Search Results — 2000 specimen records retrieved (1573 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  RSA384184  Abies concolor L. Ahart, Peter Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge 1 mile N of Golden Trout Crossing and 18 miles [10 road miles] E of Feather Falls [community]. 700 Comment
Read comments
Apr 30 2014
  CDA3988  Acacia dealbata L. Ahart 2003-4-3 10118 Butte On the west side of an irrigation ditch, on the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 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
  CAS-BOT-BC331608  Acer macrophyllum A. A. Heller 1921-3-28 13536 Butte Chico Comment
  CHSC22670  Acer macrophyllum Carol C. Getzinger 1964-5-1 66 Butte Along Hwy 32, 21.4 mi n of jct with Hwy 99 in Chico; 914 Comment
  CHSC2393  Acer macrophyllum R. Carter 1965-3-15 167 Butte Tree found along W side of Oroville-Forbestown Rd. .5 mi. E of intersection of Oroville Forbestown Rd. and Lumpkin Rd., Butte Co. 441 Comment
  CHSC107075  Acer negundo V. Lockie; M. S. Williams 2010-3-23 Butte Chico State University Campus. Specimen found within 50' of Big Chico Creek, south of Holt Hall. 60 Comment
  CAS-BOT-BC21750  Achillea millefolium John Thomas Howell 1962-6-16 37581 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  CHSC104816  Achillea millefolium Lowell Ahart 2010-6-12 16792 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 349 Comment
  CAS-BOT-BC210638  Achnatherum lemmonii Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CDA14054  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-1 13701 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common, but scattered throughout in dry forest openings. Perennial, bunching. Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  RSA712918  Achnatherum lemmonii var. lemmonii L. P. Janeway 2006-5-28 8638 Butte Northen High Sierra Nevada, West side of Concow Road about 3.2 mi NE of upper end of Concow Reservoir Comment
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC49579  Achnatherum occidentale subsp. californicum Vernon Oswald 1985-7-2 1873 Butte Hwy 32 2.3 mi s of Lomo. 1133 Comment
  CAS-BOT-BC216376  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak 2151 Comment
  RSA416297  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, four miles West of Paradise, overlooking Butte Creek Canyon. Comment
  CHSC30682  Acmispon americanus var. americanus M. S. Taylor 1978-7-18 1689 Butte N side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1325 Comment
  CAS-BOT-BC204849  Acmispon argophyllus var. fremontii Lowell Ahart 1984-6-8 4667 Butte Just north of the spillway at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  UCD103753  Acmispon denticulatus A. A. Heller 1914-5-1 11342 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC6600  Acmispon grandiflorus var. macranthus G. Estrem 1968-4-23 2 Butte Ca. 20 mi e of Oroville on hwy. 70. Ca. 100 yds. s of road on n facing slope. Comment
  CHSC90225  Acmispon parviflorus Eric M. Haney 1989-4-23 11 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  SEINET12765130  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC46836  Actaea rubra Kirsten Tarp 1983-8-6 332 Butte N part of county, ca. 0.9 mi w of Cherry Hill; at edge of meadow. 1417 Comment
  SDSU13784  Adelinia grandis Kate Conger Butte Brush Creek. 1077 Comment
  SD5472  Adenocaulon bicolor E. B. Copeland 1930-8-9 Butte Jonesville 1500 Comment
  UC426978  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC38244  Adiantum aleuticum Vernon Oswald 1983-6-17 702 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 200 ft w of Day Camp. 91 Comment
  UC1562402  Adiantum aleuticum Vernon Oswald and Lowell Ahart 1990-6-20 4308 Butte between Philbrook Reservoir and Carr Mine (ca 0.5 mi w of Butte-Plumas Co line, s side of Philbrook Creek) 1981 Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  CHSC107910  Aegilops triuncialis L. P. Janeway 2011-6-29 10415 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
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC295534  Agnorhiza bolanderi Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  SEINET10971289  Agoseris Mary Susan Taylor 1980-4-21 Taylor 2564 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  JEPS115882  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, 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 379 Comment
  SEINET10475107  Agoseris heterophylla Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4866 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
  CAS-BOT-BC447798  Agrimonia gryposepala Sally Bianco 1995-8-30 1023 Butte NE margin of Concow Lake near Hoffman Rd. off Concow Rd. Peninsuka between creek and lake 670 Comment
  SEINET10968367  Agropyron Mary Susan Taylor 1980-7-6 Taylor 3071 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
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  UCD169895  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte On the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CAS-BOT-BC127369  Agrostis exarata Lowell Ahart 1977-7-8 s.n. Butte Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC127375  Agrostis exarata Lowell Ahart 1982-9-13 3828 Butte Along a small stream that flows into Pinkard Creek, below the dirt road, which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC96953  Agrostis exarata Lowell Ahart 2007-7-8 14269 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UCD52416  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC138410  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-17 2289 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CAS-BOT-BC138348  Aira caryophyllea var. caryophyllea Peter H. Raven 1953-5-9 5434 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CHSC97372  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  RSA768995  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte West side of Guardians Trail, north of the small drainage, about 50 yards north of Pine Trial, about 1/4 air mile west of Highway 32, about 9 air miles northeast of Chico. 430 Comment
  CAS-BOT-BC460743  Allium amplectens Robert A. Schlising; Marc Hayes 1978-5-22 3266 Butte N of Chico along Cohasset Hwy, 4.3 mi N of Mud Creek. Comment
  JEPS85594  Allium amplectens Roger Raiche 1983-4-12 30184 Butte Rt. 32 ne Chico (plateau ridge between Big Chico Creek and Little Chico Creek) 609 Comment
  SEINET12048529  Allium amplectens E. J. Baker 1984-1 7 Butte N side of Humboldt Rd., ca 5 yds N of road, .2 mi E of intersection with Stinson Canyon Rd 58 Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  CAS-BOT-BC466718  Allium cratericola James Jokerst 1985-3-24 2177 Butte Near Lint Road 471 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  UC843376  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC49482  Allium neapolitanum Vernon Oswald 1984-3-28 1109 Butte Chico-Butte Ciy Hwy (Seven Mile Lane), 6.3 mi s of its jct. With Ord Ferry rd. Comment
  CHSC7129  Allium peninsulare Nancy Wiseman 1969-5-5 Butte Across the creek from Chico Municipal Golf Course Club House, Chico. Comment
  CAS-BOT-BC132073  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  JEPS87857  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  SEINET10935987  Allophyllum divaricatum Lowell Ahart 1991-6-22 Ahart 6662 Butte Below the high water line of Lake Oroville, north of Springtown Road, Lake Oroville. Foothill Woodland (destroyed). T19N R5E SE/S2. 244 Comment
  CAS-BOT-BC170915  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS98447  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 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
  UCD97101  Amaranthus albus L. Ahart 1982-7-10 3671 Butte 1/4 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 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
  CHSC37532  Amaranthus blitoides M. S. Taylor; L. Ahart 1982-10-11 5159 Butte Graylodge Wildlife Refuge, on n side of loop road w of HQ, 12 mi sw of Gridley. 18 Comment
  CHSC38257  Amaranthus blitoides Vernon Oswald 1983-6-13 676 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  CHSC66429  Amaranthus blitoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7751 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the E side of Fish Camp, Riparian Sanctuary. 28 Comment
  JEPS103456  Amaranthus californicus Lowell Ahart 2002-10-17 9984 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC112628  Amaranthus palmeri Lowell Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  CHSC21175  Ambrosia psilostachya M. S. Taylor 1975-10-29 977 Butte Ca. 10 ft S of Humbug Rd, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  CHSC97722  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  SEINET194925  Amelanchier alnifolia A. A. Heller 1939-4-26 15383 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC142955  Amelanchier utahensis Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 miles north of the Lost Creek Dam 1005 Comment
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 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
  CDA5354  Ammi majus L. Ahart 2001-6-13 8814 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  UC725515  Amsinckia A. A. Heller 1939-4-1 15364 Butte field near Radio Station, e of Chico Comment
  CHSC61713  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 23 m w of Humboldt Rd. and 4 km e of Chico, .8 km n of Little Chico Creek. 99 Comment
  CHSC76935  Amsinckia intermedia Ida Ryan 1893-3-1 Butte Rancho Chico. Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  UC726393  Amsinckia lycopsoides A. A. Heller 1941-4-19 16069 Butte hills w of Willows Comment
  CHSC1388  Anagallis arvensis M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC30883  Anagallis arvensis J. D. Jokerst 1979-4-6 1177 Butte Top of North Table Mt, ca 200 m N of the intersection of Cherokee Rd and the east edge of the mountain 396 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC43179  Antennaria rosea subsp. confinis Robert Banchero 1981-6-28 538 Butte White Table Mountain summit. 1877 Comment
  UCD129052  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte near Durham. Comment
  CHSC20056  Anthriscus caucalis M. S. Taylor 1975-4-25 497 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  RSA769680  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte North side of gravel road, Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  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
  CHSC78166  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC84169  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2003-7-10 10370 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC90470  Aphanes occidentalis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC10549  Aphyllon purpureum Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC40280  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5047 Butte Along the edge of the dirt road, Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  RSA726810  Apocynum androsaemifolium L. Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at 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. 844 Comment
  CAS-BOT-BC392113  Aquilegia formosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC46183  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 232 Butte Near Pulga. 731 Comment
  UC1594658  Arabidopsis thaliana Vernon H. Oswald and Lowell Ahart 1992-4-8 4896 Butte Trail near abandoned railroad grade in Oroville Dam Recreation Area, on s side of Thermalito Diversion Pool, between spillway and Sycamore Hill Oroville Dam Recreation Area; , Thermalito Diversion Pool 76 Comment
  UC600706  Arabis glabra E. B. Copeland 1931-6-22 Butte Jonesville 1500 Comment
  CHSC115005  Arbutus menziesii Lowell Ahart 2015-3-14 19948 Butte South side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC407720  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  RSA325115  Arceuthobium campylopodum M. S. Taylor 1975-9-19 911 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  CHSC4574  Arceuthobium occidentale C. Glascock 1965-1-27 194 Butte Foothills 2 mi. e of Oroville on Oro-Quincy Hwy. ca. 30 ft. downhill from midpoint of driveway at 2723 Oro-Quincy Hwy., Oroville. 38 Comment
  CAS-BOT-BC24432  Arctostaphylos manzanita Lowell Ahart 1975-4-3 s.n. Butte Near Honcut. 76 Comment
  UCD52158  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51104 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52160  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51097 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38863  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile west of the Ten Mile House east of Chico in the digger pine belt. Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC41220  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2515 Butte Canyon of Rock Cr. between creek and Cohasset Hwy, NW of Cohasset on lower canyon slope. Comment
  UCD52107  Arctostaphylos manzanita subsp. roofii Roman Gankin; W. Robert Powell 1966-10-26 869 Butte Cohasset Ridge northeast of Chico. 548 Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  SD49843  Arctostaphylos mewukka A. E. Wieslander 1933-6-24 329 Butte Chico quadrangle, 1 mi. E of Paradise on Pearson Road 519 Comment
  UC725336  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte on Pentz-Magalia Rd 4 mi below Paradise Comment
  UC725752  Arctostaphylos mewukka A. A. Heller 1941-12-17 16337 Butte Neal Rd 3 mi below Paradise Comment
  UC725980  Arctostaphylos mewukka A. A. Heller 1942-1-18 16350 Butte Pentz-Magaia Rd one mi e Bille Road; Paradise Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  CHSC108844  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17751 Butte On the high bank, on the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air)northeast of Chico. 335 Comment
  JEPS120006  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  CAS-BOT-BC46716  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC46718  Arctostaphylos patula F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  SEINET10449338  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3424 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CAS-BOT-BC47376  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51094 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47378  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51098 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  JEPS98293  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC569953  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 mi s Wyandotte; Smartsville Quadrangle 152 Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  CHSC78059  Aristolochia californica Caleb E. Casey 1999-2-4 Butte Upper Bidwell Park, bluffs on south side over Bear Hole. 365 Comment
  SFV8401  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 244 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  CHSC105176  Arnica chamissonis B. Castro; L. P. Janeway 1999-8-1 1019 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
  RSA699514  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte West of Hwy. 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 488 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC94973  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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Mar 31 2009
  UC600722  Artemisia douglasiana H. F. Copeland 1927-9-3 1114 Butte Jonesville 1524 Comment
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS104737  Asarum hartwegii John L. Morrison 1940-5-19 3163 Butte 5.9 mi from Flea Valley; along Ponderosa Way 900 Comment
  JEPS108902  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  CDA14078  Asclepias speciosa G. F. Hrusa, T. D. Wilfred 1997-7-3 13961 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CHSC40471  Aster radulinus Lowell Ahart 1985-8-15 5166 Butte Along the north edge of Forbestown Road, about 2 miles northeast of Robinson Mill Road, about 2 miles southwest of Forbestown. 762 Comment
  CHSC46550  Aster radulinus Vernon H. Oswald 1989-7-18 3865 Butte West side of the road to Colby Mtn Lookout near the Butte-Tehama county line, ca. 0.5 mi (air) NW of Jonesville. 1554 Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CHSC90942  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  UC727126  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte n Oroville (treeless summit Table Mountain); n of Oroville, summit Table Mountain 304 Comment
  CHSC69041  Asyneuma prenanthoides Lowell Ahart 1997-8-1 7793 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. 1371 Comment
  SEINET10471814  Athyrium filix-femina var. californicum Lowell Ahart 1985-7-24 Ahart 5149 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  JEPS104162  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  CAS-BOT-BC172671  Atriplex lentiformis Lowell Ahart 1981-9-10 3144 Butte Gray Lodge, SW of Gridley 35 Comment
  CAS-BOT-BC176601  Atriplex serenana var. serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  JEPS90629  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  UC1490564  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte about 12 mi sw Gridley (just w of Pennington Road, n side of road near the entrance to the Gray Lodge Waterfowl Management Headquarters); Gray Lodge Waterfowl Management, sw of Gridley 35 Comment
  CHSC46435  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 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
  UCD129404  Baccharis glutinosa L. Ahart 1981-9-27 3215 Butte Palermo. 100 Comment
  CAS-BOT-BC16790  Barbarea verna Lowell Ahart 1980-5-19 2314 Butte Near bridge, South Fork of Feather River. 800 Comment
  CHSC107120  Bellis perennis L. P. Janeway 2011-6-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. 60 Comment
  CHSC3604  Bellis perennis Gerry Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  JEPS119501  Bellis perennis Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC24790  Berberis dictyota Keith Lickey 1976-3-11 44 Butte Jordan Hill Rd ca. 3 km wnw of Concow Rd ca. 12 m w of Concow Creek Bridge. 457 Comment
  CHSC45271  Bergia texana Vernon Oswald 1988-10-25 3712 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC27240  Betula populifolia P. Moyer 1972-3-18 150 Butte CSUC campus. L. S. courtyard. 60 Comment
  CHSC42992  Bidens cernua Lowell Ahart 1987-7-17 5824 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC30414  Bidens frondosa M. Merryman 1979-9-23 50 Butte SW of Chico, just E of Ord Ferry and Sacramento River. 30 Comment
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC92571  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC43098  Blennosperma nanum var. nanum Maralyn O'Meara 1974-4-20 302 Butte Table Mtn. 305 Comment
  CHSC28391  Boechera breweri J. D. Jokerst 1979-6-21 295 Butte N.W. slope of Humboldt Peak. 2072 Comment
  CAS-BOT-BC15943  Boechera breweri subsp. breweri Lowell Ahart 1980-8-2 2520 Butte Humboldt Peak. 2300 Comment
  UC726942  Boechera breweri subsp. shastaensis A. A. Heller 1920-3-28 13359 Butte Ten Mile House Comment
  CAS-BOT-BC14291  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  SEINET10453128  Boisduvalia densiflora Mary Susan Taylor 1975-6-25 Taylor 800 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 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
  CHSC6163  Brachypodium distachyon E. Parreno 1968-4-28 76 Butte NE of Covered Bridge, Chico. 60 Comment
  CHSC37451  Brassica nigra L. Ahart 1982-5-29 3449 Butte In a field, n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CAS-BOT-BC30307  Brassica nigra Lowell Ahart 1974-5-18 s.n. Butte About 3 miles north of Honcut. 150 Comment
  CAS-BOT-BC30309  Brassica nigra Lowell Ahart 1982-5-29 3449 Butte North of the Peter Ahart Ranch, about 2.5 miles north and 1.25 miles east of Honcut. 50 Comment
  CHSC10551  Briza maxima Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC81589  Briza maxima D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  SEINET10507327  Briza maxima Mary Susan Taylor 1980-5-24 Taylor 2745 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CHSC38763  Brodiaea californica var. californica Vernon Oswald 1983-6-2 610 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CHSC78756  Brodiaea coronaria subsp. coronaria L. P. Janeway 2000-5-14 6722 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  SEINET10472613  Brodiaea elegans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4146 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CHSC2417  Brodiaea minor R. Carter 1965-6-15 229 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. Along W side of road, North Table Mt., ca. 8 mi. N of Oroville. 335 Comment
  JEPS5507  Brodiaea minor W. L. Jepson 1934-5-4 16621 Butte 2.5 mi ne Cana Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  CAS-BOT-BC486480  Brodiaea sierrae John Thomas Howell 1955-6-14 30436 Butte Magalia 731 Comment
  CHSC68526  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte Peter Ahart Ranch, about 2 miles north and 1/10 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CAS-BOT-BC149544  Bromus carinatus var. carinatus John Thomas Howell 1951-6-26 27527 Butte Sierra Nevada. Near Pulga. 411 Comment
  CHSC88147  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  CHSC6668  Bromus diandrus Marilyn Lee 1968-3-15 109 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  JEPS115993  Bromus diandrus Lowell Ahart 2009-5-8 15667 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
  CAS-BOT-BC155462  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UCD58624  Bromus hordeaceus L. Y. Leonard 1919-6-16 X 3100 Butte Chico. U.S. Test Grounds. Comment
  CHSC88196  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1507 Comment
  CAS-BOT-BC162461  Bromus laevipes John Thomas Howell; Gordon H. True 1967-6-11 42565 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. 426 Comment
  CHSC6164  Bromus laevipes E. Parreno 1968-4-28 79 Butte Ridge ne side of Covered Bridge. 60 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  SEINET10524513  Bromus marginatus A. Arthur Heller 1917-7-26 Heller 12832 Butte Open places in the yellow pine forest. Butte Meadows, Douglas fir and incense cedar are also plentiful. Comment
  SEINET10507668  Bromus mollis Mary Susan Taylor 1980-5-27 Taylor 2643 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 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
  CHSC65610  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  UCD59252  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  JEPS100684  Bromus suksdorfii Dean W. Taylor 1995-8-6 15378 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1158 Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC161504  Bromus tectorum Lowell Ahart 1982-6-4 3531 Butte Sierra Nevada. Ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CHSC90468  Callitriche marginata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11666 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC43850  Callitriche stagnalis Vernon Oswald 1987-5-3 2364 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). In a pond. 48 Comment
  HSC32613  Callitriche trochlearis R. A. Vanbianchi 1974-4-20 229 Butte Table Mtn. 305 Comment
