Search Results — 2000 specimen records retrieved (1622 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC45838  Abies concolor Lowell Ahart 1984-4-26 4812 Butte South fork of Feather River, near the new bridge, about 1 mile north of Golden Trout Crossing, about 10 miles east of Feather Falls. 975 Comment
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Apr 30 2014
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC45327  Abutilon theophrasti Vernon Oswald 1987-9-7 3233 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  JEPS104311  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the w side of an irrigation ditch, on the e side of Upper Palermo Rd, ca 2 mi (air) ne of Palermo. 67 Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  CAS-BOT-BC330576  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling 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
  SEINET10453987  Acer circinatum Mary Susan Taylor 1981-5-21 Taylor 3789 Butte T23N R5E ne sec 28, Pulga quad. In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. Granite soils in shaded filtered light; Yellow Pine Forest; 1600 ft. 488 Comment
  CAS-BOT-BC331603  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CHSC81442  Acer macrophyllum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  SEINET10453992  Acer macrophyllum Mary Susan Taylor 1975-9-19 Taylor 915 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC21750  Achillea millefolium John Thomas Howell 1962-6-16 37581 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  CAS-BOT-BC217980  Achnatherum nelsonii M. S. Taylor 1981-4-10 3522 Butte 50 feet up from creek, ca. 0.25 mile N of Pine Cluster Ranch, at base of serpentine outcrop of reddish color, between Concow Rd and a large knoll, ca. 6 miles N of Jarbo Gap on Highway 70 731 Comment
  CHSC74147  Achnatherum nelsonii subsp. dorei B. Castro 1998-6-18 791 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  CHSC92276  Achnatherum stillmanii L. P. Janeway; B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly-facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  UCR187085  Achyrachaena mollis Anna M. Hurlbutt, C. R. Weeks 2007-4-26 007 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
  CAS-BOT-BC29948  Achyrachaena mollis Lowell Ahart 1970-5-12 1107 Butte Peter Ahart Ranch, near Honcut 45 Comment
  CHSC6592  Acmispon americanus var. americanus G. Estrem 1968-5-2 12 Butte Ca. 5 mi se of Chico on Skyway, ca. 100 yds. s of road in open field. Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC78146  Acmispon brachycarpus Lowell Ahart 2000-5-31 8424 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
  CHSC40419  Acmispon grandiflorus var. macranthus Lowell Ahart 1985-5-15 4982 Butte East along the dirt road, about 1/2 mile north-east of Concow Res. 594 Comment
  CHSC31960  Acmispon wrangelianus J. D. Jokerst 1979-5-2 1218 Butte Top of North Table Mountain, ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 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
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  SEINET10573363  Actaea rubra R. M. Austin Austin 275 Butte Comment
  CHSC26741  Adenocaulon bicolor M. S. Taylor 1977-8-17 1466 Butte On edge of Montane Meadow, ca. 25 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1341 Comment
  SEINET10483637  Adenostoma fasciculatum Mary Susan Taylor 1975-4-25 Taylor 494 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC24871  Adiantum aleuticum T. L. Reynolds 1976-4-23 59 Butte Small population, ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  UC440495  Adiantum jordanii Mrs. R. M. Austin 1896-5-1 242 Butte bluff of Butte Creek Comment
  UCD137231  Adiantum jordanii G. M. Trimble 1974-4-28 sc- 17 Butte 300 yards W. of Covered Bridge; ca. 100 yards above the river. 266 Comment
  CHSC110345  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 5.6 road km north of the bridge over Canyon Creek arm of Lake Oroville. 357 Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  UCR248229  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, c 2 mi south of Forest Ranch, c. 12 mi north of Chico Comment
  SEINET10572507  Agoseris Mary Susan Taylor 1980-4-18 Taylor 2508 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  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
  CHSC86134  Agoseris grandiflora John Dittes; Josephine Guardino 2002-6-21 619 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  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
  CAS-BOT-BC29616  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC29615  Agoseris grandiflora var. grandiflora Lowell Ahart 1988-6-21 6054 Butte Along Poe Power House Road, about 3/4 mi N of Poe Power House, about 1 1/4 mi SE of Jarbo Gap 426 Comment
  POM35003  Agoseris heterophylla var. heterophylla C. C. Bruce 1897-04 s.n. Butte Near Chico Comment
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  UCD80029  Agoseris retrorsa CNPS SN Foothill Team 2005-3-29 SNFN 0026 b Butte CDFG North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  SEINET10942481  Agropyron intermedium Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville. 998 Comment
  CAS-BOT-BC127331  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UCD52297  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UCD52304  Agrostis exarata August L. Hormay 1929-7-24 s.n. Butte 3 miles North of Pulga. Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC103156  Agrostis gigantea Lowell Ahart 2009-7-9 16006 Butte On the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC40448  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CAS-BOT-BC138851  Agrostis microphylla L. Ahart; P. Ahart 1983-6-26 4167 Butte Near Bean Creek Road, ca. 20 miles northeast of Oroville. 1000 Comment
  CAS-BOT-BC138773  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  CHSC94533  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC31432  Agrostis stolonifera L. Ahart 1980-7-29 2494 Butte Along the edge of Swedes Flat Rd, ca. 1.5 mi e of the Bangor-Oroville Hwy, near Bangor. 320 Comment
  SEINET10934845  Aira caryophyllea A. Arthur Heller 1914-5-6 Heller 11363 Butte Marysville. Comment
  CAS-BOT-BC138343  Aira caryophyllea var. caryophyllea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC445313  Alisma lanceolatum Lowell Ahart 1981-5-25 2837 Butte Along Central House Road, Honcut. 35 Comment
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  RSA335888  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Wet soil in low areas along Highway 70, 4.4 miles S of the Oroville Dam exit (Hwy. 126). Comment
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  UCD138462  Allium cratericola C. D. Snider 1975-4-20 25 Butte Table Mountain: 7 mi. S of Hwy 70, Cherokee Road 5 mi S of Cherokee. 0.5 mi NW of road. 381 Comment
  UCD138463  Allium cratericola M. Vincent 1961-3-27 2 Butte Table Mountain four miles south of Cherokee California. 914 Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada 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
  CHSC87430  Allium neapolitanum R. D. Fischer 2004-3-22 93 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  UCD80417  Allium peninsulare var. peninsulare CNPS SN Foothill Team 2005-5-26 SNNR 0204 Butte City of Chico, Upper Bidwell Park, off of the Guardian Trail SE of the intersection with the Humboldt Trail. 340 Comment
  CAS-BOT-BC476716  Allium validum Vernon Oswald; Lowell Ahart 1987-1-7 3046 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  RSA470050  Allophyllum gilioides subsp. gilioides H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 Comment
  CHSC35103  Allophyllum integrifolium R. Preston; R. Banchero, R. Schlising 1981-7-14 4146 Butte N part of county, ca 0.3 mi SW of Humbug Summit. 1981 Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  UC203870  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Creek Sierra Nevada, Butte Meadows (banks) 1219 Comment
  CAS-BOT-BC170915  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC113278  Alopecurus carolinianus Lowell Ahart 2014-4-26 19417 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  RSA0115343  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Lunch [Launch?] Area about 10 1/2 miles (air) northeast of Oroville. 217 Comment
  CHSC113151  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, about 30 yards west 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
  CHSC117422  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC46329  Amaranthus albus Lowell Ahart 1989-5-23 6258 Butte About 1 mile north-west of Bangor, along the edges of Avocado Road, about 1/2 west of the Oroville Bangor Highway. 213 Comment
  SEINET3125082 Image available Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  SEINET10478740  Amaranthus albus Mary Susan Taylor 1978-9-8 Taylor 1888 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC116123  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10478844  Amaranthus californicus Lowell Ahart 1990-9-30 Ahart 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC107232  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CDA3282  Amaranthus retroflexus L. Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  CHSC85442  Amaranthus retroflexus R. D. Fischer 2003-10-25 13 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 Comment
  CHSC43596  Ambrosia artemisiifolia Vernon Oswald 1987-8-24 3223 Butte Skyway 0.4 mi SW of Toadtown (between DeSabla and Lovelock). 841 Comment
  CAS-BOT-BC55583  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico Comment
  JEPS118411  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS87378  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  UCD38755  Ammannia robusta Beecher Crampton 1957-9-17 4631 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  UCD169263  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile Road House, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  UC1609217  Amsinckia eastwoodiae David Young 1983-3-20 5 Butte 4 km e of Chico (23 m w of Humbolt Rd, .8 km n of Little Chico Creek, ne corner of nw corner of Sect. 29) 99 Comment
  CHSC23470  Amsinckia intermedia J. R. Lee 1974-4-22 3 Butte 15 yds n of the Skyway roadside and 6 miles from the Chico city limits. 152 Comment
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  RSA0090971  Amsinckia intermedia C. C. Bruce 1898-03 s.n. Butte [No location data on label] Comment
  UCSB63598  Amsinckia intermedia Holloway, Steve 1986-4-18 Butte 10 m E of Humboldt Rd. 7.3 km NNE of Chico ( Hamlin Canyon Quadrangle, 7.5 minute series; NW1/4, Sec. 22, T22N, R2E) 220 Comment
  CHSC60662  Amsinckia lycopsoides Vernon H. Oswald 1993-4-24 5295 Butte Gray Lodge Wildlife Manegement Area, 0.1 mi N of Rutherford Rd in levee raod leading to Parking Lots 1, 2, and 3, ca. 0.5 mi E of Headquarters. 19 Comment
  NY622094  Amsinckia verna A. A. Heller 1913-3-9 10683 Butte Hills 2 miles North of Oroville Comment
  CHSC1388  Anagallis arvensis M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  POM33358  Ancistrocarphus filagineus C. C. Bruce 1897-06 2111 Butte Fields Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  UC426922  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville 1650 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  CHSC21146  Anthemis cotula M. S. Taylor 1975-10-3 939 Butte On sandbar in Sacramento River, ca. 5 mi W of Chico. 36 Comment
  CAS-BOT-BC137780  Anthoxanthum odoratum Lowell Ahart 1981-7-7 2915 Butte Sierra Nevada. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road. 600 Comment
  CHSC54546  Anthoxanthum odoratum Vernon H. Oswald; Lowell Ahart 1991-8-19 4834 Butte South side of Humbug Rd between Chaparral Guard Station and Memorial Spring, ca. 3.5 miles (air) southeast of Butte Meadows. 1554 Comment
  UC1609081  Anthoxanthum odoratum Lowell Ahart 1993-6-26 7013 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC38683  Antirrhinum cornutum Vernon Oswald 1983-6-3 632 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  SEINET10964533  Antirrhinum leptaleum Lowell Ahart 1990-10-5 Ahart 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 267 Comment
  JEPS87613  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek); road to Forbestown Reservoir, near Woodleaf Creek 762 Comment
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC51049  Apocynum androsaemifolium Pauleen Broyles 1987-5-21 1042 Butte Bike path N and S of Elliott Road, in Paradise. Comment
  CHSC52680  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 302 Butte E part of county, ca. 1.0 mi NE of Mountain House. 1024 Comment
  SEINET10448427  Arabis platysperma Mary Susan Taylor 1980-8-2 Taylor 3205 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  POM196111  Arabis rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  RSA718085  Arabis rectissima L. Ahart 2006-7-16 12969 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SBBG17292  Arbutus menziesii M. Vincent 1961-3-30 Butte Spense Rd near cross street Pearson Comment
  CHSC44407  Arceuthobium campylopodum Lowell Ahart 1988-6-29 6106 Butte At the intersection of Bean Creek Ranch Road and the road to the Andy Smith Ranch, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  CAS-BOT-BC409922  Arceuthobium campylopodum Lewis S. Rose 1931-1-2 s.n. Butte Bangor Comment
  CAS-BOT-BC38875  Arctostaphylos manzanita subsp. manzanita Saichi Kawahara 1968-5-4 390 Butte Paradise, James Ripley's property, Graham road. 640 Comment
  CHSC103165  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2009-11-19 16564 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 miles west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  RSA719873  Arctostaphylos manzanita subsp. manzanita Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12883 Butte Northeast of Chico along Rt. 32. Comment
  UC1094001  Arctostaphylos mewukka Lewis S. Rose 1955-6-15 55103 Butte 6 mi se Paradise (on Pentz Rd) 426 Comment
  UC726684  Arctostaphylos mewukka A. A. Heller 1942-2-7 16363 Butte along Wagstaff Rd near junction with the Neal Road; Paradise Comment
  CHSC103425  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south 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. 369 Comment
  CHSC67932  Arctostaphylos truei James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1683 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  SEINET11987499  Arctostaphylos truei Unknown 1981-1 s.n. Butte 3 mi NE of Magalia Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 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-BC47380  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51100 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47389  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6302 Butte Paradise at Berkshire Way and Bille Road just off The Skyway. Next to a bike trail. 274 Comment
  CAS-BOT-BC48298  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CAS-BOT-BC400435  Aristolochia californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  SEINET12088732  Aristolochia californica K. E. Warwick 1978-1 10 Butte 30 m. of Butte Creek at Covered Bridge, 10.2 km ESE of Chico Comment
  CHSC46448  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1989-6-27 3822 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  UC600518  Arnica dealbata H. F. Copeland 1930-7-26 13206 Butte Jonesville, on ridge above hotel Jonesville Comment
  CHSC11850  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. Open Pine Woods. 1600 Comment
  SEINET10513420  Arrhenatherum elatius Lowell Ahart 1987-5-27 Ahart 5719 Butte On dry sand, rocky disturbed soil, at the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC110044  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  SEINET10872090  Artemisia douglasiana Mary Susan Taylor 1977-10-10 Taylor 1522 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
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  RSA401660B  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Road, 3 miles northeast of Centerville Comment
  SEINET10580344  Asclepias cordifolia R. M. Austin Austin 287 Butte Little Chico Creek Comment
  SEINET10862406  Asclepias cordifolia R. M. Austin Austin 869 Butte Iron Canyon Comment
  SEINET10961630  Asclepias cordifolia R. M. Austin Austin 868 Butte Iron Canyon Comment
  CHSC44270  Asclepias eriocarpa Vernon Oswald 1988-6-4 3355 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 67 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS93860  Asclepias eriocarpa Lowell Ahart 1998-7-18 8043 Butte about 7 air mi n of Oroville (w of Cherokee Road, about 50 ft sw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CDA13891  Aspidotis densa G. F. Hrusa, T. D. Wilfred 1997-5-8 13748 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CDA10331  Aster oregonensis T. C. Fuller 1958-7-7 1912 Butte 1 mile north of Pulga Station. 0 Comment
  CAS-BOT-BC178462  Astragalus gambelianus Lowell Ahart 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC40770  Astragalus gambelianus Lowell Ahart 1985-5-10 4940 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  HSC93425  Astragalus gambelianus L. Ahart 1995-5-30 7577 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  RSA178644  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along Pacific Hwy 9 miles north of Chico. Comment
  CHSC39357  Athyrium filix-femina var. cyclosorum L. Ahart; P. Ahart 1983-9-21 4461 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC58258  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte At the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  SEINET10448433  Athysanus pusillus Mary Susan Taylor 1980-2-23 Taylor 2318 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  SEINET3930601  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, south of Parking Area 5 Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh.; 0 30 Comment
  SEINET10970745  Atriplex canescens Lowell Ahart 1991-9-6 Ahart 6713 Butte On the south side of Rutherford Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  CHSC46262  Atriplex depressa Vernon Oswald 1989-4-20 3746 Butte Gray Lodge Wildlife Area, S side of Rutherford Rd at Parking Area 5. 19 Comment
  UCD150350  Atriplex fruticulosa Lee Silvernale 1963-10-8 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC34772  Atriplex rosea Lowell Ahart 1981-11-6 3220 Butte Near the entrance to the Gray Lodge Waterfowl Mangement Headquarters, just west of Pennington Road, about 12 miles south-west of Gridley. 35 Comment
  CAS-BOT-BC176605  Atriplex serenana var. serenana A. A. Heller 1919-8-9 13350 Butte In gardens at Chico Comment
  CAS-BOT-BC146182  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  SEINET7297380 Image available Avena barbata A. A. Heller 1914-1 11207 Butte Moist places along a small stream eight miles north of Oroville, near the western base of Table mountain. 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
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CHSC8168  Avena sativa Dave Isle 1969-4-17 339 Butte Off the E. side of Bruce Road about 1 mile N. of the Bruce Rd. - Skyway intersection. 59 Comment
  CHSC45638  Baccharis douglasii Vernon H. Oswald 1987-7-23 3134 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the W end of Cana Rd. Between the S half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  JEPS121912  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville Comment
  CDA6270  Bacopa rotundifolia T. C. Fuller 1962-6-11 8947 Butte U. C. Experimental Station, 4 miles north of Biggs. 0 Comment
  CAS-BOT-BC106427  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1828 Comment
  CHSC42083  Barbarea orthoceras A. L. Quesada 1986-4-19 1 Butte Jct. of Hwy 99 and Broyles Rd, n of Chico. Field. 60 Comment
  SEINET10907330  Barbarea orthoceras Mary Susan Taylor 1981-5-14 Taylor 3730 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  CHSC43648  Barbarea verna Vernon Oswald 1987-4-22 2340 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. On the edge of the creek. 68 Comment
  CHSC21365  Berberis aquifolium M. S. Taylor 1975-4-8 454 Butte N side of Chemistry Bldg, California State University, Chico. 60 Comment
  CDA36621  Bergia texana L. Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC28459  Bergia texana R. A. Schlising 1979-10-14 3507 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  CDA42976  Bidens frondosa L. Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC34182  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Where the road forks and crosses French Creek, ca. 1 mi W of Sly Creek Reservoir. 1300 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CHSC11920  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC95181  Bistorta bistortoides R. D. Fischer 2005-6-5 824 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CAS-BOT-BC100690  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico - Oroville Road Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  CHSC35650  Boechera breweri R. E. Preston 1982-4-7 235 Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  CHSC87413  Boechera breweri subsp. shastaensis R. D. Fischer 2004-2-28 120 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). On outcropping overlooking canyon. 548 Comment
  CHSC33228  Boechera rectissima R. E. Preston 1981-6-17 92 Butte Ca. 30 m e of Humboldt Rd, ca. 0.8 km w of Humboldt Peak and 3.5 km ne of Jonesville. 1967 Comment
  CHSC36842  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC40384  Boykinia major Lowell Ahart 1985-7-9 5114 Butte Along the banks of 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
  SEINET10483033  Boykinia major Mary Susan Taylor 1982-8-16 Taylor 5018 Butte T24N R5E nw/nw sec 17. Pulga NW quad. S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. Riparian; 4700 ft. 1432 Comment
  CDA15368  Boykinia occidentalis G. F. Hrusa 1997-5-29 13796 Butte Sierra Nevada; Bank of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC48891  Boykinia occidentalis Vernon Oswald 1985-9-5 1939 Butte Forbestown Resevoir Rd. 1.4 mi ne of Forbestown Rd. 861 Comment
  JEPS103476  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  SEINET11970738  Brassica nigra C. A. Walker 5 s.n. Butte no further locality Comment
