302 Butte 3 mi s near Bull Hill Road Butte Meadows 1600 Comment
  UCD103799  Acmispon americanus var. americanus A. A. Heller 1914-8-13 11692 Butte 8 miles north of Oroville. Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  CHSC31097  Acmispon brachycarpus Diane M. Reilly 1980-4-19 19 Butte Ca. 2 m n off Big Bend Rd. on Pulga Rd, ca. 3 m off Hwy 70 ca. 25 mi e of Chico. 597 Comment
  JEPS119579  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  JEPS120601  Acmispon nevadensis Lowell 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
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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  CHSC90994  Acmispon wrangelianus Lowell Ahart 2005-5-11 11798 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  CHSC111745  Actinidia arguta Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18232 Butte The northeast side of sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  UC426978  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CAS-BOT-BC65574  Adiantum capillus-veneris Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CHSC3630  Adiantum capillus-veneris John Francis 1966-2-28 56 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC39801  Adiantum capillus-veneris Ruby Gist 1935-3-1 Butte Fern Banks. Comment
  CAS-BOT-BC65621  Adiantum jordanii John Thomas Howell 1955-6-15 30502 Butte West Branch of North Fork of Feather River, 2 miles n. of Pentz 335 Comment
  SEINET10470272  Adiantum jordanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4172 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CDA42892  Aegilops triuncialis L. Ahart 2012-6-5 18155 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC40341  Aesculus californica Lowell Ahart 1985-6-17 5045 Butte On dry bare dark lava, near the dirt road on Fields Ridge, about 4 miles southeast of Feather Falls. 762 Comment
  SEINET10494492  Aesculus californica Lowell Ahart 1985-6-17 Ahart 5045 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC41255  Agoseris glauca var. monticola S. C. Morey 1983-7-1 474 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC111970  Agoseris grandiflora var. grandiflora Lowell Ahart 2012-6-5 18174 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Orovillle. 298 Comment
  POM35003  Agoseris heterophylla var. heterophylla C. C. Bruce 1897-04 s.n. Butte Near Chico Comment
  CHSC115189  Agoseris retrorsa Lowell Ahart 2015-4-27 20090 Butte On the northside of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  JEPS114990  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte below the high water line of Lake Oroville, on the N and S side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 246 Comment
  SEINET10792279  Agrostis diegoensis Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3947 Butte Metavolcanic outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservior. Localized population on the bank of a drainage on the outcrop. 1920 Comment
  CAS-BOT-BC127336  Agrostis exarata John Thomas Howell 1955-6-15 30474 Butte Paradise. 518 Comment
  CHSC112330  Agrostis exarata Lowell Ahart 2013-7-9 18826 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
  CHSC50810  Agrostis exarata var. monolepis Vernon Oswald; Lowell Ahart 1990-7-31 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC45104  Agrostis idahoensis Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, the creed crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC64251  Agrostis idahoensis S. C. Morey 1983-8-1 648 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC50566  Agrostis pallens Vernon Oswald 1990-7-10 4359 Butte Head of Feather Falls, ca. 4 mi north of the town of Feather Falls. 579 Comment
  CHSC42997  Agrostis scabra Lowell Ahart 1987-7-8 5815 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  LA206334  Agrostis stolonifera H. S. Yates; 1936-8-13 6105 Butte 2.5 SE of Butte Meadow 1493 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  SEINET10483792  Alchemilla occidentalis Mary Susan Taylor 1980-4-16 Taylor 2493 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC42064  Alisma triviale Lowell Ahart 1986-11-9 5449 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS119851  Alisma triviale Lowell Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  UCD137964  Alisma triviale F. N. Briggs 1931-8-1 2243 Butte Biggs. Comment
  UCD111669  Allium Christopher Mallek 2007-5-4 s.n. Butte Magalia. 756 Comment
  CHSC30980  Allium amplectens M. S. Taylor; R. Schlising, L. Ahart 1980-5-31 2754 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  CHSC4638  Allium amplectens R. Carter 1966-4-21 354 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi from Chico Rd. 274 Comment
  RSA725061  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC460743  Allium amplectens Robert A. Schlising; Marc Hayes 1978-5-22 3266 Butte N of Chico along Cohasset Hwy, 4.3 mi N of Mud Creek. Comment
  HSC84080  Allium amplectens Dale McNeal 1982-4-13 2608 Butte Beside Chico-Paradise Rd., 7.7 mi. W of junction of Hwy. 191 in Paradise Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  CHSC45098  Allium cratericola R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yards W of road. 419 Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  CHSC37130  Allium jepsonii M. S. Taylor; R. A. Schlising 1982-6-24 4750 Butte W side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70, ca. 15 air mi n of Oroville. 792 Comment
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 Comment
  CAS-BOT-BC472968  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Along Ponderosa Way Comment
  CAS-BOT-BC472971  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC49482  Allium neapolitanum Vernon Oswald 1984-3-28 1109 Butte Chico-Butte Ciy Hwy (Seven Mile Lane), 6.3 mi s of its jct. With Ord Ferry rd. Comment
  HSC66173  Allium obtusum var. obtusum M. S. Taylor 1980-5-27 2695 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  SJSU7110  Allium peninsulare C. D. Duncan 1963-5-4 Butte lava cap near Neal Rd between Chico & Paradise, Sierra Nevada foothills 487 Comment
  CAS-BOT-BC132072  Allium peninsulare var. peninsulare Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC36910  Allium platycaule R. A. Schlising; R. Banchero 1980-7-7 3853 Butte E part of county, E of Feather Falls along Lumpkin/La Porte Road at Lumpkin Ridge. 1280 Comment
  CAS-BOT-BC132114  Allium sanbornii var. sanbornii Mrs. C. C. Bruce 1897-5-1 1900 Butte Little [Chico-creek] Chico Creek Comment
  CHSC39056  Allium sanbornii var. sanbornii R. A. Schlising 1983-8-6 4432 Butte NE of Oroville and S of Brush Creek; E of Little Bald Rock. 1030 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  SEINET12328367  Allophyllum divaricatum L. Ahart, Ahart, P. 1983-1 4258 Butte ca 3 mi E of Milsap Bar, ca 25 mi NE of Oroville 1100 Comment
  CDA40009  Allophyllum integrifolium T. C. Fuller 1962-7-12 9186 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC28003  Alnus rhombifolia M. S. Taylor 1978-7-21 1823 Butte Along creek bisecting Oroville-Quincy Hwy ca. 14 mi n of Lake Madrone. 914 Comment
  JEPS119762  Alnus rhombifolia Lowell Ahart 2012-5-14 18052 Butte On the south bank of Big Chico Creek, north of the paved road, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC138038  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  JEPS107324  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC65906  Alopecurus pratensis Vernon H. Oswald 1996-4-20 7394 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CAS-BOT-BC137937  Alopecurus saccatus A. A. Heller 1914-4-24 11319 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  UCD169922  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte North Table Mountian, about 1/4 mile south of the parking area. About 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CDA3266  Amaranthus albus L. Ahart 2002-10-17 9965 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  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
  CHSC113539  Amaranthus californicus Lowell Ahart 2014-9-23 19880 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
  CHSC50985  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte Near 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
  SEINET10478844  Amaranthus californicus Lowell Ahart 1990-9-30 Ahart 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  JEPS120724  Amaranthus palmeri Lowell Ahart 2013-10-12 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about 1 mile east of Biggs Comment
  UC1562412  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte about 2 1/2 mi NE of East Gridley ( along the edges of Palm Avenue, about 1/12 [sic] mile E of Larkin Road) 30 Comment
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC113529  Ammannia coccinea Lowell Ahart 2014-9-23 19867 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
  JEPS122264  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC1101419  Ammannia coccinea Herbert L. Mason and Verne Grant 1946-9-27 13141 -A Butte 3 mi. w. Biggs Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  UCD102883  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  RSA0045595  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC139  Amsinckia menziesii var. menziesii 1949-5-22 Butte Near Sacramento River. 54 Comment
  CHSC109061  Anagallis arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17920 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park. 80 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
  UC641680  Andropogon glomeratus var. pumilus G. L. Stebbins Jr. 1939-7-5 2892 Butte 3 mi e Oroville 152 Comment
  CDA31535  Andropogon virginicus var. virginicus L. Ahart 2000-9-27 8693 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  JEPS99034  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS107279  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  RSA791504  Anthriscus caucalis George K. Helmkamp, E. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC75987  Antirrhinum cornutum L. P. Janeway 1999-7-17 6503 Butte Slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  RSA193352  Apocynum androsaemifolium subsp. pumilum E. B. Copeland 1930-7-7 s.n. Butte Jonesville. 1650 Comment
  CHSC25474  Apocynum cannabinum L. Ahart 1977-6-16 1417 Butte Edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC36160  Aquilegia formosa var. truncata K. Bridwell 1978-5-31 132 Butte Ca. 10 ft E of Coutolenc Rd, ca. 5 mi N of intersection with Skyway, ca. 8 mi NE of Magalia. 853 Comment
  CHSC52194  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 299 Butte E part of county, NW of Brush Creek. 914 Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] Comment
  CHSC82491  Arceuthobium campylopodum Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9753 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC20113  Arceuthobium occidentale M. S. Taylor 1975-5-9 567 Butte In Serpentine area, ca. 50 yds e of the Skyway, ca. 1/4 mi. n of the De Sabla turnoff, Magalia. 731 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52160  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51097 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET10940291  Arctostaphylos manzanita Mary Susan Taylor Taylor 994 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC24416  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Rd. 3 mi. w. of Paradise. Comment
  CHSC103165  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2009-11-19 16564 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 miles west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC40333  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte About 2 miles south of Paradise. 167 Comment
  UC725979  Arctostaphylos mewukka A. A. Heller 1942-1-18 16349 Butte Pentz-Magalia Rd one mi e Bille Road; Paradise Comment
  SEINET10973495  Arctostaphylos mewukka Lowell Ahart 1985-2-17 Ahart 4840 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  JEPS119573  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. Comment
  CAS-BOT-BC38559  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1981-5-25 4107 Butte 1 mi. n. of Forest Ranch on Hwy #32 near Headwater Road. 762 Comment
  CAS-BOT-BC38574  Arctostaphylos mewukka subsp. truei W. K. Fisher 1899-1-1 s.n. Butte Berry Creek. Comment
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CAS-BOT-BC46717  Arctostaphylos patula Saichi Kawahara 1968-5-5 398 Butte Bull Road, 3 mi. s. of Humboldt Rd. 1524 Comment
  UC481536  Arctostaphylos patula H. F. Copeland 1920-5-22 223 Butte Jonesville Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  SEINET10874396  Arctostaphylos truei Mary Susan Taylor 1981-3-24 Taylor 3441 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
  SEINET11987499  Arctostaphylos truei Unknown 1981-1 s.n. Butte 3 mi NE of Magalia Comment
  CAS-BOT-BC47371  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51091 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47386  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51095 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47388  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51105 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48280  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight 1968-3-7 2277 Butte 1/4 mi. down Pentz Road from Hwy 70 Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  JEPS113134  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 46 Comment
  RSA134788  Arctostaphylos viscida subsp. viscida P. C. Everett, E. K. Balls, George B. Everett 1959-10-20 23908 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  RSA0118714  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. 77 Comment
  UC145952  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico; bank of sloughs Comment
  CHSC71208  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte About 1/2 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
  UC204461  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte Big Chico Creek Canyon e. of Chico; Big Chico Creek Canyon 68 Comment
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Feb 17 2016
  UCD137818  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 243 Comment
  UCD137823  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  CAS-BOT-BC295831  Arnica dealbata Lowell Ahart 1986-7-2 5337 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CHSC26658  Arnica dealbata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1501 Butte On n side of the Skyway, in Inskip. 1615 Comment
  JEPS121969  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  RSA4178  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CHSC105789  Artemisia douglasiana Lowell Ahart 2010-9-13 17153 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  JEPS114682  Artemisia douglasiana Lowell Ahart 2008-6-23 15150 Butte N side of Ponderosa Way, N of the water fall, about 1 mi (air) SW of the Ponderosa Dam, about 2 1/4 mi (air) NW of Forbestown 482 Comment
  UC426979  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  CHSC33905  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Creek crossing 20N15 Lumpkin Ridge Rd, 1.9 mi w of Golden Trout Crossing on south fork Feather River, ca. 5 air mi e of Feather Falls. 1097 Comment
  UC116650  Asarum lemmonii Mrs. R. M. Austin June 1896 153 Butte Lomo Comment
  CAS-BOT-BC222806  Asclepias Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  CHSC44084  Asclepias cordifolia L. P. Janeway 1987-7-5 2464 Butte Along the road to High Lakes, 5.3 mi from the Skyway (Philbrook Rd). 1844 Comment
  CHSC51848  Asclepias cordifolia L. P. Janeway 1988-6-16 2794 Butte Slope above W Br. Butte Cr, 0.6 mi S of Lomo along rd through Cedar Cr. 1219 Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44270  Asclepias eriocarpa Vernon Oswald 1988-6-4 3355 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 67 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC40364  Asclepias fascicularis Lowell Ahart 1985-6-30 5074 Butte Along the road at the intersection of Forbestown Road and Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC75437  Aspidotis densa G. F. Hrusa; T. D. Wilfred 1997-5-8 13748 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  CHSC43599  Aster radulinus Vernon H. Oswald 1986-8-7 2276 Butte Northeast edge of Paradise Lake, ca. 1 mi N of the picnic area. 780 Comment
  POM55205  Aster radulinus Kate Conger 1907-1 151 Butte Brush Creek. Comment
  POM180851  Aster subulatus var. parviflorus H. F. Copeland 1923-1 866 Butte Nelson Comment
  UC1506099  Astragalus gambelianus Robert T. Clausen 1963-3-22 63016 Butte Oroville Sugarloaf Peak, Campbell Hills, Sacramento River drainage (Campbell Hills, se slope Sugarloaf Peak, Sacramento River drainage, Sacramento Valley) 150 Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS102548  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC44150  Athyrium distentifolium var. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Somewhat below the n brow of the ridge. 2097 Comment
  CHSC61623  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte About 1 mile east of Snow Mountain. On the north side of the ridge. 2072 Comment
  CHSC27912  Athyrium filix-femina M. S. Taylor 1978-7-19 1737 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC14015  Athysanus pusillus G. Notch 1974-3-12 66 Butte In fields on Burton's Mesa ca. 3 mi e of Chico on the Skyway to Paradise. 213 Comment
  CHSC32762  Athysanus pusillus J. D. Jokerst 1981-4-10 1287 Butte Top of North Table Mt, W edge of mountain ca 200 met N of Cherokee Rd where it intersects the W edge of the mt. 335 Comment
  SEINET10970745  Atriplex canescens Lowell Ahart 1991-9-6 Ahart 6713 Butte On the south side of Rutherford Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  UCD97511  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley. Comment
  CAS-BOT-BC176606  Atriplex serenana var. serenana Lowell Ahart 1977-7-24 s.n. Butte Gray Lodge, 10 miles southwest of Gridley 30 Comment
  CAS-BOT-BC146181  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  CHSC4363  Avena fatua V. Hagaman 1966-4-25 Butte On CSC Campus. Comment
  CHSC4375  Avena fatua M. M. Gregg 1966-4-25 93 Butte Between Ed-Psy Building and Life Science Building on the CSC campus, Chico. Comment
  JEPS115991  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
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  SEINET3875617  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte 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.; 0 30 Comment
  CHSC51059  Baccharis salicifolia Pauleen Broyles 1987-4-29 1017 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Near Singer Creek, below confluence with Pine Creek. Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC43648  Barbarea verna Vernon Oswald 1987-4-22 2340 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. On the edge of the creek. 68 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
  CHSC28538  Berberis aquifolium var. dictyota M. S. Taylor; J. D. Jokerst 1979-10-13 2247 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) near bridge over creek, ca. 1 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC9132  Berberis aquifolium var. dictyota C. A. Stafford 1970-4-26 23 Butte On E. side of Ponderosa Way, ca. 6 miles N. from jct of Cohasset Hwy. and Ponderosa Way. Lassen Game Refuge vic. 1127 Comment
  CAS-BOT-BC75549  Berberis dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 350 Comment
  CHSC97270  Bergia texana Lowell Ahart; Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  HSC96972  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  JEPS122318  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east Oroville. Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC43271  Bidens cernua Lowell Ahart 1987-8-30 5862 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
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 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 collected from wet portion of Chico Meadows north of pond. 1371 Comment
  CHSC31615  Blennosperma nanum Lowell Ahart 1975-4-2 739 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD73334  Blennosperma nanum Chuck Hughes 2008-3-26 25 Butte North Table Mountain. 396 Comment
  SEINET11836643  Blennosperma nanum Unknown 1978-1 12 Butte ca 20 yds N of Skyway, 3.7 mi E of jct Hwy 99 & Skyway, 6.7 mi SE of Chico 207 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  CHSC38019  Boechera platysperma R. A. Schlising; K. Tarp 1982-7-24 4347 Butte Extreme e Butte County, e of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC48895  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 8 ft above the summer level of the creek. 91 Comment
  CAS-BOT-BC145679  Brachypodium distachyon Roxana S. Ferris 1952-5-16 12479 Butte Top of Table Mountain, about 4 miles south of Cherokee on road to Oroville. Comment
  CHSC41131  Briza minor Rod Bungay 1978-4-25 15 Butte Ca. 10 ft e of Cohasset Rd ca. 3 mi ne of East Ave. between Chico and Cohasset. 30 Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  SEINET10971333  Brodiaea californica Mary Susan Taylor 1982-6-24 Taylor 4749 Butte T22N R4E se sec 23. Berry Creek quad. On serpentine rdcut, w side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70; ne of Oroville. 2200 ft. 670 Comment
  CAS-BOT-BC482213  Brodiaea californica subsp. californica Agnes W Purnell 1923-5-1 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  SEINET10965887  Brodiaea coronaria Charles C. Parry Parry s.n. 1887 Butte Chico, Calif. Comment
  CHSC113807  Brodiaea elegans M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  CAS-BOT-BC482196  Brodiaea elegans subsp. elegans Lowell Ahart 1983-6-6 4028 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CAS-BOT-BC482930  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  CHSC3529  Brodiaea nana John Francis 1966-5-7 156 Butte 4.2 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Comment
  CHSC90587  Brodiaea nana Siegel 1977-4-15 2 Butte Butte College, ca. .25 mi se of Clear Creek ca. 4 mi e jct Hwy 99E and Pentz Rd., ca. 10 mi s of Chico. Comment