  CAS-BOT-BC80356  Calocedrus decurrens Lowell Ahart 1985-9-18 5168 Butte about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  CAS-BOT-BC487814  Calochortus coeruleus A. A. Heller 1928-6-20 s.n. Butte In the yellow forest at Butte Meadows Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  RSA724933  Calochortus tolmiei L. P. Janeway 2006-5-14 8598 Butte Northern High Sierra Nevada: just west of Jordan Hill Road, 0.9 km east of Sawmill Peak lookout 953 Comment
  CAS-BOT-BC494320  Calochortus tolmiei C. C., Mrs. Bruce 1897-6-1 2407 Butte Foush Ranch Comment
  SEINET12048539  Calochortus tolmiei Unknown 1984-1 9 Butte ca 1.8 mi S of Concow Reservoir & 0.2 mi S of Jordan Hill Rd, along W side of Concow Rd 457 Comment
  SD1664  Caltha howellii E. B. Copeland June 1930 Butte Jonesville; in meadows by North Willow Creek 1550 Comment
  CAS-BOT-BC273289  Calycadenia fremontii G. D. Carr 1971-6-15 561 Butte NE of Chico, 1.6 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), (ca. 4.3 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave) 210 Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  CHSC71459  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  JEPS94774  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte 1 1/2 air mi s of Hurleton (along Hurleton Swedes Flat Road about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CAS-BOT-BC311785  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA255507  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 miles W of Paradise, south side of Chico-Paradise Hwy Comment
  CHSC25342  Calycadenia spicata M. Hayes 1977-8-3 22 Butte Along Pentz Road 2.0 km east of Highway 99. 80 Comment
  CHSC30285  Calycadenia truncata M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2296 Butte S side of rd from Magalia serpentine down to Feather River, ca. 0.5 mi up from the river. 670 Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CAS-BOT-BC275378  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC90919  Calycanthus occidentalis Lowell Ahart 1983-6-26 4104 Butte About 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way. 500 Comment
  JEPS109588  Calystegia atriplicifolia subsp. buttensis Dean Wm. Taylor, Tom Engstrom 2002-7-3 18213 Butte logging road ca. 0.2 miles E of Highway 32, 1.9 miles South of Lomo (road 160G 0.6 miles South of Highway 32) 1158 Comment
  JEPS113304  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. Comment
  JEPS47865  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 10789 Butte near Stirling; near Stirling 1036 Comment
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  CHSC38399  Calystegia occidentalis Vernon Oswald 1983-5-21 513 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC94025  Calystegia occidentalis subsp. occidentalis R. D. Fischer 2005-4-30 735 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants on a west facing, brushy hillside trail. 518 Comment
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  UC426977  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  CHSC11055  Capsella bursa-pastoris Lowell Ahart 1970-2-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119515  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte About 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. Comment
  CHSC3653  Cardamine californica Robert D. Briggs 1966-3-16 R- 72 Butte 8 miles due north of Downtown Chico. Comment
  UCD114500  Cardamine californica R. E. Preston 1981-2-28 45 Butte 50 m east of Coutelenc Road, 300 m north of its junction with The Skyway, Magalia. 700 Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  CAS-BOT-BC37874  Cardamine oligosperma Peter H. Raven 1954-4-17 6614 Butte Along Feather River, Oroville. Comment
  CAS-BOT-BC37875  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  CHSC70788  Cardamine pachystigma B. Castro 1995-5-9 566 Butte Ca 10 air mi E of Oroville, across Forbestown Road from jcn with road up to Sunset Hill Lookout. within 15 ft of S edge of Forbestown Rd. 990 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  JEPS117697  Carex Lowell Ahart 2010-9-21 17204 Butte 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 Philbrook Reservoir 1917 Comment
  JEPS118072  Carex Lowell Ahart 2011-7-9 17574 Butte Southeast edge of a large open bare granite area, about 3/8 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  JEPS122028  Carex Lowell Ahart 2014-7-2 19537 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. Comment
  CAS-BOT-BC18212  Carex Lowell Ahart 1985-6-30 5078 Butte East of the dirt road to the Forbestown Res., about 2.5 miles northeast of Forbestown. 868 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS110197  Carex angustata Lowell Ahart 2006-7-16 12974 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC102721  Carex barbarae Lowell Ahart 2009-6-3 15825 Butte Meadow about 15 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. 254 Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC52269  Carex bolanderi L. P. Janeway 1987-5-20 2086 Butte Canyon of North Fork Feather River; seep along Hwy 70, 0.3 mi N of Arch Rock Tunnel. 472 Comment
  CHSC52271  Carex bolanderi L. P. Janeway 1988-5-29 2676 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  CHSC94398  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  UCD140199  Carex brainerdii L. P. Janeway 1988-6-14 2785 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  JEPS113274  Carex cyrtostachya Lowell Ahart 2007-5-22 13912 Butte Along a small wash, on the northwest edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville 1009 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  SD257095  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River and the County Road; Ca. 4.0 air miles northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC34951  Carex densa Lowell Ahart 1980-5-12 2249 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3450851  Carex densa Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Ohio 120 Comment
  JEPS109982  Carex disperma Dean W. Taylor 2006-8-1 s. n. Butte 200 ft E of Keyser Creek 1554 Comment
  CDA42884  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  CHSC86549  Carex fracta L. P. Janeway; John Hunt 2003-7-1 7864 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 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
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  CAS-BOT-BC28190  Carex hirtissima Lowell Ahart 1982-5-8 3425 Butte 1/10 mi N of the intersection of Lower Forbestown Road and Ponderosa Way, 700 Comment
  RSA0037178  Carex hoodii Lowell A. Ahart 2010-9-21 17201 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC35710  Carex integra J. D. Jokerst; R. A. Schlising 1982-5-19 1579 Butte Open disturbed grassy area N of and adjacent to Fall River at the Fall River Campground. 1005 Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville 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
  CHSC47059  Carex lemmonii L. P. Janeway 1989-5-19 3261 Butte Seep along Jordan Hill Rd 8.0 mi N of Concow Rd. 929 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  UCD140476  Carex lemmonii L. P. Janeway 1987-5-28 2109 Butte along side road (23N12Y) of Four Trees Road, 1.6 miles west of its junction with OroQuincy hwy. 1463 Comment
  CHSC102814  Carex leptopoda Lowell Ahart 2009-6-3 15828 Butte About 55 yards southeast of the gate, about 45 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
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  CAS-BOT-BC32162  Carex multicaulis Lloyd W. Swift 1934-5-8 106 Butte S Challenge 914 Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 Comment
  SEINET10971821  Carex multicaulis Mary Susan Taylor 1981-5-13 Taylor 3696 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 Comment
  SEINET11182689 Image available Carex nervina Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10518 Butte ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir 1695 Comment
  CAS-BOT-BC119565  Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the N Fork of the Feather River, near the Poe Power House, 271 Comment
  UC182750  Carex nudata A. A. Heller 1913-6-7 10818 Butte near Stirling (West Branch of the North Fork of the Feather River) 914 Comment
  CAS-BOT-BC94041  Carex pendula Peter F. Zika 2010-5-16 24824 Butte shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Ave. and Lone Pine Ave., SW of Chico 45 Comment
  CAS-BOT-BC118352  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Creek and the jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC44949  Carex simulata L. P. Janeway 1987-6-19 2250 Butte Mdw on Pinkard Cr, between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  CAS-BOT-BC116733  Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC52874  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3082 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  JEPS110204  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC47131  Carex vesicaria L. P. Janeway 1987-6-27 2347 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CHSC59009  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1562479  Carex vulpinoidea Vernon Oswald and Lowell Ahart 1990-5-26 4254 Butte s Oroville (Pacific Heights Rd. entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  CHSC44113  Carex whitneyi L. P. Janeway; R. A. Schlising 1988-7-16 3022 Butte Near Willow Cr ca 1 mi W of Humbug Rd. 1798 Comment
  CDA13904  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC47141  Carex xerophila B. Castro; Gail Kuenster 1989-4-29 307 Butte Ca 0.1 mi N of jct Coutolenc Rd and Skyway; on flat ledge between Coutolenc Rd and old SPRR bed. 707 Comment
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 Comment
  UCR261236  Carex xerophila Peter F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Range, northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  JEPS124226  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  JEPS86449  Castilleja affinis subsp. affinis L. R. Heckard 1973-6-9 3426 Butte ca 5 mi e Oroville (Olive Hwy ca 0.4 mi from junction with Forbestown Rd) 365 Comment
  JEPS18862  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5602 Butte 0.3 mi n and below Nelson Bar road junction with the Pentz-Magalia road (along Nelson Bar road, 1.5 mi s and above bridge across West Branch of Feather River, on the n side of the canyon) 304 Comment
  CHSC25364  Castilleja applegatei subsp. pinetorum Marc P. Hayes 1977-3-20 1 Butte Ca. 2.6 km nw of Jarbo Gap, 4.1 km ssw of Pulga, 10 m on n side of Hwy 70. 650 Comment
  POM193340  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville. 1550 Comment
  SEINET10549341  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-6-19 Taylor 3957 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  SBBG128457  Castilleja attenuata L. Ahart 2012-4-17 17875 Butte ca. 100 yards S of where the rd turns N, ca. 0.5 mi W of Pacific Heights Rd, Oroville Wildlife Area, ca. 5 mi SW of Oroville 35 Comment
  JEPS4547  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (s of the Y, field on U.S. Hwy 99E) Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  HSC43086  Castilleja exserta subsp. exserta Maralyn O'Meara 1974-4-20 293 Butte Table Mtn. 305 Comment
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC886502  Castilleja lacera A. A. Heller 1915-5-28 11904 Butte near Cohasset (Sierra foothills); Sierra Comment
  UCD122598  Castilleja lacera W. R. Powell 1968-5-16 1503 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 Comment
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  CAS-BOT-BC48543  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte West Branch of the North Fork of the Feather river near Stirling 914 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  HSC59635  Ceanothus cuneatus J. P. Smith 1973-3-22 5933 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET13945813 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  SEINET13945814 Image available Ceanothus cuneatus T. A. Ranker, P. G. Trapp 1994-1 1618 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  JEPS113416  Ceanothus diversifolius Lowell Ahart, Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  CHSC39784  Ceanothus integerrimus Eloise Gallatin 1935-5-2 Butte Paradise. Comment
  RSA755641  Ceanothus integerrimus L. Ahart 2009-5-15 15693 A Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 Comment
  POM305568  Ceanothus integerrimus var. puberulus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 852 Butte Feather River Hwy. Comment
  CHSC4641  Ceanothus lemmonii R. Carter 1966-4-26 362 Butte Found ca. 10 mi. NE of Oroville along W side USFS road 21N40 to Bloomer Mt., growing along rocky roadside 1.4 mi. W from intersection with Oroville-Quincy Rd. 731 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  POM136667  Ceanothus ramulosus A. A. Heller 1902-5-7 s.n. Butte Berry Canyon (Near Clear Creek). Comment
  UC1071489  Ceanothus velutinus P. L. Johannsen 1936-7-21 960 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  JEPS87515 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC102714  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC295  Centaurea solstitialis E. Walker 1932-6-21 Butte Durham. Comment
  JEPS124193  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 -A Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC50401  Centaurea stoebe subsp. micranthos Vernon Oswald 1990-6-27 4335 Butte Hwy 149 at Gold Run Creek, between Oroville Y on Hwy 99 and Wicks Corner on Hwy 70. Edge of road. 71 Comment
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC62110  Centaurium tenuiflorum L. P. Janeway 1993-7-2 4424 A Butte Plumas National Forest. Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swaybe Hill to Big Bar Mtn). 926 Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  CAS-BOT-BC288532  Centromadia fitchii J. Clausen 1932-9-16 657 Butte 20 miles S of Chico, between Richvale and Nelson Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  CHSC72248  Centromadia fitchii Lowell Ahart 1998-9-11 8060 Butte Along a wash, about 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  SBBG19383  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CHSC68909  Cephalanthera austiniae Lowell Ahart 1997-7-11 7747 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
  SEINET10971587  Cephalanthera austiniae Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4709 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC222897  Cephalanthus occidentalis Lowell Ahart 1987-7-17 5828 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC69716  Cerastium fontanum subsp. vulgare Lowell Ahart 1997-10-20 7920 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  SEINET11908937  Cercocarpus betuloides Unknown 1975-1 21 Butte ca 2 mi W of Cohassett, 10 yds S of Cohasset Highway 457 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CAS-BOT-BC137002  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC1541  Cercocarpus betuloides var. betuloides M. Roberson 1956-5-14 Butte SW Paradise, along Skway. 426 Comment
  SD5738  Chaenactis douglasii E. B. Copeland 1931-7-6 Butte Jonesville 1900 Comment
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  SEINET10483789  Chamaebatia foliolosa Mary Susan Taylor 1976-3-6 Taylor 1010 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CDA38811  Chamaesyce maculata L. Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CDA42979  Chamaesyce maculata L. Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC76416  Chamaesyce maculata Lowell Ahart 1999-10-28 8309 Butte On the west side of a large pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles (air) southwest of Chico. 32 Comment
  CHSC97130  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC72250  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  CHSC47423  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1974-8-14 603 Butte Along 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
  CHSC51261  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  JEPS115729  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  SEINET10943542  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 Ahart 16285 Butte T17N, R4E, southeast 1/4 Section 4. Normal size plant, a broken stem produced a small drop of white sap, about 200 stem drops make up the sample, on dry gravelly soil, in a large wash, Peter Ahart Ranch, about 1 1/2 miles south of Oroville. Valley Grassland. 34 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  JEPS113223  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 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 Bi 585 Comment
  SEINET10529915  Cheilanthes gracillima Mary Susan Taylor 1983-1-17 Taylor 5214 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC39501  Cheilanthes intertexta Lowell Ahart 1983-5-28 4042 Butte About 1/4 mile south of the over-lood to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  SEINET10529920  Cheilanthes intertexta Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5517 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  SEINET10872452  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4999 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10479018  Chenopodium botrys Mary Susan Taylor 1979-10-5 Taylor 2226 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
  CHSC100478  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  CAS-BOT-BC451486  Chimaphila umbellata Kate E. Conger 1907-1-1 18 Butte Brush Creek Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  CHSC30089  Chlorogalum pomeridianum M. S. Taylor 1980-7-5 3053 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  RSA0036433  Chorizanthe membranacea Lowell A. Ahart 2012-5-12 18038 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7.5 miles (air) northeast of Chico. 414 Comment
  SJSU9096  Chorizanthe polygonoides C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  UCD99935  Chorizanthe stellulata Glen Holstein 1980-5-4 103 Butte ca. 4 miles southwest of town of Paradise, immediately north of Skyway Road above junction of Butte and Little Butte Creeks. 396 Comment
  CHSC46802  Chrysolepis sempervirens R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4653 Butte 4.1 miles N of Inskip along Skyway/Humbug Road, at junction with Bull Hill Road to Butte Meadows. 1566 Comment
  SEINET10475251  Chrysopsis oregona var. compacta Mary Susan Taylor 1979-10-2 Taylor 2210 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC39935  Cicendia quadrangularis M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5398 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC31622  Cichorium intybus L. Ahart 1977-7-4 1466 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC8133  Cichorium intybus Dave Isle 1969-5-20 491 Butte From a healthy population located on the corner of 11th Ave. and Shoshone Ave, Chico, California. 59 Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC42911  Cicuta douglasii Lowell Ahart 1987-7-17 5838 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south- east of Jarbo Gap. 274 Comment
  CAS-BOT-BC184836  Cinna latifolia Lowell Ahart 1983-8-16 4287 Butte Sierra Nevada. One mile east of Butte Meadows. Along a small stream that flows into Butte Creek. 1450 Comment
  CHSC40774  Circaea alpina subsp. pacifica Lowell Ahart 1985-7-9 5116 Butte Along 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-east of Feather Falls. 914 Comment
  SEINET10453138  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-19 Taylor 1741 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  SEINET10474562  Cirsium pastoris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4242 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC37273  Cirsium vulgare L. Ahart 1982-8-10 3739 Butte Around rice field, Peter Ahart Ranch, ca. 2 1/2 mi n and 1/2 mi e of Honcut. 50 Comment
  SEINET7073612  Clarkia affinis A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC71184  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CAS-BOT-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
  CHSC89904  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  UCD104329  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC35133  Clarkia concinna subsp. concinna R. A. Schlising 1980-5-23 3593 Butte N of Lake Oroville, along Nelson Bar Road, 2.3 mi w of Highway 70, via Lunt Road. Comment
  CHSC84704  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7804 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.4 km southwest of mouth of Bean Creek. 283 Comment
  CAS-BOT-BC164520  Clarkia gracilis subsp. albicaulis Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC31884  Clarkia gracilis subsp. gracilis L. Ahart 1979-4-28 1848 Butte On a dredger pile near edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC84858  Clarkia gracilis subsp. gracilis L. P. Janeway 2003-5-24 7795 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. Road cut. 82 Comment
  UC1795594  Clarkia mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte on USFS N60 approximately immed. E of bridge over Marble Creek 1150 Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC73801  Clarkia mildrediae subsp. lutescens Ann Willyard 1997-7-16 Butte Ca 1.5 air mi S of Deer Park site on Rock Island Ridge, at E edge of USFS Rd 23N60 as it parallels Marble Creek, ca 0.5 air mi NE of its confluence with Little North Fork Feather River. On SW-facing roadcut ca 0.2 mi N of hairpin curve in road. 1143 Comment
  CHSC1104  Clarkia mildrediae subsp. mildrediae V. Holt 1935-5-28 Butte Butte Creek. 243 Comment
  CHSC70733  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4665 Butte Northwest side of canyon of North Fork Feather River, +/- overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Road cutbank. 670 Comment
  CHSC35143  Clarkia purpurea subsp. quadrivulnera George Kingston 1980-4-23 20 Butte N of Chico, at jct. Hwy. 99 and Broyles Road. 60 Comment
  CHSC42364  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC172379  Clarkia purpurea subsp. viminea L. P. Janeway 1993-6-23 4400 Butte North side of French Creek, 0.5 mi west of mouth of Ram Creek, north side of Rd. 22N34, Plumas National Forest, Oroville Ranger District, Swayne Hill Compartment (non-Forest land) 615 Comment
  CHSC70743  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC70760  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of West Branch Feather River. 1402 Comment
  SD122550  Clarkia rhomboidea Lowell Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown; Yellow Pine Forest, 370 Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  SEINET10453167  Clarkia rhomboidea Mary Susan Taylor 1981-5-21 Taylor 3790 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  UCD104980  Clarkia rhomboidea L. Ahart 1983-6-26 4118 Butte About 15 miles NE of Oroville, about 2 miles SE of intersection of the Oroville/Quincy Highway and Ponderosa Way. 500 Comment
  CHSC38568  Clarkia unguiculata Vernon Oswald 1983-5-21 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft w of the power lines. 213 Comment
  CHSC43940  Clarkia unguiculata Vernon Oswald 1988-4-28 3287 Butte Oroville Wildlife Area, 1.8 mi s of the intrance on Hwy 162. 39 Comment
  CAS-BOT-BC439111  Claytonia exigua subsp. exigua Ahart; Jokerst 1985-3-24 4859 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC50556  Claytonia lanceolata Vernon Oswald; Lowell Ahart 1990-6-20 4306 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1920 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC38629  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-3-26 208 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 286 Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  SEINET10572719  Claytonia perfoliata var. perfoliata Mary Susan Taylor 1981-5-28 Taylor 3807 A Butte Street weed in shaded moist areas in Chico. 61 Comment