  CHSC56623  Briza minor J. Lund 1980-4-19 Butte On a trail leading up to the falls above Richardson Springs, northeast of Chico. 121 Comment
  JEPS107332  Briza minor Lowell Ahart 2005-4-14 11710 -A Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET10514411  Briza minor Lowell Ahart 1971-4-13 Ahart 72 Butte Ca. 1/2 typical size. Among grass and on disturbed areas. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  CHSC71465  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte On the west side of Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  JEPS107977  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  RSA256664  Brodiaea minor Dave Knorr 1974-4-20 124 Butte On Pentz Road near intersection with Clark Road. Comment
  SEINET3888972  Brodiaea multiflora Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  RSA70165  Brodiaea purdyi F. W. Peirson 1926-6-21 6767 Butte Butte Meadow, Humboldt Road. Comment
  SEINET10472684  Brodiaea purdyi Mary Susan Taylor 1980-7-6 Taylor 3085 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CDA1783  Bromus alopecuros L. Ahart 2002-5-15 9662 Butte About 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine. Comment
  JEPS106265  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
  CAS-BOT-BC156294  Bromus caroli-henrici Lowell Ahart 1984-5-31 4656 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC6676  Bromus catharticus Marilyn Lee 1968-4-16 174 Butte 1046 1/2 W. 4th St., Chico. Comment
  SEINET3823231 Image available Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18745 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  SEINET6778879  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CAS-BOT-BC162455  Bromus laevipes John Thomas Howell 1955-6-14 30459 Butte Magalia. 731 Comment
  CAS-BOT-BC162465  Bromus laevipes Lowell Ahart 1985-5-15 1471 Butte 1.5 mile northeast of Concow Res.East of the dirt road, about 1.5 mile northeast of Concow Res. 800 Comment
  UCD58918  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 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
  CHSC87950  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  UCD59068  Bromus orcuttianus G. F. Hrusa; T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx 3 mi. N of Magalia. 800 Comment
  CAS-BOT-BC161613  Bromus sterilis John Thomas Howell 1962-6-15 37493 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS97432  Bromus sterilis Lowell Ahart 1995-5-30 7576 Butte 7 mi N of Oroville (North Table Mountain, about 1/8 mi N of Cherokee Road) 335 Comment
  CHSC50850  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1990-7-19 4366 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 2011 Comment
  CAS-BOT-BC161500  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile southwest of the Forbestown Reservoir, about 3.5 miles northeast of Forbestown. 609 Comment
  CHSC41431  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile south-west of the Forbestown Reservoir, about 3 1/2 miles north-east of Forbestown. 609 Comment
  CHSC61340  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte About 2 1/2 mi NE of Bald Mountain, about 6 1/2 mi NE of Stirling City. 1584 Comment
  RSA521825  Callitriche heterophylla Vernon H. Oswald 1988-5-19 3324 Butte Portion of Rancho Bosquero; 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. 46 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  UCSC000453  Callitriche verna E. B. Copeland 1932-1 s.n. Butte Jonesville Comment
  CAS-BOT-BC80359  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC59485  Calocedrus decurrens Michael Deal 1992-4-19 4 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC2223  Calochortus albus N. Maxwell 1929-4-24 Butte Centerville Road. 152 Comment
  CAS-BOT-BC487512  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC51940  Calochortus luteus S. B. Collom 1988-4-25 13 Butte Chico; 100 uds E of 5th St bridge in Lindo Channel, on N side. Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  JEPS119588  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC492596  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte Chico-Centerville road, 8 miles from Chico Comment
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  CAS-BOT-BC273291  Calycadenia fremontii David D. Keck 1933-5-31 2408 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CAS-BOT-BC270006  Calycadenia multiglandulosa Lowell Ahart 1983-6-21 4086 Butte Found along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville 450 Comment
  CHSC46914  Calycadenia multiglandulosa Lowell Ahart 1980-6-19 2390 Butte Along the edge of Swedes Flat Road, about 1/8 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, northeast of Bangor. 304 Comment
  CAS-BOT-BC106082  Calycadenia oppositifolia John Thomas Howell 1962-6-16 37623 Butte Nelson Bar - Sierra Nevada 213 Comment
  CHSC30940  Calycadenia oppositifolia L. Ahart 1980-7-4 2448 Butte Near the Oak Grove Cemetary, ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC6141  Calycadenia oppositifolia J. Wheeler 1968-5-16 368 Butte NW side of Devil's Kitchen, Upper Bidwell Park. Comment
  CHSC62422  Calycadenia oppositifolia B. Castro 1987-5-18 110 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. Ca 100 ft above ephemeral drainage. 445 Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UC1876185  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  CAS-BOT-BC275418  Calycadenia truncata var. truncata Lewis S. Rose 1939-6-7 39250 Butte N Fork of Feather River, 3 miles S of Pulga 609 Comment
  JEPS121940  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  SEINET10863160  Calyptridium monospermum Mary Susan Taylor 1982-6-24 Taylor 4743 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
  SEINET5336314  Calyptridium paniculatum K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC30088  Calyptridium umbellatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3212 Butte Humboldt Peak, on the top. 2154 Comment
  JEPS110268  Calystegia atriplicifolia subsp. buttensis Lowell Ahart 2006-6-24 12858 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
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  CHSC63134  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1994-7-1 7442 Butte Around large rocks, on the north side of the larger pond, steep rocky slope on the north side of Henness Pass Road,at Keystone Gap, east of Keystone Mountain, about 1-1/2 miles north-east of Middlewaters, about 11 miles (air) northeast of Alleghany. 1889 Comment
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  RSA21311  Calystegia occidentalis subsp. occidentalis C. B. Wolf 1937-5-13 8656 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  CHSC44515  Camissonia contorta Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC26512  Capsella bursa-pastoris P. Moyer 1972-3-4 109 Butte CSUC Campus. 1st and 2nd on Ivy, w side. 60 Comment
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  UCD114501  Cardamine californica R. E. Preston 1982-3-20 188 Butte at sides of Highway 70, 1.4 miles NE of Jarbo Gap, 17 miles NNE of Oroville. 670 Comment
  CAS-BOT-BC37791  Cardamine nuttallii A. A. Heller 1922-3-19 13599 Butte Magalia. Comment
  CHSC28635  Cardamine oligosperma M. S. Taylor 1979-3-31 1966 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC51503  Carex angustata S. C. Morey 1983-7-25 626 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45242  Carex aurea S. C. Morey 1983-7-24 625 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC478553  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville 1500 Comment
  SEINET10585608  Carex aurea Lowell Ahart 1987-5-22 Ahart 5678 Butte Near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC52264  Carex bolanderi L. P. Janeway 1988-6-14 2764 Butte NW side of canyon of West Branch Butte Creek; 1.1 mi E of Hwy 32 along road to Ewalt Camp. 944 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
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  SEINET4289467 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  CHSC111018  Carex cyrtostachya L. P. Janeway; Lowell Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. Small seepage/drainage (now dry) on the west edge of a low broad granite slab, 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC84735  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  JEPS120084  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Not maintained lawn, northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC45079  Carex echinata subsp. echinata Vernon Oswald 1987-5-21 2920 Butte Just w of the Skyway 1.4 mi s of Inskip. 1426 Comment
  CHSC106460  Carex feta Peter F. Zika 2009-6-17 24511 Butte Cascade Range Highlands (CaRH). E side of Concow Road near Clear Creek Ranch, 5 road miles N of Route 70. Common in partly shaded seeps. 620 Comment
  SEINET10650513  Carex feta Lowell Ahart 1987-5-6 Ahart 5544 Butte On damp to dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC63289  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC52912  Carex integra L. P. Janeway 1986-9-1 1829 Butte East end of Philbrook Reservoir. 1691 Comment
  JEPS110201  Carex integra Lowell Ahart 2006-7-16 12990 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  JEPS121937  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC94048  Carex inversa Peter F. Zika 2010-6-22 24981 Butte Montgomery Street near First Avenue, Oroville, Janeway's station, Sacramento Valley (ScV) 40 Comment
  CHSC94286  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  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
  CHSC105834  Carex mariposana Lowell Ahart 2010-7-27 16928 Butte High bank on the west side of the South Fork of the Feather River, east of Forest Road 22N68, about 1/4 mile southwest of the Feather Fork Mine, about 1-1/2 miles (air) northeast of Little Grass Valley Reservoir 1565 Comment
  CHSC12172  Carex multicaulis Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC42385  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC91270  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  RSA702633  Carex nebrascensis L. P. Janeway, B. Castro 2004-8-15 8244 Butte High Cascade Range. Southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  HSC86840  Carex nervina L. P. Janeway, Robert A. Schlising, B. Castro 1988-7-30 3146 Butte Coon Hollow, along dirt road 0.9 mi. SE of W Branch Feather River 1646 Comment
  CHSC42280  Carex nudata Steven Triano 1987-4-19 50 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico. Along West Branch Butte Creek. 853 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
  SEINET10949581  Carex nudata Lawrence P. Janeway, B. Castro; Pat Kelly 1987-5-10 Janeway 2030 Butte T23N, R3E, Cohasset quad. Section 3. In rocks at edge of Butte Creek 2 mi south of Doe Mill Rd (below Forks of Butte). 488 Comment
  CHSC42802  Carex pellita L. P. Janeway; C. A. Janeway 1986-8-31 1815 Butte NE side of Philbrook Reservoir, across the rd from the picnic area. 1691 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  UC600697  Carex pellita H. F. Copeland 1923-8-1 554 Butte Jonesville Comment
  CHSC48553  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2996 Butte At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  UCD140829  Carex senta A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. 914 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  UCD141166  Carex subfusca L. P. Janeway 1986-8-31 1809 Butte along edge of Philbrook Road 2 miles west of Philbrook Dam. 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
  CHSC4604  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus. Comment
  CHSC109162  Castilleja affinis subsp. affinis Lowell Ahart 2012-5-12 18041 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CHSC114979  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CHSC27563  Castilleja applegatei subsp. pinetorum Robert Schlising 1978-5-17 3262 Butte Magalia. Just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  UCSB61636  Castilleja applegatei subsp. pinetorum Bacigalupi, Rimo; Robbins, G.; Chisaki, Francia 1956-4-19 Butte Under yellow pine at lower (western) limits of Paradise 457 Comment
  SEINET10549342  Castilleja applegatei var. fragilis Mary Susan Taylor 1979-6-22 Taylor 2167 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  UCD122337  Castilleja attenuata M. Vincent 1964-4-9 532 Butte 1 1/2 miles south of Pearson Rd. Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC115264  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte In a small dry meadow, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  CHSC29117  Castilleja lacera M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2458 Butte On n side of Swedes Flat Rd in dry open areas in Foothill Woodland, ca. 1 mi e of its jct with Oroville Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  UC726419  Castilleja lacera A. A. Heller 1941-5-9 16107 Butte 0.5 mi above old Clear Creek Post Office site (on the Clark Road to Paradise) Comment
  CAS-BOT-BC240977  Castilleja pilosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC43163  Castilleja tenuis R. A. Schlising 1980-6-30 3796 Butte Meadow 0.1 mi S of Jct Humbolt Road and Skyway at Butte Meadows. 1341 Comment
  CAS-BOT-BC48700  Ceanothus cordulatus Clarence R. Quick 1964-7-9 64 -68 Butte On dead-end road into Wildcat Creek east of Pulga Comment
  CHSC20961  Ceanothus cuneatus M. S. Taylor 1974-3-19 87 Butte On creek side of Humbug Road, in vicinity of Honey Run Covered Bridge. Comment
  CHSC32656  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte Shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC3507  Ceanothus cuneatus M. Gregg 1966-2-21 15 Butte On Neal Rd. down from Paradise. 3 miles south of Chico. 243 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
  CHSC111155  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trail, about 50 yards southwest of Tem Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  UCD123937  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 923 e Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road, 0.29 km 340 deg. (True) NNW of Magalia. 700 Comment
  CHSC46798  Ceanothus diversifolius R. A. Schlising; P. Broyles 1988-7-9 4576 Butte E of Paradise and Magalia, and N of Oroville and Jarboe Gap; along Rim road. 792 Comment
  CAS-BOT-BC50821  Ceanothus integerrimus John Thomas Howell 1975-6-15 51116 Butte Sierra Nevada - Paradise - skyway near Billie Road 609 Comment
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  CHSC90034  Ceanothus integerrimus Ross Rowland 2001-4-14 44 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  SBBG28496  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  UCSB63612  Ceanothus integerrimus McBride, Marjorie 1986-4-13 Butte 10.7 mi n of Chico, E side of Hwy 32. Paradise West Quadrangle, 7.5'. W center Sect. 25. T23N, R2E. 536 Comment
  CHSC64651  Ceanothus lemmonii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  POM195581  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla. Comment
  UC202361  Ceanothus prostratus H. M. Hall 1914-7-31 9822 Butte Humboldt Road 1066 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  CHSC111395  Celtis australis Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On dry dark deep excellent soil, on the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SBBG128464  Celtis australis L. Ahart, L. Hanson, K. LeCoq, J. Guardino 2012-4-27 17910 Butte N side of Centennial Avenue, Lower Bidwell Park; Chico 80 Comment
  JEPS98599  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CAS-BOT-BC272094  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CHSC31597  Centaurea solstitialis L. Ahart 1977-6-16 1418 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS94438  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte abuot 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel tower power line, along sides of a logging road, about 1/4 mi w of Rim Road) 731 Comment
  CHSC649  Centaurium tenuiflorum A. Anderson 1963-7-7 Butte Near Golf Course. 76 Comment
  CHSC70817  Centranthus ruber B. Castro 1995-4-13 559 Butte N edge of town of Oroville, on open, disturbed cobbly flat on the S side of the Feather River, just E of its crossing under Hwy 70. On S side of levee, in vacant lot by residential area. 51 Comment
  UCD130181  Centromadia fitchii P. B. Kennedy 9-10 Aug 1921 s.n. Butte Biggs. Comment
  CHSC66662  Centromadia parryi subsp. rudis Vernon H. Oswald; Lowell Ahart 1996-7-22 8096 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 edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Sanctuary II. 33 Comment
  UC120354  Cerastium glomeratum Mrs. R. M. Austin Apr 1899 105 Butte Butte Creek Comment
  CHSC45906  Cercis occidentalis Lowell Ahart 1973-3-26 185 Butte Growing along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  CAS-BOT-BC137001  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 s.n. Butte 3 miles north-west of Bangor, along N. Honcut Creek 100 Comment
  CHSC42976  Cercocarpus betuloides var. betuloides Lowell Ahart 1987-7-3 5748 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 548 Comment
  CAS-BOT-BC277630  Chaenactis glabriuscula var. megacephala E. B. Copeland 1899-6-2 s.n. Butte Chico Comment
  CHSC23406  Chamaebatia foliolosa M. S. Taylor 1976-3-6 1010 Butte Above Macabes Creek, ca. 1/4 mi e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC52141  Chamaesaracha nana L. P. Janeway; R. A. Schlising 1988-7-1 2918 Butte South-facing cutbank of dirt road just NW of Summit Lake. 1950 Comment
  UC884528  Chamaesaracha nana A. A. Heller 1917-7-29 12866 Butte summit above Jonesville 2133 Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  POM215884  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  CHSC102508  Chamaesyce ocellata Lowell Ahart 2009-5-30 16955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC26627  Chamaesyce ocellata M. P. Hayes 1977-9-12 124 Butte In the area of the gardens on Butte College Campus at the corner of Pentz and Clark roads. 90 Comment
  CHSC45714  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park area above golf course and rifle range. Comment
  CHSC102982  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
  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
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  SEINET10529957  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2662 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC92612  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kim-shew Creek drainage. Steep east-facing slope. 1478 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
  SEINET10529917  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2663 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UCSB26367  Cheilanthes gracillima Smith, Dale 1965-6-28 Butte Walker Plains, 20mi SW of Buck's Lake Comment
  SEINET5867647 Image available Cheilanthes siliquosa L. S. Rose 1967-1 67076 Butte 1 mi S of Pulga, North Fork, Feather River. Comment
  RSA755750  Chenopodium L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  JEPS115185  Chenopodium 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
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC52805  Chenopodium murale Lowell Ahart 1981-11-6 3223 Butte On the w side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CHSC50360  Chenopodium pratericola Vernon Oswald; Robert McNairn 1990-6-1 4277 Butte Arroyo Chico (section not surveyed). 2815 San Verbena, northeast Chico. 62 Comment
  CHSC102985  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC31544  Chenopodium vulvaria L. Ahart 1977-7-1 1442 Butte On bottom and sides of small swale near our home. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC451486  Chimaphila umbellata Kate E. Conger 1907-1-1 18 Butte Brush Creek Comment
  CHSC30760  Chimaphila umbellata M. S. Taylor 1978-9-9 1907 Butte Bull Run Rd., ca. 50 ft. w of the rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  CHSC44073  Chimaphila umbellata L. P. Janeway 1987-6-8 2160 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of rd to Coyote Gap. 640 Comment
  CHSC93990  Chimaphila umbellata R. D. Fischer 2004-6-20 778 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In the western woods above the pond. 1371 Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) Comment
  JEPS117271  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  JEPS61793  Chlorogalum angustifolium Wayne Roderick and G. Keator 1966-4-24 Butte near eastern edge Chico (on Chico-Lake Almanor Road (Highway 32)); near eastern edge Chico Comment
  UC217459  Chlorogalum angustifolium H. M. Hall 1917-5-13 103 d2 Butte w Pentz Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC39075  Chorizanthe membranacea R. A. Schlising; J. D. Jokerst 1980-7-2 3821 a Butte 1.4 miles S of Nimshew junction of Nimshew Road and Centerville Road, along the latter. At roadside and on rock outcrops in the open. Comment
  CHSC45845  Chorizanthe membranacea Lowell Ahart 1975-6-5 783 Butte On dredger piles along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA392754  Chorizanthe membranacea L. Ahart 1984-6-8 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mile E of Ponderosa Dam, ca. 2 miles N of Forbestown. 475 Comment
  CHSC38609  Chorizanthe stellulata Vernon Oswald 1983-5-14 489 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  CAS-BOT-BC36373  Chrysolepis sempervirens W. R. Dudley 1895-8-11 s.n. Butte near Butte Summit R.R. Station Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  CHSC42205  Cicendia quadrangularis Kent Clement 1986-4-7 14 Butte On North Table Mountain, 10.5 km n of Oroville, w of Cherokee Rd. 411 Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? Comment
  CHSC102813  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC302  Cirsium andersonii E. Walker 1932-7-25 Butte Magalia. Comment
  CAS-BOT-BC285526  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30485 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC285724  Cirsium vulgare Lowell Ahart 1982-8-10 3739 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 Comment
  CAS-BOT-BC228755  Cistanthe umbellata Clarence R. Quick 1952-7-1 52 -118 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC1092  Clarkia arcuata M. Garbutt 1929-4-21 Butte Above Salmon Hole. 152 Comment
