Search Results — 2000 specimen records retrieved (1626 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  NY29501  Abies lowiana A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280.2 Comment
  RSA691017  Acacia dealbata L. Ahart 2003-4-30 10118 Butte On the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. 67 Comment
  CAS-BOT-BC330576  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling 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
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  CHSC38254  Acer macrophyllum Vernon Oswald 1983-4-1 256 Butte Upper Bidwell Park, Chico in the wooded strip s of the creek and e of the footbridge at the Golf Course. 91 Comment
  SFV16943  Acer macrophyllum J. N. Hogue 1980-9-6 83 2 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC20504  Acer saccharinum M. S. Taylor 1975-5-6 555 Butte Ca. 100 ft e of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. 60 Comment
  CHSC92647  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  CAS-BOT-BC216466  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC28476  Acmispon americanus var. americanus Robert Schlising 1979-8-17 3467 Butte Richvale vernal pools. 1/4 mi s of jct hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC886  Acmispon americanus var. americanus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  RSA0037019  Acmispon americanus var. americanus Lowell A. Ahart 2013-11-18 19282 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
  SD239731  Acmispon americanus var. americanus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley: Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi WSW (261a^z) of Honcut, 6.6 miles SE (116a^z) of Gridley (Honcut 7.5'Q) 27 Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC90517  Acmispon brachycarpus J. S. Peterich 1988-3-22 12 Butte Vic. Bear Hole in Bidwell Park ca. 2 mi. e. of golf course. 120 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC39540  Acmispon nevadensis Lowell Ahart 1983-5-28 4016 Butte Along a trail to Feather Falls, about 1/2 mile south of the falls, about 5 miles north of the town of Feather Falls. 600 Comment
  CHSC61317  Acmispon nevadensis var. nevadensis Lowell Ahart 1993-7-31 7135 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  RSA0037018  Acmispon nevadensis var. nevadensis Lowell A. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC38500  Acmispon parviflorus Vernon Oswald 1983-4-9 300 Butte Upper Bidwell Park, Chico, beside the North Rim Trail ca. 1.4 mi e of the power lines. 353 Comment
  CHSC82425  Acmispon parviflorus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS122003  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte Below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. Comment
  CHSC20402  Aconitum columbianum D. E. Brink 1974-6-14 Butte Snag Lake, ca. 175 yds downstream from the confluence of the two outfalls of the lake. Comment
  CHSC113468  Aconitum columbianum subsp. columbianum Lowell Ahart 2014-7-13 19652 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
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC39125  Aconogonon davisiae R. A. Schlising 1982-7-12 4318 Butte Near Humbug Summit in n part of county. Near Humbug Road. 2011 Comment
  SEINET10473550  Adenocaulon bicolor Mary Susan Taylor 1978-7-19 Taylor 1734 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UC1127710  Adenostoma fasciculatum H. A. Jensen 1934-10-26 391 Butte Cohasset Ridge (Keefer Ridge on map), Hd. Maple Branch Mad Creek Chico Quad., Cohasset Ridge (Keefer Ridge on map) Comment
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  CHSC78084  Aesculus californica April Glover 1997-4-4 27 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32. 390 Comment
  UCD136670  Aesculus californica L. E. Delight 1973-1-5 24 Butte ca. 160 yards east from Centennial Ave., ca. 1 mile east of intersection of Manzanita Ave. and Centennial Ave., Chico. Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC107074  Agoseris grandiflora var. leptophylla L. P. Janeway 2011-6-29 10406 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  JEPS93835  Agoseris heterophylla Lowell Ahart 1998-7-1 8024 Butte about 7 air mi n of Oroville (about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
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Jan 19 2011
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC115189  Agoseris retrorsa Lowell Ahart 2015-4-27 20090 Butte On the northside of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  SEINET10839138  Agoseris retrorsa Mary Susan Taylor 1981-4-28 Taylor 3566 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC112689  Agrimonia gryposepala Lowell Ahart 2013-7-1 18815 Butte Meadow, 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
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  CAS-BOT-BC127446  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 1066 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  CDA42905  Agrostis exarata L. Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell park, Chico. Comment
  CHSC46100  Agrostis exarata J. D. Jokerst; R. A. Schlising 1982-10-7 1656 B Butte Coon Hollow along forest service rd. 27N74, 1/2 mile west of the West Branch of the Feather River. Comment
  UCD18740  Agrostis microphylla Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 33 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  JEPS98494  Agrostis pallens Lowell Ahart 2000-6-29 8538 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS95031  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  SEINET11688338  Agrostis scabra L. Ahart, Ahart, P. 1984-1 4738 Butte ca 1.5 mi SE of Bald Mountains, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC25442  Agrostis stolonifera Hayes; Warner 1977-9-11 83 Butte Along roadside, between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  CHSC94427  Agrostis stolonifera Lowell Ahart 2006-8-15 13185 Butte Bare shallow drainage, 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
  JEPS110402  Agrostis variabilis Lowell Ahart 2006-8-15 13173 Butte North edge of a wet area west of a large open meadow with bogs, 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
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  JEPS88257  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-6-10 7764 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (along edge of slough near center of e side of Tract 5, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CAS-BOT-BC445433  Alisma triviale Lowell Ahart 1986-11-9 5449 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC112334  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC2047  Alisma triviale D. Bower 1953-7-9 Butte 3B Llano Seco. 30 Comment
  SEINET10471917  Allium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5512 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SEINET7072746  Allium amplectens A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles northeast of Oroville on Route 10 [Mountain Boulevard]. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 619496mE, 4380367mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC465437  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CAS-BOT-BC465442  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  CHSC45098  Allium cratericola R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yards W of road. 419 Comment
  SJSU7109  Allium cratericola D. J. Lane 1976-3-27 Butte North Table Mt c.1.5 mi NW of Oregon City on Oregon Gulch Rd c. 7-8 mi N of Oroville 396 Comment
  CAS-BOT-BC132072  Allium peninsulare var. peninsulare Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC84890  Allium sanbornii var. sanbornii R. D. Fischer; Jenny Marr 2003-8-3 1 Butte Sierra Nevada foothills, Big Chico Creek Ecological Reserve. On the east side flood plain of Big Chico Creek at southern end of reserve, approx. 300 ft north of Bidwell Park boundary. 243 Comment
  UC426899  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  SEINET12430634 Image available Alnus rhombifolia Kathy Corson 1969-4-6 17 Butte in Big Chico Creek just inside entrance of East 4th Street to Bidwell Park, Chico Comment
  CAS-BOT-BC138038  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC42219  Alopecurus carolinianus John E. Hunter 1986-3-30 41 Butte Ca. 1 km e of Chico, 50 m s Hwy. 32. 75 Comment
  JEPS87188  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte ca. 2 mi. w. Biggs (on s. side of Biggs Princeton Rd.) 30 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC72246  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte About 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CHSC50639  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte Along the edges of Palm Avenue, about 1 /12 mile east of Larkin Raod, about 21/2 miles north-east of East Gridley. 30 Comment
  CHSC38258  Amaranthus retroflexus Vernon Oswald 1983-6-27 769 Butte Upper Bidwell Park, Chico, at the edge of the Horse Arena. Growing in disurbed area along the edge of the parking lot. 79 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 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
  UCR219095  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2009-9-5 15572 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC84015  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET3450928  Ammannia coccinea Unknown 2003-6-23 10300 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CDA36696  Ammannia robusta L. Ahart 2003-6-19 10294 Butte Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. Comment
  JEPS34382  Amsinckia eastwoodiae Rimo Bacigalupi and L. Heckard 1963-5-14 8858 Butte Along Paradise Skyway, 0.5 mile west of junction with the Humbug Road (just SE of Chico). Comment
  CHSC31125  Amsinckia intermedia Howard Paul 1980-4-6 3 Butte Along the s rim of Butte Creek canyon, ca. 2.5 mi e of Chico, on the Skyway. 152 Comment
  CHSC34233  Amsinckia intermedia M. S. Taylor 1981-4-14 3527 Butte Nw corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  JEPS119741  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC1191045  Amsinckia intermedia Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 682 Butte near bridge on West Branch of Feather River (on Nelson Bar Road) Comment
  UC725863  Amsinckia intermedia A. A. Heller 1942-4-26 Butte Oregon City Road Comment
  SEINET10497093  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5227 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UCD119727  Amsinckia lycopsoides A. A. Heller 1914-4-21 11310 Butte Chico. Comment
  CHSC55052  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. 1066 Comment
  CAS-BOT-BC137800  Andropogon virginicus var. virginicus John Thomas Howell 1959-9-20 34669 Butte Sierra Nevada. Eastern outskirst of Oroville. Lower foothills. 60 Comment
  CHSC42569  Angelica californica Vernon Oswald 1985-6-6 1813 Butte Near Centerville Flume 0.5 mi downstream from its crossing on Humbug Rd. 341 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CAS-BOT-BC447660  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC38576  Aphyllon purpureum Vernon Oswald 1983-3-16 191 Butte Upper Bidwell Park, Chico, ca. 100 ft n of South Rim Trail and 1000 ft w of the power lines. 128 Comment
  CDA39737  Apocynum androsaemifolium Vernon H. Oswald & Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 miles west of Four Trees. Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC30935  Arbutus menziesii Herb Allan McLane 1980-4-25 14 Butte 8 ft NE of Ponderosa Way, Plumas National Forest. 426 Comment
  CHSC102006  Arceuthobium abietinum L. P. Janeway; David Toren 2009-9-15 9953 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Wildcat Creek and Bear Ranch Creek, 3.6 air km north of Road 23N31. 1419 Comment
  RSA774127  Arceuthobium abietinum L. Ahart 2010-9-21 17197 Butte On the west side of the County Road about 1/4 mile north of Jones Meadow, about 2.5 miles (air) southeast of Philbrook Reservoir. 1912 Comment
  CHSC102396  Arceuthobium occidentale Lowell Ahart 2009-8-23 16301 Butte South edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  CHSC38541  Arceuthobium occidentale Vernon Oswald 1983-6-9 664 Butte Upper Bidwell Park, Chico, near Alligator Hole. 91 Comment
  CAS-BOT-BC410081  Arceuthobium occidentale John Thomas Howell 1962-6-15 37436 Butte near Magalia 731 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632998  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27476 Butte Cohasset. 630 Comment
  UCD52097  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51105 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  CAS-BOT-BC24409  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51567 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38874  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-24 15504 Butte Site of the Ten Mile House east of Chico, on the Humboldt Road. 304 Comment
  CHSC31680  Arctostaphylos manzanita subsp. manzanita L. Ahart 1974-2-12 296 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SBBG128407  Arctostaphylos manzanita subsp. manzanita L. Ahart, J. Dittes, S. Green 2009-1-17 15468 Butte N side of Humboldt Trail, ca. 50 yards S of Guardian Rock Trail, upper Bidwell Park, ca. 300 yards W of Hwy 32 330 Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  CHSC108844  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17751 Butte On the high bank, on the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air)northeast of Chico. 335 Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CAS-BOT-BC38613  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC45572  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  POM220090  Arctostaphylos nevadensis H. F. Copeland 1928-8-29 486 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  LA42219  Arctostaphylos patula H. F. Copeland; 1932-6-29 A 7 Butte Jonesville, the Summit Comment
  UCD51943  Arctostaphylos truei John Thomas Howell 1976-4-2 51569 Butte Transition Life Zone, Paradise, Butte County. 609 Comment
  SEINET11987315  Arctostaphylos truei W. Knight, Knight, I. 1981-1 4107 Butte 1 mi N of Forest Ranch on Hwy 32 near Headwater Rd 762 Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  JEPS113134  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 46 Comment
  CHSC28477  Aristida oligantha R. A. Schlising 1979-8-18 3470 Butte Richvale vernal pools across from the Thermalito Afterbay w of Oroville; 1/4 mi s jct Hwys 162 to Oroville and 99. Comment
  RSA0118714  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km. 77 Comment
  UC145952  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico; bank of sloughs Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  UC116655  Aristolochia californica Mrs. R. M. Austin Apr 1 1896-May 1 1896 151 Butte Butte Creek Comment
  CAS-BOT-BC295867  Arnica dealbata F. N. Bassett 1923-7-23 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC113435  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  SBBG128023  Asclepias fascicularis L. Ahart 2011-8-17 17629 Butte ca. 100 yards W of the table at the old homestead and SW of Ten Mi House Rd, upper Bidwell Park, ca. 0.75 mi (air) SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 239 Comment
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  CAS-BOT-BC68883  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte 5 1/4 miles north of Feather Falls, about 1/4 mile south of the over-look to Feather Falls. 600 Comment
  JEPS110230  Aspidotis densa Lowell Ahart 2006-7-16 12965 Butte Deep road cut, west of the open mudflow area, on the south side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  SEINET10470239  Aspidotis densa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4736 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET10966246  Aspidotis densa Mary Susan Taylor 1978-7-18 Taylor 1686 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
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC105530  Aster occidentalis var. yosemitanus Lowell Ahart 2010-9-21 17227 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  RSA31862  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Treeless summit of Table Mountain, north of Oroville; 304 Comment
  CHSC25266  Asyneuma prenanthoides M. S. Taylor 1977-6-26 1370 Butte On s side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 731 Comment
  CHSC88249  Asyneuma prenanthoides Lowell Ahart 2004-7-11 11247 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS104144  Athyrium filix-femina Lowell Ahart 2003-8-26 10544 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  CHSC33569  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3728 Butte E side of 23N94, up Wildcat Creek (and nearby creeks) ca. 1 mi ne of Four Trees Rd, ca. 1 mi w of Four Trees on Oroville-Quincy Hwy. 1371 Comment
  CHSC33977  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd (next creek e of Little Ram Creek), ca. 1 mi sw of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi n of Mt House on Oroville-Quincy Hwy. 975 Comment
  JEPS94925  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  SBBG28169  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 Butte Jonesville 1600 Comment
  CHSC38411  Athysanus pusillus Vernon Oswald 1983-1-29 51 Butte Upper Bidwell Park, Chico, along the North Rim Trail at about the level of Horseshoe L. 140 Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  JEPS116043  Athysanus pusillus Lowell Ahart, John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  UCD114230  Athysanus pusillus L. Ahart 1973-3-7 159 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47126  Atriplex triangularis Vernon H. Oswald 1989-10-18 4025 Butte West Liberty Road along north boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. 19 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS102437  Azolla filiculoides Lowell Ahart 2011-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  UCSB61658  Azolla filiculoides Ahart, Lowell 1990-5-20 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
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  CHSC84645  Baccharis salicifolia Matt Quinn 2001-4-24 58 Butte Found on gravel bar along Big Chico Creek, at Day Camp beach, in Upper Bidwell Park. 94 Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  CHSC26835  Barbarea orthoceras M. S. Taylor; M. Hayes 1978-6-24 1654 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC6119  Bellis perennis A. R. Jaegel 1968-3-3 164 Butte Lawn near greenhouse at CSC Campus, Chico. Comment
  CHSC60575  Berberis aquifolium var. dictyota Vernon H. Oswald; Lowell Ahart 1993-4-19 5286 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 859 Comment
  CHSC7073  Berberis aquifolium var. dictyota R. B. Watkins 1969-3-31 12 Butte .6 mi e of Jarbo gap, 2yds. S on Forest Service Rd. #23N12. 670 Comment
  CAS-BOT-BC75547  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 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
  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
  CHSC72247  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  HSC92468  Blennosperma nanum var. nanum Jeanne McFarland, Kathy Meyer, Anne Mullenniex 1995-4-9 1 Butte N Table Mtn., S of Paradise on Cherokee Rd., at the E end of Table Mtn. proper 381 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
  RSA475190  Boisduvalia cleistogama Aaron Liston, Sara Meury 1988-5-28 743 -6 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 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
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CHSC88175  Botrychium minganense Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1554 Comment
  UC955482  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9820 Butte Jonesville, E of Stephen's Hotel 1554 Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC38046  Brassica rapa R. E. Preston 1983-1-9 376 Butte In ditch on w side of Aguas Frias Rd, 1.2 mi n of Ritchvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CHSC33943  Brickellia greenei M. S. Taylor 1981-7-10 4064 Butte N side of Hwy 70 at Pulga Bridge. Ca. 20 mi NE of Oroville. 487 Comment
  RSA768982  Briza maxima L. Ahart 2010-5-14 16636 Butte West side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 air miles northeast of Chico 376 Comment
  CAS-BOT-BC145536  Briza minor Lowell Ahart 1982-4-29 3391 Butte Sierra Nevada. A little west of the sign in station, Gray Lodge, ca. 12 miles southwest of Gridley. 36 Comment
  CAS-BOT-BC145541  Briza minor Lowell Ahart 1980-5-4 2183 Butte Thermalito. Comment
  CHSC2126  Briza minor H. Silberman 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 1/2 mi. ENE Chico. 152 Comment
  CHSC88987  Briza minor Christine Hantelman 2000-4-8 65 Butte Oroville. On side of track along south edge of Table Mountain golf course. 60 Comment
  CHSC99642  Briza minor H. Koeth; H. Jansen 2007-4-25 Butte Hwy 32 (Roadside), West from Bidwell Park. UTM 10 608429E 4402420N. 342 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  SEINET10863379  Brodiaea A. Arthur Heller 1941-5-9 Heller 16105 Butte Roadside banks along the Clark Road to Paradise, below the Clear Creek school house. Comment
  CAS-BOT-BC482215  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  UC768718  Brodiaea coronaria subsp. coronaria R. F. Hoover 1936-5-20 1154 Butte 10 mi sw Oroville Comment
  CHSC84255  Brodiaea elegans subsp. elegans Lowell Ahart 2003-5-26 10215 Butte On dredge tailings, on the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS7735  Brodiaea elegans subsp. elegans W. L. Jepson 1934-5-4 16620 Butte 2 1/2 mi ne Cana Comment
  CAS-BOT-BC482198  Brodiaea elegans subsp. elegans John Thomas Howell 1967-6-22 42626 Butte Magalia, Sierra Nevada 701 Comment
  SBBG45026  Brodiaea minor L. Constance 1941-5-28 2825 Butte foothills 3 mi SW of Paradise 304 Comment
  SEINET3884982  Brodiaea multiflora Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -4 Butte Magalia, near skyline road to Paradise.; 0 168 Comment
  CHSC116566  Brodiaea nana B. Castro; Robin Carter 2016-4-14 2128 Butte Sacramento Valley. Ca 1.9 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.2 mi SSW of the Oriville Airport, off N edge of SE portion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC71462  Brodiaea sierrae Lowell Ahart 1998-7-19 8045 Butte Along Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  UCD78203  Brodiaea sierrae Robert E. Preston 2004-6-19 2260 Butte 1 mi NNE of Magalia, 250 ft S of Jordan Hill Rd where it crosses North Fork of the West Branch of the Feather River 486 Comment
  CHSC40289  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  CHSC38797  Bromus diandrus Vernon Oswald 1983-2-23 101 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 0.2 mi w of the power lines. 97 Comment
  RSA0112571  Bromus laevipes Lawrence P. Janeway, Emily M. Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 Comment
  SEINET10835094  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC41139  Bromus madritensis subsp. rubens R. L. Ondricek-Fallscheer 1982-3-22 130 Butte Along Hwy 149, ca. 1 mi. e of jct. of Hwy 99 and Hwy 149; ca. 11 mi. se of Chico (Hwy 32). 60 Comment