  SEINET10572737  Claytonia rubra Mary Susan Taylor 1982-6-24 Taylor 4741 A Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC91351  Clematis lasiantha Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 48 Butte About 5 miles south of Paradise on Pentz Road, at intersection with Kuncle Reservoir Road. Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CHSC42168  Collinsia sparsiflora Julie L. Brown 1986-4-1 Butte Ca. 1.6 km e of Chico on gravel road on the Brown Ranch adjacent to Upper Bidwell Park. 100 Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC1586405  Collinsia sparsiflora var. collina Lowell Ahart 1991-8-8 6643 Butte On a steep slopoe on the W side of north Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles N and 2 annd 3/4 miles E of Honcut, about 12 miles SE of Oroville. Foothill Woodland. 45 Comment
  CHSC44727  Collinsia tinctoria R. Banchero 1980-6-5 194 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  CHSC42553  Collomia heterophylla Lowell Ahart 1987-5-22 5661 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SD3881  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville, Butte County 1500 Comment
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10549249  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1983-8-16 Ahart 4279 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET12331907  Cordylanthus pilosus subsp. bolanderi Unknown 1985-1 5153 Butte along Forbestown Ditch, about 2.5 mi NE of Forbestown 869 Comment
  CHSC47491  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1977-7-8 1447 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  HSC97156  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte 0.5 mi. N of Cherokee Rd., N Table Mtn., about 7 mi. (air) N of Oroville 320 Comment
  RSA505434  Cordylanthus tenuis subsp. viscidus R. C. Bacigalupi, Howard Whisler 1957-7-26 6038 Butte On the Humbug Road, 2.2 miles southwest of and below Nimshew, on the eastern canyon side of Butte Creek. 61 Comment
  RSA7124  Coreopsis stillmanii C. B. Wolf 1933-5-19 4823 Butte 10 miles above Raymond on road to Coarse Gold. Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  POM193363  Cornus californica E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  RSA755441  Cornus glabrata L. Ahart 2009-5-23 15733 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  RSA104167  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Not noted Comment
  CAS-BOT-BC401854  Corydalis caseana subsp. caseana Mrs. C. C. Bruce 1897-7-1 1192 Butte Butte Creek Comment
  UC1562845  Cotula coronopifolia Barbara Ertter with Lowell Ahart 1986-4-13 5903 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CHSC78141  Crassula aquatica Lowell Ahart 2000-5-21 8379 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
  CHSC31653  Crassula connata L. Ahart 1973-3-16 177 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65448  Crassula connata Vernon Oswald 1989-3-30 3729 Butte Upper Bidwell Park, Chico. Slightly nw of the North Rim Trail along an intermittent streamlet draining into Sycamore Creek. 274 Comment
  JEPS107325  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 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
  JEPS107416  Crassula tillaea Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. About 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  RSA0118771  Crassula tillaea Lowell A. Ahart 2013-4-20 18559 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  CHSC91472  Croton setiger Lowell Ahart 2005-7-13 12153 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC46403  Crucianella angustifolia Lowell Ahart 1989-5-23 6252 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CDA6676  Crucianella angustifolia L. L. Heinrichs 1973-5-31 Butte New overlook at Lake Oroville, Oroville. 0 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 Comment
  CHSC115369  Crypsis schoenoides Lowell Ahart 2015-4-24 20077 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  SD122567  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 4708 Butte Ca. 2 miles southwest of Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  SD122568  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte At the Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  UC79434  Cryptantha flaccida Mrs. R. M. Austin Jun 1883 Butte Little Chico Comment
  RSA718310  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 355 Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  UCD119835  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte along the dirt road near the water tower, above the generator, 1 mile east of Ponderosa Dam, 2 miles north of Forbestown. 475 Comment
  CHSC39028  Cryptantha rostellata Lowell Ahart 1984-5-18 4606 Butte Peter Ahart Ranch, about 1.25 mi e of Honcut and 12 mi s of Oroville. 50 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CHSC69104  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SEINET10529783  Cryptogramma crispa subsp. acrostichoides Mary Susan Taylor 1979-7-21 Taylor 2151 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  UCD133542  Cupressus macnabiana B. F. Smith 1970-10-9 99 Butte 3.3 miles north of Jarbo Gap, Lassen National Forest. 883 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  JEPS121891  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  JEPS120791  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile SE of the Honcut Cemetery, about 3 1/4 air miles NE of Honcut. Comment
  CHSC26650  Cuscuta pentagona M. S. Taylor 1977-11-10 1508 Butte N side of Crouch Rd, at jct of Crouch and Lone Pine Aves., ca 4 mi s of Chico. 45 Comment
  JEPS116005  Cynodon dactylon Lowell 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 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  UC480689  Cynoglossum grande H. F. Copeland 1923-2-24 107 Butte Ferny Way near Chico Comment
  CHSC101170  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east 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. 271 Comment
  CHSC116210  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  SEINET10502764  Cyperus Lowell Ahart 1984-9-24 Ahart 4810 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  UC980096  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station Comment
  CHSC68379  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-9-14 1860 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  JEPS110535  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  JEPS94723  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 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
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC68389  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1884 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  CAS-BOT-BC114272  Cyperus esculentus A. A. Heller 1939-8-26 15480 Butte Wet ground in a field opposite the sewer farm on the River Road west of Chico. Comment
  POM219532  Cyperus esculentus H. F. Copeland 1923-8-13 550 Butte Nelson. Comment
  UCD19359  Cyperus flavicomus E. Dean; with J. Ditomaso and E. Healy 2001-8-20 850 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. South side of Hamilton Road, W of jct with Riceton Hwy, W side of RR tracks. Along dirt road that is the extension of Hamilton Rd. 30 Comment
  CHSC109779  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS104601  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West of a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ordbend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC111614  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Common. Agricultural. 31 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CAS-BOT-BC114081  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC68418  Cyperus strigosus L. P. Janeway 1986-10-19 1933 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC71404  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC68047  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  RSA739871  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada, along Four Tree Road at crossing of S Branch Mill Creek, 4.5 road km ESE of Hwy 70. 823 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  UC399284  Cystopteris fragilis Mrs. Carlotta C. Hall July 1914 9791 Butte Humboldt Rd Comment
  CAS-BOT-BC68049  Cystopteris fragilis Lowell Ahart 1981-3-29 2713 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  CHSC6752  Dactylis glomerata Marilyn Lee 1968-5-3 64 Butte Intersection of Skyway and Coutolene Rd., 2 miles S. of DeSalbia. Comment
  UC1100156  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte 15 mi. w. Oroville; Sacramento Valley Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  CHSC41919  Danthonia californica var. americana Lowell Ahart 1983-8-16 4291 Butte Near a bog, near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, 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
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  LA212402  Daucus pusillus Jim R. Shevock; 1972-5-19 1768 Butte N. of Lake Orvoville, Hwy. 70. 91 Comment
  SEINET10536233  Delphinium Mary Susan Taylor 1981-5-5 Taylor 3608 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CAS-BOT-BC121513  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CHSC104825  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico. 188 Comment
  CHSC56872  Delphinium nudicaule K. O'Connor-Henry 1985-3-8 3 Butte North Table Mtn., e of Cherokee Rd. and 3 mi. n of Oroville. 329 Comment
  SD1703  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville; common in the brush and open woods 1550 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC121619  Delphinium patens subsp. patens Mrs. C. C. Bruce 1897-4-1 1914 Butte Forest Ranch Comment
  CAS-BOT-BC121625  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte South side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 39 Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  RSA0110256  Delphinium variegatum Wm B Meiggs, W. Smith 1957-4-15 s.n. Butte 1/2 mile N of fire control road from Fine Gold Creek gaging station 244 Comment
  SEINET12099655  Delphinium variegatum Unknown 5 s.n. Butte no further locality Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  POM150565  Delphinium variegatum subsp. variegatum A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek). Comment
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  POM149405  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SEINET10841534  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-4-14 Taylor 3534 Butte T22N R4E east central third of sec 12, Pulga SW quad. Serpentine ridge on W side of Ponderosa Way (Rim Rd), ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  CHSC90999  Deschampsia danthonioides Lowell Ahart 2005-5-2 11768 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
  SEINET10524223  Deschampsia danthonioides A. Arthur Heller 1914-4-17 Heller 11301 Butte Hills 8 miles north of Oroville. Comment
  CHSC61655  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte Along Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SBBG119798  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  UCD63483  Deschampsia elongata L. E. Hazeltine 1916-6-10 Butte Chico. Comment
  SEINET10933470  Deschampsia elongata A. Arthur Heller 1917-7-26 Heller 12846 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CHSC70889  Dicentra uniflora Vernon Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi northeast of Hwy. 32. Slope looking down into Big Chico Creek Canyon. 1381 Comment
  SEINET10934920  Dichanthelium lanuginosum Mary Susan Taylor 1979-6-12 Taylor 2295 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC30355  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1979-2-23 1134 Butte Top of North Table Mt., W edge of Mountain adjacent to the waterfall at the S branch of Coal Cr. Comment
  CHSC82601  Dichelostemma capitatum subsp. capitatum Tara Morgan 2002-4-23 26 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail to the left split. 395 Comment
  CHSC4083  Dichelostemma multiflorum J. E. Bowlin 1967-4-21 27 Butte Ca. 3 feet n of Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  RSA21181  Dichelostemma multiflorum Carl B. Wolf 1937-6-12 8781 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  SEINET10472709  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2573 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS103329  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  JEPS95081  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  RSA126966  Digitaria sanguinalis H. S. Yates 1936-8-14 6118 Butte 10 miles S. of Durham 30 Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC104804  Diospyros virginiana Lowell Ahart 2010-6-12 16804 Butte North side of the pond, southeast of table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  UC1953464  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  CHSC44763  Diplacus grandiflorus R. Banchero 1980-6-2 175 Butte Along Hwy 32 ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of its jct with Forest Ranch Rd. 609 Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CAS-BOT-BC153216  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte About the Clear Creek-Paradise grade Comment
  CHSC1762  Diplacus kelloggii R. Carter 1964-3-23 54 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 25 yds. E of road along rim of table. 60 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CAS-BOT-BC153335  Diplacus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills 487 Comment
  CHSC44730  Diplacus torreyi R. Banchero 1980-6-16 233 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy32. 1292 Comment
  CHSC63667  Diplacus torreyi B. Castro; R. Zabell 1989-6-8 314 Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd. By old logging road in vicinity of meandering creeks. 1005 Comment
  SEINET223339  Diplacus tricolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-1 3312 Butte Peter Ahart Ranch, ca 2-1/2 mi N-NE of Honcut between Marysville & Oroville 30 Comment
  CAS-BOT-BC151465  Diplacus tricolor A. A. Heller 1940-5-13 15614 Butte Field 3 miles west of Chico, along State Highway #32 Comment
  CHSC45269  Dipsacus fullonum Vernon Oswald 1987-7-21 3142 Butte Between the Midway and the Southern Pacific RR, 0.6 mi s of Nelson. 36 Comment
  CDA35059  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley; Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. Comment
  HSC102776  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley; South end of Chico, along west side of Hwy. 99; 0.6 km south of Skyway/East Park Ave., and 0.3 km south of Comanche Creek 66 Comment
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC114964  Dodecatheon hendersonii Lowell Ahart 2015-3-14 19947 Butte On the south side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC1396  Dodecatheon hendersonii R. M. Staley 1953-8-6 Butte Rush Creek. Comment
  CHSC24977  Dodecatheon hendersonii J. Cox 1976-3-10 41 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., along w edge of Mt., 4.3 mi ne of Oroville. 426 Comment
  CHSC67293  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1955 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  UC1206623  Downingia bicornuta var. bicornuta Carl B. Wolf 1937-5-14 8673 Butte 5 mi nw Chico (on Hamilton City road); Sacramento Valley Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  CHSC4645  Downingia cuspidata R. Carter 1966-4-21 348 Butte Found ca. 5 mi. NE of Oroville on top Table Mt., growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. in dry vernal pool. 274 Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  CHSC183  Downingia ornatissima H. Summers 1929-4-17 Butte Rifle Range near Chico Creek canyon. 91 Comment
  UCD115553  Draba verna L. Ahart 1973-11-21 149 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile N and 2.5 miles E of Honcut, about 12 miles S of Oroville. 39 Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  SFV2953  Draperia systyla I. L. Wiggins, D. B. Wiggins 1961-6-10 16314 Butte Sierra Nevada Southeast-facing, rocky slope in Feather River Canyon near P. G. & E. Rock Creek Reservoir. Comment
  CHSC38070  Drosera rotundifolia R. E. Preston 1982-6-25 318 Butte Ca. 1.2 mi S of Inskip. ... Field redacted by CHSC, contact the data manager for more information 1420 Comment
  UC600378  Drymocallis hansenii E. B. Copeland 1929-7-25 Butte Jonesville 1550 Comment
  CAS-BOT-BC70857  Dryopteris arguta Lowell Ahart 1980-9-10 2632 Butte 1 mile northeast of Milsap Bar 900 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  UCD136405  Dryopteris arguta M. S. Taylor 1980-3-8 2376 Butte Pulga community, ca. 1 mile NE of Hwy 70, ca. 28 mi. NE of Oroville. 487 Comment
  CHSC30036  Dudleya cymosa L. Ahart 1980-5-25 2319 Butte About 1 mile e of the Bangor-Oroville Hwy, along Swedes Flat Rd, near Bangor. 320 Comment
  CHSC102821  Dysphania botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  SEINET3928604  Echinochloa muricata Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles S of Oroville.; 0 50 Comment
  CHSC116008  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte Hamilton road, about 1/4 miles east of Riceton Highway. Rice field on the north side of Hamilton road, about 1/4 miles (air) north of Biggs. 30 Comment
  JEPS113683  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  JEPS98285  Eleocharis acicularis Lowell Ahart 2000-5-11 8338 Butte 12 air miles SE of Oroville (along a small wash, 100 yds S of a dirt road, Peter Ahart Ranch, 1 1/2 mi N and 1 1/2 mi E of Honcut) 45 Comment
  CHSC45129  Eleocharis bella Vernon Oswald 1987-8-10 3203 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  JEPS105633  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  CHSC31942  Eleocharis macrostachya J. D. Jokerst; M. S. Taylor, R. Schlising 1979-5-18 718 Butte Top of Cohasset Ridge on slopes facing Mud Cr. 243 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC39338  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road insteaad of Ponderosa Way. 550 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC78290  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte Small seep 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. 1036 Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  JEPS98355  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte 5 air miles NE of Feather Falls (just W of the bridge across Fall River, N side of Fall River, 3 mi N of Lumpkin Ridge Road) 1036 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  CHSC38907  Eleocharis parishii Vernon Oswald 1983-4-9 299 Butte Upper Bidwell Park, Chico, on the north slope ca. 800 ft w of the power lines and 1000 ft n of Upper Park Rd. 115 Comment
  JEPS95995  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  SEINET7587014 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-23 8386 Butte About 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 55 Comment
  CHSC29845  Elodea canadensis K. R. Stern 1980-6-19 6661 Butte In Gold Run Creek, SE of Shippee Rd. 68 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
  CAS-BOT-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC42951  Elymus trachycaulus subsp. subsecundus Lowell Ahart 1987-7-3 5789 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
  CHSC97291  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson. 29 Comment
  UCR219089  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15582 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UCR219102  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15602 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  SDSU8897  Epilobium canum subsp. canum D. F. Howe 1960-9-20 2982 Butte North fork of Feather River Canyon. 152 Comment
  CHSC38570  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-14 679 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. On seeps both n and s of the road. 134 Comment
  UCD105782  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-19 s.n. Butte Chico. Comment
  CHSC58931  Epilobium ciliatum subsp. glandulosum Lowell Ahart 1992-7-26 6853 Butte In a meadow along a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  RSA0074183  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-11 13287 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
  CHSC35105  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 21 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  CHSC32842  Epilobium minutum William Askea 1981-4-22 13 Butte Ca. 100 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 730 Comment
  CHSC48633  Epilobium minutum Vernon Oswald 1987-4-20 2333 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. 85 Comment
  SEINET10453180  Epilobium minutum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4712 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 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
  JEPS119904  Epilobium torreyi Lowell Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  UC873167  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville (in a field below the Quercus Douglasii belt) Comment
  CHSC38234  Equisetum arvense Vernon Oswald 1983-6-2 602 Butte Upper Bidwell Park, Chico, near the east boundary of the park. 207 Comment
  CHSC63794  Equisetum arvense S. C. Morey 1983-8-1 664 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  SEINET3070848 Image available Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville 1300 Comment
  RSA331946  Equisetum hyemale var. affine Dave Kelly, Walter Wisura 1985-8-1 4089 Butte 8.1 mi NE of Lomo (Hwy 32) along Humboldt Road to Jonesville. Comment
  SEINET10899891  Equisetum hyemale var. affine Mary Susan Taylor 1978-7-19 Taylor 1731 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC33694  Equisetum laevigatum L. Ahart 1981-4-9 2752 Butte Near the edge of North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  JEPS113672  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 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
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  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
  JEPS95983  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 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
  SEINET10873979  Eremocarpus setiger Mary Susan Taylor 1977-6-25 Taylor 1372 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC93078  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  CHSC11844  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville. 1550 Comment
  UC1609003  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CHSC116149  Erigeron canadensis Lowell Ahart 2015-11-7 20614 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CHSC28608  Erigeron canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  JEPS120523  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Comment
  RSA4149  Erigeron lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville 2000 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  CHSC88082  Erigeron philadelphicus R. D. Fischer 2004-4-9 167 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on e. side of Big Chico Creek at Diversion Dam. 121 Comment