  CHSC62766  Clarkia biloba subsp. brandegeeae L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4354 Butte Plumas National Forest. 0.1 mi west of the south end of Ponderosa Dam; South Fork Feather River. Adjacent to dirt road and on the road cutbank. 298 Comment
  CHSC84703  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7801 Butte Northern Sierra Nevada Foothills. On peninsula into Lake Oroville formed by the confluence of South Fork and Middle Fork Feather River arms of the lake; along access road to Craig Boat-in Campground about 510 m east-northeast of the campground. Road cutbank. 317 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CHSC84858  Clarkia gracilis subsp. gracilis L. P. Janeway 2003-5-24 7795 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. Road cut. 82 Comment
  CAS-BOT-BC163357  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek 786 Comment
  UC1730254  Clarkia mosquinii L. P. Janeway and Perrie Cobb 1993-7-6 4430 Butte 1.8 mi E-NE of Bald Rock Dome (Watson Ridge, southwestern end, 0.7 mi NW of Fall River) 1097 Comment
  SEINET10492502  Clarkia mosquinii subsp. mosquinii Lawrence P. Janeway 1991-6-1 Janeway 3978 Butte Berry Creek quad T22N, R4E, SE 1/4 of SW 1/4 of sec 35, elev. 1780 feet. West-facing rocky cut-bank of Dark Canyon Road 0.6 mile south of Big Bend Road/Parkhill. Mid-slope of canyon in mixed conifer forest. 545 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  UCD104851  Clarkia purpurea H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  CHSC112110  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2012-6-5 18165 Butte On the side of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  SD3273  Clarkia rhomboidea E. B. Copeland 1931-6-10 Butte Jonesville 1650 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
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  CHSC36088  Claytonia lanceolata R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4316 Butte NE part of county near Humbug Summit. 2042 Comment
  CHSC59334  Claytonia parviflora J. L. Guardino 1992-4-16 7 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC32674  Claytonia parviflora subsp. parviflora M. S. Taylor; L. Hanson 1981-3-16 3412 Butte shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n or Oroville. 304 Comment
  CHSC56069  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-7-2 2961 Butte Along road to French Creek, 1.2 mi south of Coyote Gap. Shady seepy area above the road. 1127 Comment
  CHSC38630  Claytonia perfoliata subsp. perfoliata Vernon Oswald 1983-2-19 87 Butte Upper Bidwell Park, Chico, beside the North Rim Trail 1.4 mi e of the power lines. 353 Comment
  CAS-BOT-BC443706  Claytonia rubra Lowell Ahart 1984-7-19 4743 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC4714  Claytonia rubra subsp. rubra R. Carter 1966-4-28 383 Butte Found in Feather R. Canyon ca. 1.5 mi. SW of Cresta Power House on E side Hwy. 70; growing in loose granite on bank above road. 670 Comment
  UC600486  Claytonia rubra subsp. rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville Comment
  UC852042  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows; Sierra Nevada 1219 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge 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. 51 Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  RSA408294  Collinsia heterophylla Michael A. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Comment
  UC600651  Collinsia parviflora H. F. Copeland 1932-6-27 Butte woods by Butte Creek Meadows (going toward Kirby's Meadow, Jonesville); Jonesville Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  CHSC3817  Collinsia sparsiflora L. E. Dunkel 1965-2-23 1 Butte Along road bank ca. 200 yards e of covered bridge, on centerville road of Butte Canyon. 54 Comment
  UC103382  Collinsia sparsiflora var. collina Mrs. R. M. Austin April 1896 Butte Chico Comment
  CHSC1738  Collinsia tinctoria V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  SEINET10454741  Conium maculatum Mary Susan Taylor 1981-5-18 Taylor 3806 Butte T21N R1W Chico quad. Along River Rd, near bridge over slough ca. 5 mi SW of Chico. 120 ft. 36 Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  POM70644  Convolvulus arvensis C. C. Bruce 1897-05 2040 Butte Butte Creek. Comment
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC48987  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1987-7-29 3154 Butte Hwy 32, 1.5 mi ssw of Lomo. 1146 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  RSA28808  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  SEINET12137282  Cornus nuttallii T. R. Norton 1977-1 11 Butte ca 6.5 NE of Paradise, 1.5 mi N of Magalia, 0.5 mi N of Magalia Reservoir, 0.25 mi E of the Skyway Comment
  SBBG119778  Coronilla varia L. Ahart 2006-6-24 12862 Butte E side of dirt rd (Ponderosa Way), on Cohasset Ridge, ca. 4 air mi NE of Cohasset 1113 Comment
  UC1562396  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  SEINET10506963  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5143 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC6596  Cotula coronopifolia V. Stevens 1968-3-18 1 Butte Stream emptying into Maas Pond on the Lucky 7 Ranch 14 mi se of Chico on the Pentz Rd. (s side). 198 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  SEINET10449700  Crassula aquatica Mary Susan Taylor 1982-4-28 Taylor 4358 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
  CHSC103949  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 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
  CHSC62545  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Gravelly roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  CHSC82225  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC485366  Crepis occidentalis H. F. Copeland 1931-6-11 1532 Butte near Butte Creek Meadows; Jonesville 1828 Comment
  CHSC109865  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  CHSC117425  Crucianella angustifolia Lowell Ahart 2016-5-30 20899 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC39513  Crucianella angustifolia Lowell Ahart 1983-6-12 4037 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 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
  RSA755640  Crucianella angustifolia L. Ahart 2009-5-15 15706 Butte East side of Big Chico Creek, on the 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. 234 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  RSA774125  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  UC1609326  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte about 2 mi se Bald Mountain (ne of Stirling City, on w side of a poor dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC46751  Cryptantha flaccida Lowell Ahart 1972-5-8 102 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS118004  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  CHSC42516  Cryptantha intermedia Lowell Ahart 1987-5-9 5577 Butte Along Pulga Road, about 1/4 mi west of Bardees Bar along the North Fork of the Feather River. about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC33416  Cryptantha milobakeri R. A. Schlising; M. S. Taylor 1980-7-5 3827 Butte 0.2 mi S of Jct Hwy 32 and Humboldt Road at Lomo. 1173 Comment
  CHSC35069  Cryptantha torreyana R. A. Schlising 1981-7-14 4149 Butte NE part of county, near Humbug Summit, at Willow Creek and Meadow. 1950 Comment
  UC857289  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 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
  CAS-BOT-BC85562  Cupressus macnabiana John Thomas Howell 1955-6-14 30444 Butte Magalia 731 Comment
  CAS-BOT-BC85567  Cupressus macnabiana Lowell Ahart 1985-5-15 5007 Butte 4 miles north-east of Jarbo Gap, near a steel tower line, west of Rocky Ridge. 800 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC45036  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70. 548 Comment
  UC392215  Cuscuta californica E. B. Copeland Jul 1929 Butte Jonesville 1550 Comment
  JEPS117549  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS94687  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte about 7 air mi n of Oroville (North Table Mountain, e of the fence, e of the cow chute and on the e side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  RSA299404  Cuscuta howelliana L. Ahart 1979-10-7 s.n. Butte Peter Ahart Ranch, Honcut. In vernal pool in a farmed field in Valley Grassland. 35 Comment
  CHSC21260  Cynoglossum grande M. S. Taylor 1973-3-27 30 Butte Ca. 5 yds s of Humbug Rd, ca. 19 mi se of Chico. 548 Comment
  CHSC3878  Cynoglossum grande Gerry Carrauthers 1966-3-7 51 Butte Honeyrun Rd. On hillside above old Honeyrun Bridge. Ca. 5 mi. N.W. of city of Paradise. Comment
  UC480689  Cynoglossum grande H. F. Copeland 1923-2-24 107 Butte Ferny Way near Chico Comment
  CHSC45208  Cynosurus echinatus Lowell Ahart 1975-5-12 759 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
  JEPS124403  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte 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. Comment
  CDA13838  Cyperus bipartitus G. F. Hrusa, T. D. Wilfred 1996-9-5 13566 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  CHSC109752  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC45156  Cyperus difformis Lowell Ahart 1974-10-20 665 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1100544  Cyperus difformis Herbert L. Mason and Verne Grant 1945-7-10 12636 Butte s.w. corner Sanford slough Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC31478  Cyperus eragrostis L. Ahart 1980-7-29 2499 Butte Along the edge of a small stream, near Hurleton Swedes Flat Rd, near Hurlton. 600 Comment
  CHSC94998  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
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CDA42934  Cyperus iria L. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 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
  JEPS98503  Cyperus niger Lowell Ahart 2000-8-23 8662 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
  CHSC51018  Cyperus squarrosus Lowell Ahart 1990-7-15 6563 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC42899  Cyperus strigosus Lowell Ahart 1987-7-17 5832 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
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  CHSC37118  Cypripedium fasciculatum L. Ahart 1982-9-13 3809 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC23703  Cystopteris fragilis M. S. Taylor 1976-5-5 1118 Butte On s side of Bear Creek, ca. 1/4 mi s of Hwy 70, ca. 30 mi ne of Oroville. Comment
  CHSC28889  Cystopteris fragilis M. S. Taylor 1979-5-4 1998 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  POM196539  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville. 1524 Comment
  SBBG28172  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville; in woods by Butte Crk 1550 Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 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; T25N, R5E, Section 33 1524 Comment
  SEINET10507360  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 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
  CAS-BOT-BC189851  Danthonia californica Lowell Ahart 1983-8-16 4291 Butte Sierra Nevada. One mile east of Butte Meadows. Along a small stream that flows into Butte Creek. 1450 Comment
  CHSC112439  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards west of a wet meadow, about 40 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  JEPS95167  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CHSC1641  Darmera peltata R. M. Staley 1953-5-17 Butte Canyon Creek. Comment
  CHSC5967  Darmera peltata M. MacArthur 1968-6-17 184 Butte SE edge of Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  CAS-BOT-BC420352  Darmera peltata Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  JEPS95790  Datisca glomerata Lowell Ahart and Vernon H. Oswald 1999-10-3 8289 Butte about 1 mi SE of Ord Ferry (E side of river, NW of Parrott Landing, about 2 mi SE of Ordbend, about 12 miles (air) SW of Chico); Sacramento River 32 Comment
  CHSC13709  Datura wrightii M. S. Taylor 1974-10-11 329 Butte In field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC31862  Daucus carota L. Ahart 1977-7-14 1467 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101137  Daucus pusillus Lowell Ahart 2009-5-15 15676 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CHSC46501  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  UCD95779  Delphinium hansenii W. R. Powell 1968-5-16 1501 Butte Along Olive Highway, 4 miles east of Oroville. 304 Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  UCD95846  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CAS-BOT-BC16981  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-13 5520 Butte Near Clear Creek Comment
  CHSC52946  Delphinium variegatum subsp. variegatum Arlene Petlock 1982-4-17 97 Butte S side of Hwy 162 ca. 0.1 mi e of jct Hwys 99 and 162, ca. 10 mi s of Chico. 60 Comment
  CHSC103948  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  UCD62772  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Near Nelson. Comment
  UCD62955  Deschampsia danthonioides L. Ahart 1977-4-29 1339 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  RSA591519  Deschampsia elongata H. F. Copeland 1930-7-25 1343 Butte Jonesville. In meadow below cabin. 1524 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  UC398885  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  UCD63483  Deschampsia elongata L. E. Hazeltine 1916-6-10 Butte Chico. Comment
  UC1362277  Dicentra formosa H. Wurlitzer 1965-4-6 Butte ca 2 mi s Lake Philbrook (0.5 mi e of Forest Service Road 25N17, on n side of w branch of Fish Creek (Forest Service Road 25N08)) Comment
  CAS-BOT-BC402380  Dicentra formosa subsp. formosa Lowell Ahart 1984-6-10 4710 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CHSC118579  Dichelostemma capitatum subsp. capitatum Nancy Groshong 2017-4-30 1 Butte Magalia Serpentine. Just west of Coutelenc Road and Skyway, south side of Coutelenc Road. 701 Comment
  CHSC90581  Dichelostemma capitatum subsp. capitatum Joseph Silveira 1982-4-17 11 Butte 275 m east-northeast of the old dump site and 0.8 km north of Little Chico Creek, 1.9 km east of Chico. 105 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CAS-BOT-BC483253  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1980-3-22 2049 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC501082  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles SW of Oroville on Highway 24 Comment
  SEINET10932619  Dichelostemma multiflorum A. Arthur Heller 1914-5-19 Heller 11421 Butte Hills 8 miles north of Oroville Comment
  CHSC113803  Dichelostemma volubile M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CHSC31528  Dichelostemma volubile L. Ahart 1977-5-22 1396 Butte Along the sides of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC209038  Digitaria sanguinalis Lowell Ahart 1982-8-22 3745 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut - Sierra Nevada 50 Comment
  CHSC38809  Digitaria sanguinalis Vernon Oswald 1983-7-8 843 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel at Five Mile Recreation Area. 79 Comment
  UC573995  Digitaria sanguinalis H. S. Yates 1936-8-19 6118 Butte 10 mi s Durham; Chico Quad. Comment
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Dec 18 2008
  UCD63978  Digitaria sanguinalis Beecher Crampton 1957-9-17 4618 Butte Biggs Rice Exper. Sta. 5 miles northwest of Biggs. Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC151922  Diplacus douglasii Clare B. Hardham 1978-4-17 21556 Butte Lava - Lobb Mountain Comment
  CAS-BOT-BC150496  Diplacus grandiflorus John Thomas Howell; Gordon H. True 1967-7-12 43386 Butte North Fork Feather River near Cresta Powerhouse 426 Comment
  CHSC44762  Diplacus grandiflorus R. Banchero 1980-5-12 151 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CHSC44771  Diplacus grandiflorus R. Banchero 1980-6-19 258 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC44942  Diplacus kelloggii J. Marr 1987-4-25 15 Butte Ca. 1 mi wsw of Cherokee Rd on Table Mt., 6 mi n of Oroville. 342 Comment
  SBBG26853  Diplacus layneae L. Constance 1941-5-28 2828 Butte south branch of the Feather River at Magalia 487 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CAS-BOT-BC154169  Diplacus tricolor Mrs. C. C. Bruce 1897-5-1 2107 Butte Fields Comment
  CHSC50352  Disporum hookeri Vernon Oswald 1990-5-14 4214 Butte Marsh located ca. 1.5 mile south-southeast of Brush Creek. 950 Comment
  CHSC90304  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point. 1249 Comment
  CHSC92570  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UC195373  Dodecatheon clevelandii subsp. patulum A. A. Heller 1914-2-16 11178 Butte 8 mi n Oroville; n of Oroville Comment
  HSC23407  Dodecatheon clevelandii subsp. patulum Willis Ball 1970-2-24 70 Butte N edge of Bidwell Golf Course 107 Comment
  CHSC31199  Dodecatheon hendersonii M. S. Taylor 1980-3-19 2395 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. Comment
  UC1586407  Dopatrium junceum Lowell Ahart, Peter Ahart, and Carl Wick 1991-7-21 6668 Butte Rice Experiment Station, about 1/8 mi S of Butte City Hwy, N of Biggs 30 Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  JEPS87194  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  POM59142  Downingia bicornuta E. B. Copeland 1903-5-15 3176 Butte Chico. Comment
  JEPS29145  Downingia bicornuta var. bicornuta John H. Weiler and A. P. Nelson 1961-5-29 61244 Butte 5 mi s Chico (e side of U.S. Highway 99 E (bridge 12-125)) Comment
  CHSC103734  Downingia cuspidata Lowell Ahart 2010-5-16 16690 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC62833  Downingia insignis Ella Icard 1893-1-1 Butte Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  CHSC52393  Downingia ornatissima Harritta Gaussoin 1980-4-22 20 Butte Southwest jct of Broyles Rd and hwy 99N, ca 13 mi N of Chico on hwy 99. 60 Comment
  SEINET10458518  Downingia ornatissima Mary Susan Taylor 1978-5-7 Taylor 1609 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC764554  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-21 1170 Butte 8 mi nw Chico Comment
  CHSC12173  Draba verna var. aestivalis Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC37097  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC46489  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 air ... Field redacted by CHSC, contact the data manager for more information 1615 Comment
  UCD123991  Drosera rotundifolia Barry Rice 2011-7-20 BR 110709 Butte Mallory Meadow. 1350 Comment
  SEINET11994763  Drosera rotundifolia L. Ahart, Ahart, P. 1984-1 4756 Butte About 1/2 mile E of Bald Mountain, about 5 mi NE of Stirling City 1750 Comment
  JEPS120572  Drymocallis glandulosa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  RSA739621  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Cascade Range Foothills, Canyon drainage on E side of Dark Canyon raod 90 miles N of the gate to the boat ramp into Lake Oroville 396 Comment
  CAS-BOT-BC536731  Duchesnea indica Lee Richardson 1939-6-3 s.n. Butte Established at Richardson's Springs Comment
  CAS-BOT-BC428077  Dudleya cymosa subsp. cymosa Lowell Ahart 1980-5-25 2319 Butte Along Swedes Flat Road, near Bangor. Comment
  CHSC117752  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Around buildings, Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC75995  Dysphania ambrosioides Lowell Ahart 1999-8-22 8183 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC34193  Dysphania botrys R. A. Schlising 1979-10-14 3510 Butte Along Sacramento River w of Chico. Just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC113116  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CDA7122  Echinochloa colona L. Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC92551  Echinochloa colona Lowell Ahart 2005-12-11 12516 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CAS-BOT-BC197097  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC197101  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC110353  Echinochloa crus-galli B. Castro 2006-8-10 1595 Butte Sacramento Valley. Ca 2.5 mi W of hwy 99 and 1.2 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of dirt road which crosses Cherokee Canal just N of the Biggs canal. 102 Comment
  CHSC38813  Echinochloa crus-galli Vernon Oswald 1983-7-8 842 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 Comment
  CHSC113232  Elatine Lowell Ahart 2014-4-30 19421 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC115338  Elatine Lowell Ahart 2015-4-24 20066 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS122150  Elatine Lowell Ahart 2014-8-8 19696 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC45275  Elatine heterandra Vernon Oswald 1988-4-26 3282 Butte Gray Lodge Waterfowl Management Area, on the n side of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CAS-BOT-BC113636  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CAS-BOT-BC113457  Eleocharis bella Clarence Roy Quick 1963-7-16 63 52 b Butte Section Corner Meadow, E of Pulga, Feather River canyon. 1463 Comment
  CHSC78182  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  POM196137  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  JEPS127225  Eleocharis macrostachya Lowell Ahart 2016-5-30 20893 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CDA38943  Eleocharis macrostachya T. C. Fuller 1976-7-8 20147 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  SEINET10971840  Eleocharis ovata Mary Susan Taylor 1978-7-22 Taylor 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  SEINET13710285  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8597 Butte Oroville Wildlife Area, 4 Mi. SW of Oroville (T18N, R3E, Dec 3, NE 1/4) 140 Ft. 43 Comment
  SEINET7586858 Image available Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  CHSC55616  Eleocharis parishii C. A. Janeway 1986-10-25 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC78566  Eleocharis parishii Lowell Ahart 2000-9-4 8682 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS99030  Eleocharis quadrangulata Vernon H. Oswald 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  RSA724860  Eleocharis quadrangulata L. P. Janeway 2006-7-19 8816 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. NAD83. 41 Comment