  SEINET10534142  Brodiaea purdyi R. M. Austin Austin 32 Butte Sutton House Comment
  CHSC71462  Brodiaea sierrae Lowell Ahart 1998-7-19 8045 Butte Along Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC71463  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte On the southeast side of the dirt road to the Forbestown Reservoir, about 1 mile northeast of Forbestown Road, about 2 1/2 miles (air) northeast of Forbestown. 883 Comment
  CHSC92936  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  CHSC93875  Bromus carinatus var. carinatus Lowell Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CAS-BOT-BC148835  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CDA13294  Bromus ciliatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13142 Butte Plumas National Forest; Above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  RSA755045  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC101667  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC52150  Bromus hordeaceus Patricia Collins 1981-4-22 13 Butte Field near the bank of Singer Creek, ca. 21 km n w of Chico. Intersection Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  RSA712855  Bromus hordeaceus L. Ahart 2006-5-10 12621 Butte on the north side of the poor dirt road, Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 355 Comment
  CDA30201  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. Comment
  CHSC49513  Bromus inermis subsp. inermis Vernon Oswald 1987-6-23 3008 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On flood plain. 1511 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  CHSC46436  Bromus japonicus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 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
  CAS-BOT-BC162461  Bromus laevipes John Thomas Howell; Gordon H. True 1967-6-11 42565 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. 426 Comment
  CHSC115913  Bromus laevipes L. P. Janeway; Emily Meigs Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  SEINET10507835  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC2134  Bromus madritensis subsp. rubens H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. east of Chico. Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CAS-BOT-BC161504  Bromus tectorum Lowell Ahart 1982-6-4 3531 Butte Sierra Nevada. Ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  UCD59867  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 miles E of Camp 18, ca. 0.8 mi. E of Feather Falls. 1000 Comment
  SEINET10524080  Bromus vulgaris Edwin B. Copel 1929-7-22 Copeland 336 Butte Jonesville. In brush and low woods. 1500 Comment
  CHSC82504  Bulbostylis capillaris Lowell Ahart; John Dittes 2002-6-17 9720 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  CHSC3584  Buxus sempervirens Susan Carrauthers 1966-2-26 20 Butte City of Chico. E. 5th and Olive Streets. Comment
  CHSC101090  Calandrinia ciliata Lowell Ahart; John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC21073  Callitriche heterophylla var. bolanderi M. S. Taylor 1975-4-26 529 Butte In small pool on e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  CHSC103748  Callitriche heterophylla var. heterophylla Lowell Ahart 2010-5-16 16681 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC103992  Callitriche marginata Lowell Ahart 2010-5-14 16651 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
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC100832  Calochortus luteus M. J. Luesebrink 1978-4-26 21 Butte Ca. 250 ft. n of Wildwood Ave., .8 mi ne of junction with Manzanita Ave., .8 mi sw of rifle range, Bidwell Park, Chico. 56 Comment
  CHSC75414  Calochortus luteus Jennifer Slater 1997-4-27 38 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  CHSC2239  Calochortus monophyllus N. Maxwell 1929-3-17 Butte Paradise. 609 Comment
  CHSC90028  Calochortus monophyllus Peggy Fain 1991-4-21 22 Butte Ca. 3 km. E. of Richardson Springs Hotel (N. side Walker Creek, Musty Buck Preserve). 243 Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  UCSB63613  Calochortus monophyllus Romano, Marci 1986-4-6 Butte 12.5 mi NE of Chico on Hwy 32 548 Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC106082  Calycadenia oppositifolia John Thomas Howell 1962-6-16 37623 Butte Nelson Bar - Sierra Nevada 213 Comment
  CAS-BOT-BC106091  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi. e. of Pentz, Canyon of W. Branch of N. Fork of Feather River 182 Comment
  CHSC27702  Calycadenia oppositifolia Robert A. Schlising 1978-6-11 3289 Butte Cohasset Road, near Cohasset and 5.5 mi above (NE of ) crossing of Mud Creek. Comment
  JEPS105637  Calycadenia oppositifolia L. P. Janeway, John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle 277 Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  UC398686  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte 3 mi n of, along the Richardson Springs road Chico Comment
  UCD129783  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  UC1971697  Calycadenia pauciflora 1981-5-23 2185 Butte 0.5 mi W of Hwy 99, 0.5 mi N of Broyles Road, ca. 10 mi N of Chico 58 Comment
  CHSC25342  Calycadenia spicata M. Hayes 1977-8-3 22 Butte Along Pentz Road 2.0 km east of Highway 99. 80 Comment
  CHSC45646  Calycadenia spicata Vernon Oswald 1988-6-4 3354 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC34793  Calycadenia truncata M. S. Taylor 1981-6-19 3960 Butte North side of Hwy 70 at NW end of Pulga bridge. Ca. 20 mi NE of Oroville. 487 Comment
  SBBG7840  Calycadenia truncata D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 mi S of Flea Valley on rd to Yankee Hill Comment
  CAS-BOT-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  JEPS115584  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC33260  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3687 Butte Along Hwy 32, 3.2 miles S of Butte/Tehama County line. Comment
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  CAS-BOT-BC221232  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  JEPS95023  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte about 2 air mi ne of Stirling City (s side of dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  POM219252  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville. Comment
  SEINET10472624  Camassia leichtlinii subsp. suksdorfii Mary Susan Taylor 1978-6-24 Taylor 1661 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC2026860  Camellia reticulata Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC78240  Campanula scouleri Lowell Ahart 2000-7-7 8554 Butte Campground area, on the south side of Fall River, about 100 yards west of the bridge across Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CAS-BOT-BC37064  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC11925  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC42508  Cardamine breweri Lowell Ahart 1987-5-6 5566 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC37374  Cardamine californica A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  UC117855  Cardamine californica R. M. A. Feb. 1883 332 Butte banks Little Chico Creek; banks Little Chico Creek Comment
  CHSC101975  Cardamine californica var. californica John Copeland 1980-2-20 9 Butte Ca. 0.8 mile SE of Cohasset Road, E side of Maple Branch. Comment
  CHSC90636  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 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
  SEINET10448561  Cardamine oligosperma Mary Susan Taylor 1975-3-3 Taylor 400 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  CHSC20112  Cardamine pachystigma var. dissectifolia M. S. Taylor 1975-5-9 570 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC53710  Carex angustata L. P. Janeway 1987-6-26 2319 Butte Southwest end of Logue Meadows. 1325 Comment
  RSA769592  Carex angustata L. Ahart 2010-9-28 17261 Butte West edge of 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  CAS-BOT-BC18049  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-16 3037 Butte Vernal pool next to Humbug Summit Road ca. 0.8 mile west of Butte Creek House. 1805 Comment
  UC478554  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville 1550 Comment
  HSC87065  Carex barbarae L. P. Janeway, Heidi Wienert, Scott George 1988-7-27 3092 Butte Just W of Murphy Slough and Golden State Island near the Sacramento River 38 Comment
  JEPS97578  Carex bolanderi R. D. Stone and W. B. Davilla 1984-5-16 604 Butte Drainage of the Little West Fork of West Branch Feather River Stirling City (0.5 mi SE of confluence of the Little West Fork and Cunningham Ravine; ca, 2 mi WSW of) Comment
  SEINET11125888 Image available Carex bolanderi Unknown 2009-1 24512 Butte Cascade Range Highlands (CaRH). E side on Concow Road near Clear Creek Ranch, 5 road miles N of route 70. Comment
  CAS-BOT-BC19601  Carex brainerdii L. P. Janeway 1988-6-14 2789 Butte East side of canyon of Cedar Creek 4.3 miles east of Lomo along the Cedar Loop. 1280 Comment
  CAS-BOT-BC19603  Carex brainerdii L. P. Janeway; R. A. Schlising; B. Castro 1988-7-30 3145 Butte Above Coon Hollow; along dirt road 0.8 mile northeast of the creek. 1783 Comment
  CHSC44034  Carex capitata S. C. Morey 1983-7-23 572 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC78278  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
  RSA0056155  Carex cyrtostachya L. P. Janeway, Lowell A. Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC41227  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Along intermittent creek that drains Box Hall Flat. Ca. 1.0 mile east of Potter Ravine, north of adjacent to to Lake Oroville. Comment
  JEPS113266  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
  CHSC50350  Carex echinata subsp. echinata Vernon Oswald 1990-5-14 4209 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  SEINET4231831 Image available Carex feta L. Janeway, Castro, B 2009-1 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CHSC48549  Carex gracilior L. P. Janeway 1988-4-10 2622 Butte North Honcut Cr at Dunstone Dr bridge at jct with Avodado Rd. 82 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CHSC43919  Carex heteroneura var. heteroneura L. P. Janeway 1986-9-1 1836 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  SEINET7561557 Image available Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. 838 Comment
  CHSC52267  Carex infirminervia L. P. Janeway 1986-9-1 1828 Butte East end of Philbrook Reservoir. 1691 Comment
  SEINET4286141 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 A Butte Just east of Philbrook Resevoir. Comment
  CHSC113469  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52912  Carex integra L. P. Janeway 1986-9-1 1829 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  SEINET7562437 Image available Carex integra Lowell Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC102215  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley. Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. 44 Comment
  JEPS105274  Carex laeviculmis Dean W. Taylor 1995-8-6 15392 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  CHSC64236  Carex lemmonii S. C. Morey 1983-7-24 623 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA36731  Carex lemmonii Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, and Peter Zika 2011-8-5 16767 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. Comment
  CHSC105669  Carex luzulina var. ablata Lowell Ahart 2010-9-21 17219 Butte Under red fir trees, open meadow-like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC51507  Carex nebrascensis S. C. Morey 1983-8-1 645 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC44117  Carex nervina L. P. Janeway 1988-7-29 3116 Butte Along Butte Cr where Humboldt Rd crosses near Cherry Hill. 1402 Comment
  CHSC42802  Carex pellita L. P. Janeway; C. A. Janeway 1986-8-31 1815 Butte NE side of Philbrook Reservoir, across the rd from the picnic area. 1691 Comment
  CHSC44695  Carex pellita L. P. Janeway 1988-7-29 3112 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  JEPS106524  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 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
  CHSC44948  Carex simulata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2504 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Mdw on north side of the creek. 1661 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC44108  Carex stipata var. stipata L. P. Janeway 1988-7-2 2953 Butte Marshy mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Cr. 952 Comment
  UC1609335  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  SEINET10749866  Carex straminiformis A. Arthur Heller 1928-7-10 Heller 14620 a Butte Wet meadows at Butte Meadows in the Yellow pine belt. Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  JEPS103104  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7616 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  SEINET10750086  Carex subfusca Lawrence P. Janeway, Robert A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 Janeway 2992 Butte T24N, R5E, Kimshew Point quad. SE1/4 of sec. 6. At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1570 Comment
  SEINET259924  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincy Hwy ca. 14 mi N of Lake Madrone ca. 24 mi NE of Oroville 1463 Comment
  SEINET7577207 Image available Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek. 1500 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  RSA769593  Carex utriculata L. Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  JEPS122078  Carex vesicaria Lowell Ahart 2014-7-13 19668 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CDA13904  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA0060492  Carex xerophila Peter F. Zika, Lawrence Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  CHSC38684  Castilleja affinis subsp. affinis Vernon Oswald 1982-12-28 36 Butte Upper Bidwell Park, Chico, just below the north rim ca. 400 ft e of the power lines. 237 Comment
  CDA13307  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13153 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS N60. Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10865280  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-5-6 Taylor 1583 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CHSC4178  Castilleja attenuata Kathy Sommarstrom 1967-3-25 5 Butte Found in Bidwell Park, 1 mi east of Golf course to the left side of the road. 76 Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 Comment
  CHSC90167  Castilleja attenuata J. Lund 1980-4-19 Butte On a trail leading to the falls above Richardson Springs, northeast of Chico. On hillside. 121 Comment
  UC1609067  Castilleja attenuata Lowell Ahart 1993-6-20 6995 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC33145  Castilleja lacera James D. Jokerst 1981-5-11 1310 Butte Top of Doe Mill Ridge. 457 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin Comment
  CHSC115280  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CAS-BOT-BC48819  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada Foothills, 7 8/10 mi. below Paradise on Chico Road 152 Comment
  SBBG128003  Ceanothus cuneatus var. cuneatus L. P. Janeway 2012-6-23 10889 Butte southwestern spur of Rocky Ridge, 0.6 air kim S of Batchelor Point; along Rd 23N06E 0.8 rd km SE of Rim Rd/Ponderosa Way 895 Comment
  CAS-BOT-BC50780  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte Along Highway #24, a short distance east of Pulga Comment
  SBBG28496  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  UC1094003  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise Comment
  UCSB63612  Ceanothus integerrimus McBride, Marjorie 1986-4-13 Butte 10.7 mi n of Chico, E side of Hwy 32. Paradise West Quadrangle, 7.5'. W center Sect. 25. T23N, R2E. 536 Comment
  CAS-BOT-BC50713  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1980-9-10 2645 Butte Sierra Nevada - 7 miles east of Milsap Bar 1200 Comment
  POM85960  Ceanothus integerrimus var. puberulus C. C. Bruce 1897-1 1821 Butte Little Chico Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  JEPS97589  Ceanothus lemmonii R. D. Stone and W. B. Davilla 1984-4-21 596 Butte ca. 0.3 mi SE of De Sabla Powerhouse; Butte Creek drainage 609 Comment
  RSA19310  Ceanothus lemmonii L. S. Rose 1937-6-10 37377 Butte Forbestown. 838 Comment
  CHSC27336  Ceanothus prostratus T. B. Devine 1977-6-5 412 Butte Ca 1 mi n of De Sabla. 853 Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  UC177577  Ceanothus velutinus var. velutinus H. M. Hall July 1914 9804 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  CHSC3015  Cedrus deodara Carl Pejsa 1958-4-19 137 Butte Bidwell Park Forestry Station. Comment
  CDA34618  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  CDA34195  Centaurea melitensis L. Ahart 2010-6-2 16835 Butte About 3/8 miles north of Cox Lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 miles (air) southeast of Oroville. Comment
  UC196282  Centaurea melitensis A. A. Heller 1914-7-13 1753 Butte 10 mi e of Oroville (Mt. Ida ranch) Comment
  CAS-BOT-BC284502  Centaurea solstitialis Sally Bianco 1995-11-9 1052 Butte NE edge of Concow Lake, 13199 Concow Road Oroville 670 Comment
  JEPS124193  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 -A Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  UCR188716  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  CHSC66838  Centromadia fitchii Vernon H. Oswald 1996-8-29 8248 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the northwest corner of Tract 5, Sanctuary II. 32 Comment
  CHSC27062  Centunculus minimus Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA38803  Cephalanthus occidentalis L. Ahart 2012-7-5 18278 Butte On south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  JEPS119723  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC20994  Cerastium glomeratum M. S. Taylor 1975-4-6 435 Butte In lawn, se corner of Arcadian and W. 3rd Ave, Chico. 60 Comment
  UC1609208  Cerastium glomeratum Vernon H. Oswald and Lowell Ahart 1993-3-24 5238 Butte e. side of Dry Creek Canyon n. of Pentz historical site (on e. side of secondary drainage entering Dry Creek 2 mi. n. of Pentz Rd.) 243 Comment
  POM101604  Cerastium glomeratum C. C. Bruce 1897-05 1843 Butte [Unspecified] Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC107394  Cercis occidentalis Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  SD234126  Cercis occidentalis Virginia Pinkus Ryder 1965-4-3 350 Butte Paradise 456 Comment
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 Comment
  CHSC116951  Cercocarpus betuloides Matthew Forster 2013-3-5 Butte Hwy 32 off of 14 Mile House Rd. 472 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CAS-BOT-BC276480  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  CHSC46071  Chaenactis glabriuscula var. megacephala J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1782 Butte Top of Bald Rock Dome. Comment
  CHSC75997  Chamaesyce maculata Lowell Ahart; Vernon H. Oswald 1999-8-13 8160 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
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  JEPS115678  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville 41 Comment
  RSA726363  Chamaesyce maculata L. Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  CHSC31678  Chamaesyce ocellata L. Ahart 1976-7-4 1153 Butte Pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50995  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-7-4 6542 Butte Near 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
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC27948  Cheilanthes cooperae M. S. Taylor 1979-3-20 1956 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC460928  Chenopodium Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC109758  Chenopodium album Lowell Ahart 2012-10-20 18508 Butte On the south edge of the paved park road, south of Big Chico Creek, about 120 yards southwest of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  CHSC100478  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
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  CHSC44162  Chimaphila menziesii Vernon H. Oswald; Lowell Ahart 1988-7-29 3649 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  UC1609417  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  CHSC71636  Chimaphila umbellata Vernon H. Oswald; Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  JEPS108799  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  JEPS93939  Chimaphila umbellata Vernon H. Oswald and Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi n of Four Trees-Coyote Gap Road Upper Wildcat Creek; USFS 25N95 to Upper Wildcat Creek 1463 Comment
  CHSC97034  Chondrilla juncea L. P. Janeway 2007-7-11 9113 Butte Northern High Sierra Nevada. along the southeast edge of Oroville-Quincy Hwy 0.6 km southwest of 4-Mile Ridge Road. 1006 Comment
  CHSC38608  Chorizanthe membranacea Vernon Oswald 1983-5-14 490 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft. e of the power lines. 274 Comment
  POM165154  Chorizanthe membranacea A. A. Heller, H. E. Brown 1902-5-6 5465 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10479751  Chorizanthe membranacea Lowell Ahart 1984-6-8 Ahart 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC62478  Chorizanthe polygonoides B. Castro 1987-5-21 117 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On lava outcrop in bed of ephermeral drainage between two S-trending ridges, in opening in chaparral. 457 Comment
  CHSC46296  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-5-16 3771 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  SEINET3450753  Chorizanthe stellulata Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10218 Butte Chico, Chico, about 1.5 miles east of Manzanita Avenue, Upper Bidwell Park, Rifle and trap range northeast of Horseshoe Lake, north of Parking Area E 100 Comment
  UC101516  Chorizanthe stellulata Mrs. R. M. Austin 1883-1 Butte Comment
  UC1714463  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte areas about Chico meadow; Sierra 1219 Comment
  SEINET10454840  Cicendia quadrangularis Mary Susan Taylor 1978-4-14 Taylor 1564 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