  CHSC26624  Erigeron sumatrensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC115281  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC23446  Eriogonum luteolum var. luteolum K. R. Stern 1974-6-30 5769 Butte Serpentine outcrop, Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  UC426904  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte along Butte Creek Jonesville, Butte Creek 1500 Comment
  CAS-BOT-BC269847  Eriogonum nudum var. pubiflorum John Thomas Howell 1976-7-14 51814 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  CHSC40784  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CHSC58941  Eriogonum umbellatum var. nevadense Lowell Ahart 1992-7-29 6868 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  UCD101504  Eriogonum umbellatum var. torreyanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  UC426903  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville 2050 Comment
  UC849667  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte along Feather River Highway 23 mi from Oroville Comment
  CAS-BOT-BC262215  Eriogonum ursinum Lowell Ahart 1987-5-27 5717 Butte Along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 365 Comment
  CHSC28533  Eriogonum wrightii var. trachygonum M. S. Taylor 1979-11-15 2286 Butte In rocky tailings, North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  SFV3893  Eriophyllum lanatum B. Fuller 1962-5-5 s. n. Butte Sierra Nevada Paradise. At the intersection of Harrison and Stearns Roads. Beside road on rocky slope. 535 Comment
  CAS-BOT-BC308150  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1899-4-1 s.n. Butte Chico 152 Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC31392  Erodium botrys J. D. Jokerst 1979-4-20 1204 Butte Top of North Table Mt., ca. 200 met N of Cherokee Rd at the E edge of the Mountain. 403 Comment
  JEPS115597  Erodium cicutarium Lowell Ahart 2009-4-22 15579 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
  SEINET10495115  Erodium moschatum Mary Susan Taylor 1973-1 Taylor 52 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD127489  Eryngium castrense W. R. Powell 1970-4-8 1700 Butte 2.5 miles southwest of Oroville. 73 Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  RSA530363  Erysimum capitatum var. capitatum M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC42866  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC46299  Erythranthe floribunda Vernon Oswald 1989-5-31 3793 Butte Wurlitzer Unit, Vina Plains Preserve. Locally abundant in moist soil along the bottom of the s bank of Pine Creek near the e end of the Unit. 56 Comment
  CAS-BOT-BC153859  Erythranthe glaucescens Mrs. C. C. Bruce 1897-3-1 2106 Butte Little Chico Comment
  CHSC44907  Erythranthe glaucescens Lowell Ahart 1988-7-31 6144 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  OBI9414  Erythranthe glaucescens Robert F. Hoover 1968-5-29 137 Butte Cohasset Rd. Comment
  CHSC113154  Erythranthe guttata Lowell Ahart 2013-11-13 19249 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
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC105162  Erythranthe nasuta Christopher T. Ivey 2007-3-31 371 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC44740  Erythranthe nasuta R. Banchero 1980-4-7 90 Butte Along the La Porte Rd ca 1.1 mi NE of its jct with the Ord-Bangor Hwy. 1.9 mi SW of the jct of the La Porte and Darby Rds. 280 Comment
  CHSC70846  Erythronium multiscapideum Vernon Oswald 1998-3-16 8891 Butte North end of Upper Bidwell Park along lower Jeep Trail paralleling the east side Big Chico Creek north of the old homestead. 243 Comment
  JEPS119740  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte About 100 yards east of Big Chico Creek, about 300 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 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
  SJSU5718  Erythronium multiscapideum T. C. DeWitt 1971-3-25 Butte Butte Cr near Honey Run covered bridge 59 Comment
  CAS-BOT-BC504532  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte About 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  SEINET10938442  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 A Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CAS-BOT-BC402649  Eschscholzia caespitosa Lowell Ahart 1988-3-27 5938 Butte West of the deep road cut, about 1/10 mile north of 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 335 Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC419501  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Near the Hooker Oak east of Chico Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  UCD35608  Euphorbia hooveri Beecher Crampton 1958-8-12 5070 Butte 10 miles southeast of Chico. Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. 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
  CHSC101280  Euphorbia peplus Lowell Ahart 2009-4-3 15532 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC5981  Euphorbia peplus M. MacArthur 1968-6-12 145 Butte Ca. 50 ft. NW of Biology Stockroom and 10 SW of PSA bld., Chico State College campus. 60 Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  JEPS115535  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 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
  CHSC43189  Eurybia integrifolia Robert Banchero 1981-8-4 642 Butte Ca 1.7 mi N of jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  JEPS113325  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CHSC19641  Festuca arundinacea E. Parreno 1968-4-27 75 Butte Vacant lot behind Community Center on e 9th and Linden St., Chico. 59 Comment
  CHSC49546  Festuca californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir. At the edge of the road bordering the reservoir. 1005 Comment
  CAS-BOT-BC278300  Festuca californica subsp. californica Lowell Ahart 1985-5-15 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC116332  Festuca perennis Lowell Ahart 2015-10-20 20563 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
  CAS-BOT-BC278629  Festuca subulata Lowell Ahart 1981-9-15 3159 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CAS-BOT-BC278631  Festuca subulata Lowell Ahart 1988-7-31 6148 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 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. 242 Comment
  UC1562318  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte 0.5 air mi sw of Humbug Summit (near the headwaters of the north branch of Willow Creek, 0.6 mi w of Humbug Road via the logging road just s of Cold Springs); Willow Creek 1969 Comment
  CDA14053  Fragaria vesca G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries enter from east. Comment
  CHSC1545  Fragaria vesca R. Carter 1964-6-12 115 Butte About 3/4 mi. W of Forbstown on Forbstown Rd. on N side of road. 914 Comment
  CAS-BOT-BC62942  Frangula californica subsp. tomentella Vesta Holt 1932-6-1 s.n. Butte Near Chico. Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  CHSC33517  Frangula purshiana R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4142 Butte E of N fork Feather River at Coyote Gap region; on Four Trees Road. Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  CAS-BOT-BC504376  Fritillaria Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC108861  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC19921  Fritillaria affinis M. S. Taylor 1975-3-3 403 Butte Ca. 1/4 mi n of Richardson Springs Camp, ca. 8 mi n of Chico. 91 Comment
  CHSC49654  Fritillaria eastwoodiae Vernon Oswald 1984-4-9 1137 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  POM109764  Fritillaria pluriflora C. C. Bruce 1897-02 s.n. Butte Fields Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  CHSC28493  Galium bolanderi M. S. Taylor 1979-7-22 2168 Butte Pulga bridge, on N side of trail leading from NE side of Pulga bridge over Hwy 70, ca. 27 mi N of Oroville. 487 Comment
  UC426969  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville 1700 Comment
  SBBG121270  Galium bolanderi L. Ahart, L. Janeway 2007-7-10 14284 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca. 17 air mi NE of Oroville 1032 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  POM60708  Galium nuttallii var. tenue A. A. Heller, H. E. Brown 1902-5-6 5454 Butte Berry Canyon (near Clear Creek). Comment
  JEPS103373  Galium parisiense Lowell Ahart 2002-6-21 9748 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  SEINET10869772  Galium parisiense var. leiocarpum Lowell Ahart 1991-5-12 Ahart 6652 Butte On the banks of a small wash, Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 49 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  SEINET10869783  Galium triflorum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4194 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CHSC107395  Garrya fremontii Blake McSorley 2010-2-16 Butte Crownpoint Road and Hwy 32. 579 Comment
  CHSC8595  Gastridium phleoides M. Banning 1969-4-18 83 Butte Table Mt., 1/2 mi. S. of Oregon City junction 30' inside fence. 487 Comment
  JEPS107518  Gastridium ventricosum Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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Jun 4 2007
  CHSC37449  Gayophytum humile R. A. Schlising; R. Banchero, D. Ikeda 1980-6-26 3787 Butte 3.2 miles se of Butte Meadows on Bull Hill Road (= Skyway). In small meadows along Bull Creek. 1511 Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  CHSC115899  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2015-8-12 4478 Butte Butte Creek House Meadow Ecological Reserve, along Humbug Road. 1767 Comment
  CHSC11982  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. In two meadows. 1500 Comment
  CHSC43161  Gentianopsis simplex R. Banchero 1980-7-14 304 Butte 1.1 mi s of the town of Inskip. 4.5 mi n of Stirling City. 1426 Comment
  SEINET10454851  Gentianopsis simplex Mary Susan Taylor 1977-8-17 Taylor 1495 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  CHSC109069  Geranium dissectum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17856 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  SEINET10495130  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4284 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  RSA31857  Gilia capitata subsp. mediomontana A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  CHSC41374  Gilia capitata subsp. pedemontana R. A. Schlising; R. Banchero 1981-4-17 4038 Butte NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  SEINET10906052  Githopsis specularioides Mary Susan Taylor 1981-5-21 Taylor 3768 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
  CHSC24987  Gleditsia triacanthos Cark Pejsa 1976-3-21 Butte Bidwell Park Forestry Station. Comment
  CHSC45500  Gleditsia triacanthos Lowell Ahart 1988-10-28 6190 Butte On the south side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC93475  Glyceria declinata Lowell Ahart 2006-5-3 12564 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC59047  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte Near a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC302476  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC28621  Gnaphalium palustre M. S. Taylor 1979-10-2 2211 Butte On Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  SEINET10948371  Gnaphalium palustre Lowell Ahart 1986-11-9 Ahart 5450 Butte On damp red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 37 Comment
  SEINET10475272  Gnaphalium thermale Mary Susan Taylor 1979-10-5 Taylor 2233 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
  SEINET10832440  Gratiola ebracteata Mary Susan Taylor 1980-3-28 Taylor 2399 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  CHSC109661  Gymnocladus dioicus Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  UC575328  Hackelia californica David D. Keck and J. Clausen 1935-6-25 3772 Butte 5 mi ne of Chaparral; Spring Valley Reservoir 1706 Comment
  CHSC31715  Hainardia cylindrica L. Ahart 1974-6-3 464 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC5942  Hedera helix M. MacArthur 1968-6-17 176 Butte SW edge of Big Chico Creek, NE of Dining Hall, Chico State College campus. 60 Comment
  CHSC103730  Hedypnois cretica Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC96913  Helenium puberulum Lowell Ahart 2006-7-27 14399 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC314696  Helianthella californica var. californica A. A. Heller 1915-5-25 11897 Butte Ridge above Enterprise in teh Sierra Nevada 609 Comment
  CHSC86586  Helianthella californica var. nevadensis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7859 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.2 km east-southeast of south end of Bidwell Bar bridge. 277 Comment
  CDA13913  Helianthus bolanderi G. F. Hrusa, T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SD175807  Heliotropium europaeum D. G. Kelch 2006-8-2 06 340 Butte Along butte Cree, north of Durham-Dayton Highway. 46 Comment
  SEINET10497322  Heliotropium europaeum Mary Susan Taylor 1979-10-2 Taylor 2212 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC34021  Helminthotheca echioides L. Ahart 1981-7-26 3009 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking area s, ca. 1/2 mi nw of Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC30711  Hemizonella minima M. S. Taylor 1980-5-27 2669 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC46334  Hemizonella minima Lowell Ahart 1989-5-29 6325 Butte Near the dirt road, east of Mooreville Ridge, about 2 air miles north of the Lost Creek Dam, south of the west branch of Pinkard Creek. 1188 Comment
  CHSC86432  Hemizonella minima Jenny Marr 1994-6-13 87 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  SEINET10759135  Hemizonia fasciculata Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7030 A Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  POM219506  Hemizonia pungens subsp. pungens H. F. Copeland 1923-8-13 545 Butte Nelson. Comment
  CHSC30420  Hesperevax acaulis var. acaulis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-12 552 Butte 1.0 mi E of Palermo-Honcut Hwy, 100 m S of Melody Lane. 48 Comment
  JEPS114050  Hesperevax acaulis var. acaulis Robert E. Preston 2007-4-4 2421 Butte 5.2 moi NNE of Oroville, on North Table Mountain Comment
  CHSC37407  Hesperocnide tenella R. A. Schlising 1982-2-21 4224 Butte S of Paradise, near Elliot Spring House. 213 Comment
  CHSC93374  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut. 45 Comment
  CAS-BOT-BC175976  Hesperolinon californicum Mrs. C. C. Bruce 1897-3-1 1775 Butte Little Chico Comment
  CAS-BOT-BC175996  Hesperolinon californicum Lowell Ahart 1980-5-12 2261 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS104299  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CDA13914  Hesperolinon micranthum G. F. Hrusa, T. D. Wilfred 1997-7-3 13980 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC96245  Heterocodon rariflorum R. Fischer 2006-5-27 995 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  SEINET10972527  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte JONESVILLE 1150 M Comment
  SEINET10972530  Heterocodon rariflorum James D. Jokerst 1980-7-18 Jokerst 0996 Butte Top of North Table Mountain, about 100 mile northwest of the fct.(?) of Cherokee Road and the east edge of the mountain Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC3603  Heteromeles arbutifolia Gerry Carrauthers 1966-2-28 23 Butte Ca. 10 mi N.E. of Chico at end of dirt road beyond Bidwell Golf Course ca. 5 mi. Comment
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  UC725600  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mi above Pentz (on the Paradise grade) Comment
  CHSC29803  Heterotheca oregona var. compacta M. S. Taylor 1979-10-2 2210 Butte Sacramento River, at Chico Landing, off River Rd, ca. 5 mi w of Chico. 30 Comment
  CAS-BOT-BC420459  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte along Pulga Road, about 1/2 mile SW of Bardees Bar along the N Fork of the Feather River, about 3 miles SW of Pulga 365 Comment
  JEPS115602  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  UC1562363  Hieracium argutum Lowell Ahart 1990-7-19 6572 Butte about 5 mi ne Forbestown (on steep road cut at s side of road); Forbestown Reservoir (Dam) 457 Comment
  CDA42950  Hirschfeldia incana L. Ahart 2012-10-28 18533 Butte Marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA483122  Hirschfeldia incana L. Ahart, P. Ahart 1984-6-10 4689 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  RSA0039296  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte Bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC44570  Holcus lanatus Lowell Ahart 1979-6-9 1930 Butte East of Kunkle Creek, about 2 miles south-east of Paradise. 457 Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CHSC4410  Hordeum murinum subsp. glaucum 1966-5-25 Butte Arcadian Ave. across from Ed.-Psy. Building, Chico. Vacant lot. Comment
  CHSC32108  Horkelia californica subsp. dissita L. Ahart 1975-6-23 804 Butte Along North Honcut Creek. Near Honcut. 53 Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 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
  RSA451653  Horkelia elata L. Ahart, P. Ahart 1984-5-28 4647 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca 16 mi NE of Oroville. 450 Comment
  POM275226  Horkelia fusca subsp. parviflora Lyman D. Benson 1932-7-28 3977 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UCD113497  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CAS-BOT-BC143357  Horkelia tridentata Lowell Ahart 1980-5-25 2350 Butte Along Ponderosa Way 500 Comment
  UC481567  Horkelia tridentata subsp. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CAS-BOT-BC536265  Horkelia tridentata var. tridentata Javier Penalosa 1962-6-18 2470 Butte Near confluence of French and Peavine Creeks 640 Comment
  CHSC881  Hosackia oblongifolia 1954-5-30 Butte Rag Dump 5 above Paradise. 1127 Comment
  CHSC885  Hosackia pinnata L. Nelson 1935-5-25 Butte Cohasset. 609 Comment
  CHSC36515  Hosackia stipularis var. ottleyi L. Ahart 1982-6-1 3530 Butte Above road, ca. 1/8 mi n of jct of Lower Forbestown Rd and Ponderosa Way, along Ponderosa Way, ca. 5 mi w of Forbestown. 700 Comment
  POM135547  Hypericum concinnum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  RSA458217  Hypericum concinnum M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  SD42246  Hypericum concinnum Carl Wolf 1941-7-23 4315 Butte Northern Sierra Nevada, 6.6 mi W. of De Sabla on Road to Forest Ranch 762 Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC51366  Hypericum formosum var. scouleri Vernon Oswald 1990-9-11 4448 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. Occasional on the swampy meadow. 960 Comment
  POM183154  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville. Comment
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC108761  Hypochaeris glabra L. P. Janeway 2011-6-7 10368 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC38122  Hypochaeris glabra R. L. Ondricek-Fallscheer 1983-5-8 168 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 188 Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  RSA754794  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  CAS-BOT-BC133563  Iris hartwegii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC79862  Iris hartwegii Leanna Brown; Shirley Innecken 1999-3-9 73 Butte Coutolenc Rd., Dam access area. 753 Comment
  CAS-BOT-BC133556  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22527 Butte State Hwy. 32, 11.5 mi. s. from Lomo 944 Comment
  CHSC49637  Iris hartwegii subsp. hartwegii Vernon Oswald 1984-5-28 1213 Butte Cohasset Rd., 0.3 mi n of the end of the pavement. 1005 Comment
  CHSC2207  Iris macrosiphon I. Huffman 1930-5-5 Butte Paradise. 548 Comment
  CHSC3991  Iris macrosiphon A. K. Revard 1967-4-16 22 Butte S. of dirt roadside ca. 0.3 mi up from Cohasset Hwy., and ca. 3.3 mi n on Cohasset Hwy. from the Richardson Springs Rd. Comment
  CHSC40324  Iris macrosiphon Lowell Ahart 1985-3-22 4848 Butte Found about 1/2 mile northeast of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 Comment
  CHSC52480  Iris macrosiphon Jan M. Karaz 1979-5-13 17 Butte 1.2 mi N of Forest Ranch on hwy 32 at top of the ridge. Comment
  CHSC90653  Iris macrosiphon Doug Burcombe 1988-4-20 16 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  RSA0118713  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CDA42452  Isoetes howellii T. C. Fuller 1958-4-15 4793 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  UCD135856  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles northeast of Bangor and ca. 15 miles southeast of Oroville. 342 Comment
  CHSC113230  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 A Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC96805  Isoetes nuttallii Lowell Ahart 2007-5-22 13903 Butte Along small 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
  CHSC69474  Jensia rammii James D. Jokerst 1982-5-28 1584 Butte Concow Basin W of Concow Creek (and Concow Rd.) ca. 0.25 mi N of Concow Lake. 609 Comment
  CAS-BOT-BC340247  Jensia rammii Lowell Ahart 1985-5-9 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 40 Comment
  UCD133407  Jensia rammii L. Ahart 1976-4-15 1067 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC23348  Juglans hindsii S. K. Ray 1971-4-27 19 Butte N side of Gridley-Colusa Hwy., 0.5 mi. W of Randolph Ave. Jct., 0.5 mi. W of Gridley Comment
  CHSC8228  Juncus B. Hamilton 1969-5-5 46 Butte Found near Big Chico Creek in back of Dining hall. Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC34202  Juncus acuminatus J. D. Jokerst; L. Ahart 1981-9-26 1487 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico E bank Sacramento River. Comment
  CHSC49696  Juncus acuminatus Vernon Oswald 1985-5-20 1776 Butte Oroville Wildlife Area near the outlet of Thermalito Afterbay. Comment
  UC1609495  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  UC1609045  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte about 6 air mi ne of Feather Falls (on the w side of Fall River, about 100 yards w of the bridge across Fall River); Fall River 1036 Comment
  UC1562288  Juncus bufonius Lowell Ahart 1990-7-4 6545 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (along McCabe Creek); Lake Oroville, McCabe Creek 243 Comment
  SEINET10872253  Juncus bufonius Mary Susan Taylor 1982-4-28 Taylor 4366 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC112720  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC44244  Juncus bufonius var. bufonius V. Oswald; L. Ahart 1988-7-13 3578 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC82417  Juncus bufonius var. bufonius Lowell Ahart 2002-5-7 9633 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
  CHSC99312  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 A Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  JEPS110161  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS120656  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC61518  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  RSA0036992  Juncus cyperoides Lowell A. Ahart 2013-7-1 18820 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
  CDA2695  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte Along Black Bart Road, Forbestown. 0 Comment
  CHSC49609  Juncus drummondii Vernon Oswald; Lowell Ahart 1987-7-1 3084 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. On the s edge of the large lake. 1935 Comment