  JEPS120615  Eleocharis radicans Lowell Ahart 2013-11-13 19227 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. Comment
  SEINET13709637  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8677 Butte Feather River, 1/2 Mi. W of Pacific Heights Rd., Oroville Wildlife Area, 3.3 Mi. SW Oroville (T19N, R3E, S 34, SE 1/4) 140 Ft 43 Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CHSC4355  Elymus glaucus R. L. Smith 1966-5-25 8 Butte Butte Creek Canyon 3 mi e of Skyway. Comment
  UC204881  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 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
  JEPS115913  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 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
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CHSC43290  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC49492  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1983-7-6 814 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi e of Hwy 32. 1249 Comment
  CHSC41306  Elymus trachycaulus subsp. subsecundus S. C. Morey 1983-7-22 542 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA718076  Elymus trachycaulus subsp. subsecundus L. Ahart 2006-7-16 12999 Butte on northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1516 Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  SEINET12192833  Epilobium adenocaulon M. S. Taylor 1975-1 954 Butte ca 1 mi S of Paradise, E side of Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy 610 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
  CHSC111152  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC117347  Epilobium campestre B. Castro 2013-12-13 2002 Butte Sacramento Valley. Richvale vernal pools, 500 to 1000 ft W of Hwy 99 directly across from Thermalito Afterbay and just less than 1 mi S of Richvale Hwy. Bottoms of vernal pools south of east-west ditch near S end of property. 33 Comment
  CHSC66164  Epilobium campestre Vernon H. Oswald; Lowell Ahart 1996-5-27 7653 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 bed of a marsh on the S end of Tract 2, Sanctuary II. 33 Comment
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC166843  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 289 Comment
  UC204406  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  UC107941  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  CAS-BOT-BC165939  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end; Along dirt road 21N25A 1079 Comment
  CHSC52095  Epilobium glaberrimum M. S. Taylor 1978-7-18 1726 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC46574  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1987-7-16 3132 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. On the edge of the creek. 1487 Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC38064  Epilobium minutum R. E. Preston 1982-4-22 255 Butte Ca. 4 mi SW of Paradise. 286 Comment
  CHSC62572  Epilobium minutum L. P. Janeway 1993-5-2 4338 Butte South of Serpentine Point and above Hwy 70. Narrow ridge. 518 Comment
  JEPS108857  Epilobium minutum Lowell Ahart 2006-5-10 12623 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  UCD111115  Epilobium minutum Christopher Mallek 2008-1 HW1- 8 Butte Magalia. 756 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
  CHSC44137  Epilobium obcordatum V. Oswald; L. Ahart 1988-7-29 3635 Butte Ca. 5 (air) mi se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC61642  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte On the north side of the ridge, about 1/2 mile easta of Snow Mountain. 2103 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC46384  Epilobium torreyi Lowell Ahart 1989-5-23 6257 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC28508  Equisetum arvense M. S. Taylor; J. D. Jokerst 1979-10-13 2251 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps), ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  UC600577  Equisetum hyemale subsp. affine H. F. Copeland 1920-5-23 226 Butte Jonesville Comment
  SEINET10530173  Equisetum hyemale subsp. affine Mary Susan Taylor 1979-3-19 Taylor 1933 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC99659  Equisetum laevigatum H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows on a slope. UTM 10 628108E 4440095N. 1326 Comment
  UCD62970  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CHSC69738  Eragrostis mexicana subsp. virescens Lowell Ahart 1997-10-24 7939 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  SEINET13711413  Eragrostis pectinacea Lowell William Ahart, Lowell William Ahart 1999-1 8152 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CAS-BOT-BC284081  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 1492 Butte The edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville 35 Comment
  CHSC75985  Eragrostis pectinacea var. pectinacea Lowell Ahart; Vernon H. Oswald 1999-8-13 8152 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
  JEPS117433  Eremocarpus setiger Lowell Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC90971  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8377 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road about 1.2 km north of Mayaro and North Fork Feather River, 0.2 km east of Camp Creek. 747 Comment
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Jul 8 2014
  CHSC41906  Ericameria arborescens Lowell Ahart 1976-10-13 1222 Butte Along the road, about 1 1/2 mile west of Pinkard Creek, about 2 miles west of the Sly Creek Dam. 762 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC45661  Erigeron bonariensis Vernon Oswald 1987-6-12 2991 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC95137  Erigeron bonariensis Lowell Ahart 2006-11-12 13540 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville 1935 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  CHSC43603  Erigeron inornatus var. inornatus Vernon Oswald 1983-7-6 813 Butte On Humboldt Rd. (to Butte Meadows) 0.6 mi e of its jct. with Calif. Hwy. 32. 1249 Comment
  CAS-BOT-BC295771  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville Comment
  POM34274  Erigeron philadelphicus Mrs. R. M. Austin, C. C. Bruce 1898-05 2077 Butte Iron Canyon. Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC88916  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC90025  Eriodictyon californicum Ross Rowland 2001-4-14 45 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  CAS-BOT-BC259396  Eriogonum luteolum Richard R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET5330462  Eriogonum luteolum J. T. Howell 1959-9-20 34615 Butte along Feather River near Oroville 46 Comment
  SD1343  Eriogonum marifolium E. B. Copeland 1930-7-12 Butte Above Jonesville; open fir woods 2000 Comment
  CAS-BOT-BC263200  Eriogonum marifolium var. marifolium A. A. Heller 1928-7-25 14700 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  CHSC96904  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC45370  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1987-6-10 2980 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  CHSC69454  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte On the west side of Concow Road, about 2 miles northeast of Concow Reservoir. 701 Comment
  CHSC92285  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8515 Butte Northern High Sierra Nevada. Plumas National Forest; small knob of serpentine between upper end of Magalia Reservoir and Hollywood Drive, Magalia. 741 Comment
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Feb 20 2019
  RSA0114874  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; Magalia Serpentine (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  SEINET10479575  Eriogonum ursinum Mary Susan Taylor 1982-6-6 Taylor 4608 Butte T22N R5E ne/ne sec 6. Pulga SW quad. Pulga serpentine, along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC30842  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC31069  Eriogonum vimineum M. Hayes; J. Warner 1977-9-11 59 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of Hwy 99 and Hwy 32 overpass in Chico. 914 Comment
  UCD101524  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte along Feather River near Oroville. 45 Comment
  UC1609157  Eriophyllum lanatum var. croceum Vernon H. Oswald and Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC308169  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC90176  Erodium botrys Robert Kissane 1989-4-18 10 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC38452  Erodium cicutarium Vernon Oswald 1983-3-13 153 Butte Upper Bidwell Park, Chico, in Parking Area P (2.0 mi e of the power lines). 207 Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CHSC512  Erysimum capitatum var. capitatum G. Spurlock 1935-5-25 Butte Feather river. 274 Comment
  CHSC42864  Erythranthe breweri Lowell Ahart 1987-5-12 5633 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC44750  Erythranthe breweri R. Banchero 1980-6-13 223 Butte Little Bald Rock, ca 1.0 mi E of Bald Rock Rd. 1036 Comment
  CHSC61502  Erythranthe breweri Lowell Ahart 1993-6-20 6982 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC104814  Erythranthe guttata 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
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  CHSC31871  Erythranthe latidens L. Ahart 1978-5-1 1678 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD4668  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Joneville, clear openings in woods 1550 Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 Comment
  CHSC42009  Erythronium multiscapideum Lowell Ahart 1976-4-15 1080 Butte Along Swede's Flat Road, about 2 miles east of the Bangor Oroville Highway, north-east of Bangor. 457 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  CAS-BOT-BC504529  Erythronium multiscapideum Lowell Ahart 1982-4-8 3272 Butte Along Swedes Falt Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CAS-BOT-BC402638  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  POM253319  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-17 15041 Butte Slope back of the Salmon Hole on Chico Creek east of Chico 122 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
  CHSC6007  Eucalyptus nicholii M. MacArthur 1968-6-19 250 Butte Lawn in front of Administration bld. Chico State College. 60 Comment
  CHSC118891  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. 1158 Comment
  CHSC80632  Euonymus occidentalis var. occidentalis Lowell Ahart; Vernon H. Oswald 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) southeast of Stirling City. 609 Comment
  SEINET10475036  Eupatorium occidentale Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4206 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC612  Euphorbia crenulata I. Huffman 1930-5-20 Butte Paradise. 548 Comment
  UCD142639  Euphorbia nutans Bioletti Wyandotte 1927-11-11 852 Butte Butte County. 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
  CAS-BOT-BC278801  Festuca occidentalis A. A. Heller 1913-6-7 10791 Butte Near Stirling 1036 Comment
  JEPS106262  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  SEINET10507961  Festuca occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4165 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  SEINET10507963  Festuca occidentalis Mary Susan Taylor 1975-10-29 Taylor 969 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CAS-BOT-BC278628  Festuca subulata Lowell Ahart 1982-9-13 3812 Butte Along the banks of Pinkard Creek, Creek, ca. 1/8 mi. N of the Lost Creek Res. Dam, ca. 2.15 mi. NW of Strawberry Balley 1100 Comment
  UCD111860  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Sierra Nevada. 5.5 miles below West Branch Bridge, Feather River Highway. Comment
  SEINET10475090  Filago gallica Mary Susan Taylor 1978-5-6 Taylor 1623 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  CAS-BOT-BC437083  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC62909  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11881 Butte Canyon of Chico creek 5 mi. e. of Chico. The type was collected about 50 mi. to the s., probably along the Bear River. Comment
  CAS-BOT-BC62948  Frangula californica subsp. tomentella John Thomas Howell 1975-6-15 51073 Butte Butte Creek near Chico. 60 Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC29098  Fraxinus dipetala M. S. Taylor; J. D. Jokerst 1980-4-18 2522 Butte On dry bluff, on e side side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  UC215516  Fraxinus dipetala Helen M. Edwards Jun 1917 Butte De Sabla Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico 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
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  CHSC9279  Fritillaria affinis D. C. Burns 1971-3-6 99 Butte Ca. 1 mi e of the intersection of Manzanita Ave. and Centenial Ave. (lower Big Chico Creek Canyon, called the Fern Banks). 82 Comment
  CHSC49653  Fritillaria atropurpurea Vernon Oswald 1985-6-3 1805 Butte Rd. 26N27 0.3 mi s of Humboldt Rd. ne of Jonesville. 1633 Comment
  CHSC40077  Fritillaria recurva R. M. Austin 1896-5-1 Butte East of Chico. Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  SEINET10500691  Galium bifolium Mary Susan Taylor 1978-7-18 Taylor 1714 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC20972  Galium bolanderi M. S. Taylor 1975-9-12 906 Butte Ca. 24 mi NE of Chico, ca. 500 ft W of Hwy 32. 1066 Comment
  JEPS119905  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte On the south side of the Humboldt Trail, about 100 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  SEINET12515235  Galium parisiense Lowell Ahart, John Dittes and Josephine Guardino 2002-6-21 9748 Butte South side of a poor dirt road, Watson Ridge, about 2 (air) miles northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1095 Comment
  UCD80740  Galium parisiense CNPS SN Foothill Team 2005-5-6 SNFN 0159 c Butte City of Chico, Upper Bidwell Park, stand is about X miles up the road from the gate, plot is ca. 50 m northwest of the road. 133 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  SEINET10902550  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-5-8 Taylor 2600 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  JEPS98564  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  CHSC46929  Gamochaeta stachydifolia Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  JEPS126557  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 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
  CHSC6607  Gardenia jasminoides M. MacArthur 1968-6-17 294 Butte SE yard of Building U on the Chico State College Campus. 60 Comment
  CDA43422  Garrya D. G. Kelch 2012-9-19 12 .361 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC30816  Garrya fremontii M. S. Taylor; J. D. Jokerst 1980-4-18 2530 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC643  Garrya fremontii M. Roberson 1956-4-9 Butte SW of Paradise along Skyway 426 Comment
  POM219524  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  CDA2169  Gastridium phleoides L. Ahart 2000-5-13 8340 Butte 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. Comment
  CHSC108171  Gastridium phleoides L. P. Janeway 2011-8-18 10666 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  JEPS108157  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River 1179 Comment
  RSA518805  Gaultheria ovatifolia Vernon H. Oswald, L. Ahart, L. Hanson 1990-8-14 4440 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.5 miles west of the north end of Sly creek Reservoir. 1220 Comment
  SEINET10453074  Gayophytum heterozygum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4224 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC208055  Genista monspessulana John Thomas Howell 1962-6-16 37574 Butte Magalia 731 Comment
  RSA754951  Gentiana newberryi var. tiogana Robert A. Schlising, A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles east of Jonesville, along Humbug Road. 1768 Comment
  CHSC48451  Gentianella amarella subsp. acuta Vernon Oswald; Lowell Ahart 1987-8-5 3191 Butte Scotts John Creek 0.6 mi n of the road connecting Humboldt and Humbug roads. 1780 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC50047  Geranium dissectum Lowell Ahart 1990-4-8 6434 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC10752  Geranium molle Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115239  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC26851  Geum macrophyllum M. S. Taylor; M. Hayes 1978-6-24 1639 Butte On Ernies Island, at jct with Old Humboldt Rd and Butte Creek, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CAS-BOT-BC459404  Geum macrophyllum H. F. Copeland 1920-8-29 139 Butte Jonesville 1219 Comment
  CHSC41370  Gilia capitata subsp. pedemontana R. A. Schlising 1980-6-2 3621 Butte N of village of Forest Ranch, along Highway 32. 1005 Comment
  SD122562  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 4671 Butte At the Ponderosa Dam, ca. 2.0 miles northwest of Forbestown. 370 Comment
  CHSC31360  Gilia tricolor Stephen M. Turek 1980-4-14 4 Butte Ca. 2 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  RSA590189  Gilia tricolor Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7210 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 1.9 miles along trail from entrance on Cherokee Rd. Comment
  CAS-BOT-BC266587  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  CHSC8568  Gleditsia triacanthos M. MacArthur 1968-6-13 362 Butte Chico State College Campus. 60 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  UC1609366  Glyceria elata Lowell Ahart 1993-7-1 7050 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 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-BC302471  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 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
  JEPS113905  Grindelia hirsutula L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills; Along the Oroville-Quincy Hwy 0.3 road km SW of S end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville 306 Comment
  JEPS115719  Grindelia hirsutula Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle 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
  CHSC20546  Grindelia hirsutula var. davyi M. S. Taylor 1975-6-30 811 Butte Along Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  CHSC62095  Grindelia hirsutula var. davyi L. P. Janeway 1993-8-7 4507 Butte Plumas National Forest. Along Road 21N25A at southwestern end of Watson Ridge; ca 2 mi east of Bald Rock Dome. Along edges of dirt road. 1082 Comment
  CHSC84406  Grindelia hirsutula var. davyi Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, about 1/8 mile east of Bean Creek Road, about 1 1/4 miles (air) southeast of Little Bald Rock, about 4 miles (air) southeast of Brush Creek. 801 Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  UC480668  Hackelia californica H. F. Copeland 1929-6-11 1235 Butte Jonesville 1524 Comment
  UC480669  Hackelia californica H. F. Copeland 1920-7-8 31 Butte woods at Jonesville Comment
  JEPS113886  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada; Along old Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry creek at North Fork Feather River (Lake Oroville); mostly above the road but also occasionally below. 421 Comment
  CAS-BOT-BC306293  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  SEINET10839193  Helenium puberulum Mary Susan Taylor 1977-6-25 Taylor 1384 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  UC129380  Helianthella californica subsp. nevadensis Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  CHSC31094  Helianthella californica var. nevadensis Herb Allen McLane 1980-4-25 15 Butte 1 mi sw of Ponderosa Dam, Plumas National Forest. 390 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  UC1069459  Helianthus bolanderi A. E. Wieslander 1933-10-12 344 Butte Durham Chico Quad., Durham 45 Comment
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  CHSC47989  Heliotropium curassavicum Vernon Oswald 1983-6-28 778 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  SD175807  Heliotropium europaeum D. G. Kelch 2006-8-2 06 340 Butte Along butte Cree, north of Durham-Dayton Highway. 46 Comment
  JEPS104402  Helminthotheca echioides Lowell Ahart 2003-6-16 10285 Butte On both sides of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  CHSC44375  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  UC186060  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte near Chico Comment
  SEINET10475210  Hemizonia fitchii Mary Susan Taylor 1980-8-30 Taylor 3321 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC33907  Heracleum lanatum M. S. Taylor 1981-5-15 3744 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1158 Comment
  SEINET10454762  Heracleum lanatum Mary Susan Taylor 1975-8-31 Taylor 877 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CDA14228  Herniaria hirsuta subsp. cinerea B. Villegas, L. Bezark, H. Riley 1998-5-14 s.n. Butte Oroville Wildlife Area, Thermalito Afterbay, B2 Duck Dam, near Hwy 162 and Wilbur Rd. Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  SEINET3450929  Hesperolinon californicum Unknown 2003-6-18 10289 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  CDA2653  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. 0 Comment
  CDA17304  Heteranthera rotundifolia G. F. Hrusa, P. Kerr, S. Winterton 2004-6-25 16353 Butte Central Valley; Rice field edge along Hwy 162 E of Butte City. 15 Comment
  RSA755270  Heterocodon rariflorum L. Ahart 2009-5-15 15699 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC143628  Heteromeles arbutifolia Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CAS-BOT-BC203378  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Butte Creek on road from Butte City to Oroville Comment
  CHSC116522  Hibiscus lasiocarpos var. occidentalis B. Castro 2012-9-29 1986 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along the park road from its origin at Wildwood Ave. 132 Comment
  UCD116342  Hibiscus lasiocarpos var. occidentalis T. C. Fuller 1969-8-19 18818 Butte N. side of Nelson West Rd., ca. 3 mi. w. of Nelson Comment
  CHSC31650  Hirschfeldia incana L. Ahart 1976-4-4 1151 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 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