  CHSC42845  Bromus madritensis subsp. rubens Lowell Ahart 1987-5-6 5553 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS110320  Bromus orcuttianus Lowell Ahart 2006-7-25 13054 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-BC161962  Bromus rubens John Thomas Howell; Gordon H. True 1967-6-11 42561 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  CAS-BOT-BC161612  Bromus sterilis Lowell Ahart 1977-6-16 1474 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  CDA13897  Bromus sterilis G. F. Hrusa, T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC107590  Bulbostylis capillaris Lowell Ahart 2011-7-9 17572 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  JEPS117410  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC77983  Callitriche trochlearis Lowell Ahart 2000-5-10 8335 Butte On the bottom of a small moist (seepy) swale, about 100 yards south of a deep wash, 100 feet east of a dirt road, Peter Ahart ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC42752  Calocedrus decurrens Lowell Ahart 1987-8-8 5854 Butte Near North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SEINET10531065  Calocedrus decurrens Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5168 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  SEINET10531070  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  HSC38016  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2476 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC487511  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  CAS-BOT-BC487514  Calochortus albus A. A. Heller; H. E. Brown 1902-5-7 5484 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC36540  Calochortus leichtlinii L. Ahart 1982-6-4 3551 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  SEINET10469592  Calochortus leichtlinii Mary Susan Taylor 1980-8-2 Taylor 3208 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  RSA113891  Calochortus luteus E. K. Balls, Lee W. Lenz 1955-5-13 20482 Butte 3.2 miles north of Oroville on road to Magalia and Paradise 122 Comment
  CAS-BOT-BC492562  Calochortus minimus C. C. (Mrs.) Bruce 1897-6-1 s.n. Butte Dye place Comment
  CHSC82634  Calochortus monophyllus Tara Morgan 2002-4-23 35 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail. On the side of the trail. 414 Comment
  RSA481906  Calochortus monophyllus Aaron Liston 1988-3-15 697 -1 Butte East of Cohasset, Ponderosa Way, T24N, R2E 500 Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  SEINET8715964 Image available Calochortus nudus Unknown 1946-1 2939 Butte Along Butte Creek, just below Jonesville. Comment
  SEINET5162627  Calochortus tolmiei Unknown 1995-6-16 04 Butte outside Paradise, CA. on road to Stirling City Comment
  POM169461  Calochortus tolmiei E. B. Copeland 1903-4-10 3023 Butte Chico Comment
  JEPS95625  Calycadenia fremontii Lowell Ahart 1994-10-8 7551 Butte 1 mi e of Chico Bidwell Park; Chico, North Rim Trail 152 Comment
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CHSC288  Calycadenia oppositifolia M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC84731  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7856 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  CHSC86592  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-7-11 7897 Butte Northern High Sierra Nevada. Above northeast edge of North Fork Feather River arm of Lake Oroville, 1200 m north of mouth of French Creek. 305 Comment
  POM284479  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UC894256  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte 10 mi e of, Oroville; Sierra foothills Comment
  UC1119109  Calycadenia spicata F. W. Embree 1934-4-24 44 Butte 4 1/2 mi n and 1 1/2 mi e of Biggs; Marysville 38 Comment
  CHSC43200  Calycadenia truncata Robert Banchero 1981-6-29 548 Butte Ca 2.2 air mi W of Pulga. Comment
  UC1953738  Calycadenia truncata 1984-6-19 2028 Butte 6.6 mi NE of Chico on Hwy 32 (from Hwy 99 jct), very near milepost 17.00 (?=RLC 2268) 397 Comment
  CHSC93868  Calycanthus occidentalis Lowell Ahart 2006-6-9 12662 Butte On the west side of Bardees Bar Road, at 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
  UCD68064  Calycanthus occidentalis Paul Quiggle 1976-5-24 9 Butte Lassen National Forest, approximately 35 miles East of Chico, California, on the East bank of Deer Creek. Plant found in mid-day sunlight. Comment
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  OBI5732  Calyptridium monospermum H. F. Copeland 1928-8-20 1016 Butte Jonesville 1524 Comment
  CHSC91261  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC34978  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-5 3138 Butte 9.9 mi NE of Chico along Hwy 32. 512 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
  CAS-BOT-BC496961  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CAS-BOT-BC496964  Camassia leichtlinii subsp. suksdorfii A. A. Heller 1915-6-11 11959 Butte Butte Meadows in Sierra Nevada, in the yellow pine belt 1219 Comment
  UC145404  Camelina microcarpa Guill Bros. 1902-1-1 Butte Chico Comment
  CHSC27224  Camellia japonica P. Moyer 1971-2-1 71 Butte CSUC Campus. Within stand of camellias, n bank Chico Ck., n of Cafe Annex bridge. 60 Comment
  SEINET10462920  Campanula prenanthoides Edwin B. Copel 1930-8-4 Copeland 482 Butte JONESVILLE, SOIL EXPOSED BY SLIDE, IN SHADE 1500 Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10463084  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte ON RD FROM PRATTVILLE TO CHICO NEAR CHICO Comment
  CHSC103660  Capsella bursa-pastoris Lowell Ahart 2010-2-13 16567 Butte Corral west of metal barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC490  Capsella bursa-pastoris P. Delaplane 1965-3-20 38 Butte At base of steps of 1069 East Ave., Chico. 30 Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC50317  Cardamine breweri var. breweri Vernon Oswald; Lowell Ahart 1990-5-29 4263 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  UC1609151  Cardamine californica Vernon H. Oswald and Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmille Peak (Lookout ene of Magalia); Lookout, ene of Magalia 701 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  SBBG128032  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte parking area, Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville 33 Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CHSC27943  Cardamine pachystigma var. dissectifolia M. S. Taylor 1979-3-20 1946 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC113283  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  UC8055  Carex W. H. Brewer 1470 Butte near Chico Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 Butte North edge of a wet area west of a large open 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
  RSA769592  Carex angustata L. Ahart 2010-9-28 17261 Butte West edge of 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SD473  Carex aurea E. B. Copeland 1930-6-23 Butte Jonesville; in wet meadows. 1500 Comment
  CHSC44933  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC52252  Carex bolanderi L. P. Janeway 1989-5-11 3233 Butte Along Bardee's Bar Road (Pulga Road) 3.2 mi N of Big Bend Road; in canyon of North Fork Feather River. 518 Comment
  UC1609336  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek); Bolt Creek 1325 Comment
  CAS-BOT-BC19604  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge. Along Concow Road 2.0 miles north of Rag Dump. 1295 Comment
  SEINET4289467 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CHSC101124  Carex densa Lowell Ahart 2009-5-23 15730 Butte On the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS109982  Carex disperma Dean W. Taylor 2006-8-1 s. n. Butte 200 ft E of Keyser Creek 1554 Comment
  SEINET8027623 Image available Carex echinata L. Janeway, Gog, L 2008-1 3196 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi W of Cherry Creek Campground. Comment
  CHSC52859  Carex echinata subsp. echinata L. P. Janeway 1987-6-13 2213 Butte Meadow just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC47062  Carex feta L. P. Janeway 1989-5-17 3246 Butte High in cyn of S Fk Feather River; along edge of road to Forbestown Diversion Dam 1.4 mi E of Forbestown Rd. 853 Comment
  CAS-BOT-BC20000  Carex feta L. P. Janeway 1987-5-20 2077 Butte Along Hwy 70 2.1 miles NE of Pulga bridge, near Heinz Creek. 457 Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  CHSC106516  Carex fracta Peter F. Zika 2009-8-18 24616 Butte Cascade Range Highlands (CaRH). 2 air km S of Humboldt Summit, above Humboldt Road. 1900 Comment
  CHSC113415  Carex fracta Lowell Ahart 2014-7-16 19678 Butte Northeast of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC86549  Carex fracta L. P. Janeway; John Hunt 2003-7-1 7864 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  SEINET7485219 Image available Carex fracta Peter F. Zika 2009-1 24616 Butte above Humboldt Road, c. 1 air km S of Humboldt Summit 1900 Comment
  CHSC110987  Carex gracilior Lowell Ahart 2012-5-17 18085 Butte On both sides of the horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 73 Comment
  SEINET8990670 Image available Carex gracilior Unknown 2009-1 15911 Butte 60 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. Comment
  CHSC43919  Carex heteroneura var. heteroneura L. P. Janeway 1986-9-1 1836 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  RSA0116106  Carex hirtissima Lowell A. Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET7561559 Image available Carex hirtissima Lowell Ahart 1985-6-30 5078 Butte Near road to Forbestown Res. East of the dirt road to the Forbestown Res, about 2 1/2 miles north-east of Forbestown. 869 Comment
  SEINET4286139 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 C Butte Just east of Philbrook Resevoir. Comment
  CHSC94426  Carex integra Lowell Ahart 2006-8-15 13175 Butte North edge of a wet area west of a large open 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
  CHSC113953  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway,about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2-1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC42690  Carex laeviculmis L. P. Janeway 1987-6-27 2342 Butte Along Little Kimshew Cr 0.7 mi north of the Concow Rd. 1508 Comment
  CHSC44931  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte Road gutter, north of a small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  SEINET12649529 Image available Carex leavenworthii Lowell Ahart 2012-1 18190 Butte 62 Comment
  CAS-BOT-BC32200  Carex multicaulis Lowell Ahart 1982-6-4 3537 Butte Ca 8 mi E of Feather Falls, 1.5 mi E of Camp 18. 1000 Comment
  CHSC36893  Carex multicaulis L. Ahart 1982-6-4 3537 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  SEINET3904180  Carex multicaulis L. W. Swift 1934-5-8 106 Butte Plumas National Forest, south of. Challenge, CA.; 0 914 Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  CHSC52256  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2496 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. 1661 Comment
  CHSC52261  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1854 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CHSC52263  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1853 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CHSC89037  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8245 Butte High Cascade Range. At Cold Springs; north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  UC1108039  Carex nervina H. F. Copeland 1932-8-22 Butte Butte Creek Crest Butte Creek Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  UC1609337  Carex nudata Lowell Ahart 1993-4-8 6932 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage Comment
  CHSC44949  Carex simulata L. P. Janeway 1987-6-19 2250 Butte Mdw on Pinkard Cr, between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  SEINET3138432  Carex subfusca R. Tallent 1987-8-17 952 Butte Lassen National Forest; along Jones Creek, NE of Jonesville. 1720 Comment
  SEINET10946213  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, ca. 14 mi N of Lake Madrone, ca 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC112101  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. 61 Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  JEPS88574  Carex vulpinoidea Vernon H. Oswald and Lowell Ahart 1996-6-10 7754 Butte US Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (canal at ne corner of Tract 7.2, Sanctuary I); Sacramento National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC838  Cassia covesii 1932-6-26 Butte Comment
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Apr 2 2012
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC50060  Castilleja affinis Lowell Ahart 1990-3-28 6430 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CAS-BOT-BC249116  Castilleja affinis Lowell Ahart 1990-3-28 6430 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 39 Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  CHSC40878  Castilleja applegatei subsp. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC44356  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  JEPS3294  Castilleja applegatei subsp. pinetorum L. Heckard and J. R. Sweeney 1953-4-27 345 a Butte 23 mi ne Oroville (Feather River canyon highway) 548 Comment
  JEPS46014  Castilleja applegatei subsp. pinetorum L. R. Heckard 1956-8-6 822 Butte just e Butte Meadows (along the road to Jonesville) 1371 Comment
  CAS-BOT-BC255462  Castilleja applegatei var. pinetorum Peter H. Raven 1954-4-17 6619 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC27850  Castilleja attenuata Ethel Pearson 1978-4-18 11 Butte Ca. 12 mi n of Chico on State Hwy. 99 at Broyles Rd. 67 Comment
  JEPS124208  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CHSC43555  Castilleja campestris subsp. campestris Lowell Ahart 1979-5-20 1885 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  CHSC24845  Castilleja exserta T. L. Reynolds 1976-4-25 67 Butte Ca. 20 yds ne of Manzanita Ave and ca. 200 yds se of Chico Creek, .3 mi se of Hooker Oak. 59 Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  LA209237  Castilleja miniata E. B. Copeland; 1929-7-25 Butte Jonesville 1500.0 Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CAS-BOT-BC195579  Catapodium rigidum Lowell Ahart 1982-5-3 3406 Butte Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut 50 Comment
  CAS-BOT-BC48817  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  SEINET13945813 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  SBBG121216  Ceanothus diversifolius L. Ahart 2007-7-10 14283 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca 17 mi NE of Oroville 1032 Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  UC1070772  Ceanothus integerrimus P. L. Johannsen 1936-7-30 975 Butte 3 mi wsw Chaparral; Paynes Creek quad. 1371 Comment
  CAS-BOT-BC50712  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC51729  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte Near Stirling 1074 Comment
  CHSC31410  Ceanothus lemmonii Leslie Steidl 1980-4-10 14 Butte Ca. 17 mi ne of Oroville, ca. 2 yd e of Lumpkin Rd and 10 yd n of Mc Cabe Creek. SW1/4 of NE1/4 of NE1/4 of SE1/4. 390 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  RSA769802  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15425 Butte Southeast side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC100871  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek 455 m west of Day Camp. 91 Comment
  JEPS118609  Celtis sinensis L. P. Janeway, B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. Richardson Springs 7.5' quad. Comment
  SEINET10473682  Centaurea cyanus Mary Susan Taylor Taylor 828 Butte Weedy or cultivated plants of Chico. 61 Comment
  UC1609220 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  CHSC69446  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS115270  Centaurea solstitialis Lowell Ahart 2009-5-30 15953 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
  CHSC108326  Centaurea stoebe subsp. micranthos Lowell Ahart 2011-8-19 17638 Butte On east side of the forest road, about 1/2 mile northwest of the bridge across the South Fork of the Feather River, about 7 miles (air) east-northeast of Feather Falls. 1243 Comment
  JEPS107528  Centaurium muehlenbergii Lowell Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA39704  Centaurium venustum L. Ahart 1998-7-1 8021 Butte Northwest of the lone oak tree, about 1/8 mile northwest of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC22563  Centromadia fitchii Robert A. Schlising 1973-10-14 3118 Butte Bidwell Park, Chico, ca 0.25 mi NE of jct Upper Park Road and Manzanita Avenue. Comment
  UC171477  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte e of Chico (hills near Big Chico creek) Comment
  CHSC25317  Centromadia pungens M. Hayes; Warner, Schlising 1977-8-23 51 Butte Drainage of Butte Creek where this intersects Highway 162. Near Butte-Glenn county line. 55 Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC113243  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 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
  CHSC115479  Cerastium glomeratum L. P. Janeway; Emily Meigs Doe 2015-4-22 11667 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CHSC21067  Ceratophyllum demersum M. S. Taylor 1975-10-4 960 Butte In Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC115429  Cercis occidentalis Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  UC204721  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte e Chico; Canyon of Big Chico Creek 68 Comment
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Feb 17 2016
  SEINET11892046  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Reservoir, about 2 mi S of Paradise 488 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
  CHSC42430  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  JEPS115356  Chamaesyce maculata Lowell Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  CHSC23659  Cheilanthes gracillima M. S. Taylor 1976-4-24 1069 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
  UC474227  Cheilanthes gracillima H. F. Copeland 1920-5-22 Butte Jonesville Comment
  SEINET10529913  Cheilanthes gracillima Mary Susan Taylor 1981-3-24 Taylor 3438 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
  CHSC39501  Cheilanthes intertexta Lowell Ahart 1983-5-28 4042 Butte About 1/4 mile south of the over-lood to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  UC1563283  Chenopodium album Lowell Ahart 1990-9-30 6609 Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC51256  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 a Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile northeast of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC100478  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  SEINET10449193  Chimaphila menziesii Mary Susan Taylor 1977-8-17 Taylor 1482 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CDA13278  Chimaphila umbellata G. F. Hrusa, T. D. Wilfred 1996-7-9 13126 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  SBBG16796  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville 1550 Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  CHSC87541  Chlorogalum angustifolium R. D. Fischer; Jenny Marr 2004-4-27 137 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at north end of Disk Golf Course, near the top of the north-connecting trail going down toward Guardian Trail. Scattered throughout Disk Golf Course. 381 Comment
  JEPS55718  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 822 Butte on Pentz Road ca 1/4 mi w Pentz Comment
  CHSC84240  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the north slope of Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 296 Comment
  CHSC29834  Chorizanthe polygonoides var. polygonoides M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2756 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  CAS-BOT-BC247538  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  CHSC29004  Cicendia quadrangularis M. S. Taylor 1980-4-4 2456 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC35077  Cicendia quadrangularis R. A. Schlising 1980-3-24 3527 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CDA32011  Cichorium intybus L. 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. Comment
  CHSC39301  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, California. Found growing on dry red rocky soil along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville, California. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC55308  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte Along Haphazard Creek, about 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Brush Creek. 1219 Comment
  CHSC47051  Circaea alpina subsp. pacifica R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4650 Butte NE part of county on Snow Mountain ridge. At roadside. 1950 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC71307  Clarkia gracilis subsp. albicaulis Vernon Oswald 1998-6-24 9238 Butte Hwy 32 at Crown Pt. Rd between Chico and Forest Ranch. 573 Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC1105  Clarkia mildrediae subsp. mildrediae R. Carter 1964-6-15 124 Butte Feather River Canyon along S side Hwy. 40 on W side of tunnel, Arch Rock. 609 Comment
  UC1606714  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-7 4834 Butte along Highway 70 1.3 mi ne of Jarbo Gap (North Fork Feather River canyon); , Highway 70 655 Comment
  CAS-BOT-BC163639  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CAS-BOT-BC172381  Clarkia purpurea subsp. viminea Lowell Ahart 1984-5-28 4650 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC1113  Clarkia rhomboidea M. Roberson 1956-6-4 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC2512  Clarkia rhomboidea W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. 396 Comment
  CHSC88090  Clarkia rhomboidea R. D. Fischer 2004-4-17 175 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on cut bank. 365 Comment
  SEINET770612 Image available Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. Comment
  SEINET4988485  Claytonia palustris Unknown 1959-7-4 490 Butte Jonesville, 0.4 km E of Jonesville Hotel Comment
  CHSC31194  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-4-1 2418 Butte In deep shade in moss over rocks, along s side of Butte Creek, ca. 1/4 mi downstream (w) of Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC31195  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, in very wet shady areas under tress, in moss over rocks by the creek, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi ne of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC42409  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-12 5644 Butte South of Lumpkin ridge road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA715846  Claytonia perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC439753  Claytonia perfoliata Lowell Ahart 1981-4-9 2756 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC440031  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1980-5-17 2276 Butte 1/2 mile south-east of Hurleton. 600 Comment
