Search Results — 2000 specimen records retrieved (1587 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CAS-BOT-BC73554  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280 Comment
  CHSC28644  Abies concolor M. S. Taylor 1979-3-31 1964 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC34968  Abutilon theophrasti R. A. Schlising 1981-9-26 4208 Butte West of Chico along Sacramento Avenue; just west of Mud Creek. Comment
  UCD116173  Abutilon theophrasti P. B. Kennedy 1922-1 s.n. Butte Oroville. Comment
  CHSC111733  Acer circinatum Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 B Butte About 50 yards south of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CHSC51842  Acer circinatum L. P. Janeway 1988-7-2 2938 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  SEINET10973037  Acer circinatum Mary Susan Taylor 1979-10-5 Taylor 2224 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
  SBBG28938  Acer glabrum E. B. Copeland 1930-6-28 Butte Jonesville 2100 Comment
  CHSC26837  Acer glabrum var. torreyi M. S. Taylor 1978-6-24 1649 Butte Humboldt Summit, Butte Co and Tehama Co. line. 2133 Comment
  CAS-BOT-BC331607  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CHSC103953  Acer macrophyllum Lowell Ahart 2010-5-23 16732 Butte On the west side of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 Comment
  CAS-BOT-BC210639  Achnatherum lemmonii R. A. Schlising 1978-4-23 3229 Butte Magalia; just s of the Magalia Reservoir (just w of S. T. RR and Coutelenc Road) Comment
  CDA13884  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-8 13742 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC101796  Achnatherum lemmonii Lowell Ahart 2009-5-15 15686 Butte 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
  CHSC33785  Achnatherum lemmonii M. S. Taylor 1981-4-10 3522 Butte Ca. 50 ft up from creek, ca. 1/4 mi n of Pine Cluster Ranch, between Concow Rd and a large oak-covered knoll, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 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
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  UC1133083  Achnatherum occidentale subsp. californicum P. L. Johannsen 1936-7-17 938 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  CHSC33954  Achnatherum stillmanii M. S. Taylor; L. Ahart 1981-8-15 4178 Butte Both sides of Skyway, 1.8 mi s of Inskip. 1249 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  JEPS118485  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  SEINET221365 Image available Achnatherum stillmanii Lowell Ahart 1980-9-10 Butte Little Bald Rock 1100 Comment
  CAS-BOT-BC29946  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  CHSC33374  Achyrachaena mollis Alisa Goldman 1980-4-23 20 Butte North of Chico. 57 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC28476  Acmispon americanus var. americanus Robert Schlising 1979-8-17 3467 Butte Richvale vernal pools. 1/4 mi s of jct hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC46221  Acmispon argophyllus var. fremontii Pauleen Broyles 1987-6-19 1056 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC96840  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC39499  Acmispon brachycarpus Lowell Ahart 1983-5-28 4022 Butte Above the trail to the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC50668  Acmispon glaber Lowell Ahart 1990-5-21 6474 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC50549  Acmispon nevadensis var. nevadensis Vernon Oswald; Lowell Ahart 1990-7-5 4349 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC42557  Acmispon parviflorus Lowell Ahart 1987-5-6 5522 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC398914  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  CHSC55251  Aconogonon phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte Along the edges of Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 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 intlet of the large lake. 1935 Comment
  UC699686  Actaea rubra H. F. Copeland 1932-8-16 Butte Butte Creek Comment
  CHSC90242  Adenostoma fasciculatum T. H. Watroba 1989-4-18 20 Butte Ca. 50 yds e of Cohasset Rd., Cohasset Ridge, 8 mi nne of Chico. 548 Comment
  CAS-BOT-BC65620  Adiantum jordanii Saichi Kawahara 1968-5-4 368 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  HSC66338  Adiantum jordanii M. S. Taylor 1980-4-1 2422 Butte S side of Butte Cr. near Covered Bridge 6 mi. E of Chico 122 Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET7728134  Adiantum pedatum Unknown 1883-1 Butte Chico Comment
  CDA1674  Aegilops triuncialis L. Ahart 2000-5-16 8357 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CDA415  Aegilops triuncialis L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 of a mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. Comment
  CHSC78084  Aesculus californica April Glover 1997-4-4 27 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32. 390 Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC5988  Agapanthus africanus M. MacArthur 1968-6-12 136 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus, Chico. 60 Comment
  CHSC44367  Agoseris heterophylla Lowell Ahart 1988-5-30 6025 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC63528  Agoseris heterophylla Vernon Oswald 1994-4-14 6109 Butte Old railroad grade along the N Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  CHSC83884  Agoseris heterophylla var. cryptopleura Lowell Ahart 2003-4-10 10053 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
Read comments
Jan 19 2011
  CAS-BOT-BC22819  Agoseris heterophylla var. cryptopleura Lowell Ahart; James Jokerst 1985-3-24 4866 Butte W of Lunt Rd, N of Yankee Hill, about 1/2 mi N of the intersection of Lunt Rd and Hwy 70. 550 Comment
  CAS-BOT-BC13174  Agoseris monticola V. Oswald; L. Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kimshew Creek, ca. 1.5 air miles NE of Jones Meadow 1950 Comment
  SEINET10846779  Agrostis avenacea Lowell Ahart 1990-5-25 Ahart 6492 Butte Below the high water line of Lake Oroville, E of the Enterprise Boat Launch Area. About 1/8 mile NW of the Enterprise Bridge across Lake Orovilla. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CAS-BOT-BC127364  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  UC1609262  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  SEINET10507080  Agrostis exarata Lowell Ahart 1983-8-16 Ahart 4290 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
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  SEINET10661070  Agrostis hendersonii Lowell Ahart 2007-5-22 Ahart 13899 Butte T21N, R6E, southeast 1/4 Section 30. On Big Bald Rock, about 14 miles (air) northeast of Oroville. 956 Comment
  SEINET10510277  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2710 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek. 1016 Comment
  JEPS98494  Agrostis pallens Lowell Ahart 2000-6-29 8538 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  CHSC42402  Agrostis scabra Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA129697  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  RSA701233  Agrostis variabilis L. Ahart 2004-8-9 11358 Butte on the very upper reaches of Jackson Creek, on the northeast side of English Mountain, about 2 3/4 miles east of the east end of Bowman Lake. 2264 Comment
  CAS-BOT-BC48025  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Foothills, east of Oroville Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC25042  Aira caryophyllea Rich Leverton 1974-3-3 Butte 5 mi n of Chico on Cohasset Hwy. 200 yards s of road on Jesse Ranch. 76 Comment
  CHSC79996  Albizia julibrissin L. P. Janeway; B. Castro 2000-5-29 6746 Butte Sacramento Valley. South side of city of Chico; along W. 19th Street between Park Avenue and Broadway. 60 Comment
  CHSC36907  Allium amplectens R. A. Schlising 1980-7-25 3920 Butte N part of county near Lomo, 1.9 m ne of jct Hwy. 32 with Humboldt Road. Carpenter Ridge. Comment
  CAS-BOT-BC460375  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1898 Butte Fields near Chico Comment
  CAS-BOT-BC466718  Allium cratericola James Jokerst 1985-3-24 2177 Butte Near Lint Road 471 Comment
  CAS-BOT-BC466715  Allium cratericola Gladys L. Smith 1975-4-8 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  CAS-BOT-BC135821  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along both sides of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  CHSC47048  Allium jepsonii R. A. Schlising; P. Broyles 1988-7-9 4582 Butte E of Paradise and Magalia, N of Oroville and Jarbo Gap. 929 Comment
  CHSC62603  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca. 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS Rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  JEPS108586  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop 927 Comment
  CHSC77451  Allium peninsulare var. peninsulare Tim Stofer 1997-4-9 5 Butte Located on the east side of trail 100 yds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC132070  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. SE. of Oroville on road to Wyandotte 121 Comment
  CHSC104829  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC42837  Alopecurus aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA0115343  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Lunch [Launch?] Area about 10 1/2 miles (air) northeast of Oroville. 217 Comment
  JEPS127068  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UCD97151  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  CHSC36553  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Graylodge Wildlife Refuge Area, ca. 12 mi sw of Gridley. Near a small building in the parking area at the checking station. 35 Comment
  CHSC47964  Amaranthus deflexus Vernon Oswald 1983-10-10 1062 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. The Indian Fishery at the jct. Of W. Sacramento Ave and River Rd. Comment
  CHSC66656  Amaranthus retroflexus Vernon Oswald 1996-7-17 8066 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Along the farm road at Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  CHSC85442  Amaranthus retroflexus R. D. Fischer 2003-10-25 13 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 Comment
  CHSC76410  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte West side of a large pond, large disturbed area along the east side of the Sacramento River, nnorthwest 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
  CHSC50790  Ambrosia artemisiifolia Vernon H. Oswald; Lowell Ahart 1990-7-31 4425 Butte Camelot Estates Subdivision on the north side of Concow Reservoir. 621 Comment
  SEINET10904994  Ambrosia psilostachya Mary Susan Taylor 1975-10-29 Taylor 977 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
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC60585  Amelanchier utahensis Vernon H. Oswald; Lowell Ahart 1993-4-19 5285 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Between creek and the lookout. 774 Comment
  UC1609150  Amelanchier utahensis Vernon H. Oswald and Lowell Ahart 1993-4-19 5285 Butte ene of Magalia (Rattlesnake Creek Trail, serpentine outcrop between Jordan Hill Rd and Sawmill Peak Lookout, between the creek and lookout) 774 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1563265  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
Read comments
1
  CDA36697  Ammannia robusta L. Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  UC1191591  Ammannia robusta Herbert L. Mason and Verne Grant 1945-7-10 12633 Butte n. of Marysville Butte (along Butte Creek, Grey Lodge Game Refuge - southern); Grey Lodge Game Refuge, Butte Creek Comment
  JEPS98972  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and 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
  JEPS119611  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. Comment
  UC1609217  Amsinckia eastwoodiae David Young 1983-3-20 5 Butte 4 km e of Chico (23 m w of Humbolt Rd, .8 km n of Little Chico Creek, ne corner of nw corner of Sect. 29) 99 Comment
  JEPS119741  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12326971  Amsinckia intermedia J. S. Adams 1980-1 5 Butte Horseshoe Lake, opposite Golf Course, Upper Bidwell Park, Chico 98 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
  UC726542  Amsinckia lycopsoides A. A. Heller 1942-4-5 16417 Butte 8 mi n Chico (1/2 mi e of junction of Cohasset road with U.S. 99E) Comment
  SEINET10937963  Anaphalis margaritacea Lowell Ahart 1991-8-25 Ahart 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. Yellow Pine Forest. T22N R5E N/C/S2. 1067 Comment
  CAS-BOT-BC137826  Andropogon glomeratus var. pumilus M. S. Taylor 1977-11-12 1532 Butte On north side of Upper Bidwell Park Road, Chico. 213 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
  CHSC11879  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1650 Comment
  CHSC37120  Angelica breweri L. Ahart 1982-9-13 3804 Butte Along edge of a dirt rd a little n of Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  UCD116183  Anoda cristata Ball 1939-12-1 s.n. Butte Banger garden. Comment
  CHSC48127  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte Hillside at the N side of the dam at Lost Creek Reservoir. 1005 Comment
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  CHSC28779  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1979-9-2 335 Butte Humbug Road, 2.0 mi. N. of Centerville Cemetary. 457 Comment
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  JEPS124024  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte 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. Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC44364  Apocynum cannabinum Lowell Ahart 1988-6-29 6115 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2-1/2 miles southwest of Big Bald Rock. 762 Comment
  CHSC52683  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 330 Butte N part of county, ca. 0.9 mi W of Cherry Hill. 1414 Comment
  SEINET10448429  Arabis sparsiflora var. arcuata Lowell Ahart 1983-5-28 Ahart 4017 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  SEINET10873873  Aralia californica Mary Susan Taylor 1977-7-15 Taylor 1421 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CAS-BOT-BC410080  Arceuthobium occidentale A. A. Heller 1913-10-1 11144 Butte Hills near Big Chico Creek, east of Chico Comment
  NY8241  Arctostaphylos A. A. Heller 1928-2-22 14476 Butte About 2 mi below Forest Ranch , lower limit of the Transition Life Zone. In red clay. Comment
  RSA632998  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27476 Butte Cohasset. 630 Comment
  UCD52120  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51096 Butte In Upper Sonoran Zone on volanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET10449246  Arctostaphylos manzanita Lowell Ahart 1985-2-17 Ahart 4839 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  CAS-BOT-BC38866  Arctostaphylos manzanita subsp. wieslanderi M. S. Taylor; E. J. Pierce 1981-1-29 3374 Butte Cohasset Ridge, ca. 1 mi. s o Cohasset. Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC1303074  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte near Forest Ranch Comment
  UC725334  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte on Pentz-Magalia Rd 5 mi below Paradise Comment
  UC725908  Arctostaphylos mewukka A. A. Heller 1942-1-18 16351 Butte two mi below De Sabla Comment
  CAS-BOT-BC38611  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15491 Butte Neal Road at Paradise in the game refuge, above Bowle's Mansion. Comment
  SBBG103606  Arctostaphylos mewukka subsp. truei J. T. Howell 1976-4-2 51569 Butte Paradise 609 Comment
  CAS-BOT-BC45573  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  NY8239  Arctostaphylos patula A. A. Heller 1928-2-27 14477 Butte About 2 mi below Forest Ranch in red clay at the lower limit of the transition life zone. Comment
  UC535024  Arctostaphylos patula H. F. Copeland 1932-6-29 A 7 Butte The Summit Jonesville Comment
  RSA381139  Arctostaphylos truei J. T. Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise. 609 Comment
  UCD51947  Arctostaphylos truei John Thomas Howell 1975-6-15 51099 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SBBG126077  Arctostaphylos viscida subsp. viscida L. Ahart 2012-3-2 17762 Butte ca 200 yards N of Ten Mile House Rd, ca 200 yards W of Hwy 32, ca 9 mi NE of Chico 422 Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  POM206950  Aristida oligantha E. B. Copeland 1903-7-27 3488 Butte Chico. Butte Creek. Comment
  UCD56442  Aristida oligantha R. Tofsrud 1947-7-1 241 Butte 7 miles north of Oroville. Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CAS-BOT-BC400433  Aristolochia californica John Thomas Howell 1961-9-22 36759 Butte North Fork of Feather River, 10 miles from Oroville. (On the old highway!) Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  UC116655  Aristolochia californica Mrs. R. M. Austin Apr 1 1896-May 1 1896 151 Butte Butte Creek Comment
  CHSC45628  Arnica discoidea Vernon H. Oswald 1987-7-16 3129 Butte West Branch of Feather River where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CHSC42852  Arrhenatherum elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC87782  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611255E 4411193N. 487 Comment
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  CHSC101158  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  UC600678  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 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
  UC1549535  Aspidotis californica M. S. Taylor and V. Oswald 1983-1-14 5213 Butte Devils Kitchen Upper Bidwell Park 274 Comment
  CDA13891  Aspidotis densa G. F. Hrusa, T. D. Wilfred 1997-5-8 13748 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC60939  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET11716730  Aspidotis densa M. S. Taylor 1980-1 2373 A Butte ca 100 ft SW of Pulga bridge over Hwy 70, ca 28 mi NE of Oroville 488 Comment
  SEINET10473398  Aster Mary Susan Taylor 1977-11-12 Taylor 1537 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  POM193101  Aster alpigenus E. B. Copeland 1930-7-26 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  JEPS119693  Astragalus pauperculus Lowell Ahart 2012-5-2 17958 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA178644  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along Pacific Hwy 9 miles north of Chico. Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC108316  Athyrium filix-femina var. cyclosorum Lowell Ahart 2011-8-19 17643 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC13903  Athysanus pusillus K. Alexander 1968-3-23 28 Butte On the n side of Keefer Rd. ca. 0.9 mi e of the junction of hwy 199e, Keefer Rd., Lassen R. and Rowles Rd. Comment
  CHSC34533  Athysanus pusillus R. E. Preston 1982-2-18 171 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC4115  Athysanus pusillus R. Carter 1966-3-13 297 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd. in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  SEINET10448433  Athysanus pusillus Mary Susan Taylor 1980-2-23 Taylor 2318 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 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
  CHSC45554  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte Growing along the sides of a deep ditch, near the entrance to the Gray Lodge Waterfowl Management Area, west of Pennington Road, about 12 miles southwest of Gridley. 30 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC4350  Avena fatua M. Hillier 1966-5-29 Butte Parallel to Manzanita Ave. Chico. Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CHSC113304  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte Bottom of a drying deep pond, about 50 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC66215  Azolla filiculoides Mrs. R. M. Austin 1894-6-1 s.n. Butte Cold Springs, Willow Creek Comment
  POM312949  Azolla microphylla Herbert L. Mason, Verne Grant 1946-8-14 13018 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  UC1101613  Azolla microphylla Herbert L. Mason and Verne Grant 1946-8-14 13018 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  JEPS102322  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (E side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  CAS-BOT-BC98182  Baccharis salicifolia John Thomas Howell 1974-9-19 50883 Butte Feather River Highway bridge at West Branch Feather River - Sierra Nevada 304 Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CHSC66361  Bacopa rotundifolia Vernon H. Oswald 1996-6-20 7830 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 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
  CHSC38120  Bellis perennis R. L. Ondricek-Fallscheer 1983-5-10 174 Butte Cultivated lawn area of Butte Hall, California State Univ., Chico campus. 59 Comment
  CHSC60575  Berberis aquifolium var. dictyota Vernon H. Oswald; Lowell Ahart 1993-4-19 5286 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 859 Comment
  CHSC112542  Bergia texana B. Castro 2012-9-28 1985 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  CHSC75964  Bergia texana Lowell Ahart; Vernon H. Oswald 1999-8-13 8177 Butte East side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles 9air) southwest of Chico. 32 Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC40911  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA726433  Bidens frondosa L. Ahart 2007-11-3 14570 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  CHSC87211  Blennosperma nanum var. nanum Lowell Ahart 2004-4-1 10706 Butte On the margins of vernal pools, on the north side of Nelson Avenue, about 45 yards west of the intersection of 20th Street and Nelson Avenue, Thermalito. 53 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  SEINET12194591  Boisduvalia densiflora Unknown 1985-1 5058 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi NE of Feather Falls 975 Comment
  SEINET3915039  Bolboschoenus glaucus Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch about 2.5 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  CAS-BOT-BC31372  Bolboschoenus maritimus James D. Jokerst 1982-4-29 1544 a Butte Grey Lodge Waterfoul Management Area adjacent to kirt road that is N of Rutherford Rd. Comment
  RSA0101688  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC48890  Boykinia major Vernon Oswald 1985-7-21 1910 Butte Near the bridge over the W. Branch of the Feather R., ca. 1 air mi ne of Inskeep. 1341 Comment
  UC114848  Boykinia major Mrs. R. M. Austin July 1899 114 Butte Butte Creek Colby; , Colby Comment
  CHSC48894  Boykinia occidentalis Vernon Oswald 1983-6-17 703 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 5 - 10 ft above the summer level of the creek. 91 Comment
  CHSC104858  Brachypodium distachyon Lowell Ahart 2010-6-20 16814 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 Honcutt Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC111973  Brachypodium distachyon Lowell Ahart 2012-6-2 18143 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  SEINET10448436  Brassica geniculata Lowell Ahart 1985-7-24 Ahart 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  SEINET10934471  Briza maxima Lowell Ahart 1970-5-12 Ahart 53 Butte Ca. typical size. On dry soils. Peter Ahart Ranch, Honcut. Foothill Woodland. 46 Comment