  CAS-BOT-BC280711  Holcus lanatus John Thomas Howell 1962-6-15 37483 Butte Magalia 731 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 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
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  POM219098  Holodiscus discolor H. F. Copeland 1928-8-14 398 Butte Top of fire-swept ridge between Jones Creek and Scotch John Creek, Neighborhood of Jonesville. 1829 Comment
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  SEINET10507464  Hordeum brachyantherum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4154 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CHSC101273  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 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
  UCD113569  Horkelia tridentata var. tridentata Joseph M. DiTomaso 1976-5-23 475 Butte Peninsula on south side of Lake Oroville. 274 Comment
  CAS-BOT-BC175964  Hypericum Lowell Ahart 1977-6-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC12408  Hypericum anagalloides Lowell Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SD130457  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  UCD169859  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  OBI5722  Hypericum anagalloides H. F. Copeland 1928-7-21 321 Butte Neighborhood of Jonesville. Woods by Jones Crk 1524 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC25260  Hypericum concinnum M. S. Taylor 1977-6-26 1385 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 548 Comment
  CHSC65564  Hypericum concinnum L. P. Janeway 1995-6-26 4820 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, just above Road 21N25A. South-facing slope. 1127 Comment
  CHSC738  Hypericum concinnum M. Underhill 1952-7-2 Butte Dry, brushy slope. 152 Comment
  UC871991  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte Chico meadows 1219 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CDA13831  Hypericum perforatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13559 Butte Butte Basin; 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC111143  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC20491  Hypericum perforatum M. S. Taylor 1975-6-25 792 Butte Abundant along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. Comment
  UC1563288  Hypericum perforatum unknown 1990-10-3 6616 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (E. Fork Canyon Creek); E. Fork Canyon Creek 259 Comment
  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
  UC600658  Ipomopsis aggregata H. F. Copeland 1928-8-14 Butte Jonesville Comment
  UCR190832  Iris 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
  CAS-BOT-BC133513  Iris Lowell Ahart 1980-5-29 2360 Butte 2 1/2 mi. north-east of Mountain House, about 50 m. E of the Oroville Quincy Highway 1100 Comment
  UC725510  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  RSA137405  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22527 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  SBBG1118  Iris hartwegii H. and M. Dearing 1938-6-21 2055 Butte 21 mi NE of Chico Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CAS-BOT-BC69903  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 mi. n. and 1/4 mi. e. of Honcut. 50 Comment
  CHSC46178  Isoetes howellii Lowell Ahart 1975-4-7 746 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCSB44144  Isoetes nuttallii Reisentz, Paul 1979-5-13 Butte Mudflats along roadside 4 miles W on Cherokee Road from Hwy 70. Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC83671  Isolepis setacea John Dittes 2002-7-9 2 -13 Butte Northern High Sierra Nevada; Plumas National Forest, between Hartman Bar Ridge and Mountain Spring House Ridge, on slope above confluence of South Branch of the Middle Fork Feather River and Pinchard Creek, ca. 0.2 air miles south-southeast of Whisky Hill. 1280 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 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
  CHSC23691  Jensia rammii M. S. Taylor 1976-5-3 1102 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  JEPS119902  Juglans hindsii Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC6672  Juncus balticus Marilyn Lee 1968-4-19 102 Butte Along W. side of Cherokee Rd., ca. 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Comment
  JEPS114976  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  JEPS113186  Juncus brachyphyllus Lowell Ahart 2007-5-22 13898 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 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
  CHSC96860  Juncus bufonius var. bufonius Lowell Ahart 2007-6-3 13970 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC61519  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte An old logging road, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC78400  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 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
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CHSC96971  Juncus ensifolius Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14279 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
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC46464  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1989-6-27 3830 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along a streamlet in a large meadow along Butte Creek. 1767 Comment
  JEPS114891  Juncus kelloggii Lowell Ahart 2008-5-30 14794 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  RSA795245  Juncus laccatus L. Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 air miles northeast of Clipper Mills. 1134 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  SEINET10613917 Image available Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 Ahart 3402 Butte Peter Ahart Ranch, ca 2 miles north and 1/2 mile east of Honcut, between Marysville and Oroville, wet bare soil around the edges of a large vernal pool in one of the farmed fields, Valley Grassland. 50 Comment
  SEINET3881795  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte About 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Valley Grassland.; 0 272 Comment
  CHSC11960  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte Near Butte Creek House, above Jonesville. 1750 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
  CHSC59023  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  JEPS114887  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
  CHSC111094  Juncus occidentalis Peter F. Zika 2011-7-7 25542 Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH). 150 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA795238  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-nothing Creek, about 150 yards north of Lumpkin Ridge Road., About 0.5 miles southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 air miles northeast of Feather Falls. 1225 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  JEPS114823  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte below the high water mark of Lake Oroville, on the N side of the South Fork of the Feather River, about 50 yds E of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 243 Comment
  UCD142364  Juncus tenuis G. F. Hrusa; T. D. Wilfred 1997-5-1 13700 A Butte NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  CHSC96963  Juncus triformis Lowell Ahart 2007-6-12 14070 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  RSA726661  Juncus triformis L. Ahart 2007-6-12 14075 Butte 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  RSA727520  Juncus usitatus L. Ahart 2007-7-31 14400 -B Butte On the south strand of the Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  CDA41422  Keckiella breviflora subsp. breviflora Ball & Raynor May 1945 s.n. Butte Chico. 0 Comment
  CHSC38692  Keckiella breviflora var. glabrisepala Vernon Oswald 1983-5-18 502 Butte Upper Bidwell Park, Chico, near Yahi Trail 100 ft w of Parking Area P (2.0 mi e of the power lines). 195 Comment
  CHSC39016  Keckiella breviflora var. glabrisepala J. D. Jokerst 1983-6-21 1817 Butte Common along the cliff edge of Table Mountain. North edge of Coal Cr Canyon. West side of North Table Mt. 304 Comment
  NY790171  Keckiella breviflora var. glabrisepala A. A. Heller 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC10642  Kickxia elatine Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119918  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS117220  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC109148  Koelreuteria paniculata Lowell Ahart 2012-5-14 18066 Butte On the south side of the paved road, west of the horse trail, about 1/3 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 74 Comment
  CHSC94351  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA2619  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. 0 Comment
  SEINET9775665 Image available Lactuca serriola Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC30752  Lagophylla glandulosa M. S. Taylor 1980-8-15 3251 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  JEPS94817  Lagophylla glandulosa Lowell Ahart 1998-9-11 8059 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CAS-BOT-BC341294  Lagophylla glandulosa Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC82103  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the west edge of the Midway, about 1 mile north of Richvale. 30 Comment
  SEINET10497957  Lamium amplexicaule Mary Susan Taylor 1982-4-28 Taylor 4379 Butte T17N R1E sec 15 & 16. Pennington quad. Along road loop around HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 54 ft. 16 Comment
  CHSC274  Lasthenia californica H. Lowe 1963-3-15 Butte Stilson Canyon, Little Chico Creek. 91 Comment
  SEINET11804892  Lasthenia fremontii R. T. Retuta 1978-1 20 Butte ca 5 ft E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico 62 Comment
  UCSB63630  Lasthenia fremontii Long, N. 1974-4-23 Butte Along side Cana Pine Road, ca. yards off Highway 99 and ca. 12.7 mi. NW of Chico Comment
  HSC67550  Lasthenia microglossa J. P. Smith 1973-3-22 5919 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SEINET955243  Lathyrus californicus Carl B. Wolf 1937-1 8786 Butte Sacramento Valley. 1 mi. no. of Durham 46 Comment
  CHSC29843  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CDA15388  Lathyrus nevadensis G. F. Hrusa 1997-4-3 13690 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  RSA4423  Lathyrus nevadensis subsp. lanceolatus E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 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
  CAS-BOT-BC321779  Layia fremontii H. E. Brown 1897-4-15 184 Butte Near Clear Creek Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CHSC3453  Layia fremontii Judy Potter 1966-3-21 Butte Roadside-Pentz Road 1 mile east of US 99E. Comment
  CHSC3871  Layia fremontii Gary Dutton 1966-3-14 112 Butte Found 1 mile into Upper Bidwell Park. From entrance. Comment
  CHSC42915  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, neaar the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CAS-BOT-BC12912  Lepidium strictum Lowell Ahart 1962-4-10 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC273955  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC29379  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3686 Butte 4.6 mi s of Butte/Tehama County line on Hwy 32; roadside. Comment
  POM364518  Leptosiphon ciliatus L. Ahart, P. Ahart 1984-5-28 4645 Butte About 1 mi NE of West Branch Bridge, ca. 2 mi S. of Old Yankee Hill, ca. 16 mi. NE of Oroville 450 Comment
  CHSC101307  Leptosiphon filipes Lowell Ahart 2009-4-22 15586 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
  CHSC46222  Leptosiphon filipes Pauleen Broyles 1987-6-19 1057 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC78260  Leptosiphon filipes Lowell Ahart 2000-6-27 8526 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  RSA725052  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1/0 air km west of Mountain House. 884 Comment
  POM183144  Leptosiphon harknessii H. F. Copeland 1930-7-26 1307 Butte Jonesville. 1677 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  UCD69222  Lessingia nemaclada D. Sanchez-Mata; P. Rodriguez-Rojo, D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  SEINET10474781  Lessingia nemaclada Mary Susan Taylor 1978-9-9 Taylor 1918 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  SEINET10839206  Lessingia nemaclada Mary Susan Taylor 1979-8-4 Taylor 2171 A Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  POM195743  Leucophysalis nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  CHSC42586  Ligusticum californicum Vernon Oswald 1985-6-30 1870 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  UC1609486  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n Honcut (on w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC509476  Lilium kelleyanum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham 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
  CHSC31850  Limnanthes alba L. Ahart 1971-4-21 75 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCSB45759  Limnanthes douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road, 6 miles north on Derrick Road from Table Mt. Road Comment
  CHSC54166  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 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
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CAS-BOT-BC45925  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CAS-BOT-BC45926  Limnanthes floccosa subsp. californica Charles T. Mason, Jr. 1949-4-24 1255 Butte 8 miles N.W. of Oroville along the Oroville-Chico road Comment
  CHSC29027  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-20 487 Butte Ca 50 m NW of the jct of Skyway and Bruce Rd (ca 0.5 mi E of Hwy 99). Comment
  HSC85944  Limnanthes floccosa subsp. californica J. Hunter 1986-3-30 39 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  UC203613  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 mi from Oroville (on Chico-Oroville road, below blue oak belt) Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 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
  JEPS122228  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  UC880250  Linanthus filipes A. A. Heller 1915-7-10 12074 Butte near Skyhigh (on the Oroville-Quincy road); Sierra Nevada 1066 Comment
  UC478476  Linanthus harknessii E. B. Copeland 1931-7-1 681 Butte Butte Creek Jonesville 1500 Comment
  CHSC116286  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Knunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS120608  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 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. Comment
  CHSC112204  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, southwest of the dredge pond, west of the barn, about 3 1/4 miles (air) northeast of Honcut. 45 Comment
  CHSC31671  Lipocarpha micrantha L. Ahart 1973-8-13 271 Butte In North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94275  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC36126  Lithocarpus densiflorus var. densiflorus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54409 Butte Near Mountain House on Oroville - Quincy road 1051 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CAS-BOT-BC36588  Lithocarpus densiflorus var. echinoides A. A. Heller 1913-6-7 10798 Butte Near Stirling 1074 Comment
  SEINET10477991  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1980-5-27 Taylor 2642 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
  CHSC96229  Lithophragma bolanderi R. Fischer 2006-4-21 987 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at bottom of 10 Mile House Road, ca. 250 ft s of gated park property line.. 228 Comment
  CAS-BOT-BC430882  Lithophragma bolanderi Lowell Ahart 1982-5-8 3421 Butte At the Forbestown Res. 700 Comment
  CHSC46271  Lithophragma campanulatum Vernon Oswald 1989-5-8 3761 Butte Feather Falls Trail, between the trailhead at the end of Bryant Ravine Rd and Frey Creek. 731 Comment
  UCD102726  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  UC137062  Lithophragma parviflorum var. trifoliatum Mrs. R. M. Austin Apr. 1896 263 Butte Bluffs Little Chico Creek Little Chico Creek; Bluffs Little Chico Creek Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC317348  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville, above hotel 1676 Comment
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CAS-BOT-BC342139  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CHSC393  Logfia filaginoides B. Richardson 1929-4-21 Butte Flats above Chico. 67 Comment
  CAS-BOT-BC342383  Logfia gallica John Thomas Howell 1961-9-22 36742 Butte Bottom of Feather River, Oroville 53 Comment
  CHSC46110  Lomatium marginatum J. D. Jokerst 1980-6-8 811 Butte Ca 220 meters ENE of the junction of the Skyway and Coultelenc Rd. Magalia Serpentine. Comment
  JEPS120528  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km sutheast of Rim Road / Ponderosa Way. Comment
  CHSC40435  Lomatium utriculatum Lowell Ahart 1985-4-29 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CHSC40314  Lonicera hispidula Lowell Ahart 1985-6-30 5082 Butte Along the Forbestown Ditch, about 21/2miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte 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
  JEPS115583  Lotus corniculatus Lowell Ahart 2009-5-23 15748 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  UC1609037  Lotus nevadensis Lowell Ahart 1993-7-31 7135 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  SEINET10940035  Lotus nevadensis Lowell Ahart 1985-5-31 Ahart 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 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
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET10452004  Lotus purshianus Mary Susan Taylor 1978-7-18 Taylor 1689 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS121788  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  CHSC66360  Ludwigia peploides subsp. peploides Vernon H. Oswald 1996-6-20 7827 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 drainage in the SW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC48520  Lupinus albicaulis Vernon Oswald 1984-5-23 1205 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. 463 Comment
  UC725344  Lupinus albicaulis A. A. Heller 1941-5-22 16138 Butte on State Highway #24 about a half mi w Jarboe Pass; w of Jarboe Pass Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CAS-BOT-BC196251  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  CHSC57378  Lupinus bicolor Sean Brown 1990-4-17 15 Butte Vic. covered bridge, s bank of Butte Ck., ca. 11.6 km ese of Chico. 120 Comment
  CHSC90362  Lupinus bicolor Andy Winkler 1980-4-15 4 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  HSC32403  Lupinus bicolor Kitsy Kelly 1974-4-20 22 Butte Table Mtn. Volcanic area Comment
  RSA754861  Lupinus bicolor subsp. tridentatus L. Ahart 2009-4-26 15619 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC39973  Lupinus bicolor var. tridentatus L. Ahart; P. Ahart 1983-6-26 4123 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  SEINET12161336  Lupinus densiflorus Unknown 1978-1 10 Butte ca 20 mi SE of The Pentz, Pentz Magalia Hwy junc, 24kmSWE of Chico 140 Comment
  SEINET10450558  Lupinus formosus Lowell Ahart 1984-6-8 Ahart 4682 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  RSA31972  Lupinus formosus var. robustus A. A. Heller 1942-5-18 16478 Butte A short distance west of the Hooker Oak, east of Chico. Comment
  RSA126009  Lupinus grayi E. K. Balls 1957-5-22 22516 Butte Tobins N fork Feather river, Hwy 40 640 Comment
  RSA337376  Lupinus latifolius subsp. longipes L. Ahart 1984-6-8 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Road, ca. 6 miles northeast of Ponderosa Dam, ca. 4 miles southeast of Feather Falls. 550 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  RSA699517  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 549 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  CHSC34684  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  SEINET10452645  Lupinus nanus Heidi H. Schmidt 1993-6-15 Schmidt 865 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC93460  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  SEINET10484149  Lupinus nanus var. vallicola Mary Susan Taylor 1980-5-27 Taylor 2720 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  RSA32779  Lupinus vallicola subsp. vallicola A. A. Heller 1938-4-23 15046 Butte Along the Feather River Highway near the bridge over the river east of Oroville. Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  JEPS124416  Luzula cascadensis Lowell Ahart 2015-6-16 20240 Butte 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. Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  UC600808  Luzula cascadensis H. F. Copeland 1920-7-29 71 Butte Scotch John Meadows, Jonesville Comment
  UC398896  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC115290  Luzula macrantha Lowell Ahart 2015-4-27 20085 Butte On both sides of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC118497  Luzula macrantha L. P. Janeway 2016-5-9 11951 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC32366  Luzula macrantha J. D. Jokerst 1980-4-18 607 Butte 1.0 mi S of the town of Nimshew where to road makes a sharp turn to the W. 701 Comment
  CHSC36524  Luzula macrantha L. Ahart 1982-5-8 3411 Butte On the north slope above the dirt road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CAS-BOT-BC441208  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3.5 miles SW of Oroville 33 Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge Comment
  CHSC38295  Lychnis coronaria Vernon Oswald 1983-5-31 585 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 300 ft w of Day Camp. 91 Comment
  SEINET10498037  Lycopus americanus Mary Susan Taylor 1975-10-3 Taylor 934 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC28802  Lythrum hyssopifolia J. D. Jokerst 1979-7-6 404 Butte Top of north Table Mt, ca. 100 m north of Cherokee Rd. +/- nw of intersection of Cherokee Rd. Comment
  CHSC46641  Lythrum hyssopifolia Lowell Ahart 1989-7-4 6364 Butte Growing in a mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  SEINET10452842  Lythrum hyssopifolia Mary Susan Taylor 1975-6-25 Taylor 794 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