  CAS-BOT-BC443702  Claytonia rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC45389  Claytonia rubra subsp. rubra Vernon Oswald 1984-5-9 1177 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Loma). 1158 Comment
  CAS-BOT-BC91346  Clematis lasiantha Lowell Ahart 1974-8-9 s.n. Butte East of Marble Creek. 914 Comment
  UC426947  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville 1650 Comment
  CHSC11083  Collinsia sparsiflora var. collina Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  CHSC40882  Collinsia tinctoria Lowell Ahart 1985-5-15 4977 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC60614  Collinsia tinctoria L. P. Janeway 1992-6-13 4233 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. Ca 200 ft east of Dark Canyon Road. 464 Comment
  CHSC79826  Collinsia tinctoria G. F. Hrusa; T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest. At E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. [Lat./Long. on label is '39 45 N; 121 17 W']. 1100 Comment
  UC392187  Collomia grandiflora E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  POM278760  Collomia grandiflora Lyman Benson 3959 Butte First Summit, Oroville-Quincey. 1207 Comment
  UCD118124  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC50414  Collomia linearis Vernon Oswald 1990-6-26 4319 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the upper north bank of the creek just upstream from Humbug Rd. 1761 Comment
  CHSC41369  Collomia tinctoria R. A. Schlising; Sandra Morey 1982-8-31 4381 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10454740  Conium maculatum Mary Susan Taylor 1982-4-28 Taylor 4357 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
  CHSC5936  Convolvulus arvensis M. MacArthur 1968-6-17 192 Butte Chico State College campus. SE side PSA bld., near wall. 60 Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
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Jun 19 2009
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  RSA4169  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  CHSC66075  Cornus glabrata Vernon H. Oswald 1996-5-22 7627 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing in the edge of a slough at the SE corner of the Riparian Sanctuary. 28 Comment
  JEPS115604  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west 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
  CHSC52016  Cornus nuttallii Steven Triano 1988-4-17 58 Butte Ca 50 ft e of Hwy. 32 and 6.54 mi n of Forest Ranch. 984 Comment
  CDA34627  Cotoneaster lacteus L. Ahart 2009-5-3 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  JEPS115695  Cotoneaster pannosus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC1586403  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam. 213 Comment
  CHSC50643  Cotula australis Lowell Ahart 1990-5-28 6498 Butte Along the edges of Palm Avenue, near the old bridge, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  POM30560  Cotula coronopifolia C. C. Bruce 1897-05 128 Butte [Unspecified] Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  JEPS118636  Crataegus monogyna L. P. Janeway 2011-6-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. Comment
  CHSC44510  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  UCD130979  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte west side of Ponderosa Way (Rim Rd.) under PGE lines, 1.1 miles north of its junction with Hwy 70 at Jarbo Gap. Comment
  SD122578  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte edge of dirt road, ar fork of Feather Falls and Lumpkin Ridge Rd., 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown 500 Comment
  CHSC41984  Crypsis schoenoides Lowell Ahart 1986-11-14 5481 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, about 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC41985  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 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
  CHSC69734  Crypsis schoenoides Lowell Ahart 1997-10-24 7940 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
  CHSC83050  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA492371  Crypsis schoenoides P. Reisentz 1979-5-13 s.n. Butte 4 miles east on Cherokee Rd. from Hwy. 70 Comment
  CHSC33409  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-28 3933 Butte E. of Jonesville, on road towards Scotts John Creek. 1828 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  UC857133  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC46752  Cryptantha flaccida Lowell Ahart 1980-5-12 2245 Butte On dredger piles along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC29286  Cryptantha intermedia R. A. Schlising 1980-5-4 3579 Butte Along Lunt Road, 1/4 mi n of jct with Hwy 70, north of Hwy 70 crossing Lake Oroville. Comment
  CHSC40753  Cryptantha intermedia Lowell Ahart 1985-5-31 5030 Butte About 5 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Boat Launch Aream about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  UC600567  Cryptogramma acrostichoides H. F. Copeland 1932-7-24 Butte Jonesville, Butte Creek drainage Jonesville 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
  UC1134222  Cupressus macnabiana H. A. Jensen 1933-12-15 369 Butte 1 mi sw Brownsville; Smartsville Quadrangle Comment
  SEINET5716135 Image available Cupressus macnabiana Lowell Ahart 1985-1 5094 Butte About 2.5 miles NE of Forbestown.; Forbestown 869 Comment
  CHSC26665  Cuscuta californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1457 Butte E side of Old Humboldt Rd., ca. 4.5 mi ne of Butte Meadows turnoff from Hwy. 32. 1326 Comment
  JEPS110256  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  JEPS120643  Cuscuta campestris Lowell Ahart 2013-11-13 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, along the sides of Sucker Creek, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  HSC66334  Cuscuta indecora M. S. Taylor 1980-6-7 2791 Butte SW corner of Hwy. 162 and Aquas Frias (Goodspeed-Watt Rd. on some maps), 15 mi. S of Chico 46 Comment
  CHSC28484  Cycloloma atriplicifolium R. Schlising 1979-10-13 3497 Butte Along Sacramento River w of Chico. Just n of Chico Landing Site in Bidwlel River State Park. Comment
  RSA774126  Cymopterus terebinthinus var. californicus L. Ahart 2010-9-21 17233 Butte On both sides of the County Road, between Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows Comment
  CHSC34174  Cyperus bipartitus L. Ahart 1981-9-15 3169 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  UC980096  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC39666  Cyperus eragrostis Lowell Ahart 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC4368  Cyperus eragrostis M. Hillier 1966-5-29 Butte In dry creek bed along Manzanita Ave. Chico. Comment
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  POM219532  Cyperus esculentus H. F. Copeland 1923-8-13 550 Butte Nelson. Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  SEINET13711402  Cyperus flavescens Lowell William Ahart, Lowell William Ahart 1999-1 8143 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  SEINET7582011 Image available Cyperus flavicomus Lowell Ahart 1984-9-24 4810 Butte Middle Honcut Road, west of Honcut, along the edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West 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
  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
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC68402  Cyperus niger L. P. Janeway 1988-6-25 2852 Butte Slope between creek and Hwy 191 (Clark Road) 3.0 mi north of Durham-Pentz Road. 176 Comment
  CAS-BOT-BC113840  Cyperus niger var. capitatus A. A. Heller 1914-7-20 11581 Butte Hills 8 mi N of Oroville Comment
  CHSC68406  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the City of Chico; on the CSU, Chico Campus. At edge of lawn at northeast corner of Plumas Hall. 59 Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC28615  Cyperus strigosus M. S. Taylor 1979-10-3 2222 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from Helltown bridge over Butte Creek, ca. 15 mi e of Chico. 243 Comment
  CHSC68407  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1861 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC71404  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET199879  Cyperus strigosus Herbert L. Mason, Verne Grant 1946-9-27 13140 Butte 3 miles W of Biggs. Comment
  CAS-BOT-BC114205  Cyperus strigosus Lowell Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  SEINET10470085  Cypripedium fasciculatum Mary Susan Taylor 1981-5-29 Taylor 3817 Butte T23N R7E nw/nw sec 29, Bucks Lake quad. Along Buckhorn Creek on S side, about midslope, ca. 200 ft W of 23N18.5, ca. 1 mi SW of Grizzly Mt, ca. 13 air mi NE of Pulga. Dense, shaded, moist Yellow Pine Forest; 5200 ft. 1585 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
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 0.5 mi w of Orovill-Quincy Hwy. 1371 Comment
  UCD136363  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek. 1550 Comment
  UCD137972  Damasonium californicum L. Ahart 1974-5-12 451 Butte along Central House Road, near Honcut. 30 Comment
  CHSC43128  Danthonia californica var. americana Robert Banchero 1981-7-19 610 Butte Ca 0.6 mi e of Balt Mt look-out tower, on Keyser Creek. 1682 Comment
  CHSC59044  Danthonia californica var. americana Lowell Ahart 1992-7-21 6801 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS95166  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
  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
  CHSC39662  Danthonia unispicata Lowell Ahart 1983-6-21 4093 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC6660  Danthonia unispicata Marilyn Lee 1968-4-19 115 Butte West side of Cherokee Road, 2 miles south of Cherokee and 100 yards south-east of graveyard. Table Mt. Comment
  CHSC110036  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. 79 Comment
  CHSC4517  Darmera peltata C. Glascock 1965-5-11 380 Butte 14.15 mi. nw of Russell Dr. in south Paradise and ca. 100 yds upstream from the upper end of De Sabla reservoir on stream bank at w roadside on Stirling City Hwy. Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  SEINET10483090  Darmera peltata Mary Susan Taylor 1980-3-19 Taylor 2387 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  JEPS120582  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC38722  Datura wrightii Vernon Oswald 1983-10-8 1054 Butte Upper Bidwell Park, Chico, on the south edge of the parking lot at Five Mile Recreation Area. 85 Comment
  CHSC38733  Daucus pusillus Vernon Oswald 1983-5-7 446 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC8574  Delphinium hansenii Isabel McCracken 1938-5-21 s.n. Butte Marysville Buttes, east side Comment
  CHSC78159  Delphinium hansenii subsp. hansenii Lowell Ahart 2000-5-31 8431 Butte Near the north shore line of Lake Oroville, about 50 yards east of the boat launch ramp, southeast of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CHSC51109  Delphinium nudicaule Ginger S. Gough 1989-4-8 18 Butte Ca. 9 m ese of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CAS-BOT-BC8069  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  POM99888  Delphinium nuttallianum C. C. Bruce 1897-03 1916 Butte Butte Creek. Comment
  CHSC31340  Delphinium patens subsp. patens Herb Allan McLane 1980-4-23 6 Butte 1.2 mi sw of Ponderosa Dam, se of trail, Plumas National Forest. 426 Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  POM99307  Delphinium variegatum C. C. Bruce 1897-03 1918 Butte [No location data on label] Comment
  RSA400056  Delphinium variegatum M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  CAS-BOT-BC16981  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-13 5520 Butte Near Clear Creek Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC90074  Delphinium variegatum subsp. variegatum M. A. Carlson 1991-4-12 19 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  CAS-BOT-BC82871  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CHSC116972  Dendromecon rigida Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70 572 Comment
  CHSC45024  Dendromecon rigida J. Marr 1988-3-18 8 Butte On n side of Concow Rd, 4 mi. from Hwy 70, 18 mi n of Oroville. 365 Comment
  HSC38033  Dendromecon rigida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2484 Butte Just E of Magalia Comment
  SFV1356  Dendromecon rigida B. Fuller 1961-4-28 s. n. Butte Sierra Nevada Paradise. Stearns and Harrison Roads. 535 Comment
  UCD61116  Deschampsia cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 miles SSE of Butte Meadow. 1493 Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC589923  Deschampsia cespitosa subsp. cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 mi. s.-s.e. Butte Meadows; Paynes Creek Quad. 1493 Comment
  UC791015  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at rd. forking to Chico Creek Lomo Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 Comment
  CHSC59045  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC86952  Dianthus armeria subsp. armeria L. P. Janeway; B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  RSA21538  Dicentra formosa subsp. formosa Carl B. Wolf 1937-5-17 8724 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, W side of Big Butte Creek 732 Comment
  CHSC45019  Dichelostemma capitatum subsp. capitatum Keith T. Pomeroy 1988-3-16 1 Butte 19 km nne of Chico, 2 km n of Centerville and 1.1 km e of Butte Creek. 360 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
  SD6360  Dichelostemma capitatum subsp. capitatum Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  CHSC22949  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC23469  Dichelostemma multiflorum J. R. Lee 1974-4-22 3 Butte 25 yds n of Skyway and 6 mi e of Chico city limits. 152 Comment
  CHSC33141  Dichelostemma multiflorum J. D. Jokerst 1981-5-14 1315 Butte Top of North Table Mountain at it's W edge, ca. 1/3 mi N of Cherokee Rd. 365 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  SEINET10839403  Dichelostemma multiflorum Lowell Ahart 1985-6-17 Ahart 5057 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CAS-BOT-BC502515  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CAS-BOT-BC502519  Dichelostemma volubile Margaret J. Williams; Wayne Roderick 1984-5-25 84- 21 -2 Butte 3.3 miles from Paradise on Honey Run Road. 167 Comment
  SEINET10496684  Dichondra donelliana Mary Susan Taylor 1980-5-24 Taylor 2739 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC87543  Diospyros kaki R. D. Fischer 2004-4-11 125 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, shading picnic table, at the junction of 10 Mile House Road and Annie Bidwell Trail. 256 Comment
  SEINET8205896  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte plentiful near Cohasset; in open places in the chaparrel, which here is mainly Quercus Oerstediana; near upepr limt of digger pine in the Sierra foothills. Comment
  CHSC87411  Diplacus douglasii R. D. Fischer 2004-2-28 118 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). South trail leading into canyon. 548 Comment
  CAS-BOT-BC150505  Diplacus grandiflorus A. A. Heller 1914-5-18 11407 Butte Between Chico and Forest Ranch, 14 miles from Chico; West slope of the Sierra near Forest Ranch 609 Comment
  CAS-BOT-BC150509  Diplacus grandiflorus F. W. Pennell; A. A. Heller 1940-6-5 25677 Butte Route 24, along Feather River, above Oroville 243 Comment
  CHSC44357  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte On a very deep road cut along Poe Power House Road, about 1/2 miles north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC46409  Diplacus layneae Lowell Ahart 1989-5-28 6292 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
  CAS-BOT-BC153661  Diplacus mephiticus R. Banchero 1980-7-7 292 Butte 1.1 mi e of Camp 18, Ca 5 mi ne of town of Feather Falls 1280 Comment
  CHSC1776  Diplacus torreyi 1932-5-20 Butte Along roadside at Kimshew Falls bridge, near Stirling. 1005 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
  CHSC44769  Diplacus torreyi R. Banchero 1980-6-17 246 Butte Along the Skyway 1.1 mi NE of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  CHSC3620  Dodecatheon clevelandii subsp. patulum John Francis 1966-2-21 22 Butte 1/2 mile S. of intersection on Neal Rd. and Hwy 99E on Neal Road. Plant growing in pasture. Comment
  CHSC24977  Dodecatheon hendersonii J. Cox 1976-3-10 41 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., along w edge of Mt., 4.3 mi ne of Oroville. 426 Comment
  UC725366  Dodecatheon hendersonii A. A. Heller 1938-4-3 15011 Butte near Cherokee (Table Mountain); , near Cherokee Comment
  UCD38751  Dopatrium junceum Beecher Crampton 1957-9-17 4622 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  UC220573  Downingia bicornuta var. bicornuta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2083 Butte near Chico Comment
  UC764505  Downingia bicornuta var. bicornuta R. F. Hoover 1938-4-24 3250 Butte 3 mi e Richvale Comment
  CHSC84254  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  UC890622  Downingia cuspidata Elmer I. Applegate 1928-4-27 5378 Butte between Richvale and Biggs Comment
  CHSC76938  Downingia insignis Ida Ryan 1893-5-1 Butte Near Nelson. Comment
  UC195392  Downingia insignis A. A. Heller 1914-5-30 11468 Butte about 6 mi nw Chico; Sacramento Valley Comment
  CHSC19930  Draba verna M. S. Taylor 1975-3-3 396 Butte Along creek ca. 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 182 Comment
  RSA767797  Draba verna L. Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  JEPS119718  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC157791  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  JEPS104154  Dryopteris arguta Lowell Ahart 2003-7-12 10375 Butte On the sides of a wash, on the w side of Milsap Bar Rd, ca 1/8 mi south of the bridge across the North Fork of the Feather River, ca 4 mi (air) ne of the Brush Creek Work Center, ca 20 mi (air) ne of Oroville. 997 Comment
  UCD80275  Dryopteris arguta CNPS SN Foothill Team 2005-3-30 SNFN 0070 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  UC115213  Dudleya cymosa Mrs. R. M. Austin May 1896 123 Butte Iron Canyon Comment
  UCD149846  Dudleya cymosa Harry George 1967-4-24 s.n. Butte Table Mt. Comment
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  CHSC112740  Dysphania ambrosioides Lowell Ahart 2013-11-17 19266 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC47403  Dysphania ambrosioides Lowell Ahart 1989-11-12 6404 Butte In a disturbed area near a small pond, 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
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico Comment
  CHSC116141  Dysphania botrys Lowell Ahart 2015-10-26 20594 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
  CHSC62446  Dysphania botrys L. P. Janeway 1993-9-7 4588 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC62447  Dysphania botrys L. P. Janeway 1993-9-3 4581 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  CHSC94598  Dysphania botrys Lowell Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC113149  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  JEPS120037  Echinochloa colona Lowell Ahart 2012-9-28 18460 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC197094  Echinochloa crus-galli Ira L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico 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
  SEINET6830746 Image available Echinochloa crus-galli L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville 50 Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  UCD61109  Echinochloa oryzicola E. Dean; with J. Ditomaso and E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  JEPS124280  Egeria densa Lowell Ahart 2015-11-18 20653 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  POM312315  Elatine ambigua H. L. Mason, Verne Grant, C. T. Mason 1946-8-15 13052 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC80523  Elatine heterandra Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CAS-BOT-BC113457  Eleocharis bella Clarence Roy Quick 1963-7-16 63 52 b Butte Section Corner Meadow, E of Pulga, Feather River canyon. 1463 Comment
  CHSC45168  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Near Kunkle Creek and a new road, about 1/2 mile north of Kunkle Reservoir, about 2 mles south of Paradise. 548 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 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
  CHSC36358  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising 1982-6-4 1592 Butte Along the edges of Concow Cr. at its headwaters just S. of Flea Valley. 1097 Comment
  JEPS113682  Eleocharis engelmannii Lowell Ahart 2007-7-27 14395 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte 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. Comment
  CHSC31666  Eleocharis macrostachya L. Ahart 1972-6-20 114 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31667  Eleocharis macrostachya L. Ahart 1975-6-19 792 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC71405  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte Bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 Comment
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. 57 Comment
  CHSC78399  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 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
  CHSC56614  Eleocharis parishii L. P. Janeway 1988-6-25 2856 Butte Ridge top above Clark Road (Hwy 191) 4.9 mi north of Durham-Pentz Road. 381 Comment
  HSC97764  Eleocharis parishii L. Ahart 2000-5-30 8409 Butte 1/4 mi. NE of Kunkle Reservoir, E of Pentz Magalia Rd., 2 mi. S of Paradise 549 Comment
  CHSC78315  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  RSA691016  Eleocharis rostellata L. Ahart, John Dittes, Josephine Guardino, Steven Green 2003-5-27 10224 Butte about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzinita Avenue, Chico. 122 Comment
  CAS-BOT-BC112032  Eleocharis suksdorfiana M. S. Taylor 1978-6-24 1668 Butte In Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows. 1371 Comment
  CHSC100885  Eleocharis suksdorfiana L. P. Janeway; Linus Gog 2008-7-19 9438 Butte High Cascade Range. Along the east side of Butte Creek 1.0 air km west of Cherry Hill Campground; just downstream of 'Pat's Meadow. 1399 Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  CHSC44454  Elymus glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UCD61891  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico meadows. 1219 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  SEINET10791331  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 Ahart 6165 Butte Parish's Wheatgrass. On dry rocky soil, on a rocky outcrop south of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CHSC36554  Elymus triticoides L. Ahart 1982-7-10 3668 Butte Ca. 1/12 mi e of checking station, Graylodge Wildlife Refuge Station, on n side of road. 35 Comment