  CHSC30437  Juncus dubius L. Ahart 1980-7-29 2512 Butte Gutter along Lower Forbestown Rd., (Ponderosa Rd.) ca. 1/4 mi N of the intersection with Robinson Mill Rd., W of Forbestown. 750 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC94601  Juncus effusus subsp. pacificus Lowell Ahart 2006-9-13 13324 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
  CHSC99750  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  CHSC59020  Juncus hemiendytus var. hemiendytus Lowell Ahart 1992-7-26 6860 Butte In a small meadow, about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  JEPS98682  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  UCD169927  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte About 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air) north of Clipper Mills. Along the wet road gutter, on the south side of a good forest road. 1266 Comment
  CHSC47559  Juncus leiospermus Lowell Ahart 1979-5-7 1857 Butte Near a large lava rock with Indian Mills in it, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC93493  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 339 Comment
  JEPS122224  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19390 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC44831  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1659 Butte Along the edges of the West Branch of the Feather River. Coon Hollow at its west end where forest service rd. 27N74 crosses the river. 1615 Comment
  CHSC49620  Juncus nevadensis Vernon Oswald 1983-6-22 737 Butte Soda Springs Campground near Hwy 32, ca. 4 mi nne of Lomo. Beside Chico Creek. 1112 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA0119188  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 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
  CHSC31129  Juncus oxymeris L. Ahart 1980-7-4 2463 Butte In a small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC66170  Juncus oxymeris Vernon H. Oswald; Lowell Ahart 1996-5-27 7659 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a marshy area on the S side of the levee road at the SW cor-ner of Tract 3.4, Sanctuary II. 32 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  JEPS113768  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  SEINET10472459  Juncus patens Mary Susan Taylor 1977-8-16 Taylor 1446 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  JEPS127245  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA754880  Juncus tenuis L. Ahart 2009-6-18 15914 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  UC1609503  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  CHSC28748  Juncus uncialis James D. Jokerst 1978-4-12 121 Butte Richvale Vernal Pools, 1/4 mi. S. of the intersection of Hwy 162 and Hwy 99, along and W. of the latter. Comment
  SEINET10971394  Juncus uncialis Lowell Ahart 1983-4-10 Ahart 3931 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC97252  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale. 29 Comment
  JEPS123883  Keckiella breviflora var. glabrisepala Lowell Ahart 2015-5-5 20143 Butte Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Comment
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  CHSC10642  Kickxia elatine Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113115  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS122081  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC43002  Lactuca saligna Lowell Ahart 1987-7-17 5830 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10872059  Lactuca scariola var. integrata Mary Susan Taylor 1981-2-11 Taylor 3377 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
  CHSC30751  Lagophylla glandulosa M. S. Taylor 1980-8-30 3322 Butte Along creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  JEPS19943  Lagophylla glandulosa R. F. Hoover 1936-5-21 1169 Butte 7 mi n Chico Comment
  UC217501  Lagophylla glandulosa H. M. Hall 1917-5-13 10299 Butte Butte Creek Comment
  RSA11147  Lagophylla glandulosa C. B. Wolf, E. R. Johnson 1934-10-5 2120 Butte 11 miles from Oroville on road to Paradise, Sacramento Valley. 152 Comment
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  CAS-BOT-BC354118  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte On the Chico-Oroville rd 8 miles from Oroville. Comment
  CHSC35675  Lasthenia glaberrima R. E. Preston 1982-5-9 279 Butte At edge of pasture on e side of Cohasset Rd, ca. 0.4 mi n of Eaton Rd. 57 Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  JEPS114974  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CHSC45281  Lathyrus hirsutus Vernon Oswald 1988-5-5 3297 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the highway near Dry Creek. 53 Comment
  CHSC48508  Lathyrus nevadensis var. nevadensis Vernon H. Oswald 1984-4-16 1153 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  SEINET10487279  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart; Jeffrey Strachen 1980-5-6 Ertter 3277 Butte Peter ahart ranch about 2.5 mi nne of honcut between oroville and marysville, Dried vernal pool previously plowed as grainfield, now reverted, very rocky, Valley grassland. T17n, r4e, sec 4 ne 1/4. Higher ground around pool. Flowers Rose red. 30 Comment
  CAS-BOT-BC213286  Lathyrus sulphureus Lowell Ahart 1983-5-28 4025 Butte Along the trail to the over-look at Feather Falls, 3 1/2 miles north of Feather Falls 600 Comment
  CHSC115430  Lathyrus sulphureus Ariana Gehrig 2013-4-30 Butte Paradise Lake, Magalia. Along pathway. 783 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  UCD106434  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  SEINET10973184  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1091 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  JEPS115691  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CAS-BOT-BC321758  Layia fremontii Richard R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca 8 miles NW of Chico. 40 Comment
  CHSC3471  Layia fremontii Roger Jaegel 1966-3-21 64 Butte Located six miles southeast of Chico two miles east of Highway 99 on Pentz Road. Comment
  SEINET11806702  Layia fremontii Unknown 1982-1 3 Butte 3 km NE of int. of Chico Canyon Rd & Manzanita Ave., Chico, 1 m from edge of Chico Canyon Rd in S Comment
  UC1594555  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC99323  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-8 14728 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CDA7529  Leontodon taraxacoides subsp. taraxacoides L. Heinricks 1968-8-15 Butte 4675 Bagget-Marysville Road, Oroville. 0 Comment
  CHSC71305  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte West side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  CAS-BOT-BC89699  Lepidium latifolium Lowell Ahart 1981-9-10 3143 Butte Gray Lodge, southwest of Gridley. 35 Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CHSC85395  Lepidium nitidum John Dittes; Josephine Guardino 1992-5-7 484 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CAS-BOT-BC12801  Lepidium perfoliatum Lowell Ahart 1984-6-8 4680 Butte 3 miles NE of the Ponderosa Dam. The road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Road. 500 Comment
  SEINET10448624  Lepidium pinnatifidum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5154 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC26276  Lepidium virginicum var. pubescens Joan P. Warner 1977-4-22 3 Butte Along Hwy 70, ca. 2.2 km sw of Butte-Plumas county line, ca. 23 km nw of Paradise. 485 Comment
  CHSC51289  Leptochloa fusca subsp. fascicularis Lowell Ahart 1990-9-30 6607 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC83005  Leptochloa fusca subsp. fascicularis Lowell Ahart 2002-9-7 9929 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CHSC1276  Leptosiphon bicolor R. Carter 1964-3-13 42 Butte Bidwell Park, Chico, across from golf course beside building at old rifle range. Comment
  CHSC23461  Leptosiphon bicolor J. R. Lee 1974-4-20 2 Butte Found on hill 400 yards sw of Covered Bridge. 7.2 mi from the Chico city limits on Honey Run Road. 137 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC54307  Leptosiphon bolanderi Vernon H. Oswald; Lowell Ahart 1991-6-5 4644 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
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 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
  CHSC97027  Leptosiphon harknessii Susan Bazell; R. Schlising 2007-6-21 53 Butte East of Jonesville on Lassen National Forest Road 26N27. On flat gravelly spot at edge of road across from Butte Creek House. 1767 Comment
  CHSC30275  Lessingia nemaclada M. S. Taylor 1979-7-22 2170 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge over Hwy 70, ca. 27 mi n of Oroville. 487 Comment
  CAS-BOT-BC342061  Lessingia virgata Lowell Ahart 1976-9-4 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC38377  Lessingia virgata Vernon Oswald 1983-8-26 1030 Butte Upper Bidwell Park, Chico, near the n-e side of Horseshoe Lake. 103 Comment
  UCD169079  Lessingia virgata Ramona Robison 2013-4-15 12 Butte Clay Pit State Vehicular Recreation Area, located two miles west of the town of Oroville. 41 Comment
  UCD159567  Leucanthemum maximum D. S. Park 2011-6-27 304 Butte East shore of Thermalito Afterbay. Growing on roadsides. Disturbed. 1999 Comment
  CAS-BOT-BC334597  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of teh Feather River near the Poe Power House about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  CHSC28421  Lewisia cantelovii M. S. Taylor 1979-9-28 2194 Butte Butte county line at Hwy 70, between boundary and ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CHSC100828  Lewisia nevadensis Susan Bazell; Robert Schlising 2006-7-6 63 Butte Scotts John Meadow. E of Jonesville on road 26N27 towards Humbug Road, about 0.2 mi S of dirt road following Scotts John Creek. In upper wet part of meadow. 1767 Comment
  CHSC100837  Lewisia nevadensis R. A. Schlising 1980-6-26 3787 Butte 3.2 mi SEof Butte Meadows on Bull Hill Road (='Skyway'); in meadows along Bull Creek. 1511 Comment
  POM280175  Lewisia nevadensis J. H. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  RSA4405  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC509480  Lilium kelleyanum Lowell Ahart 1988-5-29 6099 Butte Along a small branch of Bean Creek, on the north side of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC43046  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-5 2139 Butte French Cr Rd 6.2 mi from OroQuincy Hwy and Stanwood Saddle. Along Ram Cr ca 0.2 mi up from mouth at French Cr. 609 Comment
  CHSC31351  Limnanthes alba P. Lynn Lester 1980-4-14 21 Butte Ca. 3 yds e of Meridian Rd, ca. 0.1 mi n of Wookey Rd, ca. 0.9 mi s of Pine Cr, ca. 3 mi e of Hwy 99, ca. 7 mi nnw of Chico. 88 Comment
  CHSC76945  Limnanthes alba Margie Collins 1894-5-1 Butte Chico. Comment
  UC1303182  Limnanthes alba A. A. Heller 1926-4-12 13917 Butte 8 mi n Chico Comment
  CHSC88572  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 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
  HSC32395  Limnanthes douglasii R. A. Vanbianchi 1974-4-20 242 Butte Table Mtn. 305 Comment
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  UCD22634  Limnanthes douglasii Joseph Laferriere 1982-4-18 22 Butte Table Mountain, streambank 1/2 mile east of road, 5 miles north of Oroville. 384 Comment
  UCD116438  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte east of Chico airport. Comment
  UCD128337  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  CHSC31874  Limosella aquatica L. Ahart 1978-4-2 1624 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD169097  Limosella aquatica Ramona Robison 2013-4-16 14 Butte Clay Pit State Vehicular Recreation Area, located in pools within Clay Pit SVRA. 41 Comment
  CAS-BOT-BC246141  Limosella aquatica Lowell Ahart 1982-5-1 3400 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 1/10 mile east of Honcut 50 Comment
  CHSC96235  Linanthus dichotomus R. Fischer 2006-4-10 990 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east 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. 57 Comment
  CAS-BOT-BC111974  Lipocarpha micrantha Lowell Ahart 1974-8-14 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 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
  CHSC20125  Liquidambar styraciflua M. S. Taylor 1975-5-6 563 Butte California State University, Chico, ca. 3 ft se of Little Cafeteria. 60 Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  POM196098  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  CHSC42859  Lithophragma bolanderi Lowell Ahart 1987-5-12 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC28033  Lithophragma parviflorum J. D. Jokerst 1979-3-18 171 Butte 200 yds off Hwy 32, 3 mi e of Chico. Comment
  CHSC96642  Lithophragma parviflorum var. trifoliatum Lowell Ahart 2007-3-28 13602 Butte By Jurassic-Triassic metavolcanic rocks, Peter Ahart Ranch, about 2 1/4 miles north and 2 1/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SJSU5717  Lithophragma parviflorum var. trifoliatum T. C. DeWitt 1971-4-2 Butte Humboldt Rd, 1 mi S of intersection with Hwy 32 304 Comment
  CAS-BOT-BC428444  Lithophragma trifoliatum John Thomas Howell 1978-4-17 52845 Butte Table Mountain. 381 Comment
  CAS-BOT-BC342388  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  JEPS75439  Lolium multiflorum W. L. Jepson 1934-5-4 16606 Butte 1 1/2 mi s Nord (swales of Pine Creek, near Sacramento River); near Sacramento River, Pine Creek Comment
  RSA699520  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Edge of upper Bidwell Park in Chico on the east side addition along Highway 32, road near the north end of Humboldt Trail 427 Comment
  JEPS14510  Lomatium dasycarpum subsp. tomentosum Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5604 Butte below bridge on Nelson Bar rd. (just above N. Fork Feather R.) 198 Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC30824  Lomatium utriculatum M. S. Taylor; J. D. Jokerst 1980-4-18 2534 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC34798  Lomatium utriculatum M. S. Taylor 1980-4-27 2569 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  CHSC38740  Lomatium utriculatum Vernon Oswald 1983-3-7 131 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at about the level of Alligator Hole (0.15 mi w of the power lines). 128 Comment
  SEINET12121859  Lomatium utriculatum Unknown 1985-1 4976 Butte W of Lunt Road, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  UC600683  Lonicera conjugialis H. F. Copeland 1920-7-29 460 Butte Jonesville woods Jonesville Comment
  CAS-BOT-BC240446  Lonicera hispidula C. R. Quick 1941-6-8 41 -05 Butte About 2 miles S. of Big Bar Mt. Comment
  CHSC115688  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  CHSC46357  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 11/2 miles south of Forbestown Road. 670 Comment
  RSA592528  Lonicera interrupta S. O. Mattoon 1970-6-12 19 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  UC600684  Lonicera involucrata var. involucrata H. F. Copeland 1920-7-29 466 Butte Jonesville Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  SEINET10451970  Lotus humistratus Mary Susan Taylor 1981-4-21 Taylor 3550 Butte T23N R4E sw sec 36, Pulga SW quad. Serpentine, S side of Concow Rd, on ridge, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 2 mi N of Lake Concow, ca. 20 air mi NE of Oroville. 2800 ft. 853 Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  CDA34633  Lotus purshianus var. purshianus L. Ahart 2009-6-19 15930 Butte On the north side of Ten Mile House Road, 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. Comment
  UC204726  Lotus purshianus var. purshianus A. A. Heller 11615 Butte border of Chico meadows Chico Comment
  UCD66032  Ludwigia hexapetala R. McKee; G. Woods 2006-8-1 06- 30 -LU Butte Oroville Wildlife Area, e. of Feather River, w. of Hwy 70 access from Pacific Hts Rd. 30 Comment
  CHSC84016  Ludwigia palustris Lowell Ahart 2003-6-23 10312 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC75970  Ludwigia peploides subsp. montevidensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8172 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  NY16038  Lupinus A. A. Heller 1914-2-2 11166 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  CHSC48521  Lupinus albicaulis Vernon Oswald 1985-5-2 1742 Butte Hwy 32 0.3 mi ne of the business center of Forest Ranch. 670 Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  CAS-BOT-BC201355  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49115 Butte Berry Creek - Brush Creek Road Comment
  UCD107237  Lupinus bicolor A. A. Heller 1919-4-18 13109 Butte Canon of Mud creek above Richardson Springs. Comment
  SEINET10452030  Lupinus bicolor subsp. tridentatus Lowell Ahart 1983-4-10 Ahart 3925 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  SEINET10484925  Lupinus bicolor subsp. tridentatus Frediani 1981-3-24 FREDIANI 2 Butte Petals bluish with white banner. N side of butte creek, 6.2 mi. E of hwy 99 and skyway inerchange; ca. 2 Mi. Se Of chico. A foothill woodland. 107 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  SEINET10485451  Lupinus latifolius Mary Susan Taylor 1982-8-16 Taylor 5002 Butte T24n, r4e, se1/4sw1/4, sec 1. Pulga nw quad. Corolla blue. At loop in rd Above discovery creek, ca 1 mi. N of bald mt., Ca 4 mi. Ne of sterling city. Open to sun, dry. With digitalis purpurea, ribes roezlii, gnaphalium thermale. 1585 Comment
  SEINET10452088  Lupinus latifolius var. columbianus Heidi H. Schmidt 1993-6-15 Schmidt 860 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  UC478506  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville , Colby Canyon (Coby Canyon) 1600 Comment
  CHSC84644  Lupinus microcarpus var. densiflorus Matt Quinn 2001-4-29 51 Butte Found on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  UCD108993  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico. Comment
  SEINET10490163  Lupinus nanus subsp. menkerae Uchida 1981-4-8 UCHIDA 8 Butte Flower brilliant blue with white spots on the banner. Large population, table Mtn, w side of cherokee rd, 6 mi n of intersection of table mtn boulevard. Chico quadrangle. T.20n,r.4e,sec.20 (se 1/4, nw 1/4). 417 Comment
  SEINET10490164  Lupinus nanus subsp. menkerae Welgan 1979-4-15 WELGAN 11 Butte Pink corolla with a purplish banner; normally a corolla of blue and white. Scattered population, ca 6 mi n of oroville, .5 mi w of cherokee mtn rd. Open Field in foothill woodland. Soil a silty loam overlying rocks. 366 Comment
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  CHSC38513  Lupinus polycarpus Vernon Oswald 1983-3-31 237 Butte Upper Bidwell Park, Chico, near the s-w edge of the parking lot at Salmon Hole (1.4 mi e of the power lines). 152 Comment
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  SEINET10452166  Lupinus vallicola Mary Susan Taylor 1981-5-1 Taylor 3588 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CDA13297  Luzula comosa G. F. Hrusa, T. D. Wilfred 1996-7-9 13145 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 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
  CHSC42522  Luzula macrantha Lowell Ahart 1987-5-12 5635 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 Comment
  CAS-BOT-BC441210  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 s.n. ( 4091 ?) Butte About 2 mi. E of Bidwell Bar Bridge Comment
  CDA34634  Lychnis coronaria L. Ahart 2009-6-19 15935 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS95938  Lythrum hyssopifolia Lowell Ahart 1999-8-13 8169 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
  SEINET10452841  Lythrum hyssopifolia Mary Susan Taylor 1977-10-10 Taylor 1519 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  UC65347  Madia elegans A. A. Heller 1902-5-10 5518 Butte Clear Creek P.O. Clear Creek Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  CHSC40481  Madia exigua Lowell Ahart 1985-5-15 4986 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  SEINET10475532  Madia exigua Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4050 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  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
  CHSC97018  Madia gracilis L. P. Janeway 2007-7-26 9072 Butte Northern High Sierra Nevada. Plumas National Forest; about 160 m. west of the French Creek Road crossing of French Creek near the mouth of Ram Creek. 622 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  CAS-BOT-BC345239  Madia subspicata Lewis S. Rose 1945-5-12 45018 Butte Richardson Springs 304 Comment
  JEPS98930  Madia subspicata Bruce G. Baldwin, Gerald D. Carr, Lowell Ahart 1988-6-9 713 Butte 1 mi N, 3 mi E of Honcut (Peter Ahart Ranch, above North Honcut Creek) Comment
  CAS-BOT-BC347378  Malacothrix floccifera Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC572335  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  CHSC34967  Malva neglecta R. A. Schlising 1981-9-30 4209 Butte Just west of S. Pacific RR and Chico State University. Comment
  CDA38815  Malva parviflora L. Ahart 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  SEINET10479979  Malva parviflora Mary Susan Taylor 1982-4-28 Taylor 4374 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC1038  Malva sylvestris J. Baynes 1929-4-21 Butte College Campus, Chico. 57 Comment
  SJSU15293  Marah fabacea Lisa Morton 2002-3-23 3 Butte Bidwell River Park, Intersection of W. Sacramento and River Roads 40 Comment
  CHSC87455  Marah watsonii R. D. Fischer 2004-3-20 89 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. 396 Comment
  CHSC52225  Marrubium vulgare L. P. Janeway 1988-5-19 2673 Butte Along Cohasset Rd near the Anderson Mill Site; near the county line. 1133 Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  CHSC24653  Marsilea vestita D. Hattem 1976-4-10 3 Butte Ca. 4.2 mi nw of Chico, ca. 250 m n of Hwy 32. 91 Comment
  CAS-BOT-BC67812  Marsilea vestita Lowell Ahart 1980-6-15 2376 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC600572  Marsilea vestita subsp. vestita H. F. Copeland 1930-7-28 Butte near head of Willow Creek Jonesville Comment
  CHSC101263  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC3406  Matricaria discoidea Alice L. Stoll 1966-4-17 127 Butte At 630 Esplanade, Chico. Comment
  SEINET10474307  Matricaria matricarioides Mary Susan Taylor 1981-5-15 Taylor 3743 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  SEINET10839148  Matricaria occidentalis Mary Susan Taylor 1982-4-28 Taylor 4359 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC28966  Meconella californica J. D. Jokerst 1980-11-23 446 Butte Edge of flat ridge top ca 1/4 mi NW of Neal Rd. 198 Comment
  CHSC38580  Meconella californica Vernon Oswald 1983-3-16 188 Butte Upper Bidwell Park, Chico, beside the South Rim Trail just e of the barbed-wire fence. 121 Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  UCD106759  Medicago arabica A. A. Heller 1915-5-2 11864 Butte Hills 12 miles northeast of Chico near Rock creek. Comment
  SEINET12155167  Medicago hispida P. L. Ricker 1912-1 3949 Butte Chico Comment
  CHSC101812  Medicago lupulina Lowell Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC111369  Medicago lupulina Lowell Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park,Chico. 79 Comment