  CDA18068  Lythrum salicaria B. Villegas 1999-7-1 s.n. Butte W side of Hwy 70 at Oroville. 0 Comment
  CHSC96034  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  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
  UCD80090  Madia elegans CNPS SN Foothill Team 2005-5-5 SNFN 0158 e Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  CHSC38378  Madia elegans subsp. densifolia Vernon Oswald 1983-6-20 725 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. Near Chico Creek. 207 Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 Butte 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. 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
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  SEINET10474828  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2672 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10904899  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2707 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  JEPS121915  Maianthemum stellatum Lowell Ahart 2014-7-10 19620 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS87518  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC106871  Malva parviflora Lowell Ahart 2011-5-9 17352 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC38549  Malva parviflora Vernon Oswald 1983-5-2 406 Butte Upper Bidwell Park, Chico, along n-w edge of Hooker Oak Recreation Area. 79 Comment
  JEPS119994  Malva parviflora Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 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
  CHSC34965  Malvella leprosa R. A. Schlising 1981-9-20 4195 Butte 3.4 mi W of railroad crossing in Richvale, on Richvale West Road. Comment
  CHSC66671  Malvella leprosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8094 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC101809  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC81525  Marrubium vulgare Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC54509  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1991-8-19 4837 Butte Northwest lake in a cluster of three mapped lakes on the north side of Forest Rd. 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC33121  Matricaria discoidea M. S. Taylor 1981-5-15 3743 Butte Jct of 22N92 and 23N00.1, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 975 Comment
  CHSC42459  Matricaria discoidea Lowell Ahart 1987-5-6 5504 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC40914  Meconella californica Lowell Ahart 1973-4-15 204 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified 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
  CHSC45286  Medicago lupulina Vernon Oswald 1987-5-12 2387 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, near the Crouch Ditch Dam. 79 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC97690  Medicago polymorpha Lowell Ahart 2007-11-3 14571 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC99634  Medicago polymorpha H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. 57 Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  SEINET10902002  Melica Mary Susan Taylor 1978-5-6 Taylor 1586 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  CHSC94296  Melica bulbosa Lowell Ahart 2006-7-16 13009 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
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  JEPS116095  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS48096  Melica californica Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2691 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  SEINET10599356  Melica californica Lawrence P. Janeway 1995-6-19 Janeway 4797 Butte Cascade quad. T21N R6E S25 SE1/4 NW1/4. About 0.5 mi east of the western end of Jackson Ranch Ridge. Open areas in open ponderosa pine dominated mixed conifer forest. 1097 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC49558  Melica fugax Vernon Oswald; Lowell Ahart 1987-5-14 2399 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. In forest on the w side of the creek. 1780 Comment
  UC600752  Melica fugax H. F. Copeland 1929-6-12 1210 Butte near mouth of Willow Creek (Jonesville); Jonesville 1524 Comment
  CHSC36067  Melica geyeri J. D. Jokerst; R. A. Schlising 1982-6-4 1586 Butte N of Concow Basin. 853 Comment
  CDA15361  Melica harfordii G. F. Hrusa 1997-5-29 13809 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Scattered in dry, deep shade of coniferous forest. Perennial. Comment
  CAS-BOT-BC281019  Melica stricta Lowell Ahart 1981-8-15 3049 Butte At base of cliffs near the dirt road from Coon Hollow to Poison Springs, ca 1 mile SE of Snow Mt, ca 15 miles NE of Inskip 2000 Comment
  UC1562308  Melica stricta Vernon Oswald and Lowell Ahart 1990-7-19 4374 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, 0.6 mi w of the Plumas County line) 1950 Comment
  CAS-BOT-BC262505  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CHSC38830  Melica torreyana Vernon Oswald 1983-3-7 135 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 300 ft e of the Golf Course. 91 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  SEINET10599678  Melica torreyana Lowell Ahart 1989-5-10 Ahart 6221 Butte About 1/10 mile north-west of the West branch Bridge across Lake Oroville. Foothill Woodland. Common, growing on dry red rocky soil along a dirt road near a small stream near the lake. 290 Comment
  CHSC24804  Melilotus indicus E. L. Rilla 1976-9-18 28 Butte .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
  JEPS102339  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte 8 mi W of Biggs (S side of Biggs - Princeton road, about 1/2 mi E of Butte Creek) 21 Comment
  CHSC29816  Melissa officinalis M. S. Taylor; J. D. Jokerst 1979-10-13 2252 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow rd., ca. 5 mi e of Paradise. 426 Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte 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. Comment
  CHSC108311  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC429040  Micranthes nidifica Lowell Ahart 1980-2-23 2026 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC429074  Micranthes odontoloma E. B. Copeland 1931-7-20 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 1500 Comment
  CAS-BOT-BC348698  Microseris acuminata Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC348705  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte 8 miles north of Oroville Comment
  CHSC31604  Microseris acuminata L. Ahart 1978-5-1 1700 Butte Peter Ahart Ranch, Honcut. Along edge of wash. 50 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
  SEINET10570407  Mimulus Mary Susan Taylor 1978-7-21 Taylor 1825 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  JEPS86871  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte 4.4. mi ne Keefer Road (along Cohasset Hwy, then 0.4-0.6 mi s along private dirt road, Griffith residence); Cohasset Ridge 400 Comment
  SEINET10570196  Mimulus bifidus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7043 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine, woody Plant, corolla apricot color. 701 Comment
  JEPS5545  Mimulus glaucescens R. F. Hoover 1937-5-18 2235 Butte 3 mi n Chico Comment
  RSA0087957  Mimulus glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain.Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Carpenter Ridge Rd. intersection along old logging road. 880 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area Comment
  POM252815  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte The treeless, undulating plain of Table Mountain. 305 Comment
  POM5161  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  UCD96094  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  JEPS115182  Mimulus moniliformis Lowell Ahart 2009-6-30 15978 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
  CHSC62134  Mimulus moschatus L. P. Janeway 1993-6-23 4403 Butte Plumas National Forest. Oroville Ranger District. Big Bar Compartment. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  POM308489  Mimulus moschatus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3082 Butte Feather River Hwy. Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC103748  Mimulus torreyi Mrs. R. M. Austin July 1896 162 Butte Colby Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  POM43820  Mimulus tricolor C. C. Bruce 1897-05 2107 Butte [No location data on label] Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  UCSC008596  Minuartia californica Randall Morgan 2008-4-1 4840 Butte Originally from Ahart Ranch Comment
  CHSC90229  Minuartia cismontana Camela J. Ott 1989-4-18 15 Butte Population ca 150 yds se of junction of Cohasset and Vilas Rds., ca. 12 mi e of Chico. 640 Comment
  CAS-BOT-BC388609  Minuartia douglasii John Thomas Howell 1962-6-16 37556 Butte Magalia 731 Comment
  SEINET8391884  Minuartia douglasii Unknown 1989-4-18 3370 Butte above Lunt Rd., 0.4 mi. n. of Hwy. #70. Comment
  RSA4433  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CAS-BOT-BC435071  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CDA3377  Mollugo verticillata T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC60102  Monardella breweri subsp. lanceolata B. Castro; J. Jurewicz 1991-9-16 447 Butte Ca 23 air mi NE of Oroville, ca 4 mi NE of Mtn. House along Oro-Quincy Hwy, on E side of USFS Rd 22N80 ca 0.2 mi NE of its jcn with the Oro-Quincy Hwy. 1203 Comment
  UCSB63980  Monardella douglasii Jokerst, James; Castro, Barbara 1992-5-19 Butte Powerline site in the unnamed canyon N of Nugen Canyon; on the S side of Neal Rd; near the Butte County Sanitary Landfill: T21N R2E NEW NE'/i Sect. 14; Valley and Foothill Grassland within Blue Oak Woodland; Cascade Range Foothills 83 Comment
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Jul 19 2018
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CHSC62561  Monardella odoratissima subsp. pallida B. Castro 1993-8-3 493 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca. 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  UC525885  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  UC600443  Monardella odoratissima subsp. pallida E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CHSC102512  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  UC1609442  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  RSA718313  Monardella villosa subsp. sheltonii L. Ahart 2006-6-9 12655 Butte on east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 386 Comment
  JEPS17021  Monardella villosa subsp. villosa Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4724 Butte Along Butte Creek Canyon side, on Humbug Road, one-half mile below Nimshew. 701 Comment
  CDA2667  Monochoria vaginalis T. C. Fuller 1976-8-1 20165 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC100836  Montia linearis R. A. Schlising; R. Banchero 1980-6-2 3633 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC45101  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
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  RSA325117  Montia parvifolia M. S. Taylor 1981-5-7 3634 Butte N side of Ponderosa Way, N of the Sucker Creek bridge, 4 air miles SW of Feather Falls community. 366 Comment
  CHSC104007  Morus alba Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16743 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC260535  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  UCD86725  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 miles SSE of Butte Meadow. 1493 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC262586  Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  CHSC59050  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte On the sides of a lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS124199  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC29221  Myosurus minimus subsp. minimus M. S. Taylor; J. D. Jokerst 1980-3-28 2398 Butte In vernal pool, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  CHSC94794  Myriophyllum aquaticum L. P. Janeway; B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  SEINET10452818  Myriophyllum exalbescens Mary Susan Taylor 1982-5-22 Taylor 4497 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC35960  Myriophyllum spicatum M. S. Taylor 1982-5-22 4497 Butte Graylodge Waterfowl Refuge, aquatic in quiet water at end of Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  UCD150362  Najas guadalupensis subsp. guadalupensis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  UC1069123  Nama lobbii P. L. Johannsen 1936-7-16 918 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  CHSC35662  Nassella pulchra R. E. Preston 1982-4-22 250 Butte In saddle of ridge ca. 0.3 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 353 Comment
  UC133706  Navarretia divaricata Mrs. R. M. Austin Jul 1896 827 Butte Sutton House Comment
  CHSC30686  Navarretia filicaulis M. S. Taylor; R. Schlising 1980-7-6 3063 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 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
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  JEPS107886  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  CHSC1293  Navarretia intertexta M. Roberson 1956-5-21 Butte SW of Paradise near Skyway. 426 Comment
  CHSC113518  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC11952  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. In 'Scotch John' meadow. 1650 Comment
  CHSC31164  Navarretia leptalea M. S. Taylor 1978-7-19 1762 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  CHSC71122  Navarretia leucocephala Jan Monelo 1989-4-25 10 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  CHSC46223  Navarretia pubescens Pauleen Broyles 1987-6-19 1058 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. Along a dirt road. 360 Comment
  CHSC91111  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CHSC31804  Navarretia tagetina L. Ahart 1977-5-8 1360 Butte Peter Ahart Ranch, Honcut. Pasture fields. 50 Comment
  CHSC37826  Navarretia tagetina D. H. Ikeda 1980-5-10 351 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  CHSC81287  Navarretia tagetina J. Trizzino 2001-4-25 57 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  SEINET3860241  Navarretia tagetina Leigh A. Johnson 2004-5-15 04 -064 Butte Eastbound from Chico on Skyway Drive, in 10 meters between large pullover area and fence, 4.2 miles west of Skyway crossroad; 5.3 miles west of Neal jct.; 0 209 Comment
  UC856822  Navarretia tagetina A. A. Heller 1915-5-16 11872 Butte 3 mi from Chico (Chico-Centerville road) Comment
  CHSC39042  Navarretia viscidula subsp. purpurea R. A. Schlising 1983-8-6 4431 Butte NE of Oroville Dam. Along Highway 162. 320 Comment
  CHSC29401  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-6-17 3737 a Butte N of Magalia and De Sabla along Skyway, 1.2 mi NE of jct with Coutelenc Road at Lovelock. Comment
  CHSC40403  Nemacladus capillaris Lowell Ahart 1985-6-17 5059 Butte Near a small seep, 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  SEINET10938893  Nemacladus capillaris Lowell Ahart 1985-6-17 Ahart 5059 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SD122582  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown. North side of reservoir 370 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  CHSC88986  Nemophila menziesii Christine Hantelman 2000-2-18 6 Butte 1.5 mi east on Wookey Road. 112 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC38460  Nemophila menziesii var. menziesii Vernon Oswald 1983-3-14 179 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.75 mi e of the power lines. 297 Comment
  CHSC101081  Nemophila pedunculata Lowell Ahart; John Dittes 2009-3-20 15499 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC42354  Nemophila spatulata Lowell Ahart 1987-5-12 5641 Butte On damp bare broken black lava, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  CHSC113103  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 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
  CHSC42104  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CDA41165  Nicotiana quadrivalvis L. Ahart, Vernon H. Oswald 1999-8-13 8136 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CAS-BOT-BC400069  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  POM197244  Odontostomum hartwegii H. F. Copeland 1929-5-4 1130 Butte Canyon of Chico Creek. Comment
  CDA13898  Orobanche fasciculata G. F. Hrusa, T. D. Wilfred 1997-5-8 13755 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  UC1609416  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte about 1/8 mile south west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City 1463 Comment
  SEINET4854291  Orthocarpus bicolor Unknown 1902-5-10 5519 Butte Berry Canyon, (near Clear Creek). Comment
  POM286324  Orthocarpus erianthus Lyman D. Benson 1935-3-27 6366 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  CAS-BOT-BC6995  Orthocarpus lacerus Amos Arthur Heller; H. E. Brown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek) Comment
  RSA715538B  Orthocarpus lacerus L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET12328377  Orthocarpus lacerus M. S. Taylor, Oswald, V. 1984-1 5393 Butte S side of Humbug Rd, ca 2 mi SW of Nimshew, ca 12 air mi NE of Chico Comment
  POM15361  Orthocarpus purpurascens E. B. Copeland 1903-4-10 3035 Butte Chico. Comment
  CHSC34814  Osmorhiza chilensis M. S. Taylor 1981-5-14 3712 Butte N side of Four Mile Ridge, s of Sly Creek, ca. 1.5 mi ne of Mt House on Oroville-Quincy Hwy. 853 Comment
  CHSC44181  Osmorhiza occidentalis V. Oswald; L. Ahart 1988-7-13 3589 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  CDA38814  Oxalis pes-caprae L. Ahart 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC40489  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 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
  CAS-BOT-BC316887  Packera eurycephala var. lewisrosei A. Heller 1938-5-28 15115 Butte 23 miles from Oroville on Highway 24. Comment
  CHSC109848  Packera eurycephala var. lewisrosei L. P. Janeway 2012-6-7 10864 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UC1972927  Packera eurycephala var. lewisrosei Catherine Schnurrenberger 2011-7-8 Butte Near Flea Mountain, off of Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line. 914 Comment
  SEINET11805350  Packera eurycephala var. lewisrosei W. Knight, Knight, I. 1981-1 4115 Butte along Feather River Highway near Pulga Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CHSC28619  Panicum acuminatum M. S. Taylor 1979-10-3 2218 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  CHSC42376  Panicum acuminatum Lowell Ahart 1987-5-27 5715 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
  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
  CHSC44916  Panicum miliaceum Lowell Ahart 1988-7-10 6123 Butte At the intersection of Lower Honcut Road and Palermo Honcut Highway, Honcut, about 12 miles south of Oroville. 32 Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  SEINET10508285  Paspalum urvillei Mary Susan Taylor 1975-10-4 Taylor 952 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC29979  Pectocarya pusilla Lowell Ahart 1980-5-17 2290 Butte About .5 mi SE of Hurleton, in bottom of wash SE of Oak Grove Cemetery. 600 Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 Butte In the road gutter, along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. 320 Comment
  JEPS108767  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC27958  Pellaea andromedifolia Sam M. Grossberg 1978-4-22 21 Butte North Table Mountain, ca. 2.5 mi nne of Cherokee Road, 6.0 mi n of Oroville. 365 Comment
  CAS-BOT-BC71202  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CAS-BOT-BC69332  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 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
  SEINET10470231  Pellaea brachyptera Lowell Ahart 1985-6-17 Ahart 5053 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  SEINET194311  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 miles o\\from Oroville on the Feather River Highway in Arid Transition Zone. Comment
  CHSC63930  Penstemon heterophyllus var. purdyi Larry A. Stauffer 1990-4-22 28 Butte About 310 feet north-west of north end of Horseshoe Lake. Upper Bidwell Park, about 5 miles north-east of Chico, 0.5 mile east-north-east from park entrance. 76 Comment
  NY601766  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles north of Chico. Comment
  CDA41857  Penstemon laetus subsp. leptosepalus L. Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  NY604463  Penstemon laetus var. laetus L. Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles northeast of Feather Falls 1280.2 Comment
  CHSC44704  Penstemon laetus var. leptosepalus R. Banchero 1980-6-12 215 Butte Jct of Humbolt Rd and Hwy 32. 1024 Comment
  UC887104  Penstemon laetus var. leptosepalus Lewis S. Rose 1939-6-7 39236 Butte 3 mi s Pulga (S Fork Feather River); , s of Pulga 609 Comment
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Jul 24 2008
  CHSC44723  Penstemon neotericus R. Banchero 1980-6-26 265 Butte Along Humbolt Rd 3.1 mi SW of its jct with the Skyway, 1.9 mi NE of its jct with Hwy 32. 1365 Comment
  CHSC107594  Penstemon newberryi var. newberryi Lowell Ahart 2011-7-9 17577 Butte Northwest part 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
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  UC600435  Penstemon newberryi var. newberryi H. F. Copeland 1932-7-19 Butte Jonesville, above Butte Creek opposite the Fishersman's Trail Comment
  UCD137730  Pentagramma triangularis L. Ahart 1974-3-18 329 Butte Along North Honocut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 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
  CAS-BOT-BC77080  Pentagramma triangularis subsp. triangularis John Thomas Howell 1959-9-26 35091 Butte Sierra Nevada - Pulga Bridge, N. Fk. Feather River 411 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 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
  CHSC90139  Pentagramma triangularis subsp. triangularis C. J. Kalberg 1983-4-11 17 Butte Upper Bidwell Park, Chico, about 3.2 mi northeast of junction of Manzanita and Wildwood Ave., 500 yds north of Wildwood Ave. 243 Comment
  JEPS116132  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