  CHSC4415  Briza minor J. Francis 1966-5-18 Butte N of golf course, Bidwell Park, Chico. Comment
  CHSC56623  Briza minor J. Lund 1980-4-19 Butte On a trail leading up to the falls above Richardson Springs, northeast of Chico. 121 Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  UCD77184  Brodiaea coronaria Robert E. Preston 2004-4-21 2216 Butte Ca. 4.3 mi NW of Oroville. 56 Comment
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Jun 17 2014
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  CAS-BOT-BC478966  Brodiaea coronaria subsp. coronaria A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CHSC45016  Brodiaea elegans Diane Mastalir 1988-4-25 19 Butte Bidwell Park Chico, 1.6 mi ne of Wildwood Ave on Upper Park Rd., 0.3 mi nw. 109 Comment
  SEINET10872217  Brodiaea elegans Lowell Ahart 1983-6-6 Ahart 4028 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC90224  Brodiaea elegans subsp. elegans Robert Kissane 1989-5-12 2 Butte East side of Bruce Road, ca. 500 m s of Humboldt Road, Chico. 80 Comment
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Jun 17 2014
  POM169538  Brodiaea elegans subsp. elegans A. A. Heller, H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CHSC75413  Brodiaea minor Jennifer Slater 1997-4-20 27 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC484562  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  SBBG45026  Brodiaea minor L. Constance 1941-5-28 2825 Butte foothills 3 mi SW of Paradise 304 Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC46855  Brodiaea sierrae R. A. Schlising; P. Broyles 1988-7-9 4574 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  UCD78198  Brodiaea sierrae R. E. Preston 2002-6-7 1810 Butte Ca. 0.8 mi s of Jarbo Gap, along Hwy 70. 650 Comment
  CHSC87953  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  CDA42771  Bromus catharticus L. Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  SEINET10868335  Bromus commutatus Lowell Ahart 1988-5-30 Ahart 6031 Butte Hairy Chess, On damp disturbed soil, near a seep, about 1/12 mile N of the brige across the North Fork of the Feather River, along Poe Power House Road, about 2 miles SE of Jarbo Gap. 338 Comment
  SEINET11665618  Bromus commutatus Unknown 1983-1 4143 Butte along Ponderosa Way, ca 0.5 mi S of East Fork of Canyon Creek, ca 13.5 mi NE of Oroville 550 Comment
  CHSC3921  Bromus diandrus H. E. Lindahl 1967-3-20 19 Butte 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. 60 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  JEPS116101  Bromus hordeaceus Lowell Ahart 2009-5-8 15668 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
  CDA31600  Bromus laevipes L. Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  CHSC112782  Bromus laevipes Lowell Ahart 2013-5-27 18716 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  UCD58892  Bromus laevipes P. B. Kennedy 1914-5-1 4753 a Butte Grade to Paradise. Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS118076  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  CHSC28543  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On w side of Hwy 32 on edge of forest., ca. 1/4 mi n of Forest Ranch. 718 Comment
  UC600593  Bromus orcuttianus E. B. Copeland July 1929 Butte Jonesville Comment
  SEINET10868251  Bromus rubens Leverton 1974-4-10 LEVERTON s.n. Butte Abundant along East Avenue, ca. .5 mile E of Mangrove Avenue, Chico. Associates: Bromus inermis, Lolium multiflorum. Comment
  CHSC88168  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. 1912 Comment
  CHSC36535  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CHSC96959  Bulbostylis capillaris Lowell Ahart 2007-6-12 14073 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  SEINET4169758  Calliprora scabra A. A. Heller 1938-4-23 15047 Butte Between the Las Plumas road and Jarboe Pass on the Feather River Highway. Transition Life Zone 610 Comment
  JEPS119795  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC78134  Callitriche trochlearis Lowell Ahart 2000-5-21 8380 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  HSC32613  Callitriche trochlearis R. A. Vanbianchi 1974-4-20 229 Butte Table Mtn. 305 Comment
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CAS-BOT-BC487506  Calochortus albus Orrel Ballantyne 1986-4-11 s.n. Butte Near Cherokee. About 2 mi. South of Oregon School Comment
  CAS-BOT-BC487515  Calochortus albus H. E. Brown 1897-4-15 s.n. Butte Near Clear Creek 53 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  CHSC38873  Calochortus luteus Vernon Oswald 1983-5-15 495 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure (n. boundary 500ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  CHSC47585  Calochortus luteus Lowell Ahart 1977-5-2 1342 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC51939  Calochortus luteus Carl W. Dobson 1980-4-12 10 Butte Ca 15 uds N of dirt rd atop Musty Buck Ridge, 0.5 mi N of Big Chico Cr, 5.0 mi ENE of Chico. 231 Comment
  HSC66208  Calochortus monophyllus Laraine Roothoff 1979-5-20 11 Butte 1.05 km. W of Skyway on Bille Rd. at Bille Park, N side of rd., Paradise 518 Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  JEPS114182  Calochortus tolmiei L. P. Janeway 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  SEINET12050638  Calochortus tolmiei Unknown 1981-1 6 Butte Paradise, ca 0.25 mi E of Pearson & Pentz intersection on W side of Feather River Canyon (W branch) 579 Comment
  POM196062  Caltha howellii H. F. Copeland 1929-6-11 1239 Butte Jonesville. 1524 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC41241  Calycadenia multiglandulosa J. D. Jokerst 1985-5-24 2027 Butte Cherokee area just south of Campbell Flat and east of Table Mt. In my backyard. Comment
  SBBG128716  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CAS-BOT-BC106084  Calycadenia oppositifolia John Thomas Howell 1955-6-15 30509 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC107903  Calycadenia oppositifolia L. P. Janeway 2011-6-29 10409 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  RSA255506  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA32854  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  UC217500  Calycadenia oppositifolia H. M. Hall 1917-5-16 10305 Butte Iron Canon (about opposite Hog Spr.) Big Chico Creek 121 Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  CAS-BOT-BC90930  Calycanthus occidentalis H. L. Mason 1927-5-10 3718 Butte Coal Creek, north side of Table Mountain near Oroville. Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC48299  Calystegia malacophylla Vernon Oswald 1983-8-17 981 Butte Humboldt Summit on Humboldt Road, NE of Jonesville at the junction of Butte, Tehama and Plumas Counties. 1999 Comment
  CHSC52019  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-4-16 2796 Butte SE-facing slope above Cedar Creek along road 3.9 mi from Lomo. 1249 Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  JEPS119581  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  JEPS94294  Campanula prenanthoides Lowell Ahart 1997-8-1 7793 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on w side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  CHSC35999  Cardamine nuttallii var. covilleana R. E. Preston 1982-7-1 322 Butte Margins of meadow; ca. 4 mi e of Jonesville. 1950 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
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CHSC32739  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-4-14 3534 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 914 Comment
  CHSC45074  Carex abrupta Vernon Oswald 1987-6-9 2964 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  CHSC88225  Carex angustata Lowell Ahart 2004-7-23 11310 Butte In a small bog, on the south side of the dirt road, about 200 yards east of the large bog, about 3/8 mile (air) east of Bald Mountain Lookout, about 4 1/4 miles (air) northeast of Stirling City. 1702 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC45045  Carex athrostachya Vernon Oswald 1987-6-23 3021 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  UC600700  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville 1524 Comment
  CAS-BOT-BC19202  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butt City. Comment
  HSC87258  Carex barbarae L. P. Janeway, C. A. Janeway 1986-10-4 1901 Butte Along bank of Butte Creek in Butte Creek Canyon, 1 1/2mi E of Skyway 84 Comment
  CHSC106513  Carex bolanderi Peter F. Zika 2009-6-17 24512 Butte Cascade Range Highlands (CaRH). E side of Concow Road near Clear Creek Ranch, 5 road miles N of Route 70. 620 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  CHSC48544  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge; along Concow Rd 1.0 mi N of Rag Dump. 1295 Comment
  SEINET4289467 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC69651  Carex densa James D. Jokerst 1988-4-21 2999 Butte Parrot (Blakely-Swartz) Ranch S of Chico. Comment
  JEPS116081  Carex densa Lowell Ahart 2009-5-23 15730 Butte 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 236 Comment
  SEINET7556724 Image available Carex densa Unknown 2003-5-8 7780 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  SEINET10650517  Carex feta Lawrence P. Janeway 1988-6-14 Janeway 2765 Butte T24N, R3E. Cohasset quad. NE1/4 of sec. 3. NW side of canyon of W Br Butte Cr, 1.1 mi E of Hwy 32 along road to Ewalt Camp. Seep and ditch along dirt road in mixed conifer forest. With C. bolanderi. 945 Comment
  HSC87072  Carex fracta L. P. Janeway 1987-6-27 2337 Butte Canyon of Little Kimshew Creek, along road 0.9 mi. N of the Concow Rd. 1509 Comment
  CAS-BOT-BC21240  Carex fracta Lowell Ahart 1982-9-29 3837 Butte Banks of Pinkard Creek, about 1.5 miles north of the Lost Creek Res. Dam, about 3.5 miles NW of Strawberry Valley. 1200 Comment
  JEPS104626  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  JEPS105634  Carex gracilior L. P. Janeway, John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge 56 Comment
  JEPS116088  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte 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
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  SEINET7561552 Image available Carex hirtissima M. J. Waterway, M. J. Lechowicz 1984-4-24 3068 c Butte Plumas National Forest, ca 2 mi W of Forbestown along Ponderosa Way, 0.3 mi N of jct with Lower Forbestown Road. Comment
  CHSC41296  Carex jonesii S. C. Morey 1983-7-21 491 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45080  Carex jonesii V. Oswald; L. Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CHSC84752  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC95996  Carex jonesii L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8825 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  RSA725282  Carex jonesii L. 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 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CAS-BOT-BC7780  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte three miles southeast of Butte Meadows. 1554 Comment
  CAS-BOT-BC31120  Carex lemmonii V. Oswald; Lowell Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1066 Comment
  CAS-BOT-BC31124  Carex lemmonii L. P. Janeway 1987-6-26 2320 Butte Kimshew Point quad. SW end of Logue Meadows. 1325 Comment
  CHSC113960  Carex lemmonii Lowell Ahart 2014-7-16 19676 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS105281  Carex lemmonii Dean W. Taylor 1995-8-6 15394 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Sierra Nevada 1706 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC110450  Carex multicaulis L. P. Janeway 2013-5-16 11102 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  SEINET10713511  Carex multicaulis Lawrence P. Janeway 1988-5-19 Janeway 2672 Butte T25N, R2E, Cohasset quad. SE1/4 of sec. 36. Along Cohasset Rd near the county line. Partially shaded area on the ridge top; ponderosa pine dominated mixed conifer forest with incense cedar, black oak. 1134 Comment
  SEINET7568477 Image available Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 2 1/2 miles north-east of Forbestown. 853 Comment
  CHSC45061  Carex multicostata Vernon Oswald 1988-6-30 3548 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  CHSC45058  Carex nervina Vernon Oswald 1987-6-9 2963 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  SEINET8469644 Image available Carex nervina L. Janeway, Gog, L 2008-1 3195 (A & B) Butte Just E of Philbrook Reservoir Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  UCD140764  Carex praegracilis J. W. Jones 1922-7-1 s.n. Butte Biggs Rice Station. Comment
  CAS-BOT-BC117984  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro 1988-7-23 3088 Butte Jonesville quad. Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC45070  Carex simulata Vernon Oswald 1983-6-22 739 Butte South of road leading into Soda Springs Campground from Hwy 32, ca. 4 mi nne of Lomo. 1112 Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  SEINET4292179 Image available Carex subfusca Unknown 2003-1 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. Comment
  SEINET7486528 Image available Carex subfusca Peter F. Zika 2009-6-17 24515 Butte below Concow Road 10 road miles above (N of) Route 70 1100 Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  CAS-BOT-BC115684  Carex texensis L. P. Janeway 1989-6-1 3270 Butte Campus of CA State Univ, Chico. Semi-natural area on N side of Big Chico Cr, 57 Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CHSC94299  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC203660  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows 1219 Comment
  SEINET10751319  Carex vesicaria var. vesicaria Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3039 Butte T26N, R5E, Jonesville quad (15'). SE1/4 of sec. 20. Vernal pool next to Humbug Rd 0.8 mi W of Butte Creek House. Large rocky pool surrounded by lodgepole pines and montane chaparral. This is the main species filing the drying vernal pool. 1806 Comment
  JEPS88574  Carex vulpinoidea Vernon H. Oswald and Lowell Ahart 1996-6-10 7754 Butte US Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (canal at ne corner of Tract 7.2, Sanctuary I); Sacramento National Wildlife Refuge, Llano Seco Unit 33 Comment
  RSA739649  Carex whitneyi L. P. Janeway, Linus Gog 2008-7-19 9443 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CDA13868  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  CAS-BOT-BC249113  Castilleja affinis Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC78101  Castilleja affinis subsp. affinis Caleb E. Casey 1999-4-9 Butte South rim trail. Upper Bidwell Park one half mile before Bear hole. 106 Comment
  JEPS3015  Castilleja affinis subsp. affinis Barbara Gail Paulson 1952-4-11 3 Butte near Cherokee 365 Comment
  SEINET10549332  Castilleja applegatei Heidi H. Schmidt 1993-6-15 Schmidt 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found on slope above creek, west side, downstream of pond. 1371 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  JEPS117215  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  UC673463  Castilleja attenuata H. L. Mason 1927-5-10 3715 Butte ne of Oroville (Cherokee Mine) Comment
  CHSC9268  Castilleja exserta D. C. Burns 1971-4-4 120 Butte Ca. 20 yds. e of highway 70, ca. 7 mi n of Oroville. 82 Comment
  SD2949  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  UC600529  Ceanothus cordulatus H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CHSC1501  Ceanothus cuneatus L. Stone 1930-3-9 Butte Near Richardson Springs. 152 Comment
  SEINET10870344  Ceanothus cuneatus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4865 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC111155  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trail, about 50 yards southwest of Tem Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  CHSC50338  Ceanothus diversifolius Vernon Oswald 1990-5-14 4211 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC32834  Ceanothus integerrimus W. Michael Foster 1981-4-24 9 Butte Along both sides of Hwy 70, ca. 2 mi nw of Jarbo Gap and ca. 20 n of Oroville. 609 Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  RSA399894  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CHSC30735  Ceanothus integerrimus var. californicus M. S. Taylor 1980-5-27 2717 Butte S side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  RSA0028424  Ceanothus lemmonii Jon E. Keeley 1996-6-20 27474 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA753078  Ceanothus prostratus Dylan O. Burge 2007-5-11 DOB- 921 b Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) N of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 degrees (True) NNW of Magalia. 850 Comment
  CDA42420  Ceanothus prostratus subsp. prostratus D. G. Kelch 2012-9-19 12 .368 Butte Forest Ranch. Garland Rd. 150 m E of Hwy 32 near forestry camp. Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  JEPS120143  Cedrus deodara Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18023 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 miles west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CDA19037  Centaurea diffusa R. Keck, Riley 2000-7-25 PDR 1170758 Butte 1.2 W of Butte Meadows CDF Fire Station. 0 Comment
  UC196282  Centaurea melitensis A. A. Heller 1914-7-13 1753 Butte 10 mi e of Oroville (Mt. Ida ranch) Comment
  CHSC3231  Centaurea solstitialis Virginia Hagaman 1966-4-30 155 Butte Field 8.4 miles north of Chico on highway 32. Comment
  JEPS13269  Centaurium muehlenbergii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5302 Butte about 2 mi above Hooker Oak (along dirt road leading up Big Chico Creek Canyon) 106 Comment
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville Comment
  JEPS98330  Centaurium muehlenbergii Lowell Ahart 2000-6-21 8496 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CHSC102166  Centaurium tenuiflorum Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC111142  Centaurium tenuiflorum Lowell Ahart 2012-6-21 18212 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC288527  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  CHSC25317  Centromadia pungens M. Hayes; Warner, Schlising 1977-8-23 51 Butte Drainage of Butte Creek where this intersects Highway 162. Near Butte-Glenn county line. 55 Comment
  CDA30204  Cephalanthus occidentalis var. californicus L. Ahart 2009-7-9 16019 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  RSA0118721  Cerastium glomeratum Lowell A. Ahart 2014-4-15 19355 Butte About 400 yards west of the old road, about 3.5 miles (air) northeast of Oroville Dam. 236 Comment
  CAS-BOT-BC388260  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  POM101604  Cerastium glomeratum C. C. Bruce 1897-05 1843 Butte [Unspecified] Comment
  JEPS122198  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  RSA719533  Cercis occidentalis Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12880 Butte East of Chico along Rt. 32. Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  CHSC1543  Cercocarpus betuloides var. betuloides E. Carlson 1937-4-12 Butte Site of Ten-mile House, Humbolt Road. 426 Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 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
  JEPS98427  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 2000-5-31 8413 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC34226  Chamaebatia foliolosa M. S. Taylor 1981-5-7 3630 Butte N side of Ponderosa Way, 0.5 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC110407  Chamaesyce maculata Lowell Ahart 2012-9-28 18473 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  JEPS121304  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC38441  Chamaesyce ocellata Vernon Oswald 1983-7-22 900 Butte Upper Bidwell Park, Chico, on the edge of Upper Park Rd. near the w entrance to Parking Area K (Bare Hole). 128 Comment
  UC869161  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville (in hills) Comment
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS114994  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-11-3 14564 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  UC398930  Chamaesyce serpyllifolia E. B. Copeland 1929-7-29 380 Butte above Jonesville 1750 Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET10899933  Cheilanthes californica Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5213 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  JEPS98298  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UCD97743  Chenopodium album Lowell Ahart 1981-11-6 3223 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC1191352  Chenopodium ambrosioides Herbert L. Mason and Verne Grant 1946-8-14 13026 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  SEINET10904479  Chenopodium ambrosioides Mary Susan Taylor 1979-10-13 Taylor 2248 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CHSC34047  Chenopodium murale L. Ahart 1981-7-26 3002 Butte On sides of large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC55057  Chenopodium vulvaria Lowell Ahart 1991-8-17 6703 Butte In the native plant garden at the Durham Elementary School Durham. 54 Comment
  CAS-BOT-BC451373  Chimaphila menziesii E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  POM161685  Chimaphila menziesii E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  UC474265  Chimaphila menziesii E. B. Copeland 1930-7-21 Butte hill above hotel Jonesville Comment
  CAS-BOT-BC451485  Chimaphila umbellata E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CHSC42903  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte In an almond orchard, along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC29095  Chlorogalum angustifolium M. S. Taylor; J. D. Jokerst 1980-5-15 2621 Butte Ca. 3 mi n of Chico, ca. 1/2 mi e of Cohasset Rd. 91 Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  CHSC19948  Chlorogalum pomeridianum var. pomeridianum M. S. Taylor 1975-3-10 406 Butte Above Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 6 mi e of Chico. 243 Comment
  HSC97883  Chondrilla juncea L. Ahart 2003-7-10 10372 Butte N slope of Ponderosa Dam, about 2 mi. (air) NW of Forbestown 297 Comment
  CHSC39075  Chorizanthe membranacea R. A. Schlising; J. D. Jokerst 1980-7-2 3821 a Butte 1.4 miles S of Nimshew junction of Nimshew Road and Centerville Road, along the latter. At roadside and on rock outcrops in the open. Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail. 426 Comment
  JEPS117155  Chorizanthe stellulata Lowell Ahart 2010-4-30 16604 Butte Open area along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CAS-BOT-BC247537  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  CAS-BOT-BC36373  Chrysolepis sempervirens W. R. Dudley 1895-8-11 s.n. Butte near Butte Summit R.R. Station Comment