  CHSC34138  Cicuta douglasii L. Ahart 1981-9-19 3184 Butte Along the edge of Feather River, ca. 100 m s of Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CAS-BOT-BC184835  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug roads. 1813 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
  CAS-BOT-BC278076  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  CAS-BOT-BC285578  Cirsium occidentale var. candidissimum E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC288042  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CAS-BOT-BC285723  Cirsium vulgare Lowell Ahart 1981-8-15 3038 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CHSC24880  Clarkia arcuata T. L. Reynolds 1976-4-25 63 Butte Ca. 200 yds s of Butte Creek and ca. 400 yds sw of Covered Bridge, 6.9 mi ese of Chico. 121 Comment
  CHSC30796  Clarkia arcuata M. S. Taylor 1980-4-18 2527 Butte Bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC87552  Clarkia arcuata R. D. Fischer 2004-4-13 65 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the middle portion of the Humboldt Trail. 426 Comment
  UC1071946  Clarkia arcuata H. and M. Lewis 1951-5-19 826 Butte 1.6 mi below Nimshew (Nimshew to Butte Creek Canyon) Comment
  SEINET12192686  Clarkia arcuata S. M. Grossberg 1978-1 18 Butte Small population, North Table Mountain, ca 1.2 mi NNE of Cherokee Road, 6.0 mi N. of Oroville 373 Comment
  SD122548  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile West of Ponderosa Dam, ca. 2 miles North West of Forbestown. 370 Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC42366  Clarkia concinna subsp. concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  HSC97020  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte Northern Sierra Nevada, 4-5 air mi. N of Paradise and W of upper Paradise Pines, 1.4 mi. W of Jct. of Nimshew Rd. and Centerville Rd. 620 Comment
  UCD104792  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road, 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  CHSC74102  Clarkia mosquinii B. Castro; L. Gehrung 1998-8-19 822 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on SE-facing side of SW-trending ridge E of Get-Up-and-Get Creek. 1210 Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  CHSC52094  Clarkia purpurea R. C. Kirkpatrick 1972-4-25 39 Butte Found ca. 100 yds. se of Horseshoe Lake and ca. 50 yds sw of the skeet shooting range. 152 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
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 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
  CHSC3528  Clarkia purpurea subsp. viminea John Francis 1966-5-7 155 Butte 3.6 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Beside road. Comment
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  CAS-BOT-BC164798  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill 560 Comment
  UC1586588  Clarkia unguiculata Vernon H. Oswald and Lowell Ahart 1991-5-31 4636 Butte drainage on ne side Sycamore Hill (along the roadbed on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation Area 76 Comment
  UCD169923  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 mile (air) east of Chico. 180 Comment
  CHSC56065  Claytonia palustris L. P. Janeway; R. A. Schlising 1988-7-16 3001 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  SEINET10929033  Claytonia parviflora Mary Susan Taylor 1981-5-7 Taylor 3631 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  CHSC56760  Claytonia perfoliata Jan Monelo 1989-4-5 1 Butte At base of Pinus ponderosa and Umbellularia californica, 609 Elliott Rd, Paradise. 548 Comment
  SEINET11931358  Claytonia perfoliata S. C. Joslin 1978-1 14 Butte ca 4 mi NW of Chico on Cohasset Rd at intersection with Richardson Springs Rd 91 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CHSC101322  Clematis lasiantha Lowell Ahart 2009-4-22 15589 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
  CHSC24890  Clematis lasiantha P. Laherty 1976-4-4 18 Butte Ca. 2 ft n of Ponderosa Way, ca. 4.5 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 441 Comment
  RSA59594  Clematis lasiantha Verne Grant, Alva Grant 1950-7-15 8955 Butte 11 miles N of Chico on Hwy 32 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  SEINET12319539  Collinsia grandiflora Unknown 1973-1 14 Butte ca 5 mi NE of Oroville, on top of Table Mt., 20 yds off E side of Old Cherokee Rd Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  POM252812  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte On the Feather River Highway 23 miles from Oroville. Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  CHSC28762  Collomia heterophylla J. D. Jokerst 1978-6-14 131 Butte Roadside, 100 mets. N. of De Sabla Resv. on W. side of Skyway. Comment
  CHSC44412  Collomia heterophylla Lowell Ahart 1988-5-30 6023 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC11957  Collomia linearis E. B. Copeland 1931-6-29 678 Butte Jonesville. Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  RSA770102  Conyza canadensis L. Ahart 2008-11-4 15396 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  SEINET10474385  Conyza floribunda Mary Susan Taylor 1974-1 Taylor 318 Butte 61 Comment
  CDA13289  Corallorhiza maculata G. F. Hrusa, T. D. Wilfred 1996-7-9 13137 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10470000  Corallorhiza maculata Mary Susan Taylor 1981-5-27 Taylor 3804 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  CHSC31087  Cornus nuttallii Herb Allan McLane 1980-4-25 21 Butte 20 ft. n of Ponderosa Way, Plumas National Forest. 670 Comment
  CHSC32750  Cornus nuttallii M. S. Taylor 1981-4-14 3531 Butte N side of Ponderosa Way (Rim Rd.), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  UC202363  Cornus sericea subsp. sericea H. M. Hall July 1914 Butte Butte Creek near Jonesville; Butte Creek 1554 Comment
  UC1562396  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CHSC44467  Cotula australis Lowell Ahart 1988-11-27 5927 Butte Near the south-west corner of Wells Fargo Bank, Gridley. 28 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC117434  Cotula coronopifolia Lowell Ahart 2016-5-31 20903 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CAS-BOT-BC291331  Cotula coronopifolia Lowell Ahart 1980-4-9 2220 Butte Peter Ahart Ranch, Honcut 50 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
  RSA715961  Crassula connata L. Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC42487  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  UCR219265  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-9-5 15588 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  JEPS126582  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 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
  CHSC113533  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 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
  CHSC105798  Cryptantha affinis Lowell Ahart 2010-9-21 17228 Butte On the south side of a poor dirt road, about 1mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC46451  Cryptantha affinis V. Oswald; L. Ahart 1989-6-27 3820 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  RSA774125  Cryptantha affinis L. Ahart 2010-9-21 17228 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
  SEINET10497261  Cryptantha affinis Lowell Ahart 1983-8-16 Ahart 4292 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC46754  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 3/4 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  SEINET10497277  Cryptantha flaccida Lowell Ahart 1985-5-10 Ahart 4951 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  NY43612  Cupressus macnabiana S. Bianco 1995-11-2 1048 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
  POM181962  Cupressus macnabiana J. G. Lemmon 1895-12-2 s.n. Butte Magnalia [=Magalia?] Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  UC1191664  Cuscuta californica Herbert L. Mason and Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge Butte Sink Comment
  SEINET10902992  Cuscuta californica Lowell Ahart 1983-8-16 Ahart 4282 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CDA39928  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET10496611  Cuscuta campestris Lowell Ahart 1983-9-19 Ahart 4455 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
  CDA7735  Cuscuta japonica M. Brown 2007-11-27 PDR# 1328505 Butte Oroville, 3355 Fallbrook. 0 Comment
  CHSC45555  Cycloloma atriplicifolium Lowell Ahart 1981-9-26 3201 Butte Growing on a sandbar along the Sacramento River, about 6 miles west of Chico. 36 Comment
  CHSC21260  Cynoglossum grande M. S. Taylor 1973-3-27 30 Butte Ca. 5 yds s of Humbug Rd, ca. 19 mi se of Chico. 548 Comment
  CHSC78065  Cynoglossum grande Caleb E. Casey 1999-3-4 Butte Upper Bidwell park, below bluffs on south side over Bear Hole. 30 Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  SEINET10497511  Cynoglossum grande Mary Susan Taylor 1973-1 Taylor 30 Butte Along Humbug Road, ESE of Chico; Yellow Pine Forest. Comment
  UC600449  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC190389  Cynosurus echinatus John Thomas Howell; Gordon H. True 1968-6-12 44563 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  SEINET10934072  Cynosurus echinatus K. Bridwell 1978-5-28 Bridwell 120 Butte Along Hwy 70, ca. 6 mi NE of intersection with Pentz-Magalia Hwy., ca. 4 mi SE of Paradise. Yellow Pine Forest. 762 Comment
  JEPS110275  Cyperus bipartitus Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CHSC81932  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  HSC87073  Cyperus difformis C. A. Janeway 1986-10-10 Butte Chico, gravel bar on N side of Chico Creek at 5-mile recreation area 79 Comment
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  UCD54066  Cyperus eragrostis E. M. Johnston 1915-1 W- 142 J Butte Biggs. Comment
  CAS-BOT-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. Comment
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET10466871  Cyperus eragrostis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5157 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC81933  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  SEINET10467311  Cyperus erythrorhizos Mary Susan Taylor 1975-10-3 Taylor 940 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  RSA0060841  Cyperus flavescens Lowell A. Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  JEPS115985  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UCD150345  Cyperus odoratus William Anderson 1965-9-4 s.n. Butte Dry Creek-Paradise Rd. Comment
  CAS-BOT-BC114021  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the city of Chico, on the CSU Chico Campus. Chico Quad. 59 Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC78489  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA739871  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada, along Four Tree Road at crossing of S Branch Mill Creek, 4.5 road km ESE of Hwy 70. 823 Comment
  SEINET10535613  Cystopteris fragilis Mary Susan Taylor 1979-7-21 Taylor 2148 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 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
  CHSC30290  Dactylis glomerata M. S. Taylor 1980-5-27 2645 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC38805  Dactylis glomerata Vernon Oswald 1982-5-23 Butte Upper Bidwell Park, Chico, near the east end of Yahi Trail. Near Chico Creek. 207 Comment
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC42901  Danthonia californica var. americana Lowell Ahart 1987-7-8 5812 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC61368  Danthonia californica var. americana Lowell Ahart 1993-7-29 7121 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC1641  Darmera peltata R. M. Staley 1953-5-17 Butte Canyon Creek. Comment
  CHSC35967  Daucus pusillus M. S. Taylor 1982-5-21 4491 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over the Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  UC118573  Delphinium Mrs. R. M. Austin 1896-7-1 Butte Colby Comment
  SD48509  Delphinium gracilentum E. K. Balls 1957-5-23 22529 Butte 3 mi. se. from turn-off, Hwy. 32 to De Sabla 2200 Comment
  CAS-BOT-BC8572  Delphinium hansenii Lowell Ahart 1980-5-8 2219 Butte North-east of Honcut 65 Comment
  CHSC104825  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico. 188 Comment
  HSC31875  Delphinium hesperium Steven Lagos 1974-4-20 12 Butte Pentz Rd. Comment
  CHSC2487  Delphinium nudicaule W. Fitzwater 1958-4-19 Butte Cohasset Rd., Chico area. 396 Comment
  UC600482  Delphinium nuttallianum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  SEINET5338095  Delphinium nuttallianum D. H. Heinze 1963-4-16 s.n. Butte Chico Calif., Valley grassland. 61 Comment
  CAS-BOT-BC121609  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC41524  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy. 32, ca. 2 mi. e on Humboldt Rd. on n side. 99 Comment
  CHSC53166  Delphinium variegatum Terril Wolt 1970-4-29 31 Butte In Upper Bidwell Park, 50 ft. E. of Horseshoe Pond, Chico. Comment
  SEINET10536090  Delphinium variegatum f. superbum Mary Susan Taylor 1976-3-9 Taylor 1023 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC1466  Delphinium variegatum subsp. variegatum Garnett; Durbrow 1928-3-20 Butte Richardson Springs road. 121 Comment
  POM253323  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte Along the Feather River Highway near Yankee Hill Road about 20 miles from Oroville Comment
  CAS-BOT-BC194307  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1920-7-24 12 Butte Meadow by Colby Creek 1828 Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 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
  JEPS94300  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on bottom of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 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
  CHSC42914  Deschampsia elongata Lowell Ahart 1987-7-17 5822 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
  SACT000938  Deschampsia elongata 1925-6-5 Butte No collector/determiner listed. Comment
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  UCD63483  Deschampsia elongata L. E. Hazeltine 1916-6-10 Butte Chico. Comment
  CHSC39955  Dianthus armeria L. Ahart; P. Ahart 1983-6-30 4173 Butte Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Near the water fountain. 350 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
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC52184  Dicentra formosa subsp. formosa L. P. Janeway 1989-5-17 3254 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. 792 Comment
  SEINET10533972  Dichelostemma californicum A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC30355  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1979-2-23 1134 Butte Top of North Table Mt., W edge of Mountain adjacent to the waterfall at the S branch of Coal Cr. Comment
  CHSC31512  Dichelostemma multiflorum L. Ahart 1978-4-27 1666 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4165  Dichelostemma multiflorum R. Carter 1966-4-30 384 Butte Found 7 mi. E of Oroville, ca. 1/8 mi. w off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CHSC93881  Dichelostemma multiflorum L. P. Janeway 2006-5-28 8636 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. 856 Comment
  JEPS26745  Dichelostemma multiflorum P. C. Hutchison 1961-6-9 2090 Butte 7 mi s Jarbos Gap (along U.S. Hwy 40 Alt., canyon of the North Fork of the Feather River); Canyon of the North Fork of the Feather River Comment
  CAS-BOT-BC501084  Dichelostemma multiflorum A. A. Heller 1902-5-8 s.n. Butte Berry Canyon near Clear Creek Comment
  CHSC31528  Dichelostemma volubile L. Ahart 1977-5-22 1396 Butte Along the sides of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3170  Dichelostemma volubile Robert D. Briggs 1966-4-23 R- 162 Butte 3 miles northeast of chico on hwy. 32. Comment
  CAS-BOT-BC502525  Dichelostemma volubile H. C. Cantelow 1940-5-10 3911 Butte E of Oroville. Old road to Bucks Lake. Comment
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  SEINET12053854  Dichelostemma volubile Unknown 6 s.n. Butte no further locality Comment
  JEPS118007  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte On the west 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
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  JEPS95081  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  JEPS119747  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC44776  Diplacus angustatus R. Banchero 1980-4-9 102 Butte Along Cherokee Rd ca 1.0 mi N of its jct with Oregon rd, 2.3 mi S of the town Cherokee. 426 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29394  Diplacus kelloggii R. A. Schlising; S. Azevedo 1980-6-13 3696 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC43186  Diplacus kelloggii Leslie Steidl 1980-4-1 7 Butte On n side of Craig Access Rd, 2 mi nnw of Lumpkin Rd at boundary of State Park, ca. 18 mi e of Oroville. 316 Comment
  CHSC44671  Diplacus kelloggii R. Banchero 1980-4-26 135 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd, 0.4 mi SW of the town of Cohasset. 426 Comment
  CHSC44747  Diplacus kelloggii R. Banchero 1980-4-7 94 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy, Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC44811  Diplacus kelloggii R. Banchero 1980-4-19 120 Butte Ca 0.4 mi directly SE of Feather Falls, Ca 4.2 mi N of the town of Feather Falls. 579 Comment
  CAS-BOT-BC153336  Diplacus layneae John Thomas Howell 1962-6-15 37533 Butte Magalia 731 Comment
  CHSC44804  Diplacus torreyi R. Banchero 1980-6-2 178 Butte Along Hwy 32 ca 5.9 mi N of the town of Forest Ranch, 6.1 mi S of its jct with Humbolt Rd. 999 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  SEINET8393803  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte westslopes of the Sierra near Forest Ranch. 701 Comment
  CHSC106283  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley. Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. 60 Comment
  JEPS115045  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  RSA769811  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 61 Comment
  CHSC108864  Dodecatheon clevelandii subsp. patulum Lowell Ahart 2012-3-2 17765 Butte Open flat area, on the west side of South Rim Trail, about 40 yards north of Bloody Pin Trail, about 2/4 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 244 Comment
  CHSC1396  Dodecatheon hendersonii R. M. Staley 1953-8-6 Butte Rush Creek. Comment
  CHSC20167  Dodecatheon hendersonii D. B. Dewey 1975-2-28 10 Butte Ca. 400 yds e of Little Butte Creek, ca. 2 mi upstream from intersection with Butte Creek. 182 Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  UC1586407  Dopatrium junceum Lowell Ahart, Peter Ahart, and Carl Wick 1991-7-21 6668 Butte Rice Experiment Station, about 1/8 mi S of Butte City Hwy, N of Biggs 30 Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC42133  Downingia bella Lowell Ahart 1984-5-7 4587 Butte On the bottom and sides of a small swale, Peter Ahart Ranch, about 1 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC52008  Downingia bella John P. McKeon 1980-4-22 10 Butte Ca. 20 m s of jct of Hwy 99 and Cana Hwy, 15 m w of Hwy 99, 19 km nw of Chico. 70 Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC103662  Draba verna var. verna Lowell Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CAS-BOT-BC70853  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte on the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 33 Comment
  CHSC65529  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge to the falls at Feather Falls. 792 Comment
  SD233996  Dryopteris arguta Virginia Pinkus Ryder 1965-4-4 410 Butte Magalia, Feather River. 60 Comment
  CHSC3235  Duchesnea indica Susan Carrauthers 1966-4-20 115 Butte Flower bed on N. side of Life Science building of Chico State College. City of Chico. Comment
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC40900  Dysphania pumilio Lowell Ahart 1985-11-7 5229 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dap. 286 Comment
  CAS-BOT-BC197094  Echinochloa crus-galli Ira L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CAS-BOT-BC197098  Echinochloa crus-galli John Thomas Howell 1951-6-26 27519 Butte Big Bend Mt. 609 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS120038  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CDA187  Echinochloa crus-galli f. longiseta C. Dunshee 1925-1 Butte Rice Station, Biggs. 0 Comment
  CDA1993  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 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
  CHSC113232  Elatine Lowell Ahart 2014-4-30 19421 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC113361  Elatine Lowell Ahart 2014-4-25 19398 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  SEINET7585843 Image available Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC31941  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising, B. Banchero 1979-6-16 845 Butte Community of Butte Meadows, ca. 0.1 mi W of the junction of Scout Rd. and Humboldt Rd, N side of the latter. 1341 Comment
  CAS-BOT-BC112792  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  JEPS98355  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte 5 air miles NE of Feather Falls (just W of the bridge across Fall River, N side of Fall River, 3 mi N of Lumpkin Ridge Road) 1036 Comment
  JEPS98506  Eleocharis pachycarpa Lowell Ahart 2000-8-30 8676 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  CDA2608  Eleocharis pachycarpa L. Ahart 2000-5-24 8389 Butte On the east 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. Comment
  SEINET13710285  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8597 Butte Oroville Wildlife Area, 4 Mi. SW of Oroville (T18N, R3E, Dec 3, NE 1/4) 140 Ft. 43 Comment
  CAS-BOT-BC113171  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville, in and beside the Lily Pond, a permanent pool. 1750 Comment
  SEINET9770291 Image available Eleocharis quadrangulata Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC29845  Elodea canadensis K. R. Stern 1980-6-19 6661 Butte In Gold Run Creek, SE of Shippee Rd. 68 Comment