  CHSC28794  Enemion occidentale J. D. Jokerst 1979-3-31 183 Butte Just s of Little Chico Cr. Comment
  CHSC84384  Enemion occidentale Lowell Ahart 1968-2-22 Butte Swede's Flat Road. 304 Comment
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 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 farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  JEPS88582  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8078 Butte US Fish & Wildlife Service parcel betw 7 Mile Lane and Sacramento R. (edge of farm rd. crossing branch of Angel Slough w of Refuge HQ's at s.e. corner of Tract 1, Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  UCD105646  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-10-11 3863 Butte 1/10 mile SE of HQ, Graylodge Wildlife Refuge, ca. 12 miles SW of Gridley. 35 Comment
  CHSC58931  Epilobium ciliatum subsp. glandulosum Lowell Ahart 1992-7-26 6853 Butte In a meadow along a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC58927  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte In a depression, on slopes, about 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC70340  Epilobium minutum R. A. Schlising 1980-6-23 3771 Butte SE part of county; 1.2 mi S of S end Sly Creek Reservoir Dam, at Strawberry Valley Creek (=2.2 mi N of La Porte Road). Roadside. 1059 Comment
  JEPS34387  Epilobium minutum Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8863 Butte above side road off U.S. highway 40 (at n base of grade over Jarbo Gap and just before bridge across Feather River, 0.75 mi s of Pulga); Canyon of N. Fk. Feather River 426 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  CAS-BOT-BC57258  Equisetum laevigatum John Thomas Howell 1975-6-15 51072 Butte Butte Creek near Chico 60 Comment
  CHSC24939  Equisetum telmateia subsp. braunii W. A. Vaccaro 1976-4-17 2 Butte Population ca. 2.5 mi e of Centerville, 200 yds s of Humbug Road. 128 Comment
  CAS-BOT-BC204456  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  UCD62970  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CHSC110982  Eragrostis curvula Lowell Ahart 2012-7-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. 162 Comment
  CHSC116151  Eragrostis hypnoides Lowell Ahart 2015-10-26 20603 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  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
  CHSC112736  Eragrostis pectinacea var. pectinacea Lowell Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC38820  Eragrostis pectinacea var. pectinacea Vernon Oswald 1983-6-18 710 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC44922  Eragrostis pectinacea var. pectinacea Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  SBBG115841  Eragrostis pilosa B. Crampton 1963-9-9 6884 Butte Honcut Comment
  SEINET10791410  Eragrostis pilosa B. Crampton 1963-9-9 Crampton 6884 Butte Honcut. Comment
  SEINET10864765  Eragrostis pilosa A. Arthur Heller 1914-8-20 Heller 11688 Butte Plentiful in a young olive orchard 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC45106  Eragrostis pilosa var. pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  UC1562293  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-15 6558 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area); Lake Oroville 243 Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  UC754020  Eremocarpus setiger H. F. Copeland 1937-7-30 1604 Butte near Oroville (arid roadside) Comment
  CHSC91263  Eremogone cliftonii L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-5-25 8396 Butte Northern High Sierra Nevada. Plumas National Forest; top of south-trending granite ridgetop with large rounded rock outcrop-pings; 1.3 km northeast of Flea Mountain; drainage of Dogwood Creek. 1152 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CHSC50545  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi north of its junction with Philbrook Rd, just west of Philbrook Reservoir. 1706 Comment
  POM57253  Ericameria linearifolia A. A. Heller, H. E. Brown 1902-5-16 5558 Butte Marysville Buttes (rocky slope of East Butte) Comment
  CHSC43241  Erigeron bonariensis Lowell Ahart 1987-9-24 5897 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC69447  Erigeron canadensis Lowell Ahart 1997-9-6 7886 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CAS-BOT-BC296823  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  SEINET10473744  Erigeron inornatus Lowell Ahart 1983-8-16 Ahart 4284 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC84726  Erigeron inornatus var. inornatus L. P. Janeway; Christine Hantelman 2003-6-19 7851 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CAS-BOT-BC216044  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch about 2 1/2 miles north-east of Forbestown 868 Comment
  RSA31114  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville. Butte Creek. 76 Comment
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  NY282106  Eriogonum microthecum var. laxiflorum R. R. Halse 1988-8-13 3756 Butte Along U.S. Hwy 20/26, 3.3 miles northeast of the entrance to Craters of the Moon National Monument, at milepost 233. 1680 Comment
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Feb 29 2016
  CAS-BOT-BC261713  Eriogonum nudum var. oblongifolium Lowell Ahart 1981-7-7 2930 Butte Along edge of dirt road about 0.5 mile west of Forbestown Reservoir, northeast of Forbestown 750 Comment
  JEPS87143  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  UC1594558  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  JEPS113301  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-8-9 8836 Butte Northern High Sierra Nevada. Plumas National Forest; along the northwest edge of Mooreville Ridge 9.6 air km west-soutwest of La Porte. Comment
  RSA0089890  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection, Highway 70. 457 Comment
  UCD101504  Eriogonum umbellatum var. torreyanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC262211  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville 2050 Comment
  CAS-BOT-BC262214  Eriogonum ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak 2157 Comment
  CHSC43709  Eriogonum ursinum var. ursinum Vernon Oswald 1983-6-22 747 Butte On the s side of Humbolt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile southeast of Lumpkin Ridge Road about 1 1/2 miles east of Camp 18 about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC308156  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1945-5-12 45044 Butte Richardson Springs 304 Comment
  CHSC21274  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1975-5-30 394 Butte On the n side of Upper Bidwell Park Rd, ca. 3 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  CHSC330  Eriophyllum lanatum var. grandiflorum B. Richardson 1929-4-18 Butte Plains near Chico. 60 Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  SFV3891  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 92 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC1118260  Eriophyllum lanatum var. grandiflorum J. E. Sowder 1933-6-6 80 Butte 0.5 mi nw of Nelson's Bar; Chico Quadrangle 457 Comment
  CHSC29992  Erodium brachycarpum L. Ahart 1980-4-7 Butte Along Swedes Flat Road, near Bangor, on damp granitic soil near the bridge across Rocky Honcut Creek. 320 Comment
  CHSC92575  Erodium brachycarpum L. P. Janeway 2005-3-10 8357 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC3907  Erodium moschatum J. Wheler 1967-5-20 30 Butte Along west side of house at 248 Serviss St. Durham. Comment
  CHSC52400  Erodium moschatum Rod Robertson 1979-3-20 10 Butte 10 ft S of Humbug Rd, 100 ft W of Honey Run Rd, 4.3 mi E of Skyway. 85 Comment
  CAS-BOT-BC41445  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CAS-BOT-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  UCD72992  Eryngium vaseyi Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  HSC38053  Eryngium vaseyi Thomas W. Nelson, Jane P. Nelson 1976-5-9 2459 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC151492  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, Ca 2.5 mi e of the jct of Zink Rd and Bald Rock Rd. 975 Comment
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  OBI9413  Erythranthe glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  CHSC105769  Erythranthe guttata Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km NE of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  CHSC95217  Erythranthe guttata R. D. Fischer 2004-5-2 799 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected on the south side of Big Chico Creek near north end of park boundary. 228 Comment
  CAS-BOT-BC153576  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  CHSC3634  Erythranthe nasuta Alice L. Stoll 1966-2-28 30 Butte 7.9 miles N.E. of First and Main Streets, Chico. Salmon Hole, Upper Bidwell Park. Comment
  CHSC45025  Erythranthe nasuta Cathy Young 1988-4-23 10 Butte 1/4 mi w of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC98996  Erythranthe nasuta Lowell Ahart 2008-5-21 14774 -A Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10469662  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3516 Butte T23N R4E west center sec 36, Pulga SW quad. Open reddish serpentine slope, between Ponderosa Way/Rim Rd and Concow Rd, ca. 1/10 mi s of their jct, ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 22 air mi n of Oroville. 3200 ft. 975 Comment
  CHSC2267  Erythronium multiscapideum P. Delaplane 1965-5-4 54 Butte On S side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CHSC49690  Erythronium multiscapideum Vernon Oswald 1985-4-3 1697 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC65606  Erythronium multiscapideum L. P. Janeway 1995-5-18 4764 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1155 Comment
  UC1731208  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  CAS-BOT-BC504540  Erythronium multiscapideum Jim Riley 1923-3-23 s.n. Butte About 3 miles above Centerville Comment
  HSC23466  Erythronium multiscapideum J. L. Wilson 1970-2-27 207 Butte Canyon side NE of Paradise, 0.65 mi. E of intersection of the steep gravel rd. and Coutolenc Rd. on the gravel rd., intersection 0.15 mi. NE of intersection of Coutolenc Rd. and skyway 579 Comment
  CHSC38577  Eschscholzia caespitosa Vernon Oswald 1983-2-23 94 Butte Upper Bidwell Park, Chico, along Yahi Trail 400 ft w of Salmon Hole Parking Area. 146 Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  CHSC236  Euonymus occidentalis V. Holt; M. Underhill 1952-7-7 Butte Magalia. 670 Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  CHSC25348  Euphorbia crenulata Marc P. Hayes 1977-4-22 18 Butte Ca. 2 km nw of Jarbo Gap, ca. 11 km w of Paradise. Forest, along Hwy 70, ca. 20 m n of Rd. 660 Comment
  RSA0020538  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76deg.) of Biggs 58 Comment
  CHSC115428  Euphorbia peplus Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET10453783  Euphorbia serpillifolia var. hirtula Mary Susan Taylor 1978-7-18 Taylor 1704 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  JEPS120023  Euthamia occidentalis Lowell Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC113429  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CDA35053  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada; Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  RSA300178  Festuca californica var. californica J. T. Howell, Gordon H. True 1967-6-11 42564 Butte On NW side of Feather River Canyon near Pulga Bridge. 427 Comment
  CDA14179  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Small colonies of bunching individuals in dry, deep shade of coniferous forest. Perennial Comment
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10507968  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC35072  Ficus carica R. A. Schlising 1981-11-28 4222 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  CAS-BOT-BC55648  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CAS-BOT-BC55651  Frangula purshiana A. A. Heller 1913-6-7 10821 Butte West Branch of the North Fork of the Feather river near Stirling 914 Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  CHSC39925  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  CHSC43730  Frangula purshiana Vernon Oswald 1984-6-7 1269 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. 1109 Comment
  CHSC46219  Frangula rubra Pauleen Broyles 1987-5-18 1023 Butte In town of Paradise. Along both sides of bicycle path (old RR bed) in remnant of Yellow Pine Forest. Comment
  SEINET10840747  Fraxinus dipetala Mary Susan Taylor 1975-4-25 Taylor 498 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
  CHSC42761  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UC175530  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Big Chico Creek Chico Comment
  HSC66271  Fremontodendron californicum M. S. Taylor, J. D. Jokerst 1980-5-15 2638 Butte 1/4 mi. E of Cohasset Rd. on Cohasset Ridge, 9 mi. NE of Chico 396 Comment
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CAS-BOT-BC130321  Fritillaria eastwoodiae M. S. Taylor 1979-3-20 1947 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville 304 Comment
  CHSC32730  Fritillaria recurva M. S. Taylor 1981-4-8 3506 Butte Ca. 0.5 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  UC726736  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte near Stirling Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CAS-BOT-BC508151  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  SEINET10469524  Fritillaria recurva Mary Susan Taylor 1981-4-8 Taylor 3506 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10905360  Fritillaria recurva Mary Susan Taylor 1981-5-21 Taylor 3784 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC1613  Galium aparine E. Crouch 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC78268  Galium aparine Lowell Ahart 2000-6-29 8534 Butte In 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
  CHSC82424  Galium aparine Lowell Ahart 2002-5-7 9630 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC28016  Galium bolanderi M. S. Taylor 1978-7-21 1801 Butte Ca. 1 mi N of Lake Madrone, on E side of Oroville-Quincy Hwy. 609 Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  SEINET10968826  Galium bolanderi Mary Susan Taylor 1981-5-5 Taylor 3611 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC29769  Galium divaricatum M. S. Taylor 1980-5-24 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS107756  Galium divaricatum Lowell Ahart 2005-5-11 11797 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  SEINET10968829  Galium nuttallii Mary Susan Taylor 1979-3-20 Taylor 1940 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10500638  Galium parisiense Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4061 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  UCD121893  Galium porrigens George F. Hrusa 1990-4-4 7644 Butte Throughout SE to NE side of North Butte. 350 Comment
  JEPS3276  Galium porrigens var. tenue Roxana S. Ferris 1952-5-16 12474 Butte 5 mi s Cherokee (on road to Oroville) 335 Comment
  RSA755758  Galium porrigens var. tenue L. Ahart 2009-5-23 15753 Butte South side of Ten Mile House Road, Upper Bidwell park, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 462 Comment
  SEINET10500744  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-9-12 Taylor 3332 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC26834  Galium trifidum var. pacificum M. S. Taylor; M. Hayes 1978-6-24 1638 Butte On Ernies Island in Butte creek at its jct with Old Humboldt Rd, ca. 1/2 mi W of Butte Meadows. Comment
  CHSC61011  Galium trifidum var. pacificum Lowell Ahart 1993-6-26 7017 Butte Near center, section 24. North of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC78270  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte Edges of a pond, on the southeast side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC116748  Gamochaeta ustulata Lowell Ahart 2016-5-24 20853 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC169938  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 502 Comment
  SEINET12137328  Garrya fremontii M. S. Taylor, Pierce, E. 1981-1 3375 Butte both sides of Cohasset Hwy, ca 3 mi S of Cohasset Comment
  CHSC58286  Gastridium phleoides Lowell Ahart 1992-5-9 6755 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  RSA716153  Gastridium phleoides L. Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET4571746  Gastridium phleoides R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  JEPS98425  Gastridium ventricosum Lowell Ahart 2000-5-13 8340 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10790827  Gastridium ventricosum Lowell Ahart 2003-6-20 Ahart 10295 Butte T17N, R4E, southeast 1/4 Section 3. Normal size plants, on dry soil, in open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  UC1609290  Gaultheria ovatifolia Lowell Ahart 1993-8-8 7149 Butte 1/2 mi nw of Lewis Flat (3/4 mi nw of the Sly Creek Dam) 1097 Comment
  UC1122602  Gayophytum diffusum subsp. parviflorum H. S. Yates 1936-8-13 6117 Butte 3/4 mi e Butte Meadow; Paynes Creek Quadrangle 1341 Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  CHSC58933  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte East of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  UC107803  Gayophytum heterozygum D. Cleveland 1882-8-4 Butte West Branch Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  UC204405  Gayophytum heterozygum A. A. Heller 1914-7-22 11583 Butte Little Summit 1463 Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC29403  Gayophytum humile R. A. Schlising; R. Banchero 1980-6-12 3717 Butte Chico Meadows, off Scout Road 1.1 mi N of Butte Meadows jct of Humboldt Road and Skyway/Humbug Road; dry margins of meadows and at streamsides. 1316 Comment
  UCD22552  Genista monspessulana James I. Mallory 1970-5-26 375 Butte Along little Butte Creek, up 100' above creek north of Paradise. 259 Comment
  CHSC45095  Gentiana newberryi var. newberryi Pauleen Broyles; R. A. Schlising, L. P. Janeway, B. Castro 1987-7-19 1076 Butte Ca 17 km ne of Inskip. Meadow on n side of Coon Hollow Creek. 1638 Comment
  CHSC3968  Geranium carolinianum J. Senter 1967-4-10 18 Butte Located 200 yds. S. E. slope ca. 60 yards from Honeyrun Road. 76 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 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
  SEINET10870230  Geranium molle Mary Susan Taylor 1976-3-30 Taylor 1039 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  RSA31676  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte along the Feather River Highway, 22 miles from Oroville Comment
  JEPS98428  Gilia capitata subsp. pedemontana Lowell Ahart 2000-5-31 8416 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  POM225868  Gilia capitata subsp. pedemontana J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  SEINET10496751  Gilia leptalea Mary Susan Taylor 1978-7-19 Taylor 1762 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC3474  Gilia tricolor Roger Jaegel 1966-3-29 71 Butte Located two miles southeast of Cherokee on the top of Table Mountain. Cherokee. Comment
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Jan 19 2011
  SEINET12350112  Gilia tricolor subsp. tricolor Unknown 1998-4-11 7 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  CHSC34815  Githopsis diffusa subsp. robusta M. S. Taylor 1981-5-21 3768 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  UC727174  Githopsis pulchella subsp. campestris A. A. Heller 1941-5-9 16106 Butte Clark Road, foot of the Paradise grade Paradise Grade Comment
  CHSC32128  Githopsis specularioides L. Ahart 1973-5-6 213 Butte Swedes Flat Rd, near Bangor. 457 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  JEPS103542  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CAS-BOT-BC280566  Glyceria elata Lowell Ahart 1985-6-30 5079 Butte East of the dirt road (near road) to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC44455  Glyceria occidentalis Lowell Ahart 1988-5-29 6014 Butte Bottom of a wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  CHSC78959  Glyceria occidentalis Lowell Ahart 2000-10-21 8713 Butte About 100 feet north of Hmilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET10905046  Gnaphalium Mary Susan Taylor 1979-10-13 Taylor 2257 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CAS-BOT-BC302470  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  SEINET10474254  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4688 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  POM180883  Goodyera oblongifolia H. F. Copeland 1924-8-10 857 Butte Jonesville. Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  JEPS104637  Grindelia hirsutula Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, ca 1/8 mi e of Bean Creek Rd, ca 1 1/4 mi (air) se of Little Bald Rock, ca 4 mi (air) se of Brush Creek. 801 Comment
  SEINET10724142  Grindelia hirsutula Melvin L. Conrad 1973-6-5 Conrad 7025 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC28513  Grindelia hirsutula var. davyi M. S. Taylor; J. D. Jokerst 1979-10-13 2262 Butte On Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. mi e of Paradise. 609 Comment
  CHSC31608  Grindelia hirsutula var. davyi L. Ahart 1977-10-19 1604 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97328  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills. Along the Oroville-Quincy Hwy 0.3 road km southwest of the south end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville. 306 Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. Comment
  JEPS120073  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC30790  Hedypnois cretica M. S. Taylor; L. Ahart 1979-5-6 2005 Butte Peter Ahart Ranch, Honcut. 15 Comment
  JEPS104336  Hedypnois rhagadioloides Lowell Ahart 2003-5-15 10179 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  CHSC27976  Heliotropium europaeum M. S. Taylor 1978-8-11 329 1/2 Butte In field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. 30 Comment
  JEPS115652  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET10902879  Heliotropium europaeum Mary Susan Taylor 1974-10-11 Taylor 329 A Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC35660  Helminthotheca echioides R. E. Preston 1982-4-22 248 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  RSA121034  Hemizonia luzulifolia J. T. Howell 1955-9-6 30909 Butte Butte Creek E of Butte City on road to Oroville. Comment
  CHSC94089  Hesperevax acaulis var. robustior R. Fischer 2005-3-27 680 Butte Chico. Collection from Bidwell Park along the lower South Rim Trail just above old pistol range. 76 Comment
  CHSC11386  Hesperevax caulescens Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC115298  Hesperocyparis macnabiana Lowell Ahart 2015-4-30 20117 Butte On dry bare serpentine soil, about 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  SD64391  Hesperocyparis macnabiana Darley F. Howe 1966-9-1 Butte Magalia 580 Comment