  SEINET10937984  Chrysopsis breweri Mary Susan Taylor 1979-7-21 Taylor 2165 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  CHSC35077  Cicendia quadrangularis R. A. Schlising 1980-3-24 3527 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC11784  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  CHSC44044  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-19 2232 Butte Along Sly Cr near crossing of road from the Challenge-LaPorte Rd 2.1 mi toward the SE side of Sly Cr Reservoir. 1097 Comment
  RSA4232  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  CHSC46449  Cirsium scariosum V. Oswald; L. Ahart 1989-6-27 3828 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along Butte Creek. 1767 Comment
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC28707  Clarkia arcuata R. A. Schlising 1979-5-8 3389 Butte E of Chico along the Skyway (Hwy to Paradise). Comment
  CHSC39040  Clarkia arcuata R. A. Schlising 1983-6-9 4420 Butte Carpenter Ridge NE of Lomo, along Humboldt Road. 1341 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  CAS-BOT-BC163578  Clarkia biloba subsp. biloba Mrs. H. C. Cantelow 1940-5-10 4033 Butte 7 mi. E. of Oroville. Old rd. to Bucks Lake Comment
  CHSC4608  Clarkia biloba subsp. brandegeeae R. Carter 1966-6-12 424 Butte Found ca. 7 mi. E of Oroville, 200 yds. S of intersection of Olive Hwy. and Oro-Quincy Hwy. on E side of Olive Hwy., on a road bank above road. 304 Comment
  CAS-BOT-BC164135  Clarkia concinna L. P. Janeway 1993-6-16 4390 Butte Upper east-facing slopes of North Fork Feather River Canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap 670 Comment
  CHSC1096  Clarkia concinna subsp. concinna R. Carter 1964-6-12 119 Butte About 5 mi. NW of Forbestown on old Forbestown-Feather Falls Rd. 548 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC35137  Clarkia gracilis subsp. albicaulis R. Schlising; R. Banchero 1980-6-24 3779 Butte N of Oroville, 0.7 mile NW of Hwy 70 along Lunt Road (= 0.2 mile from junction with Nelson Bar Road). Comment
  CHSC42365  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte On roadcuts near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  CHSC88629  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 349 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  LA206022  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. R. Roberts 1951-5-19 827 Butte road from Nimshew to Butte Creek Canyon, 1.65 mi. below Nimshew Comment
  CAS-BOT-BC163261  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28 993 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  UCD104794  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-6 4429 Butte Western end of Watson Ridge, about 1.8 miles E-NE of Bald Rock Dome. About 0.7 mile NW of Fall River. 1097 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC70738  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4430 Butte Southwestern end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. Road cutbank on south-trending ridge nose. 1097 Comment
  UC1422865  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mi w Enterprise (along highway) Comment
  CHSC46386  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 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
  UCD80466  Clarkia purpurea subsp. quadrivulnera CNPS SN Foothill Team 2005-5-5 SNFN 0157 c Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  POM37810  Clarkia purpurea subsp. quadrivulnera C. C. Bruce 1898-05 2413 Butte Forest Ranch Comment
  JEPS113191  Clarkia rhomboidea Lowell Ahart 2007-5-29 13923 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  CAS-BOT-BC164797  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing rocky cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill 512 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CAS-BOT-BC32912  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 km E of the Jonesville Hotel, above S bank of Jones Creek 1550 Comment
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  UCD100547  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  CHSC54368  Claytonia parviflora subsp. parviflora M. Bailey 1991-3-6 545 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  CHSC109117  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2012-2-22 17743 Butte On a large rock, about 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  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
  POM98214  Clematis lasiantha C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  SEINET10833593  Clematis ligusticifolia Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC66292  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte East of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  SEINET12268888  Collinsia bicolor Unknown 5 s.n. Butte no further locality Comment
  CHSC1733  Collinsia heterophylla R. M. Staley 1952-7-15 Butte Honey Run. 106 Comment
  UCD123585  Collinsia heterophylla L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET12332664  Collinsia heterophylla L. J. Edson 1988-1 8 Butte vic. Chico Municipal Golf Course, ca 3 mi NE of Chico 91 Comment
  CHSC48981  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-5-14 2398 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humbolt and Humbug Roads. 1780 Comment
  CHSC102172  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  SEINET10496935  Collomia heterophylla Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4694 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10496937  Collomia heterophylla Mary Susan Taylor 1981-4-28 Taylor 3563 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC43740  Comandra umbellata subsp. californica Vernon Oswald 1984-6-22 1160 Butte Upper Bidwell Park, Chico, on Yahi Trail near Chico Creek w of Brown's Hole. 182 Comment
  POM225859  Comandra umbellata subsp. californica J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  RSA80351  Conium maculatum F. W. Peirson 1926-6-20 6761 Butte 5 miles west of Chico Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC1509595  Cordylanthus pilosus subsp. pilosus L. Ahart 1983-8-16 4279 Butte 3 mi sw Butte Meadows (near Humboldt Rd) 1450 Comment
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  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC63246  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  SEINET10453479  Cornus nuttallii Mary Susan Taylor 1981-4-14 Taylor 3531 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
  LA40443  Cornus sericea subsp. sericea E. B. Copeland; 1930-6-25 sn Butte Jonesville 1500.0 Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 Comment
  RSA712760  Cornus sessilis L. P. Janeway, Matt Brown 2005-5-17 8392 Butte Plumas national Forest; along un-named creek 0.5 km west of Cedar Creek, 2.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  SEINET10478568  Corylus cornuta var. californica Mary Susan Taylor 1978-7-21 Taylor 1797 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 60 Comment
  CDA34558  Cotoneaster pannosus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CHSC36291  Crassula aquatica M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4358 Butte Graylidge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC101076  Crassula connata Lowell Ahart; John Dittes 2009-3-20 15514 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
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS103410  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC46362  Crassula saginoides Lowell Ahart 1989-5-23 6271 Butte In Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC90797  Crassula tillaea Lowell Ahart 2005-4-18 11734 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
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  POM29974  Crocidium multicaule C. C. Bruce 1897-01 2074 Butte Foothills Comment
  SEINET3477506  Crucianella angustifolia Unknown 2003-5-26 10214 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.67 miles east of Honcut 60 Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS93989  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte ca. 7 (air) mi. n. Oroville (on bottom of very large vernal pool ca. 0.75 mi. n.w. of the cattle chute on the w. side of Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  RSA725010  Crypsis schoenoides L. Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SEINET10518382  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Wildlife Refuge, ca. 13 mi se of Gridley. Not common and inconspicuous. Comment
  SEINET10518393  Crypsis vaginiflora A. Arthur Heller 1914-7-31 Heller 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC29038  Cryptantha affinis J. D. Jokerst 1979-7-3 276 Butte Edges of Jones Cr, N of the town of Jonesville. 1737 Comment
  CHSC35061  Cryptantha affinis R. A. Schlising 1981-6-16 4086 Butte NW part of county, above Cohasset. 1097 Comment
  JEPS87166  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  SBBG127995  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte S side of a poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  SEINET10870092  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4708 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC29286  Cryptantha intermedia R. A. Schlising 1980-5-4 3579 Butte Along Lunt Road, 1/4 mi n of jct with Hwy 70, north of Hwy 70 crossing Lake Oroville. Comment
  CHSC40753  Cryptantha intermedia Lowell Ahart 1985-5-31 5030 Butte About 5 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Boat Launch Aream about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC67753  Cryptantha intermedia James D. Jokerst; M. S. Taylor 1980-4-19 611 Butte Humbug Rd. 7.4 mi N of Centerville Cemetery. Comment
  CAS-BOT-BC68067  Cryptogramma acrostichoides Lowell Ahart; Vernon Oswald 1987-8-5 3179 Butte Near Humboldt Peak 2151 Comment
  CHSC20108  Cupressus macnabiana M. S. Taylor 1975-5-9 568 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  UCD69257  Cupressus macnabiana D. Sanchez-Mata; D. Sanchez-Mata and P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  SEINET10531465  Cupressus macnabiana A. Arthur Heller 1918-5-5 Heller s.n. 1918 Butte Near Magalia in the yellow pine and Oak belt (Q. Kelloggii) on serpentine, where Cupressus Macabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  SEINET10531478  Cupressus macnabiana Lowell Ahart 1985-6-30 Ahart 5094 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  UC335111  Cupressus nootkatensis Lemmon Butte Bidwell's Comment
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  CHSC27180  Cupressus sempervirens M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  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
  JEPS118062  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS95935  Cycloloma atriplicifolium Lowell Ahart 1999-8-13 8159 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC99547  Cymopterus terebinthinus var. californicus L. P. Janeway 2008-6-15 9415 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC190248  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larking Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC41555  Cynodon dactylon R. L. Ondricek-Fallscheer 1982-5-26 136 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  RSA754876  Cynodon dactylon L. Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  SEINET10497510  Cynoglossum grande Mary Susan Taylor 1980-5-8 Taylor 2617 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
  JEPS127226  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10518396  Cynosurus echinatus K. Henegar 1969-5-15 Henegar 55 Butte Upper Bidwell Park, near Big Chico Creek at Bear Hole. Shaded area, sandy soil. Comment
  CHSC68352  Cyperus bipartitus L. P. Janeway 1987-6-20 2272 Butte Seepy area near Fall River, and near the road to Fall River and Cascade 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 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
  CHSC34135  Cyperus difformis L. Ahart 1981-9-19 3187 Butte Small pond ca. 100 m n of Cresta Powerhouse, a little e of Feather River, along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC109748  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC116017  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 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
  JEPS104086  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  UC1100532  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13050 Butte #833 Irrigation Ditch near caretaker's house Greylodge Game Refuge; Butte Sink, Greylodge Game Refuge Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  SEINET10938647  Cyperus erythrorhizos Mary Susan Taylor Taylor 836 Butte Bidwell Park, Chico. Comment
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC78281  Cyperus niger Lowell Ahart 2000-6-17 8489 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC97312  Cyperus niger Lowell Ahart 2007-8-19 14487 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 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
  UCD141201  Cyperus niger Herbert L. Mason; Verne Grant 1946-9-27 13141 Butte three miles west of Biggs. Comment
  CHSC33631  Cyperus squarrosus R. D. Preston; R. A. Schlising 1981-6-21 29 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  UC1100557  Cyperus squarrosus Malcolm A. Nobs and S. Galen Smith 1949-7-29 1089 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CAS-BOT-BC114082  Cyperus squarrosus Clarence Roy Quick 1963-7-16 63 54 c Butte Section Corner Meadow, E of Pulga. 1463 Comment
  CHSC56609  Cyperus strigosus L. P. Janeway 1988-6-26 2885 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  CHSC68420  Cyperus strigosus L. P. Janeway 1988-6-29 2904 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  UC1594527  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  CAS-BOT-BC201006  Cytisus scoparius Lowell Ahart 1980-5-25 2333 Butte Near Old Forbestown 1000 Comment
  CHSC109588  Dactylis glomerata Lowell Ahart 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. 70 Comment
  UCD60296  Dactylis glomerata L. Y. Leonard 1919-6-16 X 3096 Butte Chico. Comment
  SEINET10968264  Dactylis glomerata Mary Susan Taylor 1978-7-21 Taylor 1815 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC2049  Damasonium californicum R. Morford 1921-4-8 Butte Dodge Lands. 30 Comment
  CHSC110239  Danthonia californica L. P. Janeway 2012-6-2 10832 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC43656  Datisca glomerata Vernon Oswald 1987-5-26 2929 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC101137  Daucus pusillus Lowell Ahart 2009-5-15 15676 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC173264  Delphinium M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico 457 Comment
  SEINET10536231  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3568 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  UCD69668  Delphinium Laura Tanata 1982-4-18 24 Butte East side of road on Highway 70, 4.2 miles south of Grand Avenue exit; valley grassland community dominated by grasses, on a dry, sunny, gravel terrace; common erect herb scattered throughout, 4 1/2 dm tall, flower purple. 35 Comment
  CAS-BOT-BC8569  Delphinium hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1.5 miles W of Oroville Quincy Highway 457 Comment
  LA38372  Delphinium hansenii Lewis; 765 Butte 6.4 mi. E. of Oroville City Limits Comment
  UCD95779  Delphinium hansenii W. R. Powell 1968-5-16 1501 Butte Along Olive Highway, 4 miles east of Oroville. 304 Comment
  RSA755748  Delphinium hansenii subsp. hansenii L. Ahart 2009-5-30 15805 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  CAS-BOT-BC10104  Delphinium hesperium subsp. pallescens C. C., Mrs. Bruce 1897-4-1 1917 Butte unspecified Comment
  CAS-BOT-BC9923  Delphinium nudicaule A. A. Heller 1922-4-23 13619 Butte At the Feather River crossing near Yankee Hill Comment
  UC392243  Delphinium nuttallianum E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC2463  Delphinium patens subsp. patens R. Carter 1964-3-23 58 Butte 5 mi. E of Chico Rd. on Cherokee Rd. Ca. 200 yds. E of rd. along base of cliffs. 60 Comment
  CHSC101129  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 Butte about 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC65507  Delphinium variegatum subsp. variegatum Ron P. Garcia 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CHSC49533  Deschampsia cespitosa subsp. cespitosa Vernon Oswald; Lowell Ahart 1987-7-1 3067 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC10640  Deschampsia danthonioides Lowell Ahart 1970-4-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28858  Deschampsia danthonioides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 461 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC97364  Deschampsia danthonioides Paul Maslin 2005-5-1 62 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608788E 4410151N. 518 Comment
  CAS-BOT-BC201742  Deschampsia elongata Vernon Oswald; Lowell Ahart 1987-7-1 3062 Butte Lily Pond located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville 1813 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC47611  Desmazeria rigida Lowell Ahart 1982-5-3 3406 Butte Along the sides of a wash, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC3301  Dicentra formosa M. L. Hillier 1966-4-23 Butte Side of rd. Approx. 4 miles e. of Stirling City. Comment
  CHSC43679  Dicentra pauciflora Vernon Oswald; Lowell Ahart 1987-5-14 2903 Butte Ca. 2.5 mi e of Jonesville on the road connecting Humboldt and Humbug Roads, 0.2 mi se of Scotts John Creek. 1755 Comment
  CAS-BOT-BC254523  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1961-9-22 36729 Butte Feather River, Oroville 53 Comment
  CAS-BOT-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC483253  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1980-3-22 2049 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CAS-BOT-BC501092  Dichelostemma multiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET232463  Dichelostemma volubile Margaret J. Williams, Wayne Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  CHSC88928  Digitaria sanguinalis Lowell Ahart 2004-8-30 11398 Butte In a peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  CHSC47496  Diplacus douglasii Lowell Ahart 1973-3-14 173 Butte 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
  CAS-BOT-BC151921  Diplacus douglasii A. A. Heller 1921-3-27 13534 Butte On the steep slope above Butte Crek near the bridge on Honey Run Road Comment
  CHSC31403  Diplacus kelloggii Paula J. Minton 1980-4-20 4 Butte E of Chico, ca. 8.1 mi on Hwy 32 and 50 ft n of Santos Way. 487 Comment
  CHSC38703  Diplacus kelloggii Vernon Oswald 1983-3-13 156 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC92587  Diplacus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC44796  Diplacus torreyi R. Banchero 1980-6-26 269 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC62136  Diplacus torreyi L. P. Janeway 1993-6-23 4396 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  POM182759  Disporum hookeri var. hookeri Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CDA34546  Dittrichia graveolens L. Ahart 2007-10-3 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. Comment
  CHSC113969  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  CHSC3290  Dodecatheon clevelandii subsp. patulum M. L. Hillier 1966-2-21 Butte Old Oroville Chico rd. 3/4 miles w. of highway 99E along rd. side. Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  POM253217  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-23 15045 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  CDA6254  Dopatrium junceum L. L. Davis 1944-8-23 Butte Biggs Rice Field Station, Biggs. 0 Comment
  SEINET8039316  Downingia bella B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  POM68175  Downingia bicornuta C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  RSA436094  Downingia bicornuta L. Ahart 1984-5-8 4599 Butte Ca. 2.5 miles N and 1.4 miles E of Honcut, ca. 12 miles S of Oroville. 40 Comment
  CHSC29400  Downingia montana R. A. Schlising 1980-6-16 3711 Butte 0.1 mi s of jct Humboldt Rd and Skyway/ Humbug Rd at Butte Meadows. 1341 Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC401553  Drosera rotundifolia M. S. Taylor 1982-8-16 5004 Butte On n side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City 1798 Comment
  SEINET10448021  Drosera rotundifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4202 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
  CHSC110346  Drymocallis glandulosa var. reflexa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC28884  Dryopteris arguta M. S. Taylor 1980-2-17 2355 Butte On s side of lower Forbestown Rd, ca. 3 mi w of Forbestown. 609 Comment
  JEPS116139  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast 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 northea 381 Comment
  CAS-BOT-BC70856  Dryopteris arguta Lowell Ahart 1975-3-7 s.n. Butte 1/2 mile from the Forbestown Reservoir, Forbestown 365 Comment
  CDA38816  Duchesnea indica L. Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. Comment
  CHSC109098  Duchesnea indica var. indica Lowell Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. 60 Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico Comment
  CHSC43600  Dysphania multifida Vernon Oswald 1983-10-10 1057 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CAS-BOT-BC197096  Echinochloa crus-galli Lowell Ahart 1981-9-18 3178 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC71268  Echinochloa crus-galli Lowell Ahart 1998-7-1 8031 Butte On the margins of a stream, 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 350 Comment
  JEPS120763  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  SEINET231721 Image available Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch ca 2.3 mi N and 0.3 mi E of Honcut ca 12 mi S of Oroville 50 Comment
  SEINET10509321  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD61106  Echinochloa muricata L. E. Hazeltine 1916-7-25 Butte Chico. Comment
  CDA1998  Echinochloa oryzicola J. Harroun 1958-9-16 1232 -58 Butte 0 Comment
  CHSC10707  Echinodorus berteroi Lowell Ahart 1972-6-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119523  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  CHSC115337  Elatine Lowell Ahart 2015-4-24 20067 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS124168  Elatine Lowell Ahart 2015-3-26 19964 Butte About one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  POM312315  Elatine ambigua H. L. Mason, Verne Grant, C. T. Mason 1946-8-15 13052 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  CHSC45130  Eleocharis acicularis Vernon Oswald 1987-8-10 3199 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  SEINET13710444  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8576 Butte 4 Mi. NE of Feather Falls (T20N, R7E, sec 4, NE 1/4) 4000 Ft. 1219 Comment
  SEINET13709912  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8699 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi SW Chico Comment