  CHSC98803  Medicago lupulina L. P. Janeway 2008-5-19 9365 Butte Sacramento Valley. East side Chico; east side of Hwy 99 between 8th and 9th Streets, in the western part of the CalTrans Park and Ride area. In a wet area of open compact ground with various ornamental plantings between asphalt parking areas. 66 Comment
  JEPS115379  Medicago lupulina Lowell 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 234 Comment
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  CHSC35693  Medicago polymorpha J. D. Jokerst 1982-4-19 1532 Butte Top of North Table Mountain, ca 1/4 mi N of Cherokee Rd at the mesa's E edge. Comment
  HSC32649  Medicago polymorpha Patricia Datzman 1974-4-20 17 Butte 300 yards S of intersection of Pentz Rd. and Clarke Rd. Comment
  JEPS94656  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 0.1 mi n Thermalito Diversion Dam (w of dirt road, e of the Thermalito Diversion Pool, 1/4 mi ne of Oroville) 67 Comment
  CDA4226  Medicago scutellata P. B. Kennedy 1924-1 Butte Chico. 0 Comment
  JEPS106263  Melica aristata Lowell Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  RSA718395  Melica bulbosa L. Ahart 2006-7-16 13009 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
  CDA13298  Melica harfordii G. F. Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Plumas National Forest; Common colonies on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CHSC105478  Melica harfordii L. P. Janeway 2010-6-19 10021 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
  CHSC38831  Melica torreyana Vernon Oswald 1983-4-10 320 Butte Upper Bidwell Park, Chico, ca. 500 ft w of Day Camp. In bed of an old oxbow of Chico Creek. 91 Comment
  UCD80581  Melica torreyana CNPS SN Foothill Team 2005-5-25 SNFN 0170 a Butte City of Chico, Upper Bidwell Park, upslope on the east side of Big Chico Creek, about 300 m south of the northern boundary of Upper Bidwell Park. 278 Comment
  CDA5728  Melilotus indicus L. Ahart 2005-5-2 11772 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. Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 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
  CHSC43838  Mentha pulegium B. Castro 1987-9-8 215 Butte E of the lodge at Richardson Springs resort. 182 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
  CHSC78519  Mentha spicata Lowell Ahart 2000-8-30 8675 Butte Margins of a large pond, about 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC1021  Mentzelia laevicaulis R. M. Staley 1952-7-16 Butte Along Skyway. 365 Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  CHSC42718  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte Around a small drying meadow, at Sunflower Flat, about 2 1/2 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  CAS-BOT-BC428763  Micranthes californica Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CHSC1674  Micranthes integrifolia L. Oliver; D. Sloan 1935-2-23 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC429039  Micranthes nidifica Lowell Ahart 1983-3-27 3905 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  UCR187081  Micropus californicus Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 012 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  SEINET10475176  Micropus californicus Mary Susan Taylor 1974-4-30 Taylor 195 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10871997  Micropus californicus Mary Susan Taylor 1981-5-21 Taylor 3775 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
  CHSC33350  Micropus californicus var. californicus R. M. Winchell 1980-4-17 3 Butte Covered Bridge along Little Butte Creek. Comment
  CAS-BOT-BC348881  Microseris douglasii subsp. douglasii E. B. Copeland 1899-4-22 s.n. Butte Chico Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  SEINET7073609  Mimulus aurantiacus A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  UCD122207  Mimulus aurantiacus Joseph M. DiTomaso 1976-5-23 466 Butte Lake Oroville, peninsula on south end. 274 Comment
  UCR198098  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte [Middle Butte Creek mouth] 427 Comment
  UC518026  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1933-5-26 33186 Butte 5 mi e Oroville; Feather River canyon 152 Comment
  UC885699  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1939-6-7 39242 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UCD89434  Mimulus filicifolius Jason Sexton 2010-5-22 2 Butte East of Oroville, Big Bald Rock area. 932 Comment
  RSA712824  Mimulus floribundus L. Ahart 2006-5-3 12563 Butte About 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 378 Comment
  UCD122721  Mimulus glaucescens Kirsten L. Tarp 1981-4-20 7 Butte Bidweel Park e of Chico, n of Chico municipal golf course. 97 Comment
  CHSC118860  Mimulus guttatus Christopher T. Ivey 2017-5-27 392 Butte Honeyrun Road, about 6.5 km NE of bridge crossing Butte Creek, S side of road. 453 Comment
  JEPS117543  Mimulus guttatus Lowell Ahart 2010-6-9 16775 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  JEPS86611  Mimulus guttatus L. R. Heckard, J. C. Hickman, M. Wolf, and S. D'Alcamo 1989-4-12 6727 a Butte n Oroville (off Cherokee Rd.); Table Mountain Comment
  POM43708  Mimulus guttatus C. C. Bruce 1897-02 2105 Butte Little Chico. Comment
  UC196160  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  UC886239  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  SEINET10570236  Mimulus kelloggii Mary Susan Taylor 1980-4-27 Taylor 2552 Butte T23N R3E west center border sec 26. Paradise quad. On N side of Ponderosa Way Road, ca. 0.5 mi E of Nimshew Rd, ca. 1 mi S of Nimshew; in open vernally dry embankment. With J.D. Jokerst. 610 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  UC1564742  Mimulus lewisii V. Oswald and L. Ahart 1989-8-15 3945 Butte 1.2 mi (air) n Philbrook Reservoir (Soda Ridge Rd. 1.4 mi w of its junction with Coon Hollow Rd., between the road and a marshy lake visible from the road) 1780 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 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
  UC426953  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville 1500 Comment
  UC426954  Mimulus primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville 1500 Comment
  POM5144  Mimulus torreyi Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC61722  Minuartia californica J. A. Krause 1991-2-26 10 Butte Police pistol range, S margin Bidwell Park, ca 10 yds S of Butte Creek. Comment
  RSA20869  Minuartia californica C. B. Wolf 1937-3-29 8330 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are 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
  HSC32406  Minuartia douglasii Gary S. Lester 1974-4-20 106 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  SEINET10537577  Minuartia pusilla Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5241 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
  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
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  SEINET13948625 Image available Monardella odoratissima Lewis S. Rose 1951-1 51019 Butte Jarboe Pass, 22 mi N of Oroville; 1900 ft alt. 579 Comment
  JEPS105012  Monardella odoratissima subsp. pallida Dean W. Taylor 1995-8-6 15386 Butte Rocky Ridge, north end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest; Northern Sierra Nevada 975 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
  CAS-BOT-BC220451  Monardella sheltonii John Thomas Howell 1976-7-14 51812 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  UC1606732  Monardella venosa B. Castro, J. D. Jokerst 1992-5-19 457 Butte unnamed canyon se Neal Road (ca. 200 ft nw of intermittent creek); Hamlin Canyon quad. 79 Comment
  NY411115  Monochoria vaginalis L. Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. Valley Grassland. 33 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
  CHSC45392  Montia chamissoi Vernon Oswald 1983-8-4 957 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Growing in a sandy, wet spot along Butte Creek. 1414 Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  JEPS87430  Montia fontana Vernon H. Oswald and Lowell Ahart 1993-3-24 5244 Butte 2 mi n of Pentz Road (e side of Canyon n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 262 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CAS-BOT-BC233762  Montia parvifolia Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC445136  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek Road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock 609 Comment
  SEINET10572727  Montia saxosa Mary Susan Taylor 1976-4-24 Taylor 1070 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC113395  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  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
  JEPS95025  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  JEPS98275  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 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
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 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
  UCD87063  Muhlenbergia rigens L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC31165  Myosurus apetalus var. borealis M. S. Taylor; J. D. Jokerst 1980-3-28 2401 Butte In and around vernal pools, jst e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CAS-BOT-BC83267  Myosurus minimus Lowell Ahart 1982-4-29 3389 Butte Gray Lodge, about 12 miles southwest of Gridley. Near the sign in station. 35 Comment
  CHSC58675  Myosurus minimus subsp. minimus M. Bailey 1991-4-21 Butte Bottom of drainages, Butte Community College campus. Drainages located atop a ridge north of Wallis Ponds and east of Williams Road, ca 1/4 mi north of Pentz Road. 121 Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  CHSC54376  Nassella pulchra M. Bailey 1991-4-14 562 Butte Butte College campus. On foothills se of Steamboat Rock, in the vicinity of a drainage near the Butte Campus boundary. 144 Comment
  CAS-BOT-BC60374  Nasturtium officinale Lowell Ahart 1980-5-12 2258 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC60375  Nasturtium officinale Lowell Ahart 1989-5-23 6239 Butte North of the new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road. 76 Comment
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  CHSC37313  Navarretia divaricata subsp. vividior L. Ahart 1982-6-4 3533 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC45755  Navarretia filicaulis L. P. Janeway 1987-6-13 2195 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  JEPS18126  Navarretia filicaulis Rimo Bacigalupi with Howard Whisler 1957-7-26 6043 Butte along the Humbug Road 3.1 mi s of and below Nimshew (roadside cut in serpentine (same formation as that at Magalia-where this reaches the e side of Butte Canyon)) 365 Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  CHSC38600  Navarretia heterandra Vernon Oswald 1983-5-22 531 Butte Upper Bidwell Park, Chico, along the n side of Horseshoe Lake. 100 Comment
  JEPS104465  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  SEINET10496825  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1590 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC26882  Navarretia leucocephala M. S. Taylor 1974-4-20 182 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  SEINET10969163  Navarretia leucocephala Mary Susan Taylor 1974-4-20 Taylor 182 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  UCD169102  Navarretia prostrata Ramona Robison 2013-4-15 23 Butte Clay Pit State Vehicular Recreation Area. In disturbed vernal pool located in main riding area. 41 Comment
  SEINET10496835  Navarretia pubescens Mary Susan Taylor 1980-5-31 Taylor 2758 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC33128  Navarretia subuligera J. D. Jokerst 1981-5-11 1310 A Butte Top of Doe Mill Ridge. 457 Comment
  CHSC88072  Navarretia tagetina R. D. Fischer 2004-6-6 158 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the 10 Mile House Road parking area off Hwy 32, on ridge. 464 Comment
  UC196275  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  SEINET10902898  Navarretia tagetina Mary Susan Taylor 1978-5-7 Taylor 1597 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC196271  Nemophila heterophylla A. A. Heller 1914-3-19 11216 Butte Canyon of Big Chico Creek 76 Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  CHSC112214  Nemophila pedunculata Lowell Ahart 2013-4-20 18564 Butte Near fence corner, on the northeast corner of the intersection of La Porte Road and Dunstone Drive, about 2 1/2 miles (air) northeast of Honcut. 36 Comment
  CHSC45932  Nemophila pedunculata Lowell Ahart 1975-3-18 713 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC27227  Nerium oleander P. Moyer 1971-10-8 40 Butte CSUC Campus. W front of Bldg. 'A'. 60 Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 Comment
  CDA5775  Nicotiana acuminata var. multiflora T. C. Fuller 1959-10-2 Butte Feather River drainage, Robinson Street, just west of Marysville Road, Oroville. 0 Comment
  CHSC49437  Nicotiana glauca Vernon Oswald 1987-5-3 2371 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC105957  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  SEINET10535890  Nymphaea odorata Mary Susan Taylor 1977-10-10 Taylor 1517 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  POM195804  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. 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
  SEINET10529930  Onychium densum Mary Susan Taylor 1976-4-24 Taylor 1075 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  CHSC115330  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 Butte On the north side of Rim Road, about 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. 830 Comment
  JEPS26743  Orobanche fasciculata P. C. Hutchison 1961-6-9 2095 Butte Canyon of the north fork of the Feather River along highway US, 1 mile south of (above) Pulga Bridge. Comment
  CAS-BOT-BC500247  Orobanche uniflora subsp. occidentalis Lowell Ahart 1965-4-11 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  JEPS119925  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  POM44309  Orthocarpus attenuatus C. C. Bruce 1897-1 2087 Butte Iron Canyon Comment
  RSA31738  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  RSA189381  Orthocarpus erianthus L. S. Rose 1967-5-6 67054 Butte Oroville. 52 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 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
  CAS-BOT-BC254367  Oryza sativa Willis H. Wheeler 1945-10-12 s.n. Butte Richvale Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC20516  Oxalis rubra M. S. Taylor 1975-6-25 808 Butte In lawns, 1456 Arcadian, Chico. 60 Comment
  CAS-BOT-BC316889  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1963-6-2 63067 Butte north fork of the Feather River, 2 mi south of Pulga 579 Comment
  CAS-BOT-BC316895  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37555 Butte Magalia 731 Comment
  CHSC39671  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  JEPS109973  Packera eurycephala var. lewisrosei Dean W. Taylor 2004-6-17 19111 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CHSC1178  Paeonia brownii V. Holt 1941-4-2 Butte Forest Ranch. 548 Comment
  CDA32009  Panicum acuminatum var. acuminatum L. Ahart 2009-6-3 15832 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 Comment
  RSA724880  Panicum acuminatum var. acuminatum L. Ahart 2006-9-11 13307 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
  CHSC37106  Panicum capillare L. Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC43275  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Road gutter, along Highway 70 about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  CHSC112934  Parentucellia viscosa B. Castro 2012-6-21 1930 Butte Sacramento Valley. CA 3 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road 42 Comment
  CHSC90964  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  JEPS98409  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte 7 1/4 air mi W of Oroville (S margin Thermalito Afterbay, N side of the poor dirt road, just W of the Cottonwood tree, 1/8 mi N of the Richvale Hwy, 3/4 mi E of Hwy 99) 42 Comment
  SEINET516425  Parvisedum pumilum Lowell Ahart 1983-1 3932 Butte Normal size plant, growing on dry poor thin soil, about 1/2 mi NE of Hwy 99 & Pentz Rd. 61 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA754385  Paspalum dilatatum L. Ahart 2009-7-3 15993 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC39528  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC73765  Paxistima myrsinites B. Castro 1997-6-13 737 Butte Mtn House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road, in depression by creek. 1051 Comment
  CHSC108988  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  JEPS117143  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 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
  UC725511  Pedicularis densiflora A. A. Heller 1939-3-23 15358 Butte Paradise Comment
  CHSC84417  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 mile (air) southwest of the Sly Creek Reservoir Dam. 996 Comment
  JEPS116138  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte 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
  CAS-BOT-BC69337  Pellaea brachyptera Lowell Ahart 1982-6-4 3539 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 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
  UC1605504  Pellaea mucronata var. mucronata T. A. Ranker and P. G. Trapp 1994-6-17 1623 Butte s of Paradise (Pence Rd, along pipeline below Kunkel Reservoir); Cherokee Quadrangle 7.5 min topo. map 395 Comment
  JEPS34384  Penstemon azureus Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8860 Butte 0.75 mi s Pulga (above side road off U.S. highway 40 in canyon of the N Fk Feather River, just before bridge across Feather River, northern base grade over Jarbo Gap); canyon of N Fk of Feather River, grade Jarbo Gap 426 Comment
  POM252806  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 miles from Oroville on Feather River Hwy. Comment
  SEINET10865355  Penstemon azureus var. azureus Heidi H. Schmidt 1993-6-15 Schmidt 868 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
  RSA402136  Penstemon laetus subsp. leptosepalus H. F. Copeland 1931-6-10 s.n. Butte Jonesville. Rocky crest between Willow and Colby creeks. Comment
  CHSC107592  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC62138  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-23 4398 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
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  RSA4118  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  CHSC29402  Penstemon newberryi R. A. Schlising 1980-6-10 3672 Butte Along Humboldt Road, 1.9 mi ne of jct with Hwy32 at Loma in n part of county. 1356 Comment
  NY627345  Penstemon newberryi var. newberryi A. A. Heller 1942-5-8 16448 Butte A few feet from the Plumas County line along State Highway 24. Comment
  CHSC42022  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SEINET12331900  Penstemon personatus L. Ahart, Ahart, P. 1984-1 4671 Butte about 1/2 mi E of Bald Mtn, about 5 mi NE of Stirling City 1900 Comment
  CAS-BOT-BC239450  Penstemon rydbergii var. oreocharis H. F. Copeland 1920-8-12 126 Butte Beside Butte Creek 1676 Comment
  UC102996  Penstemon rydbergii var. oreocharis Mrs. R. M. Austin 1899-7-1 232 Butte Colby Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  SBBG47401  Pentagramma pallida J. T. Howell 1962-6-16 37618 Butte Nelson Bar 213 Comment
  CHSC29014  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-4 2447 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  HSC23499  Pentagramma triangularis M. Gregg 1966-3-7 30 Butte On Humbug Rd. off the Skyway to the covered bridge, on hill directly behind the old covered bridge, about 9 mi. from CSC campus Comment
  CAS-BOT-BC77175  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi N of jct. of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC101286  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  UC1609371  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS107522  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  RSA0116107  Perideridia lemmonii Lowell A. Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC41892  Perideridia parishii subsp. latifolia Lowell Ahart 1986-8-15 5387 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  CHSC26610  Persicaria amphibia M. P. Hayes 1977-9-24 118 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). In ditch along edge of road. 30 Comment
  CAS-BOT-BC418955  Persicaria lapathifolia Lowell Ahart 1987-7-3 5766 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS124338  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC419180  Persicaria maculosa Herbert L. Mason; Verne Grant 1946-9-4 13111 Butte 833 Canal, West Gridley Road Comment
  CHSC96551  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  SBBG17322  Petrorhagia dubia M. Vincent 1962-4-17 201 Butte Pentz and Nelson Bar Rds, 5 mi S of Paradise Comment
  CAS-BOT-BC134036  Phacelia cicutaria var. cicutaria M. S. Taylor; K. Tharp 1983-3-11 5228 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CHSC110127  Phacelia cicutaria var. cicutaria L. P. Janeway 2012-3-21 10797 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  RSA325026  Phacelia cicutaria var. cicutaria L. Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  CHSC40034  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On a steep gravelly slope about scattered shrubs on the Feather River Highway 23 miles from Oroville. Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  CHSC118390  Phacelia egena Tim Kask 2015-2-18 225 Butte Antelope Creek, upstream from Fischer CG. 10T 0595755/4455054 Comment
  CDA13303  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1996-7-9 13151 Butte Plumas National Forest; along USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  UC175560  Phacelia imbricata A. A. Heller 1913-6-6 10786 Butte 8 mi n Oroville; Table Mountain 182 Comment
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  SEINET13095392  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte 2 miles west of Arch Rock Tunnel. Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CHSC6109  Phalaris caroliniana A. R. Jaegel 1968-4-19 143 Butte 2 mi s of Cherokee in field (3/4 mi w of 1st gate at top of Table Mountain, gate about 1 mi from Oregon City cutoff on Cherokee Rd.). Comment
  UC203841  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 mi n Oroville Comment
  JEPS104010  Phalaris minor Lowell Ahart 2003-6-16 10286 Butte On the e side of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  CAS-BOT-BC250701  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC38841  Phalaris paradoxa Vernon Oswald 1983-5-31 591 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. opposite the Parking Area G (0.1 mi w of the power lines). 97 Comment
  SEINET10716720  Phalaris paradoxa K. Bridwell 1978-5-25 Bridwell 111 Butte Ungrazed rangeland, ca. 300 yds S of Pentz Rd., ca. 3 mi E of intersection with Hwy 99, ca. 12 mi SE of Chico. Annual Grassland 76 Comment
  UC880606  Phlox speciosa Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  CHSC23137  Phoradendron libocedri M. S. Taylor 1976-2-22 997 Butte Ca. w mi n of Cohasset, ca. 10 ft e of Cohasset Rd. Comment