  CHSC107891  Hesperolinon californicum L. P. Janeway 2011-6-29 10412 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC1012  Hesperolinon micranthum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC109201  Hesperolinon micranthum B. Castro; L. P. Janeway 2004-6-13 1468 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road, 2.25 air mi E of Forbestown; near headwaters of costa Creek; p.15 rd mi NW of jct with Abernathy Rd. 829 Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS117615  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and 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
  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
  CHSC38644  Heteromeles arbutifolia Vernon Oswald 1982-12-17 25 Butte Bidwell Park, Chico, between Chico Creek and Upper Park Rd about 200 ft w of the end of the pavement. 91 Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC43243  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC61013  Heuchera micrantha var. erubescens Lowell Ahart 1993-7-6 7057 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC423450  Heuchera micrantha var. micrantha Saichi Kawahara 1968-5-4 382 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC27941  Hieracium albiflorum M. S. Taylor 1978-7-18 1677 Butte On w side of Hwy 32 on edge of forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC21131  Hirschfeldia incana M. S. Taylor 1975-10-29 974 Butte On n side of Butte Creek, ca. 4 mi e of junc of Humbug Rd and the Skyway. Comment
  CHSC33184  Hirschfeldia incana R. E. Preston 1981-5-27 72 Butte On n shoulder of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  CHSC33185  Hirschfeldia incana R. E. Preston 1981-6-1 74 Butte Roadside; at the jct of Hwy 32 and Humboldt Rd., ca. 8 km e of Chico. 293 Comment
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  CHSC25262  Hoita macrostachya M. S. Taylor 1977-6-27 1394 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 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
  CHSC85916  Holodiscus discolor L. P. Janeway; Christine Hantelman 2003-7-3 7865 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.8 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. 276 Comment
  CHSC71214  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte About 3/8 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. 388 Comment
  JEPS122157  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC2151  Hordeum marinum subsp. gussoneanum H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E. of Chico. 121 Comment
  CHSC27569  Hordeum marinum subsp. gussoneanum Robert Schlising 1978-5-17 3261 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  UCD80562  Hordeum marinum subsp. gussoneanum CNPS SN Foothill Team 2005-5-3 SNFN 0198 c Butte City of Chico, Doe Mill Meadowfoam Preserve, ~200 m at 240 degrees from the preserve gate, and ~75 m from the east fence. 85 Comment
  CDA34145  Hordeum murinum subsp. leporinum L. Ahart 2009-4-3 15536 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC99016  Hordeum murinum subsp. leporinum Lowell Ahart 2008-5-21 14781 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC71189  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD113497  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CAS-BOT-BC143358  Horkelia tridentata Lowell Ahart 1982-5-8 3413 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC1558  Horkelia tridentata P. Delaplane 1965-5-4 50 Butte Found at E end of Lake Concow on Concow Road. 1219 Comment
  UC176390  Horkelia tridentata subsp. tridentata A. A. Heller 1913-6-7 10793 Butte near Stirling 1036 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  HSC73113  Hosackia stipularis var. stipularis M. S. Taylor 1981-5-7 3647 Butte S side of Field Ridge Rd. (20N24), 4.7 mi. S of its jct. with Lumpkin Rd., 2 air mi. SE of Feather Falls. 1037 Comment
  CHSC6655  Hydrangea M. MacArthur 1968-6-23 287 Butte Ca. 20 ft. SW PSA bridge and 25 ft. NW of Big Chico Creek, Chico State College. 60 Comment
  JEPS98700  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET10497072  Hydrophyllum occidentale Mary Susan Taylor 1981-4-16 Taylor 3543 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
  CAS-BOT-BC400833  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC104748  Hypericum concinnum L. P. Janeway 2010-6-19 10023 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CAS-BOT-BC410222  Hypericum concinnum Clarence R. Quick 1964-7-9 64 -55 Butte north of Jarbo Gap Comment
  UC774522  Hypericum concinnum Carl B. Wolf 1941-7-23 11052 Butte 6.6 mi. w. De Sabla (on rd. to Forest Ranch); Northern Sierra Nevada 762 Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 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
  CAS-BOT-BC401196  Hypericum mutilum Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC401334  Hypericum scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  UCD80076  Hypochaeris radicata CNPS SN Foothill Team 2005-4-15 SNFN 0082 b Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence). 81 Comment
  UC398944  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville 1500 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC133552  Iris hartwegii Lowell Ahart 1980-5-19 2316 Butte 1 mile E of Golden Trout Crossing 900 Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  SEINET223495  Isoetes howellii Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  CHSC30306  Isoetes nuttallii M. S. Taylor 1980-5-27 2678 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  HSC66269  Isoetes nuttallii M. S. Taylor, J. D. Jokerst, L. Ahart 1980-6-4 2438 Butte 500 yards N of Swedes Flat Rd., 50 ft. W of Rocky Honcut Creek, 2 mi. E of Oroville-Bangor Hwy. 10 mi. S of Oroville 366 Comment
  CHSC44440  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 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
  CHSC99485  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC20505  Juglans californica var. hindsii M. S. Taylor 1975-5-6 559 Butte Ca. 50 ft w of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  RSA299477  Juglans hindsii J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Road 1 mile west of Cohasset Road near Chico Comment
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC31925  Juncus bufonius var. bufonius J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 840 Butte 0.1 mi W of junction of Skyway and Humboldt Rd., N of and adjacent to the latter. Comment
  CHSC78329  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte Along 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
  JEPS113864  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 A Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC73490  Juncus covillei var. obtusatus B. Castro; L. Gehrung 1995-7-26 598 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. Meadow E of road. 1143 Comment
  CHSC96909  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 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
  CDA42851  Juncus effusus var. pacificus L. Ahart 2011-8-19 17637 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  CHSC99313  Juncus ensifolius Lowell Ahart 2008-5-30 14801 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  POM110832  Juncus ensifolius C. C. Bruce 1897-05 1880 Butte Little Chico Comment
  CHSC61348  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-7-29 7120 Butte About 2 1/2 miles northeast of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  HSC95782  Juncus howellii L. Ahart 1997-7-11 7748 Butte N of dirt rd. SE of Cold Creek, about 2 mi SW of Bald Mtn. 1220 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  CHSC47561  Juncus leiospermus Lowell Ahart 1984-4-6 4543 Butte About 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1586561  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte about 2 1/4 mi n and 1/2 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 39 Comment
  CAS-BOT-BC110137  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-29 1895 Butte Sierra Nevada. Near Krinkle Reservoir, ca. 2.5 miles southeast of Paradise. 500 Comment
  CAS-BOT-BC110142  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 s.n. Butte Sierra Nevada. Table Mountain, ca. 7 miles north of Oroville. 400 Comment
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CHSC93498  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 354 Comment
  JEPS104276  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of vernal pool, ca 70-100 feet sw of section corner pipe, ca 1/8 mi sw of tall Digger Pine on s edge of Beatson Hollow, ca 1 1/4 mi nw of iron gate and fence, nw of Cherokee Rd, North Table M., ca 7 mi (air) n of Oroville. 299 Comment
  RSA712858  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12581 Butte About 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parking area. North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  RSA368146  Juncus mexicanus H. F. Copeland 1931-6-11 1514 Butte Jonesville, Butte Creek Meadows 1829 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
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC57158  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 B Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC78342  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of No-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  RSA0119330  Juncus orthophyllus Lowell A. Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC50383  Juncus patens Vernon Oswald; Lowell Ahart 1990-5-26 4256 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC31928  Juncus tenuis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 844 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with the Skyway, community of Butte Meadows. 1341 Comment
  UCR246367  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Northern Sierra Nevada Highlands (n SNH), near parking lot for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock 1050 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC100342  Juncus trilocularis Lowell Ahart 2008-7-9 15069 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC29053  Juncus uncialis R. A. Schlising 1980-4-2 3551 Butte Richvale vernal pools, 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  UC690220  Keckiella breviflora var. glabrisepala A. A. Heller and H. E. Brown 1902-5-6 5471 Butte near Clear Creek; Berry Canyon Comment
  NY790276  Keckiella corymbosa J. V. Monachino 1952-7-23 s.n. Butte Oroville, at outskirts of the city on the Feather River. Comment
  SEINET12765113  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table mountain, about 8 miles (air) northeast of Stirling City.; 0 1372 Comment
  CHSC62581  Kelloggia galioides B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 155 Butte Side of jeep road overlooking slopes on south side of Coon Hollow. 1828 Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 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
  CHSC58287  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  CHSC43002  Lactuca saligna Lowell Ahart 1987-7-17 5830 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC340532  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  CAS-BOT-BC341320  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  RSA71070  Lagophylla glandulosa L. S. Rose 1951-6-26 51017 Butte Feather River Canyon, NE of Oroville 183 Comment
  CHSC3268  Lamium amplexicaule M. L. Hillier 1966-3-14 2 Butte In orchard on n. side of Hwy. 32, 1 mile e. of Hamilton City. Comment
  UC727015  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC8123  Lasthenia fremontii J. G. Moore 1969-3-25 68 Butte Upper Bidwell Park, 200 yds. w of rifle range, 100 yds. n of golf course. Chico. 76 Comment
  UC2061406  Lasthenia gracilis Rachael L. Olliff Yang with Meagan F. Oldfather 2017-4-5 12 Butte Table Mountain, about 100 m North of the main public parking lot. Comment
  JEPS117244  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC213336  Lathyrus jepsonii subsp. californicus R. R. Kehlor 1951-4-14 26 Butte 6 1/4 miles east of Oroville on Mt. Ida Road Comment
  CAS-BOT-BC213344  Lathyrus jepsonii subsp. californicus Lowell Ahart 1980-6-20 2415 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  RSA406664  Lathyrus jepsonii subsp. californicus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CDA14068  Lathyrus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13716 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CAS-BOT-BC213292  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC31837  Lathyrus sulphureus L. Ahart 1977-4-16 1308 Butte Peter Ahart Ranch, Honcut. Along the banks and sides of North Honcut Creek. 50 Comment
  CHSC100983  Lathyrus tingitanus L. P. Janeway 2008-4-2 9243 Butte Northern Sierra Nevada Foothills. Oroville; along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam. 65 Comment
  CHSC82700  Lathyrus tingitanus Tara Morgan 2002-5-7 56 Butte Was seen in the Feather River Canyon just east of Highway 70 near the West Branch Bridge of the West Branch Feather River/Lake Oroville. It was all around the edges of the rest area parking . 318 Comment
  CHSC101986  Layia fremontii Richard A. Nichols 1980-8-18 1 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CHSC92574  Layia fremontii L. P. Janeway 2005-3-1 8340 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET11447713 Image available Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  CAS-BOT-BC321760  Layia fremontii Ira L. Wiggins 1925-3-25 1406 Butte 3.5 mi. E of Durham on States Land Colony Highway. Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10474773  Layia fremontii Mary Susan Taylor 1974-4-24 Taylor 190 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CAS-BOT-BC274352  Leersia oryzoides John Thomas Howell 1961-9-22 36730 Butte Bank of Feather River, Oroville 53 Comment
  JEPS94891  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte about 7 air mi n Oroville (w of the cattle chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CDA32427  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs 0 Comment
  CHSC103735  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC10677  Lepidium nitidum Lowell Ahart 1961-2-26 Butte Salmon Hole, Chico. 91 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  CDA38812  Leptochloa fascicularis L. Ahart 2011-10-29 17731 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CAS-BOT-BC273952  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  CAS-BOT-BC274012  Leptochloa fusca subsp. uninervia Lowell Ahart 1986-11-14 5480 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC50677  Leptosiphon acicularis Lowell Ahart 1990-4-7 6432 Butte In a pasture field, about 3 miles north and 1 1/2 miles east of Honcut, about 10 miles south of Oroville. 45 Comment
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Jul 19 2018
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  CHSC36821  Leptosiphon bolanderi M. S. Taylor 1981-5-21 3777 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC109164  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 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
  JEPS119765  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte 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. Comment
  JEPS124394  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 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
  SD122563  Leptosiphon ciliatus Lowell Ahart, Peter Ahart 1984-5-28 4645 Butte Ca. 1.0 mile northeast of the West Branch Bridge, ca. 2.0 miles south of Old Yankee Hill, ca. 16 miles northeast of Oroville. 449 Comment
  CHSC106865  Leptosiphon filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC63698  Lessingia nemaclada Lowell Ahart 1994-10-8 7550 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CHSC98889  Lessingia nemaclada L. P. Janeway 2007-10-8 9216 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; near North Rim Trail along ridge overlooking Salmon Hole. 351 Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  CAS-BOT-BC509474  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC46224  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1060 Butte Ca. 2.0 km s of Inskip on W. side of Skyway. 1400 Comment
  CHSC46225  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1059 Butte Ca 2.0 km s. of Inskip of w. side of Skyway. 1400 Comment
  CHSC25011  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville. 1500 Comment
  CAS-BOT-BC133042  Lilium washingtonianum subsp. washingtonianum Lowell Ahart 1986-7-2 5335 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CHSC71663  Lilium washingtonianum subsp. washingtonianum Vernon H. Oswald; Lowell Ahart 1998-8-11 9474 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  POM282581  Limnanthes alba Hattie Morrison 1928-05 s.n. Butte Near Oroville, Sierra Nevada Mountain Range, Feather River. Upper Sonoran. 305 Comment
  POM86187  Limnanthes alba R. M. Austin 1883-05 s.n. Butte No locality information provided. Comment
  UCD169373  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 s.n. Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC48595  Limnanthes alba subsp. versicolor Vernon Oswald 1985-4-23 1718 Butte Humbug Rd. 1.3 mi sw of its jct. with Nimshew Rd. 579 Comment
  CHSC60582  Limnanthes alba subsp. versicolor Vernon H. Oswald; Lowell Ahart 1993-4-21 5288 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  HSC23392  Limnanthes douglasii Willis Ball 1970-3-7 85 Butte Growing 1/4 mi. E of Hwy. 99E, beside Skyway to Paradise from Chico. 61 Comment
  SEINET12183093  Limnanthes douglasii A. K. Bos 1978-1 4 Butte Along Skyway at intersection of Skyway and Bruce Rd., 3.5 mi ESE of Chico Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC83909  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  CHSC33850  Limnanthes douglasii subsp. rosea R. E. Preston 1979-4-19 14 Butte Northernmost Butte County. Ditches along Cana-Pine Creek Road nw of Singer Creek. 56 Comment
  CHSC38539  Limnanthes douglasii subsp. rosea Vernon Oswald 1983-3-5 117 Butte Upper Bidwell Park, Chico, near the s-e corner of the Omicron Enclosure. 85 Comment
  CHSC48594  Limnanthes floccosa subsp. californica Vernon Oswald 1984-3-24 1104 Butte Chico Municipal Airport, ca. 200 ft n-e of the e end of Piper Ave. 82 Comment
  CHSC96360  Limnanthes floccosa subsp. californica R. L. Macdonald; C. L. Owens 2006-4-6 Butte Sacramento Valley. Openshaw Ranch BCAG mitigation area; 7 miles north of Oroville, 1.5 miles northwest of junction Hwy 149 and Hwy 70 (Wicks Corner), 400 ft northeast of Openshaw Road; 1000 ft northwest of Gillick-Evans Law Enforcement Training Center (shooting range). In vernal swale/vernal pool complex; at toe of slope at edge of pooling. 73 Comment
  CHSC41228  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1985-3-30 2188 Butte N. edge of county, plants scattered throughout this quarter section and N. into Tehama Co. 121 Comment
  CHSC55505  Limnanthes floccosa subsp. floccosa Pat Kelly 1991-3-31 Butte Arroyo Chico.' Along the southern branch of Sycamore Creek, from a few hundred feet east of the mouth of the Diversion Channel eastward to the power lines (ca 0.8 mi long). 82 Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC27988  Linanthus pungens M. S. Taylor 1978-7-18 1699 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC51016  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC84014  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC78547  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 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
  CHSC26769  Liquidambar styraciflua P. Moyer 1971-10-1 17 Butte CSUC campus. Along So-wil-len-no Ave. 60 Comment
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 Comment
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC49845  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1990-4-9 4156 Butte Feather Falls Trail between Frey Creek and Wagners Valley. 475 Comment
  CAS-BOT-BC123105  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte foothills Comment
  CHSC29287  Lithospermum californicum R. A. Schlising 1980-5-23 3597 Butte N of Lake Oroville State Rec. Area in Lassen Nat. Forest, 3.5 mi e junction Hwy 70 and Big Bend Road and from here, at community of Big Bend, 1.0 mi s; roadside. Comment
  CHSC30307  Logfia gallica M. S. Taylor 1980-5-27 2681 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC65889  Logfia gallica Vernon H. Oswald 1996-4-20 7403 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CDA2232  Lolium multiflorum T. C. Fuller 1962-5-17 8722 Butte Hwy 99 E to Vina, 14.5 miles northwest of Chico. 0 Comment
  CHSC27295  Lolium multiflorum P. Moyer 1972-4-9 172 Butte CSUC Campus. Sacramento Ave., across from sportshop. 60 Comment
  CHSC92511  Lolium multiflorum Lowell Ahart 2005-12-11 12519 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
  CHSC94679  Lolium multiflorum Lowell Ahart 2006-9-28 13382 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC45107  Lolium perenne Lowell Ahart 1988-9-4 6175 Butte Along the north side of a branch of Last Chance Creek, east of the dirt road, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  SEINET10592064  Lolium temulentum A. Arthur Heller 1914-6-2 Heller 11475 Butte Hills 8 miles north of Oroville. Comment
  CHSC104828  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico. 301 Comment
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  CHSC31068  Lomatium marginatum M. S. Taylor 1980-3-8 2371 Butte On shady trail ca. 100ft sw of Pulga bridge over hwy 70 at Feather River, ca. 28 mi ne of Oroville. 487 Comment
  SEINET10840943  Lomatium tomentosum Mary Susan Taylor 1980-3-30 Taylor 2412 Butte Upper Bidwell Park, Chico. 244 Comment
  HSC38280  Lomatium utriculatum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2482 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  SEINET10465153  Lonicera hispidula var. vacillans Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4066 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  JEPS115657  Lonicera interrupta Lowell Ahart 2009-5-30 15807 -A Butte North of a small drainage, on the east side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  SEINET10465144  Lonicera interrupta Lowell Ahart 1985-6-17 Ahart 5065 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  UC1609033  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte 6 (air) mi ne Feather Falls (about 200 yards w of the bridge, w side of river); Fall River 1036 Comment
  CHSC109073  Lonicera japonica Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte On the north side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CAS-BOT-BC200895  Lotus Marcus E. Jones 1911-6-26 s.n. Butte Oroville 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
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC80703  Lotus humistratus Mrs. R. M. Austin May 1883 46 Butte near Chico Comment
  SEINET10451975  Lotus humistratus Lowell Ahart 1985-5-31 Ahart 5038 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS55747  Lotus purshianus var. purshianus Harry A. Dutton 1921-1 Butte Chico Comment