  CHSC45169  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC61343  Eleocharis bella Lowell Ahart 1993-7-13 7065 Butte Bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC68442  Eleocharis bolanderi L. P. Janeway 1987-6-13 2217 Butte Meadow just northeast of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC109771  Eleocharis macrostachya Lowell Ahart 2012-10-28 18534 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC77999  Eleocharis macrostachya Lowell Ahart 2000-5-13 8339 Butte On the bottom of a small wash, south of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS98563  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  CDA38943  Eleocharis macrostachya T. C. Fuller 1976-7-8 20147 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC84269  Eleocharis quinqueflora Lowell Ahart 2003-5-28 10231 Butte Edges of a large vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS98521  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA33182  Eleocharis quinqueflora L. Ahart 2000-7-7 8555 Butte Just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls Comment
  SEINET13710950  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8555 Butte 5 Air Mi. NE of Feather Falls (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  CAS-BOT-BC112032  Eleocharis suksdorfiana M. S. Taylor 1978-6-24 1668 Butte In Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows. 1371 Comment
  CHSC46598  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-7-21 3879 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS122068  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC203425  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC203428  Elymus glaucus subsp. glaucus John Thomas Howell 1961-9-22 36736 Butte Bank of Feather River, Oroville 53 Comment
  CHSC109618  Elymus glaucus subsp. glaucus Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico 76 Comment
  SEINET10836117  Elymus multisetus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4114 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CDA13730  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Uncommon, here in sandy-gravelly, rock outcrop/opening. Perennial, clumping, few-stemmed. Comment
  SD3258  Epilobium angustifolium E. B. Copeland 1930-7-21 Butte Jonesville 1600 Comment
  CHSC37441  Epilobium brachycarpum R. A. Schlising 1981-9-20 4199 Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In ditch. Comment
  SD3257  Epilobium brevistylum E. B. Copeland 1929-7-25 Butte Jonesville. 1500 Comment
  CHSC111964  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte On the strand of the reservoir, 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. 295 Comment
  CHSC42760  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 289 Comment
  CHSC113127  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  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
  JEPS108964  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  RSA725008  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  JEPS117551  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north 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) north of Oroville. 305 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  CHSC61325  Epilobium glaberrimum Lowell Ahart 1993-7-22 7091 Butte Along Fall River, on the east side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1594693  Epilobium hallianum Lowell Ahart 1992-7-21 6803 Butte on sides of a snow lake on s side of Hollow Coon Hollow (about 2 air mi ne of Philbrook Reservoir) 1737 Comment
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC35152  Epilobium minutum R. A. Schlising 1980-5-23 3598 Butte N of Lake Oroville State Recreation Area, along Pulga Road, 0.6 mi n of its junction with Big Bend Road. Comment
  SEINET10841086  Epilobium minutum Mary Susan Taylor 1981-5-21 Taylor 3773 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  UCD106785  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. 2000 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC109667  Epilobium pallidum Lowell Ahart 2012-6-28 18124 -A Butte Near seeps, about halfway between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  RSA695398  Epilobium pygmaeum L. Ahart 2003-6-23 10313 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC46148  Epilobium torreyi Lowell Ahart 1974-6-5 476 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  RSA4627  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  SBBG17368  Equisetum arvense M. Vincent 1962-4-15 180 Butte 1 mi S of Stirling City on Skyway near small stream Comment
  CHSC21043  Equisetum hyemale subsp. affine M. S. Taylor 1975-10-4 965 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  SEINET10834139  Equisetum hyemale subsp. affine Mary Susan Taylor 1983-3-13 Taylor 5244 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  SEINET10899891  Equisetum hyemale var. affine Mary Susan Taylor 1978-7-19 Taylor 1731 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC57255  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  UC1609407  Equisetum laevigatum Lowell Ahart 1993-6-26 7012 Butte ca. 1/4 mi w Lost Creek Reservoir (near center <of> Section 24, n of dirt rd.) 1036 Comment
  CAS-BOT-BC204457  Eragrostis cilianensis Willis H. Wheeler 1945-10-11 s.n. Butte U.S. Plant Introduction Garden, Chico Comment
  CHSC51033  Eragrostis cilianensis Lowell Ahart 1990-7-15 6556 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC75981  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 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
  SEINET10836138  Eragrostis cilianensis Lowell Ahart 1984-10-5 Ahart 4813 Butte On dry red gravelly soil in the open pasture fields; the area has a high water table; Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland. 50 Comment
  CDA34154  Eragrostis pectinacea L. Ahart 2009-8-13 16278 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  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
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CDA42964  Eragrostis pectinacea var. pectinacea L. Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC38820  Eragrostis pectinacea var. pectinacea Vernon Oswald 1983-6-18 710 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS110298  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD64338  Eragrostis pectinacea var. pectinacea Beecher Crampton 1963-9-9 6886 Butte Honcut. Comment
  CAS-BOT-BC278512  Eragrostis pilosa var. pilosa John Thomas Howell 1959-9-20 34675 Butte Eastern outskirts of Oroville 60 Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  CHSC33240  Ericameria arborescens R. A. Schlising; A. Ratcliff, R. Banchero 1980-9-6 3983 Butte 5 mi SE of Feather Falls, roadside. Comment
  CAS-BOT-BC295773  Erigeron petrophilus var. sierrensis Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  JEPS119900  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  HSC96979  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC38611  Eriogonum luteolum var. luteolum Vernon Oswald 1983-8-2 947 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CHSC39085  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1983-8-12 4444 Butte N part of county, on dirt road to Carr Mine NE of Philbrook Reservoir, 1.2 miles W of Plumas County line. 1981 Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC1562280  Eriogonum roseum Lowell Ahart 1990-8-15 2923 Butte about 1/2 mi nw Enterprise Bridge (below the high water line of Lake Oroville, e of the Enterprise Boat Launch Area); Lake Oroville 274 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
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  JEPS122289  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS94934  Eriogonum umbellatum var. ahartii Vernon Oswald and Lowell Ahart 1997-9-9 8857 Butte 0.7 air mi nw of Sawmill Peak Lookout (ne of Magalia near the gravel pit on Jordan Hill Road, 1.4 mi e of the Whiskey Flat Bridge over the West Fork of Feather River) 719 Comment
  UC1562322  Eriogonum umbellatum var. nevadense Vernon Oswald and Lowell Ahart 1990-7-19 4373 Butte ca. 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca. 0.7 mi w of Plumas County line); Philbrook Creek 1950 Comment
  CAS-BOT-BC262213  Eriogonum ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  UC1609157  Eriophyllum lanatum var. croceum Vernon H. Oswald and Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  HSC38026  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2491 Butte Beside Skyway, 2 mi. W of Paradise Comment
  POM358062  Eriophyllum lanatum var. grandiflorum M. M. Boney 1897-1 s.n. Butte [Unspecified] Comment
  UC614533  Eriophyllum lanatum var. grandiflorum L. Constance, J. L. Morrison 1938-4-30 2176 Butte 5 mi se Oroville; Feather River 152 Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC19933  Erodium brachycarpum M. S. Taylor 1975-2-16 374 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC46083  Erodium brachycarpum Lowell Ahart 1989-3-25 6194 Butte Below the high water line of Lake Oroville, about 1/8 mile north-west of Lake Oroville, about 1/8 mile north-west of West Branch Bridge across Lake Oroville. 271 Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS15844  Eryngium castrense W. L. Jepson 1934-5-4 16616 Butte 2 1/2 mi. n.e. Cana Comment
  UC1122957  Eryngium castrense F. W. Embree 1934-4-24 42 Butte 4 1/2 mi. n. & 1 1/2 mi. e. Biggs (Plot <A or G>); Marysville Quad. Comment
  CHSC20876  Erythranthe bicolor Robert A. Schlising 1963-6-7 2619 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC153857  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico 65 Comment
  CHSC39936  Erythranthe glaucescens M. S. Taylor 1984-4-4 5383 Butte N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC78169  Erythranthe glaucescens Lowell Ahart 2000-5-31 8428 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  CHSC44669  Erythranthe guttata R. Banchero 1980-6-6 202 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  SEINET14046240 Image available Erythranthe guttata Helena Barden 1941-1 Butte Road from Pines General Store, Yankee Hill, to Highway #24 Comment
  SEINET8380924  Erythranthe moniliformis C. E. Wickstrom 1964-8-29 52 Butte Butte Meadows 200 ft. sw of where [the] stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. 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
  SEINET10469666  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3428 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  RSA325090  Erythronium multiscapideum M. S. Taylor 1981-4-8 3518 Butte N side of Concow road, ca. 3/4 mile S of its jct. with Ponderosa Way/Rim road, ca. 6 air miles N of Jarbo Gap on highway 70, ca. 21 air miles N of Oroville. 854 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-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CAS-BOT-BC402648  Eschscholzia caespitosa James Jokerst 1985-3-24 2169 Butte Near Serpentine Point 547 Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  CHSC20114  Eschscholzia lobbii M. S. Taylor 1975-4-26 509 Butte Scattered in meadow on e side of Kunkle Reservoir, ca. 40 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  UC85512  Eschscholzia lobbii Mrs. R. M. Austin Apr. 1899 93 Butte near Chico Comment
  CAS-BOT-BC419509  Eschscholzia lobbii Lowell Ahart 1979-5-12 s.n. Butte Near N. Honcut Creek. Peter Ahart Ranch. Honcut 50 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  UC1586472  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4736 Butte Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.) at Jordan Creek (e. of Oroville-Quincy Hwy., ca. 5.75 mi. (air) n.e. of Brush Creek) 1082 Comment
  SEINET10475035  Eupatorium occidentale Mary Susan Taylor 1980-8-2 Taylor 3216 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10906849  Euphorbia maculata Lowell Ahart 1984-8-19 Ahart 4786 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET10973051  Euphorbia maculata Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5111 Butte About 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. Comment
  RSA572325  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3718 Butte 7 miles southeast of Chico. Comment
  RSA178640  Euphorbia ocellata var. ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico. Comment
  UC1594705  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 1992-7-21 6794 Butte on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir 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
  HSC103919  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte West of Cedar Grove, Lower Bidwell Park, Chico; north side of Big Chico Creek, south of Table 34 69 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  SEINET10474655  Evax acaulis Mary Susan Taylor 1980-5-15 Taylor 2634 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CDA42885  Festuca arundinacea L. Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  CHSC73886  Festuca californica B. Castro 1997-6-13 736 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. Along dirt road edges. 1082 Comment
  JEPS87481  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10507962  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  CHSC33950  Fragaria virginiana M. S. Taylor; L. Ahart 1981-8-15 4190 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC95182  Fragaria virginiana R. D. Fischer 2005-6-5 826 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  JEPS103419  Frangula rubra Lowell Ahart 2002-6-2 9679 Butte Meadow, S of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  RSA75273  Frasera albicaulis var. nitida Marion Ownbey, Gerald B. Ownbey, Findley Ownbey 1946-6-25 2944 Butte Butte Comment
  CHSC6632  Fraxinus M. MacArthur 1968-6-16 355 Butte Ca. 10 ft. from NW edge of Big Chico Creek just N of bridge by Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC223389  Fraxinus dipetala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC52182  Fraxinus dipetala L. P. Janeway 1989-5-19 3266 Butte Serpentine outcrop and open area near upper SE branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC40667  Fremontodendron californicum J. D. Jokerst; L. Ahart 1984-3-20 1950 Butte Edge of Ponderosa Rd. (=Bloomer Rd.) 1.45 miles north of its junction with Highway 162. 3 air miles SW of Berry Creek. Comment
  CHSC49601  Fritillaria affinis Vernon H. Oswald 1990-2-21 4135 Butte Slope below Lower Centerville Canal, ca. 0.5 mi nw of where the canal crosses Humbug (Centerville) Rd. 274 Comment
  CHSC115500  Fritillaria eastwoodiae L. P. Janeway 2015-3-18 11641 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
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CAS-BOT-BC130427  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  POM225409  Fritillaria recurva Anonymous, Flower Show 1929-04 Butte [no additional locality information] Comment
  CHSC82424  Galium aparine Lowell Ahart 2002-5-7 9630 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10500691  Galium bifolium Mary Susan Taylor 1978-7-18 Taylor 1714 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  JEPS18286  Galium bolanderi Rimo Bacigalupi with H. Whisler 1957-7-26 6037 B Butte along Humbug Rd. 2.2 mi sw Nimshew (at eastern canyonside of creek, roadbank); Butte Creek 609 Comment
  SEINET10500720  Galium grayanum Mary Susan Taylor 1978-7-18 Taylor 1704 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  CHSC46405  Galium parisiense Lowell Ahart 1989-5-23 6259 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS3305  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 mi s Cherokee (on road to Oroville) Comment
  SEINET5550943  Galium parisiense H. S. Gentry, S. Koch 1962-1 19783 Butte 7 mi. NE of USDA Field Station, Chico, along road to Centerville. 152 Comment
  UC175553  Galium porrigens A. A. Heller 1913-5-28 10769 a Butte 8 mi n Oroville (ditch along Table Mountain) 182 Comment
  CHSC51912  Galium porrigens var. tenue Sally A. Carter 1988-4-24 Butte South side of Little Chico Cr, ca 8.8 mi ESE of Chico, ca 50 ft W of Honey Run Rd. Comment
  CHSC30896  Galium sparsiflorum subsp. glabrius M. S. Taylor 1980-9-12 3332 Butte W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk W of the hwy on dirt road. 975 Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  RSA4162  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  UC1562385  Galium trifidum var. pacificum Lowell Ahart 1990-7-15 6554 Butte w Enterprise Boat Launch area (below high-water line of lake, about 1/2 mi nw of the Enterprise Bridge across lake, n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  SEINET12331813  Galium trifidum var. pacificum L. Ahart, Ahart, P. 1984-1 4750 Butte about 1.5 mi SE of Bald Mountain, 0.25 mi E of Oak Point, about 5 mi NE of Stirling City 1500 Comment
  SEINET10500787  Galium trifidum var. subbiflorum Mary Susan Taylor 1977-8-17 Taylor 1462 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC11818  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  UC1523189  Galium triflorum M. S. Taylor and L. Ahart 1981-8-15 4194 Butte n side of Coon Hollow Rd 1.2 mi e jct with Humbug Rd (along creek, ca 12 mi ne of Stirling City); Jonesville SW quad 1676 Comment
  UC1948358  Gamochaeta argyrinea John L. Strother with Richard L. Moe 2012-5-17 1373 Butte ca. 8 km southwest of Oroville, east side of Thermalito Afterbay at Larkin Road boatlaunch ramp Comment
  CHSC52399  Garrya fremontii Dena Gracey 1979-3-22 22 Butte Northeast of Chico 10 mi on hwy 32, off Crown Point Rd 5 ft. 548 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
  SBBG29803  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  CAS-BOT-BC282600  Gastridium phleoides Lowell Ahart 1985-6-17 s.n. Butte Near teh dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CHSC47682  Gayophytum heterozygum Lowell Ahart 1989-9-21 6394 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  POM181516A  Gayophytum racemosum H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  UC1128922  Genista monspessulana C. G. Albertus 1933-6-6 15 Butte 1 mi. n.w. Nelson's Bar; Chico Quad. Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  CHSC51883  Gentianopsis simplex L. P. Janeway 1988-7-29 3106 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC50046  Geranium carolinianum Lowell Ahart 1990-4-8 6433 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS122280  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC30298  Geranium molle M. S. Taylor 1980-5-27 2644 Butte Among grasses in parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC41371  Gilia capitata subsp. mediomontana R. A. Schlising 1980-6-17 3731 Butte N of De Sabla, along the Skyway, ca. 1.5 mi SW of junction with Coutelenc Road at Lovelock. 780 Comment
  CHSC31360  Gilia tricolor Stephen M. Turek 1980-4-14 4 Butte Ca. 2 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  POM74092  Gilia tricolor C. C. Bruce 1897-04 1925 Butte [No locality information provided] Comment
  JEPS28831  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1305 Butte about 3 mi e Chico (just of Centerville road, about 1 mi e of its junction with the Paradise road (Skyway)) 67 Comment
  CHSC82427  Githopsis specularioides Lowell Ahart 2002-5-7 9616 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
  POM60080  Githopsis specularioides A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CHSC51368  Glinus lotoides Vernon Oswald; Lowell Ahart 1990-10-11 4460 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. Occasional plants on drying mud on the bed of Dark Canyon Creek, below the high-water line of the lake. 243 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC51873  Glycyrrhiza lepidota L. P. Janeway 1988-6-5 2729 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA715578  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CAS-BOT-BC302473  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CHSC28640  Gnaphalium palustre M. S. Taylor 1978-9-9 1911 A Butte W side of Bull Run Rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  CHSC75960  Gnaphalium palustre Lowell Ahart; Vernon H. Oswald 1999-8-13 8166 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
  UC1609043  Gnaphalium palustre Lowell Ahart 1993-7-23 7103 Butte about 100 yds w bridge across river (about 6 air mi ne of Feather Falls, sand bar on w side of river); Fall River 1036 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  UCD80779  Gratiola ebracteata CNPS SN Foothill Team 2005-3-31 SNFN 0073 g Butte CDFG, North Table Mountain Wildlife Area, in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  SEINET10547783  Gratiola ebracteata Mary Susan Taylor 1978-5-7 Taylor 1599 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD123729  Gratiola ebracteata R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  UCD132497  Grindelia camporum M. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 1/2 mile off Pentz Road. Comment
  SEINET10872144  Grindelia camporum Mary Susan Taylor 1979-10-13 Taylor 2262 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  UC600450  Hackelia nervosa H. F. Copeland 1932-6-27 Butte near Butte Creek House; Jonesville Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  UC177590  Helenium puberulum H. M. Hall 1914-8-1 9827 Butte foothills near Oroville; Sierra Nevada Mountains Comment
  CHSC66433  Heliotropium curassavicum Vernon H. Oswald; Lowell Ahart 1996-6-10 7748 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On edge of the farm road bordering the slough on the E side of Little Grant, near the Riparian Sanctuary. 28 Comment
  CHSC108137  Heliotropium europaeum Lowell Ahart 2011-10-30 17732 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC35087  Heliotropium europaeum R. A. Schlising 1981-11-3 4220 Butte Central part of county, at jct of Messilla Valley Road and Pentz Road. At roadside. 130 Comment
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC61297  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 (air) miles north-east of Stirling City. 1584 Comment
  UC478461  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  SD3460  Heracleum maximum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  CHSC60827  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald; Lowell Ahart 1993-6-22 5556 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. At roadside. 1091 Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 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
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CAS-BOT-BC175997  Hesperolinon californicum Lowell Ahart 1977-5-11 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC1012  Hesperolinon micranthum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  CDA36314  Heteranthera limosa CDFA Staff 1988-1 Butte Biggs; Rice Experimental Station. 0 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  CDA7878  Heterotheca oregona var. rudis L. Ahart 2002-9-27 9940 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  POM92886  Heuchera micrantha C. C. Bruce 1897-05 2041 Butte Butte Creek. Comment
  CHSC38547  Hibiscus lasiocarpos var. occidentalis Vernon Oswald 1983-7-22 899 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at Parking Area L (Diversion Dam). 128 Comment