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  CHSC117590  Elymus caput-medusae L. P. Janeway 2016-6-2 12105 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC8599  Elymus caput-medusae Dave Isle 1969-5-17 477 Butte On E. side of the Bare Hole turn-off from the Upper Bidwell Park road (E. of Chico). 59 Comment
  CAS-BOT-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 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
  UC204881  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC203423  Elymus glaucus subsp. glaucus L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge 1143 Comment
  CAS-BOT-BC234107  Elymus multisetus John Thomas Howell 1955-6-15 30512 Butte West Branch of North Fork of Feather River 182 Comment
  CDA31733  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico 0 Comment
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CHSC49492  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1983-7-6 814 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi e of Hwy 32. 1249 Comment
  CHSC36554  Elymus triticoides L. Ahart 1982-7-10 3668 Butte Ca. 1/12 mi e of checking station, Graylodge Wildlife Refuge Station, on n side of road. 35 Comment
  CAS-BOT-BC410228  Enemion occidentale J. H. Morrison 1933-4-10 s.n. Butte Near Durham Comment
  UCR219089  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15582 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  RSA29938  Epilobium brachycarpum I. L. Wiggins 1928-9-9 3342 Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  JEPS95175  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and the Sacramento River (Sacramento River National Wildlife Refuge, Llano Seco Unit, at s end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC166845  Epilobium canum subsp. latifolium Lowell Ahart 1980-9-10 2627 Butte 1 mile north-east of Milsap Bar 900 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
  CHSC21072  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1975-10-4 954 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  JEPS104196  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  UC1564798  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-12 3850 Butte meadow near headwaters of Big Kimshew Creek (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir, edge of small stream) 1926 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  LA206153  Epilobium obcordatum E. B. Copeland; 1931-7-13 sn Butte Jonesville, at The Summit 609 Comment
  CHSC28717  Epilobium torreyi R. A. Schlising 1979-5-27 3422 Butte Northeast of Chico and southwest of Paradise, near the Skyway. Comment
  CHSC35108  Epilobium torreyi R. Schlising; R. Banchero 1980-7-31 3945 Butte N part of county, N of Snag Lake; along road N and E to Snow Mt. Roadside. 1737 Comment
  RSA0045628  Epilobium torreyi Lowell A. Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 122 Comment
  CAS-BOT-BC57994  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  SEINET10530173  Equisetum hyemale subsp. affine Mary Susan Taylor 1979-3-19 Taylor 1933 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC38236  Equisetum laevigatum Vernon Oswald 1983-3-19 195 Butte Upper Bidwell Park, Chico, at the turn-around at the e end of Upper Park Rd. 207 Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  CHSC24939  Equisetum telmateia subsp. braunii W. A. Vaccaro 1976-4-17 2 Butte Population ca. 2.5 mi e of Centerville, 200 yds s of Humbug Road. 128 Comment
  SBBG126096  Eragrostis curvula L. Ahart 2012-6-2 18126 Butte S side of Hwy 70, ca 0.5 SW of Pentz Magalia Hwy 162 Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97685  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 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
  CHSC97776  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  CDA31777  Eragrostis pectinacea var. pectinacea L. Ahart 2002-9-7 9928 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CDA34555  Eragrostis pectinacea var. pectinacea L. Ahart 2008-11-4 15405 Butte On the east edge of the paved road. about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. Comment
  UCD65666  Eragrostis pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  CHSC35050  Eremogone cliftonii R. A. Schlising; R. Banchero 1981-6-29 4124 Butte NE part of county, 0.5 mi SW of Ramsey Bar on Little Kimshew Creek. 1417 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CAS-BOT-BC131514  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  JEPS120946  Erigeron annuus Lowell Ahart 2013-4-20 18554 Butte West side of Wilson Creek, SW of the dredge pond, about 1/4 mile SW of the barn, about 1/4 mile W of Honcut Cemetery, about 3 air miles NE of Honcut. Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC295169  Erigeron inornatus John Thomas Howell 1962-6-15 37507 Butte Magalia 731 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  UC1562351  Erigeron petrophilus var. viscidulus Vernon Oswald and Lowell Ahart 1990-7-31 4414 Butte 2 mi ne Concow (on Jeep Trail between Concow Road and Rim Road) 902 Comment
  CHSC679  Eriodictyon californicum A. Goekler 1928-4-25 Butte Bidwell Park 76 Comment
  POM73515  Eriodictyon californicum C. C. Bruce 1897-05 1811 Butte Butte Creek. Comment
  JEPS123966  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte About 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CHSC30839  Eriogonum luteolum var. luteolum M. S. Taylor 1978-7-18 1670 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. 701 Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  SEINET10479531  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1975-9-19 Taylor 916 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC269856  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 839 Butte West of Pentz Comment
  JEPS87143  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  CHSC34721  Eriogonum umbellatum var. ahartii M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC86580  Eriogonum umbellatum var. ahartii L. P. Janeway; John Hunt 2003-6-20 7858 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 277 Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  JEPS94932  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-19 7870 Butte about 8 air mi ne of Feather Falls (on s side of Lumpkin Ridge Road, about 1 1/2 mi e of Camp 18,); s side of Lumpkin Ridge Road 1280 Comment
  LA207080  Eriogonum ursinum E. B. Copeland; 1930-7-6 sn Butte Jonesville 624 Comment
  POM193385  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville. 2050 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  SEINET10479576  Eriogonum ursinum Mary Susan Taylor 1980-7-6 Taylor 3075 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC43709  Eriogonum ursinum var. ursinum Vernon Oswald 1983-6-22 747 Butte On the s side of Humbolt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  CHSC84884  Eriophorum gracile R. D. Fischer 2003-6-29 9 Butte Northern Sierra Nevada. Chico Meadows, 1 mile north of Butte Meadows on rd 26N09 in the Boy Scout Camp, Camp Lassen. In mdw just north of the lake. 1280 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  CHSC60818  Eriophyllum lanatum var. croceum Vernon H. Oswald; Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  CAS-BOT-BC308162  Eriophyllum lanatum var. grandiflorum Frank W. Peirson 1926-6-21 6766 Butte 10 miles east of Chico on the Humboldt Road Comment
  UC1118267  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  RSA0035334  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC7118  Erodium moschatum J. Borgstrom 1969-4-23 8 Butte Abundant ca. 4 mi sw of Chico on Dayton Rd, 4 ft. on s side of road. 60 Comment
  JEPS115288  Erodium moschatum Lowell Ahart 2009-4-3 15529 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS94822  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  UCD80353  Erodium moschatum CNPS SN Foothill Team 2005-4-6 SNFN 0099 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville, approximately 1 mile NW of parking area, 123 degrees east of south fork of Coal Canyon. 383 Comment
  POM312408  Eryngium articulatum Verne Grant, Herbert L. Mason 1946-9-4 13103 Butte Colusa Gun Club Comment
  SD225723  Eryngium vaseyi Carol Witham, Jennifer Buck 2001-5-3 186 Butte Off Hwy 99, 2 mi north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072 Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  UC856289  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte near Cohasset; Sierra foothills Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 Comment
  CHSC113422  Erythranthe breweri Lowell Ahart 2014-7-7 19590 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC109353  Erythranthe filicifolia T. M. Hanson; Melanie Williams 2012-6-21 Butte Northern Sierra Nevada. Plumas National Forest; south of Lumpkin Ridge Road (22N27); 2.1 km east of Camp Eighteen. 1256 Comment
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Jan 23 2014
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CAS-BOT-BC153859  Erythranthe glaucescens Mrs. C. C. Bruce 1897-3-1 2106 Butte Little Chico Comment
  CAS-BOT-BC153860  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC110631  Erythranthe glaucescens Christopher T. Ivey; Jenn Coughlan 2013-5-17 383 Butte Centerville Rd. about 1 km N of Honey Run bridge. Roadside ditch on W side of road. 115 Comment
  CHSC44685  Erythranthe glaucescens R. Banchero 1980-3-27 83 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CHSC7109  Erythranthe glaucescens James M. Watson 1969-4-4 8 Butte 4.3 mi e of upper Bidwell Park entrance 50 yds. n of road. 213 Comment
  CHSC3281  Erythranthe guttata M. L. Hillier 1966-5-9 Butte In rd. side ditch. Humbug rd. 2 miles n. of covered bridge. Comment
  CHSC84459  Erythranthe guttata Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 497 Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET8375442  Erythranthe pulsiferae E. B. Copeland 1931-7-6 687 Butte Jonesville; by Jones Creek. 1500 Comment
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  SEINET10469663  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3518 Butte T23N R4E sw sec 36, Pulga SW quad. Open rocky serpentine ridge, n side of Concow Rd, ca. 3/4 mi s of its jct with Ponderosa Way/Rim Rd, ca. 6 air mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 2800 ft. 853 Comment
  CHSC32649  Erythronium multiscapideum M. S. Taylor; D. V. Hemphill 1981-3-18 3416 Butte N side of Pulga Rd, near its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC79870  Erythronium multiscapideum Leanna Brown 1999-4-27 71 Butte Eastern shore of Paradise Lake. 753 Comment
  UC843861  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  SEINET10469551  Erythronium multiscapideum Mary Susan Taylor 1981-4-14 Taylor 3533 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  SEINET10839630  Erythronium multiscapideum Lowell Ahart 1983-4-14 Ahart 3934 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  SEINET10971603  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3471 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  POM253318  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway near the Yankee Hill road Comment
  CAS-BOT-BC402961  Eschscholzia californica John Thomas Howell 1962-6-15 37469 Butte Magalia 731 Comment
  CAS-BOT-BC402974  Eschscholzia californica Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  CHSC52448  Eschscholzia lobbii Germaine Belanger 1984-4-3 12 Butte 6 mi S of Oregon Gulch and Cherokee Rd jct. 396 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
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  CAS-BOT-BC310464  Eucephalus tomentellus M. S. Taylor; L. Ahart 1981-8-16 4212 Butte N side of rd 25N04, ca. 0.5 mi e of its jct with 52513, ca. 1 mi ne of Jones Meadow, ca. 6 mi ne of Stirling City 1889 Comment
  JEPS87402  Euonymus occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  CHSC34808  Euphorbia crenulata M. S. Taylor 1980-5-8 2615 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SD48502  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Highway, U. S. 40 alt., 18 miles northeast from Oroville. 700 Comment
  CHSC21006  Euphorbia peplus M. S. Taylor 1975-4-6 433 Butte On ne corner of Arcadian and W. 4th Ave, Chico. 60 Comment
  SFV10869  Euphorbia peplus M. L. Vincent 1963-6-8 390 Butte Stearns Road. East of Paradise. 520 Comment
  SEINET10841056  Euphorbia serpillifolia Mary Susan Taylor 1978-9-8 Taylor 1887 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS95142  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Hocut Creek) 60 Comment
  CHSC65324  Eurybia integrifolia Lowell Ahart 1995-10-3 7670 Butte East of the dirt road, west of a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC102534  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC109774  Euthamia occidentalis Lowell Ahart 2012-10-20 18531 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  SEINET10920743  Festuca californica Lowell Ahart 2007-5-29 Ahart 13939 Butte T21N, R6E, Secton 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  POM365944  Festuca californica var. californica L. Ahart, P. Ahart 1984-6-10 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET10560618  Festuca elmeri Elihu Hall 1863-1 Hall s.n. Butte Bolander. Comment
  JEPS120932  Festuca myuros Lowell Ahart 2013-5-18 18701 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CHSC99566  Festuca subuliflora L. P. Janeway 2008-6-22 9432 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  UC1586629  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte about 1.5 mi sw Forbestown Reservoir (along the s side of the dirt road that goes to the Forbestown Reservoir) 609 Comment
  SEINET10475090  Filago gallica Mary Susan Taylor 1978-5-6 Taylor 1623 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  SEINET223406  Filago gallica B. Ertter, J Strachan 1980-5-5 3265 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  UCD112793  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  CHSC109215  Frangula rubra B. Castro; L. P. Janeway 2004-6-13 1467 A Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Road. 829 Comment
  JEPS120064  Fraxinus Lowell Ahart, Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the south side of Brig Chico Creek, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC223388  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC1084  Fraxinus dipetala M. Roberson 1956-5-2 Butte S.W. of Paradise, along the Skyway. 426 Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  UC1594533  Fraxinus dipetala Vernon H. Oswald and Lowell Ahart 1992-4-8 4897 Butte s side Thermalito Diversion Pool (at the nw foot of Sycamore Hill, near abandoned railroad grade in the Oroville Dam Recreation Area); Oroville Dam Recreation Area, Sycamore Hill 73 Comment
  UC175530  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Big Chico Creek Chico Comment
  CAS-BOT-BC130318  Fritillaria eastwoodiae Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  SEINET10469657  Fritillaria eastwoodiae Mary Susan Taylor 1980-4-18 Taylor 2502 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC29995  Fritillaria micrantha L. Ahart 1980-3-26 Butte Ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CAS-BOT-BC508145  Fritillaria recurva Carl Purdy 1938-1-1 s.n. Butte Forbestown Rd. out of Oroville Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  CHSC31421  Galium bolanderi L. Ahart 1980-9-10 2630 Butte Ca. 1 mi NE of Millsap Bar, ca. 25 mi NE of Oroville. 900 Comment
  JEPS6576  Galium bolanderi Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4721 Butte along Nimshew rd 1.1 <mi?> below junction with main Magalia-Stirling road (0.3 mi above Nimshew) 792 Comment
  CHSC48885  Galium grayanum var. grayanum Vernon H. Oswald 1983-8-17 988 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi NE of Jonesville. 2097 Comment
  CHSC28690  Galium parisiense M. S. Taylor 1979-5-6 2000 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC82511  Galium parisiense Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9748 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC31921  Galium porrigens var. tenue M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3380 Butte 20 ft E of Lumpkin Rd, on N side of Macabes Creek, ca. 2 mi N of jct of Lumpkin Road and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  CHSC39927  Galium porrigens var. tenue M. S. Taylor; V. Oswald 1984-4-4 5374 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  CHSC25343  Galium tricornutum Marc P. Hayes 1977-4-24 20 Butte Adjacent Hwy 99 ca. 2.3 km S of Butte Creek. 60 Comment
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  UC600429  Galium trifidum var. pusillum H. F. Copeland 1930-7-28 Butte S. Willow Creek Jonesville 1828 Comment
  SEINET10500750  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  SEINET10836841  Galium triflorum Mary Susan Taylor 1979-10-5 Taylor 2237 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow 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
  CHSC116733  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 Butte North side of the water ditch, 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. 44 Comment
  CHSC77052  Garrya fremontii L. P. Janeway 2000-1-29 6629 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  JEPS119565  Garrya fremontii Lowell Ahart 2012-2-22 17755 Butte On the south side of Guardian Trail, about 20 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  SEINET10453484  Garrya fremontii Mary Susan Taylor 1980-4-18 Taylor 2530 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CAS-BOT-BC282603  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC82418  Gastridium phleoides Lowell Ahart 2002-5-7 9639 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
  CHSC93483  Gastridium phleoides Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  UCD66560  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  CDA13283  Gayophytum diffusum subsp. parviflorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13131 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC77425  Genista maderensis Laura Bogni 1997-4-5 15 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  CHSC108762  Genista monspessulana L. P. Janeway 2011-5-2 10249 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC12613  Genista monspessulana S. Posner 1972-9-24 Butte Rocky n bank, Butte Creek. Ca. 300 yds s of Humbug Rd., ca. 3 mi e of Skyway. Comment
  CHSC99670  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CDA42876  Geranium carolinianum L. Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  CHSC44413  Gilia capitata subsp. pedemontana Lowell Ahart 1988-5-30 6028 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  SEINET12350112  Gilia tricolor subsp. tricolor Unknown 1998-4-11 7 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  CHSC12169  Githopsis specularioides Lowell Ahart 1973-5-6 Butte Swedes Flat Road, near Bangor. 457 Comment
  SEINET10464592  Githopsis specularioides Taylor 1975-4-29 Taylor 536 Butte Scattered on south side of Pentz road, about 0.25 mile east of Highway 99, about 15 miles south of Chico Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  UCSB44171  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 4 miles west on Cherokee Rd. from Hwy 70 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  SEINET10537439  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 229 Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  JEPS115661  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 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
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte 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
  CHSC45004  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SD111956  Gratiola ebracteata Barbara Ertter, Jeffrey Strachan 1980-5-5 3266 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of the house, ditch 29 Comment
  SEINET10547782  Gratiola ebracteata Mary Susan Taylor 1980-4-21 Taylor 2562 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
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC46860  Grindelia camporum var. camporum Vernon Oswald 1989-9-6 3980 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the ranch road and Little Dry Creek, ca. 0.4 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET10724142  Grindelia hirsutula Melvin L. Conrad 1973-6-5 Conrad 7025 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. Comment
  UC480671  Hackelia nervosa H. F. Copeland 1931-6-11 Butte woods above Butte Creek Meadows; Jonesville Comment
  CAS-BOT-BC282856  Hainardia cylindrica Lowell Ahart 1980-6-15 2382 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC28407  Hamamelis vernalis J. Battagin 1979-9-13 Butte Ca. 5 air mi due e of Big Bend Mt. Comment
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. 237 Comment
  CHSC82422  Hedypnois cretica Lowell Ahart 2002-5-7 9644 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
  CHSC43196  Helenium bigelovii Robert Banchero 1981-7-11 566 Butte Ca 2.0 mi ne of Coyote Gap. Meadow. 1463 Comment
  JEPS118061  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 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
  CAS-BOT-BC314696  Helianthella californica var. californica A. A. Heller 1915-5-25 11897 Butte Ridge above Enterprise in teh Sierra Nevada 609 Comment
  CAS-BOT-BC314755  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC87795  Helianthella californica var. nevadensis Paul Maslin 2004-4-6 13 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608765E 4408682N. On old road cut. 435 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. Comment
  CHSC31567  Hemizonia congesta subsp. luzulifolia L. Ahart 1974-10-5 658 Butte Near Honcut. 45 Comment
  CHSC82423  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2002-5-7 9628 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
  SEINET3840036  Hesperevax caulescens Unknown 2003-5-14 10175 Butte Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  CAS-BOT-BC175994  Hesperolinon californicum A. A. Heller; H. E. Brown 1902-5-8 5504 Butte Berry Canyon (near Clear Creek) Comment