  UC566229  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  UCD66033  Ludwigia hexapetala R. McKee; G. Woods 2006-8-1 06- 30 -LU Butte Oroville Wildlife Area, e. of Feather River, w. of Hwy 70 access from Pacific Hts Rd. 30 Comment
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 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
  CAS-BOT-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  NY16038  Lupinus A. A. Heller 1914-2-2 11166 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  UC726688  Lupinus A. A. Heller 1942-4-26 16439 Butte near road from Cherokee to Oroville on the flattened treeless summit summit of Table Mountain Comment
  CHSC33710  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-21 1334 Butte Along side of road. Ca 100 m NE of Dogwood Creek on Pulga Rd. Comment
  POM27143  Lupinus albicaulis var. shastensis Marcus E. Jones 1897-7-9 s.n. Butte On road from Ptrattville to Chico at Jonesville. 1524 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC201363  Lupinus albifrons var. albifrons Carl B. Wolf 1933-5-23 4903 Butte W. slope Sierra Nevada. 4 3/10 mi. No. of San Andreas on road to Mokelumne Hill 365 Comment
  CHSC68567  Lupinus albifrons var. albifrons Vernon H. Oswald; John Ost, Steven Sayre 1997-5-9 8411 Butte West side of Hwy. 32 just south of Lomo. 1158 Comment
  CHSC48524  Lupinus arbustus Vernon Oswald 1984-5-28 1212 Butte Cohasset Rd., 1.8 mi n of the end of the pavement. 1036 Comment
  RSA699513  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  UC600398  Lupinus arbustus H. F. Copeland 1930-7-27 Butte along South Willow Creek (Jonesville); along South Willow Creek, Jonesville 1828 Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  CHSC48525  Lupinus bicolor var. pipersmithii Vernon Oswald 1985-3-17 1686 Butte Peter Ahart Ranch ca. 2 mi ne of Honcut. 32 Comment
  UC727109  Lupinus formosus var. robustus A. A. Heller 1940-4-28 15561 Butte e Chico (along roadside between the radio station and Hooker Oak); ; between radio station & Hooker Oak, E of Chico, Butte Co. Comment
  SEINET10484003  Lupinus grayi Lowell Ahart 1985-6-17 Ahart 5046 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC36836  Lupinus latifolius var. columbianus M. S. Taylor 1982-6-24 4738 Butte E side of Lea Mt. ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CHSC39277  Lupinus latifolius var. columbianus Lowell Ahart 1983-7-29 4235 Butte Along the dirt road, about 1.4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC84644  Lupinus microcarpus var. densiflorus Matt Quinn 2001-4-29 51 Butte Found on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  POM10794  Lupinus pachylobus E. B. Copeland 1903-4-10 1273 Butte Chico. Comment
  SEINET7040276 Image available Lupinus pachylobus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate 40 [presently Route 70]. Oroville Quadrangle UTM Zone 10, 620674mE, 4386722mN. Comment
  CHSC111346  Lupinus polycarpus Lowell Ahart 2012-5-2 17952 Butte On damp dark clay soil, along the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC99017  Lupinus stiversii Lowell Ahart 2008-5-21 14782 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10452665  Lupinus stiversii Mary Susan Taylor 1981-5-6 Taylor 3627 A Butte T20N R6E ne sec 33. Forbestown quad. N side of Ponderosa Way, 0.2 mi N of small bridge over Sucker Creek, ca. 3 air mi E of Enterprise Bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1100 ft. 335 Comment
  CHSC32605  Lupinus succulentus J. D. Jokerst 1981-3-28 1270 Butte Butte College Campus along entrance in the vicinity of the eastern-most parking lot. Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  POM196138  Luzula comosa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  JEPS116099  Luzula macrantha Lowell Ahart 2009-5-15 15711 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
  CHSC110451  Luzula subsessilis L. P. Janeway 2013-5-20 11113 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  RSA0016015  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  UC1229853 Image available Lythrum salicaria Rimo Bacigalupi with G. T. Robbins 1955-7-22 5441 Butte about 2.5 mi s of Oroville (at junction of road to Palermo, along edge of Feather River); Feather River 48 Comment
  CAS-BOT-BC342718  Madia elegans Mrs. C. C. Bruce 1897-4-1 1986 Butte Forest - Ranch Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 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-BC344315  Madia exigua Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CHSC103957  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC45692  Madia exigua Vernon Oswald 1987-4-14 2321 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  CAS-BOT-BC344319  Madia exigua Lowell Ahart 1988-6-23 6068 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  CAS-BOT-BC345236  Madia subspicata Lowell Ahart 1980-5-25 2323 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC46430  Maianthemum racemosum Lowell Ahart 1989-5-29 6321 Butte Just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CAS-BOT-BC347380  Malacothrix floccifera John Thomas Howell 1951-6-26 27516 Butte Big Bend Mt. 609 Comment
  CHSC1035  Malva nicaeensis F. Johnson 1937-6-4 Butte Chico. 57 Comment
  JEPS115824  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 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 381 Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC5140  Marsilea vestita P. Delaplane 1965-3-23 45 Butte H. Wurlitzer Ranch; ca. 13 mi. NW of Chico, W of Hwy 99E N. Butte Co. 60 Comment
  CHSC3830  Matricaria discoidea R. L. Adams 1964-4-2 58 Butte Roadside W. of Chico 50 yds S. of junct. Rose Ave. and Bidwell Ave. E. side of road. Comment
  CHSC40914  Meconella californica Lowell Ahart 1973-4-15 204 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  UC1601096  Meconella californica Mrs. R. M. Austin Mar 1896 96 Butte Little Chico Creek Comment
  CAS-BOT-BC422640  Meconella californica W. R. Ernst 1958-3-27 215 Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  UC1601097  Meconella californica Mrs. Austin 1883-1 47 Butte hills W of Chico Comment
  CHSC21008  Medicago polymorpha M. S. Taylor 1975-4-25 504 Butte Ca. 20 mi ne of Chico on Cohasset Hwy, ca. 1/2 mi n of Horse trough. Comment
  CDA4218  Medicago polymorpha T. C. Fuller 1962-5-17 8703 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  UCD87014  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC99646  Melica torreyana H. Koeth 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). 471 Comment
  JEPS87139  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca. 2 (air) mi. n. Oroville (w. side of small stream, e. of Cherokee Rd., Lake Oroville Recreation Area); Lake Oroville Recreation Area 91 Comment
  CHSC31836  Melilotus albus L. Ahart 1978-7-15 1788 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  POM27431  Melilotus albus C. C. Bruce 1897-04 1850 Butte Butte Creek Comment
  CHSC3402  Melilotus indicus Alice L. Stoll 1966-5-7 158 Butte Bare Hole, Upper Bidwell Park, 7.4 miles from First and Main Streets. Comment
  CDA42940  Mentha arvensis L. Ahart 2012-10-2 18495 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. Comment
  SEINET178042  Mentzelia dispersa E. B. copeland 1929-7-19 385 Butte Jonesville, found on two rock -slides in full sunlight, along Butte Creek. 1550 Comment
  SEINET10480639  Mentzelia laevicaulis Mary Susan Taylor 1975-10-3 Taylor 946 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
  CHSC47992  Mertensia ciliata Vernon Oswald 1985-6-3 1807 Butte Scotts John Rd. 0.9 mi n of Rd 26N27 which connects Humboldt Rd. and Humbug Rd. ca. 2.25 air miles ene of Jonesville. Along the creek. 1767 Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CAS-BOT-BC428768  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville, on Mt. Ida road Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CAS-BOT-BC348463  Micropus californicus var. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC348696  Microseris acuminata Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  CHSC50316  Microseris nutans Vernon Oswald 1990-5-17 4217 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 3 mi northeast of Concow. 877 Comment
  CHSC24988  Microsteris gracilis M. Coulon 1974-3-3 39 Butte Located along the w side of Cohasset Road approx. 10 miles n of Chico, near Seven Toed Petes Wildlife refuge. Comment
  HSC32606  Microsteris gracilis R. A. Vanbianchi 1974-4-20 235 Butte Table Mtn. 305 Comment
  SEINET9800583 Image available Mimetanthe pilosa Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  RSA183143  Mimulus breweri E. B. Copeland 1930-7-28 s.n. Butte Neighborhood of Jonesville, along So. Willow Creek 1829 Comment
  UCD89434  Mimulus filicifolius Jason Sexton 2010-5-22 2 Butte East of Oroville, Big Bald Rock area. 932 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  SFV3394  Mimulus guttatus M. L. Vincent 1962-4-16 197 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  UC1609049  Mimulus layneae Lowell Ahart 1993-7-29 7116 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC445157  Mimulus microphyllus Mrs. R. M. Austin Apr. 1899 85 Butte plains e Chico Comment
  RSA4111  Mimulus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  RSA535418  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte NW of De Sabla. 0,25 mi N of Doe Mill Road along Garland Road. 600 Comment
  UC1552175  Mimulus torreyi Barbara Ertter 1988-6-19 7647 Butte ca 1/2 mi sw Jonesville (on road to Butte Meadows, n tip of Butte Co.) 1524 Comment
  JEPS107746  Mimulus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, 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 67 Comment
  JEPS4246  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte 7 mi from Chico (Chico-Oroville road) Comment
  CHSC6292  Minuartia californica W. O. Baum 1967-3-12 6 Butte In triangle area, on e side of Cohasset Rd. and 3.2 mi n of Chico. 60 Comment
  CHSC207  Minuartia cismontana S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  RSA304506  Minuartia douglasii Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3300 Butte North Table Mountain, 5 airmiles N of Oroville; flat-topped basalt butte, near parking area. 396 Comment
  CHSC99311  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 331 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS93834  Mollugo verticillata Lowell Ahart 1998-7-1 8029 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, in the tracks of poor dirt road about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CAS-BOT-BC435069  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville Comment
  SEINET6646074 Image available Mollugo verticillata Willis H. Wheeler 1945-1 Butte Chico; U.S. Plant Introduction Garden Comment
  CHSC52210  Monardella odoratissima L. P. Janeway; R. A. Schlising 1988-7-16 2999 Butte Between Colby Mtn Rd and Willow Cr, ca 1/2 mi NW of Jonesville. 1524 Comment
  CHSC27939  Monardella sheltonii M. S. Taylor 1978-7-18 1685 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  CHSC50676  Monardella sheltonii Lowell Ahart 1990-5-28 6502 Butte Near a deep pond, south of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC52048  Monardella sheltonii L. P. Janeway 1988-6-29 2908 Butte Along the road to The Lime Saddle, 0.2 mi from the Pentz- Magalia Hwy. 320 Comment
  RSA754450  Monardella sheltonii L. Ahart 2009-6-3 15822 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCD80681  Montia fontana CNPS SN Foothill Team 2005-4-15 SNFN 0082 c Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (ca. 20 m from the east fence and ca. 40 m from the north fence). 81 Comment
  CHSC34701  Montia linearis M. S. Taylor 1981-5-6 3624 Butte W side of rd leading to Jackson Ranch, ca. 1 mi sw of its jct with 21N254.1, ca. 5 air mi n of Feather Falls. 1127 Comment
  SEINET10572663  Montia linearis Mary Susan Taylor 1981-5-6 Taylor 3624 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  SEINET10962338  Montia sibirica var. heterophylla Mary Susan Taylor 1977-7-15 Taylor 1402 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  JEPS119751  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC113395  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC61544  Muhlenbergia filiformis Lowell Ahart 1993-7-6 7047 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  JEPS120698  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  RSA585114  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  CHSC51671  Muhlenbergia mexicana M. Bailey 1990-10-9 415 Butte In the vicinity of the intersection of the East and West Branches of Clear Creek, near Pentz Road on the Butte College campus. 85 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
  CHSC103438  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 215 Comment
  CHSC44274  Myosotis discolor V. Oswald; L. Ahart 1988-6-17 3406 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Near the creek where it flows through a meadow. 1066 Comment
  CHSC42763  Myosotis laxa Lowell Ahart 1987-8-3 5848 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  CHSC45423  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte On the sides of a small wash in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC61920  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte Pond, on the north side of Grubbs Road, about 4 miles east of Palermo. 152 Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  CHSC28574  Myriophyllum spicatum M. S. Taylor; J. D. Jokerst 1979-11-11 2277 Butte Aquatic in irrigation ditch, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC66685  Najas gracillima Vernon H. Oswald; Lowell Ahart 1996-7-22 8093 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 shallow water on the S side of Tract 3.1, Sanctuary II. 32 Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC30273  Nassella pulchra M. S. Taylor 1979-5-4 1997 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek Rd., ca. 26 mi ne of Oroville. 1005 Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC28859  Navarretia divaricata J. D. Jokerst; T. B. Devine 1979-5-18 462 Butte Top of North Table Mt, ca 200 met N of jct of Cherokee Rd and E edge of Mt. Comment
  CHSC34986  Navarretia divaricata R. A. Schlising; R. Banchero 1981-5-20 4059 Butte E part of county, Lumpkin Ridge. Comment
  CHSC34987  Navarretia divaricata R. A. Schlising; R. Banchero 1980-7-11 3879 Butte Merrimac, in NE part of county. 1203 Comment
  CHSC46295  Navarretia divaricata subsp. vividior Vernon Oswald 1989-5-16 3773 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  CHSC87539  Navarretia divaricata subsp. vividior R. D. Fischer; Jenny Marr 2004-5-9 135 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Annie Bidwell Trail between Diversion Dam and junction of Bloody Pin Trail. 198 Comment
  CHSC97038  Navarretia divaricata subsp. vividior B. Castro; Plumas NF/Feather River RD botanists 2005-6-6 1483 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  CHSC84029  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 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
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  SEINET10496825  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1590 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC69684  Navarretia intertexta subsp. intertexta Vernon Oswald 1987-6-23 3026 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CDA40127  Navarretia leucocephala T. C. Fuller 1962-5-17 8717 Butte Highway 99E, 12.3 miles northwest of Chico. 0 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
  CHSC10639  Nemophila heterophylla Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  SEINET10969183  Nemophila heterophylla Mary Susan Taylor 1981-4-5 Taylor 3494 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
  UC24189  Nemophila heterophylla Winifred Paine 1902-3-29 Butte Chico Comment
  CHSC88986  Nemophila menziesii Christine Hantelman 2000-2-18 6 Butte 1.5 mi east on Wookey Road. 112 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
  JEPS107354  Nemophila menziesii var. menziesii Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  CHSC50550  Nemophila parviflora var. austiniae Vernon Oswald 1990-7-3 4345 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC103670  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC51048  Nemophila pedunculata Pauleen Broyles 1987-3-24 999 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Comment
  JEPS119738  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG29928  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  CHSC66446  Nicotiana acuminata var. multiflora Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 .1 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 riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CAS-BOT-BC231530  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC10544  Nicotiana glauca Lowell Ahart 1962-4-10 Butte Near Gridley. 36 Comment
  CHSC66447  Nicotiana quadrivalvis Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 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 riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; 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
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  CHSC24943  Odontostomum hartwegii M. L. McCrum 1976-4-21 14 Butte Ca. 4.0 mi ne of Chico, 2.1 mi e on Wildwood Ave., 0.1 mi n. 106 Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  CHSC108854  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CHSC39065  Oemleria cerasiformis R. A. Schlising 1983-4-15 4401 Butte S of village of Cohasset on Cohasset Ridge, near Maple Branch of Mud Creek. 487 Comment
  UCD106936  Oenothera elata subsp. hirsutissima L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  CHSC44286  Orobanche fasciculata V. Oswald; L. Ahart 1988-6-17 3393 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC499846  Orobanche fasciculata Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS123824  Orobanche uniflora var. uniflora Lowell Ahart 2015-4-18 20056 Butte 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. Comment
  CHSC51081  Orthilia secunda Pauleen Broyles 1987-7-19 1077 Butte Ca. 72 km (air) ne of Inskip. at edge of small lake. 526 Comment
  RSA0006075  Orthocarpus bicolor A. A. Heller, H. E. Brown 1902-5-10 5519 Butte Berry Canyon (Near Clear Creek). Comment
  RSA14136  Orthocarpus erianthus Elmer I. Applegate 1927-3-4 4999 Butte 11 miles north of Chico. 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
  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
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  SEINET10840954  Osmorhiza chilensis Mary Susan Taylor 1977-6-25 Taylor 1378 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC31456  Oxalis corniculata L. Ahart 1980-10-27 2689 Butte Near the garden area near our home, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28382  Packera eurycephala var. lewisrosei J. D. Jokerst; M. S. Taylor 1979-10-13 391 Butte Jordan Hill Rd. (Ponderosa Way) 2.8 mi. N. of junction with Concow Cr. 609 Comment
  JEPS34386  Packera eurycephala var. lewisrosei Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8862 Butte 0.75 mi s Pulga (above side road off U.S. Hwy 40, in canyon of the N Fk Feather River, at n base of grade over Jarbo Gap, and just before bridge across Feather River); North Fork of Feather River, Jarbo Gap 426 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
  CHSC86531  Panicum acuminatum var. acuminatum L. P. Janeway; John Hunt 2003-7-1 7862 Butte Northern High Sierra Nevada. Along east edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek 280 Comment
  SEINET10507745  Panicum capillare Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4239 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
  CHSC34020  Panicum rigidulum subsp. rigidulum L. Ahart 1981-7-18 2943 Butte Along the edge of a ditch in the burrow area ca. 5.5 m sw of Oroville. On edge of the ditch on the w side of the burrow area and ca. in the middle. 35 Comment
  CHSC52374  Parentucellia viscosa L. P. Janeway 1989-5-13 3234 Butte NE corner of Durham-Pentz Rd and Lake Hills Dr (pvt) 1.0 mi E of hwy 191. 115 Comment
  JEPS98592  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte 13 air miles SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  UC177006  Parvisedum pumilum Dr. E. B. Copeland 1903-5-2 3019 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  JEPS98522  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CHSC43277  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CHSC42059  Paxistima myrsinites Lowell Ahart 1986-10-16 5402 Butte On the east side of the road, about 1 mile south-west of the Forbestown Diversion Dam, about 4 miles north-east of Forbestown. 548 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  CAS-BOT-BC71203  Pellaea andromedifolia Lillian Mott 1969-4-27 s.n. Butte Table Mt. Comment
  SEINET10529792  Pellaea andromedifolia Mary Susan Taylor 1979-3-20 Taylor 1957 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC28629  Pellaea mucronata M. S. Taylor 1979-3-19 1935 Butte Ca. 1 1/2 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 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
  RSA305807  Penstemon azureus James R. Shevock 1972-5-19 1776 Butte Jacob Pass, Feather River Canyon, Hwy 70. 1067 Comment
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 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 354 Comment
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  RSA592500  Penstemon laetus subsp. leptosepalus S. O. Mattoon 1970-6-12 17 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC62789  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-3 4369 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  NY604509  Penstemon laetus var. leptosepalus A. A. Heller 1914-6-22 11500 Butte Chico Meadows 1219.2 Comment
  UC1303024  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  UC726288  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 mi from Oroville; embankment on Feather Highway Comment
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  CHSC30368  Pentagramma triangularis J. D. Jokerst 1979-2-23 1132 Butte In the upper reaches of Hollow Cr, Top of North Table Mt., W edge. Comment
  CHSC39239  Pentagramma triangularis M. S. Taylor; K. Tharp 1983-3-12 5238 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC101286  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  UC1562390  Perideridia howellii Vernon Oswald and Lowell Ahart 1990-7-31 4420 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow, 1097 Comment
  CHSC40234  Perideridia lemmonii Vernon Oswald 1985-6-15 1836 Butte Black Bart Rd., ca. 1.5 mi se of Lumpkin Rd. 655 Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  UC1389960  Perideridia parishii subsp. latifolia T. I. Chuang, L. Constance, and R. S. Mitchell 1965-9-9 6036 Butte 2.3 mi e Butte Meadow Comment