  POM193093  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  CAS-BOT-BC55334  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  CAS-BOT-BC55330  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CDA2179  Holcus lanatus L. Ahart 2000-7-17 8594 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET10483353  Holodiscus boursieri Lowell Ahart 1985-6-16 Ahart 5044 Butte About 1/4 mile south-west of the Forbestown Resevoir, about 4 miles north-east of Forbestown. Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  POM219098  Holodiscus discolor H. F. Copeland 1928-8-14 398 Butte Top of fire-swept ridge between Jones Creek and Scotch John Creek, Neighborhood of Jonesville. 1829 Comment
  CHSC58951  Holodiscus microphyllus var. glabrescens Lowell Ahart 1992-7-26 6842 Butte Slope, on the west side of a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  SEINET10966308  Hookera coronaria A. Arthur Heller 1913-6-4 Heller 107 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC37368  Hordeum murinum subsp. glaucum R. A. Schlising 1982-5-18 4242 a Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC38824  Hordeum murinum subsp. leporinum Vernon Oswald 1983-3-5 114 Butte Upper Bidwell Park, Chico, at the edge of the turn-around on the road to the Horse Arena. 82 Comment
  CHSC8225  Hordeum murinum subsp. leporinum M. Banning 1969-3-7 9 Butte Across from Chico Jr. Hi. on S. side of Memorial Way, Chico. 60 Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CAS-BOT-BC536584  Horkelia californica var. elata Lowell Ahart 1980-7-29 2505 Butte Sierra Nevada, near Forbestown Road 750 Comment
  JEPS83780  Horkelia fusca subsp. tenella V. Oswald and L. Ahart 1988-7-16 3614 Butte ca 6 air mi se Jonesville; Snow Mt. region, Red Fir Forest 1996 Comment
  SEINET3836429 Image available Hosackia argophylla var. fremontii A. A. Heller 1940-6-5 15699 Butte Feather River, between bridge and mouth of the West Branch of North Fork Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  CHSC26852  Hosackia oblongifolia var. oblongifolia M. S. Taylor; M. Hayes 1978-6-24 1640 Butte On Ernies Island in Butte creek, at tis jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC33906  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-7 3647 Butte S side of Fields Ridge Rd (20N24), 4.7 mi s of its jct with Lumpkin Ridge Road (20n24), 4.7 mi s of its jct with Lumpkin Rd, ca. 2 air mi se of Feather Falls. 1036 Comment
  JEPS120934  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte About 50 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CDA38353  Hydrocotyle umbellata L. Ahart 2000-9-2 8680 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  SFV2584  Hydrocotyle verticillata M. L. Vincent 1960-7-19 113 Butte Sierra Nevada 4 miles south of Paradise at small reservoir off Pentz Road. 450 Comment
  CAS-BOT-BC175966  Hypericum Lowell Ahart 1977-6-26 s.n. Butte Peter Ahart Ranch, Honcut. Along edge of North Honcut Creek 50 Comment
  CAS-BOT-BC400832  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC102846  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC13712  Hypericum anagalloides M. S. Taylor 1974-9-14 321 Butte Abundant ca. 1/2 mi n of Bidwell Park Rd, opposite Alligator Hole, on w edge of burn, Upper Bidwell Park, Chico. Comment
  UCD110323  Hypericum anagalloides L. Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS115302  Hypochaeris glabra Lowell Ahart 2009-5-8 15654 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
  CHSC43957  Hypochaeris radicata Vernon Oswald 1988-6-2 3353 Butte Hwy 32, 10.5 mi (odometer) n of Forest Ranch. 1036 Comment
  CHSC44902  Hypochaeris radicata Lowell Ahart 1988-7-31 6160 Butte Along the east 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
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC46979  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte Richardson Springs in the foothills ne of Chico. North of the falls on the East Branch of Mud Creek. 243 Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CAS-BOT-BC133513  Iris Lowell Ahart 1980-5-29 2360 Butte 2 1/2 mi. north-east of Mountain House, about 50 m. E of the Oroville Quincy Highway 1100 Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  CHSC2207  Iris macrosiphon I. Huffman 1930-5-5 Butte Paradise. 548 Comment
  CHSC2812  Iris macrosiphon David Prall 1965-3-14 Butte At roadside ca. 3 yds. west of Neal Rd. 2 miles east of Highway 99E. 152 Comment
  CHSC3971  Iris macrosiphon J. W. Cherry 1967-3-26 Butte On hillside about 50 yds. n. of Bidwell Park road, 0.9 mi. e. of Salmon Hole. 179 Comment
  CHSC55627  Iris macrosiphon Dan Morgan 1991-4-21 20 Butte Indian Springs Rd., 0.3 mi w of Neal Rd. Paradise 243 Comment
  JEPS120115  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC143451  Iris macrosiphon Mrs. R. M. Austin Mar 1896 13 Butte Little Chico Creek Comment
  SEINET10874665  Isoetes Mary Susan Taylor 1980-3-1 Taylor 2345 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
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  JEPS122226  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 -A Butte About one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 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 4 1/4 miles (air) northeast of Honcut. Comment
  CHSC60643  Isoetes orcuttii Vernon H. Oswald 1993-4-15 5271 Butte Upper Bidwell Park, Chico, in the vernal pool located at the SE corner of the fenced enclosure along the north boundary, somewhat E of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC112446  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Ca. 1/10 mi NE of the old barn, ca. 1/2 mi NE of the Honcut Cemetery, Joie Osgood Ranch 60 Comment
  CHSC45588  Isolepis setacea M. S. Taylor 1981-5-6 3622 Butte W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. 1127 Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC57153  Juncus articulatus L. P. Janeway 1987-6-19 2249 Butte Meadow on Pinkard Creek between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC78326  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte On the sides of a dirt road, about100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) mortheast of Feather Falls. 1219 Comment
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  JEPS113865  Juncus brachyphyllus Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  CHSC103697  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  JEPS114380  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS114389  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  RSA0118937  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 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
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, 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
  CHSC69727  Juncus bufonius var. occidentalis Lowell Ahart 1997-10-24 7935 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, stand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC47540  Juncus capitatus Lowell Ahart 1980-5-4 2207 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC112461  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  RSA368330  Juncus cyperoides L. Ahart, P. Ahart 1984-7-10 4692 Butte About 0.5 mile SW of the jct. of Black Bart Road and Forbestown Road, ca. 14 miles E of Oroville. 650 Comment
  CHSC74143  Juncus dubius B. Castro 1998-7-8 806 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. At end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC94611  Juncus ensifolius Lowell Ahart 2006-9-13 13317 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC96910  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  UC842621  Juncus howellii A. A. Heller 1917-7-28 12837 Butte Butte Meadows 1280 Comment
  CHSC78212  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte In tire ruts on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC103508  Juncus laccatus Peter F. Zika 2009-6-17 24514 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  CAS-BOT-BC110101  Juncus leiospermus var. ahartii Lowell Ahart 1973-4-15 192 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC110135  Juncus leiospermus var. leiospermus Lowell Ahart 1984-5-7 4589 Butte Near Kunkle Res., south of Paradise. 600 Comment
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  CAS-BOT-BC110141  Juncus leiospermus var. leiospermus Lowell Ahart 1984-4-6 4543 Butte About 0.5 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC83946  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 332 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
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  UC600800  Juncus nevadensis H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC43792  Juncus orthophyllus Vernon Oswald; Lowell Ahart 1987-7-1 3086 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. Along the streamlet draining the small lake northward into Butte Creek. 1935 Comment
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 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
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  CHSC96885  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  CDA34630  Juncus tenuis L. Ahart 2009-6-19 15918 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. Comment
  CHSC40352  Juncus tenuis Lowell Ahart 1985-7-24 5154 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles northeast of Forbestown. 350 Comment
  CHSC71202  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte Northwest of the lone tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS113856  Juncus tenuis Lowell Ahart 2007-7-7 14262 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 53 Comment
  JEPS94063  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte ca. 7 mi. (air) n. Oroville (n.w. of the lone tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  UC1562478  Juncus tenuis Vernon Oswald and Lowell Ahart 1990-5-26 4257 Butte s of Oroville (Pacific Heights Rd entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  UCD169268  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte On the north side of the South Fork of the Feather River. About 50 yards east of where Sucker Creek enters the South Fork of Feather River. About 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  SEINET10472342  Juncus tenuis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4734 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC96542  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 Comment
  CHSC99820  Juncus trilocularis Lowell Ahart 2008-6-13 14821 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  CHSC47575  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS113765  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of 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
  RSA726656  Juncus usitatus L. Ahart 2007-7-5 14249 Butte 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air southwest of Gridley. 25 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CAS-BOT-BC80922  Juniperus californica Don Heinz 1967-2-12 s.n. Butte Butte Co. dump, Neal Rd., ca. 7 mi. SE of Chico 106 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CAS-BOT-BC235677  Keckiella breviflora var. glabrisepala A. A. Heller; H. E. Brown 1902-5-6 5471 Butte Berry Canyon (Near Clear Creek) Comment
  HSC97347  Kickxia elatine J. P. Smith, J. O. Sawyer 2007-9-2 12420 Butte Parking lot at observation platform at the Llano Seco Unit of the Upper Butte Basin Wildlife Area along Seven Mile Rd. Comment
  CHSC45267  Kochia scoparia Vernon Oswald 1988-9-21 3702 Butte Ranch Arroyo Chico. Pine Creek Landing, Bidwell River Park, w of Chico. 41 Comment
  CHSC4140  Kumlienia hystricula R. Carter 1966-4-28 379 Butte Found in Feather R. Canyon 11 mi. NW of Butte-Plumas Co. line along N side of Hwy 70. On cliff above road just S of water fountain. 701 Comment
  JEPS110180  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC340532  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  CHSC6020  Lagerstroemia indica M. MacArthur 1968-6-19 265 Butte SE side of Auditorium bld., Chico. 60 Comment
  CHSC28809  Lagophylla glandulosa J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 409 Butte Top of Table Mt, 100 m north of Cherokee Rd at the east edge of the top. 396 Comment
  CHSC38368  Lagophylla glandulosa Vernon Oswald 1983-7-15 870 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1600 ft e of the parking lot at Salmon Hole. 182 Comment
  CHSC30546  Lamarckia aurea J. D. Jokerst 1980-3-23 93 Butte Along sides of Hwy 70 at its jct with the West Branch of Feather River. Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. Comment
  POM361506  Lasthenia californica A. A. Heller 1914-4-3 11260 Butte 8 miles from Oroville. Comment
  UCSB63629  Lasthenia chrysostoma Richard Ernenwein 1995-10-23 135 Butte collected 2.3 mi E, along the S-side of Humboldt Road, E of Chico U S Highway 99 - Humboldt Road, , and Chico Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 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
  SEINET11804897  Lasthenia chrysostoma M. J. Luesebrink 1978-1 2 Butte ca 300 ft N of Skyway Rd, 3.8 mi E of jct with Humbug Rd, 4.6 mi E of jct with Hwy 99, ESE of Chico 274 Comment
  UC472213  Lasthenia fremontii Francis Ramaley 1917-5-6 11216 Butte near Chico Comment
  UCSC004636  Lasthenia gracilis Lowell Ahart 2005-5-11 11791 Butte T20N, R4E, northwest 1/4 Section 20, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off Cherokee Road, about 200 yeards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville Comment
  UCR227351  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  SEINET955243  Lathyrus californicus Carl B. Wolf 1937-1 8786 Butte Sacramento Valley. 1 mi. no. of Durham 46 Comment
  CAS-BOT-BC213338  Lathyrus jepsonii subsp. californicus H. E. Brown 1897-4-15 213 Butte Near Clear Creek Comment
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  UC204733  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte w of Chico (bank of Sacramento River); Sacramento River Comment
  POM219421  Lathyrus nevadensis subsp. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  SEINET10940005  Lathyrus sulphureus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4227 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
  CHSC31092  Layia fremontii Stephen M. Turek 1980-4-14 1 Butte Ca. 5 yds s of Humboldt Road, 1.7 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  UCD63609  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs. Comment
  JEPS98546  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC105261  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
  CHSC106885  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC50651  Leontodon saxatilis subsp. longirostris Lowell Ahart 1990-5-25 6494 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Area, about 1 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS119878  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-6-2 18131 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  RSA300953  Lepechinia calycina D. C. Michener 1982-7-28 4139 Butte CA 32 ca 9.3 miles northeast of jc with CA 99 near Chico. Comment
  SD174006  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte Forest Ranch (5.6 miles southwest of). 548 Comment
  CHSC35764  Lepidium appelianum R. A. Schlising; J. D. Jokerst 1982-6-4 4287 Butte N of Oroville and n of Jarbo Gap along Hwy 70 above Feather River Canyon. Roadside. 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
  UCR237305  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18756 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CHSC48336  Lepidium perfoliatum Vernon Oswald 1985-5-8 1748 Butte In Parking Lot #15 w of the Headquarters at Graylodge Waterfowl Management Area. Comment
  JEPS98681  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte NE of Oroville Post Office (S side of the Ehmann Home) 36 Comment
  UC1586517  Leptochloa fascicularis Lowell Ahart 1991-9-14 6721 Butte about 2 mi e Honcutt (margins of a large reservoir); Joie Osgood Ranch 45 Comment
  CAS-BOT-BC273950  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  CHSC78260  Leptosiphon filipes Lowell Ahart 2000-6-27 8526 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC91672  Leptosiphon filipes L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Steep southwest-facing slope. 981 Comment
  CHSC93863  Leptosiphon filipes Lowell Ahart 2006-6-9 12660 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 354 Comment
  CHSC29819  Leptosiphon parviflorus M. S. Taylor 1980-4-16 2490 Butte Lake Oroville State Recreation Area, ca. 1/2 mi se of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC27731  Lessingia nemaclada Robert A. Schlising 1978-10-10 3343 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest Area. Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  UC1069830  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mi w Tres Vias; Chico Quadrangle Comment
  UC368031  Lessingia virgata John B. Leiberg 1900-9-28 5375 Butte 10 mi e Oroville; Buffalo Ranch 609 Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  CAS-BOT-BC444475  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-22 3050 Butte Upper Coon Hollow; just below saddle between Coon Hollow and Chips Creek. 1920 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  JEPS117423  Ligustrum obtusifolium 2010-8-6 17045 Butte Near the north edge of Big Chico Creek, south of Picnic Area 40, Lower Bidwell Park, Chico 70 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
  CDA34704  Lilaea scilloides L. Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CHSC44652  Lilium pardalinum subsp. pardalinum L. P. Janeway 1988-7-2 2962 Butte Near the rd to French Cr, 0.9 mi S of Coyote Gap. 1188 Comment
  CHSC27675  Limnanthes alba Robert A. Schlising 1978-4-23 3223 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. On ridgetop. Comment
  UCD85026  Limnanthes alba subsp. versicolor Dena Grossenbacher; Joel Smith 2009-5-9 985 Butte 1/8 mile south of Lumpkin Ridge Road 1.5 miles east of Camp 18. National Forest. 1289 Comment
  CHSC23531  Limnanthes douglasii subsp. rosea M. S. Taylor 1976-3-23 1030 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99 junc, ca. 11 mi n of Chico. 60 Comment
  JEPS18178  Limnanthes douglasii subsp. rosea Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5611 Butte near junction of road to Oregon City (along Oroville-Concow road) 388 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  CHSC84871  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 46 Butte Dove Ridge Preserve, north of Gold Run Creek. Comment
  RSA754581  Linanthus filipes L. Ahart 2009-4-22 15586 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET7072745  Linanthus filipes A. G. Vestal 1963-5-9 s.n. Butte About 3.5 miles north of Oroville. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 623209mE, 4374845mN. Coordinate datum: NAD 27.) Comment
  UC947528  Linanthus parviflorus A. G. Vestal 1947-4-30 Butte road to Cherokee Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC66679  Lindernia dubia var. anagallidea Vernon H. Oswald; Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge. Llano Seco Unit. 30 Comment
  CDA42840  Linum bienne L. Ahart 2011-6-5 17365 Butte On the west edge 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
  CHSC107370  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge 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
  CHSC55620  Lipocarpha L. P. Janeway 1987-6-5 2142 Butte Border area of small pool, near confluence of Ram Creek and French Creek. 609 Comment
  CHSC45134  Lipocarpha aristulata Vernon Oswald 1987-8-13 3216 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  UC600634  Listera convallarioides W. F. Wright 1926-7-12 324 Butte near Butte Creek Comment
  SEINET10482996  Lithophragma Mary Susan Taylor 1981-4-5 Taylor 3496 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC32134  Lithophragma bolanderi L. Ahart 1974-4-11 390 Butte Peter Ahart Ranch. 45 Comment
  CHSC87452  Lithophragma bolanderi R. D. Fischer 2004-3-20 86 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found in north running ravine on the Guardian Trail located below the bluffs of the Disk Golf Course. 396 Comment
  CAS-BOT-BC123099  Lithophragma bolanderi Joseph William Blankinship 1893-1-1 s.n. Butte Marysville Comment
  SEINET10483074  Lithophragma bolanderi Mary Susan Taylor 1980-4-16 Taylor 2496 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
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  JEPS107335  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  UCD66624  Lolium temulentum R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 4 mi. N of Gridley. Comment
  CDA38385  Lomatium dasycarpum subsp. tomentosum L. Heinricks 1960-4-25 s.n. Butte Northwest corner of Chico & Cottonwood Roads. 0 Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  CHSC13852  Lomatium utriculatum J. A. Guichard 1973-4-4 14 Butte Area above Chico Creek between Salmon Hole and Devils Kitchen. 182 Comment
  CHSC25359  Lomatium utriculatum Marc P. Hayes 1977-4-22 7 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 80 m from juncture with Hwy 70. 495 Comment
  CHSC29759  Lomatium utriculatum J. D. Jokerst 1980-4-21 631 Butte Top of North Table Mt., ca. 1.0 mi N of Cherokee Rd., at water falls of North branch of Coal Cr. 381 Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CAS-BOT-BC240444  Lonicera hispidula Lowell Ahart 1985-6-30 5082 Butte East of the road to the Forbestown Res. Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC240689  Lonicera interrupta Lewis S. Rose 1945-5-12 45034 Butte Richardson Springs 304 Comment
  POM260437  Lotus argophyllus var. fremontii L. S. Rose 1940-5-30 40424 Butte Feather River Canyon, 25 mi. ne of Oroville. 610 Comment
  UC204539  Lotus denticulatus A. A. Heller 1914-5-1 11342 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  UC1129064  Lotus humistratus C. G. Albertus 1933-6-1 11 Butte 6 mi sw Paradise; Chico Quad. 152 Comment
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  SEINET10874113  Lotus subpinnatus Mary Susan Taylor 1978-5-7 Taylor 1616 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  RSA0118783  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  JEPS119895  Ludwigia palustris Lowell Ahart 2012-6-5 18168 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  RSA21661  Lupinus albicaulis var. shastensis Carl B. Wolf 1937-5-18 8731 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CAS-BOT-BC201356  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 2.0 miles southwest - Chico Rd. Comment
  CHSC3985  Lupinus albifrons var. collinus D. B. Joley 1967-3-16 16 Butte Few plants on a slope of a hill, ca. 10 feet n of Nelson Bar Rd. and 1/2 mile from turn off on to Nelson Bar Rd., Pentz. 106 Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  CHSC65102  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27). 1859 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  POM23581  Lupinus densiflorus var. densiflorus C. C. Bruce 1897-05 2033 Butte Butte Creek. Comment
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  CDA13329  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13175 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC97022  Lupinus grayi L. P. Janeway 2007-7-23 9122 Butte Northern High Sierra Nevada. Plumas National Forest; south-facing road cutbank along Road 21N92, on eastern Watson Ridge 1.8 km north-northwest of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1201 Comment