  CDA13914  Hesperolinon micranthum G. F. Hrusa, T. D. Wilfred 1997-7-3 13980 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC37381  Heteranthera limosa R. A. Schlising 1980-8-3 3961 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
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC71170  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte About 1/2 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
  JEPS98368  Heterocodon rariflorum Lowell Ahart 2000-6-27 8527 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  SEINET10475087  Hieracium albiflorum Mary Susan Taylor 1978-7-18 Taylor 1677 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
  UCD133134  Hieracium albiflorum Robert C. Burness 1970-5-23 62 Butte on around 15* slope, around 6 miles southeast of Stirling City on Ragdump Road. 762 Comment
  CHSC43670  Hoita macrostachya Vernon Oswald 1983-6-14 685 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  CHSC50670  Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte Along the north edge of the dirt road, along the road to the Forbestown Reservoir, about 2 miles north-east of Forbestown. 822 Comment
  CAS-BOT-BC280711  Holcus lanatus John Thomas Howell 1962-6-15 37483 Butte Magalia 731 Comment
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC26788  Hordeum marinum subsp. gussoneanum M. S. Taylor; M. Hayes 1978-5-7 1598 Butte Richvale vernal pools, on w side of Hwy 99, ca. 20 mi s of Chico. 30 Comment
  HSC91100  Hordeum marinum subsp. gussoneanum J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  CHSC2155  Hordeum vulgare H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. of Chico. 60 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC112456  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte Under the cleared poleline, about 50 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  CHSC43295  Hypericum anagalloides Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SEINET10720066  Hypericum anagalloides A. Arthur Heller 1914-8-6 Heller 11637 Butte Chico Meadows. 1219 Comment
  POM196017  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  JEPS98691  Hypericum mutilum Lowell Ahart 2000-7-18 8602 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CDA13831  Hypericum perforatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13559 Butte Butte Basin; 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  SEINET10472151  Hypericum perforatum Mary Susan Taylor 1975-6-25 Taylor 792 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC99308  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
  CAS-BOT-BC133558  Iris hartwegii Lewis S. Rose 1937-6-10 37373 Butte Forbestown 838 Comment
  CAS-BOT-BC133554  Iris hartwegii Mrs. H. C. Cantelow 1940-5-10 s.n. Butte About 2 mi. W. of Brush Creek Ranger Station Comment
  CHSC93187  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  JEPS88861  Iris hartwegii subsp. hartwegii Carol A. Wilson 1992-5-18 92 -ph24 Butte 21 mi w Beldon (along Hwy 70, in Feather River Canyon); Feather River Canyon 426 Comment
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 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
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  CAS-BOT-BC69979  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 Comment
  SEINET6164857  Isoetes howellii B. Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CAS-BOT-BC61872  Isoetes nuttallii Lowell Ahart 1979-4-17 s.n. Butte 2 mi. n.w. of Bangor, about 1/4 mile north of Avacado Ave. 150 Comment
  CAS-BOT-BC61875  Isoetes nuttallii Lowell Ahart 1980-4-19 2087 Butte Valley Grassland, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC61880  Isoetes nuttallii John Thomas Howell 1976-4-1 51530 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC108964  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 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
  CHSC99485  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Small meadow, 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
  UCR262435  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15575 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CHSC27163  Juglans regia M. MacArthur 1968-6-13 307 Butte Parkinbg lot NE of Building U, Chico State College campus. 60 Comment
  CHSC97062  Juncus acuminatus Lowell Ahart 2007-7-27 14396 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  JEPS87447  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  SEINET10971375  Juncus balticus Lowell Ahart 1984-5-6 Ahart 4586 Butte T17N R4E. Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 mi N and 3 mi E of Honcut; ca. 12 mi S of Oroville. Foothill Woodland; 50 m. 50 Comment
  CHSC6115  Juncus bufonius var. bufonius A. R. Jaegel 1968-4-19 152 Butte 1 mi s of Cherokee on Cherokee Rd. Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 Comment
  CHSC47535  Juncus bufonius var. congestus Lowell Ahart 1974-6-23 494 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS94875  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte about 5 air mi sw of Gridley (n side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
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1
  JEPS98525  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC30954  Juncus dubius L. Ahart 1980-7-4 2458 Butte Small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  SEINET5716466 Image available Juncus effusus Lowell Ahart 1985-1 5086 Butte About 2.5 mi. NE of Forbestown. 10 yds. S of dirt rd. to the Forbes town Res.; Forbestown 869 Comment
  SEINET10872269  Juncus effusus var. pacificus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4202 Butte T19N R7E sec 6. Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. Yellow Pine Forest; 550 m. 550 Comment
  UCD141535  Juncus ensifolius Robert E. Preston 1982-7-16 337 A Butte Crane Valley. 1584 Comment
  SBBG121549  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte E side of Encina Grand Rd (Bloomer Hill Rd), ca. 50 yards N of the home, ca. 0.25 W of Bloomer Hill 808 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  CHSC113432  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-7 19581 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC113446  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-10 19623 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC117019  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte Depression (mud puddle) in the middle of a poor road, about 50 yards east of cow corral, about 200 yards north of the County Road, about one mile we of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  UC1564788  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-6-27 3830 Butte ca 3.3 air mi se Jonesville (Humbug Rd at Butte Creek); Butte Creek 1767 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
  CHSC49615  Juncus howellii Vernon Oswald 1983-7-6 824 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Along a stream in a meadow. 1325 Comment
  CAS-BOT-BC110103  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC110136  Juncus leiospermus var. leiospermus J. D. Jokerst 1979-5-2 1227 A Butte On top of North Table Mountain, ca. 200 meters south of Cherokee Road along the east edge of section 17, southwest of benchmark 1263. 396 Comment
  CHSC93492  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 368 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
  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
  JEPS110148  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  UC1594619  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  RSA795238  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-nothing Creek, about 150 yards north of Lumpkin Ridge Road., About 0.5 miles southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 air miles northeast of Feather Falls. 1225 Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  JEPS115909  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC41903  Juncus tenuis Lowell Ahart 1976-9-21 1198 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  JEPS127245  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UC1562428  Juncus tenuis Lowell Ahart 1990-5-24 6483 Butte about .12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  JEPS118353  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC78337  Juncus trilocularis Lowell Ahart 2000-6-27 8512 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC45224  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte About 1 1/2 miles north-east of Highway 99 and Pentz Road. 91 Comment
  UC690220  Keckiella breviflora var. glabrisepala A. A. Heller and H. E. Brown 1902-5-6 5471 Butte near Clear Creek; Berry Canyon Comment
  CHSC38694  Keckiella lemmonii Vernon Oswald 1983-6-17 698 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 200 ft w of the parking area at Day Camp. 91 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC274278  Lachnagrostis filiformis Lowell Ahart 1977-4-29 1520 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CAS-BOT-BC340447  Lactuca saligna Lowell Ahart 1983-9-19 4459 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC341296  Lagophylla glandulosa R. F. Hoover 1965-10-16 9719 Butte Deer Creek road east of Chico Comment
  CHSC38370  Lagophylla ramosissima subsp. ramosissima Vernon Oswald 1983-5-27 564 Butte Upper Bidwell Park. Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  CAS-BOT-BC337912  Lasthenia californica Lowell Ahart 1970-4-20 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC30691  Lasthenia californica M. S. Taylor 1980-3-1 2352 Butte Near Elliot Spring House, s side of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  CHSC8158  Lasthenia californica D. McClain 1969-3-20 82 Butte 20 yds. from Upper Bidwell Park Rd., 1/2 mi. from entrance of Upper Bidwell Park, Chico. 60 Comment
  SEINET10473882  Lasthenia californica Mary Susan Taylor 1980-3-1 Taylor 2352 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
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  UCD80080  Lasthenia fremontii CNPS SN Foothill Team 2005-4-12 SNFN 0077 e 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 across a diversion canal). 87 Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  CAS-BOT-BC213347  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 8786 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  CHSC115496  Lathyrus nevadensis var. nevadensis L. P. Janeway 2015-3-16 11639 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC65554  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-6 4774 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 749 Comment
  CAS-BOT-BC213294  Lathyrus sulphureus Mrs. H. C. Cantelow 1939-5-19 2438 Butte Near Brush Creek Ranger Station, E. of Oroville Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  JEPS117248  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  CHSC3471  Layia fremontii Roger Jaegel 1966-3-21 64 Butte Located six miles southeast of Chico two miles east of Highway 99 on Pentz Road. Comment
  UCR238596  Layia platyglossa George K. Helmkamp, E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley, W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  CHSC38826  Leersia oryzoides Vernon Oswald 1983-9-24 1046 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  JEPS94891  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte about 7 air mi n Oroville (w of the cattle chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  JEPS117544  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  CAS-BOT-BC339120  Leontodon saxatilis subsp. saxatilis Lowell Ahart 1986-11-14 5475 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
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  SEINET10841504  Lepidium latifolium Mary Susan Taylor 1982-5-22 Taylor 4507 A Butte T17N R1E ne/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, sw corner of jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 60 ft. 68 Comment
  RSA500419  Lepidium latipes Vernon H. Oswald, L. P. Janeway 1989-4-17 3735 Butte Butte Sink Wildlife Area (W portion of Schohr Ranch), between the ranch road and Little Dry Creek near the S gate on Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  JEPS98681  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte NE of Oroville Post Office (S side of the Ehmann Home) 36 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  CHSC25356  Lepidium virginicum var. pubescens M. P. Hayes 1977-4-22 10 Butte Along Hwy 70 ca 2.2 km sw of Butte-Plumas county line, ca 23 km nw of Paradise. 485 Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CHSC36973  Leptosiphon acicularis L. Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC63262  Leptosiphon acicularis Lowell Ahart 1994-4-16 7284 Butte Peter Ahart Ranch, about 1 5/8 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC1275  Leptosiphon bicolor J. Gulick 1929-4-18 Butte Rifle range near Chico Creek. 106 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  UCSB63628  Leptosiphon filipes Heinitz, Eric 1979-4-25 Butte North side of Skyway; T22N, R2E, sec. 36 (Hamlin Canyon 7.5 Quad); 30 m. north of roadside 243 Comment
  JEPS122142  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CAS-BOT-BC341786  Lessingia nemaclada John Thomas Howell 1951-6-26 27508 Butte Feather River Canyon 198 Comment
  CAS-BOT-BC341795  Lessingia nemaclada R. F. Hoover 1965-10-16 9720 Butte Deer Creek Road east of Chico Comment
  CHSC42032  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10572650  Lewisia rediviva Mary Susan Taylor 1973-1 Taylor 14 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
  CHSC42584  Ligusticum californicum Vernon Oswald 1983-6-22 729 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  CAS-BOT-BC130564  Lilium humboldtii Mrs. C. C. Bruce 1897-6-1 1856 Butte unspecified Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CAS-BOT-BC133048  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC110623  Limnanthes alba Lowell Ahart 1980-4-30 2136 Butte Sierra Nevada. On Swedes Flat Road near Bangor. 320 Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  CHSC3404  Limnanthes douglasii subsp. rosea Alice L. Stoll 1966-3-21 60 Butte In field alongside Pentz Road, 1 mile from Highway 99E. near Chico. Comment
  JEPS111053  Limnophila X ludoviciana Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16446 Butte Rice Experiment Station NW of Biggs, drained field at NE corner of Hamilton and Riceton roads. Biggs 7.5' Quad. Comment
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Dec 15 2017
  UCD169442  Limnophila X ludoviciana Lowell Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 28 Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  UC1181372  Linanthus ciliatus Lewis S. Rose 1945-5-12 45029 Butte Richardson Springs 304 Comment
  UC133721  Linanthus filipes Mrs. R. M. Austin Apr 1896 152 Butte e of Chico Comment
  JEPS58544  Linanthus pygmaeus R. M. Austin Mar 1886 168 Butte e of Chico Comment
  CHSC31875  Lindernia dubia var. anagallidea L. Ahart 1973-6-21 255 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76029  Lindernia dubia var. dubia Vernon H. Oswald 1999-8-29 9839 Butte Gravel bar on the east side of the Sacramento River downstream from Ord Ferry Bridge at the northwest corner of Rancho Llano Seco. 28 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  SEINET10483000  Lithophragma Mary Susan Taylor 1981-5-7 Taylor 3635 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC52134  Lithophragma bolanderi Carol A. Bordin 1983-4-19 19 Butte S Pentz-Magalia Hwy and Hwy 70 intersection, 0.3 mi e of Hwy 70 to Cherokee Rd. ca. 7.2 mi n of Cherokee Rd and ca. 6 mi n of Oroville city limit. Table Mtn. 335 Comment
  CHSC7108  Lithophragma parviflorum var. trifoliatum James M. Watson 1969-3-31 4 Butte 4.3 mi e of upper Bidwell Park entrance 100 yds. s of road at edge of canyon. 213 Comment
  RSA715850  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  UCR190828  Lithospermum californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  UCD66074  Lolium multiflorum M. Vincent 1964-4-9 536 Butte Clark Rd., 5 miles south of Pearson Rd. Comment
  SEINET10591941  Lolium multiflorum Madsen 1970-4-5 Madsen 28 Butte On N side of creek, ca 300 yards N of Honeyrun Road, 1.5 miles NE of Covered Bridge at intersection of Humbug and Honeyrun Roads, E of Chico. Soil of valley adobe overlying rocks. Associate: Avena fatua. 229 Comment
  JEPS103519  Lolium perenne Lowell Ahart 2002-6-2 9675 Butte Drainage, E of the large exposed drain pipe, road cut on the S side of Lumpkin Road, ca 1 mile NE of the intersection of Lumpkin Road and Forbestown Road, ca 12 miles (air) E of Oroville. 548 Comment
  CHSC28975  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst 1980-3-12 469 B Butte Ca 1.0 mi E of Chico Municipal Airport. 60 Comment
  CHSC77473  Lomatium dasycarpum subsp. tomentosum Anna Pinsky 2000-4-30 32 Butte Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek, on rock outcrop. 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
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 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
  JEPS14508  Lomatium marginatum var. marginatum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5612 Butte 0.7 mi S of Oregon City (along Oregon gulch road) Comment
  CHSC83905  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC96803  Lomatium utriculatum Lowell Ahart 2007-4-30 13712 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  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
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  SEINET10874111  Lotus corniculatus Mary Susan Taylor 1975-10-29 Taylor 975 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
  UC204729  Lotus humistratus A. A. Heller 1914-5-8 11377 Butte the Clear Creek to Paradise grade Comment
  RSA21306  Lotus humistratus Carl B. Wolf 1937-5-13 8651 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10451972  Lotus humistratus Mary Susan Taylor 1978-5-6 Taylor 1571 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET12161339  Lotus humistratus S. M. Grossberg 1978-1 12 Butte ca .5miWNW of Hwy 32, 9.2miNE of Chico 366 Comment
  SEINET3523639 Image available Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirling 1074 Comment
  JEPS115566  Lotus micranthus Lowell Ahart 2009-5-23 15758 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road 381 Comment
  SEINET6655536  Lotus nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Yellow Pine Forest.; 0 274 Comment
  RSA406268  Lotus unifoliolatus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  SEINET5766816 Image available Lupinus albifrons H. E. Brown 1897-1 201 Butte near Clear Creek Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 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-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  CHSC115358  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte Steep east road cut, along Oregon Gulch Road, about one mile south of Oregon city, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  CAS-BOT-BC196255  Lupinus albifrons var. eminens A. A. Heller 1938-4-23 15050 Butte Along Highway #24, near the junction with the Yankee Hill road Comment
  CHSC62830  Lupinus bicolor Ella Icard 1893-1-1 Butte Comment
  JEPS115809  Lupinus bicolor var. tridentatus Lowell Ahart 2009-4-26 15619 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  JEPS119780  Lupinus bicolor var. tridentatus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  POM23589  Lupinus densiflorus var. palustris C. C. Bruce 1898-05 2453 Butte Grain fields. Comment
  SEINET10452690  Lupinus latifolius subsp. longipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4235 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  UC1564779  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-6-27 3821 Butte Humbug Rd at Butte Creek House ca 3.3 mi (air) se Jonesville 1767 Comment
  CHSC90013  Lupinus microcarpus Peggy Fain 1991-4-21 25 Butte Along Richardson Springs Road, ca. 1 km. from Cohasset Highway. 152 Comment
  UC1594541  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  CHSC75366  Lupinus microcarpus var. microcarpus Jennifer Slater 1997-4-12 17 Butte Upland area at the Wirlitzer addition of the Vina Plains Preserve, approx. one mile west of Hwy 99. 67 Comment
  UC1075909  Lupinus nanus E. K. Balls and L. W. Lenz 1955-5-13 20684 Butte on road from Oroville to Magalia 1/2 mi s Paradise Comment
  UC725973  Lupinus nanus A. A. Heller 1938-4-14 15034 Butte summit of Table Mountain 609 Comment
  SEINET12164075  Lupinus nanus E. J. Baker 1984-1 3 Butte E side of Hwy 70, 1miSE of intersection w/ Hwy 149, 6miNW of Oroville 58 Comment
  SEINET8057003  Lupinus nanus M. J. Williams 1967-4-22 s.n. Butte Table Mt., Cherokee Road near Oroville 610 Comment
  UC725745  Lupinus nanus A. A. Heller 1939-3-23 15355 Butte Berkeley Olive Orchard Comment
  CHSC32763  Lupinus pachylobus J. D. Jokerst 1981-3-29 1280 Butte Top of North Table Mountain, ca. 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC40601  Lupinus pachylobus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1962 Butte Common on open annual grasslands north of Kunkle Reservoir, e of Pentz Rd., s of Paradise. 457 Comment
  CHSC33125  Lupinus polycarpus J. D. Jokerst 1981-4-10 1291 Butte Top of North Table Mt., ca 300 m N of Cherokee Rd at the W edge of the mountain. Comment
  JEPS23890  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  JEPS121922  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC436643  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC4296  Luzula comosa var. subsessilis R. L. Smith 1966-5-5 Butte US Plant Introduction Station. 5 mi sw of Chico. Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  SBBG128085  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, bottom of an old gold mined area, ca. 400 yards SW of the cemetery, ca. 10 mi NE of Oroville 305 Comment
  UC1191829  Lycopus americanus Herbert L. Mason and Verne Grant 1946-8-14 13025 Butte canal near big pond on Sacramento Outing Club Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  CHSC39330  Lythrum hyssopifolia Lowell Ahart 1983-6-26 4132 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. 500 Comment