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  RSA459108  Perideridia parishii subsp. latifolia H. F. Copeland 1928-8-29 1064 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  UCD99344  Persicaria amphibia Collector unknown 1927-12-16 1406 Butte Biggs Rice Station. Comment
  CHSC109766  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC55245  Persicaria hydropiperoides Lowell Ahart 1991-9-14 6716 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC45861  Persicaria lapathifolia Lowell Ahart 1974-11-9 680 Butte On the bottom of a drained rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC94487  Persicaria maculosa Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CHSC92380  Persicaria punctata Lowell Ahart 2005-11-12 12489 Butte Bottom of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 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
  CHSC116976  Petrorhagia dubia Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS114739  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET10932244  Petrorhagia velutina Mary Susan Taylor 1982-5-2 Taylor 4382 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  SEINET10497012  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4251 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  CDA40399  Phacelia mutabilis T. C. Fuller 1962-7-12 9196 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  RSA134007  Phacelia mutabilis L. R. Heckard 1956-8-6 825 Butte Along Butte Creek just west of Jonesville. 1372 Comment
  UC426940  Phacelia procera E. B. Copeland 1930-7-11 447 Butte near Butte Creek; Jonesville 1550 Comment
  UC1187650  Phacelia purpusii Lincoln Constance, Elwood Molseed, John Weiler 1960-6-12 3677 Butte three mi above junction of Highway 32 and Butte Meadows road (33 min ne of Chico) 1219 Comment
  UCR80229  Phacelia racemosa H. F. Copeland 1931-6-9 1538 Butte Jonesville, near Jones Creek 1529 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CHSC78113  Phalaris brachystachys Shelly Pirtle 1997-4-9 32 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Fields. Comment
  HSC23316  Phalaris minor B. Wilson 1968-5-12 192 Butte Chico, in front of Continental Nut Co. on Esplanade. 61 Comment
  CHSC58291  Phalaris paradoxa Lowell Ahart 1992-5-23 6776 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10716717  Phalaris paradoxa A. Arthur Heller 1919-8-13 Heller 13352 Butte Rice fields between Nelson and Richvale in moist adobe Comment
  CHSC20606  Philadelphus lewisii Robert A. Schlising 1964-6-11 2719 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CAS-BOT-BC250868  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of the Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville 259 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC116677  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yaards north of the intersection of Smullin Road and Ahart Road, east side of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC102794  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  SEINET10492851  Phoradendron villosum Mary Susan Taylor 1979-10-13 Taylor 2256 Butte T22N R4E sw 1/4 sec 21. Yellow Pine Forest and Foothill Woodland transition zone on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.0 mi N of its jct with Concow Road, ca. 3 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA572043  Pinus contorta var. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville. 1524 Comment
  CHSC110234  Pinus jeffreyi L. P. Janeway 2012-10-11 11074 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  SD9  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 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
  CHSC54458  Piperia colemanii Vernon H. Oswald 1991-7-15 4731 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its juction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  UC600637  Piperia colemanii H. F. Copeland 1932-7-23 Butte above Jonesville hotel; Jonesville 1600 Comment
  SEINET10872491  Piperia elegans Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4240 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC103965  Piperia elongata Lowell Ahart 2010-5-7 16618 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CAS-BOT-BC136583  Piperia leptopetala Chester Dudley 1940-6-1 s.n. Butte Field redacted by CAS, contact the data manager for more information Comment
  CHSC27196  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UC2026875  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  SEINET10497366  Plagiobothrys austiniae Lowell Ahart 1984-4-6 Ahart 4544 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC46250  Plagiobothrys bracteatus Vernon Oswald 1989-4-19 3739 Butte Wurlitzer Unit, Vina Plains Preserve. Along the upper s bank of Pine Creek just downstream from the mouth of Singer Creek. Also in other pools between Pine and Singer Creeks. 57 Comment
  UC398679  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte 7 mi n Chico; Rock Creek Comment
  UC79243  Plagiobothrys canescens Mrs. R. M. Austin May 1883 Butte Comment
  RSA32846  Plagiobothrys fulvus var. campestris A. A. Heller 1938-4-23 15044 Butte On the Feather River Highway 1.5 miles form Oroville. Comment
  SBBG128086  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 a Butte ca. 1 mi E of Chico, between hwy 32 and Humboldt Rd 76 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UC1303133  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte 4 mi e Chico Comment
  OBI20593  Plagiobothrys greenei Lewis S. Rose 1967-5-6 67056 Butte Oroville 52 Comment
  CHSC11862  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  UC478472  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte near head South Willow Creek (Jonesville); head South Willow Creek, Jonesville 1700 Comment
  CHSC29051  Plagiobothrys leptocladus R. A. Schlising 1980-4-14 3561 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; at dried margins of pools that contained standing water in winter. Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  SEINET10497608  Plagiobothrys scriptus Mary Susan Taylor 1980-3-28 Taylor 2405 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  POM71349  Plagiobothrys stipitatus C. C. Bruce 1897-05 1928 Butte [No locality information provided] Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC47455  Plantago coronopus Lowell Ahart 1968-5-8 19 Butte Growing along roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 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
  CHSC110440  Plantago elongata B. Castro 2007-3-29 1618 Butte Sacramento Valley. Ca 0.9 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. Around edges of distinct but shallow, flat-bottomed vernal pool, ca 80 ft E of Cohasset Rd and 50 ft N of Levell Along Sycamore Creek. 57 Comment
  CHSC24953  Plantago elongata Ron Stewart 1976-3-24 Butte Ca 40 yds sw of the Broyles Road, -Hwy 99 intersection. 73 Comment
  HSC32591  Plantago erecta Linda M. Barker 1974-4-20 161 Butte Table Mtn., Central Valley 305 Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 Comment
  CHSC37374  Plantago lanceolata R. A. Schlising 1981-9-20 4201 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC38588  Platanus acerifolia Vernon Oswald 1983-7-21 889 Butte Upper Bidwell Park, Chico, at the n-e edge of the parking lot at the Horse Arena. 79 Comment
  RSA755342  Platanus racemosa L. Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  SEINET10871901  Platanus racemosa Lowell Ahart 1984-4-3 Ahart 4535 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC109100  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  JEPS119841  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10840002  Plectritis ciliosa Mary Susan Taylor 1981-4-5 Taylor 3491 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  RSA754580  Plectritis ciliosa subsp. insignis L. Ahart 2009-4-22 15604 A Butte S side of Guardians Trail, S of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC8589  Poa annua D. McClain 1969-3-30 34 Butte Across Warner St. from the South Gymnasium on Chico State College campus, Chico. 57 Comment
  SEINET10508290  Poa bolanderi Lowell Ahart 1985-7-16 Ahart 5147 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1829 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC61197  Poa howellii Vernon H. Oswald 1993-5-18 5401 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, between the footbridge over the creek and the side trail to 'Lil' Falls, ca. 2 mi (air) WNW of Magalia. Along the trail near the bottom of the canyon. 609 Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte 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. Comment
  LA12615  Poa pringlei E. B. Copeland; 1931-6-22 606 Butte Jonesville, at The Summit 609 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 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-BC244159  Poa sierrae Lowell Ahart 1980-5-29 2355 Butte 5 miles NE of Mountain House 1100 Comment
  SBBG128019  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, ca. 200 yards W of the entrance to the Disc Golf Area, W of Hwy 32, Upper Bidwell Park, ca. 5 mi (air) NE of Chico 350 Comment
  SD106157  Pogogyne douglasii subsp. douglasii W. L. Jepson 1932-5-9 16367 Butte East of Cana Comment
  CHSC773  Pogogyne zizyphoroides V. Holt 1935-5-7 Butte Centerville Rd. 60 Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  UC726650  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte on US Highway 99E, near the Cana Road. Hartweg got it in this neighborhood, in Valle Sacramento. Comment
  SEINET10498988  Pogogyne zizyphoroides Mary Susan Taylor 1978-5-7 Taylor 1613 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC100480  Polanisia dodecandra subsp. trachysperma Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15437 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC14112  Polanisia dodecandra subsp. trachysperma F. T. Griggs 1974-8-8 143 Butte Growing on top of a sandbar in the Sacramento River, between Hamilton City Bridge and the mouth of Big Chico Creek. Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  SEINET13711411  Polanisia dodecandra subsp. trachysperma Lowell William Ahart, Lowell William Ahart 1999-1 8157 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC46204  Polygonum aviculare L. P. Janeway 1986-10-19 1940 Butte Wet area along small creek feeding Thermalito Forebay from the NE. Between bay and hwy 99 and just N of the State Park picnic grounds. 67 Comment
  CHSC9535  Polygonum aviculare M MacArthur 1968-6-17 300 Butte SW yard of Building D along So-will-lon-no Street on the Chico State College campus. 60 Comment
  CHSC101808  Polygonum aviculare subsp. depressum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC110252  Polygonum aviculare subsp. depressum L. P. Janeway 2012-10-11 11075 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC102850  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north 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. 411 Comment
  CHSC103699  Polygonum bidwelliae Lowell Ahart 2010-5-14 16667 Butte Open rocky flats, near south park fence, Disc Golf Area, about 300 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 358 Comment
  CHSC39126  Polygonum bidwelliae R. A. Schlising 1980-5-26 3603 a Butte S of the village of Cohasset. Comment
  UC178789  Polygonum bistortoides Mrs. R. M. Austin July 1896 284 Butte Colby Comment
  CHSC42123  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  CHSC44342  Polygonum californicum Lowell Ahart 1988-5-12 5996 Butte In a mined over area, open pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SEINET10479642  Polygonum davisiae Mary Susan Taylor 1978-7-18 Taylor 1705 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  CHSC26670  Polygonum douglasii subsp. spergulariiforme M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1460 Butte Scattered on e side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CAS-BOT-BC414715  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  SEINET3399374 Image available Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  CHSC113387  Polygonum parryi Lowell Ahart 2014-7-2 19550 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
  SEINET10479661  Polygonum parryi Mary Susan Taylor 1980-7-6 Taylor 3066 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10479663  Polygonum parryi Lowell Ahart 1985-6-17 Ahart 5060 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC44227  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, 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
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  CAS-BOT-BC71866  Polypodium californicum Lowell Ahart 1983-3-28 3911 Butte Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  JEPS107676  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam 304 Comment
  SEINET10530417  Polypodium glycyrrhiza Mary Susan Taylor 1981-3-24 Taylor 3433 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC233062  Polypogon interruptus A. A. Beetle 1941-6-27 1745 Butte Near Lomo, 13 miles W of Chester, near road to Chico Creek Comment
  JEPS107782  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  UCD91194  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  CAS-BOT-BC232572  Polypogon monspeliensis Lowell Ahart 1977-6-2 1524 Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE 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
  SEINET10959317  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart s.n. Butte T22N R6E sw sec. 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  CHSC24671  Polystichum californicum C. E. Stopher; K. R. Stern 1976-4-13 24 Butte 2.8 km sse of Forest Ranch. 489 Comment
  JEPS106114  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC94838  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
  CHSC39818  Polystichum munitum Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 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
  CHSC43803  Potamogeton natans Vernon Oswald 1987-7-29 3168 Butte Southwestern most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  CAS-BOT-BC453738  Potamogeton natans Lowell Ahart 1981-9-21 3198 Butte Along French Creek 1300 Comment
  UC1100069  Potamogeton nodosus Herbert L. Mason, Verne Grant 1946-8-14 13042 Butte Butte Sink Comment
  UC1099839  Potamogeton pectinatus Herbert L. Mason, Verne Grant 1946-8-14 13045 Butte Butte Sink Comment
  CHSC40329  Potentilla glandulosa Lowell Ahart 1985-5-15 4995 Butte On the sides of a stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC93978  Potentilla glandulosa subsp. ashlandica R. D. Fischer 2004-6-20 774 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. At north end of Chico Meadows, along the meadow edge. 1371 Comment
  SEINET10483125  Potentilla glandulosa subsp. nevadensis Mary Susan Taylor 1978-7-21 Taylor 1830 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC69050  Potentilla gracilis var. fastigiata Lowell Ahart 1997-8-3 7773 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
  JEPS121908  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC41286  Prunella vulgaris var. lanceolata S. C. Morey 1983-7-21 506 Butte Cherry Hill Meadow. On the n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  SFV5828  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC101815  Prunella vulgaris var. vulgaris Lowell Ahart 2009-6-12 15839 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
  CHSC26698  Prunus emarginata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1474 Butte On s side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  JEPS119633  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC88073  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC41872  Pseudognaphalium luteoalbum Lowell Ahart 1986-11-9 5455 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC90923  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD169394  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC45672  Pseudognaphalium stramineum Vernon Oswald 1988-5-2 3292 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CHSC41873  Pseudognaphalium thermale Lowell Ahart 1986-10-16 5404 Butte About 1 mile south-west of the Ponderosa Dam, about 3 miles north-west of Forbestown. 457 Comment
  CHSC116694  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2016-5-17 20838 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC60960  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1993-5-10 6933 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC361919  Psilocarphus tenellus Lowell Ahart 1989-5-23 6245 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  UCD116916  Ptelea crenulata Collector Unknown 1925-5-17 1743 Butte Marysville Buttes. Comment
  CAS-BOT-BC72553  Pteridium aquilinum Javier Penalosa 1962-6-18 2443 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC44111  Purshia tridentata L. P. Janeway; R. A. Schlising 1988-7-22 3041 Butte Saddle between Coon Hollow and Chips Cr, Slope on Chips Cr side. 1905 Comment
  JEPS119782  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18016 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC460580  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte NW of the intersection of Black Bart Road and Forbestown Road, about 1 mi. W of Robinson Mill Road 670 Comment
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  UC392203  Pyrola picta E. B. Copeland Jul 1929 Butte Jonesville 1600 Comment
  CAS-BOT-BC466306  Pyrola picta A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  SEINET10449176  Pyrola picta Mary Susan Taylor 1982-8-16 Taylor 4999 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CDA13273  Pyrola picta var. dentata G. F. Hrusa, T. D. Wilfred 1996-7-9 13121 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  UC847952  Quercus berberidifolia A. A. Heller 1916-9-8 12649 Butte e of Chico (Ten Mile House) Comment
  CAS-BOT-BC62690  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte Honey Run grade on a north slope Comment
  CAS-BOT-BC86114  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  SEINET10477877  Quercus durata Mary Susan Taylor 1979-6-12 Taylor 2301 A Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET10477880  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3476 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  CAS-BOT-BC62797  Quercus garryana John Thomas Howell 1955-6-15 30499 Butte 6 miles form Paradise on road to Pentz 426 Comment
  CAS-BOT-BC62784  Quercus garryana var. breweri Duncan Dunning 1921-8-10 37288 Butte Lassen National Forest, at Honey Run, Paradise Va road Comment
  CAS-BOT-BC61584  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 68 Comment
  CDA21949  Quercus lobata L. Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CAS-BOT-BC104488  Quercus vacciniifolia Lowell Ahart 1988-7-28 6140 Butte At the north side of the dam at Lost Creek Reservoir 1005 Comment
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CAS-BOT-BC104694  Quercus wislizeni E. B. Copeland 1899-5-28 s.n. Butte unspecified Comment
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 Comment
  UCD80705  Ranunculus aquatilis CNPS SN Foothill Team 2006-4-24 SNNR 1173 Butte CDFG, North Table Mountain Wildlife Area. 306 Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CHSC45398  Ranunculus arvensis Lowell Ahart 1977-4-28 1331 Butte In oat field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CDA3504  Ranunculus arvensis L. L. Heinrichs 1970-5-9 Butte East Biggs Road, Biggs. 0 Comment
  CHSC112901  Ranunculus bonariensis subsp. trisepalus B. Castro; Robin Carter, Sabrina Bell 2011-5-16 1881 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, just NE of Western Canal and ca 0.8 mi N of jcn of Hwy 99 and Richvale Hwy/162E. 38 Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC61608  Ranunculus canus R. M. Austin 1896-4-1 217 Butte [Label illegible] fields. Comment
  CHSC76958  Ranunculus canus Margie Collins 1894-5-1 Butte Chico. Comment
  JEPS117511  Ranunculus canus Lowell Ahart 2010-5-22 16725 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 408 Comment
  SEINET12087494  Ranunculus canus A. A. Heller, Brown, H. E. 1902-1 s.n. Butte near Nelson Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  CHSC3289  Ranunculus occidentalis M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin. building at n. end of Upper Bidwell Park. Chico. Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  UC203587  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 mi n of Oroville Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  CHSC116497  Rhamnus tomentella subsp. tomentella Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20197 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SD2128  Ribes cereum E. B. Copeland 1931-6-11 Butte Jonesville. In the open, Kirby's Meadow. 1800 Comment
  UC176366  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  SEINET10482954  Ribes roezlii Mary Susan Taylor 1981-4-16 Taylor 3544 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  SEINET10937201  Ribes roezlii Mary Susan Taylor 1976-4-4 Taylor 1054 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  JEPS119551  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC50102  Rigiopappus leptocladus Vernon Oswald 1990-4-24 4168 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, east side of Nelson Bar Rd just south of the spur road to Lime Saddle Powerhouse. 280 Comment
  CHSC51875  Robinia pseudoacacia L. P. Janeway 1987-4-20 2008 Butte North side of hwy 32 ca 9 mi NE of jct with hwy99; at Ten Mile House Trail Rd. 471 Comment
  CAS-BOT-BC74461  Rorippa curvisiliqua Lowell Ahart 1985-4-21 4878 Butte Along the sides of Wyandotte Creek south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CAS-BOT-BC74472  Rorippa curvisiliqua Clarence R. Quick 1963-7-16 63 54 d Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 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
  JEPS120612  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 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. Comment
  CHSC36686  Rorippa curvisiliqua var. orientalis R. E. Preston; L. E. Preston 1982-7-20 344 Butte Bed of stream; in meadow, ca. 1 mi s of Humbug Summit, ca. 4 1/2 miles ese of Jonesville. 1950 Comment