  POM27145  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2437 Butte Doe mill Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC78077  Lupinus microcarpus var. densiflorus Caleb E. Casey 1999-5-13 Butte Bear Hole, Upper Bidwell Park. Found on South side of Chico creek. 121 Comment
  UC204550  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  CHSC113397  Lupinus polyphyllus var. burkei Lowell Ahart 2014-7-2 19536 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC25291  Lupinus polyphyllus var. burkei M. S. Taylor 1977-7-15 1418 Butte On Humbug Rd between Covered Bridge and Paradise, ca. 3 mi s of Paradise. Comment
  UC726320  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte near De Sabla; near De Sabla Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  CHSC31951  Luzula cascadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-7-16 848 Butte Chico Meadows, Scout Rd 1.1 miles N of its jct with the Skyway and Humboldt Rd. 1341 Comment
  CHSC55303  Luzula parviflora Lowell Ahart 1991-8-25 6707 Butte Along Haphazard Creek, about 1 mile northwest of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles northeast of Brush Creek. 1219 Comment
  CHSC84881  Lychnis coronaria Lowell Ahart 1983-7-29 4229 Butte Found along the edge of the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UC196311  Lycopus americanus A. A. Heller 1914-8-20 11686 Butte 14 mi. from on Oroville-Chico road Chico Comment
  UCD124961  Lycopus asper E. M. Johnston 1915-1 W 136 J Butte Biggs. Comment
  CHSC46308  Lythrum californicum Vernon Oswald 1989-5-23 3780 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  SEINET13711409  Lythrum hyssopifolia Lowell William Ahart, Lowell William Ahart 1999-1 8169 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC65401  Lythrum portula Vernon Oswald 1983-7-21 892 Butte Upper Bidwell Park, Chico, along the edge of Horeshoe Lake. 100 Comment
  SEINET3450927  Lythrum portula Unknown 2003-6-23 10301 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  SEINET10452849  Lythrum salicaria Lowell Ahart 1984-8-19 Ahart 4782 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. 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
  CAS-BOT-BC342721  Madia elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC101120  Madia elegans subsp. vernalis 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
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  RSA718336  Madia exigua L. Ahart 2006-6-9 12650 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  CAS-BOT-BC342957  Madia gracilis Clarence R. Quick 1952-6-30 52 -105 Butte Ridge top, Big Bar Mt., east of Pulga Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC40301  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC46956  Madia gracilis Lowell Ahart 1978-6-2 1750 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC345235  Madia subspicata Lowell Ahart 1980-5-17 2306 Butte 1/2 mile south-east of Hurleton 600 Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  CHSC104820  Madia subspicata Lowell Ahart 2010-6-1 16751 Butte On the south side of the Guardians Trail, about 100 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CAS-BOT-BC345238  Madia subspicata Bruce G. Baldwin; Gerald D. Carr; Lowell Ahart 1988-6-9 713 Butte Peter Ahart Ranch, 1 mile north, 3 miles east of Honcut Comment
  CAS-BOT-BC512736  Maianthemum stellatum H. F. Copeland 1929-6-12 1255 Butte Jonesville, in woods on banks of Jones Creek 1524 Comment
  CHSC40483  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  CHSC109075  Malva nicaeensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC52032  Marrubium vulgare B. Castro 1988-4-21 259 Butte At edge of Chico Cyn Rd just past hairpin turn where road turns away from Big Chico Ck and passes pistachio orchard at base of ridge. Naturalized fairly frequently along this strip on both sides of Big Chico Ck. on the e side of Chico. 91 Comment
  CDA42740  Marsilea T. C. Fuller 1958-4-15 4798 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC7074  Marsilea vestita Bryan C. Willingham 1969-4-20 15 Butte N side of Skyway, next diversion canal, 3 mi se Chico. 91 Comment
  SEINET10470794  Marsilea vestita Lowell Ahart, Peter Ahart 1983-7-10 Ahart 4191 Butte T21N R2E sec 25. Ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 13 mi n of Oroville. Valley Grassland; 65 m. 65 Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC11385  Matricaria discoidea Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3343  Maytenus boaria Robert L. Smith 1966-3-1 11 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  UCR208956  Meconella denticulata H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  CDA32010  Medicago lupulina L. Ahart 2009-6-3 15834 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 Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC75971  Medicago polymorpha Lowell Ahart; Vernon Oswald 1999-8-13 8162 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
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  CHSC951  Medicago sativa J. Rafferty 1931-6-5 Butte 1st St. near Broadway, Chico. 57 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  CAS-BOT-BC271131  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi S of Lomo, 2.3 mi S of ford over Cedar Creek 1219 Comment
  UC1609072  Melica aristata Lowell Ahart 1993-6-26 7022 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge, on e side of dirt road); Mooreville Ridge 1188 Comment
  UCR115081  Melica aristata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13148 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC269383  Melica californica John Thomas Howell 1955-6-14 30458 Butte Magalia 731 Comment
  CHSC82664  Melica californica Tara Morgan 2002-4-23 37 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate trail of Highway 32. 414 Comment
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CHSC2163  Melica californica var. nevadensis M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET10559685  Melica californica var. nevadensis A. Arthur Heller 1915-4-20 Heller 11860 Butte 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. In the digger pine and oak belt. 76 Comment
  CAS-BOT-BC282050  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  UC600751  Melica fugax H. F. Copeland 1932-6-29 Butte between Jones Creek and Willow Creek; Jonesville Comment
  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
  CAS-BOT-BC262457  Melica subulata E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  CDA15366  Melica subulata G. F. Hrusa 1997-5-29 13799 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Uncommon in this form, but the species relatively common here in dry shaded areas. Low area near creek. Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  UCD89083  Melica torreyana August L. Hormay 1929-6-24 s.n. Butte East of Chico, Deer Creek, near Murphy. Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  JEPS108134  Melissa officinalis Lowell 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 Big Bend Road 293 Comment
  CHSC102616  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte Along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10498159  Mentha arvensis Mary Susan Taylor 1975-10-4 Taylor 957 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC756  Mentha canadensis E. Walker 1932-7-26 Butte Magalia Heights. 731 Comment
  CHSC65168  Mentha pulegium Lowell Ahart 1995-8-19 7619 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  JEPS102335  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at margin of the Thermalito Afterbay, W of Larkin Rd, 1 1/4 mi S of Oroville Airport) 42 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 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
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CHSC30798  Micranthes californica M. S. Taylor; J. D. Jokerst 1980-4-18 2517 Butte Along creek w side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC65437  Micranthes californica Vernon Oswald 1983-3-16 190 Butte Upper Bidwell Park, Chico, near the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  CHSC1674  Micranthes integrifolia L. Oliver; D. Sloan 1935-2-23 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC3350  Micranthes integrifolia Robert L. Smith 1966-3-4 43 Butte Upper Bidwell Park, 7 mi. NE of Chico. Comment
  CHSC64220  Micranthes oregana S. C. Morey 1983-8-2 677 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET223506  Microcala quadrangularis Unknown 1980-5-7 3294 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Maryville, 30 Comment
  SEINET10475174  Micropus californicus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5382 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  CHSC90803  Micropus californicus var. californicus Lowell Ahart 2005-4-18 11738 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
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  UCD134514  Micropus californicus var. californicus M. Vincent 1963-6-6 373 Butte one mile west from Nelson Bar Road. Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  CHSC40298  Microseris douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC348880  Microseris douglasii subsp. douglasii Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10474315  Microseris lindleyi Lowell Ahart 1985-4-24 Ahart 4883 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  SEINET10830535  Mimulus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5242 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 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
  UCD111670  Mimulus bicolor Christopher Mallek 2008-1 HW1- 10 Butte Magalia. 756 Comment
  UC1609082  Mimulus breweri Lowell Ahart 1993-6-20 6982 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  HSC73003  Mimulus glaucescens M. S. Taylor 1981-7-10 4061 Butte N side of Feather River, Hwy. 70 at Pulga bridge, ca. 20 mi. NE of Oroville 488 Comment
  UC196162  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek Comment
  SEINET10570228  Mimulus glaucescens Lowell Ahart 1985-5-15 Ahart 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10570231  Mimulus glaucescens Mary Susan Taylor 1986-5-6 Taylor 5616 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
  CHSC118862  Mimulus guttatus Christopher T. Ivey 2017-5-27 388 Butte Honeyrun Road, about 3 km NE of bridge crossing Butte Creek, wet meadow E side of road. 163 Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area Comment
  JEPS80613  Mimulus guttatus M. S. Taylor 1980-4-18 2501 Butte ca. 1 mi s Nimshew (ca. 1/4 mi e of Nimshew Rd.); Paradies quad. 609 Comment
  RSA754947  Mimulus guttatus L. Ahart 2008-5-12 14737 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC886180  Mimulus guttatus A. A. Heller 1917-7-26 12813 Butte Butte Meadows 1280 Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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Mar 10 2006
  RSA754817  Mimulus moschatus L. Ahart 2009-6-30 15978 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  UC600645  Mimulus primuloides H. F. Copeland 1920-7-11 362 Butte Scotch John Meadow Jonesville Comment
  SFV3401  Mimulus torreyi M. L. Vincent 1960-7-12 96 Butte Sierra Nevada On shore of new Paradise Dam, north of Paradise. 780 Comment
  UC175540  Mimulus torreyi A. A. Heller 1913-6-7 10799 Butte near Stirling 1074 Comment
  UCD85076  Mimulus torreyi Dena Grossenbacher; Marisano James 2009-6-7 1033 Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  JEPS119684  Mimulus tricolor Lowell Ahart 2012-5-2 17962 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC56384  Mimulus tricolor Mrs. R. W. Summers 1886-5 Butte Comment
  UCD122947  Mimulus tricolor L. Ahart 1978-5-1 1687 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  JEPS108746  Minuartia californica Lowell Ahart 2006-4-28 12550 Butte About 50 yards north of the rim of Beatson Hollow, about 120 yards south of the poor dirt road, about 1/8 mile southeast of the reservoir, about 2 1/8 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 mil 299 Comment
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  CDA11950  Minuartia douglasii G. F. Hrusa, J. Hart 1989-4-15 5920 Butte Sierra Nevada; North Table Mountain, Comment
  CHSC35045  Minuartia douglasii R. A. Schlising 1980-6-12 3690 Butte 0.25 mi S of Tehama County line, along Hwy 32 near Lomo. 1121 Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  CHSC116321  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC42101  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  PASA603  Mollugo verticillata Frank W. Peirson 1926-6-20 Butte Banks of Sacramento River, 5 miles west of Chico Comment
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  SEINET10537425  Mollugo verticillata Mary Susan Taylor 1974-10-11 Taylor 331 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  SEINET10537427  Mollugo verticillata Mary Susan Taylor 1980-7-6 Taylor 3052 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET8263327  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC1562432  Monardella breweri subsp. lanceolata Lowell Ahart 1990-5-25 6496 Butte Near the high water line of the Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles northwest of the of the Enterprise Bridge across Lake Oroville 277 Comment
  UC600443  Monardella odoratissima subsp. pallida E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CHSC39669  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Rd., about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  JEPS115268  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 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
  RSA70492  Monardella sheltonii C. C. Bruce 1898-05 2452 Butte Chico Creek. [county uncertain: not specified on voucher label] Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  UCD139994  Monochoria vaginalis John M. Tucker; B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station. Comment
  CHSC34085  Montia chamissoi C. Glascock 1965-5-15 418 Butte Butte Meadows public campground 0.5 mi. W of Humboldt-Scout Rd. intersection. 26.1 mi ne of Chico city limits. Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  CHSC34213  Montia parvifolia M. S. Taylor 1981-4-28 3568 A Butte Along Four Trees Rd in wet mossy areas near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  CHSC20539  Morus alba Pamela Caldwell 1972-3-18 Butte Back parking lot of A. J. H. Bldg. CSUC campus. Comment
  CAS-BOT-BC260536  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  CHSC61372  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  UCD87063  Muhlenbergia rigens L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CDA32552  Muhlenbergia rigens M. J. Stewart 1976-9-21 Butte Railroad right-of-way between West Liberty St. and Locust Rd., Gridley. 0 Comment
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC80653  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 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 southeast of Oroville. 38 Comment
  SEINET8470605 Image available Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  SD4132  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville 1600 Comment
  CHSC105179  Navarretia capillaris B. Castro; L. P. Janeway 1999-8-1 1021 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CHSC93987  Navarretia divaricata subsp. divaricata R. D. Fischer 2004-6-20 780 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC230290  Navarretia eriocephala A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon (near Clear Creek) Comment
  JEPS107911  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  CAS-BOT-BC230302  Navarretia heterandra A. A. Heller 1913-5-25 10758 Butte Near Pents 152 Comment
  CHSC109730  Navarretia heterandra B. Castro 2006-5-25 1534 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  UCD33122  Navarretia heterandra Beecher Crampton 1966-6-27 7767 Butte Butte County, ca. 13 miles N.W. of central Chico (indirect line) about 1 mile east of Hwy. 99, Roney Ranch. Comment
  CHSC38592  Navarretia leptalea Vernon Oswald 1982-7-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the Diversion Channel. Along the edge of a pool. 79 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  CHSC112882  Navarretia leucocephala subsp. leucocephala Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  JEPS95795  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte about 5 miles (air) southwest of Gridley; ; 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC12747  Navarretia pubescens L. V. Ritter 1969-5-5 262 Butte Ca 200 yds. w of Horseshoe Lake, Bidwell Park, 50 yds. n of the Park Rd. Comment
  UC1008720  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  UC1719846  Navarretia pubescens David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CAS-BOT-BC232628  Navarretia pubescens Clare B. Hardham 1975-6-7 20432 Butte Cherokee Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  SEINET3860241  Navarretia tagetina Leigh A. Johnson 2004-5-15 04 -064 Butte Eastbound from Chico on Skyway Drive, in 10 meters between large pullover area and fence, 4.2 miles west of Skyway crossroad; 5.3 miles west of Neal jct.; 0 209 Comment
  RSA0000011  Nemophila fallax C. C. Bruce 1897-03 2037 Butte [No location information on label.] Comment
  CHSC39092  Nemophila maculata R. A. Schlising 1980-4-7 3560 Butte N of Rackerby in s part of county; Swedes Flat Road, 0.2 mile e of Hurleton-Swedes Flat Road. Comment
  CAS-BOT-BC7185  Nemophila pedunculata H. E. Brown 1897-3-3 173 Butte Clear Creek Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  SD4034  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  SEINET10497063  Nemophila spatulata Mary Susan Taylor 1981-5-22 Taylor 3794 Butte T23N R5E nw/nw sec 30, Pulga quad. Ridge running SE from Flea Mt, both sides of Flea Mt Rd, ca. 1/4 air mi E of Flea Mt, ca. 5 air mi E of Magalia. Yellow Pine Forest; 4000 ft. 1219 Comment
  CHSC32130  Nicotiana acuminata var. multiflora L. Ahart 1978-7-15 1783 Butte Near the garden; Peter Ahart Ranch, Honcut. 50 Comment
  CHSC61338  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  JEPS120593  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  SEINET10500398  Orobanche vallicola Mary Susan Taylor 1974-10-11 Taylor 330 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. Comment
  POM252937  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  RSA715538B  Orthocarpus lacerus L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  POM297983  Orthocarpus pusillus A. A. Heller 1919-4-12 13106 Butte Cherokee mine. Comment
  CHSC42635  Osmorhiza chilensis Vernon Oswald 1985-6-17 1840 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  CHSC11039  Oxalis corniculata Lowell Ahart 1969-5-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4056  Oxalis corniculata J. Wheeler 1967-5-20 29 Butte In lawn at 248 Serviss St. Durham. Comment
  JEPS110382  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CHSC109848  Packera eurycephala var. lewisrosei L. P. Janeway 2012-6-7 10864 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-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
  CHSC31630  Panicum acuminatum var. acuminatum L. Ahart 1974-6-24 500 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UCD88205  Panicum acuminatum var. fasciculatum E. G. Cakin 1947-5-30 s.n. Butte Bidwell Park, Chico. Comment
  CHSC47625  Panicum capillare Lowell Ahart 1974-8-14 601 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CDA2143  Panicum rigidulum J. T. Howell 1961-9-22 36714 Butte Bank of Feather River, Oroville. Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  JEPS127017  Parentucellia viscosa Lowell Ahart 2016-5-24 20873 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
  RSA712869  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern Sierra Nevada Foothills. Above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  UC625524  Parvisedum pumilum Frank W. Gould 1938-4-23 306 Butte 2 mi n of Chico (along road) 60 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 yards north 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) north of Oroville. 304 Comment
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC11889  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville. 1550 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  CHSC24857  Pedicularis densiflora M. B. Simpson 1976-4-4 15 Butte Ca. 5 yds s of Villas Rd, ca. 1 mi e of junc of Villas Rd and Cohasset Rd, Cohasset. 855 Comment
  CHSC9267  Pedicularis densiflora D. C. Burns 2002-3-20 103 Butte Ca. .4 mi e of the intersection of Cohasset rd. and Vilas rd., growing 10 yds, n side of Vilas rd. 381 Comment
  CAS-BOT-BC71203  Pellaea andromedifolia Lillian Mott 1969-4-27 s.n. Butte Table Mt. Comment
  SBBG128079  Pellaea andromedifolia L. Ahart 2009-5-30 15781 Butte N of a broad open dainage in oak woodland, ca. 100 yards N of the dirt rd which is Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi W of Hwy 32, ca. 10 mi NE of Chico 269 Comment
  SEINET10529807  Pellaea mucronata Mary Susan Taylor 1980-4-6 Taylor 2431 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 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
  UC1609391  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  CHSC42869  Penstemon azureus Lowell Ahart 1987-5-9 5580 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  CHSC1866  Penstemon heterophyllus var. purdyi L. Oliver; D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  UC887074  Penstemon heterophyllus var. purdyi A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road 3 mi from Chico; 3 mi from Chico Comment
  SBBG7173  Penstemon laetus H. and M. Dearing 1938-6-20 2049 Butte 20 mi NE of Chico Comment
  RSA592500  Penstemon laetus subsp. leptosepalus S. O. Mattoon 1970-6-12 17 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC104792  Penstemon laetus var. leptosepalus L. P. Janeway 2010-6-19 10025 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  NY627285  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte Little Summit near Butte Meadows 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
  NY627402  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  CAS-BOT-BC239453  Penstemon rydbergii var. oreocharis C. S. Robinson 1929-7-4 124 Butte Lassen National Forest, Colby Mdw. 1219 Comment
  RSA401866  Penstemon speciosus M. M. Boney 1897-1 s.n. Butte [No location information provided.] Comment
  UC122974  Pentagramma pallida Mrs. R. M. Austin May, 1883 84 Butte Iron Canyon above Chico Comment
  CHSC28893  Pentagramma triangularis M. S. Taylor 1980-2-23 2319 Butte Ca. 1/4 mi n of Neal Rd, on north-facing bluffs looking into Nance Canyon, ca. 4 mi sw of Paradise. 198 Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  SEINET12320811  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-1 2390 Butte Macabes Creek canyon, ca 100 ft E of Lumpkin Rd, ca 2.5 mi N of junction with Forbestown Rd 396 Comment