  CHSC110330  Phyla nodiflora var. nodiflora B. Castro; Margie Graham 2006-8-24 1603 Butte Sacramento Valley. Ca 1.8 mi W of Hwy 99 and 1 mi E of Richvale, 0.25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft in from toe of E levee. 32 Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  CAS-BOT-BC434418  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte Along the road (La Porte Road) about 4 miles north-east of Bangor 304 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
  SFV11547  Pickeringia montana M. L. Vincent 1963-6-10 418 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC82229  Pilularia americana Lowell Ahart 2002-4-14 9482 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  POM220654  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC28693  Pinus ponderosa M. S. Taylor 1978-9-9 1914 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  RSA323805  Pinus ponderosa K. R. Fechko 1982-4-11 2 Butte North east part of the county, approx. 1.8 miles south of Tehama county line on west side of Cohasset Road. 976 Comment
  CHSC27191  Pinus sylvestris P. Moyer 1971-10-8 41 b Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  SEINET10872492  Piperia elegans Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4051 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC103950  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  CHSC100465  Pistacia atlantica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15424 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  UC179491  Plagiobothrys canescens A. A. Heller 1914-4-6 11267 Butte 8 mi n Oroville Comment
  UC196320  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte low hills 8 mi n Oroville Comment
  CHSC46344  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-23 6238 Butte Along the edges of a small stream, 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
  JEPS117191  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte On damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  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
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  CHSC11862  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  HSC32416  Plagiobothrys nothofulvus Kitsy Kelly 1974-4-20 30 Butte Table Mtn. Volcanic area Comment
  SEINET10497555  Plagiobothrys nothofulvus Lowell Ahart 1985-5-10 Ahart 4955 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) 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
  CHSC90480  Plagiobothrys stipitatus var. micranthus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11665 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte West side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 396 Comment
  SEINET10781221  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 Ahart 16819 Butte T18N, R4E, southeast 1/4 Section 21. Large size plants, on dry red rocky clay soil, bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. Foothill Woodland. 48 Comment
  SBBG128250  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-6-9 16786 Butte ca. 100 yards W of a fence, ca. 0.5 mi S of the improved parking area and Cherokee Rd, N Table Mtn, ca. 5.5 mi NE of Oroville 398 Comment
  CHSC82434  Plantago coronopus Lowell Ahart 2002-5-7 9642 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
  HSC86822  Plantago coronopus Lisa Sedlacek 1978-4-18 15 Butte 25 yds. down from junction Hwy. 99 and Broyles Rd., NW corner of Butte County 61 Comment
  CHSC58272  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte Growing on the south side of the spillway of Oroville Dam, on the east side of Oroville Dam. 274 Comment
  CHSC41133  Plantago erecta B. Anthony 1967-4-9 43 Butte Bare Hole, along Yahi Trail, Bidwell Park, Chico. 1828 Comment
  CHSC47467  Plantago erecta Lowell Ahart 1980-5-4 2202 Butte Growing about 150 feet south-west of the intersection of Forbestown Road and Hurleton. 548 Comment
  CHSC52100  Plantago erecta Evelyn Jo Baker 1984-2-28 5 Butte W side of Cohasset Rd., 100 yds n of Richardson Springs Road, ne of Chico. Comment
  UC1125625  Plantago erecta C. G. Albertus 1933-5-29 6 Butte 1.5 mi n Wick; Chico Quad. Comment
  UCSC008326  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  CHSC77991  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC80670  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS118034  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 58 Comment
  SEINET10470062  Platanthera dilatata var. leucostachys Mary Susan Taylor 1978-1 Butte Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W 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
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  SEINET12318335  Plectritis ciliosa K. D. Johnson 1978-1 19 Butte on NW side of Neal Rd, 3.1 road mi SW of intersection with Skyway, Paradise 305 Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  CHSC2457  Plectritis macrocera R. Carter 1965-3-13 159 Butte Found on North Table Mt. ca. 27 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CAS-BOT-BC458150  Pleuricospora fimbriolata E. B. Copeland 1920-4-2 209 Butte Jonesville 1219 Comment
  SEINET10449168  Pleuricospora fimbriolata Mary Susan Taylor 1980-8-2 Taylor 3210 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CDA2388  Poa annua L. Ahart 2003-3-31 10031 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC56638  Poa annua J. Boze 1982-5-6 423 Butte In backyard garden area. End of Michal Way, ca 1.5 mi east of Hwy 99 off of Eaton Road. Comment
  CHSC59054  Poa annua Lowell Ahart 1992-7-21 6823 Butte Along Coon Hollow Creek, east of the logging road, about 2 1/2 miles (air) north-east of Philbrook Reservoir. 1706 Comment
  SEINET10593496  Poa annua Isle 1969-4-18 ISLE 352 Butte About 30 yards S. of the Pentz-Magalia HW-Pentz Road intersection off the W. side of the Pentz-Magalia HW. 213 Comment
  CAS-BOT-BC255687  Poa bolanderi Lowell Ahart 1985-7-16 5147 Butte Near Willow Creek, about 4 miles E of Cherry Hill, about 7 miles NE of Butte Meadows 1828 Comment
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  SEINET10934988  Poa bulbosa Mary Susan Taylor 1982-5-2 Taylor 4386 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UC1609249  Poa palustris Lowell Ahart 1993-6-26 7014 Butte ca 1/4 mi w Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC85416  Poa secunda subsp. secunda John Dittes 1992-5-5 466 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
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  CHSC110469  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  CHSC41188  Poa sierrae J. D. Jokerst 1984-6-4 2043 Butte Ca 100 meters east of Camp Creek. Canyon of the North Fork Feather River. 975 Comment
  SEINET10508318  Poa tenerrima Lowell Ahart 1983-4-10 Ahart 3930 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  POM70306  Pogogyne douglasii Edward Palmer 1892-6-7 2078 Butte Near Chico. Comment
  CHSC7065  Pogogyne zizyphoroides L. Kimbley 1969-5-4 5 Butte Ca. 300 yds. ne of Chico Airport, 4 mi n of Chico. Comment
  CHSC46498  Polygala cornuta Lowell Ahart 1989-5-31 6334 Butte On the west side of a small stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC64124  Polygala cornuta B. Castro 1987-9-12 220 Butte Ca 50 ft up from N edge of Butte Ck ca 0.4 mi S of the Ponderosa Way bridge, ca 0.3 mi S on the Butte Creek Trail. 609 Comment
  SEINET10493883  Polygala cornuta Mary Susan Taylor 1978-7-21 Taylor 1798 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  RSA699537  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek west of 10 Mile House Road where road and creek are closest. 198 Comment
  RSA718791  Polygala cornuta var. cornuta L. P. Janeway 2006-6-25 8698 Butte Northern High Sierra Nevada: Along a major dirt road 2.6 km south of Stirling City toward West Branch Feather River crossing 1006 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
  CHSC46195  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1913 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CHSC51108  Polygonum bidwelliae Gerald A. Winter 1989-4-15 17 Butte Ca. 5 yds s of Humboldt road, .5 mi e of Bruce Road between the 8th and 9th telephone pole, 33 yds from the latter, e Chico. 76 Comment
  RSA489570  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of Hwy 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico. 610 Comment
  CHSC28773  Polygonum bolanderi J. D. Jokerst 1979-9-22 355 Butte 50 yds. N. of Humboldt Rd., 2.0 mi. N.E. of intersection with Hwy. 32. 1371 Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks 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
  JEPS115374  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC113481  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC39134  Polygonum douglasii subsp. douglasii R. A. Schlising; K. Tarp 1983-8-12 4434 Butte N part of county, road to Philbrook Reservoir, at West Branch of the Feather River. Roadside, in the open. Comment
  CHSC45100  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  UC1101175  Polygonum hydropiperoides Herbert L. Mason and Verne Grant 1946-8-14 13027 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  SEINET10479659  Polygonum parryi Mary Susan Taylor 1986-5-6 Taylor 5618 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  JEPS88546  Polygonum persicaria Vernon H. Oswald and Lowell Ahart 1996-7-22 8097 Butte U.S. Fish and Wildlife Service Parcel between 7-Mile Lane and Sacramento River (edge of public access parking lot on 7-Mile Lane, adjacent to se corner of Tract 2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  POM22456  Polypodium californicum E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  CHSC46173  Polypodium calirhiza Lowell Ahart 1974-3-18 327 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS104148  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 334 Comment
  UC150454  Polypodium calirhiza Dr. E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  SEINET10899872  Polypodium glycyrrhiza Mary Susan Taylor 1979-10-13 Taylor 2270 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CAS-BOT-BC232964  Polypogon australis Lowell Ahart 1979-6-9 s.n. Butte 2 miles SE of Paradise, near Kunkle Creek 500 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC39324  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC71218  Polypogon monspeliensis Lowell Ahart 1998-6-9 7991 Butte About 200 yards southwest of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC237453  Polypogon viridis Lowell Ahart 1980-9-10 2638 Butte 5 miles E of Milsap Bar 1200 Comment
  CHSC34678  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC50016  Polystichum imbricans subsp. imbricans Lowell Ahart 1990-3-19 6418 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC61291  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte On the east side of Pinkard Creek, about 1 1/2 miles north-west of Lewis Flat, about 1 3/4 miles north-west of the Sly Creek Dam. 1097 Comment
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  RSA724943  Polystichum imbricans subsp. imbricans L. Ahart 2006-10-8 13442 Butte Steep area about 10 yards below and on the southwest side of Highway 70, east of the north Fork of the Feather River, about .5 mile north of Cresta Power house. 610 Comment
  CHSC51864  Porterella carnosula L. P. Janeway; R. A. Schlising 1988-7-16 3034 Butte Vernal pool next to Humbug Summit Rd ca 0.8 mi W of Butte Creek House. 1805 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  UC1564777  Potamogeton gramineus V. Oswald and L. Ahart 1989-6-27 3832 Butte 3.3 air mi se of Jonesville (Humbug Road at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CHSC80726  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 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
  CHSC33656  Potamogeton natans R. Schlising; J. Fuller, M. Merryman, K. Tarp 1981-7-28 4175 Butte N of Inskip in NE part of county; Coon Hollow; in pond. 1752 Comment
  JEPS88536  Potamogeton nodosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8090 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at sw corner of Tract 3.2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  UC1100069  Potamogeton nodosus Herbert L. Mason, Verne Grant 1946-8-14 13042 Butte Butte Sink Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  CHSC46277  Potamogeton pusillus var. pusillus Vernon Oswald 1989-5-19 3779 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 pond in an old channel of the Sacramento River. 45 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
  UCR190829  Potentilla glandulosa Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  RSA4662  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  UC398922  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  JEPS124141  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. Comment
  CHSC110113  Prunus dulcis L. P. Janeway 2012-3-6 10790 Butte Sacramento Valley. Oroville; south side of the Feather River just northwest of Centennial Park. At north edge of bicycle trail along north slope of the levee, at top of steep bank down to the river. 49 Comment
  CAS-BOT-BC159920  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  POM196545  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville. 1524 Comment
  UC2026867  Prunus ilicifolia subsp. ilicifolia Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  RSA595071  Prunus persica var. persica J. T. Howell 1976-7-14 51816 Butte Feather River Canyon Hwy, just E of Jarbo Gap SW of Bucks Lake on road to Oroville. 640 Comment
  CAS-BOT-BC356393  Pseudognaphalium beneolens Lowell Ahart 1983-9-17 4435 Butte Below the dirt road and about 2 1/2 miles south of Stirling City 1100 Comment
  JEPS118066  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CAS-BOT-BC356954  Pseudognaphalium canescens John Thomas Howell 1976-7-14 51811 Butte Feather River Canyon Highway, just east of Jarbo Gap 640 Comment
  CHSC42465  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS117185  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road 125 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC29706  Psilocarphus brevissimus var. brevissimus J. D. Jokerst 1980-5-28 790 Butte Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC39544  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1983-6-6 4030 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  UCD135291  Psilocarphus oregonus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  SFV10343  Psilocarphus tenellus M. L. Vincent 1963-6-8 403 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  SEINET10474855  Psilocarphus tenellus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4042 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC148606  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  CHSC108977  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CAS-BOT-BC72551  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch 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
  CHSC29096  Pteridium aquilinum var. pubescens M. S. Taylor; J. D. Jokerst 1980-4-27 2549 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC2418  Pterospora andromedea R. Carter 1965-6-21 258 Butte Found along E side of Oroville-Quincy Rd. 1.05 mi. S of Buckeye Water Hole, growing ca. 15' from road. 1219 Comment
  UC436292  Pterospora andromedea E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  POM183147  Pteryxia terebinthina var. californica H. F. Copeland 1930-7-26 1310 Butte Neighborhood of Jonesville. 1677 Comment
  CAS-BOT-BC239826  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  SEINET10959744  Puccinellia simplex Lowell Ahart 1982-4-29 Ahart 3396 Butte Normal size. On white alkali bare soil near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common only in the bare alkali areas; uncommon in this area. 35 Comment
  CHSC100487  Pyracantha fortuneana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SBBG28969  Pyrola asarifolia E. B. Copeland 1931-7-1 Butte Jonesville 1500 Comment
  CHSC73418  Pyrola asarifolia subsp. asarifolia B. Castro; L. Gehrung 1995-6-20 576 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in moist N-trending ravine, S of sharp bend in USFS Rd 22N24. 1173 Comment
  CHSC48678  Pyrola dentata Vernon Oswald 1983-7-26 916 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC474252  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville Comment
  RSA0083378  Pyrola picta H. F. Copeland 1930-7-21 1325 Butte Jonesville. Back of hotel. 1676 Comment
  CHSC108797  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CHSC47412  Quercus Lowell Ahart 1976-9-1 996 Butte On the west side of North Hpncut Creek, Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut. 60 Comment
  UC338404  Quercus Lemmon Butte Bidwell's Comment
  CAS-BOT-BC104151  Quercus X morehus L. R. Abrams 1918-8-1 7244 Butte Las Plumas Comment
  CHSC109102  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS46211  Quercus X morehus W. I. Follett 1934-7-8 Butte Bidwell Bar Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  UC1174971  Quercus berberidifolia P. C. Everett and E. K. Balls 1959-10-20 23907 Butte 8.6 mi ne Chico (along State Hwy 32, toward De Sabla) 487 Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  JEPS113189  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  UC2026891  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18119 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking Area, Lower Bidwell Park, Chico. Comment
  CDA20378  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  JEPS113133  Quercus douglasii Lowell Ahart 2007-3-28 13600 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  CHSC27865  Quercus durata var. durata K. Bridwell 1978-4-22 101 Butte Along Skyway, ca. 3 mi ne of Magalia. 762 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  CHSC33324  Quercus kelloggii P. Reynolds 1980-4-12 19 Butte Corner of 4th street and Ivy, in the City of Chico. 70 Comment
  CHSC34806  Quercus kelloggii M. S. Taylor 1980-5-8 2611 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10431579  Quercus kelloggii M. J. Williams 1967-4-22 s.n. Butte Near Feather Falls. 457 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
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC29054  Ranunculus aquatilis var. hispidulus R. A. Schlising 1980-4-2 3541 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay; in ditches. Comment
  CHSC8744  Ranunculus aquatilis var. hispidulus S. Chulasmai 1966-5-20 43 Butte Horseshoe Lake. Comment
  CHSC3847  Ranunculus arvensis L. E. Dunkel 1965-4-20 24 Butte Along Cohasset Road ca. 1/2 mi. n of Chico Municipal Airport entrance gate. 33 Comment
  CHSC1476  Ranunculus canus Edna Caufield 1904-4-1 Butte Richardson Spring Road. 83 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
  SEINET10535965  Ranunculus canus Mary Susan Taylor 1980-4-1 Taylor 2426 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  CHSC50056  Ranunculus hebecarpus Lowell Ahart 1990-3-19 6421 Butte At the base of banks along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  POM99305  Ranunculus hystriculus C. C. Bruce 1897-02 1891 Butte Little Chico. Comment
  CHSC29047  Ranunculus muricatus R. A. Schlising 1980-4-14 3566 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. In ditch at s end of area. Comment
  CHSC29233  Ranunculus muricatus M. S. Taylor 1980-4-1 2416 Butte Drainage, between Notre Dam Blvd and Hwy 99, and the Skyway and Humboldt Rd, just e of Chico. 70 Comment
  UC478516  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  UC726362  Ranunculus occidentalis A. A. Heller 1919-5-18 13181 Butte between Appleton and Coutolenc; Mosquito Creek 609 Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. Comment
  CHSC28005  Ranunculus occidentalis var. occidentalis M. S. Taylor 1978-7-21 1829 Butte On s side of Oroville-Quincy Hwy along meadow and creek, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC65207  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  POM136612  Rhamnus ilicifolia A. A. Heller, H. E. Brown 1902-5-10 5522 Butte Berry Canyon (Near Clear Creek). Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  CHSC37506  Rhamnus tomentella subsp. tomentella J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1681 Butte Table Mountain. Occasional scattered individuals along the west edge of the mesa just north of where Flag Canyon ends in a waterfall. 396 Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  UC1093997  Rhamnus tomentella subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia 731 Comment
  UC175334  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10753 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  CAS-BOT-BC199746  Rhododendron occidentale var. californicum Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine Crks. 609 Comment
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  JEPS117275  Rhus trilobata Lowell Ahart 2010-5-14 16674 Butte On the south side of the Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 301 Comment
  UC203616  Rhus trilobata A. A. Heller 1914-3-19 11212 Butte canyon of Big Chico Creek 76 Comment
  CHSC59014  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte On the west side of Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC96970  Rhynchospora capitellata Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville. 1024 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
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC1658  Ribes inerme var. klamathense T. Morgue 1932-5-3 Butte Concow Reservoir. 579 Comment
  CAS-BOT-BC212669  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC212675  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville Comment
  CHSC48899  Ribes nevadense var. nevadense Vernon Oswald 1987-4-27 2344 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  CDA13286  Ribes roezlii G. F. Hrusa, T. D. Wilfred 1996-7-9 13134 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC44939  Ribes roezlii Richard Steward 1988-4-25 8 Butte Ca. 6 mi n, 1.5 mi nw of Paradise. 640 Comment
  UC1127530  Ribes roezlii P. L. Johannsen 1936-7-16 929 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  CHSC4250  Ribes roezlii var. roezlii J. E. Bowlin 1967-3-24 33 Butte 0.3 mi NW of Cresta Powerhouse, Hwy 70. Comment
  CHSC116964  Robinia pseudoacacia Matthew Forster 2013-4-9 Butte Centerville Rd., along Flumes Trail. 335 Comment
  RSA754943  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CHSC43654  Rorippa curvisiliqua var. occidentalis Vernon Oswald 1984-5-13 1186 Butte Calif. Hwy 32 at the second bridge w of Hord-Hamilton-Cana Hwy. In the bed of a slough. 39 Comment
  CHSC85157  Rorippa curvisiliqua var. occidentalis John Dittes 2003-10-8 846 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS95863  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-8-13 8155 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC35750  Rorippa nasturtium-aquaticum R. E. Preston 1982-5-19 288 Butte In stream at edge of meadow; ca. 1/4 mi n of Fall River Campground. 1028 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  JEPS110144  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  JEPS115856  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of 239 Comment