  CHSC37113  Persicaria hydropiper L. Ahart; M. S. Taylor 1982-10-11 3864 Butte Along edges of large duck pond, ca. 0.1 mi w of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC55244  Persicaria hydropiperoides Lowell Ahart 1991-10-14 6715 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 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
  CAS-BOT-BC418953  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, 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
  CHSC110398  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC419180  Persicaria maculosa Herbert L. Mason; Verne Grant 1946-9-4 13111 Butte 833 Canal, West Gridley Road Comment
  UCD99569  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte 8 miles north of Oroville Comment
  SBBG17322  Petrorhagia dubia M. Vincent 1962-4-17 201 Butte Pentz and Nelson Bar Rds, 5 mi S of Paradise Comment
  SEINET10935989  Phacelia cicutaria Lowell Ahart 1984-4-4 Ahart 4541 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  RSA133614  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-24 341 Butte Feather River Highway about 12 miles northeast of Oroville. 152 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
  POM73566  Phacelia purpusii C. C. Bruce 1898-05 2388 Butte Mountains. Comment
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 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
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  NY61541  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte On the Feather River Highway a mile or two west of Arch Rock Tunnel Comment
  CHSC32604  Phalaris brachystachys J. D. Jokerst 1979-11-11 636 A Butte Goodspeed-Watt Road 0.1 mi N of its jct with Nelson Rd. Area adj to canal. Comment
  CHSC71215  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte Edge of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC203841  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 mi n Oroville Comment
  CAS-BOT-BC259043  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CHSC65996  Phalaris lemmonii Vernon H. Oswald 1996-4-20 7400 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET10660261  Phalaris lemmonii Lowell Ahart 1982-1 Ahart 3431 Butte Normal size. On dry red soil on bottom of vernal pool in farmed fields, Peter Ahart Ranch, Honcut, ca. 2 mi. NE of Honcut. Common in vernal pool. Valley Grassland. 50 Comment
  CHSC6135  Phalaris paradoxa J. Wheeler 1968-4-19 322 Butte Table Mountain, n of ne branch of Beatson Hollow, along edge of temporary pond. 548 Comment
  CHSC75339  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  SEINET10716717  Phalaris paradoxa A. Arthur Heller 1919-8-13 Heller 13352 Butte Rice fields between Nelson and Richvale in moist adobe Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  CHSC23701  Philadelphus lewisii M. S. Taylor 1976-5-5 1113 Butte Abundant along creek ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  UC176134  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte 8 mi n Oroville (ditch along mountain); Table Mountain 182 Comment
  SEINET10970383  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1979-5-4 Taylor 1990 A 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
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  SEINET10934986  Phleum pratense Mary Susan Taylor 1982-6-24 Taylor 4728 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  UC201131  Phlox diffusa unknown 1892-6-28 Butte Jonesville Comment
  JEPS21864  Phlox speciosa subsp. occidentalis Annette Waters 1958-4-19 227 Butte 2.5 mi e Lumpkin Road (on Oroville-Forbestown Road, en route to Oroville) Comment
  SEINET10969533  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1975-5-9 Taylor 569 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  SEINET12230198  Phoradendron juniperinum M. S. Taylor 1976-1 997 Butte 2 mi N of Cohassett, 10 ft. E of Cohasset Hwy 762 Comment
  CHSC33900  Phoradendron libocedri M. S. Taylor 1981-5-15 3739 Butte At loop in rd 23N00.1, serpentine barrens, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  CAS-BOT-BC141244  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte ca. 100 ft E of Pentz-Magalia Hwy., ca. 1 mi S of Kunkle Reservoir, ca. 3 mi S of Paradise 411 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
  CHSC21051  Phoradendron villosum M. S. Taylor 1975-5-9 566 Butte Ca. 1/2 mi n of De Sabla turnoff, ca. 50 ft. e of the Skyway, Magalia. 731 Comment
  CHSC38543  Phoradendron villosum Vernon Oswald 1982-11-13 13 Butte Bidwell Park, Chico. North Rim Trail, ca. 1.5 mi e of the power lines. 365 Comment
  CHSC51083  Phoradendron villosum Pauleen Broyles 1988-2-13 1096 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Parasitic on Quercus lobata near the creek. Comment
  CDA43066  Photinia serratifolia L. P. Janeway 2011-4-2 10236 Butte Sacramento Valley.; Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave. between Madrone Ave. and Crister Ave. Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  SEINET10547000  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 Ahart 6725 Butte On the south end of the dam, at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC76937  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC38240  Pilularia americana Vernon Oswald 1983-5-14 478 Butte Upper Bidwell Park, Chico, 80 ft n of Upper Park Rd. and 50 ft w of the road to the North Rim Trail. 92 Comment
  CHSC46176  Pilularia americana Lowell Ahart 1978-5-15 1720 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC66078  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte E of Chico, NE corner of jct. of Notre Dam Blvd. and the Skyway, 1/8 mi. E of Hwy. 99 69 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  HSC46096  Pinus ponderosa J. P. Smith 1973-3-22 5931 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC25253  Piperia transversa M. S. Taylor 1977-6-26 1388 Butte Ca. 2 mi. e of Cohasset. 762 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  JEPS127089  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CHSC106875  Plagiobothrys austiniae Lowell Ahart 2011-4-28 17329 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40762  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 4886 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC93349  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  JEPS103587  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  UCD72999  Plagiobothrys greenei Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  JEPS108771  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS120653  Plagiobothrys hispidulus Lowell Ahart 2013-10-26 19209 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 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
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  CHSC46761  Plagiobothrys nothofulvus Lowell Ahart 1980-4-7 2072 Butte On the north side of Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  UCR237307  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18754 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  SEINET10497612  Plagiobothrys stipitatus Mary Susan Taylor 1978-4-14 Taylor 1566 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC13522  Plagiobothrys stipitatus var. micranthus S. Poe 1974-4-22 9 Butte Ca. 50 yds. s of Fern Bank area, upper Bidwell Park. 73 Comment
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS105901  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  JEPS127058  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-17 20840 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  SBBG128017  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte W side of the old Humboldt Rd, Disc Golf Area, ca. 150 yards N of the entrance to the Disc Golf Area, ca. 40 yards W of Hwy 32, upper Bidwell Park, ca. 5 mi (air) NE of Chico 395 Comment
  JEPS117202  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  CHSC96378  Planodes 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
  RSA325025  Plantago bigelovii subsp. bigelovii L. Ahart 1984-4-24 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 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
  JEPS98424  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte 5 air mi SW of Oroville (edge of a poor dirt rd, S side of the access rd to boat ramp at the Thermolito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CHSC47458  Plantago elongata Lowell Ahart 1974-3-24 337 Butte Growing on the bottom of vernal pools and wet swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCSC008612  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  UC1506095  Plantago erecta Robert T. Clausen 1963-3-20 63009 Butte s of Chico (low ridge e of Mutual Ditch, Sacramento River drainiage); Sacramento Valley, Sacramento River 57 Comment
  SEINET9784516 Image available Plantago lanceolata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte 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
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CAS-BOT-BC244399  Poa annua Lowell Ahart 1973-2-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC41972  Poa annua Lowell Ahart 1986-11-7 5425 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET10887531  Poa annua Lowell Ahart 1987-5-6 Ahart 5559 Butte On dry sand and silt, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 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
  RSA700238  Poa bolanderi L. Ahart 2004-7-23 11305 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 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." Comment
  UC1562320  Poa cusickii subsp. epilis Vernon Oswald and Lowell Ahart 1990-7-19 4371 Butte ca 3 mi e Philbrook Reservoir (ca 0.8 mi w of Plumas Co line, s side of Philbrook Creek) 1965 Comment
  SEINET10659840  Poa pratensis Lowell Ahart 1987-5-6 Ahart 5560 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe POwer House, about 2 miles south east of Jarbo Gap. 271 Comment
  RSA4414  Poa pringlei E. B. Copeland 1931-6-22 s.n. Butte Jonesville 2000 Comment
  CHSC103982  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 301 Comment
  CHSC41188  Poa sierrae J. D. Jokerst 1984-6-4 2043 Butte Ca 100 meters east of Camp Creek. Canyon of the North Fork Feather River. 975 Comment
  POM62748  Pogogyne douglasii A. A. Heller, H. E. Brown 1902-5-15 5553 Butte Near Biggs. Comment
  CHSC103715  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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
  SEINET12326967  Pogogyne zizyphoroides Unknown 1978-1 18 Butte Collected ca 1/2mi W of Hwy 99 on the N side of Broyles Rd. NW corner of Butte Co., Nord Quadrangle* 61 Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  UC598550  Pogogyne zizyphoroides John Bright 1936-5-6 13043 Butte along highway near Chico Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CDA38778  Polycarpon tetraphyllum var. tetraphyllum L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC4731  Polygala cornuta R. Carter 1966-6-12 425 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd., on bank above road; ca. 17 mi. E of Oroville. Comment
  SEINET10903191  Polygala cornuta Mary Susan Taylor 1978-7-18 Taylor 1692 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  UC203665  Polygala cornuta var. cornuta A. A. Heller 1914-7-24 11624 Butte gravelly slopes near Forest Ranch; ; near Forest Ranch, Butte Co. 731 Comment
  UC455453  Polygala cornuta var. cornuta Miss Kate Conger 1907-1 Butte Brush Creek 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
  CHSC38612  Polygonum aviculare Vernon Oswald 1983-5-31 596 Butte Upper Bidwell Park, Chico, at the Rifle and Trap Range. Gowing in hard, disturbed soil of the parking lot. 103 Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  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
  UCD100080  Polygonum aviculare subsp. depressum John Thomas Howell 1962-6-16 37564 Butte Magalia. 731 Comment
  CAS-BOT-BC109132  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise. Comment
  CAS-BOT-BC109151  Polygonum bolanderi Lowell Ahart 1980-9-10 2616 Butte Little Bald Rock. 1100 Comment
  CHSC102160  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC63714  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  UC392223  Polygonum davisiae E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  NY323773  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  CAS-BOT-BC414716  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir 1859 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
  CHSC39128  Polygonum parryi R. A. Schlising; J. Jokerst, R. Banchero 1980-6-16 3712 Butte 0.1 mi s of jct Humboldt Road and Skyway at Butte Meadows, along Skyway in meadow. Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  UC1509633  Polygonum persicaria L. Ahart 1982-10-6 3845 Butte ca 3 mi ne Hocut; Peter Ahart Ranch, North Honcut Creek 50 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
  UC600497  Polygonum polygaloides subsp. kelloggii H. F. Copeland 1930-7-28 Butte by Humbug Road (edge of pool); Jonesville 1828 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10470877  Polypodium californicum Lowell Ahart 1983-3-28 Ahart 3911 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC30370  Polypodium calirhiza J. D. Jokerst 1979-2-23 1131 Butte In the upper reaches of the S branch of Hollow Cr, Table Mt. Comment
  CHSC30822  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1980-4-18 2513 Butte W side of Humbug Rd, ca 1 mi s of Nimshew. 609 Comment
  CHSC90205  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
  JEPS107675 Image available Polypodium calirhiza Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico 406 Comment
  CAS-BOT-BC232962  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC102416  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC233057  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45744  Polypogon interruptus S. A. Conley 1986-6-16 41 Butte On n. bank of Western Canal, at jct. with the Midway, 0.8 mi. s of Nelson. 35 Comment
  CHSC45745  Polypogon maritimus S. A. Conley 1986-6-23 42 Butte Upper Bidwell Park, Chico. In drainage of Gun Club lake, ca. 150 ft. s. of lake. Comment
  CAS-BOT-BC232577  Polypogon monspeliensis John Thomas Howell 1959-9-20 34618 Butte E outskirts of Oroville 60 Comment
  CHSC75341  Polypogon monspeliensis Lowell Ahart 1999-5-21 8070 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC30720  Polystichum imbricans M. S. Taylor 1980-5-27 2668 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC116291  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte On south side of Forbestown Reservoir, about 400 yards southeasst of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  CHSC86424  Polystichum imbricans subsp. imbricans R. D. Fischer; Paul Maslin 2004-2-7 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  CHSC86425  Polystichum imbricans subsp. imbricans Paul Maslin 2004-1-1 1 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. 381 Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  CHSC66688  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8091 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC11798  Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  CHSC38645  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-11 472 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CHSC48862  Potentilla gracilis var. fastigiata Vernon Oswald 1983-7-6 820 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Meadow. 1325 Comment
  SEINET9791606 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC195483  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte 6 mi nw Chico; Sacramento Valley Comment
  CHSC37530  Proboscidea lutea M. S. Taylor; L. Ahart 1982-10-11 5158 Butte Graylodge Wildlife Refuge, just se of HQ quad, 12 mi sw of Gridley. 19 Comment
  JEPS117525  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CHSC25078  Prunella vulgaris var. lanceolata D. Joley 1968-7-9 Butte In Butte Meadows ca 35 mi ne of Chico. Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC100520  Pseudognaphalium luteoalbum Lowell Ahart 2008-11-4 15399 Butte On the west side of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC116118  Pseudognaphalium luteoalbum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2015-11-14 20636 Butte On the bottom of the outlfow area at the bottom of Lake Francis Dam, Lake Francis, about 1 1/2 miles south of Dobbins. 479 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  CHSC39276  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte Slide area along the dirt road, about 1/4 mile west of Milsap Bar. about 25 miles north-east of Oroville. 500 Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  SEINET10475098  Psilocarphus brevissimus Lowell Ahart 1983-6-6 Ahart 4030 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CAS-BOT-BC72551  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  CAS-BOT-BC72548  Pteridium aquilinum Lowell Ahart 1981-9-15 3163 Butte One and a quarter miles N of the Lost Creek Reservoir 1300 Comment
  CHSC103729  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC115686  Pyrola aphylla Emily Meigs Doe 2015-6-11 30 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.4 mi. NW of Forbestown. Downslope to the north of Forest Service rd. 19N19, approx. 0.65 mi. (air) NE of its intersection with Ponderosa Way. 701 Comment
  CHSC30055  Pyrola aphylla K. R. Stern 1979-6-29 Butte Jas. Moak Property. Parkhill, 1.5 mi S. of Jarhoe Gap. 594 Comment
  CHSC34222  Pyrola aphylla M. S. Taylor 1981-5-29 3812 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur road 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  SEINET178410  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 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
  UC600606  Pyrola picta E. B. Copeland 1929-7-1 Butte Jonesville Comment
  CAS-BOT-BC466306  Pyrola picta A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  CHSC109595  Pyrus communis Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  SBBG19584  Quercus berberidifolia H. F. Copeland 1939-8-8 1575 Butte Humboldt Rd 12 mi E of Chico Comment
  UC1135529  Quercus berberidifolia J. E. Sowder 1933-8-4 123 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  CAS-BOT-BC86634  Quercus douglasii Lowell Ahart 1981-4-24 2781 Butte Peter Ahart Ranch, near Honcut Creek, about 1.5 mi N and 3 mi E of Honcut 50 Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CAS-BOT-BC62796  Quercus garryana var. breweri John Thomas Howell 1962-6-15 37439 Butte Magalia 731 Comment
  CAS-BOT-BC105143  Quercus kelloggii John Thomas Howell 1959-9-20 34700 Butte Feather River Highway 9 mi NE of Oroville Comment
  CAS-BOT-BC61579  Quercus lobata C. Hart Merriam 1919-11-21 s.n. Butte Chico 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
  UC1135809  Quercus vacciniifolia P. L. Johannsen 1936-7-21 961 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  CDA19815  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Table Mtn, Oroville. 359 Comment
  POM98907  Ranunculus aquatilis var. capillaceus C. C. Bruce 1897-04 1892 Butte [No location data on label] Comment
  CAS-BOT-BC379113  Ranunculus aquatilis var. diffusus H. F. Copeland 1920-8-12 119 Butte in creek at Jonesville 1219 Comment
  JEPS98419  Ranunculus bonariensis var. trisepalus Lowell Ahart 2000-6-6 8460 A Butte 5 mi(air)E of;deep depression, bottom of old gold mining pit 200 yds NW of dirt road xing Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  UC600475  Ranunculus flammula E. B. Copeland 1929-7-29 Butte by lily pond near Butte Creek House; Jonesville 1750 Comment
  CHSC46844  Ranunculus flammula var. ovalis Kirsten Tarp 1982-7-16 206 Butte N part of county at Crane Valley; streamside at margin of meadow. 1584 Comment
  CHSC46845  Ranunculus hebecarpus Kirsten Tarp 1982-4-3 100 Butte Near Chico in Upper Bidwell Park. 152 Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  JEPS116083  Ranunculus hebecarpus Lowell Ahart 2009-4-22 15592 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC52794  Ranunculus occidentalis M. S. Taylor 1979-3-31 1963 Butte Lickey Property, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  SD48507  Ranunculus occidentalis E. K. Balls 1957-5-22 22518 Butte Sw. shore, Lake Almanor, w. of Big Meadows Dam 1402 Comment
  CHSC46850  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 259 Butte S part of county, sw of Bangor, on Bangor Park Rd., roadside. 103 Comment
  POM268755  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA4437  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  SD1767  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville, in wet woods 1500 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  SEINET13946284 Image available Rhamnus californica A. A. Heller 1915-1 11881 Butte Canyon of Chico creek 5 miles east of Chico Comment
  SEINET13946326 Image available Rhamnus crocea A. A. Heller 1915-1 11847 Butte 2 miles below Centerville in the Sierra foothills 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
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CAS-BOT-BC170519  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  SFV1603  Ribes bracteosum M. L. Vincent 1962-4-15 184 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  UC478513  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow Jonesville 1800 Comment
  UC600612  Ribes nevadense E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UCSB63912  Ribes nevadense Ahart, Lowell 1997-8-1 Butte on the west side of Little Kimshew Creek; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1432 Comment
  CDA13286  Ribes roezlii G. F. Hrusa, T. D. Wilfred 1996-7-9 13134 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC3607  Ribes roezlii Gerry Carrauthers 1966-3-5 28 Butte E. of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  CAS-BOT-BC198960  Ribes roezlii var. roezlii Jim Riley 1923-3-23 s.n. Butte Forest above De Sabla Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC48903  Ribes viscosissimum var. hallii Vernon Oswald 1987-6-9 2968 Butte Near the headwaters of Scotts John Creek, 3.3. mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CAS-BOT-BC74454  Rorippa curvisiliqua Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC74465  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6451 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC113299  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-4-9 19345 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC38014  Rorippa curvisiliqua var. orientalis M. S. Taylor 1981-5-15 3746 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
  CHSC9136  Rorippa nasturtium-aquaticum Terril Wolt 1970-4-20 28 Butte Streams; ca. 4 mi. N.E. of Skyway, on W. side of Humbug Rd. Comment
  UCD149847  Rorippa palustris BED 1974-6-17 s.n. Butte Gray Lodge Wildlife Area, Field 53. Comment
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
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Feb 25 2009