  JEPS104146  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC1972  Perideridia bolanderi subsp. involucrata M. Underhill 1952-7-2 Butte 243 Comment
  UC1390028  Perideridia bolanderi subsp. involucrata T. I. Chuang and L. Constance 1967-6-21 6058 Butte 1.9 mi se Highway 70 (on road from Cherokee to Oregon City) Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC40228  Perideridia kelloggii Vernon Oswald 1985-6-22 1859 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft w of the turn-around at the end of Upper Park Rd. 207 Comment
  CHSC105535  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  SEINET10454550  Perideridia lemmonii Lowell Ahart 1985-8-11 Ahart 5160 Butte Peter Ahart Ranch about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC43247  Persicaria hydropiper Lowell Ahart 1987-10-22 5921 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CHSC36528  Persicaria hydropiperoides L. Ahart 1982-8-22 3748 Butte Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. On wet sand along the edge of North Honcut Creek. 50 Comment
  JEPS119938  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte 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. 426 Comment
  SEINET207369  Petrorhagia dubia Rimo Bacigalupi, G. T. Robbins; F. Chisaki 1956-4-19 5615 Butte Along road from Oroville to Bangor, 5.3miles North of Bangor. 183 Comment
  CHSC6003  Petunia M. MacArthur 1968-6-19 245 Butte In flr. bed ca. 20 ft. SE of main entrance to Administration bld., Chico State College. 60 Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the 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
  SFV11584  Phacelia egena M. L. Vincent 1964-4-9 535 Butte 2 miles south of Pearson Road on Clark Road. Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  JEPS87202  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake, near cliffs) 1798 Comment
  CHSC54302  Phacelia purpusii Vernon H. Oswald; Lowell Ahart 1991-6-5 4649 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC38465  Phacelia ramosissima var. ramosissima Vernon Oswald 1983-6-13 670 Butte Upper Bidwell Park, Chico., ca. 200 ft s of the footbridge at the Golf Course. 91 Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10949139  Phalaris paradoxa Lewis S. Rose 1937-6-11 Rose 37381 Butte 7 mi W of Honcut. Open fields 23 Comment
  CAS-BOT-BC77371  Philadelphus lewisii Lowell Ahart 1983-6-21 4080 Butte along Bloomer Hill Road, about 3/4 miles west of the Oroville Quincy Highway, about 15 miles northeast of Oroville 425 Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  UCR115104  Phleum pratense G. Fred Hrusa, T. D. Wilfred 1996-7-9 13147 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC35093  Phlox diffusa R. A. Schlising 1980-6-10 3670 Butte Along Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  JEPS122446  Phlox speciosa L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. Quad: Forbestown 7.5'. Comment
  SEINET10969534  Phoradendron bolleanum subsp. densum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5396 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  SD1138  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC86068  Phoradendron villosum R. D. Fischer 2004-1-4 46 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. East side of Upper Park Road between Diversion Dam and Salmon Hole. 213 Comment
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  UC1191813  Phyla lanceolata Herbert L. Mason and Verne Grant 1946-8-14 13033 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CDA9258  Physalis acutifolia D. G. Kelch 2006-8-2 6 .336 Butte Along Ord Ferry Rd. Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC11340  Physalis lancifolia Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA325148  Physocarpus capitatus M. S. Taylor, L. Hanson 1981-5-17 3805 Butte Along creek, Phillips property, 685 Wagstaff, Paradise. 579 Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CDA23904  Phytolacca americana D. G. Kelch 2006-8-2 6 .347 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC89438  Phytolacca americana Lowell Ahart 2004-9-28 11405 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  JEPS120021  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC76936  Pilularia americana John Thomas Howell; Gordon H. True 1967-5-7 42176 Butte Northwest outkirts of Oroville north of the Feather River. Comment
  CHSC11774  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville. 1550 Comment
  POM220654  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CAS-BOT-BC72806  Pinus sabiniana A. A. Heller 1913-3-9 10690 Butte Hills two miles north of Oroville. Comment
  CHSC86581  Piperia elongata L. P. Janeway; Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CHSC54351  Piperia michaelii Lowell Ahart 1991-5-12 6653 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  CHSC65868  Piperia transversa L. P. Janeway 1995-7-15 4856 Butte Watson Ridge, about 1.7 mi east-northeast of its western end. Along Road 21N25A. 1097 Comment
  SEINET10529964  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-8 Taylor 2374 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC116644  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  CHSC26781  Plagiobothrys austiniae M. S. Taylor; M. Hayes 1978-4-14 1569 Butte In vernal pools on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College Campus. 30 Comment
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  CHSC90103  Plagiobothrys fulvus M. A. Carlson 1991-4-12 17 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  UC725762  Plagiobothrys fulvus A. A. Heller 1926-4-19 13922 Butte along road to Pentz about 2 mi from junction with the Chico-Oroville road Comment
  UC1442621  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-6 Butte 3 mi nw Bangor 110 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
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, 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
  JEPS117203  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-22 16715 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC26801  Plagiobothrys greenei M. S. Taylor 1978-4-14 1567 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
  CHSC87225  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  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
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  CHSC29404  Plagiobothrys hispidulus R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3788 Butte 3.2 mi SE of Butte Meadows on Bull Hill Road. In small meadows along Bull Creek. 1511 Comment
  UC480661  Plagiobothrys hispidulus H. F. Copeland 1930-6-10 Butte Jonesville 1524 Comment
  CHSC167  Plagiobothrys nothofulvus Edna Canfield 1904-4-9 Butte Hooker Oak field 76 Comment
  UCD80166  Plagiobothrys nothofulvus CNPS SN Foothill Team 2005-4-6 SNFN 0099 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, Oroville. Stand on mesa NW of parking area, approximately 1 mile; 123 degrees east of south fork of Coal Canyon, extends to west and north of releve location. 383 Comment
  UC196296  Plagiobothrys shastensis A. A. Heller 1914-4-6 11267 Butte low hills 8 mi n Oroville Comment
  UCR208989  Plagiobothrys stipitatus Richard R. Halse 2002-3-27 6156 Butte Sacramento Valley, at the junction of State Hwy 99 and Hamilton Nord Cana Hwy c. 8 miles NW of Chico 40 Comment
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC29043  Plagiobothrys stipitatus var. micranthus J. D. Jokerst 1979-4-6 544 Butte At the edges of dry vernal pools (at the high water mark). Top of North Table Mt, N of Cherokee Rd. 403 Comment
  CHSC60967  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1993-5-17 6946 Butte Vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC84252  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  SEINET9084913  Plagiobothrys stipitatus var. micranthus L. Ahart 2000-5-18 8373 Butte Ca 0.125 mile W of the Oroville Airport and Larking Road, E of the cottonwood trees, ca 4.5 air miles SW of Oroville. 37 Comment
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  JEPS93833  Plantago coronopus Lowell Ahart 1998-7-1 8030 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC24157  Plantago erecta B. Bunge 1976-4-22 20 Butte Ca 100 yds s of Skyway, ca 8 mi ese of Chico. 259 Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  CHSC83915  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CHSC94585  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC68911  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS87172  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CDA39507  Platanthera leucostachys T. C. Fuller 1962-7-12 9174 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS119841  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 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. 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
  CHSC4202  Plectritis macrocera 1967-4-10 14 Butte In field on W. side of Cherokee Rd., 8 1/2 mi. N. of Oroville. 373 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
  CHSC113108  Poa annua Lowell Ahart 2013-11-13 19245 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
  CHSC38842  Poa annua Vernon Oswald 1983-2-14 75 Butte Upper Bidwell Park, Chico, in Parking Area K at Bare Hole (1 mi e of the power lines). 109 Comment
  CHSC96379  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC74172  Poa compressa B. Castro 1998-7-8 807 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. At end of old dirt rd at E edge of old homestead site. Near edges of meadow. 929 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 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
  CAS-BOT-BC255787  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico Comment
  CHSC42451  Poa pratensis Lowell Ahart 1987-5-6 5560 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
  UC478556  Poa pringlei E. B. Copeland 1931-6-22 606 Butte the Summit Jonesville 2000 Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  JEPS115961  Poa secunda subsp. secunda Lowell Ahart 2009-4-22 15599 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-BC244171  Poa trivialis Javier Penalosa 1962-6-18 2452 Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC52057  Pogogyne zizyphoroides R. A. Emmrich 1975-5-6 55 Butte Roadside w of Chico-Oroville Hwy, 1/4 mi n of intersection with Hwy 99. 76 Comment
  SEINET10968992  Pogogyne zizyphoroides Mary Susan Taylor 1975-4-29 Taylor 538 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC11948  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  UCD98405  Polycarpon tetraphyllum L. Ahart 1976-4-27 1148 Butte Along North Honcut Creek. Near Honcut. 45 Comment
  UC1094004  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte on Pentz Road 6 mi se Paradise 426 Comment
  UC726743  Polygala cornuta var. cornuta A. A. Heller 1941-6-22 16180 Butte Cohasset Comment
  RSA280329  Polygonum alpinum Lyman Benson 1932-7-28 3972 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA713013  Polygonum arenastrum L. Ahart 2005-12-11 12521 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CAS-BOT-BC109140  Polygonum bidwelliae Lowell Ahart 1984-5-7 4593 Butte About 0.5 mile north and a little east of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  CHSC63715  Polygonum californicum Lowell Ahart 1994-10-8 7553 Butte Open low rounded mounds, east of the large 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
  SEINET260317  Polygonum lapathifolium Lowell Ahart 1986-11-9 5452 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
  CHSC113482  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC44226  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir. On drier margins of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  SEINET10479661  Polygonum parryi Mary Susan Taylor 1980-7-6 Taylor 3066 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UCR263557  Polygonum punctatum Vernon H. Oswald, Lowell Ahart 1996-7-22 8077 Butte Sacramento Valley, Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common among tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I 32 Comment
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  SEINET10530407  Polypodium californicum Mary Susan Taylor 1973-1 Taylor 54 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC4720  Polypodium calirhiza R. Carter 1966-4-28 377 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds up 23N28 on W side of road. 640 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  CAS-BOT-BC72028  Polypodium calirhiza M. Gregg 1966-3-7 37 Butte On Humbug Rd. at the covered bridge, approx. 9 miles from the CSC campus, hill directly behind the covered bridge 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
  SEINET10530119  Polystichum imbricans Mary Susan Taylor 1978-7-21 Taylor 1799 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC113598  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 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
  CDA42715  Polystichum imbricans subsp. imbricans L. Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 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. Comment
  RSA700221  Polystichum imbricans subsp. imbricans L. Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  CHSC28001  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte On se corner of Lake Madrone, at jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  CHSC33978  Polystichum munitum M. S. Taylor 1981-5-14 3708 Butte S side of 22N49 at jct where creek crosses the rd (next creek e of Little Ram Creek), ca. 1 mi sw of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi n of Mt House on Oroville-Quincy Hwy. 975 Comment
  CHSC35698  Populus fremontii J. D. Jokerst 1982-5-1 1554 Butte Ca. 200 met E. Phantom Falls at the N Fork of Coal Cr. Canyon. Comment
  CHSC116124  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) Southeast of Paradise. 207 Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1562274  Portulaca oleracea Lowell Ahart 1990-7-4 6549 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (below the high water line Lake Oroville, along McCabe Creek); McCabe Creek 243 Comment
  CHSC28622  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  UC1099871  Potamogeton foliosus Herbert L. Mason, Verne Grant 1946-8-8 12999 Butte near Pennington Road (Reclamation Ditch 833 on West Gridley Road); Reclamation Ditch 833 Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  UCD23442  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Leaves floating on top of water, in irrigation canal alongside of rice plot. Comment
  CHSC66689  Potamogeton nodosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8090 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 Comment
  CHSC45739  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-27 2366 Butte Near creeklet on E slope of Bald Mtn. 1706 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  POM275136  Potentilla gracilis var. fastigiata Lyman D. Benson 1932-7-28 3971 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CAS-BOT-BC158500  Potentilla millefolia H. F. Copeland 1931-6-11 s.n. Butte Jonesville, Butte Creek Meadows 1828 Comment
  CHSC28731  Proboscidea louisianica M. Banchero; R. Schlising, R. Banchero 1979-9-23 45 Butte SW of Chico, along Ord Ferry Road, 3.7 mi W of jct Ord Ferry and Goodspeed--Watt Roads (= Dayton Four Corners). Comment
  UC1321007  Prunella vulgaris var. lanceolata Andrew P. Nelson with J. Weiler 1960-6-22 574 Butte Lassen National Forest Butte Meadows campground; , Butte Meadows campground 1325 Comment
  CHSC52697  Prunus caroliniana L. P. Janeway 1990-3-25 3659 Butte Campus of California State University, Chico. S side of Big Chico Cr at bridge between Sylvester's Cafe-by-the-Creek and Holt Hall. 59 Comment
  CAS-BOT-BC159923  Prunus emarginata H. F. Copeland 1920-8-29 160 Butte Jonesville wood 1219 Comment
  CHSC26698  Prunus emarginata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1474 Butte On s side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  RSA715830  Prunus emarginata L. P. Janeway 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National forest; on Sawmill Peak, 560 m E-SE of the lookout tower; 2.4 km E of Magalia. Edge of old roadway. 966 Comment
  UC481515  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  CHSC27231  Prunus serrulata P. Moyer 1972-3-18 148 Butte CSUC Campus. Front lawn Sociology Bldg. 60 Comment
  CHSC38351  Pseudognaphalium stramineum Vernon Oswald 1983-5-27 560 Butte Upper Bidwell Park, Chico, 200 ft n of Upper Park Rd. at Diversion Dam. 121 Comment
  JEPS20400  Pseudognaphalium thermale W. L. Jepson 1939-8-17 19466 Butte Feather River bottom near Oroville; Feather River 45 Comment
  UC852192  Pseudostellaria jamesiana A. A. Heller 1915-6-27 12039 Butte Jonesville; Sierra Nevada, Jonesville 1676 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  CHSC48190  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1983-5-11 465 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CAS-BOT-BC361824  Psilocarphus oregonus Lowell Ahart 1970-5-12 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 150 Comment
  HSC67625  Ptelea crenulata J. P. Smith, J. O. Sawyer 1973-4-14 6063 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  CHSC20254  Pteridium aquilinum var. pubescens W. E. Hartman 1972-4-29 2 Butte Along road side opposite Centerville Cemetary. 213 Comment
  CHSC20719  Pteridium aquilinum var. pubescens M. S. Taylor 1975-8-31 897 Butte On w side of Butte Creek, ca. 5 ft n of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC39367  Pteridium aquilinum var. pubescens L. Ahart; P. Ahart 1983-9-21 4463 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC115351  Pyracantha koidzumii Lowell Ahart 2015-1-27 19922 Butte East side of an irrigation ditch, in a pasture field, about 30 yards north of East Gridley Road, about 1/4 mile east of Highway 99E, east of Gridley. 29 Comment
  CHSC110840  Pyrola aphylla David Isle; Ana Mendez 1989-7-3 f 2009 Butte Mendocino Natl. Forest-North Coast Ranges Briscoe Creek Watershed. N sslope of Noel Slprings Ridge, 0.9 mi NW (up) Clover Creek Rd 20N41 from 20N71/20N41. N of cull deck. 1292 Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CHSC110099  Pyrus calleryana L. P. Janeway 2012-2-28 10787 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CHSC110978  Pyrus kawakamii Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18230 Butte On the north side of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC5941  Pyrus kawakamii M. MacArthur 1968-6-17 215 Butte Ca. 10 ft SW PSA bld., Chico State College campus. 60 Comment
  CHSC110035  Quercus Lowell Ahart; Josephine Guardino, 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  CDA21847  Quercus berberidifolia J. T. Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz. Comment
  CHSC29708  Quercus chrysolepis J. D. Jokerst 1980-4-21 630 Butte Top of North Table Mt., N of Cherokke Rd. 381 Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  UCD170496  Quercus chrysolepis D. O. Burge 2017-3-18 2230 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CAS-BOT-BC86632  Quercus douglasii A. A. Heller 1913-10-1 11145 Butte Hills near Big Chico creek, E of Chico Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  CHSC42532  Quercus durata var. durata Lowell Ahart 1987-5-11 5618 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC31828  Quercus lobata L. Ahart 1978-3-21 1618 Butte Along edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC627  Quercus lobata J. Foster 1928-4-25 Butte Bidwell Park. 60 Comment
  CHSC77341  Quercus lobata L. P. Janeway 2000-3-29 6648 Butte Sacramento Valley. At edge of River Road 0.5 mi south of Hwy 32; near Pine Creek. Along fenceline between road and orchard. 43 Comment
  CAS-BOT-BC104489  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  SBBG50717  Quercus vacciniifolia J. I. Mallory 1970-8-20 378 Butte 0.75 mi N of Ramsey Bar, ca. 10 mi NE of Stirling City Comment
  CHSC622  Quercus wislizeni var. frutescens M. Roberson 1956-4-7 Butte SW of Paradise along Skyway. 426 Comment
  JEPS113212  Quercus wislizeni var. wislizeni Lowell Ahart 2007-3-28 13597 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 73 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 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. In the largest lake. 1935 Comment
  CAS-BOT-BC379111  Ranunculus aquatilis var. diffusus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte in and along west branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 1615 Comment
  CHSC1472  Ranunculus arvensis M. Anthony 1953-4-16 Butte Dr. Benedict's ranch. 60 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte On the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  JEPS104176  Ranunculus canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  UCD95793  Ranunculus canus Perry Allen 1961-3-9 s.n. Butte Vicinity of La Grange. Comment
  SBBG71846  Ranunculus canus var. canus A. A. Heller 1926-3-31 13916 Butte Nelson, 14 mi S of Chico Comment
  UC176135  Ranunculus occidentalis A. A. Heller 1913-4-5 10705 Butte above Oroville (n side of Feather River) Comment
  CHSC46848  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 249 Butte S part of county, ca. 1.5 mi s of Hurleton. Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC48827  Ranunculus sardous Vernon Oswald 1987-5-26 2931 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On the edge of a pond. 48 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  CHSC52694  Ranunculus uncinatus var. uncinatus Kirsten Tarp 1983-8-6 334 Butte Near Butte Meadows, on Bull Hill Rd. 0.2 mi from its jct with Humboldt Rd. Near creek. 1325 Comment
  CHSC38033  Raphanus raphanistrum R. E. Preston 1982-11-13 364 Butte At roadside, n side of Hwy 70 at Wicks Corner, ca. 5 1/2 mi nw of Oroville. 85 Comment
  RSA197844  Rhamnus ilicifolia L. S. Rose 1955-6-15 55104 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC38638  Rhamnus tomentella subsp. tomentella Vernon Oswald 1983-5-25 553 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Growing on the edge of an abandoned road in foothill woodland. 134 Comment
  CHSC52467  Rhamnus tomentella subsp. tomentella Stacy Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centennial Ave intersection on Centennial Ave; ca 2.5 km E of Chico. 97 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  RSA712801  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  CAS-BOT-BC199744  Rhododendron occidentale var. californicum A. A. Heller 1913-6-7 10800 Butte Near Stirling 1074 Comment
  CHSC84696  Rhus ovata Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between an un-used parking lot along Oroville Dam Blvd. and the Palermo Canal, 1460 ft west of the southeast end of Oroville Dam. 182 Comment
  JEPS109898  Rhynchospora capitellata Dean W. Taylor 2006-8-17 19608 Butte Bald Mt.; West Branch Feather River watershed; Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank 1676 Comment