  CHSC42699  Rorippa curvisiliqua var. orientalis Lowell Ahart 1987-5-6 5512 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC82478  Rosa bridgesii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9742 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC94216  Rosa gymnocarpa Lowell Ahart 2006-6-24 12856 Butte 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. 1128 Comment
  CHSC60850  Rosa pisocarpa subsp. ahartii Vernon H. Oswald; Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  SD241945  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC914778  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte alongside stream Snag Lake (upper end of lake, e of Chaparral) 1524 Comment
  CHSC82377  Rosa rubiginosa Lowell Ahart 2002-6-2 9677 Butte In a meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  CHSC82410  Rosa rubiginosa Lowell Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  CAS-BOT-BC156612  Rubus bifrons Lowell Ahart 1982-9-29 3835 Butte Near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley 1100 Comment
  CAS-BOT-BC147358  Rubus pensilvanicus John Thomas Howell 1962-6-15 37451 Butte Magalia 731 Comment
  CHSC42425  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  CDA23201  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 6 .343 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC30067  Rupertia hallii R. A. Schlising 1980-7-25 3917 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC42737  Sagina apetala Lowell Ahart 1987-5-6 5515 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45580  Sagina apetala Lowell Ahart 1974-4-24 421 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  UC392230  Sagittaria cuneata E. B. Copeland 1929-7-28 Butte near Butte Creek House (Jonesville); , near Butte Creek House 533 Comment
  CHSC108820  Salix babylonica Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC103045  Salix bonplandiana Lowell Ahart 1977-4-5 913 Butte South Butte, Sutter Buttes 200 Comment
  SD933  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC108871  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southwest of the intersection of south rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  CHSC37778  Salix gooddingii M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  RSA28801  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville road 12 miles from Chico on the banks of Dry Creek. Comment
  CHSC65018  Salix jepsonii V. Oswald; L. Ahart 1988-10-6 3708 Butte Last Chance Creek where it crosses the road between Inskip and Jones Meadow. 1560 Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC125179  Salix lasiandra var. lasiandra Javier Penalosa 1962-6-18 2442 Butte Near confluence of French and Peavine Crks. 609 Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  RSA795642  Salix lasiolepis L. Ahart 2012-4-20 17887 Butte East side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 204 Comment
  CAS-BOT-BC129587  Salix lasiolepis var. lasiolepis Lowell Ahart 1982-5-8 3408 Butte Near the Forbestown Res, about 1 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 800 Comment
  CAS-BOT-BC129620  Salix lasiolepis var. lasiolepis Peter H. Raven 1953-5-9 5451 Butte 6.5 miles from Bangor on road to Oroville Comment
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  SD931  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, in meadow near the head of North Willow Creek 1550 Comment
  UC600410  Salix ligulifolia E. B. Copeland June, 1930 Butte by Butte Creek Jonesville 1500 Comment
  CHSC42434  Salix lucida subsp. lasiandra Lowell Ahart 1987-4-20 5492 Butte Along North Honcut Creek, abour 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC42542  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5684 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  CHSC59109  Salvia sonomensis L. P. Janeway; B. Castro 1992-5-3 4155 Butte Forest Ranch, 1 1/2 mi south of Platte Mtn; junction of Headwaters Road and Homeplace Loop (just off Hwy 32). 960 Comment
  RSA755771  Sambucus mexicana L. Ahart 2009-5-30 15807 Butte East side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 412 Comment
  CAS-BOT-BC238615  Sambucus nigra subsp. caerulea Lowell Ahart 1983-7-29 4254 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  RSA0036028  Sambucus nigra subsp. caerulea Lowell A. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC50544  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1990-6-20 4309 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1965 Comment
  SBBG29841  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 Butte above Jonesville 2100 Comment
  JEPS98675  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  CHSC30875  Sanicula bipinnatifida J. D. Jokerst 1979-4-2 1170 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. East edge of Mt. 396 Comment
  POM133572  Sanicula bipinnatifida A. A. Heller, H. E. Brown 1902-5-12 5539 Butte Grade between Clear Creek and Paradise. Comment
  JEPS115607  Sanicula bipinnatifida var. flava Lowell Ahart 2009-5-23 15751 Butte About 10 miles northeast of Chico, about 1/2 mile (air) southwest of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 311 Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 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
  UC1605152  Sanicula tuberosa Vernon H. Oswald and Lowell Ahart 1993-4-19 5278 Butte ENE of Magalia (Rattlesnake Creek Trail from Jordan Hill Rd to Sawmill Pk. Lookout, between the creek and the lookout) 701 Comment
  UC1605153  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte N of Oroville (S wall of Flag Canyon near top of an old track from bottom of canyon onto NW edge of North Table Mountain) 341 Comment
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CHSC109755  Saponaria officinalis Lowell Ahart 2012-10-20 18497 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC59325  Satureja douglasii L. P. Janeway; B. Castro 1992-4-17 4153 Butte About 300 ft south of Galen Road and ca 400 ft west of Bald Rock Road; ca 1 1/2 mi south of Brush Creek. 987 Comment
  UC1594731  Saxifraga bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  CDA25432  Saxifraga californica A. C. Browne 1951-3-27 Butte Richardson s Springs. 0 Comment
  JEPS87147  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  UCD49967  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte NW Foster Bx730 Princeton, 1 mi. S- 1 m; W. Butte City 4 Corners. Comment
  CHSC56804  Scirpus congdonii L. P. Janeway 1988-7-2 2947 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi south of 'town' of Brush Creek. 952 Comment
  JEPS110324  Scirpus diffusus Lowell Ahart 2006-7-25 13062 Butte In the west part of a large wet 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
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Feb 23 2009
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  SEINET11750462  Scirpus microcarpus Unknown 1985-1 5076 Butte E of dirt Rd to Forbestown Res. 2.5 mi NE of Forbestown 869 Comment
  CHSC39618  Scleranthus annuus subsp. annuus Lowell Ahart 1983-4-1 3915 Butte Found along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 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
  CAS-BOT-BC239963  Scribneria bolanderi Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC31740  Scribneria bolanderi L. Ahart 1978-4-27 1664 Butte Pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38147  Scribneria bolanderi J. D. Jokerst 1983-5-12 1758 Butte North Table Mountain. Comment
  UC1609011  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte about 1 air mi nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10836220  Scribneria bolanderi Lowell Ahart 1985-5-10 Ahart 4959 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC43848  Scutellaria californica B. Castro 1987-5-18 109 Butte Approx. 9 mi ne of Chico, ca 1/2 mi e of Hwy 32 via Altatina Dr. 426 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 Comment
  CHSC456  Sedella pumila C. Merton 1929-4-18 Butte Paradise. 365 Comment
  CHSC458  Sedella pumila P. Delaplane 1965-3-16 2 Butte E. of US 99 ca. 14 mi. N. Chico. 30 Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  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
  SEINET10530436  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2346 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET6336387  Selaginella hansenii J. T. Howell 1959-9-20 34716 Butte Feather River Highway at West Branch Bridge. Comment
  SEINET10471204  Selaginella wallacei Lawrence P. Janeway 1984-9-29 Janeway 1176 Butte Brush Creek Quad, T21N R6E NW 1/4 of sec. 35, 1850 feet. Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). "Feather Falls Scenic Area". On N-facing rock faces (granite), partially shaded, with mosses. 565 Comment
  CHSC94036  Senecio aronicoides R. D. Fischer 2005-4-30 718 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy west facing slope. 518 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  RSA0105573  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  CHSC31587  Senecio vulgaris L. Ahart 1977-9-24 1586 Butte Near the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC418  Senecio vulgaris J. Turner 1930-4-3 Butte Chico. 57 Comment
  CHSC90185  Senecio vulgaris Robert Kissane 1989-4-18 8 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CDA31826  Sesbania punicea C. Owens 2010-7-28 s.n. Butte Edge of Feather River at River Bend Park, Oroville. 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
  JEPS120725  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  CHSC66102  Setaria sphacelata Vernon H. Oswald 1996-5-23 7630 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 7.2. Sanctuary I. 33 Comment
  CAS-BOT-BC240190  Setaria viridis John Thomas Howell 1975-6-15 51062 Butte Chico 60 Comment
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  RSA715852  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  HSC43132  Sherardia arvensis Maralyn O'Meara 1974-4-20 286 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  JEPS113141  Sibara virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville 31 Comment
  CHSC13730  Sidalcea calycosa J. G. Moore 1970-5-27 153 Butte Honey Run Rd., 2 mi. w of Paradise. Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  UC108881  Sidalcea diploscypha K. Brandegee May 1883 Butte Comment
  UC1755048  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC71543  Sidalcea glaucescens Vernon H. Oswald 1998-7-26 9364 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. On the edge of the road. 1560 Comment
  CHSC101329  Sidalcea hartwegii Lowell Ahart 2009-4-22 15583 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
  CHSC11102  Sidalcea hartwegii Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75385  Sidalcea hirsuta Jennifer Slater 1997-4-27 42 Butte Edge of vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  POM61858  Sidalcea hirsuta A. A. Heller, H. E. Brown 1902-5-15 5557 Butte Near Biggs. Comment
  JEPS104599  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  CHSC39411  Sidalcea oregana subsp. spicata L. Ahart 1983-8-16 4308 Butte In small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. 487 Comment
  CHSC37440  Sidalcea robusta R. A. Schlising 1982-2-21 4225 Butte S of Paradise, near Elliot Spring House; slopes of Hamlin Canyon. 213 Comment
  CHSC50663  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CAS-BOT-BC384539  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock 944 Comment
  SEINET5337144  Silene californica R. T. Short 1959-4-11 13 Butte 15 miles east of Oroville on US 40. 549 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
  POM219117  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville; near the Summit. 2100 Comment
  CHSC217  Silene gallica P. Delaplane 1965-4-6 43 Butte Ca. 3/4 mi. above turnoff to Richardson Springs Rd. on Cohasset Rd. 243 Comment
  CHSC87537  Silene gallica R. D. Fischer 2004-4-20 131 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail, north of Disk Golf Course and prior junction of Bloody Pin Trail. 274 Comment
  CAS-BOT-BC389286  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville 1550 Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  CHSC46424  Sisyrinchium bellum Lowell Ahart 1989-5-23 6272 Butte Along Dutch Ravine, about 1/4 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SEINET12048536  Sisyrinchium bellum Unknown 1984-1 12 Butte 1.8 mi S of Concow Reservoir and .2 mi N of Deadwood Creek 457 Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 Comment
  JEPS119785  Smilax californica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18007 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SD8215  Smilax californica Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  POM109243  Smilax californica Mrs. R. M. Austin 1883-05 31 Butte Lomo. Comment
  SEINET13709621  Solanum americanum Lowell William Ahart, Lowell William Ahart 1999-1 8261 Butte 12 Mi. S of Oroville (T17N, R4E, sec 4, NW 1/4) 30 Comment
  SEINET12318607  Solanum parishii Unknown 1978-1 2 Butte West Branch Feather River 280 Comment
  SEINET10546685  Solanum parishii Mary Susan Taylor 1975-4-25 Taylor 492 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CDA6222  Solanum scabrum W. Sauer, L. Heinricks 1974-9-11 Butte Stirling City. 0 Comment
  CAS-BOT-BC157461  Solanum umbelliferum M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville 365 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  HSC93186  Soliva sessilis L. Ahart 1995-5-30 7575 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  JEPS94143  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte ca. 7 mi. (air) n. Oroville (in tracks of dirt rd. ca. 5.8 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  CAS-BOT-BC365838  Soliva sessilis Lowell Ahart 1989-5-23 6246 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  JEPS118736  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 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. Oroville 7.5' quad. Comment
  CHSC38390  Sonchus oleraceus 1983-5-1 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  CHSC37529  Sonchus tenerrimus M. S. Taylor; L. Ahart 1982-10-11 5050 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC48917  Sorbus scopulina Vernon Oswald 1985-6-3 1804 Butte At the Butte Creek Bridge on Humboldt Rd. just w of Cherry Hill. 1414 Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC102718  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC37436  Spergularia marina M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4348 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1.8 mi w of its jct with Pennington Rd at the checking station, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC390598  Spergularia rubra Lowell Ahart 1984-6-10 4707 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 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
  CHSC113505  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte Southwest part of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC44426  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock. 762 Comment
  CHSC25365  Spiranthes porrifolia Hayes; Warner 1977-8-14 39 Butte Along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  CHSC39530  Spiranthes porrifolia Lowell Ahart 1983-6-12 4045 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC42985  Stachys ajugoides var. rigida L. P. Janeway 1987-7-4 2407 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA0109093  Stachys pycnantha L. Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 760, 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
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  UC2055627  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  SEINET10537514  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1637 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC46556  Stellaria longipes var. longipes Vernon H. Oswald 1989-7-15 3858 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along a drainage on the sw corner of the meadow. 1767 Comment
  CHSC63810  Stellaria longipes var. longipes S. C. Morey 1983-8-1 665 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC102515  Stellaria media Lowell Ahart 2009-5-30 15936 Butte South of trail on the east side of Big Chico Creek, about 50 yards west of Ten mile House Road, Upper Bidwell Park, about 3/4mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  RSA754998  Stellaria media L. Ahart 2008-5-12 14752 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC70831  Stellaria pallida Vernon Oswald 1998-4-6 8899 Butte North Table Mtn. on the plateau on the south side of Beatson Hollow ca. 1.5 mi west of Cherokee Rd. 323 Comment
  CHSC50823  Stephanomeria elata Vernon Oswald 1990-7-28 4402 Butte Doe Mill Rd (Ponderosa Way), 1.5 mi (odometer) southwest of Butte Creek Bridge, ca. 2 miles (air) east-northeast of Forest Ranch. Roadside. 847 Comment
  CAS-BOT-BC375585  Stephanomeria lactucina A. A. Heller 1928-6-28 14659 Butte On the ridge south Butte Creek, Butte Meadows Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  CAS-BOT-BC87031  Streptanthus drepanoides R. E. Preston 1982-6-2 293 Butte Ca. 0.6 mile ESE of Kunkle Reservoir, on west Branch Feather River arm of Lake Oroville, ca. 4.5 mile SE of Paradise. 280 Comment
  CHSC106599  Streptanthus longisiliquus Matt Simenc; Sarah Starkey, Tim Hanson 2010-7-8 Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. 993 Comment
  CHSC94242  Streptanthus longisiliquus Lowell Ahart 2006-7-16 12958 A Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC97330  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte +- 0.8 km north of Robley Point. 938 Comment
  CAS-BOT-BC87433  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  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
  CHSC97726  Streptanthus polygaloides Lowell Ahart 2007-11-3 14552 Butte Below 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. 271 Comment
  JEPS110269  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  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
  SEINET10841529  Streptanthus tortuosus Mary Susan Taylor 1981-5-13 Taylor 3702 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  CHSC95073  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  HSC96695  Streptanthus tortuosus var. suffrutescens L. Ahart 2006-6-9 12647 Butte W side of Bardees Bar Rd., S of small stream, 0.25 mi. SW of bridge across N Fork Feather River at Bardees Bar, 2.75 mi. SW of Pulga 404 Comment
  UC725566  Streptanthus tortuosus var. suffrutescens A. A. Heller 1942-4-26 16434 Butte rocks overlooking deep gorge where road begins to descend toward Oroville (after leaving flattened summit of Table Mt.) Comment
  CHSC62538  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-10 4380 Butte Plumas National Forest, La Porte Ranger District. Southwest side of Warthan Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  UCSB57880  Suaeda calceoliformis Oswald, Vernon 1989-10-18 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC46865  Subularia aquatica var. americana Vernon Oswald 1989-8-29 3974 Butte Largest of a cluster of three snow lakes located ca. 2 mi (air) e of the peak of Snow Mtn, ca. 3 mi (air) s of Humbug Summit. 1950 Comment
  CHSC652  Swertia albicaulis var. nitida R. M. Staley 1952-7-13 Butte Butte Creek. 457 Comment
  CHSC88057  Swertia albicaulis var. nitida R. D. Fischer 2004-5-30 183 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  RSA428888  Symphoricarpos mollis H. F. Copeland 1928-8-14 97 Butte Jonesville, near Jones Creek. 1524 Comment
  CHSC20898  Symphyotrichum bracteolatum M. S. Taylor 1975-8-31 884 Butte On Ernies Island in Butte Creek, ca 50 ft S of Humboldt Rd, ca 1/2 mi E of Butte Meadows. 1341 Comment
  CHSC28624  Symphyotrichum chilense M. S. Taylor 1979-10-3 2220 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca 15 mi E of Chico. 243 Comment
  CHSC69669  Symphyotrichum chilense Vernon H. Oswald 1988-5-18 3319 Butte West edge of Kunkie Reservoir SE of Paradise. 445 Comment
  CAS-BOT-BC99038  Symphyotrichum cusickii Lowell Ahart 1987-7-3 5784 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of 271 Comment
  CHSC65886  Symphyotrichum lanceolatum var. hesperium Vernon H. Oswald 1996-4-20 7401 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacra-mento Valley. 32 Comment
  CAS-BOT-BC98058  Symphyotrichum lentum John Thomas Howell 1959-9-20 34685 Butte eastern outskirts of Oroville 60 Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  CHSC94580  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  JEPS115638  Symphyotrichum subspicatum 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
  CHSC87775  Tauschia hartwegii Paul Maslin 2004-4-22 28 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611524E 4411103N. Comment
  SEINET10471597  Taxus brevifolia Austin AUSTIN 755 Butte Mountains north of Chico, Butte County. 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
  CAS-BOT-BC77719  Thelypteris nevadensis Lowell Ahart 1981-9-15 3154 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CAS-BOT-BC88203  Thysanocarpus curvipes A. A. Heller 1915-4-20 11855 Butte Chico-Centers road 3 miles from Chico. Comment
  CHSC3245  Thysanocarpus curvipes Virginia Hagaman 1966-3-2 10 Butte 3.2 miles north of 99E on Neal Road. 243 Comment
  CHSC47389  Thysanocarpus curvipes Lowell Ahart 1975-3-23 718 Butte Along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10448591  Thysanocarpus curvipes Mary Susan Taylor 1982-5-2 Taylor 4389 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
  SEINET10448593  Thysanocarpus curvipes Mary Susan Taylor 1974-3-3 Taylor 65 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC115339  Thysanocarpus radians Lowell Ahart 2015-4-11 20028 -A Butte Normal size plants, on dry rocky thin soil, near a gold mined area . 71 Comment
  SEINET3449123  Thysanocarpus radians Unknown 2003-3-24 10023 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, on the north side of Fall River, west of the bridge across Fall River 40 Comment
  UC725627  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 mi n Oroville Comment
  HSC30340  Thysanocarpus radians Patricia Datzman 1974-4-20 24 Butte Cherokee Mtn. Rd., 2 mi. S of Cherokee Comment
  UCD128153  Torilis arvensis Joseph M. DiTomaso 1976-5-23 470 Butte Lake Oroville, peninsula at east end of lake. 274 Comment