  JEPS87380  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CHSC36529  Madia elegans L. Ahart 1982-6-4 3543 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 304 Comment
  JEPS115612  Madia elegans Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC342957  Madia gracilis Clarence R. Quick 1952-6-30 52 -105 Butte Ridge top, Big Bar Mt., east of Pulga 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
  CHSC86972  Madia gracilis L. P. Janeway; John Hunt 2003-6-12 7825 Butte Northern Sierra Nevada Foothills. At Lime Saddle; about 100 m northeast of junction of the campground road and Lime Saddle/Nelson Bar Road; west side of West Branch Feather River arm of Lake Oroville. 305 Comment
  CHSC2306  Maianthemum racemosum R. M. Staley 1953-7-1 Butte Canyon Creek. Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  JEPS104310  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC754  Marrubium vulgare M. Davidson; Vesta Holt label. 1929-5-6 Butte Bidwell Park. 60 Comment
  CHSC90112  Marrubium vulgare Lesly Hess 2001-5-6 Butte Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC39968  Marsilea vestita L. Ahart; P. Ahart 1983-7-10 4191 Butte Ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 13 mi n of Oroville. 65 Comment
  HSC32657  Marsilea vestita Dave Knorr 1974-4-20 114 Butte 1 mi. E of Hwy. 99 S of Chico on Skyway Rd. Comment
  SEINET10474310  Matricaria matricarioides Mary Susan Taylor 1975-4-11 Taylor 456 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  SEINET10839148  Matricaria occidentalis Mary Susan Taylor 1982-4-28 Taylor 4359 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC3950  Meconella californica E. P. Parreno 1967-3-26 Butte Upper Bidwell Park ca 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC43350  Meconella californica Lowell Ahart 1978-4-19 1656 Butte Near the overlook at Feather Falls, along trail to Feather Falls, about 5 miles north-west of the town of Feather Falls. 548 Comment
  CAS-BOT-BC422641  Meconella californica W. R. Ernst 1958-3-27 215 Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  UCR208956  Meconella denticulata H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  CHSC63250  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  UCD106765  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  JEPS95544  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  CHSC70851  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  CHSC101768  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC56830  Melica californica J. D. Prouty 1980-4-17 80 .68 Butte Woodland off of Yankee Hill Road. 518 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  UCD87025  Melica californica August L. Hormay 1928-6-6 s.n. Butte Campbellville, East of Chico. Comment
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Feb 18 2013
  CAS-BOT-BC281303  Melica harfordii Lowell Ahart 1987-7-8 5798 Butte Along Big Bar Mountain Rd, about 3 miles SW of Coyote Gap, SE of Pulga 1280 Comment
  CHSC74168  Melica harfordii B. Castro; L. Gehrung 1998-7-2 800 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 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
  JEPS94567  Melica subulata Lowell Ahart 1997-7-11 7753 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
  RSA4653  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  CHSC86105  Melica torreyana L. P. Janeway; John Hunt 2003-4-22 7765 Butte Northern Sierra Nevada Foothills. Peninsula on west side of Lake Oroville at Goat Ranch Campground; 2.9 km west of Bloomer Hill. 287 Comment
  CDA5723  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. 0 Comment
  CHSC65206  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/10 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS113501  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  RSA724861  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. 41 Comment
  RSA726806  Mentha pulegium L. Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, aout 3/4 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC43845  Mentha spicata B. Castro 1987-8-25 206 Butte Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC78519  Mentha spicata Lowell Ahart 2000-8-30 8675 Butte Margins of a large pond, about 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CHSC44351  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  CAS-BOT-BC428768  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville, on Mt. Ida road Comment
  CHSC10838  Micranthes integrifolia Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC429203  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UC1070012  Micropus californicus var. californicus C. G. Albertus 1933-7-6 25 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  SEINET10971137  Microseris acuminata Mary Susan Taylor 1978-4-14 Taylor 1562 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
  CHSC54378  Microseris douglasii subsp. douglasii M. Bailey 1991-4-19 572 Butte Butte College campus ca 1/4 mi n of Pentz Road and ca 300 ft e of Williams Road. 85 Comment
  CHSC54092  Microseris sylvatica Vernon H. Oswald; Lowell Ahart 1991-5-13 4588 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 121 Comment
  SD87566  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  RSA715721  Microsteris gracilis subsp. gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  POM5059  Mimulus bicolor A. A. Heller, H. E. Brown 1902-5-12 5545 Butte Grade between Clear Creek and Paradise. Comment
  SEINET10570193  Mimulus bicolor Mary Susan Taylor 1978-7-18 Taylor 1683 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS118486  Mimulus breweri Lowell Ahart 2011-7-9 17562 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS34388  Mimulus glaucescens Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8864 Butte 0.75 mi s Pulga (above side road off U.S. highway 40, just before bridge across Feather River, n base of grade over Jarbo Gap); Canyon of North Fork of Feather River 426 Comment
  RSA60038  Mimulus glaucescens G. R. Campbell 1950-6-8 15487 Butte 9 miles southeast of Paradise Comment
  RSA60039  Mimulus glaucescens G. R. Campbell 1950-6-8 15488 Butte 6 miles southeast of Paradise Comment
  RSA795591  Mimulus glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km northeast of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  UC103699  Mimulus glaucescens R. M. Austin Apr, 1883 213 Butte Little Chico Creek Comment
  UC1303145  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte about 5 mi from Paradise (near the Neale grade) Comment
  JEPS115190  Mimulus guttatus Lowell Ahart 2009-6-19 15926 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS126560  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SBBG50968  Mimulus guttatus J. Doty 1969-3-31 615 Butte E side of Cohasset Rd, ca. 8 mi N of Chico Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  UC1778564  Mimulus moniliformis S. E. Schoenig 1998-7-5 98 -77 Butte Wet gravely seep. E roadside of Hwy 32, ca. 1mi NE of road Forest Ranch. Comment
  CHSC28680  Mimulus moschatus M. S. Taylor 1978-7-21 1827 Butte On s side of Oroville-Quincy Hwy along creek in meadow in Yellow Pine Forest, ca. 14 mi n of Lake Madrone. 1463 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  JEPS80654  Mimulus torreyi M. S. Taylor 1981-4-27 3555 Butte ca. 2 mi sw Brush Creek (ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd., ca. 0.5 mi n of Zink Rd.) 1005 Comment
  UCD122938  Mimulus torreyi P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  HSC32412  Minuartia californica R. A. Vanbianchi 1974-4-20 213 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  POM285522  Minuartia californica Lyman Benson 1935-3-27 6359 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  RSA636047  Minuartia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC33106  Minuartia douglasii M. S. Taylor 1981-5-15 3738 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Hwy 70. 1219 Comment
  CHSC13711  Mollugo verticillata M. S. Taylor 1974-10-11 331 Butte On rocky sand bar on Sacramento River, ca. 1/4 mi n of washout, on River Rd, ca. 10 mi w of Chico. Comment
  JEPS122251  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC435068  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte Hills 8 miles north of Oroville Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  SEINET10968986  Monardella lanceolata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10902645  Monardella odoratissima Mary Susan Taylor 1975-6-30 Taylor 816 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  UC175380  Monardella odoratissima subsp. glauca A. A. Heller 1913-7-7 10792 Butte near Stirling 1036 Comment
  UC519258  Monardella odoratissima subsp. glauca H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CHSC52228  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3067 Butte Upper Philbrook cyn, 0.7 mi W of the pass. 1889 Comment
  CHSC52212  Monardella sheltonii L. P. Janeway 1988-7-2 2968 Butte Near the road to French Cr 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC52213  Monardella sheltonii L. P. Janeway 1988-6-25 2888 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC76342  Monardella sheltonii L. P. Janeway 1999-7-17 6504 Butte Steep northwest-facing slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CHSC110443  Monardella venosa B. Castro 2007-5-19 1623 Butte Sacramento Valley. Ca 5.5 air mi SE of town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 70 ft N of creek channel directly under transmission lines. 85 Comment
  RSA724908  Monardella villosa subsp. sheltonii L. P. Janeway 2007-6-26 9075 Butte Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air KM northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC68011  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar, Middle Fork Feather River, on canyon slope adjacent to dirt road at N apex of bend in road. 579 Comment
  UC1562413  Monardella villosa subsp. villosa Lowell Ahart 1990-5-28 6502 Butte South of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  JEPS102709  Montia diffusa Vernon H. Oswald and Lowell Ahart 2001-6-5 10047 Butte Bryant Ravine, near the trailhead to Feather Falls 749 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CAS-BOT-BC444888  Montia fontana A. A. Heller 1914-3-18 11209 Butte Eight miles north of Oroville Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC31881  Montia fontana subsp. chondrosperma L. Ahart 1974-4-7 354 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC260534  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CHSC42437  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 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
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  POM196084  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  UCD86606  Muhlenbergia filiformis H. F. Copeland 1929-6-9 s.n. Butte Jonesville. Comment
  CHSC113475  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC11973  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. On bank of pond. 1750 Comment
  SD271  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville, on gravelly bank of pond, as water retreats during summer 1750 Comment
  CAS-BOT-BC274933  Muhlenbergia rigens A. A. Heller 1923-9-3 13827 Butte At the Phelan Ranch near Chico Comment
  JEPS124199  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC46269  Myosurus apetalus var. borealis Vernon Oswald 1989-4-19 3742 Butte Wurlitzer Unit, Vina Plains Preserve. On the s side of Singer Creek. 57 Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  SEINET3237609  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  UC1069123  Nama lobbii P. L. Johannsen 1936-7-16 918 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  CHSC38860  Nassella pulchra Vernon Oswald 1983-4-9 298 Butte Upper Bidwell Park, Chico, at about the 500 ft level on the north slope 300 ft w of the power lines. Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC65457  Navarretia divaricata subsp. vividior Vernon Oswald 1986-5-6 1999 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CDA34758  Navarretia filicaulis L. Ahart 2009-6-3 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. Comment
  CHSC27034  Navarretia filicaulis Robert A. Schlising 1978-6-11 3290 Butte Cohasset Road, below Cohasset, 5.5 mi NE of crossing of Mud Creek and 5.3 mi above (NE) jct rd to Richardson's Springs; ridge top. Comment
  CHSC36819  Navarretia filicaulis D. H. Ikeda 1980-5-31 391 Butte Cohasset Ridge s of Cohasset. 426 Comment
  CHSC45357  Navarretia filicaulis Vernon Oswald 1986-7-28 2252 Butte Hwy 32 ca. 0.1 mi s of Lomo. Roadside at base of roadcut. 1158 Comment
  CHSC62777  Navarretia filicaulis B. Castro 1993-7-13 478 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along N side of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  RSA699921  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where the road goes east to the water ditch, about 0.5 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC44336  Navarretia heterandra Lowell Ahart 1988-5-12 5997 Butte In a pasture field, about 1/4 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
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  CHSC10727  Navarretia intertexta Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113523  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19596 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  RSA717289  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11826 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  UCD169102  Navarretia prostrata Ramona Robison 2013-4-15 23 Butte Clay Pit State Vehicular Recreation Area. In disturbed vernal pool located in main riding area. 41 Comment
  CHSC91106  Navarretia tagetina Lowell Ahart 2005-5-28 11821 A Butte South edge of Falager Ct., intersection of Falager Ct. and Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  UCD18876  Navarretia tagetina Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 184 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CHSC39042  Navarretia viscidula subsp. purpurea R. A. Schlising 1983-8-6 4431 Butte NE of Oroville Dam. Along Highway 162. 320 Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC42132  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 411 Comment
  RSA337389  Nemacladus interior L. Ahart 1984-6-8 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  SD122582  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown. North side of reservoir 370 Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  SEINET10497054  Nemophila heterophylla Mary Susan Taylor 1979-5-4 Taylor 1994 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10638522 Image available Nemophila pedunculata H. E. Brown 1897-3-3 Brown 173 Butte Clear Creek. Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 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 wewst of the Ponderosa Dam. 289 Comment
  CDA5774  Nicotiana acuminata var. multiflora L. Ahart, Vernon Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC400069  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CDA14775  Nymphaea odorata G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3379 Butte Madrone Lake (Berry Creek). 600 Comment
  CHSC83452  Ophioglossum californicum Lowell Ahart 2003-1-16 10022 Butte Near a wash, open pasture field, Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 68 Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  POM252787  Orthocarpus campestris A. A. Heller 1938-5-13 15078 Butte On US Highway 99E near the Y east of Richvale. Topotype. Comment
  RSA590215  Orthocarpus erianthus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7224 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET10898077  Orthocarpus erianthus Mary Susan Taylor 1980-4-1 Taylor 2415 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  SEINET10549691  Orthocarpus lacerus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5393 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CAS-BOT-BC317161  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  CAS-BOT-BC253701  Panicum capillare Ira L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles W of Chico Comment
  CAS-BOT-BC181181  Paronychia ahartii J. D. Jokerst 1986-6-18 2744 Butte Unsurveyed portion county on the Richardson Spring 7.5 minute USGS topographic map the site is 145 mm from bottom edge of map, not including border, 181mm from left edge. 45 Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  CHSC37391  Paspalum dilatatum R. A. Schlising 1980-8-31 3973 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
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CHSC46853  Pectiantia pentandra R. A. Schlising; P. Broyles 1987-6-26 4525 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 Comment
  JEPS115537  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  UC1586598  Pectocarya pusilla Vernon H. Oswald and Lowell Ahart 1991-5-13 4580 Butte opposite spillway (between Canyon Dr and Oroville Dam Blvd, Dan Beebe Trail); Lake Oroville Recreation Area 213 Comment
  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
  CAS-BOT-BC71202  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CHSC28629  Pellaea mucronata M. S. Taylor 1979-3-19 1935 Butte Ca. 1 1/2 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 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
  UC122749  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1879 83 Butte hills near Cold Canyon Comment
  UC1605504  Pellaea mucronata var. mucronata T. A. Ranker and P. G. Trapp 1994-6-17 1623 Butte s of Paradise (Pence Rd, along pipeline below Kunkel Reservoir); Cherokee Quadrangle 7.5 min topo. map 395 Comment
  UC382581  Pellaea mucronata var. mucronata Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  SEINET10547913  Penstemon azureus Mary Susan Taylor 1980-5-31 Taylor 2776 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  SEINET12320806  Penstemon azureus M. S. Taylor 1980-1 2776 Butte just E of Coutelence Rd at its jct with Skyway 610 Comment
  POM44122  Penstemon azureus subsp. azureus C. C. Bruce 1898-05 2412 Butte Forest Ranch Comment
  SEINET3160230  Penstemon breviflorus L. S. Rose 1940-5-30 40425 Butte Feather River Canyon, 25 mi NE of Oroville 610 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  SEINET10547998  Penstemon heterophyllus subsp. purdyi Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4097 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC44702  Penstemon laetus var. leptosepalus R. Banchero 1980-6-19 257 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC44703  Penstemon laetus var. leptosepalus R. Banchero 1980-6-2 177 Butte Along Hwy 32, ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of the jct of Hwy 32 and Forest Ranch Rd. 609 Comment
  NY604509  Penstemon laetus var. leptosepalus A. A. Heller 1914-6-22 11500 Butte Chico Meadows 1219.2 Comment
  CHSC11885  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  CHSC1873  Penstemon neotericus R. M. Staley 1952-7-4 Butte Butte Creek. Comment
  CHSC31197  Penstemon neotericus M. S. Taylor; R. Schlising 1980-7-6 3078 A Butte On s side of Old Humboldt Rd., beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  UCSB63872  Penstemon neotericus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; on the west 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
  CAS-BOT-BC245684  Penstemon newberryi var. newberryi Lowell Ahart 1980-5-19 2312 Butte Near bridge, South Fork of Feather River, Sierra Nevada 800 Comment
  CAS-BOT-BC245633  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1706 Comment
  SEINET12331900  Penstemon personatus L. Ahart, Ahart, P. 1984-1 4671 Butte about 1/2 mi E of Bald Mtn, about 5 mi NE of Stirling City 1900 Comment
  CAS-BOT-BC239447  Penstemon rydbergii var. oreocharis Frank W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road Comment
  UCD137724  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte north side of Big Chico Creek, Diversion Dam, Upper Bidwell Park, Chico. 243 Comment
  CHSC30368  Pentagramma triangularis J. D. Jokerst 1979-2-23 1132 Butte In the upper reaches of Hollow Cr, Top of North Table Mt., W edge. Comment
  SEINET12326943  Pentagramma triangularis Unknown 1981-1 7 Butte ca 2 mi E of Humboldt Rd & Stillson Canyon Rd intersect. on Humboldt Rd 99 Comment
  CAS-BOT-BC77084  Pentagramma triangularis subsp. triangularis Saichi Kawahara 1968-5-4 378 Butte Paradise - James Ripley's property, Graham Road 640 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  UC122975  Pentagramma triangularis subsp. triangularis Mrs. R. M. Austin 1879-1 Butte Cold Canyon Comment
  UC1609371  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CHSC102818  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC102825  Perideridia oregana Lowell Ahart 2009-6-30 15957 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
  CHSC94016  Perideridia parishii subsp. latifolia R. Fischer 2005-9-5 662 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC73980  Persicaria hydropiper B. Castro 1995-9-10 612 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CHSC113148  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  UC1594635  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below high water line of lake, 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  UC909974  Phacelia mutabilis A. A. Heller 1914-7-23 11600 Butte edge of forest about Chico Meadows 1219 Comment
  CHSC34792  Phacelia procera M. S. Taylor; L. Ahart 1981-8-16 4207 Butte N side of 25N04, near upper Big Kinshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  CHSC46565  Phacelia procera V. Oswald; L. Ahart 1989-7-12 3851 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1926 Comment
  RSA0008811  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte West of Arch Rock Tunnel on Feather River Hwy a mile or two west of Arch Rock Tunnel. Comment