  CHSC93959  Rosa pisocarpa R. D. Fischer 2004-6-20 756 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  JEPS114899  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte bottom of an old gold mined area, about 350 yds SW of the cemetary, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  UC1862497  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 a Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1191575  Rotala ramosior Herbert L. Mason, Verne Grant 1946-8-15 13048 Butte Butte Sink, Greylodge Game Refuge, #833 Irrigation Ditch, near caretakers house Butte Sink; , Greylodge Game Refuge, #833 Irrigation Ditch Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC52468  Rubus armeniacus L. P. Janeway 1987-5-28 2119 Butte Creeklet crossing Four Trees Rd 0.2 mi up from Hwy. 70. At edge of rd. 487 Comment
  CHSC52470  Rubus armeniacus L. P. Janeway 1987-5-20 2067 Butte Turnout and seepy area on E side of Hwy 70 just S of the 'Rock House' and 0.5 mi S of Jarbo Gap. 670 Comment
  CHSC35220  Rubus glaucifolius M. S. Taylor 1981-5-5 3610 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls. 792 Comment
  CHSC37064  Rubus laciniatus L. Ahart 1982-9-29 3834 Butte Along the edge of rd and near Pinkard Creek, ca. 0.1 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  SEINET10483580  Rubus laciniatus Heidi H. Schmidt 1993-6-15 Schmidt 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC148369  Rubus leucodermis John Thomas Howell 1962-6-15 37454 Butte Magalia - Sierra Nevada 731 Comment
  SEINET5735589 Image available Rubus parviflorus Lowell Ahart, Peter Ahart 1984-1 4695 Butte About 2 mi. SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; Forbestown 700 Comment
  UCD89071  Rubus ursinus Lindsay Clark 2008-5-30 BWP 22 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 89 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CAS-BOT-BC421734  Rumex conglomeratus Lowell Ahart 1989-5-31 6331 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC111171  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. About 60 yards west of Parking Lot 14. 19 Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  CAS-BOT-BC123629  Rupertia hallii Harvey Monroe Hall 1914-7-31 9825 Butte Humboldt Road 1066 Comment
  SEINET10530982  Sabina californica A. Arthur Heller 1939-12-10 Heller 15486 Butte Neal Road 3 km above the junction with the Oroville road. 150 Comment
  UC1562014  Sagina apetala Barbara Ertter with Lowell Ahart 1986-4-13 5896 a Butte ca. 2 airmiles n.-n.e. of Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  SEINET10537603  Sagina apetala Lowell Ahart 1985-3-4 Ahart 4842 Butte At the Palermo Post Office, Palermo. Comment
  CHSC96487  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CAS-BOT-BC445726  Sagittaria latifolia Alice Eastwood 1919-9-9 s.n. Butte Chinese garden, Marysville Comment
  RSA69605  Sagittaria latifolia F. W. Peirson 1926-6-20 6759 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC45311  Sagittaria sanfordii Vernon Oswald 1988-10-25 3716 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  CAS-BOT-BC103450  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville, Kirby Meadows 1828 Comment
  CAS-BOT-BC103735  Salix exigua M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. Pennington quad. 19 Comment
  CHSC111974  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 dmile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC108835  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17883 Butte Bare areas where cobbles were removed for Oroville Dam, 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. 35 Comment
  RSA0045623  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-17 17884 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CAS-BOT-BC107830  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico on the banks of Dry Creek Comment
  UC176211  Salix gooddingii A. A. Heller 1913-4-5 10708 Butte hills n side of Feather R. above Oroville Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC7061  Salix lasiolepis Lynn R Thomas 1969-5-8 112 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  SEINET177031  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. 1700 Comment
  CHSC38665  Salix melanopsis Vernon Oswald 1983-5-22 526 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  POM107305  Salix prolixa C. C. Bruce 1898-05 2481 Butte Butte Creek. Comment
  UC446422  Salix scouleriana E. B. Copeland 1931-6-11 Butte Kirby's Meadow 1800 Comment
  CHSC13717  Salsola tragus M. S. Taylor 1974-10-11 332 Butte Abundant in weed field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC48297  Salsola tragus Vernon Oswald 1984-6-3 1249 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. Growing on a sandbar on the edge of the river. 39 Comment
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC11857  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 472 Comment
  UC478466  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville 1550 Comment
  SEINET12120678  Sanicula bipinnata C. S. Armor 1974-1 48 Butte N side of Covered Bridge on Humbug Rd, ca 3 mi E of Hwy 99, Chico 122 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  CHSC96789  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir. 637 Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  CHSC5985  Sarcococca ruscifolia M. MacArthur 1968-6-12 148 Butte NW side of Ls Bld. near the SW end, Chico State College campus. 60 Comment
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  SEINET10973486  Sarcodes sanguinea Mary Susan Taylor 1978-7-19 Taylor 1756 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  POM219177  Saxifraga californica H. F. Copeland 1928-4-3 328 Butte Canyon of Butte Creek. Comment
  UC1212526  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte vicinity of Jonesville (Lassen National Forest); Lassen National Forest 1500 Comment
  UC1602227  Saxifraga oregana H. F. Copeland 1920-7-12 358 Butte Jonesville Comment
  SEINET10483047  Saxifraga oregana Mary Susan Taylor 1977-7-15 Taylor 1406 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  RSA770096  Schedonorus arundinaceus L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CHSC84662  Schinus molle Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 ft southwest of the base of Oroville Dam. Along a drainage area below the trailer/office building. 112 Comment
  CHSC24812  Schoenoplectus acutus var. occidentalis E. L. Rilla 1976-9-18 27 Butte Freshwater Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CHSC36302  Schoenoplectus acutus var. occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4367 Butte Graylodge Waterfowl Refuge, s side of lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC66168  Schoenoplectus acutus var. occidentalis Vernon H. Oswald 1996-5-27 7656 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage on the bed of seasonal marsh at the SW corner of Tract 2, Sanc-tuary II. 33 Comment
  CHSC57152  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek bridge. 170 Comment
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  UC793848  Schoenoplectus mucronatus Margaret Bellue 1947-8-28 Butte Afton Road nw Biggs (rice field); nw of Biggs Comment
  CHSC56809  Scirpus congdonii L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2492 Butte Wet meadow along Skyway (Humbug Summit Road) ca 5 1/2 mi north of Inskip; at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  SEINET10467273  Scirpus congdonii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4754 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  UCSB63988  Scirpus microcarpus Janeway, L. 1995-8-2 Butte T22N, R6E, SE1/4 of SW1/4 of sec. 3; Soapstone quad.; head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy.; 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road 1478 Comment
  JEPS87190  Scirpus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  CHSC50662  Scleranthus annuus subsp. annuus Lowell Ahart 1990-6-16 6515 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC6733  Scribneria bolanderi V. Hagaman 1968-4-19 485 Butte Table Mt. Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  CHSC101828  Scutellaria californica Lowell Ahart 2009-5-23 15762 Butte South of a small drainage, about 30 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 northeast of Chico. 381 Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC21279  Scutellaria tuberosa M. S. Taylor 1974-4-20 184 Butte On Cohasset Ridge, ca. 1 mi n of Richardson Springs. 274 Comment
  CAS-BOT-BC240054  Secale cereale Lowell Ahart 1987-5-6 5571 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  SFV1575  Sedella pumila M. L. Vincent 1962-4-15 192 Butte Sierra Nevada Skyway. 4 miles west of Paradise, overlooking Butte Canyon. 215 Comment
  SBBG17106  Sedum spathulifolium M. Vincent 1962-4-18 211 Butte near Feather River at Hells Town Comment
  SEINET10449687  Sedum spathulifolium Mary Susan Taylor 1975-4-29 Taylor 546 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC100795  Selaginella hansenii Lowell Ahart; John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 335 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC96139  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  SEINET10470991  Selaginella hansenii A. Arthur Heller 1902-5-6 Heller 5466 Butte Berry Canon, near Clear Creek. Comment
  SEINET10530437  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2330 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  UCD135989  Selaginella wallacei L. Ahart 1973-12-28 293 Butte Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut, about 12 miles south of Oroville, along North Honcut Creek. 45 Comment
  CHSC86442  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 94 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC364270  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along 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-east of Feather Falls 914 Comment
  POM219439  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. 1550 Comment
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC113120  Sequoiadendron giganteum Lowell Ahart 2013-10-26 19206 Butte On the east side of the Bald Mountain Lookout, Bald Mountain. 2066 Comment
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Jul 25 2018
  CHSC40469  Sericocarpus oregonensis Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  CDA31831  Sesbania punicea C. Owens 2010-7-2 s.n. Butte Oroville Wildlife Area, adjacent to the Feather River. 0 Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC95998  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley. Shallow arm of Thermalito Afterbay, 150 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  UC861927  Sibbaldia procumbens A. A. Heller 1917-7-29 12871 Butte summit above Jonesville 2133 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC37439  Sidalcea asprella R. A. Schlising; J. D. Jokerst 1982-6-4 4286 Butte N of Oroville and n of Jarbo Gap along Hwy 70. Comment
  CHSC89485  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trail and Pine Trail. At edge of small seep. 396 Comment
  RSA755757  Sidalcea calycosa subsp. calycosa L. Ahart 2009-5-23 15764 Butte West side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, bout 10 miles northeast of Chico. 382 Comment
  CHSC26820  Sidalcea diploscypha M. S. Taylor 1978-5-7 1617 Butte Scattered around Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  CHSC45942  Sidalcea diploscypha Lowell Ahart 1978-5-16 1735 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC34952  Sidalcea gigantea R. A. Schlising; C. A. Lawler 1981-8-8 4190 Butte Near N end of Concow Reservoir. Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  POM61858  Sidalcea hirsuta A. A. Heller, H. E. Brown 1902-5-15 5557 Butte Near Biggs. Comment
  SBBG71471  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 mi N of Chico Comment
  POM84693  Sidalcea robusta C. C. Bruce 1898-05 s.n. Butte Little Chico Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC36430  Silene bernardina R. A. Schlising; K. Tarp, R. Banchero, J. Fuller 1981-7-19 4155 Butte E of Stirling City, E of Bald Mountain, and SW of Crane Valley. 1584 Comment
  CHSC55053  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte Near where the two branches of Wildcat Creek come together, about 2 miles north-west of Four Trees, about 2 miles north-east of Coyote Gap. 1219 Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  CHSC35043  Silene gallica C. W. Dawson 1978-4-21 19 Butte 1.5 mi s of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy. at top of ridge. 335 Comment
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  SEINET10537535  Silene gallica Mary Susan Taylor 1982-5-2 Taylor 4390 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC4084  Silene laciniata subsp. californica E. P. Parreno 1967-4-17 Butte Upper Bidwell Park ca. 1 mile from Salmon Hole. Comment
  CHSC42228  Silene laciniata subsp. californica Beth Chambers 1986-4-18 15 Butte N on Cohasset Rd., 13.8 mi from Eaton Rd., Chico. 853 Comment
  SFV1219  Silene laciniata subsp. californica M. L. Vincent 1962-4-16 198 Butte Pentz Road. Small reservoir 0.25 miles off road, 5 miles south of Paradise. Comment
  CHSC20428  Silene lemmonii 1974-5-8 Butte Feather River Canyon. Comment
  LA204646  Silene occidentalis E. B. Copeland; 1930-7-28 635 Butte Jonesville 1550.0 Comment
  SEINET5571531  Silybum marianum H. S. Gentry, S. Koch 1962-1 19786 Butte Near Richvale. Comment
  JEPS115544  Sisymbrium officinale Lowell 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 67 Comment
  CHSC39395  Sisyrinchium bellum L. Ahart 1983-8-16 4313 Butte Near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. 1600 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
  POM109243  Smilax californica Mrs. R. M. Austin 1883-05 31 Butte Lomo. Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC87563  Solanum parishii R. D. Fischer 2004-3-28 145 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along north end of Humboldt Trail. UTM: 10609467E 4405281N. 436 Comment
  NY821111  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock creek Comment
  SEINET12319559  Solanum parishii T. R. Norton 1977-1 6 Butte ca 7.5 mi E of Chico, 3.5 mi SW of Paradise, S of Honey Run Rd 91 Comment
  SEINET7274373 Image available Solanum parishii S. Jones 29 Butte ca. 0.25 mi E of jct of Stilson Canyn Rd. and Bruce Rd.; Butte County Comment
  SEINET7262102 Image available Solanum xanti E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  CHSC11834  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  SEINET10474960  Soliva pterosperma Mary Susan Taylor 1980-4-6 Taylor 2440 A 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
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC365841  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 274 Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 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
  JEPS127027  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CHSC6086  Sonchus oleraceus B. Wilson 1968-4-17 153 Butte NE of Greenhouse, CSC campus. 59 Comment
  SEINET10970333  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3697 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC108150  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. In an open graveled area. 912 Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  UCR219097  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15574 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  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
  CHSC10664  Spergula arvensis subsp. arvensis Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC390599  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville 450 Comment
  SEINET10537506  Spergularia rubra Lowell Ahart 1983-8-16 Ahart 4309 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  SEINET10937235  Spiraea densiflora Mary Susan Taylor 1980-8-2 Taylor 3213 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC147949  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  HSC104002  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS94310  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  UC1609424  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC108744  Stachys pycnantha B. Castro; L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. 670 Comment
  UC2055635  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  UC884287 Image available Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  UC1564732  Stellaria calycantha V. Oswald and L. Ahart 1989-7-21 3874 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  CHSC34185  Stellaria crispa L. Ahart 1981-9-15 3165 Butte Along banks of French Creek, below the swamp and where the road forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  RSA0041906  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 s.n. Butte Jonesville. Comment
  CHSC41254  Stellaria longipes var. longipes S. C. Morey 1983-7-21 470 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA42900  Stellaria media L. Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 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
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC29990  Stellaria nitens L. Ahart 1980-3-26 Butte E of the cemetery, ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CHSC38306  Stellaria nitens Vernon Oswald 1983-3-4 111 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  CHSC43409  Stellaria nitens Lowell Ahart 1978-4-19 1651 Butte Along the trail to Feather Falls, about 3 miles north-west of the town of Feather Falls. 609 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  CHSC59509  Stephanomeria elata Lowell Ahart 1992-9-9 6918 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CHSC43197  Stephanomeria lactucina Robert Banchero 1981-6-29 544 Butte 1.7 air mi w of Pulga. 926 Comment
  CHSC62435  Stephanomeria paniculata L. P. Janeway 1993-9-22 4597 Butte Plumas National Forest. Canyon of North Fork Feather River; along dirt road to Bear Ranch Creek falls from Hwy 70. 487 Comment
  CHSC51359  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald; Lowell Ahart 1990-10-11 4463 Butte Spur road off of Dark Canyon Rd, leading to the opening between railroad tunnels No. 7 and No. 8, about 4 miles south of Jarbo Gap. Road cuts. 335 Comment
  JEPS121971  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  SEINET10845509 Image available Streptanthus longisiliquus Glenn L. Clifton 1997-6-13 Clifton 35529 Butte .8 km north of Robley Point at about 3080 ft. in elevation, growing on a steep cut bank of the dirt road. 939 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
  JEPS106170  Streptanthus polygaloides Lowell 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 692 Comment
  CAS-BOT-BC87434  Streptanthus polygaloides John Thomas Howell; Harvey Keith Wagnon 1980-5-26 53578 Butte Sierra Nevada. Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge. Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  JEPS108580  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of S end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km S of Kimshew Point. 1317 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  CHSC29799  Swertia albicaulis var. nitida M. S. Taylor; J. D. Jokerst 1980-6-14 2880 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC48021  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1828 Comment
  CHSC43136  Symphyotrichum ascendens Robert Banchero 1981-8-4 643 Butte Ca 1.7 mi N jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  CHSC103114  Symphyotrichum chilense Lowell Ahart 2009-8-23 16294 Butte Near small drainages, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC40562  Symphyotrichum chilense Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC69667  Symphyotrichum chilense Vernon H. Oswald 1983-6-14 688 Butte Upper Bidwell Park, Chico, beside Yahi Trail E of Brown's Hole. 207 Comment
  JEPS117382  Symphyotrichum spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC105795  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC44153  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald; Lowell Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  CHSC31613  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1977-9-24 1589 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC98372  Symphyotrichum subulatum var. parviflorum A. A. Heller 1923-10-13 13828 Butte About the rice fields near Richvale Comment
  CHSC38727  Tamarix gallica Vernon Oswald 1983-4-24 361 Butte Upper bidwell Park, Chico, on the north edge of Chico Creek 100 ft E of Parking Area H at Day Camp. 91 Comment
  CDA14069  Tauschia hartwegii G. F. Hrusa, T. D. Wilfred 1997-5-1 13717 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC1988  Tauschia hartwegii M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway. 426 Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  UC175518  Tauschia kelloggii A. A. Heller 1913-6-7 10811 Butte near Stirling; near Stirling 1074 Comment
  SEINET10904061  Tellima grandiflora Mary Susan Taylor 1981-5-14 Taylor 3709 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  UC857556  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mt. Ida ranch 10 mi e Oroville; Sierra foothills 457 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
  CHSC36700  Thysanocarpus curvipes var. curvipes Jan Rumore 1982-4-15 2 Butte Ca. 1.2 mi e of Forest Ranch, 50 ft. below top of canyon wall. Upper canyon. 670 Comment
  CHSC29732  Thysanocarpus curvipes var. elegans J. D. Jokerst 1980-4-17 591 Butte Top of North Table Mt, northern most portion. 472 Comment
  CHSC29009  Thysanocarpus radians M. S. Taylor 1980-4-4 2452 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC50657  Thysanocarpus radians Lowell Ahart 1990-4-23 6463 Butte In field, about 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  UC179686  Tofieldia occidentalis subsp. occidentalis H. M. Hall 1914-7-22 9768 Butte Willow Creek Jonesville 1554 Comment
  JEPS127013  Torilis nodosa Lowell Ahart 2016-5-24 20852 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
  CDA13332  Torreya californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13178 Butte Sierra Nevada; Small colony in shaded woods approx. 0.4 m from Hwy 162 on 22N89. Tree, approx. 10 m tall. Uncommon here. Immed. S of Rogers Cow Camp. Comment
  SFV247  Torreya californica M. L. Vincent 1964-4-10 550 Butte Feather River Canyon. 3 miles north of the village of Jarboe Gap, on alternate highway 40. 625 Comment
  JEPS104051  Torreyochloa pallida var. pauciflora Lowell Ahart 2003-8-24 10541 Butte In Butte Creek, in Butte Creek House Meadow, ca 100 yd e of the road, ca 9 mi (air) e of Butte Meadows. 1777 Comment
  CAS-BOT-BC172923  Toxicodendron diversilobum A. A. Heller 1916-4-13 12321 Butte Stilson [canon] Canyon east of Chico Comment
  CHSC29020  Toxicoscordion venenosum var. venenosum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2433 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of jct of Swedes Flat Rd and Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  UCD139875  Toxicoscordion venenosum var. venenosum Ball 1932-5-25 s.n. Butte Death Camos. Comment
  SEINET10938103  Tragopogon dubius Mary Susan Taylor 1981-5-22 Taylor 3795 Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  UC1586478  Trautvetteria caroliniensis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4740 Butte 5.75 air mi ne of Brush Creek (Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, e of Oroville-Quincy Hwy); Marble Creek, Forest Rd 23N60 1051 Comment
  UCD138328  Triantha occidentalis E. B. Copeland 1929-7-24 349 Butte Jonesville. 1550 Comment
  CAS-BOT-BC518997 </