  JEPS98612  Rhynchospora capitellata Lowell Ahart 2000-6-27 8532 Butte Seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET3913006  Rhynchospora capitellata Vernon Oswald, Lowell Ahart 1990-7-31 4424 Butte Yellow Pine Forest: Flea Valley bordering Concow Road, about 4 miles north of Concow.; 0 1128 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC69046  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1432 Comment
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CHSC3607  Ribes roezlii Gerry Carrauthers 1966-3-5 28 Butte E. of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  SEINET10482951  Ribes roezlii Mary Susan Taylor 1978-9-9 Taylor 1915 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  JEPS32559  Rorippa Duncan Dunning 1921-7-30 Butte Butte Meadows Comment
  CAS-BOT-BC74469  Rorippa curvisiliqua H. F. Copeland 1920-7-11 59 Butte Scotch John Meadow. 1828 Comment
  UC1594677  Rorippa curvisiliqua Lowell Ahart 1992-3-21 6738 Butte s Spillway Boat Launch Area (below the high water line Lake Oroville); below the high water line of Lake Oroville 243 Comment
  CHSC40442  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-21 4878 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC116289  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-10-25 20591 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  CDA42871  Rosa californica L. Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Park. Comment
  UC1926778 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  UCD149867  Rotala ramosior William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CHSC101819  Rubus armeniacus Lowell Ahart 2009-5-23 15771 Butte 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
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC115154  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 20 yards north 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) north of Oroville. 304 Comment
  CHSC104851  Rumex crispus Lowell Ahart 2010-6-12 16793 Butte On the west side of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 188 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC71172  Sagina apetala Lowell Ahart 1998-6-9 8003 Butte In a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC36073  Sagina procumbens R. A. Schlising 1982-5-29 4228 Butte Chico; State University campus on n side of Library. Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC93977  Salix exigua R. D. Fischer 2004-6-20 772 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Along water edge at south end of pond. 1371 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC125316  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CHSC108810  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC65017  Salix lemmonii Vernon H. Oswald 1987-8-10 3204 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  LA208857  Salix lemmonii E. B. Copeland; 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750.0 Comment
  LA208858  Salix lemmonii E. B. Copeland; 1931-8-1 620 Butte Jonesville 1700.0 Comment
  HSC32607  Salix lutea R. A. Vanbianchi 1974-4-20 237 Butte Table Mtn. 305 Comment
  CHSC42771  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC129003  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC103226  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road. 63 Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  CAS-BOT-BC221114  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte West slope of the Sierra near Forest Ranch 822 Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  CAS-BOT-BC238617  Sambucus nigra subsp. caerulea Lowell Ahart 1968-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CHSC61636  Sambucus racemosa var. microbotrys Lowell Ahart 1993-9-8 7163 Butte About 1 mile east of Snow mountain. 2072 Comment
  JEPS94435  Samolus parviflorus Lowell Ahart 1997-10-12 7916 Butte about 12 mi se of Oroville (about 2 mi n and 2 3/4 mi e of Honcut, along North Honcut Creek); North Honcut Creek 57 Comment
  CHSC87802  Sanicula bipinnatifida Paul Maslin 2004-4-15 19 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610518E 4411342N. 316 Comment
  CHSC101186  Sanicula tuberosa L. P. Janeway; B. Castro 2009-4-18 9727 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 733 Comment
  UC566791  Sanicula tuberosa Herbert L. Mason 1927-5-11 3727 Butte vicinity of Dobbins 457 Comment
  SEINET10537480  Saponaria officinalis Mary Susan Taylor Taylor 320 Butte 61 Comment
  CHSC11800  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  CAS-BOT-BC436861  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  CHSC4153  Scandix pecten-veneris R. Carter 1966-4-2 321 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC38912  Schoenoplectus acutus var. occidentalis Vernon Oswald 1983-5-23 540 Butte Upper Bidwell Park, Chico, between the turn-around at the end of Upper Park Rd. and the east boundary of the park. 207 Comment
  UCD50073  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-7 12993 Butte Big pond near river, Grey Lodge Game Refuge; Gridley Road north of Butte Sink, Butte County. Comment
  UCD49966  Schoenoplectus mucronatus W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  POM312850  Schoenoplectus mucronatus H. L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  CAS-BOT-BC111831  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CDA13830  Scirpus acutus var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-9-5 13558 Butte Butte Basin; Butte Creek and about rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  SEINET7487248 Image available Scirpus diffusus Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11404 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek; ; W side of paved road 1448 Comment
  SEINET10938716  Scirpus microcarpus Lowell Ahart 1985-6-30 Ahart 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CDA39136  Scirpus saximontanus G. D. Barbe, T. C. Fuller 1982-6-14 3676 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  UC1609011  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte about 1 air mi nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CDA13322  Scutellaria californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13168 Butte Sierra Nevada; approx. 0.2 m. E of bridge over Marble Creek on USFS N60. Comment
  SEINET12765223  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville.; 0 76 Comment
  SEINET10499137  Scutellaria californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4060 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC85424  Scutellaria siphocampyloides John Dittes 1992-5-5 469 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  JEPS115658  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards 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 436 Comment
  CHSC24648  Scutellaria tuberosa S. Deaton 1976-4-14 16 Butte Small population 1 7/8 mi n of Feather Falls parking lot, n side of Falls trail. 853 Comment
  CHSC87928  Secale cereale Lowell Ahart 2004-5-17 10936 Butte On the south side of the Midway, about 1/2 mile east of the railroad, about 1 1/2 miles northeast of Durham. 54 Comment
  CHSC71111  Sedella pumila Jan Monelo 1989-4-11 5 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  UCD73056  Sedella pumila Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET12215938  Sedum spathulifolium Unknown 1972-1 7 Butte P.G.& E. stop, ca 1/2 mi N of Bear Creek where it flows into the N fork of the Feather River 183 Comment
  CHSC28877  Selaginella hansenii M. S. Taylor 1980-3-1 2330 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC7038  Selaginella hansenii Bryan C. Willingham 1969-2-23 25 Butte Ca 1/2 mi e of Big Chico Creek to s side of Hwy 32 and ca 1 1/2 mi n of Tenmile House site. 539 Comment
  HSC66337  Selaginella hansenii M. S. Taylor 1980-3-8 2370 Butte Shady train 100 ft. SW of Pulga Bridge over Hwy. 70, 28 mi. NE of Oroville 488 Comment
  SEINET10872368  Selaginella hansenii Taylor 1981-11-11 Taylor 3379 Butte T19N R6E sw 1/4 sec 8. Big Bend Mt. Quad. On boulders, 20 feet e of Lumpkin Rd on very wet n slope above Macabes Creek, ca 2 miles n of jct of Lumpkin Rd. and Oroville-Quincy Hwy (162), ca 13 miles ne of Oroville. 1500 feet. With Pellaea mucronata, Galium porrigens tenue, Pitrogramma triangularis semipallida. 455 Comment
  CHSC96822  Selaginella wallacei Lowell Ahart 2007-5-29 13930 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  SBBG32387  Senecio eurycephalus L. S. Rose 1967-6-11 Butte 3 mi S of Pulga, Feather River Cyn Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC101284  Senecio vulgaris Lowell Ahart 2009-4-17 15539 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CAS-BOT-BC364545  Senecio vulgaris Lowell Ahart 1980-5-4 2155 Butte Thermalito 65 Comment
  CAS-BOT-BC364548  Senecio vulgaris Lowell Ahart 1973-3-26 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  CAS-BOT-BC364731  Sericocarpus oregonensis subsp. californicus John Thomas Howell 1959-9-26 35094 A Butte At Pulga Bridge, North Fork of the Feather River Comment
  CDA2440  Setaria parviflora L. Ahart 2000-5-17 8365 Butte About 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  CHSC112631  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards southeast of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  JEPS120725  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  JEPS97334  Setaria parviflora Lowell Ahart 1995-8-19 7615 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  CHSC23434  Sherardia arvensis M. S. Camp 1974-4-27 8 Butte Collected on Table Mountain 6 mi N of Oroville. Comment
  JEPS87673  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
  CHSC35326  Sidalcea asprella M. S. Taylor; R. A. Schlising, K. Tharp 1982-4-8 4283 Butte At the end of Beckwith Rd. just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  CHSC97339  Sidalcea asprella L. P. Janeway 2007-6-26 9076 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the western side of the top of Swayne Hill; about 2.0 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 741 Comment
  SD3021  Sidalcea glaucescens E. B. Copeland 1930-7-21 Butte Jonesville. 1550 Comment
  CHSC71182  Sidalcea hartwegii Lowell Ahart 1988-6-9 7992 Butte About 300 yds west of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET11985470  Sidalcea hartwegii Unknown 1978-1 18 Butte ca 0.5 mi E of Chico Municipal Airport & 1 mi SE of Mud Creek, 5 mi N of Chico 37 Comment
  UC726656  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Paradise Grade Clear Creek, Paradise Grade Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  CHSC88953  Sidalcea hirsuta Christine Hantelman 2000-4-27 81 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  RSA21314  Sidalcea malviflora subsp. asprella Carl B. Wolf 1937-5-13 8659 Butte Sierra Nevada Foothills. 6.6 miles S. E. of Oroville on road to Wyandotte 122 Comment
  SEINET11971666  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-1 19536 Butte Oroville-Forbestown Rd, about 8 mi E of Oroville Comment
  CHSC34951  Sidalcea oregana subsp. spicata R. A. Schlising; R. Banchero 1980-7-14 3900 Butte N end of Snag Lake in north of county. 1731 Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
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May 22 2007
  UCD80449  Sidalcea robusta CNPS SN Foothill Team 2006-5-24 SNNR 0929 Butte Horning Ranch (private). 117 Comment
  CHSC54299  Silene antirrhina Vernon H. Oswald; Lowell Ahart 1991-6-5 4647 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC38302  Silene laciniata subsp. californica Vernon Oswald 1983-4-17 325 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. Near the bottom of canyon. 182 Comment
  CHSC39296  Silene laciniata subsp. californica Lowell Ahart 1983-7-29 4253 Butte Found along the edge of the dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  CHSC80519  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) southwest of Gridley. 22 Comment
  CAS-BOT-BC74933  Sinapis arvensis J. D. Jokerst 1983-4-4 1707 Butte Ca. 330 meters south of Keefer Lane alnong the P.G.&E. powerlines. 109 Comment
  CHSC118551  Sisymbrium altissimum Lowell Ahart 2017-4-22 21390 A Butte Where we park vehicals, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC35760  Sisymbrium altissimum R. E. Preston 1982-6-18 302 Butte In meadow; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  CHSC42698  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte 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
  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
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  CAS-BOT-BC75278  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 0.5 mile west of the Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  CHSC20110  Sisyrinchium bellum M. S. Taylor 1975-4-26 508 Butte Ca. 50 m ne of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  RSA727113  Sisyrinchium bellum Lowell A. Ahart 2007-4-30 13706 Butte About 1.5 miles northwest of Concow Creek, about 1.5 miles west of Concow Reservoir. 358 Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10472651  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1978-7-18 Taylor 1700 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 Comment
  SEINET3893523  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek.; 0 Comment
  JEPS115053  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC157520  Solanum umbelliferum E. D. Cantelow 1940-5-10 4486 Butte W. of Brush Creek Ranger Sta. Comment
  SD5270  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CAS-BOT-BC365383  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CHSC33105  Sonchus asper M. S. Taylor 1981-5-15 3736 Butte Se side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi n of Pulga bridge. 457 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC108129  Sonchus asper subsp. asper Lowell Ahart 2011-10-29 17723 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC38522  Spartium junceum Vernon Oswald 1983-5-4 424 Butte Upper Bidwell Park, Chico, 100 ft w of the parking lot at Day Camp. 91 Comment
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115355  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC28823  Spergularia rubra J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 415 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd. Along dirt roads. 381 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  CAS-BOT-BC147949  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC113505  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte Southwest part of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC42801  Spiraea douglasii L. P. Janeway 1987-6-26 2317 Butte SW end of Logue Meadows. 1325 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
  SBBG28490  Spiraea douglasii E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  UC176382  Spiranthes porrifolia A. A. Heller 1913-6-4 10776 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  CHSC111236  Stachys ajugoides var. rigida B. Castro; L. P. Janeway 2007-8-18 1674 Butte Northern High Sierra Nevada. Ca 10 road mi E of Quincy, along Squirrel Creek and Road 401, 1.2 mi NE of Hwy 70/89 and Williams Loop (railroad). 1267 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  UCLA70947  Stachys ajugoides var. rigida A. A. Heller 1928-7-15 14684 Butte Butte Meadows Comment
  SBBG128189  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte drainage on the E side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  CAS-BOT-BC175314  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  CHSC58902  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC61311  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte Bog on the east side of Fall River, east of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC105968  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC39044  Stellaria obtusa R. A. Schlising 1983-8-27 4452 Butte N part of county in Coon Hollow, N of Philbrook Reservoir. In streambed. Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  CHSC29806  Stephanomeria virgata subsp. pleurocarpa M. S. Taylor 1979-8-4 2173 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 457 Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  SEINET10508406  Stipa stillmanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4190 Butte T23N R4E ne sec 4. Ca. 1.5 mi se of Stirling City along road. Yellow Pine Forest; 1100 m. 1100 Comment
  UCD115991  Streptanthus diversifolius Michael A. Vincent; Ethan H. Freid 1998-4-6 8112 Butte Table Mountain. Comment
  HSC35736  Streptanthus diversifolius Dave Knorr 1974-4-20 136 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  SEINET11991671  Streptanthus diversifolius N. E. Long 1974-1 s.n. Butte atop Table Mountain, ca 600 yards W of Cherokee Rd & ca 19.9 mi SE of Chico 395 Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CAS-BOT-BC87433  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  CDA25182  Streptanthus polygaloides L. Ahart 2004-6-22 11111 Butte On the west margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 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
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  CHSC36133  Streptanthus tortuosus Thomas A. Welgan 1979-4-15 2 Butte Ca. 6 mi n of Oroville and w of Cherokee Mountain Rd 0.5 mi. Field. 365 Comment
  UCD116302  Streptanthus tortuosus Robert E. Preston 1984-6-19 462 Butte 12 km NE of Oroville, Oro-Quincy Hwy on north side of Canyon Creek bridge. 305 Comment
  UCD164125  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 83 - Butte Table Mountain. 387 Comment
  CHSC92593  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  HSC96695  Streptanthus tortuosus var. suffrutescens L. Ahart 2006-6-9 12647 Butte W side of Bardees Bar Rd., S of small stream, 0.25 mi. SW of bridge across N Fork Feather River at Bardees Bar, 2.75 mi. SW of Pulga 404 Comment
  LA212389  Styrax redivivus Jim R. Shevock; 1972-5-19 s.n. Butte North Fork Feather River Canyon. 624 Comment
  CHSC4613  Swertia albicaulis var. nitida R. Carter 1966-6-15 429 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; on bank above road. Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  POM193326  Symphoricarpos acutus E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  CHSC28511  Symphoricarpos albus var. laevigatus M. S. Taylor; J. D. Jokerst 1979-10-13 2266 Butte On Jordan Hill Rd (Ponderosa Way on some maps) at jct with Griffith Gulch, ca. 7.1 mi N of its jct with Concow Rd, ca. 2 mi SE of Magalia. 701 Comment
  CHSC11856  Symphoricarpos mollis E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  UC426982  Symphyotrichum bracteolatum E. B. Copeland 1900-1-1 Butte Jonesville, in and near springs 1500 Comment
  CHSC51351  Symphyotrichum chilense Vernon H. Oswald 1990-10-4 4455 Butte Rancho Llano Seco. Ord Ferry Rd, ca 1 mile southeast of Ord Ferry Bridge. Field between the road and the Sacramento River 30 Comment
  CHSC69668  Symphyotrichum chilense Vernon H. Oswald 1987-5-6 2376 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  CAS-BOT-BC99042  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC98090  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  UC1564747  Symphyotrichum spathulatum V. Oswald and L. Ahart 1989-8-15 3941 Butte ca. 1.2 mi air n of, Soda Ridge Road 1.4 mi w of its junct. w/ Coon Hollow Rd. Philbrook Resevoir 1737 Comment
  UC600723  Symphyotrichum spathulatum H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond 1700 Comment
  CHSC113496  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-7-16 19690 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  CHSC6017  Syringa M. MacArthur 1968-6-19 255 Butte SE wall of Auditorium bld., Chico State College. 60 Comment
  JEPS14511  Tauschia hartwegii Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5606 Butte along Oroville-Concow road 0.9 mi below its junction with Yankee Hill Road 521 Comment
  CAS-BOT-BC81333  Taxus brevifolia Lowell Ahart 1987-5-22 5682 Butte about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC40337  Taxus brevifolia Lowell Ahart 1985-7-9 5115 Butte Along the banks of the Fall River, about 100 yards south of the bridge across 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-e of Feather Falls. 914 Comment
  NY17382  Taxus brevifolia Collector unspecified 1879-1 s.n. 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
  CAS-BOT-BC445894  Tellima grandiflora Lowell Ahart 1986-5-20 5278 Butte Along road to the Forbestown Reservoir 609 Comment
  CHSC31765  Tetrapteron graciliflorum L. Ahart 1976-4-14 1065 Butte On gravel bar along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52078  Teucrium fruticans B. Castro 1988-4-10 258 Butte At extreme e end of parking lot of Five Mile Recreation Area along s side of Big Chico Ck. 83 Comment
  CHSC52195  Thalictrum fendleri var. polycarpum L. P. Janeway 1989-5-11 3232 Butte Along Deadwood Cr at jct of Concow and Jordan Hill Roads. 518 Comment
  UC480872  Thalictrum fendleri var. polycarpum R. M. Austin July 1896 655 Butte Coby<?> Comment
  SEINET10530454  Thelypteris nevadensis Mary Susan Taylor 1981-5-21 Taylor 3782 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC38426  Thysanocarpus curvipes Vernon Oswald 1983-3-13 157 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  HSC64129  Thysanocarpus curvipes J. P. Smith 1973-3-22 5921 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CAS-BOT-BC88208  Thysanocarpus curvipes A. A. Heller 1938-4-17 15039 Butte Salmon Hole, Chico Creek. Comment
  HSC27263  Thysanocarpus curvipes J. P. Smith 1972-3-23 5094 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  CHSC100975  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  JEPS117142  Thysanocarpus curvipes var. elegans Lowell Ahart 2010-4-30 16597 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10448612  Thysanocarpus curvipes var. elegans Mary Susan Taylor 1981-3-16 Taylor 3413 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC24132  Thysanocarpus radians D. Hattem 1976-4-10 20 Butte Population ca. 100 m n of Big Chico Creek, ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 10.7 mi e of Chico. 304 Comment
  SEINET11986402  Thysanocarpus radians D. B. Carlson 1980-1 9 -1980 Butte ca 4.7 km E of Chico, 2.1 km WSW of Paradise 0.2 km S of N edge of Coon Ridge, 0.1 km N of Skyway Rd 270 Comment
  CHSC100474  Tilia europaea Lowell Ahart; John Dittes 2008-11-14 15448 Butte On the north side of the deer pen, 10 yards east of the small storage building, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS105914  Tofieldia occidentalis subsp. occidentalis Lowell Ahart 2004-8-2 11322 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 Comment
  CHSC49044  Tonella tenella Vernon Oswald 1986-4-12 1067 Butte Butte Creek Trail ca. 1.5 mi s of Doe Mill Rd. 609 Comment
  JEPS119801  Torilis arvensis Lowell Ahart 2012-5-20 18091 Butte On the east side of the Humboldt Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  SFV10340  Torilis arvensis M. L. Vincent 1963-6-6 376 Butte Nelson Bar Road, 1 mile east of Pentz Road. 300 Comment
  CHSC84  Torreya californica McCarthy; Kasak 1931-6-5 Butte Halfway House between Magalia and Camp l. 762