  CHSC99648  Phalaris aquatica H. Jansen 2007-5-2 Butte CSU Chico University Farm (off Hegan Lane). UTM 10 601750E 4395493N. 58 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC27162  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U n Chico State College campus. 60 Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  JEPS123884  Philadelphus lewisii Lowell Ahart 2015-5-5 20144 Butte Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Comment
  SEINET10657662  Phleum pratense Lowell Ahart 1988-6-23 Ahart 6061 Butte Timothy. On damp rocky soil, along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville, Foothill Woodland. 259 Comment
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  CAS-BOT-BC134921  Phoradendron bolleanum Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  SEINET10903286  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1980-2-17 Taylor 2316 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  CHSC85727  Phoradendron densum G. F. Hrusa; T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada. Near summit of serpentine slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 750 Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  CDA22378  Phoradendron libocedri L. Ahart 2000-9-27 8696 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  POM219110  Phoradendron libocedri E. B. Copeland 1931-7-28 s.n. Butte Jonesville. 1500 Comment
  CHSC75550  Phoradendron villosum G. F. Hrusa; T. D. Wilfred 1997-5-7 13733 Butte Serpentine SE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  CAS-BOT-BC140564  Physocarpus capitatus S. Bianco 1995-10-28 S. 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  CHSC52369  Physocarpus capitatus L. P. Janeway 1989-5-17 3251 Butte Near rd to Forbestown Diversion Dam 4.1 mi from Forbestown Rd. 640 Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  JEPS115350  Phytolacca americana Lowell 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 67 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  SD23  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  SEINET10530763  Pinus lambertiana Mary Susan Taylor 1976-2-22 Taylor 999 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  MACF019592  Pinus sabiniana Trudy R. Ericson 1975-9-20 411 Butte St. Hwy. 70, 19 mi. east or Oroville, Plumas National Forest 609 Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC116565  Piperia elongata L. P. Janeway 2015-6-17 11781 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road, 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. Northwest facing slope above the road. 826 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 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
  SEINET10529960  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-10-6 Taylor 3352 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  SEINET10898354  Plagiobothrys Mary Susan Taylor 1981-5-7 Taylor 3640 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  POM126228  Plagiobothrys bracteatus Francis Ramaley 1917-5-6 11215 Butte Near Chico Comment
  HSC85966  Plagiobothrys fulvus J. Hunter 1986-3-5 21 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC32127  Plagiobothrys glyptocarpus L. Ahart 1978-4-27 1667 Butte Along edges of small wash. Peter Ahart Ranch, Honcut. 50 Comment
  UCD18741  Plagiobothrys glyptocarpus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 34 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC46780  Plagiobothrys greenei Lowell Ahart 1980-5-10 2223 Butte On the bottom of a small wash 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. 36 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC29271  Plagiobothrys hispidulus R. A. Schlising 1980-6-2 3627 Butte Northern Butte Co., 0.1 mi s of jct Humboldt Road and Humbug/Skyway at Butte Meadows. Comment
  UC478472  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte near head South Willow Creek (Jonesville); head South Willow Creek, Jonesville 1700 Comment
  UC600448  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC52336  Plagiobothrys leptocladus J. D. Jokerst; V. Oswald 1985-4-14 2232 Butte Top of North Table Mountain north of Cherokee Rd near the easedge of the mesa. 396 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  JEPS124228  Plagiobothrys nothofulvus Lowell Ahart 2015-3-27 19969 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north Oroville. Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  CHSC26798  Plagiobothrys stipitatus M. S. Taylor; H. Hayes 1978-4-14 1566 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC32155  Plagiobothrys stipitatus var. micranthus L. Ahart 1980-5-10 2226 Butte Peter Ahart Ranch, Honcut. On bottom of a small wash in farmed field, ca. 2.5 mi n and 1/4 to 1/2 mi e of Honcut. 50 Comment
  JEPS107340  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
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  JEPS98572  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte 5 mi (air) E of Oroville Dam (sides of old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of the cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC115211  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iorn gate aling Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  SEINET12334063  Plantago bigelovii L. R. Perry 1988-1 9 Butte vic. Salmon Hole, ca 5 mi E of Chico Municipal Golf Course 122 Comment
  JEPS22686  Plantago elongata Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-25 6324 -A Butte 1.25 mi s Wicks Corner (along road from Chico to Oroville) 94 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  CHSC47466  Plantago erecta Lowell Ahart 1978-5-1 1696 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC39524  Plantago lanceolata Lowell Ahart 1983-6-21 4064 Butte Fround growing along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, northeast of Oroville. Section 5. 400 Comment
  CHSC42550  Plantago lanceolata Lowell Ahart 1987-5-6 5531 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. 274 Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  UC600639  Platanthera sparsiflora H. F. Copeland 1930-8-28 Butte Jonesville Comment
  CHSC3332  Platanus racemosa Robert L. Smith 1966-5-23 64 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  CHSC30878  Plectritis macrocera J. D. Jokerst 1979-3-20 1146 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and the E edge of mt. 396 Comment
  JEPS119739  Plectritis macrocera Lowell Ahart 2012-3-23 17790 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CHSC6058  Poa E. Parreno 1968-3-15 41 Butte Right side of rd. leading to Missle Base, side intersecting with Keefer Rd., Chico. Comment
  CAS-BOT-BC244399  Poa annua Lowell Ahart 1973-2-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC113297  Poa annua Lowell Ahart 2014-4-9 19324 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  JEPS122193  Poa annua Lowell Ahart 2014-4-16 19367 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC255683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  UC1609012  Poa howellii Lowell Ahart 1993-6-26 7030 Butte ca 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge); Jackass Flat 1158 Comment
  CAS-BOT-BC255975  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte North Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 3 mi. E of Honcut, Sierra Nevada 50 Comment
  CHSC49567  Poa pringlei Vernon Oswald 1983-8-17 995 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2023 Comment
  RSA300149  Poa secunda J. T. Howell, Gordon H. True 1967-5-9 42233 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  CHSC8252  Poa secunda subsp. secunda M. Banning 1969-4-18 81 Butte Table Mt., 1/2 mi. S. of Oregon City junction along road. 487 Comment
  UCD91621  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  UC762123  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 mi. SW of Oroville Comment
  CHSC33851  Pogogyne zizyphoroides Don Kroessig 1979-4-16 1 Butte On the e side of Hwy. 149, 1.3 mi. n of intersection with Hwy. 70, nw of Oroville. 76 Comment
  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  HSC66211  Pogogyne zizyphoroides Jane A. Rogers 1979-4-17 13 Butte Intersection of Hwy. 99E and Broyles Rd., 11 mi. N of Chico 55 Comment
  RSA0022164  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Roads intersection, 1 mile NW Hwy. 70. 61 Comment
  UCSB64008  Polycarpon tetraphyllum Ahart, Lowell 1976-6-27 Butte Along North Honcut Creek; about 3/4 mile north and 2 1/2 miles east of Honcut; about 12 miles south of Oroville 36 Comment
  CHSC35755  Polygala cornuta R. E. Preston 1982-6-6 296 Butte Ridgetop, 1 mi e of Magalia. 762 Comment
  CHSC40392  Polygala cornuta Lowell Ahart 1985-6-30 5081 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UCD109713  Polygala cornuta L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET11263758  Polygala cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi se of Paradise on Pentz Road.; 0 427 Comment
  JEPS87156  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  RSA726857  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road., About 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 686 Comment
  SEINET10871688  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4364 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC46195  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1913 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CAS-BOT-BC414192  Polygonum aviculare subsp. depressum Lowell Ahart 1987-9-24 5893 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD99854  Polygonum bidwelliae F. T. Griggs 1978-5-31 s.n. Butte East of Rifle Range, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC109153  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  CHSC60761  Polygonum californicum Vernon H. Oswald; Lawrence P. Janeway 1993-6-6 5490 Butte S of Jarbo Gap on Dark Canyon Rd., ca. 0.1 mi N of the ramp into Lake Oroville. 289 Comment
  CAS-BOT-BC414370  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  SEINET11930160  Polygonum californicum Unknown 1981-1 3216 Butte Peter Ahart Ranch, about 1.5 mi N and 1.75 mi E of Honcut, about 12 mi S of Oroville 46 Comment
  UC466040  Polygonum californicum Mrs. R. M. Austin May 1883 14 Butte mesa near Chico Comment
  CAS-BOT-BC414423  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  NY323770  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  SEINET10479654  Polygonum lapathifolium Lowell Ahart 1990-10-3 Ahart 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 244 Comment
  CHSC39131  Polygonum minimum R. A. Schlising; R. Banchero 1980-7-14 3904 Butte N end of county, N of Snag Lake. 1731 Comment
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  SEINET13711418  Polygonum persicaria Lowell William Ahart, Lowell William Ahart 1999-1 8270 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC103173  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  RSA0035340  Polygonum punctatum Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC44134  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally common in loose, gravelly soil on a scree slope somewhat below the n edge of the ridge. 2097 Comment
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 Comment
  SEINET11715827  Polypodium californicum J. D. Mott 1978-1 13 Butte West Branch Feather River 280 Comment
  CAS-BOT-BC71860  Polypodium californicum Sam M. Grossberg 1978-4-21 14 Butte ca. 0.6 mi. WNW of Highway 32, 9.2 mi NE of Chico 350 Comment
  CAS-BOT-BC71871  Polypodium californicum Lowell Ahart 1990-3-19 6419 Butte south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 36 Comment
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC94854  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  JEPS113227  Polypodium calirhiza Lowell Ahart 2007-5-16 13892 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel.1 480 Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  CHSC42399  Polypogon australis Lowell Ahart 1987-6-9 5730 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
  CHSC47632  Polypogon monspeliensis Lowell Ahart 1982-7-18 3681 Butte Along the sides and bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD91374  Polypogon monspeliensis R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC34677  Polystichum imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 1.2 mi n of its jct with Forbestown Rd, ca. 10 mi ne of Oroville. 396 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CAS-BOT-BC72300  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-7-24 4213 Butte on the road cutbank at the Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC113580  Polystichum imbricans subsp. imbricans Lowell Ahart 2014-8-24 19722 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC86425  Polystichum imbricans subsp. imbricans Paul Maslin 2004-1-1 1 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. 381 Comment
  JEPS122335  Polystichum imbricans subsp. imbricans Lowell Ahart 2014-8-24 19722 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  CHSC34244  Polystichum munitum M. S. Taylor 1981-5-29 3810 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC37655  Polystichum munitum T. B. Devine 1981-8-25 758 Butte Beside Hwy 70 near Bear Ranch Creek, along N Fork of Feather River near Cresta. 426 Comment
  SEINET10530127  Polystichum munitum Mary Susan Taylor 1981-5-29 Taylor 3810 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  SEINET6409502  Polystichum munitum J. Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks 610 Comment
  CHSC77445  Populus fremontii subsp. fremontii Tim Stofer 1997-4-29 30 Butte Located 50 ft from the enterance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  UCD169275  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC45741  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-13 2208 Butte Along Dogwood Cr; rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CHSC54487  Potentilla glandulosa subsp. reflexa Vernon H. Oswald; Lowell Ahart 1991-7-15 4733 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 1.3 miles east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. Roadcut. 1097 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC33661  Primula suffrutescens R. Schlising; R. Preston, R. Banchero, D. Burk. 1981-7-21 Butte SE of Jonesville in NE part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52063  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 148 Butte 0.95 mi into Coon Hollow below Campground, by edge of Coon Creek and on edge of adjacent meadow. 1664 Comment
  SFV5828  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  JEPS107334  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CAS-BOT-BC357007  Pseudognaphalium luteoalbum John Thomas Howell 1959-9-20 34619 Butte Eastern outskirts of Oroville in lower foothills 60 Comment
  CAS-BOT-BC357589  Pseudognaphalium stramineum Lowell Ahart 1980-5-4 2184 Butte Thermalito 65 Comment
  CHSC33644  Pseudognaphalium thermale M. Merryman; R. Banchero 1979-9-2 25 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. Roadside fill. 950 Comment
  CHSC65445  Pseudognaphalium thermale Vernon Oswald 1987-7-29 3156 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  UCD135260  Psilocarphus brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch. 50 Comment
  UCD135277  Psilocarphus brevissimus W. R. Powell 1968-4-23 1473 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC116694  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2016-5-17 20838 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC28147  Psilocarphus oregonus Robert A. Schlising; Ellen Sanders 1979-4-29 3378 Butte Richvale vernal pools, 1/4 mi n of jct Hwy 99 and Hwy 162 to Oroville; across from Thermalito Afterbay. Only in pools close to Hwy 99. Comment
  CHSC38348  Psilocarphus tenellus var. tenellus Vernon Oswald 1983-4-25 379 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Near a jeep trail. 359 Comment
  CHSC29096  Pteridium aquilinum var. pubescens M. S. Taylor; J. D. Jokerst 1980-4-27 2549 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CAS-BOT-BC6298  Pterospora andromedea Edwin Bingham Copeland 1931-7-15 668 Butte Jonesville Comment
  CHSC29709  Pterostegia drymarioides J. D. Jokerst 1980-4-21 626 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  SEINET10454558  Pteryxia terebinthina var. californica Mary Susan Taylor 1979-7-21 Taylor 2160 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC97336  Pycnanthemum californicum L. P. Janeway 2007-8-6 9152 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Large patch of this on slope next to east side of pond. 776 Comment
  UC105955  Pyrola asarifolia Mrs. R. M. Austin Jul 1896 586 Butte Colby Comment
  CHSC51870  Pyrola dentata L. P. Janeway 1988-7-2 2971 Butte At Coyote Gap. 1280 Comment
  JEPS93940  Pyrola dentata Vernon H. Oswald and Lowell Ahart 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Road 1463 Comment
  CDA13242  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-8 13089 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CAS-BOT-BC94691  Quercus X howellii John Thomas Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC94693  Quercus X howellii John Thomas Howell 1955-6-15 30498 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC600520  Quercus chrysolepis H. F. Copeland 1920-7-26 335 Butte Jonesville Comment
  UCR231084  Quercus chrysolepis Anna M. Hurlbutt 2009-8-12 016 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CHSC101332  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC86633  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte Hills two miles N of Oroville Comment
  UCD45957  Quercus durata var. durata Clarence R. Quick 1961-9-21 61 38 Butte West Branch of N. Fork of Feather River, Butte Co. Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  CHSC76054  Quercus garryana var. semota G. F. Hrusa; T. D. Wilfred 1997-5-7 13738 Butte Sierra Nevada. On SE-facing slopes facing Little Butte Creek above Magalia Reservoir, N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 725 Comment
  CAS-BOT-BC105142  Quercus kelloggii John Thomas Howell 1962-6-15 37438 Butte Magalia 731 Comment
  JEPS115710  Quercus kelloggii Lowell Ahart 2009-6-3 15812 Butte On the north edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  UC141898  Quercus lobata Mrs. R. M. Austin Apr 1896 774 Butte near Chico Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UC143209  Quercus wislizeni Mrs. R. M. Austin Apr 1896 781 Butte near Chico Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC48698  Ranunculus aquatilis var. aquatilis Vernon Oswald 1987-8-10 3205 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the edge of the largest lake. 1935 Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 Comment
  CHSC29235  Ranunculus hebecarpus M. S. Taylor 1980-4-1 2424 Butte On bluffs above Covered Bridge and s of Butte Creek, ca. 5 mi e of Chico. 182 Comment
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  CHSC46846  Ranunculus muricatus Kirsten Tarp 1983-4-3 256 Butte S part of county at Bangor. In lawn in front of the Bangor fire station. 228 Comment
  JEPS119711  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS122012  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  UCD97034  Ranunculus occidentalis var. ultramontanus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC52695  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC38035  Raphanus raphanistrum R. E. Preston 1982-11-13 366 Butte Along sides of Chico-Butte City Hwy, ca. 13 1/2 mi ssw of Chico. 30 Comment
  SEINET13946194 Image available Rhamnus californica A. A. Heller, H. E. Brown 1902-1 5468 Butte Berry Canton, (Near Clear Creek) Comment
  CDA35703  Rhamnus californica subsp. californica L. Ahart 2002-6-2 9679 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CHSC34038  Rhamnus ilicifolia L. Ahart 1981-7-7 2917 Butte On dry rocky granite soil along the edge of the rd near the rd to the Oak Grove Cemetary, ca. 1/4 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd, w of Forbestown. 600 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  UC725528  Rhamnus ilicifolia A. A. Heller 1939-4-10 15375 Butte grade above Rock Creek Comment
  CDA13732  Rhamnus purshiana var. purshiana G. F. Hrusa, T. D. Wilfred 1997-6-27 13910 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  JEPS88908  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
  SEINET10493611  Rhamnus rubra subsp. obtusissima Mary Susan Taylor 1980-5-8 Taylor 2601 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
  CHSC39674  Rhamnus tomentella subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville-Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CHSC83010  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte Meadow, 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 753 Comment
  CHSC6016  Rhododendron M. MacArthur 1968-6-19 254 Butte Along wall of CAC, Chico State College. 60 Comment
  CDA13317  Rhododendron occidentale G. F. Hrusa, T. D. Wilfred 1996-7-9 13163 Butte Sierra Nevada; Moist, shaded bank of Jordan Creek, near old Picnic Area above waterfall upstream from confluence with Marble Creek. Shrub, 3 meters tall. Flowers fragrant. Few here. Comment
  CHSC37553  Rhododendron occidentale T. B. Devine 1977-6-5 418 Butte DeSabla. 853 Comment
  CAS-BOT-BC168023  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte In openings south of Oregon Gulch Road, about 1/2 mile north of the [Cementery] Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  POM87358  Rhus trilobata var. pilosissima C. C. Bruce 1897-05 1819 Butte Little Chico Comment
  CHSC44063  Rhynchospora californica L. P. Janeway 1988-6-14 2761 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  RSA500435  Rhynchospora californica Vernon H. Oswald 1985-7-10 1895 Butte Upper Bidwell Park, Chico, 200 ft S of Upper Park Rd., 2 miles NE of Salmon Hole. 183 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  CHSC11906  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC1658  Ribes inerme var. klamathense T. Morgue 1932-5-3 Butte Concow Reservoir. 579 Comment