  JEPS122221  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10483515  Rosa gymnocarpa Mary Susan Taylor 1979-10-5 Taylor 2225 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC38650  Rosa multiflora Vernon Oswald 1983-5-11 464 Butte Upper Bidwell Park, Chico, along the s bank of Chico Creek ca. 1000 ft. e of the footbridge at Five Mile Recreation Area. 83 Comment
  CHSC102409  Rosa pisocarpa subsp. ahartii Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CDA5117  Rotala indica L. Ahart 2000-10-15 8707 Butte Strand of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  UC1191575  Rotala ramosior Herbert L. Mason, Verne Grant 1946-8-15 13048 Butte Butte Sink, Greylodge Game Refuge, #833 Irrigation Ditch, near caretakers house Butte Sink; , Greylodge Game Refuge, #833 Irrigation Ditch Comment
  CHSC45810  Rubus armeniacus L. P. Janeway 1987-5-7 2019 Butte Along Little Chico Cr at the powerlines; near Stilson Cyn Rd 0.8 mi east of Bruce Rd. 88 Comment
  CHSC78265  Rubus armeniacus Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10483578  Rubus laciniatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  CDA34183  Rumex crispus L. Ahart 2010-6-12 16793 Butte On the west side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  SEINET10937567  Rumex crispus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4124 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
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC100897  Rumex salicifolius var. salicifolius R. A. Schlising; Lawrence Janeway 1988-8-2 4655 Butte Northern Butte County, north of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. 1139 Comment
  CAS-BOT-BC434166  Rumex triangulivalvis John Thomas Howell 1962-6-16 37563 Butte Magalia 731 Comment
  CHSC99673  Rupertia hallii R. A. Schlising 2006-8-16 4464 Butte Carpenter Ridge, southwest of Butte Meadows, in scraped roadside of Humboldt Road, 2 miles east of junction Hwy 32. 1380 Comment
  CHSC52012  Sagina saginoides L. P. Janeway 1988-6-16 2814 Butte Along Butte Cr 1.4 mi S of Humboldt Rd via the rd in the W side of the cyn. 1264 Comment
  JEPS22785  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CAS-BOT-BC445663  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  JEPS88387  Sagittaria longiloba Vernon H. Oswald and Lowell Ahart 1996-7-22 8087 Butte on the e side of Tract 7.3, Sanctuary I in a roadside ditch s Refuge Headquarters (U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC43288  Sagittaria sanfordii Lowell Ahart 1987-10-22 5920 Butte In Madrone Lake, near the Oroville-Quincy Highway. 609 Comment
  CHSC80532  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  CHSC9693  Salix exigua var. exigua E. L. Smith 1971-9-12 1065 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC203646  Salix exigua var. hindsiana unknown 11395 Butte near Butte creek on rd. between Durham and Nelson Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CHSC108807  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CAS-BOT-BC125175  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC125179  Salix lasiandra var. lasiandra Javier Penalosa 1962-6-18 2442 Butte Near confluence of French and Peavine Crks. 609 Comment
  JEPS119610  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  RSA28802  Salix lasiolepis A. A. Heller 1914-4-27 11324 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  UC478536  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte in meadows by Butte Creek Jonesville; Butte Creek 1500 Comment
  UC176385  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte w. branch N. Fork Reather R. near Stirling; w. branch N. Fork Reather R. 914 Comment
Read comments
Jul 5 2010
  UCD99300  Salsola ryanii G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley: East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  SEINET12318333  Sambucus caerulea K. D. Johnson 1978-1 8 Butte 5mi S of Pine Creek, 7 mi WNW of Chico 40 Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  CHSC7054  Sambucus mexicana Nancy Wiseman 1969-5-5 Butte Chico State College campus N side of bridge between PSA building and Ed. Psch. Building. 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
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC99582  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9385 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CHSC28642  Sanicula crassicaulis M. S. Taylor 1979-3-31 1971 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC50312  Sanicula graveolens Vernon Oswald; Lowell Ahart 1990-5-29 4260 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1325 Comment
  CHSC60574  Sanicula tracyi Vernon H. Oswald; Lowell Ahart 1993-4-19 5278 Butte Rattlesnake Creek Trail from JordanHill Rd. to Sawmill Pk. Lookout, ENE of Magalia. 701 Comment
  CHSC32662  Sanicula tuberosa M. S. Taylor; L. Hanson 1981-3-16 3414 A Butte 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
  CHSC60647  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Near the top of an old track running through brushy live oak woodland from the bottom of the canyon up onto the grassy top of Table Mtn. 341 Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  CAS-BOT-BC436862  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CDA25432  Saxifraga californica A. C. Browne 1951-3-27 Butte Richardson s Springs. 0 Comment
  UC600619  Saxifraga odontoloma H. F. Copeland 1932-8-19 Butte se of head of Butte Creek; Jonesville, Butte Creek 2100 Comment
  CHSC30003  Scandix pecten-veneris Harritta Gaussoin 1980-4-22 17 Butte SW jct. of Boyles Rd. and Highway 99 N, ca. 13 miles N of Chico. 60 Comment
  CHSC38749  Scandix pecten-veneris Vernon Oswald 1983-5-25 558 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area M (1.2 mi e of the power lines). 146 Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC24812  Schoenoplectus acutus var. occidentalis E. L. Rilla 1976-9-18 27 Butte Freshwater Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CHSC24430  Schoenoplectus mucronatus Lowell Ahart 1976-9-18 Butte Rice fields on the Peter Ahart Ranch, Honcut. 45 Comment
  UCD49963  Schoenoplectus mucronatus Carl M. Wick 1983-6-1 s.n. Butte CA. Butte Co. 2 1/2 mis. n. of the Richvale Hwy, on Erickson Rd. Comment
  CHSC56794  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass. 1889 Comment
  CHSC56795  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-16 3033 Butte Large meadow at 'headwaters' of Willow Creek. 1935 Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  SEINET11750452  Scirpus congdonii L. Ahart, Ahart, P. 1984-1 4754 Butte ca 1.5 mi SE of Bald Mt, 0.25 mi E of Oak Pt., ca 5 mi NE of Stirling City 1750 Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  UC398893 Image available Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville; in bog 1550 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  UC1100919  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house; Butte Sink, Greylodge Game Refuge Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10467401  Scirpus robustus Mary Susan Taylor 1982-5-22 Taylor 4503 Butte T17N R2E nw/ne sec 19. Pennington quad. Graylodge Wildlife Refuge, near parking lot 6 on Rutherford Rd, e of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SD116544  Scirpus tuberosus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Groville and Marysville, stream through Valley Grassland and grainfield. On moist clay. Dry rocky stream bed. 29 Comment
  JEPS115330  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC6093  Scribneria bolanderi A. R. Jaegel 1968-4-10 101 Butte W side of Cherokee Rd. and 1 mi s of Oregon City Rd. Comment
  CHSC61550  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  SFV3445  Scrophularia californica subsp. floribunda M. L. Vincent 1962-4-17 199 Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  RSA425203  Scrophularia californica subsp. floribunda M. Vincent 1962-4-17 199 Butte Pentz Road at Nelson Bar turn off, 5 miles south of Paradise. Comment
  CHSC44401  Scutellaria californica Lowell Ahart 1988-6-29 6110 Butte On bridge on Bean Creek Road, where road crosses Bean Creek, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  SEINET10499137  Scutellaria californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4060 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  SEINET10836980  Scutellaria californica Mary Susan Taylor 1978-7-19 Taylor 1729 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC112466  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC44282  Scutellaria siphocampyloides Vernon H. Oswald; Lowell Ahart 1988-6-17 3390 Butte East of Forbestown Rd. at the e end of Black Bart Rd. 743 Comment
  JEPS115310  Scutellaria tuberosa Lowell Ahart 2009-4-22 15582 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10499232  Scutellaria tuberosa Mary Susan Taylor 1980-5-8 Taylor 2591 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-BC415022  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Chico-Oroville road 6 miles from Chico Comment
  SEINET10973375  Sedum albomarginatum Mary Susan Taylor 1982-5-21 Taylor 4489 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CAS-BOT-BC363285  Senecio aronicoides Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC84749  Senecio eurycephalus var. lewisrosei L. P. Janeway; John Hunt 2003-6-20 7855 Butte Northern Sierra Nevada Foothills. Above northwest edge of West Branch Feather River arm of Lake Oroville, 1015 m north of Lime Saddle. Serpentine. 305 Comment
  CDA38819  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte On the basalt rim, high east edge of Big Chico Creek, about 20 yards west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS122147  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte About 120 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC40490  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC47665  Senecio triangularis Lowell Ahart 1989-9-21 6389 Butte On the west side of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC420  Senecio vulgaris P. Delaplane 1965-3-20 4 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  SEINET10839272  Senecio vulgaris Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4867 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC364726  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia 731 Comment
  CHSC112631  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards southeast of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  JEPS127628  Setaria parviflora B. Castro 2008-7-15 1758 Butte 2 mi W of Hwy 99 and 1 mi SE of Richvale, and NE corner of Cherokee Canal and Richvale Hwy. Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  SEINET10507784  Setaria sphacelata Lowell Ahart 1985-10-12 Ahart 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CDA2456  Setaria viridis L. Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  CHSC105952  Setaria viridis Lowell Ahart 2010-9-24 17237 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  JEPS117629  Setaria viridis Lowell Ahart 2010-9-24 17237 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  CHSC3154  Sherardia arvensis Dona Kingsford 1966-5-21 Butte 0.5 miles SW of 4th street entrance to Bidwell Park, Chico. Comment
  CHSC82397  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET11994747  Sibara virginica Unknown 1985-1 4846 Butte Peter Ahart Ranch, about 1.5 mi N & 1 mi E of Honcut, about 12 mi S of Oroville 50 Comment
  CHSC105800  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  UCD116584  Sidalcea calycosa Arthur W. Dawson 1982-4-18 12 Butte 50 m south of Highway 32, 2.5 km east of U.S. 99. 75 Comment
  CHSC43354  Sidalcea diploscypha Lowell Ahart 1978-5-30 1745 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC220520  Sidalcea diploscypha H. E. Brown May 1-15 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  UC600531  Sidalcea glaucescens E. B. Copeland 1929-7-22 Butte Jonesville 1550 Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90253  Sidalcea hartwegii Eric M. Haney 1989-4-21 8 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  SEINET10480003  Sidalcea hartwegii Mary Susan Taylor 1978-5-7 Taylor 1615 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD14326  Sidalcea hartwegii Bif Sopez 1983-5-15 7 Butte Butte Co., 200 ft. north of Welch-Polermo Road on Highway 70; 91 Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  SEINET7718632  Sidalcea humilis Unknown Butte Mesa Comment
  UC1586602  Sidalcea malviflora subsp. asprella Vernon H. Oswald and Lowell Ahart 1991-5-13 4578 Butte between Canyon Drive and Oroville Dam Blvd East (opposite the spillway) (Dan Beebe Trail in Lake Oroville Recreation Area); Lake Oroville Recreation Area 213 Comment
  UC726097  Sidalcea oregana subsp. spicata A. A. Heller 1928-6-28 14650 Butte Butte Meadows Comment
  CAS-BOT-BC213191  Sidalcea robusta Mrs. J. H. Morrison 1934-5-8 s.n. Butte Durham Comment
  CHSC55508  Sidalcea robusta L. P. Janeway; B. Castro 1991-5-27 3966 Butte Upper Bidwell Park; along North Rim Trail, back side (northwest) of small peak overlooking area between Salmon Hole and Brown's Hole. 365 Comment
  CHSC44927  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  SEINET11931356  Silene californica Unknown 1978-1 18 Butte ca 4 mi SE of Concow reservoir 13.5 mi NE of Oroville. 0.7 mi S on Dark Canyon Rd. E side of road 549 Comment
  CHSC35043  Silene gallica C. W. Dawson 1978-4-21 19 Butte 1.5 mi s of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy. at top of ridge. 335 Comment
  CAS-BOT-BC387068  Silene gallica Lowell Ahart 1988-5-1 5974 Butte North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC387071  Silene gallica Lowell Ahart 1980-5-17 2268 Butte .5 mile SE of Hurleton Comment
  CAS-BOT-BC387074  Silene gallica M. S. Taylor 1982-5-2 4390 Butte N side of Hwy 70, at Pulga bridge, ca. 20 mi NE of Oroville. 487 Comment
  CHSC21275  Silene laciniata subsp. californica M. S. Taylor 1975-4-30 377 Butte Along both sides of Humbug Rd, ca. 19 mi e of Chico. 365 Comment
  CAS-BOT-BC389287  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte About Chico Meadows 1219 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  CHSC39503  Silene lemmonii Lowell Ahart 1993-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC91476  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC389290  Silene lemmonii Lowell Ahart 1983-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls 600 Comment
  CAS-BOT-BC181357  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CHSC34530  Sinapis arvensis R. E. Preston 1982-2-18 167 Butte N side of Keefer Lane ca. 0.4 mi w of Cohasset Hwy; ca. 6 mi n of downtown Chico. In stock pen. 106 Comment
  CAS-BOT-BC74932  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC10688  Sisymbrium officinale Lowell Ahart 1962-4-26 Butte Ahart Ranch, Honcut. 45 Comment
  CHSC33224  Sisymbrium orientale R. E. Preston 1981-6-2 81 Butte At roadside. On s side of Hwy 70 across from power company rest area, ca. 38 km nne of Oroville. 488 Comment
  UC203873  Sisyrinchium A. A. Heller 1914-7-23 11606 Butte Chico Meadows, at base of n slope Chico Meadows; Sierra Nevada 1219 Comment
  UC426901  Sisyrinchium bellum E. B. Copeland 1930-8-3 Butte Jonesville 1500 Comment
  SEINET10507628  Sitanion hystrix Lowell Ahart 1985-6-30 Ahart 5091 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC97325  Smilax californica L. P. Janeway 2007-6-25 9070 Butte Northern High Sierra Nevada. Plumas National Forest; along north bank of French Creek between Bidwell Creek and Jack Creek. 604 Comment
  JEPS95803  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte about 2 miles north and 1/4 mile east of Honcut; Peter Ahart Ranch, Oroville; Peter Ahart Ranch; about 2 miles north and 1/4 mile east of Honcut; about 12 miles south of Oroville 30 Comment
  CHSC1936  Solanum parishii J. Gulick 1929-5-27 Butte Paradise. 548 Comment
  CHSC1940  Solanum parishii V. Holt 1935-4-5 Butte Honey Run grade. 365 Comment
  CHSC2519  Solanum parishii W. Fitzwater 1958-4-12 Butte Humboldt Rd., Chico area. 426 Comment
  NY821111  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock creek Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC31457  Solanum physalifolium var. nitidibaccatum L. Ahart 1980-10-27 2691 Butte In the garden, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  SEINET10872003  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-9-12 Taylor 3330 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC30892  Solidago elongata M. S. Taylor 1980-9-12 3330 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station. 975 Comment
  CHSC30040  Soliva sessilis L. Ahart 1980-5-17 2280 Butte Along the edges of a wash, ca. 1/8 mi s of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near 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
  UC481512  Sorbus scopulina var. cascadensis H. F. Copeland 1924-8-10 886 Butte Jonesville Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 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 a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  CHSC35000  Spergularia rubra R. A. Schlising 1980-7-7 3844 Butte Several miles NE of village of Feather Falls, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. Roadside. 1158 Comment
  JEPS107344  Spergularia rubra Lowell Ahart 2005-4-2 11688 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
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CAS-BOT-BC390596  Spergularia rubra Clarence R. Quick 1963-7-16 63 53 a Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CAS-BOT-BC390600  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10537505  Spergularia rubra Mary Susan Taylor 1980-10-6 Taylor 3360 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CAS-BOT-BC147948  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  UCSB63841  Spiraea douglasii Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC99477  Spiranthes porrifolia Lowell Ahart 2008-6-13 14825 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  CHSC21133  Stachys ajugoides var. rigida M. S. Taylor 1975-8-31 879 Butte On Earnies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC44403  Stachys ajugoides var. rigida Lowell Ahart 1988-6-23 6063 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  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
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  SEINET10537516  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1655 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC10641  Stellaria media Lowell Ahart 1968-3-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119897  Stellaria media Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18112 Butte On the north side of Big Chico Creek, along the horse trail, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CAS-BOT-BC181448  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  UC1562279  Stephanomeria paniculata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC51360  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1990-9-4 4445 Butte Feather Falls Trail on the approach to the overlook. 609 Comment
  SD216  Stipa E. B. Copeland 1929-7-16 335 Butte Jonesville, scattered in low woods 1500 Comment
  OBI22289  Stipa stillmanii Robert F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  CHSC4162  Streptanthus diversifolius R. Carter 1966-4-21 349 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. 274 Comment
  HSC96684  Streptanthus diversifolius L. Ahart 2006-5-3 12555 Butte 0.25 mi. N of the parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 403 Comment
  UCD115989  Streptanthus diversifolius Robert E. Preston 1986-4-29 539 Butte 8 km north of Oroville, on North Table Mountain. 396 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 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
  JEPS108792  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 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 354 Comment
  RSA716323  Streptanthus polygaloides L. P. Janeway 2005-5-29 8414 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km SW of Pulga. 960 Comment
  SEINET10448523  Streptanthus tortuosus Mary Susan Taylor 1976-4-24 Taylor 1071 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC92582  Streptanthus tortuosus var. orbiculatus L. P. Janeway; Matt Brown 2005-5-17 8391 Butte Northern High Sierra Nevada. Plumas National Forest; opening granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  JEPS108580  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of S end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km S of Kimshew Point. 1317 Comment
  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
  SEINET10940278  Styrax officinalis var. fulvescens Mary Susan Taylor 1978-7-21 Taylor 1837 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  CAS-BOT-BC48055  Styrax redivivus John Thomas Howell 1961-9-22 36757 Butte North fork of Feather River, 10 miles from Oroville. Comment
  CHSC46985  Suaeda calceoliformis Vernon Oswald 1989-6-26 3816 Butte West Liberty Rd along north boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Ditches and roadside drainages. 198 Comment
  SEINET10479044  Suaeda torreyana Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5155 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC28511  Symphoricarpos albus var. laevigatus M. S. Taylor; J. D. Jokerst 1979-10-13 2266 Butte On Jordan Hill Rd (Ponderosa Way on some maps) at jct with Griffith Gulch, ca. 7.1 mi N of its jct with Concow Rd, ca. 2 mi SE of Magalia. 701 Comment
  CHSC96798  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 13889 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CAS-BOT-BC234617  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock 1066 Comment
  SD6581  Symphoricarpos mollis Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS115642  Symphyotrichum bracteolatum Lowell Ahart 2009-8-23 16293 Butte On the east bank of Big Chico Creek, west of the meadow and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UC179637  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC97694  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte along the edge of the Oroville Quincy Highway, near the Berry Creek School 518 Comment
  CHSC26454  Symphyotrichum chilense Lowell Ahart 1977-10-15 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC41881  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte Along the east edge of the Oroville Quincy Highway, near the Berry Creek School, about 16 miles northeast of Oroville. 518 Comment
  CHSC43239  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS87141  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se Kunkle Reservoir ((along a deep wash below the high water line of Lake Oroville)); Lake Oroville 243 Comment
  CHSC69672  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3153 Butte Intersection of Bull Creek and Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. 1508 Comment
  CHSC99671  Symphyotrichum spathulatum var. yosemitanum R. A. Schlising 2006-8-16 4465 Butte East of Jonesville and east of Snag Lake, at Summit Lake. In open areas around lake. 1889 Comment