  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  UC176366  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC36359  Ribes roezlii J. D. Jokerst 1982-5-19 1578 Butte One-half air miles N of Camp 18 on road to Fall River Campground. 1158 Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  RSA0024708  Ribes roezlii H. F. Copeland 1928-8-18 346 Butte Neighborhood of Jonesville. 1524 Comment
  RSA0024710  Ribes roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville. 1524 Comment
  CAS-BOT-BC198963  Ribes roezlii var. roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC116964  Robinia pseudoacacia Matthew Forster 2013-4-9 Butte Centerville Rd., along Flumes Trail. 335 Comment
  CHSC84626  Robinia pseudoacacia Robert Katz 2002-4-23 Butte Located 50 ft from Hwy 32 5 miles west of Forest Ranch, at the 'Green Gate,' 5-10 ft on the southwest side. Comment
  CAS-BOT-BC74467  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  CHSC83025  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS114453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2008-5-8 14714 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
  SEINET260316  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1986-11-9 5451 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam 1/4 mi ESW of Oroville 1/4 mi E of Larkin Rd 37 Comment
  CHSC31640  Rorippa nasturtium-aquaticum L. Ahart 1977-5-8 1356 Butte On the bottom of a wash, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90597  Rorippa nasturtium-aquaticum S. B. Collom 1988-4-25 15 Butte Chico, 100 yds east of the 5th Street bridge, in Lindo Channel, on north side. 60 Comment
  CHSC91260  Rosa bridgesii L. P. Janeway 2005-5-29 8402 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  HSC97352  Rosa californica J. P. Smith, J. O. Sawyer 2007-9-2 12414 Butte Junction of Central House Rd. and State Rte. 1919 265 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC38650  Rosa multiflora Vernon Oswald 1983-5-11 464 Butte Upper Bidwell Park, Chico, along the s bank of Chico Creek ca. 1000 ft. e of the footbridge at Five Mile Recreation Area. 83 Comment
  CHSC6629  Rosa spithamea M. MacArthur 1968-6-17 301 Butte NW yard of Building U on the Chico State College campus. 60 Comment
  CAS-BOT-BC148253  Rosa woodsii var. ultramontana A. A. Heller 1928-7-10 14654 Butte Wet meadows at Butte Meadow in the yellow pine belt. Comment
  CAS-BOT-BC274230  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC28475  Rotala ramosior R. A. Schlising 1979-10-14 3508 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  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
  CHSC52470  Rubus armeniacus L. P. Janeway 1987-5-20 2067 Butte Turnout and seepy area on E side of Hwy 70 just S of the 'Rock House' and 0.5 mi S of Jarbo Gap. 670 Comment
  SEINET10483860  Rubus armeniacus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4716 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC156609  Rubus bifrons Javier Penalosa 1962-6-18 2455 Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC30769  Rubus glaucifolius M. S. Taylor 1980-9-12 3329 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft w of the Hwy, n of a dirt rd. 975 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC48871  Rubus leucodermis Vernon Oswald 1984-5-21 1194 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.25 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  CAS-BOT-BC147358  Rubus pensilvanicus John Thomas Howell 1962-6-15 37451 Butte Magalia 731 Comment
  CHSC1606  Rubus ursinus R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  UC600493  Rumex acetosella H. F. Copeland 1929-6-10 Butte Jonesville Comment
  SEINET11930159  Rumex conglomeratus Unknown 1982-1 3635 Butte Ahart Ranch, about 2 1/4 mi N and 1/4 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  CHSC116022  Rumex crispus Lowell Ahart 2015-10-20 20574 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
  CHSC111171  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. About 60 yards west of Parking Lot 14. 19 Comment
  CHSC28002  Rumex obtusifolius subsp. agrestis M. S. Taylor 1978-7-21 1824 Butte On s side of Oroville-Quincy Hwy by creek, ca. 14 mi n of Lake Madrone. 914 Comment
  CHSC100897  Rumex salicifolius var. salicifolius R. A. Schlising; Lawrence Janeway 1988-8-2 4655 Butte Northern Butte County, north of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. 1139 Comment
  CHSC28981  Sagina decumbens subsp. occidentalis R. A. Schlising 1980-3-22 3518 Butte E of Chico, off Humboldt Road. Vernal pool edges. 79 Comment
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113284  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  CHSC45310  Sagittaria sanfordii Vernon Oswald 1988-10-23 3709 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  UC478535  Salix boothii E. B. Copeland 1931-6-11 623 Butte Kirby's Meadow Jonesville (Field No. 314) 1750 Comment
  SBBG126102  Salix exigua L. Ahart 2012-6-5 18170 Butte N side of crk, bottom of Beatson Hollow, ca 1 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 280 Comment
  POM218987  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CDA38813  Salix gooddingii L. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  CHSC108851  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CAS-BOT-BC129623  Salix lasiolepis var. lasiolepis John Thomas Howell 1959-9-20 34658 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC9696  Salix lasiolepis var. sandbergii E. L. Smith 1971-9-12 1068 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  UC176385  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte w. branch N. Fork Reather R. near Stirling; w. branch N. Fork Reather R. 914 Comment
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Jul 5 2010
  CHSC90250  Salvia sonomensis M. K. Hancharick 1989-4-18 11 Butte Population ca. 150 yds se of junction Cohasset and Vilas Roads ca. 12 mi e of Chico. 609 Comment
  UC1124851  Salvia sonomensis H. A. Jensen 1934-10-26 390 Butte Cohasset Ridge (Keefer Ridge on map); Chico Quad. 548 Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  JEPS98675  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC45732  Sanicula bipinnata Troy Griffiths 1988-3-8 64 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  CHSC45733  Sanicula bipinnata J. S. Peterich 1988-3-8 7 Butte On Cohassset rd. ca. 70 m. w. of entrance to Richardson Springs, Chico. 90 Comment
  SEINET12120678  Sanicula bipinnata C. S. Armor 1974-1 48 Butte N side of Covered Bridge on Humbug Rd, ca 3 mi E of Hwy 99, Chico 122 Comment
  SEINET12121443  Sanicula bipinnata S. E. Bigbee 1984-1 35 Butte ca 50 yds S of Butte Creek & ca 320 yds W of Covered Bridge, 6.2 i ESE of Chico 121 Comment
  CHSC87546  Sanicula bipinnatifida R. D. Fischer 2004-3-5 69 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 300 ft south of Pine Trail junction. 399 Comment
  UC566789  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3713 Butte ne of Oroville (Table Mountain, Cherokee Mine); Table Mountain, Cherokee Mine Comment
  CAS-BOT-BC223243  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Near Paradise Comment
  POM133572  Sanicula bipinnatifida A. A. Heller, H. E. Brown 1902-5-12 5539 Butte Grade between Clear Creek and Paradise. Comment
  UCD127926  Sanicula bipinnatifida L. Ahart 1978-4-13 1633 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC10541  Sanicula bipinnatifida var. flava Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  POM82730  Sanicula crassicaulis C. C. Bruce 1897-06 2060 Butte Little Chico Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  CHSC46328  Sanicula tuberosa Lowell Ahart 1989-5-29 6326 Butte On a lava cap, near the dirt road, east of Mooreville Ridge, about 2 air miles north of the Lost Creek Dam, south of the west branch of Pinkard Creek. 1188 Comment
  CHSC34179  Saponaria officinalis L. Ahart 1981-9-15 3161 Butte Below the rd, ca. 1 mi n of Lost Creek Reservoir and a little w of Pinkard Creek, ca. 1 mi w of Sly Creek Reservoir. 1200 Comment
  SEINET10838425  Saxifraga californica Mary Susan Taylor 1980-4-18 Taylor 2517 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  POM196050  Saxifraga oregana H. F. Copeland 1929-06 1240 Butte Jonesville. 1524 Comment
  UC1602228  Saxifraga oregana H. F. Copeland jun 1929 1240 Butte Jonesville 1524 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
  CHSC3979  Scandix pecten-veneris E. P. Parreno 1967-4-10 Butte Ca. 400 yards upstream from Covered Bridge. Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10502775  Scirpus Mary Susan Taylor 1980-6-7 Taylor 2790 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 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
  CHSC40416  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 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
  UCD80611  Scribneria bolanderi CNPS SN Foothill Team 2005-3-30 SNFN 0029 b Butte CDFG North Table Mountain Wildlife Area, Table Mt. Ecological Reserve, approximately 500 m E of the parking area off Cherokee Road. 381 Comment
  SEINET10836220  Scribneria bolanderi Lowell Ahart 1985-5-10 Ahart 4959 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC74680  Scutellaria californica Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CAS-BOT-BC415021  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CHSC94240  Sedum spathulifolium Lowell Ahart 2006-5-10 12627 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CAS-BOT-BC63850  Sedum spathulifolium C. C., Mrs. Bruce 1895-6-1 s.n. Butte Butte Creek Comment
  UC1410118  Sedum spathulifolium Elizabeth McClintock 1965-4-4 Butte canyon of the west fork of the North Ford of the Feather River canyon of the west fork North Ford Feather River 365 Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  UCD69268  Selaginella asprella D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Parkhill-Pulga near Pulga Road. 520 Comment
  CHSC21  Selaginella hansenii J. Cowan 1943-3-22 Butte Salmon Hole. 243 Comment
  CAS-BOT-BC62121  Selaginella hansenii Lowell Ahart 1979-4-3 s.n. Butte near N Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC62123  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Chico quad, along small rd off Stillson Canyon Rd (leading to Mannion Property), ca. 3 mi sse of Chico 152 Comment
  SEINET10530438  Selaginella hansenii Mary Susan Taylor 1980-2-24 Taylor 2322 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  HSC66272  Selaginella wallacei M. S. Taylor, J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Junction of Rocky Honcut Creek and Swedes Flat Rd., 2 mi. E of Oroville-Bangor Hwy., 10 mi. SE of Oroville 366 Comment
  CAS-BOT-BC363240  Senecio M. S. Taylor 1976-5-3 1100 Butte Ca. 2 ft e of Bald Rock Rd, ca. 50 ft n of jct of Oroville-Quincy Hwy & Bald Rock Rd, ca. 13 mi ne of Oroville 914 Comment
  CHSC86445  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 97 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
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC418  Senecio vulgaris J. Turner 1930-4-3 Butte Chico. 57 Comment
  CHSC45011  Senecio vulgaris Lowell Ahart 1977-3-29 1233 Butte In the borrow area, about 5 air miles south-west of Oroville. 30 Comment
  CHSC28431  Sericocarpus oregonensis M. S. Taylor 1979-9-28 2196 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  JEPS76247  Setaria gracilis W. L. Jepson 1939-8-17 19456 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
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Jun 29 2007
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  JEPS127628  Setaria parviflora B. Castro 2008-7-15 1758 Butte 2 mi W of Hwy 99 and 1 mi SE of Richvale, and NE corner of Cherokee Canal and Richvale Hwy. Comment
  CAS-BOT-BC240120  Setaria pumila John Thomas Howell 1961-9-22 36765 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC47641  Setaria sphacelata Lowell Ahart 1977-8-14 1551 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC44428  Sherardia arvensis Lowell Ahart 1988-6-23 6074 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS87674  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  UC1594532  Sibara virginica Lowell Ahart 1992-4-17 6747 Butte about 1 1/4 mi s Butte City Highway (e side of Goodspeed Watt Road); s of Butte City Highway 30 Comment
  UC1530701  Sibara virginica Lowell Ahart 1985-3-14 4846 Butte about 1 1/2 mi n and 1 mi e Honcut (Peter Ahart Ranch, about 12 mi s of Oroville); n of Honcut, s of Oroville, Peter Ahart Ranch 50 Comment
  CHSC34961  Sidalcea calycosa R. A. Schlising 1979-6-4 3440 Butte S of Cohasset, off Cohasset Road. Comment
  RSA702150  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trial and Pine. Comment
  UC1755046  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  SFV2294  Sidalcea hartwegii M. L. Vincent 1962-4-17 199 A Butte Sierra Nevada 4 miles south of Paradise at Kunkel Reservoir. 450 Comment
  CHSC31759  Sidalcea hirsuta L. Ahart 1978-5-15 1723 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS94724  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC27703  Sidalcea robusta Robert A. Schlising 1978-5-29 3282 Butte Bidwell Park, Chico; on slopes north and east of golf course and old rifle range, near end of paved road. 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
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS113187  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  CHSC81483  Silene laciniata subsp. californica Julie Rose 2000-4-25 90 Butte 6.8 miles on Hwy 32 East to Green Gate. About a quarter mile down the trail. 365 Comment
  CAS-BOT-BC389290  Silene lemmonii Lowell Ahart 1983-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls 600 Comment
  JEPS98990  Sinapis alba Lowell Ahart 2001-4-15 8723 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
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC101145  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC46348  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC31639  Sisyrinchium bellum L. Ahart 1977-5-20 1385 Butte Along edge of a small wash. Peter Ahart Ranch, Honcut. 60 Comment
  CHSC44521  Sisyrinchium bellum Lowell Ahart 1988-4-30 5971 Butte Near a small stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 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
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  UC725582  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 1524 Comment
  UC119624  Smilax californica Mrs. R. M. Austin April 1883 284 Butte Big Chico Comment
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CHSC1933  Solanum elaeagnifolium V. Holt 1931-6-1 Butte Paradise. 548 Comment
  CDA41197  Solanum parishii L. Ahart 2006-5-19 12633 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  NY821124  Solanum parishii H. M. Edwards 06 1917 s.n. Butte De Sabla Comment
  CHSC1939  Solanum umbelliferum Garnett-Durbrow 1928-3-18 Butte Iron Canyon, Chico Creek. 152 Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center 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
  CHSC424  Sonchus oleraceus J. Turner 1930-5-14 Butte Chico Creek road. 76 Comment
  JEPS117702  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 260 Comment
  CHSC108150  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. In an open graveled area. 912 Comment
  SEINET11787803  Sparganium emersum L. P. Janeway 1987-1 2248 Butte Mdw on Pinkard Cr between Lewis Ridge & Moorville Ridge, 6.5 mi from Challenge-LaPorte Rd & Travis 1082 Comment
  CHSC49689  Sparganium emersum subsp. emersum Vernon Oswald 1987-6-23 3017 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. In a gravel pit. 1889 Comment
  CHSC11060  Spergula arvensis subsp. arvensis Lowell Ahart 1970-2-24 Butte Near Honcut. 45 Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  JEPS103601  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte 7 air mi S of Oroville (E side of Lone Tree Road, 1 1/8 mi N of Cox Lane, 3 air mi SW of Palermo) 35 Comment
  RSA0098132  Spergularia rubra L. Ahart 2008-5-8 14712 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC149642  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  JEPS120832  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  JEPS121975  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte About 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM196150  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville. 1500 Comment
  RSA700394  Spiraea douglasii L. Ahart 2004-8-2 11331 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  SEINET10499273  Stachys pycnantha Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4233 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  CHSC113463  Stellaria crispa Lowell Ahart 2014-7-16 19689 Butte Along the south edge of a large wet meadow (some bog), about 110 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC230  Stellaria media S. Carter 1929-4-22 Butte Chico Street. 59 Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  CAS-BOT-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  CAS-BOT-BC398213  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3075 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. 1935 Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC11835  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  CAS-BOT-BC375763  Stephanomeria virgata Lowell Ahart 1981-7-18 2939 Butte 4.5 miles southwest of Oroville 35 Comment
  CHSC51360  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1990-9-4 4445 Butte Feather Falls Trail on the approach to the overlook. 609 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA0038270  Stipa californica E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10508399  Stipa pulchra Mary Susan Taylor 1979-5-4 Taylor 1997 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  SEINET10841528  Streptanthus campestris Lowell Ahart 1983-8-16 Ahart 4283 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC71167  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC33405  Streptanthus longisiliquus R. E. Preston 1981-7-8 100 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 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
  JEPS110269  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  UC1586579  Streptanthus polygaloides Vernon H. Oswald and Lowell Ahart 1991-6-5 4648 Butte dirt road to Minnie-Ha-Ha Mine (on w side of Hwy 32 ca 1.5 air mi nw of Platte Mtn Lookout, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SEINET10448516  Streptanthus polygaloides Mary Susan Taylor 1981-5-15 Taylor 3737 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  SEINET10448523  Streptanthus tortuosus Mary Susan Taylor 1976-4-24 Taylor 1071 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
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. 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-BC48058  Styrax redivivus M. S. Taylor 1976-5-3 1105 Butte Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte 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
  CHSC13803  Symphyotrichum chilense K. R. Stern 1972-9-19 3780 Butte Dry margins of Perkins Lake, Llano Seco Rancho, ca 10 mi SW of Chico. Comment
  CAS-BOT-BC99044  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  CHSC64035  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-8-4 720 Butte Chico Meadows. On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC726092  Symphyotrichum spathulatum A. A. Heller 1928-7-25 14697 Butte Jonesville and Butte Creek House Comment
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC3159  Tauschia hartwegii Dona Kingsford 1966-3-31 Butte Location: .5 mi from 4th. Street entrance of Bidwell Park, Chico. Comment
  JEPS127026  Tauschia kelloggii Lowell Ahart 2016-6-4 20929 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  UC1532344  Tauschia kelloggii Vernon Oswald 1986-4-29 1989 Butte Rim Rd. (Ponderosa Way) 3.5 mi n Jarbo Gap (on Hwy 70) 853 Comment
  CHSC83  Taxus brevifolia McCarthy; Kasak 1931-6-5 Butte Halfway House between Magalia and Camp l. 762 Comment
  CHSC48910  Tellima grandiflora Vernon Oswald 1984-4-9 1132 Butte Feather Falls Trail, 2.1 trail mi. from the trail head at the end of Bryant Ravine Rd. 457 Comment
  CHSC27970  Thalictrum fendleri M. S. Taylor 1978-7-19 1758 Butte On w side of Upper Scotts John Rd, ca. 3 1/2 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC46852  Thalictrum fendleri Kirsten Tarp 1982-7-21 216 Butte Philbrook Reservoir. 1706 Comment
  UCD93334  Thinopyrum ponticum Beecher Crampton 1971-3-30 8666 Butte 4 miles SW of Oroville. Comment
  CHSC3598  Thysanocarpus curvipes Gerry Carrauthers 1966-2-28 31 Butte Ca. 3 mi N.E. of Bidwell Golf Course and ca. near Salmon Hole of Chico Creek. 8 mi N.E. of city of Chico. Comment
  JEPS115293  Thysanocarpus curvipes Lowell Ahart, John Dittes 2009-3-20 15500 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  JEPS43467  Thysanocarpus curvipes Joan Danielson 1966-4-6 22 Butte Cherokee Road just past Oregon Gulch Road 609 Comment
  SFV1538  Thysanocarpus curvipes M. L. Vincent 1961-3-28 13 Butte Sierra Nevada Skyway on road from Paradise to Chico; overlooking "Little Grand Canyon." Dry mesa. 215 Comment
  CAS-BOT-BC88215  Thysanocarpus curvipes Lowell Ahart 1977-4-28 s.n. Butte 8 miles southeast of Feather Falls. 1000 Comment
  HSC23288  Thysanocarpus curvipes D. C. Polen 1971-4-8 27 Butte 10 mi. N of road, 0.6 mi. E on Skyway from its junction with Hwy. 99E Chico 70 Comment
  CHSC36700  Thysanocarpus curvipes var. curvipes Jan Rumore 1982-4-15 2 Butte Ca. 1.2 mi e of Forest Ranch, 50 ft. below top of canyon wall. Upper canyon. 670 Comment
  CHSC35008  Thysanocarpus curvipes var. elegans R. E. Preston 1982-2-25 180 Butte Ravine of Chico Creek at former diversion dam, Upper Bidwell Park; ca. 5.5 mi ene of downtown Chico. 91 Comment
  CAS-BOT-BC67297  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. Comment
  HSC32402  Thysanocarpus radians Gary S. Lester 1974-4-20 109 Butte Cherokee-Table Mtn. Rd. 305 Comment
  CHSC27270  Tilia americana P. Moyer 1972-6-5 226 Butte S side Chico Ck. next to curb of So-Wil-Len-No Ave., n of Ed-Psych. Bldg. 60 Comment
  SEINET10454777  Torilis heterophylla Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4111 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill