Search Results — 2000 specimen records retrieved (1582 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3900  Abies concolor R. Carter 1966-7-31 498 Butte 17 mi NE of Oroville on W side of Big Bald Rock along E side of Big Bald Rock Rd. 1066 Comment
  CHSC88614  Abies concolor H. Gray 2003-6-3 Butte Plumas National Forest. Parking Lot, Bald Rock Trail. 792 Comment
  CHSC110348  Abutilon theophrasti B. Castro 2006-8-10 1594 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. 31 Comment
  CHSC34968  Abutilon theophrasti R. A. Schlising 1981-9-26 4208 Butte West of Chico along Sacramento Avenue; just west of Mud Creek. 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
  CHSC33590  Acer circinatum M. S. Taylor 1981-5-21 3789 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  CAS-BOT-BC330624  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC2393  Acer macrophyllum R. Carter 1965-3-15 167 Butte Tree found along W side of Oroville-Forbestown Rd. .5 mi. E of intersection of Oroville Forbestown Rd. and Lumpkin Rd., Butte Co. 441 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 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
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC41251  Achillea millefolium S. C. Morey 1983-7-21 471 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC210634  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC93506  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 385 Comment
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SEINET10663560  Achnatherum occidentale Lowell Ahart, Vernon H. Oswald 1999-7-26 Ahart 8123 Butte T18N, R12E, southwest 1/4 Section 34. On a ridge about 75 yards west of Grouse Ridge Road (Road 14) and about 1/2 mile southwest of the Lookout, about 5.5 miles northeast of Bowman Lake Road (Road 18), about 4.5 miels (air) south of Bowman Lake. 2134 Comment
  CAS-BOT-BC216462  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  UC1594559  Achnatherum occidentale subsp. occidentale Lowell Ahart 1992-7-29 6875 Butte 3/4 mi nw Lotts Lake (1 mi ne of the Carr Mine); ; sw1/4 1798 Comment
  JEPS110267  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  CHSC56744  Achyrachaena mollis J. D. Jokerst 1980-3-26 Butte East side of Chico; 100m northeast of junction of Bruce Road and Skyway. Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  SFV3664  Achyrachaena mollis M. L. Vincent 1962-4-15 191 Butte Sierra Nevada Skyway. 4 miles west of Paradise, overlooking Butte Canyon. 215 Comment
  CHSC45909  Acmispon americanus var. americanus Lowell Ahart 1981-8-11 3025 Butte Along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC40282  Acmispon brachycarpus Lowell Ahart 1985-5-31 5038 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC98962  Acmispon brachycarpus Lowell Ahart 2008-5-12 14755 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC50668  Acmispon glaber Lowell Ahart 1990-5-21 6474 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC97361  Acmispon parviflorus Paul Maslin 2005-5-1 59 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609754E 4410046N. 243 Comment
  UC1564734  Aconitum columbianum V. Oswald and L. Ahart 1989-7-21 3878 Butte ca. 4.5 mi. (air) s.e. Jonesville (ca. 0.8 mi. (air) s.e. of Summit Lake); middle branch upper Butte Creek 1828 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC11919  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit'. 2100 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 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
  CAS-BOT-BC418781  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1524 Comment
  CAS-BOT-BC29923  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CHSC101750  Adiantum jordanii Lowell Ahart 2009-5-23 15742 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC90135  Adiantum jordanii Greg Johansen 1983-4-16 1 Butte About 200 yds south of Butte Creek and 200 yds southeast of the Covered Bridge, 6 mi east-southeast of Chico. 274 Comment
  SEINET11716733  Adiantum jordanii B. K. Madsen 1970-1 22 Butte S side of Chico Canyon Rd, ca 300 yards S of Municipal Golf Course bdg across Big Chico Creek, Chico Comment
  CHSC98333  Aegilops triuncialis L. P. Janeway; B. Castro 2007-5-19 8978 Butte Cascade Range Foothills. Bottom of un-named drainage on southesast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. On the lowest terrace above the dry dreek; dry hard clay soil, Tuscan Mudflow outcrops (volcanic) above. 88 Comment
  CHSC50812  Agoseris glauca var. monticola Vernon Oswald 1990-7-23 4383 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  SEINET10475107  Agoseris heterophylla Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4866 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  UC1562421  Agoseris heterophylla var. heterophylla Lowell Ahart 1990-6-16 6509 Butte Just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CHSC29301  Agoseris retrorsa J. D. Prouty 1980-4-17 80 .69 Butte E of Yankee Hill Road. 518 Comment
  JEPS119956  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 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
  SACT000147  Agrostis rossiae Herbert Copeland 1934-7-9 Butte Comment
  CHSC69733  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  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
  UCSB63780  Agrostis stolonifera Ahart, Lowell 1998-7-18 Butte SW of lone oak tree, W of cow chute on W side of Cherokee Rd; North Table Mtn, about 7 mi N of Oroville by air 403 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  CHSC118445  Aira caryophyllea L. P. Janeway 2016-5-9 11952 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Pondosa Way and Road 19N19. 701 Comment
  HSC39885  Aira caryophyllea J. P. Smith 1973-3-22 5925 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD18732  Aira caryophyllea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 25 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  CDA14089  Allium amplectens G. F. Hrusa, T. D. Wilfred 1997-7-3 13974 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC2057  Allium amplectens N. Maxwell 1929-4-20 Butte Paradise. 487 Comment
  CHSC32373  Allium amplectens J. D. Jokerst 1979-5-2 1226 Butte Top of North Table Mt. Along Cherokee Rd at the E edge of the mountain. 396 Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte Near Clear Creek Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  HSC84080  Allium amplectens Dale McNeal 1982-4-13 2608 Butte Beside Chico-Paradise Rd., 7.7 mi. W of junction of Hwy. 191 in Paradise Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  CHSC37431  Allium membranaceum R. A. Schlising; J. Jokerst, L. Ahart 1982-5-8 4241 Butte SE part of county, NE of Forbestown, SW of Forbestown Diversion Dam. Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  CHSC101188  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2009-4-18 9730 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 758 Comment
  CHSC42482  Allium platycaule Lowell Ahart 1987-5-22 5675 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC49479  Allium sanbornii var. sanbornii Vernon Oswald 1987-7-29 3157 Butte Humboldt Rd. 0.6 mi e of Lomo. 1219 Comment
  JEPS104414  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the n side of Ponderosa Reservoir, ca 1 1/2 mi (air) e of the Ponderosa Dam. 331 Comment
  SEINET10496942  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CAS-BOT-BC138035  Alopecurus carolinianus Lowell Ahart 1982-5-10 3430 Butte Sierra Nevada. On the floor of Ahart rice field, Peter Ahart Ranch, 2.25 miles north and 0.25 mile east of Honcut. 50 Comment
  CHSC98807  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 217 Comment
  CHSC29717  Alopecurus saccatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 427 Butte Top of North Table Mt, ca 1.0 mi n of jct of e edge of Mt and Cherokee Rd. 381 Comment
  CHSC8197  Alopecurus saccatus Dave Isle 1969-4-18 373 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500 + yards W. of road on Table Mtn.) 289 Comment
  CHSC6637  Amaranthus M. MacArthur 1968-6-16 339 Butte NE end of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC38256  Amaranthus albus Vernon Oswald 1983-6-29 791 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. 91 Comment
  RSA726362  Amaranthus albus L. Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  CHSC21135  Amaranthus blitoides M. S. Taylor 1975-10-3 932 Butte On roadsides at bridge over Little Chico Creek on River Rd., ca. 10 mi w of Chico. 36 Comment
  SEINET10478811  Amaranthus blitoides Mary Susan Taylor 1975-10-3 Taylor 932 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CDA42944  Amaranthus deflexus L. Ahart 2012-10-2 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC36553  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Graylodge Wildlife Refuge Area, ca. 12 mi sw of Gridley. Near a small building in the parking area at the checking station. 35 Comment
  JEPS106013  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  CHSC76410  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte West side of a large pond, large disturbed area along the east side of the Sacramento River, nnorthwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  CHSC30019  Amelanchier pallida L. Ahart 1980-5-19 2315 Butte South Fork of the Feather River. Ca. 1/9 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. Near bridge. 800 Comment
  POM220123  Amelanchier pallida H. F. Copeland 1928-8-18 459 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CHSC28645  Ammannia coccinea M. S. Taylor 1978-9-8 1889 Butte Along flood control slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  CHSC75967  Ammannia coccinea Lowell Ahart; Vernon H. Oswald 1999-8-13 8167 Butte Along east side of the Sacramento River, northwest of Parrott Landing, about1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD102884  Ammannia robusta E. M. Johnston 1915-8-1 77 J Butte Biggs. Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  UC726941  Amsinckia A. A. Heller 1941-4-19 16068 Butte n side of Sandy Gulch (Richardson Springs Road; at places about Chico); Chico Comment
  JEPS87512  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 4 km e of Chico (23 m w of Humbolt Rd, .8 km n of Little Chico Creek, ne corner of nw corner of Sect. 29) 99 Comment
  UC1530703  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) 100 Comment
  CHSC137  Amsinckia intermedia E. Lusk 1949-5-22 Butte 3 mi. N.W. of Chico. 60 Comment
  CHSC3627  Amsinckia intermedia John Francis 1966-2-28 45 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  SEINET12290588  Amsinckia intermedia K. D. Johnson 1978-1 5 Butte edge of pasture on S side of Cohasset Road, 3.2 mi N of Chico 59 Comment
  RSA0090927  Amsinckia intermedia var. eastwoodiae C. C. Bruce 1897-05 1926 Butte [No locality information provided] Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  UC727048  Amsinckia lycopsoides A. A. Heller 1941-4-19 16067 Butte n side of Sandy Gulch, Lindo Channel (along roadside edge of a field on the road to Bidwell Park) Comment
  CDA34144  Anagallis arvensis L. Ahart 2009-4-22 15593 Butte West side of Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC117436  Anagallis arvensis Lowell Ahart 2016-5-30 20900 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  UC463031  Anagallis arvensis E. B. Copeland 1931-7-20 Butte Albertine 1700 Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  RSA416592  Anaphalis margaritacea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  JEPS83781  Anemone occidentalis V. Oswald and L. Ahart 1988-7-29 3644 Butte ca. 5 mi. (air) s.w. Jonesville (on ridge running e. from peak of Snow Mt., n. brow of ridge) 2103 Comment
  CHSC6649  Anthemis M. MacArthur 1968-6-22 271 Butte Ca. 30 ft. SE of Big Chico Creek, and ca. 50 ft. NE of Greenhouse, Chico State College. 60 Comment
  JEPS122257  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  JEPS122292  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  RSA716512  Aphanes occidentalis L. Ahart 2005-3-17 11660 Butte 50 yards S of the fence, on the E side of very poor dirt road, 1/8 mile NW of Indian Cave, 3/4 mile W of Big Chico Creek, about 4.5 miles (air) NE of Chico Comment
  CHSC12929  Aphyllon purpureum K. D. Cox 1974-4-5 186 Butte On banks of Lake Oroville, Lunt Ranch on Lunt Rd., off Hwy 70, N of Oroville. Comment
  CHSC24677  Aphyllon purpureum C. E. Stopher 1976-4-15 22 Butte 1.6 km nw of Forest Ranch. 579 Comment
  CHSC83895  Aphyllon purpureum Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC46183  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 232 Butte Near Pulga. 731 Comment
  CHSC52682  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-5 326 Butte Ca. 1.0 mi SW of Jonesville at Colby Creek. 1487 Comment
  CHSC52689  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 365 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1682 Comment
  CHSC114947  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville about 1/4 mile north of Miners Ranch Reservior, about 4 miles East of Oroville. 218 Comment
  UC1594658  Arabidopsis thaliana Vernon H. Oswald and Lowell Ahart 1992-4-8 4896 Butte Trail near abandoned railroad grade in Oroville Dam Recreation Area, on s side of Thermalito Diversion Pool, between spillway and Sycamore Hill Oroville Dam Recreation Area; , Thermalito Diversion Pool 76 Comment
  CAS-BOT-BC167244  Aralia californica Lowell Ahart 1985-7-9 5106 Butte Along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of the Forbestown 548 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET6630800  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  JEPS82738  Arceuthobium campylopodum Wayne Roderick 1983-7-23 Butte near old rr station Magalia Comment
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  NY8241  Arctostaphylos A. A. Heller 1928-2-22 14476 Butte About 2 mi below Forest Ranch , lower limit of the Transition Life Zone. In red clay. Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  UC726979  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte Pentz-Magalia Rd 4 mi below Paradise Comment
  SEINET10914129 Image available Arctostaphylos mewukka A. Arthur Heller 1940-2-6 Heller 15493 Butte On the Wagstaff Road near the junction with the Neal Road, Paradise Transition Life Zone. Comment
  CAS-BOT-BC38575  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15502 Butte On the Neal Rd. w. of Optimo Lodge, Paradise. Comment
  CAS-BOT-BC45566  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge e. of the Summit. 2100 Comment
  CAS-BOT-BC45572  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC45573  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  SEINET10973498  Arctostaphylos patula Mary Susan Taylor 1980-5-8 Taylor 2602 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
  SD108266  Arctostaphylos truei Walter Knight, Irja Knight 1981-5-25 4109 Butte 27 miles north of Chico; State Highway 32. 1064 Comment
  UCD51938  Arctostaphylos truei John Thomas Howell 1975-6-15 51100 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte Co. 396 Comment
  SEINET11989215  Arctostaphylos truei J. T. Howell 1975-1 51083 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET10449337  Arctostaphylos viscida Lowell Ahart 1985-2-17 Ahart 4841 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC48252  Arctostaphylos viscida subsp. viscida Carl B. Wolf 1937-3-29 8339 Butte Sierra Nevada Foothills, 3 1/2 mi. below Magalia on Oroville Road. 487 Comment
  CAS-BOT-BC48253  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico. Comment
  CAS-BOT-BC48280  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight 1968-3-7 2277 Butte 1/4 mi. down Pentz Road from Hwy 70 Comment
  CAS-BOT-BC48300  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. Comment
  JEPS118321  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 47 Comment
  CAS-BOT-BC400428  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte In the canyon of Big Chico Creek east of Chico 68 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC3510  Aristolochia californica M. Gregg 1966-2-28 21 Butte Upper Bidwell Park at Salmon Hole. Comment
  SEINET10475904  Aristolochia californica Mary Susan Taylor 1981-3-24 Taylor 3442 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
  SEINET12089667  Aristolochia californica E. B. Ferry 1977-1 1 Butte 2.2 km ESE of Chico, 0.3 km N of State Hwy 32, near south bank of Chico Creek 100 Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  POM195762  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CAS-BOT-BC85144  Arnica nevadensis Clarence R. Quick 1953-7-1 53 -31 Butte Sierra Nevada - Big Bar Mt. ridge east of Pulga Comment
  RSA769901  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte 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
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  UCD121285  Asclepias cordifolia M. Vincent 1963-6-8 405 Butte Honey Run Road. Comment
  CHSC20541  Asclepias eriocarpa M. S. Taylor 1975-6-30 810 Butte Fields on e side of Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte 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
  CHSC38245  Aspidotis californica Vernon Oswald 1982-7-23 32 Butte Bidwell Park, Chico, along Yahi Trail w of Brown's Hole. 182 Comment
  CHSC23657  Aspidotis densa M. S. Taylor 1976-4-24 1075 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
  RSA726560  Aster chilensis var. chilensis L. Ahart 2007-10-30 14507 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  RSA724874  Aster eatonii L. Ahart 2006-9-9 13246 Butte About 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows. 1561 Comment
  SEINET10473623  Aster exilis Mary Susan Taylor 1982-10-11 Taylor 5164 A Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  POM174356  Athyrium americanum H. F. Copeland 1928-8-18 1017 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC34150  Athyrium filix-femina var. cyclosorum L. Ahart 1981-9-15 3153 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC36961  Athyrium filix-femina var. cyclosorum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi ne of Stirling City. 1463 Comment
  UC474218  Athyrium filix-femina var. cyclosorum H. F. Copeland 1928-8-18 1017 Butte neighborhood of Jonesville (woods near Butte Creek) 1600 Comment
  CHSC43812  Athysanus pusillus Lowell Ahart 1978-4-19 1649 Butte Along the trail to Feather Falls, about 3 miles north of the town of Feather Falls. 548 Comment
  UC1586520  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte about 10 mi sw Gridley (s side Rutherford Road, about 1/8 mi w of Pennington Road, s of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 mi sw of Gridley); Gray Lodge Waterfowl Management Area, sw of Gridley 30 Comment
  CHSC34049  Atriplex rosea L. Ahart 1981-7-26 3006 Butte On the sides of a large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC34125  Atriplex serenana L. Ahart 1981-9-10 3145 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  UC1490564  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte about 12 mi sw Gridley (just w of Pennington Road, n side of road near the entrance to the Gray Lodge Waterfowl Management Headquarters); Gray Lodge Waterfowl Management, sw of Gridley 35 Comment
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  JEPS116047  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  SEINET11689137  Avena barbata Unknown 1980-1 s.n. Butte 0.5 mi N of the airport turn-off on Cohasset rd, N of Chico city limits 76 Comment
  CAS-BOT-BC98182  Baccharis salicifolia John Thomas Howell 1974-9-19 50883 Butte Feather River Highway bridge at West Branch Feather River - Sierra Nevada 304 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  UCD129525  Balsamorhiza deltoidea W. R. Powell 1968-5-17 1515 Butte 3.5 miles east-northeast of Lake Wyandotte and 3 miles north of Rackberby. 466 Comment
  UC172377  Balsamorhiza sagittata unknown Butte Jonesville Comment
  JEPS98707  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. Comment
  CHSC43272  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte On sand and gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 Comment
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC23409  Blennosperma nanum M. S. Taylor 1976-3-6 1018 Butte On top of Table Mountain, ca. 50 yds W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  SEINET10453129  Boisduvalia densiflora Mary Susan Taylor 1975-6-30 Taylor 817 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET3356337 Image available Boisduvalia sparsiflora A. A. Heller 1914-7-24 11621 Butte Butte Meadows 1219 Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  RSA166314  Boisduvalia stricta D. M. Moore 1960-6-2 93 Butte Road to Richvale, 3.3 mi. W of junction with U.S. 40A at Oroville Comment
  SEINET10644683  Bolboschoenus glaucus Mary Susan Taylor 1982-5-22 Taylor 4503 Butte T17N R2E nw 1/4 ne 1/4 sec 19. Pennington quad. Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi. sw of Gridley. With Lythrum hyssopifolia, Tribulua terrestris. 21 Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CAS-BOT-BC145683  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 southeast of Jarbo Gap. 304 Comment
  CHSC38060  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC42062  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC106323  Brickellia californica John Thomas Howell 1961-9-22 36744 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  HSC102688  Briza maxima J. P. Smith 2013-5-5 13702 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CAS-BOT-BC145537  Briza minor Lowell Ahart 1980-5-17 2279 Butte 0.5 mile southeast of Hurleton. 600 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
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  SEINET10901185  Briza minor A. Arthur Heller 1914-4-14 Heller 11289 Butte Hills 8 miles north of Oroville. Comment
  JEPS93839  Brodiaea minor Lowell Ahart 1998-7-1 8026 Butte about 7 air mi n of Oroville (about 5/8 mi n of the cow chute along Cherokee Road, about 100 yards s of a east west fence, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC203644  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte about 5 mi sw Pentz Comment
  HSC38110  Brodiaea minor Thomas W. Nelson, Jane P. Nelson 1976-5-9 2444 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET3885151  Brodiaea multiflora D. W. McNeal, Todd McIntyre 1989-4-18 3368 Butte Along the rd. bank beside Hwy. #70. 4.5 mi. s. of the jct. of Hwy #162 in Oroville.; 0 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  JEPS93813  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte about 1 1/2 mi n and 2 3/4 mi e of Honcut (on the se side of North Honcut Creek, Peter Ahart Ranch, about 12 mi se of Oroville); North Honcut Creek, Peter Ahart Ranch 54 Comment
  CAS-BOT-BC486479  Brodiaea sierrae John Thomas Howell 1962-6-15 37527 Butte Magalia 731 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 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
  CHSC82470  Bromus carinatus var. carinatus Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9736 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC87811  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  SEINET10662688  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 Ahart 10989 Butte T19N, R6E, southeast 1/4 Section 18. On the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  CAS-BOT-BC148835  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  UCD58345  Bromus catharticus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  SEINET11689143  Bromus catharticus J. M. Lund 1980-1 s.n. Butte S side of Nord Ave., 0.3 mi W of 1st St., beside an apt. complex, Chico Comment
  JEPS110453  Bromus ciliatus Lowell Ahart 2006-7-16 12975 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
  JEPS88260  Bromus commutatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7660 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CAS-BOT-BC156030  Bromus diandrus Peter H. Raven 1953-5-9 5430 Butte 8 miles from Bangor on Oroville Road. Comment
  HSC97191  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley, N of Spruce St., S of railroad bridge. 28 Comment
  CAS-BOT-BC155462  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC116499  Bromus japonicus Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20198 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
  JEPS106201  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  UCD58983  Bromus madritensis Collector unknown 1951-1 Butte Cherokee. 9.5 miles (in direct line) north of Oroville. 373 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC6671  Bromus madritensis subsp. rubens Marilyn Lee 1968-3-15 110 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  CAS-BOT-BC162205  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On west side of Highway 32 on edge of forest. Ca. 0.25 mile north of Forest Ranch. 718 Comment
  POM112249  Bromus orcuttianus Marcus E. Jones 1897-7-9 s.n. Butte On Road from Prattville to Chico. near lehico [? handwriting difficult to decipher...] 915 Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  NY664734  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather river near Stirling Comment
  UC1609481  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  CHSC59041  Calamagrostis canadensis Lowell Ahart 1992-7-26 6848 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC101090  Calandrinia ciliata Lowell Ahart; John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  SEINET10572678  Calandrinia ciliata var. menziesii Mary Susan Taylor 1973-1 Taylor 40 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC29268  Callitriche heterophylla var. bolanderi R. A. Schlising 1980-4-2 3540 Butte Richvale vernal pools, 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC47394  Callitriche trochlearis Lowell Ahart 1974-4-7 347 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  CHSC24842  Calochortus albus T. L. Reynolds 1976-4-23 58 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. 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
  UC600459  Calochortus leichtlinii H. F. Copeland 1932-7-24 Butte sw of Butte Creek Meadows; Jonesville 1800 Comment
  RSA4215  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC491849  Calochortus luteus David D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor Comment
  CHSC90226  Calochortus monophyllus Eric M. Haney 1989-4-23 18 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  UC565381  Calochortus monophyllus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  UC725526  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte about 2 mi w Paradise (on the Clark Road) Comment
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  CHSC26662  Calycadenia fremontii Howard Wurlitzer; M. Hayes, K. Stern, R. Schlising 1968-5-20 89 Butte 1/10 mi N of 'Dead Man's Waterhole', Vina Plains, along N bank of Pine Creek. 57 Comment
  RSA789311  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca 10 mi NW of Chico and ca. 1/2 mile S of Broyles Rd fairly extensive pop. 61 Comment
  UCD129685  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mile west of eastern boundary of Upper Bidwell Park, southeast of Chico. Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  SD122584  Calycadenia multiglandulosa Lowell Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 miles east of Oak Grove Cemetary. 500 Comment
  SFV10354  Calycadenia multiglandulosa M. L. Vincent 1963-6-6 374 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  UCD129713  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte along Hurleton Swedes Flat Road, 1.5 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  JEPS107874  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  UC727113  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte e of, Jarboo Pass on the Feather River Highway Oroville 609 Comment
  UC1119094  Calycadenia spicata C. G. Albertus 1935-6-15 29 Butte 2 mi w of Themalte; Chico 45 Comment
  UC1876648  Calycadenia spicata G. D. Carr 1971-5-23 552 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  CAS-BOT-BC275382  Calycadenia truncata var. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC90919  Calycanthus occidentalis Lowell Ahart 1983-6-26 4104 Butte About 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way. 500 Comment
  HSC96983  Calycanthus occidentalis L. Ahart 2006-6-9 12662 Butte W side of Bardees Bar Rd., 1/8 mi. W of the bridge across the N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  CHSC113477  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  UC600489  Calyptridium umbellatum H. F. Copeland 1931-6-11 Butte Jonesville, Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows 1828 Comment
  SEINET10496585  Calystegia occidentalis Mary Susan Taylor 1980-5-15 Taylor 2639 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC27311  Calystegia occidentalis subsp. occidentalis t. B. Devine 1976-7-31 344 Butte Beside Humbug Road ca 2 mi S of Nimshaw. 548 Comment
  CAS-BOT-BC496959  Camassia leichtlinii subsp. suksdorfii H. F. Copeland 1930-7-11 56 Butte Scotch John meadows 1828 Comment
  CHSC46229  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1064 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  UC145404  Camelina microcarpa Guill Bros. 1902-1-1 Butte Chico Comment
  RSA37526  Camissonia tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Highway 97, Butte Creek 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
  CHSC62539  Campanula scouleri B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 156 Butte Wet meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC113310  Capsella bursa-pastoris Lowell Ahart 2014-4-16 19360 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CAS-BOT-BC37266  Cardamine breweri Lowell Ahart 1977-5-18 s.n. Butte Sutter Buttes Region. Near Golden Trout Crossing, South Fork of the Feather River. 700 Comment
  CHSC10623  Cardamine oligosperma Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC10645  Cardamine oligosperma Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28904  Cardamine oligosperma M. S. Taylor 1980-3-1 2341 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  JEPS87504  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  SEINET10448556  Cardamine oligosperma Mary Susan Taylor 1980-3-28 Taylor 2406 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CAS-BOT-BC38057  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC32739  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-4-14 3534 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 914 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  POM95602  Cardamine pensylvanica C. C. Bruce 1897-05 2064 Butte Little Chico Comment
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  CHSC77165  Carex G. F. Hrusa; T. D. Wilfred 1997-5-7 13737 Butte In riparian zone of Little Butte Creek above Magalia Reservoir, N of Magalia, immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 720 Comment
  CHSC92355  Carex abrupta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10504 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS 84) 1551 Comment
  JEPS122146  Carex abrupta Lowell Ahart 2014-8-13 19707 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC53713  Carex angustata L. P. Janeway 1987-6-27 2346 Butte Meadow just east of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CAS-BOT-BC18055  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. Comment
  UCD140139  Carex athrostachya Robert E. Preston 1982-7-16 340 Butte Crane Valley. 1584 Comment
  CHSC109622  Carex barbarae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC25460  Carex barbarae Hayes; Warner 1977-9-12 104 Butte Along the middle branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CHSC46857  Carex bolanderi R. A. Schlising; P. Broyles 1988-7-3 4564 Butte SE of Stirling City, past '5 corners' at small stream. Comment
  JEPS116085  Carex bolanderi Lowell Ahart 2009-5-30 15790 Butte Along a small stream about 20 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
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  UCD169098  Carex feta Ramona Robison 2013-4-16 11 Butte Clay Pit State Vehicular Recreation Area, located next to a riding trail and under a willow tree. 40 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  HSC87238  Carex fracta L. P. Janeway 1988-6-16 2811 Butte Along Butte Creek, 1.4 mi. S of Humboldt Rd. via the road in the W side of the canyon 1265 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  SEINET7561550 Image available Carex hirtissima L. P. Janeway, Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Oroville Dam quad. Northern Sierra Nevada Foothills, near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. 280 Comment
  CHSC52266  Carex infirminervia L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3142 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC45049  Carex integra Vernon Oswald 1987-5-28 2941 Butte Concow Rd. at Rag Dump. Grassy flat near Fall Creek. 1170 Comment
  CHSC46462  Carex integra V. Oswald; L. Ahart 1989-6-27 3831 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC94260  Carex integra Lowell Ahart 2006-7-16 12990 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10709999  Carex integra A. Arthur Heller 1928-6-16 Heller 14613 Butte Damp, grassy places in the Yellow Pine Forest at Butte Meadows. Comment
  RSA725282  Carex jonesii L. Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  SEINET4110849  Carex laeviculmis D. W. Taylor 2006-1 19610 Butte Keyser Creek; West Branch Feather River watershed. 1524 Comment
  UCD77464  Carex laeviculmis Robert E. Preston 2003-7-17 2161 a Butte Ca. 1 mi SW of Butte Meadows, on N side of The Skyway. 1437 Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  UC532224  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville 1524 Comment
  SEINET10710070  Carex lemmonii Edwin B. Copel 1929-7-5 Copeland s.n. Butte Jonesville, In sunny bog. 1500 Comment
  CHSC44035  Carex limosa S. C. Morey 1983-7-23 577 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC41352  Carex multicaulis R. A. Schlising; Nancy Prouty 1981-3-14 4000 Butte N of Oroville and N of Jarbo Gap along Hwy 70. Comment
  JEPS116089  Carex multicaulis Lowell Ahart 2009-5-15 15709 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
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 Comment
  CHSC52257  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2508 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC45042  Carex nudata Vernon Oswald 1984-4-8 1118 Butte Upper Bidwell Park, Chico, in Chico Creek between Parking Area R and Brown's Hole. 170 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC44951  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Cr and the jct of Lunt and Nelson Bar Roads. 457 Comment
  CHSC47136  Carex praegracilis L. P. Janeway; Vern H. Oswald 1989-4-17 3222 Butte Along E side of Butte Cr 2.4 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  JEPS115981  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC48559  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-22 3064 Butte Upper canyon of Philbrook Cr 0.7 mi W of the pass. Near creeklet in ravine just above road. 1905 Comment
  CHSC45070  Carex simulata Vernon Oswald 1983-6-22 739 Butte South of road leading into Soda Springs Campground from Hwy 32, ca. 4 mi nne of Lomo. 1112 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC52876  Carex subfusca L. P. Janeway 1987-5-28 2106 Butte Spring at the Soapstone Mine; near 4-Trees Rd 1.0 mi W of the Oroville-Quincy Hwy. 1493 Comment
  UC1108993  Carex subfusca H. F. Copeland 1932-7-14 Butte vicinity Jonesville; Lassen National Forest Comment
  JEPS117693  Carex vernacula Lowell Ahart 2010-9-28 17264 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 (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC65489  Carex vesicaria var. vesicaria L. P. Janeway 1995-8-5 4889 Butte North side of Humbug Summit Rd about 1.2 mi northeast of Snag Lake. 1801 Comment
  HSC93554  Carex xerophila G. Fred Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Corner of Skyway Rd. and road to Paradise Lake at N boundary of Magalia 580 Comment
  SEINET10785807  Carex xerophila John Thomas Howell 1967-6-22 Howell 42605 Butte Magalia. On serpentine. 701 Comment
  CHSC46408  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  UC580770  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi se Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10549333  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-7-19 Taylor 1776 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  JEPS123987  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte About 1 1/2 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC444430  Castilleja rubicundula subsp. lithospermoides A. A. Heller 1914-5-8 Butte Clear Creek; ; Clear Creek, Butte Co. Comment
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  CHSC37450  Caulanthus lasiophyllus L. Ahart 1982-5-29 3445 Butte Peter Ahart Ranch, ca. 1.5 mi n and 2 1/4 mi e of Honcut. 50 Comment
  CHSC3150  Ceanothus cuneatus 1966-4-23 Butte 4 miles E. of highway to Quincy on Pentz Road. Comment
  RSA85961  Ceanothus cuneatus C. C. Bruce 1897-1 1816 Butte Little Chico Comment
  JEPS115256  Ceanothus cuneatus var. cuneatus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15486 Butte On a ridge about 300 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 354 Comment
  CHSC101156  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A 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
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west 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
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  RSA25680  Ceanothus integerrimus var. puberulus Carl B. Wolf 1941-7-23 11050 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  UC175603  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte near Stirling 1074 Comment
  UC203659  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte near Forest Ranch; w slope of the Sierra 731 Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC3578  Ceanothus prostratus Judy Lee Potter 1966-2-26 Butte 5 miles north Paradise (Magalia area). Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  UCR133599  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  SD2943  Ceanothus velutinus E. B. Copeland 1930-6-29 Butte Jonesville 1550 Comment
  CHSC3015  Cedrus deodara Carl Pejsa 1958-4-19 137 Butte Bidwell Park Forestry Station. Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  JEPS115574  Centaurea melitensis Lowell Ahart 2009-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, 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 381 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
  RSA755414  Centaurea solstitialis L. Ahart 2009-6-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  RSA302608  Centaurea solstitialis J. R. Shevock 1972-5-19 1763 Butte North of Oroville 61 Comment
  UCD130088  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte Chico. 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
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville 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
  CAS-BOT-BC288528  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte Hills near Big Chico Creek, E of Chico Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC61523  Cephalanthera austiniae Lowell Ahart 1993-6-16 6963 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  CAS-BOT-BC222895  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  JEPS119723  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SD149106  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Edge of the North Fork of the Feather River, near the Poe Power House, ca. 2 mi. SE of Jarbo Gap 890 Comment
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Jan 9 2013
  CHSC111148  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC118501  Cerastium glomeratum L. P. Janeway 2016-5-9 11954 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  RSA31118  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  CHSC87207  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 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
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  RSA516507  Chamaesyce hooveri R. D. Stone, R. E. Buck 1987-8-4 832 Butte Vina Plains, straddling fenceline, 0.4 miles WSW of the intersection of Hwy 99 and Cana Hwy. 56 Comment
  CHSC38439  Chamaesyce maculata Vernon Oswald 1983-6-27 768 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  CHSC44389  Chamaesyce maculata Lowell Ahart 1988-7-3 6120 Butte Along the edge of the dirt road, about 1/10 mile north of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CHSC61314  Chamaesyce maculata Lowell Ahart 1993-7-22 7080 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC47676  Chamaesyce nutans Lowell Ahart 1989-9-17 6388 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  JEPS105939  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CDA34638  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-3 15955 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. Comment
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC32831  Cheilanthes cooperae W. Michael Foster 1981-4-22 8 Butte Adjacent to s shore of Oroville Reservoir, ca. 1 mi w of Hwy 70 and ca. 6 mi se of Paradise. 289 Comment
  CAS-BOT-BC69445  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC37406  Cheilanthes gracillima R. A. Schlising 1982-5-19 4245 Butte Lumpkin Ridge, e of village of Feather Falls, along Lumpkin-La Porte Road. 1280 Comment
  RSA712759  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada, 0.2 kilometers of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  SEINET10470378  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4981 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  UCD97743  Chenopodium album Lowell Ahart 1981-11-6 3223 Butte Gray Lodge, south-west of Gridley. 35 Comment
  CDA3042  Chenopodium 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. Comment
  JEPS115185  Chenopodium botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC50360  Chenopodium pratericola Vernon Oswald; Robert McNairn 1990-6-1 4277 Butte Arroyo Chico (section not surveyed). 2815 San Verbena, northeast Chico. 62 Comment
  RSA726435  Chenopodium pumilio L. Ahart 2007-11-3 14566 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC109785  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC30901  Chimaphila menziesii M. S. Taylor 1978-9-9 1907 A Butte Bull Run Rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  CHSC11807  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  CHSC38877  Chlorogalum pomeridianum var. pomeridianum Vernon Oswald 1983-6-20 726 Butte Upper Bidwell park, Chico, along Yahi Trail e of Brown's Hole. 198 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 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
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC39074  Chorizanthe polygonoides var. polygonoides R. A. Schlising 1980-4-6 3545 Butte E of Chico along Skyway, 3.5 mi S of Paradise. 213 Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte 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. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  UC177565  Cirsium andersonii H. M. Hall 1914-6-30 9817 Butte northern Butte County Sierra Nevada Mountains 1615 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CAS-BOT-BC285524  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  CHSC6654  Cirsium vulgare M. MacArthur 1968-6-22 280 Butte Ca. 20 ft. from SE side of Big Chico Creek, near Esplanade bridge, Chico State College. 60 Comment
  CAS-BOT-BC228756  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CAS-BOT-BC164136  Clarkia concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga 365 Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC3275  Clarkia concinna subsp. concinna M. L. Hillier 1966-5-11 Butte On a ledge above Honeyrun Rd. 2.4 miles e. of covered bridge. Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CAS-BOT-BC164518  Clarkia gracilis subsp. albicaulis Lowell Ahart 1968-5-21 s.n. Butte West of Magalia 1000 Comment
  CHSC102723  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC84018  Clarkia gracilis subsp. albicaulis Lowell Ahart 2003-6-22 10297 Butte In a native plant garden at the Durham Elementary School, Durham, about 5 miles south of Chico. 47 Comment
  CAS-BOT-BC6941  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  JEPS95170  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  UC1071907  Clarkia mildrediae H. and M. Lewis, F. Vasek June 1950 756 Butte 0.5 mi s Arch Rock (Hwy.24); Feather River Comment
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC35147  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 B Butte E of Big Bend area of N Fork of Feather River and N of Brush Creek; N of French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  JEPS100226  Clarkia mildrediae subsp. lutescens Dean W. Taylor 2002-7-3 18219 Butte Forest Road 22N22 ca. 0.3 miles north of crossing of Fall River (ca. 1 air mile S of Walters Mine site) 1219 Comment
  CDA13323  Clarkia mildrediae subsp. mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13169 Butte Sierra Nevada; Approx. 1 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  LA206073  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 760 Butte Hwy 24, 2.0 mi S of Arch Rock on Feather River Comment
  UC1730255  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4663 Butte NW side of canyon of North Fork Feather River, along Pulga Road (Camp Creek Road) 3.0 mi N of Pulga Bridge (Hwy 70) 603 Comment
  CHSC64113  Clarkia mosquinii L. P. Janeway 1994-6-17 4668 Butte Along Poe Powerhouse Road 0.9 mi east of Bardees Bar Road; west side of canyon of North Fork Feather River. Southeast-facing road cutbank. 499 Comment
  CHSC37425  Clarkia purpurea subsp. quadrivulnera R. A. Schlising; K. Tarp 1982-7-28 4360 Butte NE of Oroville and NW of Mountain House; along French Creek; in meadow. 609 Comment
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  CAS-BOT-BC163643  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-25 2324 Butte Along Swedes Flat Road, near Bangor 320 Comment
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 Comment
  CAS-BOT-BC164796  Clarkia rhomboidea L. P. Janeway 1991-6-1 3985 Butte Northwest-facing cut-bank of Dark Canyon Road 3.3 mi south of Big Bend Road/Parkhill 304 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  SEINET10453164  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4118 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
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  SEINET10689282  Clarkia stellata Robert A. Schlising 1980-5-26 Schlising 3601 Butte Several miles sw village of Cohasset, along fireroad in chaparral e of Cohasset Road, T23N, R2E, sec 8; elevation ca 1350 feet; on shaded banks, among Quercus dumosa, Ceanothus integerrimus, Arctostaphylos viscida, A. mewukka, Rhus trilobata, Heteromeles arbutifolia. 405 Comment
  CHSC27342  Clarkia unguiculata T. B. Devine 1977-6-5 414 Butte Humbug Road, 2.2 mi ne of Centerville. 457 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
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CAS-BOT-BC443703  Claytonia rubra M. S. Taylor 1982-5-23 4510 Butte S side of hwy 70, by Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC96814  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  CHSC3379  Clematis armandii Robert L. Smith 1966-3-3 26 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC107391  Clematis lasiantha Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  CHSC26641  Clematis lasiantha M. S. Taylor 1977-11-12 1543 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  POM98212  Clematis lasiantha C. C. Bruce 1897-04 1903 Butte Butte Creek. Comment
  SEINET194862  Cogswellia marginata A. A. Heller 1941-4-16 16065 Butte Along US highway 99E 4 miles north of Biggs. Comment
  CHSC1736  Collinsia sparsiflora R. Carter 1965-3-9 151 Butte Found on Old Cherokee Rd., Oroville, 18 mi. N of intersection with Oregon Gulch Rd. on W bank above road. 243 Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  SEINET10548316  Collinsia tinctoria Mary Susan Taylor 1974-5-20 Taylor 254 Butte Chico. Comment
  SEINET10898249  Collinsia tinctoria Lowell Ahart 1985-5-15 Ahart 4977 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CAS-BOT-BC180255  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  CHSC40381  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Res. 594 Comment
  CHSC40475  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte Along the road at Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  SEINET12326795  Cordylanthus pilosus subsp. bolanderi Unknown 1983-1 4279 Butte near Humboldt Rd, ca 3 mi SW of Butte Meadows 1450 Comment
  CHSC63246  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CAS-BOT-BC210522  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  SD7620  Cornus sessilis Mrs. R. M. Austin 1883-1 Butte Comment
  CDA24603  Corydalis caseana T. C. Fuller 1962-7-11 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  RSA4205  Corydalis caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  CAS-BOT-BC401864  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC5961  Cotoneaster conspicuus M. MacArthur 1968-6-17 203 Butte SW end Administration bld., N corner, Chico State College campus. 60 Comment
  JEPS128724  Cotula australis Lowell Ahart 2017-4-22 21389 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CDA25355  Crassula connata T. C. Fuller 1958-4-15 4795 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC110990  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. 73 Comment
  JEPS118613  Crataegus monogyna L. P. Janeway 2011-4-20 10235 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. Chico 7.5; quad. Comment
  CHSC109865  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC33522  Crepis pleurocarpa R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4139 Butte E of N Fork of Feather River. Along Coyote Gap road, ca 0.5 mi S of Coyote Gap. 1219 Comment
  CHSC43960  Cressa truxillensis V. Oswald 1988-5-25 3338 Butte Pennington Rd. just south of W. Liberty Rd. on the edge of Gray Lodge Waterfowl Management Area. 21 Comment
  CHSC21015  Croton setiger M. S. Taylor 1975-10-3 947 Butte Roadsides, ca. 1/4 mi n of the washout, between River Road and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  JEPS124192  Croton setiger Lowell Ahart 2015-10-9 20543 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC47474  Crucianella angustifolia Lowell Ahart 1973-5-24 220 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS122259  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC190088  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte North of the state burrow area, west of Pacific Hieghts Road, about 5 miles southwest of Oroville. 40 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 Comment
  CHSC115369  Crypsis schoenoides Lowell Ahart 2015-4-24 20077 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  CHSC38801  Crypsis schoenoides Vernon Oswald 1983-7-21 888 Butte Upper Bidwell Park, Chico, in Lindo Channel neqar the flood-control gates. 79 Comment
  JEPS93989  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte ca. 7 (air) mi. n. Oroville (on bottom of very large vernal pool ca. 0.75 mi. n.w. of the cattle chute on the w. side of Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  SEINET10518393  Crypsis vaginiflora A. Arthur Heller 1914-7-31 Heller 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC113521  Cryptantha affinis Lowell Ahart 2014-7-7 19601 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  SEINET10877146  Cryptantha affinis Lowell Ahart 2007-5-29 Ahart 13926 Butte T21N, R6E, Section 28. Normal size plants, on dry rocky soil, near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. Foothill Woodland. 637 Comment
  UC78586  Cryptantha flaccida Mrs. R. M. Austin Apr 1896 Butte Little Chico Canyon Comment
  CHSC150  Cryptantha intermedia M. Diven 1930-5-6 Butte Chico. 57 Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  CDA13881  Cupressus macnabiana G. F. Hrusa, T. D. Wilfred 1997-5-7 13740 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  NY16718  Cupressus macnabiana C. B. Wolf 1934-10-5 6161 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET11739356  Cupressus macnabiana M. S. Taylor, Oswald, V. 1984-1 5395 Butte jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  CHSC58908  Cuscuta californica var. breviflora Lowell Ahart 1992-7-21 6821 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS98505  Cuscuta campestris Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  CHSC80753  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte Large vernal pool, east of the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  CHSC42336  Cycladenia humilis var. humilis L. P. Janeway 1987-6-27 2336 Butte Ridge overlooking Little Kimshew Cr to the east; 0.6 mi north of Ramsey Bar along the Concow Rd. 1432 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  CHSC33257  Cycloloma atriplicifolium R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. Comment
  CAS-BOT-BC190247  Cynodon dactylon Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC2424  Cynoglossum grande R. Carter 1965-3-15 166 Butte Found on bank above road on SE corner of intersection of Oroville-Forbestown Rd. and Swedes Flat Rd. ca. 10.5 mi. E of Oroville. 502 Comment
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC190393  Cynosurus echinatus Lowell Ahart 1987-5-6 5555 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS117276  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 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
  CHSC94596  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 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
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Gravel bar along the river. 48 Comment
  CHSC85160  Cyperus difformis John Dittes 2003-10-8 849 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  UC980096  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station Comment
  UCD141012  Cyperus difformis C. A. Janeway 1986-10-25 s.n. Butte city of Chico; Bidwell Park, in Big Chico Creek at Five-Mile Recreation Area. 79 Comment
  CHSC45248  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-4 1905 Butte Gravel bar along Butte Cr ca 2 1/2 mi east of The Skyway. 45 Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET9751966 Image available Cyperus eragrostis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  CHSC34131  Cyperus erythrorhizos L. Ahart 1981-9-19 3191 Butte On the edges of a pond ca. 100 m n of the Cresta Powerhouse and a little e of the Feather River along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC81933  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  JEPS120855  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  UC1100518  Cyperus erythrorhizos Herbert L. Mason 1945-9-19 12738 Butte Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge Comment
  JEPS95920  Cyperus esculentus Lowell Ahart 1999-8-13 8141 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
  CHSC109747  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC94648  Cyperus flavescens Lowell Ahart 2006-9-28 13379 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS95884  Cyperus flavescens Lowell Ahart 1999-8-13 8143 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
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 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
  UCD139946  Cyperus iria Whitney Brim-DeForest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  CHSC78282  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC113157  Cyperus squarrosus Lowell Ahart 2013-11-13 19244 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
  CHSC45150  Cyperus squarrosus Lowell Ahart 1972-5-24 112 Butte On the bottom of a small wash, 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
  CHSC56608  Cyperus squarrosus L. P. Janeway; R. A. Schlising 1988-7-16 3036 Butte Vernal pool next to Humbug Summit Road ca 0.8 mi west of Butte Creek House. 1805 Comment
  JEPS119891  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 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
  UC572227  Cyperus squarrosus H. S. Yates 1936-8-13 6101 Butte Butte Meadow Paunes Creek Quad., Butte Meadow 1341 Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC97396  Cyperus strigosus Robert Fischer 2006-6-19 1002 Butte Chico. Within upper Bidwell Park in the City of Chico. At edge of a remnant pool in Diversion Channel near junction of Lindo Channel, upstream of weir. 60 Comment
  UC1100633  Cyperus strigosus Verne Grant and Herbert L. Mason 1946-9-27 13140 Butte 3 mi. w. Biggs Comment
  UC1191380  Cypselea humifusa Malcolm A. Nobs, S. Galen Smith 1949-7-29 1088 Butte on road from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC110473  Cystopteris fragilis L. P. Janeway 2013-5-21 11115 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 1.1 air km north of Poe Dam, along Camp Creek Road at crossing of Dogwood Creek. 585 Comment
  CHSC44603  Cystopteris fragilis Vernon Oswald; Lowell Ahart 1987-8-5 3184 Butte Rock outcrops skirtinig the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  UC600417  Cystopteris fragilis E. B. Copeland July, 1930 Butte bank of Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  SD81976  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte Jonesville 1800 Comment
  SEINET10535616  Cystopteris fragilis Mary Susan Taylor 1980-8-2 Taylor 3203 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CAS-BOT-BC201006  Cytisus scoparius Lowell Ahart 1980-5-25 2333 Butte Near Old Forbestown 1000 Comment
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC42901  Danthonia californica var. americana Lowell Ahart 1987-7-8 5812 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC61368  Danthonia californica var. americana Lowell Ahart 1993-7-29 7121 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  CHSC44174  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC41995  Danthonia unispicata Lowell Ahart 1973-5-6 311 Butte Along Robinson Mill Road, west of Forbestown. 457 Comment
  CHSC11341  Datura ferox Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42008  Datura ferox Lowell Ahart 1986-11-7 5416 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC1460  Delphinium J. Koopman 1929-4-18 Butte Golf Course near Chico Creek. 76 Comment
  SEINET10536226  Delphinium Mary Susan Taylor 1976-3-9 Taylor 1022 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  SEINET10536229  Delphinium Mary Susan Taylor 1979-5-4 Taylor 1985 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  SEINET7081597  Delphinium nudicaule A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run and east of Paradise. Coordinate Datum: NAD27. UTM Zone 10, 615564mE, 4400438mN. Comment
  POM99315  Delphinium nudicaule C. C. Bruce 1897-04 s.n. Butte Butte Creek. Comment
  POM225867  Delphinium nuttallianum J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CAS-BOT-BC121624  Delphinium patens subsp. patens Helen M. Edwards 1916-6-1 s.n. Butte De Salba Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CHSC56777  Delphinium patens subsp. patens J. D. Jokerst 1981-4-2 1167 Butte Table Mountain; south of Cherokee Road where it intersects the east edge of the section, on east side of the mountain. 396 Comment
  UC1080381  Delphinium patens subsp. patens E. K. Balls 1957-5-23 22529 Butte 3 mi se turn-off (Hwy 32 to De Sabla) 670 Comment
  CHSC28157  Delphinium variegatum R. J. Goedl 1979-4-14 17 Butte Ca. 3.5 mi e of Highway 99, 20 ft n of Skyway. Field. 213 Comment
  CHSC41525  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy 32, ca. 2 mi. e on Humboldt Road on n side. 99 Comment
  CHSC53167  Delphinium variegatum Steve Alverez 1980-3-24 20 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  CHSC62827  Delphinium variegatum Ella Icard 1993-6-9 Butte Comment
  CHSC76957  Delphinium variegatum Margie Collins 1894-5-1 Butte Chico. Comment
  POM99307  Delphinium variegatum C. C. Bruce 1897-03 1918 Butte [No location data on label] Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. 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
  CHSC93352  Delphinium variegatum subsp. variegatum Lowell Ahart 2006-5-3 12568 Butte Along a small stream, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 386 Comment
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC192659  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  CHSC6704  Deschampsia danthonioides Marilyn Lee 1968-4-19 135 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC31700  Desmazeria rigida L. Ahart 1979-4-28 1852 Butte Along a wash near the old tunnel gold mine. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS105645  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
  SEINET10904730  Dicentra formosa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4465 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CAS-BOT-BC402390  Dicentra formosa subsp. formosa D. Parkinson 1964-5-1 s.n. Butte In vicinity of Monk's Store, Cohasset Stage Comment
  CDA36760  Dicentra pauciflora D. B. Joley 1969-6-12 268 Butte 9.5 miles northeast of Lomo, 0.5 mile east of Humboldt Rd., 25 ft above Butte Creek. Comment
  CAS-BOT-BC500056  Dichelostemma capitatum Jim Riley 1923-4-2 s.n. Butte Richardson Springs/. Comment
  SEINET12050634  Dichelostemma capitatum L. R. Perry 1988-1 10 Butte vic. Salmon Hole, ca 5 mi E of Chico Municpal Golf Course 122 Comment
  CHSC30700  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-5-27 2712 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC38768  Dichelostemma multiflorum Vernon Oswald 1983-5-18 346 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  UC203548  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 mi n Oroville (near Table Mountain) Comment
  UCD139257  Dichelostemma multiflorum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles north of Gridley. Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CHSC24870  Dichelostemma volubile T. L. Reynolds 1976-4-25 65 Butte Ca. 200 yds s of Butte Creek and ca. 400 yds sw of Covered Bridge, 6.9 mi ese of Chico. 121 Comment
  SEINET7073606  Dichelostemma volubile A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC503201  Dichelostemma volubile Carl B. Wolf 1937-5-13 8655 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi. E of Bangor 213 Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  UCD139266  Dichelostemma volubile Don Blosser 1970-5-9 12 Butte on Skyline Blvd. near Skyline Way, 5 miles east of Oroville. Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 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
  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
  SACT000981  Digitaria sanguinalis Herbert Copeland 1923-1 Butte Comment
  CAS-BOT-BC153764  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC20519  Diplacus angustatus M. S. Taylor 1975-4-26 528 Butte In meadow ca. 1/4 mi ne of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CAS-BOT-BC150503  Diplacus grandiflorus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CHSC33721  Diplacus kelloggii M. S. Taylor 1981-4-5 3485 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC3464  Diplacus kelloggii Roger Jaegel 1996-3-28 82 Butte Located on the top of table mountain three miles south of Cherokee. Comment
  CHSC92735  Diplacus mephiticus L. P. Janeway 2005-6-26 8439 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
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC38709  Diplacus tricolor Vernon Oswald 1983-4-20 357 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.) 85 Comment
  CAS-BOT-BC151465  Diplacus tricolor A. A. Heller 1940-5-13 15614 Butte Field 3 miles west of Chico, along State Highway #32 Comment
  CAS-BOT-BC208613  Distichlis spicata Lowell Ahart 1981-5-16 2808 Butte Along the edge of the road, Gray Lodge Waterfowl Management Area, 11 miles SW of Gridley 35 Comment
  CHSC114964  Dodecatheon hendersonii Lowell Ahart 2015-3-14 19947 Butte On the south side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  JEPS14261  Dodecatheon hendersonii Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5613 Butte 6.0 mi s Oroville (along road from Oroville s to Bangor); s of Oroville 167 Comment
  SEINET10547761  Dopatrium junceum Lowell Ahart 1991-7-21 Ahart 6668 Butte Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  POM68175  Downingia bicornuta C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  CHSC27490  Downingia pulchella M. S. Jaeckel 1974-4-23 34 Butte Found locally in muddy places and vernal pools, Chico. Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC114945  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte Along the poor old dirt road, about 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 352 Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  JEPS113175  Draperia systyla Lowell Ahart 2007-5-29 13932 Butte On the east side of Bald Rock Dome, along the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 585 Comment
  CDA40332  Draperia systyla G. D. Barbe, T. C. Fuller 1982-6-14 3684 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  UC600380  Drymocallis lactea var. austiniae E. B. Copeland 1930-7-12 Butte above Jonesville (head of Butte Creek area); , above Jonesville 1900 Comment
  CHSC84219  Dryopteris arguta Lowell Ahart 2003-7-12 10375 Butte On the sides of a wash, on the west side of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  UC115213  Dudleya cymosa Mrs. R. M. Austin May 1896 123 Butte Iron Canyon Comment
  SEINET10449679  Dudleya cymosa Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5281 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  CAS-BOT-BC428076  Dudleya cymosa subsp. cymosa Lewis S. Rose 1945-5-12 45017 Butte Richardson Springs 304 Comment
  CHSC28617  Dysphania ambrosioides M. S. Taylor 1979-10-5 2226 Butte SE side of Paradise Lake, ca. 1/2 mi n of Coutelenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC102821  Dysphania botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  CHSC46358  Dysphania pumilio Lowell Ahart 1989-5-29 6315 Butte Near the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CHSC83055  Dysphania pumilio Lowell Ahart 2002-10-17 9990 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
  CHSC105958  Echinochloa colona Lowell Ahart 2010-9-24 17236 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
  CAS-BOT-BC197105  Echinochloa crus-galli Lowell Ahart 1981-9-19 3180 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC2142  Echinochloa crus-galli D. Bower 1953-8-27 Butte Llano Seco. 30 Comment
  CHSC94762  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  SEINET4568167  Echinochloa oryzicola var. mutica B. Crampton 1963-9-9 6887 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station Comment
  POM219534  Echinodorus berteroi H. F. Copeland 547 Butte Nelson. Comment
  CHSC44295  Egeria densa V. Oswald 1988-6-8 3363 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  JEPS122150  Elatine Lowell Ahart 2014-8-8 19696 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  CHSC42127  Elatine heterandra Lowell Ahart 1984-5-8 4598 Butte About 2-1/2 miles north and 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 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
  SEINET13709377  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8711 Butte Rice Exp. Station NW of Biggs, Hamilton Rd. 1/8 Mi. E Riceton Rd. (T19B, R2E, S 35, se, Sw) 100 Ft. 30 Comment
  CDA14063  Eleocharis bolanderi G. F. Hrusa, T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC83294  Eleocharis decumbens L. P. Janeway; B. Castro 2002-7-7 7608 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  JEPS106370  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC78289  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  SEINET13709355  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8556 Butte 5 Air Mi. NE of Feather Falls, N Side Fall River 3 Mi. N of Lumpkin Ridge Road (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC45143  Eleocharis pachycarpa Lowell Ahart 1975-6-19 793 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET9084814  Eleocharis pachycarpa L. Ahart 2000-7-18 8597 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road, ca 4 air miles SW of Oroville. 40 Comment
  CHSC102793  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC44930  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte Along the bottom of a road gutter, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  UC1586534  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte 2 mi E of Honcut (Joie Osgood Ranch) 45 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  CHSC84269  Eleocharis quinqueflora Lowell Ahart 2003-5-28 10231 Butte Edges of a large vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  RSA365441  Eleocharis quinqueflora H. F. Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  CHSC100524  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, 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
  CDA38981  Eleocharis radicans L. Ahart 2000-8-3 8677 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC45318  Eleusine indica Vernon Oswald 1988-8-30 3695 Butte California State University, Chico, along Mansion Ave. 59 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8599  Elymus caput-medusae Dave Isle 1969-5-17 477 Butte On E. side of the Bare Hole turn-off from the Upper Bidwell Park road (E. of Chico). 59 Comment
  UC1133005  Elymus elymoides subsp. elymoides A. E. Wieslander 1933-6-23 323 Butte Bottle Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  SEINET10507701  Elymus glaucus Mary Susan Taylor 1977-6-25 Taylor 1364 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC234109  Elymus multisetus John Thomas Howell 1962-6-15 37529 Butte Magalia, Sierra Nevada 731 Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  SEINET10453209  Epilobium adenocaulon var. parishii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4212 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  UCR188571  Epilobium brachycarpum George 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
  SEINET10453001  Epilobium brachycarpum Lowell Ahart 1985-10-12 Ahart 5201 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC116143  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2015-10-26 20600 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile d(air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC64198  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-8-1 660 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC204406  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  RSA774140  Epilobium ciliatum subsp. glandulosum L. Ahart 2010-9-28 17248 Butte West side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1887 Comment
  RSA700273  Epilobium densiflorum L. Ahart 2004-7-20 11287 Butte North side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UC1594724  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte slopes about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  UCD169652  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte About 1/8 mile northwest of the West Branch Bridge across Lake Oroville, about 40 yards east of the intersection of Truex Road and Trevor Road, south edge of Truex Road. 306 Comment
  SEINET12194727  Epilobium glaberrimum M. S. Taylor 1978-1 1726 Butte on N side of Butte Creek, ca 0.12 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd 1524 Comment
  CHSC70343  Epilobium minutum L. Ahart 1982-6-4 3536 A Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  HSC38023  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2486 Butte Just E of Magalia Comment
  JEPS127074  Epilobium torreyi Lowell Ahart 2016-5-30 20898 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  RSA754451  Epipactis gigantea Lowell A. Ahart 2009-6-3 15833 Butte On E side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  UC426894  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville 1500 Comment
  CHSC113374  Equisetum hyemale subsp. affine Lowell Ahart 2014-4-16 19374 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  UC600577  Equisetum hyemale subsp. affine H. F. Copeland 1920-5-23 226 Butte Jonesville Comment
  CHSC112241  Equisetum laevigatum Lowell Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC34778  Eragrostis mexicana subsp. virescens L. Ahart 1981-11-6 3229 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. Along edge of the road. 35 Comment
  CAS-BOT-BC284080  Eragrostis pectinacea var. pectinacea Lowell Ahart 1977-7-10 1493 Butte 3 miles northeast of Honcut 50 Comment
  CAS-BOT-BC284081  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 1492 Butte The edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville 35 Comment
  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
  CHSC66458  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1996-6-10 7733 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the river at the N end of the Riparian Sanctuary. 28 Comment
  UCD64338  Eragrostis pectinacea var. pectinacea Beecher Crampton 1963-9-9 6886 Butte Honcut. 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
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  CHSC90971  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8377 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road about 1.2 km north of Mayaro and North Fork Feather River, 0.2 km east of Camp Creek. 747 Comment
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Jul 8 2014
  CHSC37079  Erigeron canadensis L. Ahart 1982-9-9 3770 Butte Ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  UC600739  Erigeron inornatus H. F. Copeland 1920-7-12 Butte Jonesville Comment
  SEINET10971237  Erigeron inornatus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4245 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC295419  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CHSC34042  Erigeron petrophilus var. sierrensis L. Ahart 1981-7-7 2932 Butte On a large hillside s of the rd, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC72439  Erigeron petrophilus var. sierrensis L. P. Janeway 1998-7-31 5906 Butte Along dirt road 100 ft above north end of the Lost Creek Reservoir dam. 981 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UCD100307  Eriogonum luteolum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside of Magalia Res. 310 Comment
  UCR270588  Eriogonum marifolium John F. Emmel 2001-7-24 1737 Butte Northern Sierra Nevada Mtns., headwaters area of Butte Creek, c, 4 air mi east of Jonesville 1829 Comment
  SEINET5043171  Eriogonum marifolium Unknown 1930-7-12 410 Butte Above Jonesville Comment
  CHSC39078  Eriogonum marifolium var. marifolium R. A. Schlising; K. Tarp 1983-8-12 4442 Butte N part of county, NE of Philbrook Reservoir on road to Carr Mine; 1.2 mile W of Plumas County line. 1981 Comment
  CAS-BOT-BC261716  Eriogonum nudum var. oblongifolium Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CHSC39015  Eriogonum nudum var. pubiflorum J. D. Jokerst 1983-8-21 1928 Butte Top of North Table Mt., ca 1/3 mile north of Beatson Hollow. Common along the edge of the basalt mesa in accumulation of basalt talus or on cliff faces and thin rocky soils. Comment
  CHSC50416  Eriogonum nudum var. pubiflorum Vernon Oswald; Lowell Ahart 1990-6-27 4337 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). On an open roadcut. 1109 Comment
  RSA722692  Eriogonum roseum Richard Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Jan 26 2017
  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
  SEINET5332483 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highwya 70 in Feather River Canon at the turnoff to Pulga. Comment
  CHSC37367  Eriogonum umbellatum var. nevadense R. A. Schlising 1982-8-1 4365 Butte E of Stirling City at white basalt Table Mountain; N end of Table Mt. 1859 Comment
  SEINET11934484  Eriogonum umbellatum var. polyanthum L. Ahart, Ahart, P. 1985-1 5113 Butte about 8mi NE of Feather Falls.on lava, ca 140yds S of dirt rd, Lumpkin Ridge, ca 1.5 mi E of camp 18 975 Comment
  CAS-BOT-BC262206  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  UC726280  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte 23 mi from Oroville (along the Feather River Highway e of Jarboe Pass) Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC100482  Eriogonum vimineum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC31069  Eriogonum vimineum M. Hayes; J. Warner 1977-9-11 59 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of Hwy 99 and Hwy 32 overpass in Chico. 914 Comment
  JEPS106049  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte 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
  CHSC19718  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-30 636 Butte Found on a gravel bar along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA34625  Erodium botrys L. Ahart 2009-4-17 15561 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  UCD103123  Erodium brachycarpum A. A. Heller 1914-3-13 11201 Butte Hills 8 miles north of Oroville. Comment
  CHSC30865  Erodium cicutarium J. D. Jokerst 1979-3-23 1157 Butte Adjacent to intermittent creeks. Top of North Table Mt., ca 100 m N of the intersection of Cherokee Rd and E edge of Mt. 396 Comment
  CHSC33689  Erodium cicutarium L. Ahart 1981-3-29 2712 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, near Forbestown. 350 Comment
  SEINET10495107  Erodium cicutarium Mary Susan Taylor 1973-1 Taylor 38 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS115288  Erodium moschatum Lowell Ahart 2009-4-3 15529 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC60968  Erysimum capitatum var. capitatum Lowell Ahart 1993-7-6 7058 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  CHSC90015  Erythranthe guttata Rebecca L. Hill 1990-4-19 13 Butte W side of the East Branch of Clear Creek, ca. 200 yds ne of Clear Creek Cemetery Road. Ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  CHSC27064  Erythranthe nasuta Lowell Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38702  Erythranthe nasuta Vernon Oswald 1983-5-7 443 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.7 mi e of the power lines. 353 Comment
  CHSC2477  Erythronium multiscapideum W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 365 Comment
  CHSC31344  Erythronium multiscapideum Leslie Steidl 1980-4-13 17 Butte Ca. 23 mi ene of Oroville, ca. 0.7 mi nne of Lumpkin Rd, ca. 0.25 mi w of Nutmeg Creek, ca. 5 yd e of a dirt road. 719 Comment
  UC1485464  Erythronium multiscapideum M. S. Taylor 1981-4-8 3518 Butte serpentine ridge on n side of Concow Rd ca 3/4 mi s jct with Ponderosa Way (ca 6 air mi n of Jarbo Gap on Hwy 70, ca 21 air mi n of Oroville); Pulga SW Quad 853 Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC504532  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte About 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  SEINET7030126  Erythronium multiscapideum M. S. Taylor, D. Hemphill 1981-3-18 3422 Butte Paradise Quadrangle. From bridge crossing West Branch Feather River, calculated 0.5 mile east and south along Ponderosa Way (Jordan Hill Road) and both banks of the river. in serpentine; calculated 1 mile northeast of Magalia. Elevation calculated 1600 to 1900 feet. [EX MO Herbarium Accession No. 3834966]. Comment
  CHSC51078  Erythronium purpurascens Pauleen Broyles 1987-7-19 1078 Butte Ca 7.2 km NE of Inskip. 1728 Comment
  CAS-BOT-BC502809  Erythronium purpurascens Clarence R. Quick 1952-6-30 52 -103 Butte Ridge top, Big Bar Mountain east of Pulga 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
  JEPS119533  Eschscholzia caespitosa Lowell Ahart 2012-4-20 17898 Butte On the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC402642  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  SEINET12094433  Eschscholzia caespitosa K. T. Pomeroy 1988-1 14 Butte ca 9.6 km N of Oroville, 75 m W of Table Mountain-Cherokee Road 245 Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29008  Eschscholzia lobbii M. S. Taylor 1980-4-4 2453 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
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  SEINET10841031  Euphorbia glyptosperma Mary Susan Taylor 1980-6-29 Taylor 2988 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CHSC10617  Euphorbia peplus Lowell Ahart 1968-2-22 Butte Peter Ahart Ranch, Honcut. Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  JEPS95142  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Hocut Creek) 60 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC38347  Euthamia occidentalis Vernon Oswald 1983-9-24 1045 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA724815  Euthamia occidentalis L. Ahart 2006-9-11 13275 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 air miles northeast of Oroville. 432 Comment
  CHSC42497  Fallopia convolvulus Lowell Ahart 1987-6-9 5722 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
  CHSC27262  Fatsia japonica P. Moyer 1971-10-30 52 Butte CSUC Campus. Front of 'A' Bldg. 60 Comment
  JEPS110142  Festuca Lowell Ahart 2006-5-19 12635 A Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  POM365944  Festuca californica var. californica L. Ahart, P. Ahart 1984-6-10 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CDA13232  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-8 13079 Butte Plumas National Forest; Uncommon perennial in shaded understory of conifer forest. Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  RSA754865  Festuca subulata L. Ahart 2008-6-2 14807 Butte South side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  SEINET223406  Filago gallica B. Ertter, J Strachan 1980-5-5 3265 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  CHSC85408  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CAS-BOT-BC62948  Frangula californica subsp. tomentella John Thomas Howell 1975-6-15 51073 Butte Butte Creek near Chico. 60 Comment
  CHSC104008  Fraxinus caroliniana Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16742 Butte On the south side of the path, about 30 yards south of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  RSA755763  Fraxinus latifolia L. Ahart 2009-5-23 15749 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  SEINET10457424  Fraxinus latifolia Mary Susan Taylor 1974-10-11 Taylor 327 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC28962  Fritillaria atropurpurea M. S. Taylor 1978-7-19 1773 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd ca. 7 mi ne of Jonesville. 1889 Comment
  CAS-BOT-BC130317  Fritillaria eastwoodiae A. A. Heller 1938-5-1 15058 Butte Above the reservoir beyond Magalia on Highway Comment
  CHSC2279  Fritillaria eastwoodiae R. Carter 1964-3-23 68 Butte 1/4 mi. down Truex Rd. off Hwy. 40 A on S side of road. 152 Comment
  CHSC40037  Fritillaria pluriflora R. M. Austin 1986-2-1 Butte Chico. Comment
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Jul 23 2013
  CHSC14002  Fritillaria recurva C. Eiser 1974-5-1 23 Butte Collected ca. 1/4 mi n of KHSL T. V. Station on Cohasset Rd, ca. 1.5 mi w of Cohasset Rd. 853 Comment
  UC725882  Fritillaria recurva A. A. Heller 1939-4-8 15367 Butte about 4 mi from Magalia (on the Coutolene Road); Coutolene Road Comment
  HSC23351  Fritillaria recurva T. C. DeWitt 1971-3-26 8 Butte S side of Butte Creek near Honey Run covered bridge 59 Comment
  UCR231507  Galium Anna M. Hurlbutt 2009-8-7 024 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  SEINET10500609  Galium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5523 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  JEPS98370  Galium aparine Lowell Ahart 2000-6-29 8534 Butte 5 air miles E of Magalia (Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  SEINET10500623  Galium aparine Mary Susan Taylor 1975-3-25 Taylor 427 Butte Chico. Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10935621  Galium aparine Mary Susan Taylor 1975-8-31 Taylor 887 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC96967  Galium bolanderi Lowell Ahart; Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  SEINET10968838  Galium divaricatum Mary Susan Taylor 1980-5-24 Taylor 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  UC1523187  Galium porrigens var. tenue M. S. Taylor and D. Hemphill 1981-3-18 3426 Butte s bridge crossing West Branch Feather River (ca 50 ft w of river, ca 1 mi ne of Magalia); Paradise SE Quad 487 Comment
  JEPS18283  Galium sparsiflorum subsp. glabrius Rimo Bacigalupi with H. Whisler 1957-7-26 6037 A Butte along Humbug Rd 2.2 mi sw Nimshew (at eastern canyonside of Butte Creek); eastern canyonside of Butte Creek 609 Comment
  CHSC32843  Galium tricornutum S. Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centenial Ave jct, 2.5 km E of Chico. 97 Comment
  CHSC53981  Galium tricornutum Vernon H. Oswald 1991-4-24 4529 Butte Hicks Lane, ca. 0.8 mi north of Sycamore Creek, in north Chico. 60 Comment
  JEPS98579  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  CHSC64218  Galium trifidum var. pacificum S. C. Morey 1983-7-24 622 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC30033  Gamochaeta argyrinea L. Ahart 1980-5-25 2326 Butte Along the edge of the road, ca. 1 1/2 mi e of the Bangor-Oroville Hwy, along Swedes Flat Rd, where the small stream crosses the road, near Bangor. 320 Comment
  CDA43422  Garrya D. G. Kelch 2012-9-19 12 .361 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CAS-BOT-BC169937  Garrya fremontii P. C. Everett; E. K. Balls 1959-10-20 23910 Butte 9.4 mi. NE. from Chico, State Hwy. 32, toward De Sabla 792 Comment
  CHSC69045  Garrya fremontii Lowell Ahart 1997-8-1 7759 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
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC44924  Gastridium phleoides Lowell Ahart 1988-7-24 6128 Butte On the bottom of a ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  SEINET11688674  Gastridium phleoides Unknown 1982-1 424 Butte at beginning of North Rim Trail, upper Bidwell Park ca 1 mi from East Ave, Chico Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 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
  RSA715595  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  CHSC37443  Gayophytum diffusum subsp. parviflorum R. A. Schlising; R. Banchero, R. Preston 1981-7-14 4144 Butte About 0.3 mi s of Humbug Summit in ne part of county. 1981 Comment
  CHSC11779  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Along Butte Creek. 1650 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
  CDA34698  Genista monspessulana L. Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  SEINET2140398  Gentianopsis simplex E. B. Copeland 1930-1 440 Butte Jonesvilee, Butte County. 1500 Comment
  CHSC35699  Geranium dissectum J. D. Jokerst 1982-5-1 1555 Butte North Table Mountain. Locally abundant in ephernal seep ca. 200 Met E of Phantom Falls (at the N fork of Coal Cr. canyon). Comment
  CHSC50047  Geranium dissectum Lowell Ahart 1990-4-8 6434 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC26604  Geranium molle T. S. Byler 1976-4-20 7 Butte Ca. 100 yds. S of Skyway 5.0 mi. E of California Highway 99-Skyway junction. 228 Comment
  CHSC92576  Geranium molle L. P. Janeway 2005-3-15 8358 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC41373  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-7-11 3878 Butte NE part of county near Merrimac; roadsides. 1203 Comment
  RSA712994  Gilia capitata subsp. mediomontana L. Ahart 2006-5-19 12637 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 406 Comment
  CAS-BOT-BC266586  Githopsis pulchella A. A. Heller 1914-5-22 11423 Butte Near Richardson Springs Comment
  SEINET10460571  Githopsis pulchella subsp. campestris Gray 1885-1 GRAY s.n. Butte Chico. Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC31948  Githopsis specularioides J. D. Jokerst 1979-5-1 1220 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  SEINET10464572  Githopsis specularioides A. Arthur Heller 1915-4-20 Heller 11853 Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  CHSC45500  Gleditsia triacanthos Lowell Ahart 1988-10-28 6190 Butte On the south side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC8568  Gleditsia triacanthos M. MacArthur 1968-6-13 362 Butte Chico State College Campus. 60 Comment
  JEPS121950  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 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
  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
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  CAS-BOT-BC302478  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road 731 Comment
  CHSC113155  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 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
  CHSC115367  Gnaphalium palustre Lowell Ahart 2015-4-24 20076 Butte On the sides of a large duck field, 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  SEINET10474674  Gnaphalium palustre Mary Susan Taylor 1979-10-2 Taylor 2211 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  POM252679  Goodyera oblongifolia E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  CHSC118061  Gratiola ebracteata Daphne K Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 231 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC82258  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC23381  Grevillea banksii 1966-3-31 Butte Comment
  UCD132497  Grindelia camporum M. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 1/2 mile off Pentz Road. Comment
  CAS-BOT-BC305289  Grindelia hirsutula J. D. Jokerst; M. S. Taylor 1979-10-13 389 Butte Jordan Hill Rd (Ponderosa Way), 2.8 mi n of jct with Concow Creek, ca. 4 mi ne of Lake Concow 609 Comment
  CHSC76119  Grindelia hirsutula var. davyi G. F. Hrusa; T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada. Feather Falls/Cascade Rd. Roadside. 1200 Comment
  CHSC83925  Hamamelis vernalis L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7741 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. 237 Comment
  CHSC31428  Helenium bigelovii L. Ahart 1980-7-20 2479 Butte Near the edges of seeps, near Bean Creek Rd, on the s side of Little Bald Rock, ca. 15 mi ne of Oroville. 1100 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  SEINET10475227  Helenium bigelovii Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4203 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CAS-BOT-BC105384  Heliotropium europaeum R. C. Wenk 2009-6-10 1115 B Butte Sacramento River National Wildlife Refuge. 1 air mile SE of where highway 32 crosses the Sacramento River 41 Comment
  CHSC34786  Heliotropium europaeum L. Ahart 1981-9-26 3199 Butte On a gravel bar along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  CHSC39360  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  SEINET12331820  Heliotropium europaeum Unknown 1985-1 5042 Butte Cherry Street, between 9th and 8th Street, Chico 61 Comment
  CHSC27212  Hemerocallis P. Moyer 1972-6-5 214 Butte S bank Chico Creek, between L. S. and Gus Magnolis Bridge, CSUC campus. 60 Comment
  JEPS124122  Hemizonella minima Lowell Ahart 2015-6-16 20227 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
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  POM219520  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC99004  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2008-5-21 14772 Butte 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, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC87190  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC101680  Hesperocnide tenella Lowell Ahart; Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  HSC1208  Hesperocyparis macnabiana C. E. Fellows 1965-12-29 215 Butte Coutelenc Rd. 0.5 mi. NNW of Magalia 701 Comment
  JEPS98553  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  CHSC1012  Hesperolinon micranthum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC116996  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC39668  Hesperolinon micranthum Lowell Ahart 1983-6-21 4094 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  JEPS120917  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  JEPS98429  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte 3 mi SE of Paradise (just W of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 286 Comment
  SEINET10493821  Hesperolinon micranthum Mary Susan Taylor 1981-5-21 Taylor 3769 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CDA2653  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. 0 Comment
  CHSC39533  Heterocodon rariflorum Lowell Ahart 1983-6-12 4040 Butte Along the edge of aroad near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  SEINET10972527  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte JONESVILLE 1150 M Comment
  SEINET10483021  Heuchera micrantha Mary Susan Taylor 1975-4-29 Taylor 547 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CDA7974  Hieracium scouleri T. C. Fuller 1958-7-7 1911 Butte 1 mile north of Pulga Station. 0 Comment
  CHSC60607  Hoita macrostachya L. P. Janeway 1992-6-13 4234 Butte Along Piute Drive, ca. 1/4 mi east of Dark Canyon Road and ca 1/2 mi south of Parkhill and Big Bend Road. 594 Comment
  UC1562435 Image available Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte about 2 mi ne Forbestown (along the road to the Forbestown Reservoir) 822 Comment
  CHSC102816  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC34248  Holodiscus discolor M. S. Taylor 1981-7-17 4069 Butte N side of Feather River Hwy 70 at Pulga bridge on large serpentine outcrop along Pulga Rd near bridge, ca. 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC150113  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  JEPS116087  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC33682  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Along edge of rd in Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC4410  Hordeum murinum subsp. glaucum 1966-5-25 Butte Arcadian Ave. across from Ed.-Psy. Building, Chico. Vacant lot. Comment
  CHSC31717  Hordeum murinum subsp. leporinum L. Ahart 1970-4-16 43 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6745  Hordeum murinum subsp. leporinum Marilyn Lee 1968-4-15 178 Butte 1076 E. First Ave., Chico. Almond orchard. Comment
  JEPS115240  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC111977  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte Along a small stream, west of a poor dirt road, about 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the Wesst Branch Bridge across Lake Oroville. 286 Comment
  SEINET10970307  Horkelia fusca subsp. parviflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4753 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  JEPS113241  Horkelia tridentata subsp. tridentata Lowell Ahart 2007-5-22 13904 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC536263  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  CHSC43664  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-21 2921 Butte Skyway between Stirling City and Inskip, 0.4 mi n of the junction of Powellton (Humbug) Rd. In wet ditch beside the road. 1377 Comment
  JEPS120934  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte About 50 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  CHSC63821  Hypericum formosum var. scouleri S. C. Morey 1983-8-2 678 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC20491  Hypericum perforatum M. S. Taylor 1975-6-25 792 Butte Abundant along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. Comment
  CAS-BOT-BC401337  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  SD3949  Ipomopsis aggregata E. B. Copeland 1929-7-24 Butte Jonesville. 1550 Comment
  UC1188250  Iris hartwegii L. W. Lenz and E. K. Balls 1955-5-13 20697 Butte 7 mi ne Pentz Trading Post (on road to U.S. Hwy 40 Alt from Oroville-Magalia road) 579 Comment
  CHSC61244  Iris hartwegii subsp. hartwegii K. B. McShea 1992-4-23 13 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  JEPS88861  Iris hartwegii subsp. hartwegii Carol A. Wilson 1992-5-18 92 -ph24 Butte 21 mi w Beldon (along Hwy 70, in Feather River Canyon); Feather River Canyon 426 Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CHSC2812  Iris macrosiphon David Prall 1965-3-14 Butte At roadside ca. 3 yds. west of Neal Rd. 2 miles east of Highway 99E. 152 Comment
  SEINET10469750  Iris macrosiphon Mary Susan Taylor 1976-4-4 Taylor 1060 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
  SEINET10469753  Iris macrosiphon Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4289 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC117402  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  JEPS104158  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte Ca 70-100 feet sw of the section corner pipe, ca 1/8 mi sw of the tall Digger Pine on the S edge of Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC94561  Juncus acuminatus Lowell Ahart 2006-9-13 13326 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC1609495  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  JEPS114860  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 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
  CHSC61517  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC8229  Juncus bufonius var. bufonius J. G. Moore 1969-4-18 24 Butte West side of Cherokee Rd., 2.5 mi. s of Hwy. 70. 365 Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  JEPS122033  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC42377  Juncus covillei Lowell Ahart 1987-5-27 5707 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
  SEINET11787470  Juncus cyperoides P. Ahart, Ahart, L. 1984-1 4692 Butte ca 0.5 mi SW of jct of Black Bart Rd & Forbestown Rd, ca 14 mi E of Oroville 650 Comment
  UCD141428  Juncus cyperoides L. Ahart 1982-6-1 3527 Butte east side of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 2000 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  CHSC111289  Juncus effusus subsp. effusus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16758 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin road; UTM 10 655439 east, 4387540 north, +/- 49 feet (NAD83). Comment
  CHSC39675  Juncus effusus subsp. pacificus Lowell Ahart 1983-6-21 4099 Butte Found along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CHSC94601  Juncus effusus subsp. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  SBBG121547  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte ca. 30 yards S of Oroville Dam Blvd, ca. 0.25 mi SW of old overlook, ca. 4 mi NE of Oroville 166 Comment
  JEPS110168  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET3450941  Juncus ensifolius Unknown 2003-6-30 10336 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  SBBG121549  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte E side of Encina Grand Rd (Bloomer Hill Rd), ca. 50 yards N of the home, ca. 0.25 W of Bloomer Hill 808 Comment
  CHSC28656  Juncus exiguus J. D. Jokerst 1979-10-13 383 Butte Along edges of Concow Cr. Intersecton of Concow Rd. Comment
  CHSC57155  Juncus hemiendytus var. hemiendytus L. P. Janeway; R. A. Schlising 1988-7-1 2913 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Bed of vernal pool. 2011 Comment
  CHSC44444  Juncus howellii Lowell Ahart 1988-6-23 6071 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CHSC103508  Juncus laccatus Peter F. Zika 2009-6-17 24514 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC93493  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 339 Comment
  HSC100809  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte ~100 yd. E of Cherokee Rd., ~200 yd. NE of parking area, North Table Mountain, 4.5 (air) mi. NE of Oroville. 386 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  JEPS98526  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte N side of dirt road, 100 yds N of Lumpkin Ridge Road, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd, road to Fall River, and the County Rd, 4 air mi NE of Feather Falls 1219 Comment
  CHSC113516  Juncus oxymeris Lowell Ahart 2014-7-7 19595 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 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
  JEPS121384  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock Comment
  CHSC99012  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  SEINET10472480  Juncus triformis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4168 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC116023  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC59019  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  RSA726656  Juncus usitatus L. Ahart 2007-7-5 14249 Butte 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air southwest of Gridley. 25 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  SEINET10964512  Keckiella Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5520 Butte Arch Rock Tunnel Picnic Area on Hwy 70, near Butte/Plumas County line. On granite, overlooking Feather River. Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  CHSC1857  Keckiella corymbosa M. Underhill 1952-7-18 Butte Indian Marker for Richardson Springs. 243 Comment
  CHSC27996  Kelloggia galioides M. S. Taylor 1978-7-18 1678 Butte On W side of Hwy 32, ca. 1/4 mi N of Forest Ranch. 718 Comment
  UCR133592  Kelloggia galioides H. F. Copeland 1930-7-21 1327 Butte Jonesville 1524 Comment
  CHSC26818  Koeleria phleoides M. S. Taylor 1978-5-7 1594 Butte On e side of Williams Rd, ca. 1/2 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CHSC52822  Kumlienia hystricula Leslie Steidl 1980-3-19 5 Butte Ca. 16.5 mi e of Oroville on e side of Lumpkin Rd. 150 yd upstream on McCabe Creek. 384 Comment
  CHSC26744  Kyhosia bolanderi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1469 Butte Meadows, around Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC32543  Lactuca serriola S. Posner 1972-9-21 Butte 100 yds. west of Nord Ave, 200 yards south of Sacramento Ave., in almond orchard. Chico. Comment
  UCD133533  Lactuca serriola L. Ahart 1983-9-19 4457 Butte around 1/8 mile south of the Graylodge Wildlife Refuge headquarters, around 12 mile southwest of Gridley. 35 Comment
  UCD133541  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CAS-BOT-BC341297  Lagophylla glandulosa Mary E. Wall 1935-11-10 s.n. Butte Pentz Comment
  CAS-BOT-BC341309  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  CAS-BOT-BC341315  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CAS-BOT-BC341318  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  JEPS115271  Lagophylla ramosissima Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  CAS-BOT-BC271247  Lamarckia aurea Lowell Ahart 1980-3-23 2050 Butte West Branch Bridge, Highway 70 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  RSA0060802  Lamium purpureum Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  SJSU11864  Lasthenia californica subsp. californica J. B. Willis Jr. 1969-5-3 96 Butte by Cherokee Rd 8 mi NE of Oroville Comment
  UC195381  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte between Durham and Nelson (in low field by creek); Butte Creek 53 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  UCSC004638  Lasthenia glabrata subsp. glabrata Lowell Ahart 2005-6-1 11843 Butte T23N, R15E, Section 30, Hwy 70, east of the Plumas Co Airport, about 3 miles east of Beckwourth 1412 Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  RSA406664  Lathyrus jepsonii subsp. californicus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC38494  Lathyrus jepsonii var. californicus Vernon Oswald 1983-4-20 348 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). 91 Comment
  CHSC93981  Lathyrus nevadensis var. nevadensis R. D. Fischer 2004-6-20 768 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected at north end of Chico Meadows, adjacent Scout Road, along a meadow edge. 1371 Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CAS-BOT-BC213294  Lathyrus sulphureus Mrs. H. C. Cantelow 1939-5-19 2438 Butte Near Brush Creek Ranger Station, E. of Oroville Comment
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC109659  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  CHSC111975  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-6-2 18131 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  SBBG126097  Leontodon saxatilis subsp. longirostris L. Ahart 2012-6-2 18131 Butte Truex Rd, W of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of W Branch Bridge across Lake Oroville 286 Comment
  CHSC38374  Leontodon saxatilis subsp. saxatilis Vernon Oswald 1983-4-25 378 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east intermittent stream feeding into Sycamore Creek. 365 Comment
  CHSC37619  Lepechinia calycina T. B. Devine 1979-7-8 582 Butte Along Hwy. 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  CAS-BOT-BC88807  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10448291  Lepidium perfoliatum Mary Susan Taylor 1982-4-28 Taylor 4363 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
  CHSC103655  Lepidium strictum Lowell Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  SBBG128031  Lepidium strictum L. Ahart 2010-4-5 16573 Butte vacant lot, ca. 50 feet W of Virginia St, ca. 20 feet S of Spruce St, in Gridley 28 Comment
  CHSC42700  Lepidium virginicum var. pubescens Lowell Ahart 1987-5-6 5511 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
  SBBG126095  Leptochloa fusca subsp. fascicularis L. Ahart 2011-10-29 17731 Butte bare sides of a ditch, on S side of Biggs Princeton Rd, ca. 500 yards W of Riceton Hwy, ca. 1 mi NW of Biggs 27 Comment
  RSA113234  Leptosiphon androsaceus E. K. Balls, Lee W. Lenz 1955-5-13 20685 Butte 5 mi. s. of Paradise on road from Oroville to Magalia 427 Comment
  CHSC31377  Leptosiphon bicolor Roberta A. Boer 1980-4-13 10 Butte Ca. 1/4 mi w of Foothill Blvd., 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CHSC101307  Leptosiphon filipes Lowell Ahart 2009-4-22 15586 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC45452  Leptosiphon filipes Lowell Ahart 1980-7-20 2476 Butte Near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  CHSC46222  Leptosiphon filipes Pauleen Broyles 1987-6-19 1057 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  RSA715925  Leptosiphon filipes L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Opening under high power transmission lines. 981 Comment
  CHSC1272  Leptosiphon parviflorus J. Gulick 1929-4-18 Butte Rifle Range near Chico Creek. 106 Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CAS-BOT-BC341789  Lessingia nemaclada John Thomas Howell 1962-6-16 37551 Butte Magalia 731 Comment
  RSA32020  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  CHSC34143  Lessingia virgata L. Ahart 1981-9-27 3211 Butte Field near or ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  UC1069830  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mi w Tres Vias; Chico Quadrangle Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC28421  Lewisia cantelovii M. S. Taylor 1979-9-28 2194 Butte Butte county line at Hwy 70, between boundary and ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  POM280175  Lewisia nevadensis J. H. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  CHSC57134  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-22 3050 Butte Upper Coon Hollow; just below saddle between Coon Hollow and Chips Creek. 1920 Comment
  UC600463  Lilium kelleyanum E. B. Copeland Jul 1929 Butte Butte Creek; Jonesville 1550 Comment
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Dec 13 2006
  CHSC41464  Lilium washingtonianum Lowell Ahart 1986-7-2 5335 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CAS-BOT-BC133053  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  RSA21487  Limnanthes alba Carl B. Wolf 1937-5-14 2814 Butte Sacramento Valley, 3-1/2 mi. E. or Richvale. 30 Comment
  CHSC2388  Limnanthes alba subsp. versicolor R. Carter 1965-4-12 178 Butte Found 7.5 mi. E of Oroville, 20 yds. from gate at end of Feathervale on N side of road. 274 Comment
  RSA767488  Limnanthes douglasii L. Ahart 2010-6-9 16788 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
  JEPS104319  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC42218  Limnanthes floccosa subsp. californica John E. Hunter 1986-3-30 39 Butte Ca. 1 km e Chico, 50 m s Hwy. 32. 75 Comment
  CHSC67548  Limnanthes floccosa subsp. californica James D. Jokerst; Greg Sutter 1991-3-26 3225 Butte Type Locality: S and adjacent to Gold Run Creek 50 m W of Hwy. 99. 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
  CHSC31874  Limosella aquatica L. Ahart 1978-4-2 1624 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM65888  Linanthus dichotomus subsp. meridianus E. B. Copeland 1903-4-11 3030 Butte Chico. Comment
  RSA0096836  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UCSC010313  Linanthus filipes Lowell Ahart 2000-6-27 8526 Butte North part of Big Bald Rock, about 100 yards south and west of the north and east forest line, about 3 air miles east of Madrone Lake, about 12 air miles northeast of Oroville 963 Comment
  SD4004  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville, Mountain top west of the Summit Comment
  UCD19366  Lindernia dubia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 857 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  JEPS122255  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  JEPS98349  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte 12 air miles SW of Chico (E edge of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry. 2 mi SE of Ordbend) 32 Comment
  RSA0106687  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 Butte Below 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
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  SEINET10482996  Lithophragma Mary Susan Taylor 1981-4-5 Taylor 3496 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC31214  Lithophragma bolanderi M. S. Taylor 1980-4-16 2497 Butte Lake Oroville State Recreation Area, ca. 1.4 mi s of Parish Camp, ca. 1 mi n of Hwy 70 bridge over Feather River, ca. 5 mi s of Paradise. 304 Comment
  RSA638247  Lithophragma bolanderi Michael A. Vincent, Ethan H. Freid 1998-4-6 8135 Butte Table Mountain Comment
  SEINET10483075  Lithophragma bolanderi Mary Susan Taylor 1980-4-16 Taylor 2497 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CAS-BOT-BC432266  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  JEPS5851  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte 6 1/4 mi e Oroville (J. M. Kehlor ranch); e of Oroville Comment
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  JEPS102332  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  CHSC87549  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Sierra Nevada foothills on the edge of upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on top of a ridge next to the old Hwy 32 Road near the north end of Humboldt Trail. 426 Comment
  CHSC32732  Lomatium marginatum M. S. Taylor 1981-4-8 3490 Butte E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo gap on hwy 70; rd bank. 396 Comment
  CHSC33142  Lomatium marginatum J. D. Jokerst 1981-5-14 1321 Butte Top of North Table Mt, ca. 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  CHSC13852  Lomatium utriculatum J. A. Guichard 1973-4-4 14 Butte Area above Chico Creek between Salmon Hole and Devils Kitchen. 182 Comment
  CHSC94926  Lomatium utriculatum K. Lang; Classmates 2005-3-1 Butte Table Mountain. Comment
  UCD80006  Lomatium utriculatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 c Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  SEINET10454537  Lomatium utriculatum Mary Susan Taylor 1979-6-12 Taylor 2302 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC241434  Lonicera involucrata var. involucrata H. F. Copeland 1920-8-29 141 Butte Jonesville 1219 Comment
  CHSC44147  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 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
  CHSC86143  Lonicera involucrata var. involucrata John Dittes 2002-6-29 625 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  SEINET10452364  Lotus micranthus Lowell Ahart 1985-5-31 Ahart 5033 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  UC176294  Lotus purshianus var. purshianus A. A. Heller 1913-9-12 11132 Butte on Big Chico Creek Chico, Big Chico Creek Comment
  UC1562369  Lotus scoparius Lowell Ahart 1990-5-21 6474 Butte 4.5 mi sw Oroville (0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 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 51/2 mi (air) W of Oroville 36 Comment
  UC726093  Lupinus A. A. Heller 1928-6-28 14671 Butte Butte Meadows Comment
  UC726682  Lupinus A. A. Heller 1942-5-18 16478 Butte a short distance w of the Hooker Oak e Chico Comment
  JEPS113455  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River 486 Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  POM161687  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 s.n. Butte Jonesville. 1600 Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  UCD77845  Lupinus bicolor Robert E. Preston 2004-3-23 2207 Butte Chico, SW of jct Humboldt Rd and Bruce Rd 79 Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CAS-BOT-BC323940  Lupinus latifolius subsp. longipes M. S. Taylor 1978-7-21 1822 Butte On S side of Oroville-Quincy Hwy, ca 14 mi N of Lake Madrone. 1463 Comment
  CAS-BOT-BC323941  Lupinus latifolius subsp. longipes M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  RSA699517  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 549 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  UCD109008  Lupinus nanus A. A. Heller 1919-3-29 13105 Butte Cherokee mine. 457 Comment
  CHSC3651  Lupinus nanus var. apricus Robert D. Briggs 1966-3-28 R.- 94 Butte East end of table Mt., 2 miles east of Cherokee. Comment
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  JEPS105664  Lupinus nanus var. vallicola L. P. Janeway, John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek 287 Comment
  JEPS115828  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC65780  Lupinus polycarpus Vernon H. Oswald 1996-4-10 7348 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. Common among weeds on the N end of the levee road between Tract6 and Tract 7.1, Sanctuary 1. 32 Comment
  SD48504  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobin's, ca. 7 miles NE of Butte-Plumas county line, mostly disturbed areas in sun 640 Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CHSC90808  Lupinus succulentus Lowell Ahart 2005-5-2 11757 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
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  SEINET10472541  Luzula cascadensis Mary Susan Taylor 1978-7-18 Taylor 1719 A 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
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  CAS-BOT-BC436646  Luzula comosa var. laxa H. F. Copeland 1920-7-11 71 Butte Scotch John Meadows 1828 Comment
  CHSC11962  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  CHSC109082  Luzula macrantha Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CAS-BOT-BC441205  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Peter Ahart Ranch, Honcut 50 Comment
  SBBG128085  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, bottom of an old gold mined area, ca. 400 yards SW of the cemetery, ca. 10 mi NE of Oroville 305 Comment
  CHSC43841  Lycopus americanus B. Castro 1987-8-25 208 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99, ca 2.1 mi s of Skyway in Chico. 68 Comment
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side 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
  SEINET7073010  Lythrum hyssopifolia A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA5125  Lythrum salicaria L. Ahart 2000-7-18 8598 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS120857  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  JEPS95946  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC54861  Madia citrigracilis Vernon H. Oswald 1991-8-26 4848 Butte Chico Meadows on the southeast side of Big Chico Creek at the Scout Camp, ca. 1 mile north of Butte Meadows. Upper border of the meadow on the east side of the 'swimming hole. 1292 Comment
  CAS-BOT-BC342710  Madia elegans Lowell Ahart 1982-6-4 3543 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC342711  Madia elegans Lowell Ahart 1981-7-7 2927 Butte Sutter Buttes Area. Along Black Bart Road, west of Forbestown. About 0.5 mile west of the Oroville-Forbestown Road 700 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC345234  Madia subspicata Lowell Ahart 1982-5-28 3438 Butte Sutter Buttes Area. Near North Honcut Creek, near the Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC347380  Malacothrix floccifera John Thomas Howell 1951-6-26 27516 Butte Big Bend Mt. 609 Comment
  SBBG128773  Malva pseudolavatera L. Ahart 2013-5-21 18702 Butte waste area along fence, W side of Hwy 99E, 30 yards N of W Rio Bonito Rd, ca. one mi NE of Biggs 31 Comment
  CHSC34011  Malvella leprosa L. Ahart 1981-7-26 3012 Butte Ca. 1/2 mi s of Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley; near the equipment barn. 35 Comment
  SEINET10448088  Marah fabacea Mary Susan Taylor 1973-1 Taylor 51 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC42547  Marah watsonii Lowell Ahart 1987-5-12 5648 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 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
  CHSC27241  Marrubium vulgare P. Moyer 1972-5-7 196 Butte CSUC Campus. N bank Chico Ck., e of L.S. Bridge. 60 Comment
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 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
  CHSC42163  Meconella californica S. K. Fukuyama 1986-3-18 2 Butte 150 ft s of Butte Creek, ca 300 yds w of Covered Bridge, 6.3 mi ese of Chico. 118 Comment
  CHSC42202  Meconella californica Victoria Lorber 1986-3-18 Butte S bank of Butte Creek, ca 150 yd wsw of Covered Bridge, ca 7 mi e of Chico. 91 Comment
  CHSC4668  Meconella californica R. Carter 1966-4-11 341 Butte Found ca. 1/2 mi. E of Bidwell Bar along old R. R. tracks; growing in sandy soil in middle of tracks. 152 Comment
  RSA144587  Meconella californica W. R. Ernst 1958-3-27 215 Butte Slopes above Butte Creek Bridge on the Honeyrun road to Paradise (east of Chico) 152 Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  CHSC61918  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte On the banks of an irrigation ditch, on the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CHSC101309  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just 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
  CHSC71175  Medicago polymorpha Lowell Ahart 1998-6-9 7978 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CHSC69122  Melica aristata Lowell Ahart 1997-8-1 7804 Butte On the south side of County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  SEINET175798  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville Butte County. 1550 Comment
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  CHSC67413  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2223 Butte Serpentine body, above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  HSC23498  Melica californica S. Armantrout 1969-5-2 24 Butte Cohasset Hwy., 0.5 mi. W of Rock Creek Rd. Comment
  UCD87136  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia. 731 Comment
  JEPS106314  Melica geyeri Lowell Ahart 2004-6-22 11110 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC41167  Melica harfordii L. P. Janeway; Gary Benson 1984-7-17 Butte Plumas N.F. ECOS plot 11-001. Slope on east side of French Creek. 685 Comment
  CHSC100928  Melica stricta R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4327 Butte Northeast of Phillbrook Reservoir, along crest of Snow Mountain 2103 Comment
  UC1562308  Melica stricta Vernon Oswald and Lowell Ahart 1990-7-19 4374 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, 0.6 mi w of the Plumas County line) 1950 Comment
  JEPS108970  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC111140  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CDA13827  Mentha canadensis G. F. Hrusa, T. D. Wilfred 1996-9-5 13555 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC26619  Mentha canadensis M. P. Hayes 1977-9-24 116 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CHSC89463  Mentha canadensis R. D. Fischer 2004-7-21 450 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  CDA5710  Mentha pulegium L. Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC428754  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap 350 Comment
  CHSC30653  Micranthes fallax M. S. Taylor 1979-5-4 1989 Butte Along Millsap Bar Rd, 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC429040  Micranthes nidifica Lowell Ahart 1980-2-23 2026 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC429204  Micranthes oregana F. N. Bassett 1923-6-21 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC116965  Micropus californicus Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Spillway. 118 Comment
  SFV10349  Micropus californicus M. L. Vincent 1963-6-6 373 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  CHSC6064  Micropus californicus var. californicus E. Parreno 1968-5-10 88 Butte Skyway se side ca. 5 mi from Paradise. Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  SEINET10474314  Microseris douglasii Lowell Ahart 1985-4-29 Ahart 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC46335  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Along the edges of a dirt road, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC349165  Microseris elegans Lowell Ahart 1979-5-21 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10969159  Microsteris gracilis Mary Susan Taylor 1978-6-24 Taylor 1643 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET12326951  Mimulus angustatus D. K. Aust 1981-1 18 Butte Cohasset Ridge, ca 6 mi NW of Chico 482 Comment
  POM202464  Mimulus aurantiacus var. grandiflorus L. S. Rose 1933-5-26 33186 Butte Feather River Canyon 5 mi. e. of Oroville 152 Comment
  UC885699  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1939-6-7 39242 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10570193  Mimulus bicolor Mary Susan Taylor 1978-7-18 Taylor 1683 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  POM219172  Mimulus breweri E. B. Copeland 1920-7-11 268 Butte S. Wats neighborhood of Jonesville, Scotch John Meadow Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  RSA712824  Mimulus floribundus L. Ahart 2006-5-3 12563 Butte About 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 378 Comment
  RSA309183  Mimulus glaucescens Robert F. Hoover 1936-5-21 1158 Butte 3 miles north of Chico Comment
  UCSB63616  Mimulus glaucescens Griffiths, Troy 1988-3-15 Butte Vic. Salmon Hole; ca. 5 mi e of Chico Municipal Golf Course; Chico 121 Comment
  JEPS117136  Mimulus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 304 Comment
  POM252815  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte The treeless, undulating plain of Table Mountain. 305 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  UCD96009  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-4-8 759 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  CDA13309  Mimulus moschatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13155 Butte Sierra Nevada; Jordan Creek on W side of bridge over Marble Creek on USFS N60. Comment
  CHSC102403  Mimulus moschatus Lowell Ahart 2009-6-30 15978 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET12319570  Mimulus nasutus Detzer, Sacks 1977-1 23 Butte S side of Honey Run Rd ca 1 km E of Covered Bridge Comment
  UC1063005  Mimulus torreyi P. L. Johannsen 1936-7-16 919 Butte 1 3/4 mi ese Butte Mdws. (Plot 1); Lassen National Forest, Paynes Creek Quadrangle Comment
  POM5163  Mimulus tricolor A. A. Heller, H. E. Brown 1902-5-15 5554 Butte Near Biggs. From type locality. Comment
  CHSC39770  Minuartia californica Terrie Wilson 1978-10-4 14 Butte N side of Hwy 32, ca. 1.4 mi e jct. Hwy 99 and 32v at Chico. 76 Comment
  CHSC93359  Minuartia californica Lowell Ahart 2006-4-28 12550 Butte About 50 yards north of the rim of Beatson Hollow, about 120 yards south of the poor dirt road, about 1/8 mile southeast of the reservoir, about 2 1/8 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  RSA715728  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET7072730  Minuartia californica A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  CHSC103951  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  POM101121  Minuartia douglasii C. C. Bruce 1897-06 1958 Butte Fields near Chico. Comment
  SEINET11933237  Minuartia douglasii Unknown 1984-1 87 Butte Ca 440 yds W of Cherokee Rd., on North Table Mountain. Ca 6 mi N of Oroville 396 Comment
  SD2102  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville, damp woods 1500 Comment
  CHSC50675  Monardella breweri subsp. lanceolata Lowell Ahart 1990-5-25 6496 Butte Near the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 277 Comment
  CHSC51226  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along the edge of Swedes Flat Road, about 1/10 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  SEINET10836958  Monardella lanceolata Lowell Ahart 1984-6-8 Ahart 4662 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC102988  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC79520  Monardella sheltonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13975 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CAS-BOT-BC220254  Monardella sheltonii Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CAS-BOT-BC220453  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte At the highway bridge over the Feather River near Oroville Comment
  CDA40936  Monardella venosa James D. Jokerst & Barbara Castro 1992-5-19 3355 Butte Unnamed canyon north of Nugen Canyon on the south side of Neal Rd. near the Butte County Sanitary Landfill. Comment
  CHSC45393  Montia linearis Vernon Oswald 1984-5-9 1182 Butte Near Camp Lassen, Chico Meadows on Scout Rd. ca. 1 mi n of Butte Meadows. Growing in a wet, sandy spot on the edge of Chico Creek. 1292 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
  UC1564738  Muhlenbergia andina V. Oswald and L. Ahart 1989-7-21 3885 Butte meadow paralleling Humbug Rd just ne West Branch of the Feather River (ca 0.5 mi ne of Snag Lake, ca 2.5 mi (air) se of Jonesville) 1780 Comment
  CHSC76407  Muhlenbergia filiformis Lowell Ahart; Vernon H. Oswald 1999-10-3 8284 Butte Area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95025  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  SEINET10599802  Muhlenbergia filiformis A. Arthur Heller 1917-7-28 Heller 12833 Butte Moist open places in the yellow pine forest, Butte Meadows. Douglas fir, white fir, and incense cedar are also plentiful, Ceanothus cordulatus and Uva-ursi common shrubs. 1280 Comment
  CHSC113475  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  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
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC44477  Myosotis discolor Lowell Ahart 1988-5-1 5975 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. 274 Comment
  CHSC31723  Nassella pulchra L. Ahart 1975-5-12 764 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC105810  Navarretia capillaris Lowell Ahart 2010-9-21 17208 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
  POM219095  Navarretia capillaris H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  CHSC25255  Navarretia divaricata M. S. Taylor 1977-6-26 1393 Butte On s side of Ponderosa Way, ca. 4 mi e of Cohasset. 548 Comment
  CHSC29377  Navarretia divaricata R. A. Schlising; S. Azevedo 1980-6-13 3699 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC89480  Navarretia filicaulis Jenny Marr 1994-7-6 211 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC35115  Navarretia leptalea R. A. Schlising 1980-7-7 3856 Butte E part of county, Lumpkin Ridge, along Lumpkin/La Porte Road, just W of road dropping down to Fall River. 1280 Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  UC856833  Navarretia leucocephala A. A. Heller 1914-5-11 11387 Butte 8 mi n Oroville Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. Comment
  CHSC66962  Navarretia leucocephala subsp. leucocephala James D. Jokerst; Chuck Ricard 1993-4-12 3948 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  JEPS104317  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2003-5-28 10232 Butte 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
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  UCD80642  Navarretia leucocephala subsp. leucocephala CNPS SN Foothill Team 2005-5-3 SNFN 0198 d Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CHSC109731  Navarretia nigelliformis subsp. nigelliformis B. Castro 2006-5-25 1533 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  CHSC36707  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi w of junction of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC36710  Navarretia pubescens D. H. Ikeda 1980-5-10 349 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in field. Comment
  RSA717293  Navarretia pubescens L. Ahart 2005-5-28 11822 Butte on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  SEINET10869734  Navarretia squarrosa Mary Susan Taylor 1977-6-25 Taylor 1393 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC28860  Navarretia tagetina J. D. Jokerst 1979-5-18 463 Butte Top of North Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  CHSC37265  Nemacladus capillaris L. Ahart 1982-6-15 3570 Butte Near a seep, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC84212  Nemacladus interior Lowell Ahart 2003-7-10 10371 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  NY337170  Nemophila glauca Mrs. C. C. Bruce 2037 Butte Comment
  CHSC115445  Nemophila heterophylla M. Sutton; C. Yasuda 2013-4-9 29 Butte Centerville Flumes. 350 Comment
  CHSC32727  Nemophila heterophylla M. S. Taylor 1981-4-8 3494 Butte At end of Dark Canyon Rd around the turnout near the restroom, up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  SFV11585  Nemophila heterophylla M. L. Vincent 1964-4-8 504 Butte Sierra Nevada Highway 40, 1 mile northeast of new bridge. 450 Comment
  UC196271  Nemophila heterophylla A. A. Heller 1914-3-19 11216 Butte Canyon of Big Chico Creek 76 Comment
  SD60314  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte Along Chico creek about 4 miles east of Chico in the Quercus lobata belt. Comment
  CHSC109122  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 Butte On and around a large rock outcrop, 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. 215 Comment
  CHSC112214  Nemophila pedunculata Lowell Ahart 2013-4-20 18564 Butte Near fence corner, on the northeast corner of the intersection of La Porte Road and Dunstone Drive, about 2 1/2 miles (air) northeast of Honcut. 36 Comment
  RSA769605  Nemophila pedunculata L. Ahart, John Dittes 2009-3-20 15499 Butte Open area along 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
  SEINET10497063  Nemophila spatulata Mary Susan Taylor 1981-5-22 Taylor 3794 Butte T23N R5E nw/nw sec 30, Pulga quad. Ridge running SE from Flea Mt, both sides of Flea Mt Rd, ca. 1/4 air mi E of Flea Mt, ca. 5 air mi E of Magalia. Yellow Pine Forest; 4000 ft. 1219 Comment
  SEINET10869750  Nemophila spatulata Mary Susan Taylor 1979-3-31 Taylor 1967 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  SBBG127996  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte near the SW edge of the Golf Course, along trail from the end of Centennial Avenue to the foot bridge across Big Chico Crk, Bidwell Park 91 Comment
  SEINET3992254  Odontostomum hartwegii Rimo Bacigalupi, Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte Along Cohasset Road, 1 mi N. of Chico airport, drainage of Mud Creek 91 Comment
  SEINET3887700  Odontostomum hartwegii Unknown 1929-4-5 1130 Butte Canyon of Chico Creek.; 0 Comment
  CAS-BOT-BC171464  Oenothera campestris Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  SEINET10529930  Onychium densum Mary Susan Taylor 1976-4-24 Taylor 1075 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CAS-BOT-BC349983  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CHSC13881  Orobanche fasciculata Gregory Barnes 1969-4-16 7 Butte Table Mountain area. [JDJ note on specimen says 'Table Mt = 20N?. Section 10 not on Table Mt']. Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  JEPS119679  Orobanche uniflora Lowell Ahart 2012-5-4 17987 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA590215  Orthocarpus erianthus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7224 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET12318340  Orthocarpus erianthus S. C. Morey 1978-1 14 Butte Hwy 32, ca 9.1 mi E of junction with Hwy 99 at Chico 523 Comment
  CHSC58871  Osmorhiza chilensis Lowell Ahart 1992-7-29 6888 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  SEINET10454516  Osmorhiza chilensis Mary Susan Taylor 1978-7-19 Taylor 1733 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC99653  Oxalis oregana H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396794N. 57 Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  CHSC98571  Packera eurycephala var. lewisrosei L. P. Janeway; B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  UC1026483  Panicum acuminatum var. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 mi w Pulga; Sierra Nevada, w of Pulga 365 Comment
  CHSC38836  Panicum capillare Vernon Oswald 1983-8-9 972 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. In the bed of Chico Creek. 85 Comment
  JEPS120644  Panicum capillare Lowell Ahart 2013-11-13 19242 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  POM181470  Panicum capillare H. F. Copeland 1923-8-9 848 Butte Near Chico Comment
  UCD89498  Panicum capillare Beecher Crampton 1963-9-9 6883 Butte Honcut. Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  JEPS103328  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CHSC109159  Parentucellia viscosa Lowell Ahart 2012-5-12 18043 Butte Depression along the side of Guardian Trail, about 1/4 mile west of Highway 32, about 8-1/4 miles northeast of Chico, south part of Upper Bidwell Park. 382 Comment
  CHSC112455  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  SEINET10507543  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CDA42963  Paspalum urvillei L. Ahart 2013-7-1 18822 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CHSC43749  Pectiantia breweri Vernon Oswald 1987-6-29 3038 Butte Jones Meadow Rd. e of Inskip, 0.1 mi e of the intersection of the last section of road to Jones meadow. 1734 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  UCD123264  Pedicularis attollens H. F. Copeland 1930-7-24 s.n. Butte Jonesville. 1524 Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC4898  Pellaea andromedifolia Bill Wilson 1967-4-15 24 Butte Collected on N ridge above diversion dam on Big Chico Creek, Bidwell Park, Chico. 137 Comment
  UC122746  Pellaea andromedifolia Mrs. R. M. Austin April 1883 77 Butte Little Chico Canyon Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC80740  Pellaea mucronata Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  SEINET10529800  Pellaea mucronata Mary Susan Taylor 1980-7-20 Taylor 3193 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  RSA0041920  Penstemon Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UCD124220  Penstemon heterophyllus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC38714  Penstemon heterophyllus var. purdyi Vernon Oswald 1983-4-18 331 Butte Upper Bidwell Park, Chico, on the north rim at a level approximating the e end of Horseshoe Lake. 152 Comment
  CHSC42069  Penstemon heterophyllus var. purdyi Steve Holloway 1986-4-18 26 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  CHSC116588  Penstemon laetus var. leptosepalus L. P. Janeway 2015-7-20 11803 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC97014  Penstemon laetus var. leptosepalus L. P. Janeway 2007-6-19 9063 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River 556 Comment
  RSA4119  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  NY604510  Penstemon laetus var. leptosepalus A. A. Heller 1914-7-24 11589 Butte Forest Ranch 731.5 Comment
  CHSC69056  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte On the north side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  CHSC3994  Pentagramma triangularis A. K. Revard 1967-4-15 2 Butte 3 yd. On s of kirt roadside ca. 0.3 mi up from Cohasset Hwy., and ca. 3.3 mi n on Cohasset Hwy. From the Richardson Springs Rd. Comment
  CHSC111979  Pentagramma triangularis subsp. semipallida Lowell Ahart 2012-6-2 18136 Butte Along east side of a poor dirt road, about 100 yards north of Truex Rd., west of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. northwest of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC29723  Pentagramma triangularis subsp. semipallida J. D. Jokerst 1980-4-17 587 Butte Top of North Table Mt, northern most edge. 472 Comment
  CAS-BOT-BC77134  Pentagramma triangularis subsp. semipallida Lowell Ahart 1980-5-11 2243 Butte 1/4 mile S of Kunkle Res. 500 Comment
  CAS-BOT-BC77136  Pentagramma triangularis subsp. semipallida Lowell Ahart 1975-3-7 s.n. Butte Along road 1/2 mile E. of the Ponderosa Dam on the South Fork of the Feather River, north of Forbestown. Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  JEPS104146  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CHSC40228  Perideridia kelloggii Vernon Oswald 1985-6-22 1859 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft w of the turn-around at the end of Upper Park Rd. 207 Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  CHSC73912  Perideridia lemmonii B. Castro 1998-7-28 814 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near water-hole in center of meadow. 929 Comment
  CHSC64033  Perideridia parishii subsp. latifolia S. C. Morey 1983-9-17 750 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA459082  Perideridia parishii subsp. latifolia M. B. Dunkle 1931-8-12 2624 Butte Paradise Valley Comment
  CHSC66166  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1996-5-27 7672 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Large colonies in a ditch between Seven Mile Lane and Tract 6, Santuary II, just N of the equipment parking lot. 32 Comment
  CAS-BOT-BC418860  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 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-BC418861  Persicaria hydropiperoides Herbert L. Mason; Verne Grant 1946-8-14 13027 Butte Butte Sink. On Sacramento Outing Club Comment
  CAS-BOT-BC418952  Persicaria lapathifolia Lowell Ahart 1981-8-15 3041 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC42948  Persicaria lapathifolia Lowell Ahart 1987-7-3 5766 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of the Jarbo Gap. 271 Comment
  CHSC37072  Persicaria maculosa L. Ahart 1982-10-6 3845 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CHSC42489  Persicaria maculosa Lowell Ahart 1987-5-27 5706 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
  CAS-BOT-BC419179  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  CHSC108123  Persicaria punctata Lowell Ahart 2011-10-29 17724 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  HSC103921  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Lower Bidwell Park, Chico; gravel bar in the middle of Big Chico Creek, ~30 yds. E of the Freeway 66 Comment
  CAS-BOT-BC419319  Persicaria punctata Lowell Ahart 1982-8-22 3746 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  CHSC75265  Petrorhagia dubia Jennifer Slater 1997-4-20 26 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 67 Comment
  SEINET10537476  Petrorhagia velutina Mary Susan Taylor 1981-4-5 Taylor 3487 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  CHSC721  Phacelia egena P. Delaplane 1965-4-8 57 Butte Under overhang of cliff above creek on Richardson's Ranch. Ca 1.2 mi from Chico Municipal Airport on Richardson Springs Rd. Ca. 1/4 mi inside gate. 274 Comment
  CHSC11969  Phacelia heterophylla subsp. virgata E. B. Copeland 1930-7-13 446 Butte Jonesville. 1550 Comment
  CHSC46720  Phacelia imbricata R. A. Schlising 1982-7-28 4356 Butte Plumas National Forest, SE of Pulga and S of Coyote Gap Station. 838 Comment
  SD4076  Phacelia procera E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CHSC39121  Phacelia racemosa R. A. Schlising 1980-7-14 3908 Butte N part of county, 1.1 mi n of Snag Lake on the Skyway. 1822 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC117300  Phalaris arundinacea B. Castro; Melinda Carlson 2007-10-25 1677 Butte (Arroyo Chico land grant area). Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W. of River Road and north of the creek with surrounding disturbed riparian forest. 39 Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. 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
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  SEINET10716721  Phalaris paradoxa Lowell Ahart 1989-5-23 Ahart 6255 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile NW of Bangor, along edges of Avocado Road. Foothill woodland. Uncommon, growing on dry gravelly disturbed soil 213 Comment
  CHSC43205  Phleum pratense Robert Banchero 1981-7-19 612 Butte Big Crane Valley. Meadow. 1584 Comment
  UC1594573  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  UCR115104  Phleum pratense G. Fred Hrusa, T. D. Wilfred 1996-7-9 13147 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  UC600673  Phlox diffusa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  UCD102031  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magnolia, Sierra Nevada. 731 Comment
  RSA325114  Phoradendron bolleanum var. densum M. S. Taylor 1975-9-19 918 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  CHSC77448  Phoradendron densum Laura Bogni 1997-3-25 3 Butte Magalia grove; west side of Coutelenc Rd; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC33216  Phyla nodiflora var. rosea R. E. Preston 1981-6-19 97 Butte On bank of canal, ca. 0.8 km s of Headquarters, Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC117423  Physalis lancifolia Lowell Ahart 2016-5-30 20891 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC109764  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  JEPS99049  Pilularia americana Lowell Ahart 2002-4-14 9482 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET10530356  Pilularia americana Mary Susan Taylor 1980-3-28 Taylor 2396 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  RSA4589  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  UC398881  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville 2000 Comment
  SEINET10530811  Pinus ponderosa Mary Susan Taylor 1978-9-9 Taylor 1914 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC31515  Pinus sabiniana L. Ahart 1971-3-17 66 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC84187  Piperia elongata Lowell Ahart 2003-6-30 10323 Butte Near the small stream, on the southeast side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC109060  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC114949  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC103976  Plagiobothrys austiniae Lowell Ahart 2010-5-7 16609 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
  UCD80167  Plagiobothrys austiniae CNPS SN Foothill Team 2006-4-13 SNFN 0433 Butte CDFG Stone Ridge Ranch Wildlife Area, located in the upper middle portion of the Stone Ridge Ranch Wildlife Area, along the main creek running through the middle of the property (see map), about 150 m west of the power lines. 91 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC47998  Plagiobothrys canescens Vernon Oswald 1984-3-30 1112 Butte Upper Bidwell Park, Chico, about one-half way up the north slope at the n-e corner of Horseshoe Lake. 121 Comment
  SEINET12275924  Plagiobothrys fulvus Unknown s.n. Butte no further locality Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  JEPS77831 Image available Plagiobothrys glyptocarpus A. A. Heller 1914-5-16 11202 Butte 8 mi n Oroville Comment
  HSC100802  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte Bottom of small drainage, 100 yd. W of the fence, 0.5 mi. S of improved parking area and the Cherokee Rd., North Table Mountain, 5.5 (air) mi. NE of Oroville 399 Comment
  SBBG119952  Plagiobothrys greenei L. Ahart 2004-4-4 10713 Butte ca. 250 yards E of Wilber Rd, NE of the high hill crossed by Wilber Rd, ca. 3 air mi W of Thermalito 48 Comment
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 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
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along 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
  CHSC35054  Plagiobothrys leptocladus R. Schlising; R. Banchero 1981-4-20 4054 Butte NW of Oroville along Cottonwood Road, ca. 0.4 mile E of jct with Hwy 99. Roadside vernal pools. 41 Comment
  UC179566  Plagiobothrys stipitatus A. A. Heller 1914-4-24 11317 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CDA34703  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico Comment
  CHSC104000  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC39508  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 Butte Found on the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS98572  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte 5 mi (air) E of Oroville Dam (sides of old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of the cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CDA40654  Plagiobothrys stipitatus var. micranthus L. Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. Comment
  SBBG129105  Plagiobothrys stipitatus var. micranthus L. Ahart 2008-6-13 14824 Butte depression in a small meadow, bottom of an old gold mined area, ca. 350 yards SW of the cemetery, ca. 50 yards N of Oregon Gulch, ca. 10 mi (air) NE of Oroville 305 Comment
  UC179493  Plagiobothrys tenellus A. A. Heller 1914-5-8 11373 Butte Clear Creek-Paradise grade Comment
  CDA25096  Planodes virginica L. Ahart 2003-5-9 10123 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC48343  Planodes virginica Vernon Oswald 1985-3-17 1685 Butte Peter Ahart Ranch ca. 1.5 mi n of Honcut. In pasture ca. 300 ft e of the home. 33 Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  CHSC83950  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 43 Comment
  CHSC31163  Plantago erecta M. S. Taylor 1980-3-1 2353 Butte On bluffs overlooking Hamlin Canyon, ca. 1/2 mi se of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, ca 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca 2 mi N of Lake Concow, ca 20 air mi NE of Oroville. 854 Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 Comment
  JEPS98311  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  HSC95425  Plantago virginica L. Ahart 2000-5-13 8348 Butte Margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 air mi. SW of Oroville 43 Comment
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  SEINET12102784  Platystemon californicus Unknown 5 s.n. Butte Chico Comment
  SFV10384  Platystemon californicus M. L. Vincent 1964-4-9 539 Butte 1.5 miles from Clark Road turnoff on Alt. 40 North Fork. Comment
  SEINET10872920  Plectritis congesta subsp. brachystemon Mary Susan Taylor 1980-3-1 Taylor 2335 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CHSC24979  Plectritis macrocera J. Cox 1976-3-10 39 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CHSC30878  Plectritis macrocera J. D. Jokerst 1979-3-20 1146 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and the E edge of mt. 396 Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CAS-BOT-BC458149  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CHSC27233  Poa annua P. Moyer 1972-3-4 101 Butte 2nd and Ivy, building next to Chicano Center, side yard. 60 Comment
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  JEPS115963  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west 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
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC84204  Poa howellii Lowell Ahart 2003-6-30 10325 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 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
  CHSC47629  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 1425 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  CHSC773  Pogogyne zizyphoroides V. Holt 1935-5-7 Butte Centerville Rd. 60 Comment
  UC1303183  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  UC1130354  Polygala cornuta var. cornuta P. L. Johannsen 1936-7-29 973 Butte 1 mi n junction of Butte and Secret Creek; Paynes Creek Quadrangle Comment
  JEPS104470  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  CHSC113603  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CAS-BOT-BC109137  Polygonum bidwelliae C. R. Quick 1951-6-5 51 -87 Butte 5 miles northeast of Chico, Deer Creek road. Comment
  CHSC45459  Polygonum bidwelliae Lowell Ahart 1979-5-29 1896 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC60131  Polygonum bidwelliae B. Castro; L. P. Janeway 1992-5-9 451 Butte On SE-facing slope of unnamed canyon SE of Neal Road, on lava benches. 73 Comment
  SEINET10970707  Polygonum bidwelliae Lowell Ahart 1984-5-7 Ahart 4593 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  POM220117  Polygonum bistortoides H. F. Copeland 1928-8-21 432 Butte Near head of Willow Creek, Neighborhood of Jonesville. 1524 Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC94023  Polygonum douglasii subsp. spergulariiforme R. D. Fischer 2005-9-5 670 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek on the dry, bare, gravelly soil of an old road bed. 1737 Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 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
  RSA518701  Polygonum lapathifolium L. Ahart 1990-10-3 6613 Butte Willowweed, N side of the E Fork of Canyon Creek, below the high water line of Lake Oroville, 1/8 mile NE of the Canyon Creek Bridge across Lake Oroville. Comment
  SEINET260317  Polygonum lapathifolium Lowell Ahart 1986-11-9 5452 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam 1/4 mi ESW of Oroville 1/4 mi E of Larkin Rd 37 Comment
  CAS-BOT-BC414714  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  SEINET3399374 Image available Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  CAS-BOT-BC419813  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  UC204448  Polygonum phytolaccifolium A. A. Heller 1914-8-8 11672 Butte Jonesville; stream bank 1524 Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  CHSC39614  Polypodium calirhiza Lowell Ahart 1983-3-28 3911 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  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
  CDA14059  Polypodium glycyrrhiza G. F. Hrusa, T. D. Wilfred 1997-5-1 13706 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CAS-BOT-BC232965  Polypogon australis P. B. Kennedy 1915-5-15 s.n. Butte Biggs Comment
  CAS-BOT-BC233057  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC233060  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte Banks of N Honcut Creek, Peter Ahart Ranch, about 1.5 miles N and 3 miles E of Honcut 50 Comment
  CAS-BOT-BC233061  Polypogon interruptus John Thomas Howell 1951-8-19 s.n. Butte Near Pulga Comment
  RSA754944  Polypogon interruptus L. Ahart 2008-5-12 14741 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10507585  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4052 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET11688355  Polypogon monspeliensis Unknown 1985-1 4973 Butte W of Lunt Road ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  SEINET10508535  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4237 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
  SEINET10959317  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart s.n. Butte T22N R6E sw sec. 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest Comment
  JEPS122334  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS124286  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte About 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) north of De Sabla Reservoir. Comment
  CHSC28001  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte On se corner of Lake Madrone, at jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  CHSC34244  Polystichum munitum M. S. Taylor 1981-5-29 3810 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  SEINET10965417  Populus fremontii Mary Susan Taylor 1974-10-11 Taylor 326 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC99640  Populus fremontii subsp. fremontii H. Koeth 2007-4-12 Butte Chico State Campus, along Chico Creek riparian zone south of Plumas Hall. UTM 10 598699E 4397946N. 57 Comment
  UC600816  Porterella carnosula H. F. Copeland 1930-7-28 1314 Butte Jonesville Comment
  SEINET10460842  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Submerged or reaching surface of water in lily pond near Butte Creek House 1750 Comment
  SEINET8472199 Image available Potamogeton foliosus subsp. foliosus N. E. Brown, Charles C. Deam 1896-11-15 Butte Near Clear Creek Comment
  CHSC80726  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  RSA4631  Potamogeton illinoensis E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC65475  Potamogeton pusillus var. pusillus Vernon Oswald 1988-5-19 3327 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond in an old channel of the Sacramento River. 45 Comment
  SD2231  Potentilla andersonii E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC44165  Potentilla bruceae V. Oswald; L. Ahart 1988-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  SEINET7073611  Potentilla glandulosa A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC45607  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-28 2114 Butte Edge of ridge at Coyote Gap F.S. station. 1325 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CHSC54487  Potentilla glandulosa subsp. reflexa Vernon H. Oswald; Lowell Ahart 1991-7-15 4733 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 1.3 miles east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. Roadcut. 1097 Comment
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  CAS-BOT-BC539445  Potentilla gracilis var. fastigiata V. Oswald; L. Ahart 1988-7-26 3618 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC158499  Potentilla millefolia Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  UCR66579  Potentilla norvegica H. F. Copeland 1928-8-22 1066 Butte Jonesville 1524 Comment
  CHSC50562  Poteridium annuum Vernon Oswald; Lowell Ahart 1990-7-5 4347 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  SEINET10532862  Proboscidea louisianica subsp. louisianica Mary Susan Taylor 1978-9-8 Taylor 1902 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CDA6520  Proboscidea lutea E. Remmers 1961-7-5 Butte Oroville; 3350 Oro-Bangor Highway. 0 Comment
  CHSC38480  Prunella vulgaris var. lanceolata Vernon Oswald 1983-6-14 686 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. 207 Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC52216  Prunella vulgaris var. lanceolata L. P. Janeway 1988-7-2 2941 Butte Marsh/ mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  UCD80399  Prunella vulgaris var. lanceolata CNPS SN Foothill Team 2005-7-5 SNNR 0566 Butte CSUC, Big Chico Creek Ecological Reserve. 286 Comment
  CHSC52697  Prunus caroliniana L. P. Janeway 1990-3-25 3659 Butte Campus of California State University, Chico. S side of Big Chico Cr at bridge between Sylvester's Cafe-by-the-Creek and Holt Hall. 59 Comment
  CHSC110107  Prunus cerasifera L. P. Janeway 2012-3-6 10789 Butte Sacramento Valley. Oroville; south edge of the Feather River just northeast of Centennial Park. 42 Comment
  CHSC110109  Prunus cerasifera L. P. Janeway 2012-3-21 10800 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  JEPS120058  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC159929  Prunus emarginata A. A. Heller 1915-6-11 11962 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  UCD113182  Prunus emarginata H. F. Copeland 1929-6-10 s.n. Butte Jonesville. 1524 Comment
  CHSC99586  Prunus subcordata L. P. Janeway 2008-6-15 9407 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CAS-BOT-BC356391  Pseudognaphalium beneolens Lowell Ahart 1986-10-16 5404 Butte About 1 mile south-west of and near the Ponderosa Dam, about 3 miles north-west of Forbestown 457 Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  JEPS118066  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  JEPS120611  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CAS-BOT-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  JEPS87519  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CAS-BOT-BC361828  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS119988  Psilocarphus tenellus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC1618  Ptelea crenulata V. Holt 1933-5-1 Butte Forest Ranch. 548 Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  CHSC36068  Puccinellia simplex J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1545 Butte Grey Lodge east of dirt road z 1/4 mile S of Rutherford Road. Comment
  CHSC47637  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Near the dirt road, about 3/4 mile west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  CAS-BOT-BC462605  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 Butte Lily Pond located ca. 0.6 mi (air) W of Butter Creek House and 0.25 mi S of Humbug Rd., ca 2.75 mi (air) SE of Jonesville 1813 Comment
  UC5845  Quercus unknown 1890-11-20 Butte Chico Comment
  CHSC101305  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC1174971  Quercus berberidifolia P. C. Everett and E. K. Balls 1959-10-20 23907 Butte 8.6 mi ne Chico (along State Hwy 32, toward De Sabla) 487 Comment
  SEINET13953128 Image available Quercus berberidifolia T. A. Ranker, P. G. Trapp 1994-1 1619 Butte Pence Road, south of Paradise, T21N, R4E, S6 ca 1,300 ft (395m). 396 Comment
  CHSC46734  Quercus durata var. durata Lowell Ahart 1979-6-9 1926 Butte Along a dirt road about 1/2 mile north-east of Magalia. 640 Comment
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UCD169287  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8580 Butte Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC90047  Quercus kelloggii Rhonda Posey 1991-4-16 20 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  JEPS113214  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  SEINET10477841  Quercus wislizeni Mary Susan Taylor 1979-3-20 Taylor 1937 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
  CHSC94972  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS122194  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC62832  Ranunculus canus Ella Icard 1893-4-1 Butte Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC10560  Ranunculus hebecarpus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC1481  Ranunculus hebecarpus M. Roberson 1956-2-5 Butte SW Paradise, along Skyway. 426 Comment
  CHSC87438  Ranunculus hebecarpus R. D. Fischer 2004-3-31 102 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  UC204954  Ranunculus muricatus A. A. Heller 1914-4-17 11306 Butte 8 mi n Oroville Comment
  HSC31873  Ranunculus muricatus David Johnson 1974-4-20 44 Butte Table Mtn. Comment
  POM269273  Ranunculus muricatus Lyman Benson 1935-3-27 6361 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10965667  Ranunculus muricatus Mary Susan Taylor 1976-3-30 Taylor 1041 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  UC204949  Ranunculus occidentalis A. A. Heller 1914-6-22 11498 Butte Chico Meadows Sierra Nevada 1219 Comment
  UC478516  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  SEINET10535982  Ranunculus occidentalis var. eisenii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4155 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  CHSC31209  Ranunculus occidentalis var. occidentalis M. S. Taylor 1980-4-1 2426 Butte On bluffs above Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  POM196085  Ranunculus populago H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  CHSC11810  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  SD1767  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville, in wet woods 1500 Comment
  CHSC29815  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2259 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  RSA518945  Rhamnus tomentella subsp. tomentella J. T. Howell 1975-6-15 51073 Butte Butte Creek near Chico 6 Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  CHSC31679  Rhododendron occidentale L. Ahart 1977-4-16 1304 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC170519  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek Comment
  RSA718500  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Large soggy meadow opening along an upper Western branch of Keyser Creek; 0.7 km. southeast of Bald Mountain summit. 1681 Comment
  CHSC20960  Ribes roezlii M. S. Taylor 1975-9-12 909 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  CHSC4250  Ribes roezlii var. roezlii J. E. Bowlin 1967-3-24 33 Butte 0.3 mi NW of Cresta Powerhouse, Hwy 70. Comment
  CHSC36093  Ribes viscosissimum var. hallii R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4330 Butte NE part of county, N of Philbrook Res.; SE of Snow Mountain peak, on flanks of mountain. 2103 Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  CHSC51253  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-10-3 6612 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET10448490  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 Ahart 5040 Butte Lake Oroville, about 1/2 mile south-west of the Enter- prise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. Comment
  CHSC36686  Rorippa curvisiliqua var. orientalis R. E. Preston; L. E. Preston 1982-7-20 344 Butte Bed of stream; in meadow, ca. 1 mi s of Humbug Summit, ca. 4 1/2 miles ese of Jonesville. 1950 Comment
  CHSC4357  Rorippa nasturtium-aquaticum R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC35646  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 230 Butte On bank of irrigation ditch; along Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  CHSC82384  Rosa Lowell Ahart 2002-6-7 9709 Butte On the north banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CAS-BOT-BC146438  Rosa bridgesii Clarence R. Quick 1952-6-30 52 -100 Butte Ridge top, Big Bar Mt., east of Pulga 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
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC82390  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, and 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Along the road. 548 Comment
  HSC97124  Rosa woodsii subsp. ultramontana L. Ahart 2005-7-13 12144 Butte 20 yds. S of intersection of Forbestown Rd. and Black bart Rd., 3.5 air mi. SW of Forbestown, 12 air mi. E of Oroville 749 Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  CHSC47447  Rotala ramosior Lowell Ahart 1975-7-19 899 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC147095  Rubus John Thomas Howell 1959-9-20 34684 Butte Eastern outskirts of Oroville 60 Comment
  CDA3944  Rubus laciniatus L. Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  UC650296  Rubus laciniatus E. B. Copeland 1940-8-6 Butte Forest Ranch Comment
  UCD166757  Rubus praecox Marcel Rejmanek 2016-10-6 2159 Butte A ditch by the Highway 99, ca 1 km S of Nelson Ave. Comment
  SEINET10483603  Rubus procerus Mary Susan Taylor 1975-5-24 Taylor 771 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 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
  JEPS121924  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA754878  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC58270  Rumex dentatus Lowell Ahart 1992-5-23 6777 Butte Fallow rice field, on the west side of Goodspeed Watt Road, about 1/2 mile south of Butte City Highway. 30 Comment
  UC600492  Rumex salicifolius var. triangulivalvis H. F. Copeland 1932-8-17 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC434166  Rumex triangulivalvis John Thomas Howell 1962-6-16 37563 Butte Magalia 731 Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  JEPS122065  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  CHSC24811  Sagittaria montevidensis subsp. calycina E. L. Rilla 1976-9-18 26 Butte 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
  CHSC45314  Sagittaria sanfordii Vernon Oswald 1988-10-25 3713 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  SBBG126099  Salix exigua L. Ahart 2012-6-2 18139 Butte small stream, W of a poor dirt rd, ca 40 yards N of Truex Rd, W of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of the W Branch Bridge across Lake Oroville 286 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC107834  Salix gooddingii Gordon H. True; J. T. Howell; Lewis S. Rose 1968-6-12 4293 Butte Feather River Canyon near Pulga Bridge 609 Comment
  HSC102781  Salix gooddingii L. Ahart 2012-4-20 17893 Butte About 9 air miles NE of Chico, ~0.6 mi. west of Hwy. 32; ~100 yds. south of the intersection of South Rim Trail and Ten Mile House Road, ~50 yds. SW of table at old homestead; on east side of dam, east of South Rim Trail. 259 Comment
  CAS-BOT-BC125174  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CHSC108810  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  JEPS119584  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  UC446428  Salix ligulifolia E. B. Copeland 1931-6-18 Butte highest Willow Creek meadow Jonesville; , Willow Creek 1550 Comment
  CHSC21074  Salix lucida subsp. lasiandra M. S. Taylor 1975-10-3 942 Butte Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC129492  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte On a gravel bar 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
  POM107064  Salix melanopsis C. C. Bruce 1806 Butte Chico. Butte Creek. Comment
  SD932  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  SD923  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville, woods 1550 Comment
  CAS-BOT-BC221112  Salvia sonomensis E. B. Copeland 1899-5-1 s.n. Butte Chico Comment
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  CHSC66435  Sambucus mexicana Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .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. 28 Comment
  SEINET12319556  Sambucus mexicana Unknown 1977-1 25 Butte ca.2 mi NW of Chico on W side of Hwy99. Richardson Springs Quadrangle Comment
  CAS-BOT-BC235069  Sambucus racemosa var. racemosa V. Oswald; L. Ahart 1988-7-26 3625 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2042 Comment
  UC1562362  Sanguisorba annua Vernon Oswald and Lowell Ahart 1990-7-5 4347 Butte on n side of Humboldt Rd just w of Scout Rd. Butte Meadows (Butte Meadows) 1325 Comment
  UC566789  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3713 Butte ne of Oroville (Table Mountain, Cherokee Mine); Table Mountain, Cherokee Mine Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A 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
  CDA4889  Sapium sebiferum G. Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; Between Bidwell Canyon Drive and Lake Oroville, 440 feet south of Arroyo Drive and 2200 feet south-southwest of Bidwell Canyon Campground. Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  UC474270  Sarcodes sanguinea H. F. Copeland 1922-5-22 224 Butte Jonesville Comment
  SEINET10973486  Sarcodes sanguinea Mary Susan Taylor 1978-7-19 Taylor 1756 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC51841  Sceptridium multifidum L. P. Janeway 1986-9-1 1830 Butte East end of Philbrook Reservoir. 1691 Comment
  UCD49966  Schoenoplectus mucronatus W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  POM277045  Schoenoplectus mucronatus M. K. Bellue 1947-8-28 s.n. Butte Afton Road, northeast of Biggs Comment
  CHSC56802  Scirpus congdonii L. P. Janeway 1987-6-26 2309 Butte 2.5 mi east of Granite Ridge along road to Lynch and Logue Meadows; near where the road crosses Camp Creek. 1365 Comment
  CHSC56809  Scirpus congdonii L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2492 Butte Wet meadow along Skyway (Humbug Summit Road) ca 5 1/2 mi north of Inskip; at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  JEPS122026  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CAS-BOT-BC30731  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC35035  Scleranthus annuus subsp. annuus R. A. Schlising 1981-4-11 4024 Butte Along Hwy 32 S of Forest Ranch. Immediate roadside. Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CHSC44281  Scutellaria californica Vernon Oswald 1988-6-14 3382 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 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
  SFV5836  Scutellaria siphocampyloides M. L. Vincent 1968-6-5 768 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC24648  Scutellaria tuberosa S. Deaton 1976-4-14 16 Butte Small population 1 7/8 mi n of Feather Falls parking lot, n side of Falls trail. 853 Comment
  CHSC33588  Scutellaria tuberosa M. S. Taylor 1981-4-28 3565 Butte 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 on Hwy 70. ca. 23 air mi nw of Oroville. 929 Comment
  CHSC80571  Secale cereale Lowell Ahart 2001-5-10 8741 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC90602  Sedella pumila Andrew D. Lane 1984-4-19 4 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  POM264334  Sedella pumila H. L. Mason 1941-4-4 12409 Butte 3 miles S of Chico near junction of road to Paradise. 91 Comment
  SD67709  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville Road, ca. 7.0 miles from Chico. Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  JEPS115506  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 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
  CAS-BOT-BC62117  Selaginella hansenii Lowell Ahart 1961-3-3 s.n. Butte Salmon Hole, Chico 91 Comment
  CHSC76039  Senecio aronicoides G. F. Hrusa; T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada. At summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 750 Comment
  CDA13874  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-5-7 13732 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  CHSC71164  Senecio sylvaticus Lowell Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC364274  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  UC492742  Senecio triangularis E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC45011  Senecio vulgaris Lowell Ahart 1977-3-29 1233 Butte In the borrow area, about 5 air miles south-west of Oroville. 30 Comment
  SEINET10938098  Senecio vulgaris Mary Susan Taylor 1981-5-1 Taylor 3580 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC85  Sequoia sempervirens V. Holt 1958-2-26 Butte College Campus. 54 Comment
  SEINET10612346  Sequoia sempervirens Dudley 1904-1-21 DUDLEY 74 Butte Canado de Raymundo, Santa Cruz Mts. Plants of the Santa Cruz Pennisula. Herbarium of Leland Stanford Jr. University. 274 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
  CHSC78228  Setaria parviflora Lowell Ahart 2000-5-17 8365 Butte Near the south margin of the Thermalito Afterbay, north of the poor dirt road, about 1/10 mile north of the Richville Highway, about 1/2 mle east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  CAS-BOT-BC240124  Setaria pumila Lowell Ahart; Margit Epperson 1982-8-22 3749 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut 50 Comment
  CAS-BOT-BC240190  Setaria viridis John Thomas Howell 1975-6-15 51062 Butte Chico 60 Comment
  JEPS119816  Setaria viridis Lowell Ahart 2012-8-10 18416 Butte On the west northeast side of Bidwell Mansion, on the southwest side of the parking area, Bidwell Mansion, Chico. Comment
  SBBG128045  Setaria viridis L. Ahart 2010-9-24 17237 Butte irrigated, near the SW edgeof the Golf Course, ca. 10 yards S of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Crk, Bidwell Park 91 Comment
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC38661  Sherardia arvensis Vernon Oswald 1983-3-19 196 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 1000 feet W of the E end of Upper Park Rd. 207 Comment
  RSA754578  Sherardia arvensis L. Ahart 2009-4-17 15547 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  JEPS117311  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
  POM193377  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  POM319038  Sidalcea Patricia Wilder 1971-6-23 5196 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  CHSC13730  Sidalcea calycosa J. G. Moore 1970-5-27 153 Butte Honey Run Rd., 2 mi. w of Paradise. Comment
  RSA702150  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trial and Pine. Comment
  UC203663  Sidalcea calycosa subsp. calycosa A. A. Heller 1914-5-8 11381 Butte Comment
  JEPS127006  Sidalcea diploscypha Lowell Ahart 2016-5-24 20845 Butte About 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  RSA4420  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  POM282877  Sidalcea glaucescens Lyman Benson 1932-7-28 3960 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC23468  Sidalcea hartwegii J. R. Lee 1974-4-20 2 Butte On hill sw of Covered Bridge 7.2 mi from the Chico city limits on Honey Run Road. 137 Comment
  POM84282  Sidalcea hartwegii C. C. Bruce 1897-05 1873 Butte Forest- Ranch. Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  SEINET11985470  Sidalcea hartwegii Unknown 1978-1 18 Butte ca 0.5 mi E of Chico Municipal Airport & 1 mi SE of Mud Creek, 5 mi N of Chico 37 Comment
  CHSC44634  Sidalcea oregana subsp. spicata Lowell Ahart 1988-6-21 6049 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jargo Gap. 271 Comment
  UCD116832  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 s.n. Butte Jonesville. Comment
  CHSC101171  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC384465  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte 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
  RSA755037  Silene californica L. Ahart 2009-4-26 15624 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC31132  Silene laciniata subsp. californica Diane M. Reilly 1980-3-21 1 Butte On road cut, ne side of Dark Canyon Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 487 Comment
  CAS-BOT-BC389285  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville 1550 Comment
  CAS-BOT-BC181357  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS115613  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  POM107996  Sisyrinchium bellum C. C. Bruce 1897-04 2069 Butte Near Pentz Comment
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  NY201648  Smilax californica S. Bianco 1995-9-24 1031 Butte Between Ishi Trail and unnamed creek to the S 762 Comment
  CHSC42428  Solanum americanum Lowell Ahart 1987-5-27 5687 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
  JEPS124332  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET12319559  Solanum parishii T. R. Norton 1977-1 6 Butte ca 7.5 mi E of Chico, 3.5 mi SW of Paradise, S of Honey Run Rd 91 Comment
  POM69617  Solanum umbelliferum C. C. Bruce 1897-05 18721 Butte Little Chico. Comment
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  JEPS127010  Soliva sessilis Lowell Ahart 2016-5-24 20856 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
  CHSC107248  Sonchus asper subsp. asper Lowell Ahart 2011-6-3 17359 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Urban. 60 Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CDA42873  Sonchus oleraceus L. Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  SEINET2473449 Image available Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-1 15574 Butte Sacramento Valley; Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  UC1099803  Sparganium eurycarpum var. eurycarpum Herbert L. Mason and Verne Grant 1946-8-14 13016 Butte Butte Sink; Sacramento Outing Club Comment
  SEINET8408351  Spartium junceum Richard R. Halse 2006-8-3 6987 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road. 1000 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  CAS-BOT-BC147947  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock 762 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  SEINET10483626  Spiraea douglasii Lowell Ahart 1983-9-17 Ahart 4440 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC2431  Spiranthes porrifolia R. Carter 1965-6-15 232 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. along W side of road ca. 5' from edge of road, North Table Mountain ca. 5 mi. N of Oroville. 335 Comment
  SEINET10470127  Spiranthes porrifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 B Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  SEINET10836994  Stachys pycnantha Mary Susan Taylor Taylor 319 Butte 61 Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  CHSC52334  Stebbinsoseris heterocarpa J. D. Jokerst 1985-4-14 2233 Butte Top of North Table Mt, N of Cherokee Rd., near E edge of mesa. 396 Comment
  CAS-BOT-BC374773  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  UC1609309  Stellaria borealis subsp. sitchana Vernon H. Oswald and Lowell Ahart 1993-6-22 5558 Butte 0.5 mi nw Powellton Rd. (Head Dam Rd (120C), between Powellton and Clear Creek, n of De Sable) 1091 Comment
  CHSC61309  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC113500  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UCD99315  Stellaria longipes subsp. longipes E. B. Copeland Jun and Jul 1931 s.n. Butte Jonesville. 1500 Comment
  CHSC115276  Stellaria media Lowell Ahart 2015-10-16 20089 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north or Oroville. Foothill Woodland. 304 Comment
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CAS-BOT-BC395115  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the N Fork of the Feather River, a little N of the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC45567  Stellaria nitens Lowell Ahart 1973-3-14 170 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC395109  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  CAS-BOT-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  CHSC46557  Stellaria obtusa V. Oswald; L. Ahart 1989-7-21 3875 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC62532  Stephanomeria lactucina B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 151 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1676 Comment
  UC392186  Stephanomeria lactucina E. B. Copeland July 1929 Butte Jonesville Comment
  SD216  Stipa E. B. Copeland 1929-7-16 335 Butte Jonesville, scattered in low woods 1500 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10827386  Stipa lettermanii Edwin B. Copel 1929-7-16 Copeland 342 Butte Jonesville; bunch forming, on light soil in open brush, moist in spring. 1550 Comment
  UC725557  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  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
  CHSC33405  Streptanthus longisiliquus R. E. Preston 1981-7-8 100 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  CHSC39047  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte About 3 miles SW of Butte Meadows, along Humboldt Road.; at edge of road. 1450 Comment
  RSA731184  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte 0.8 km north of Robley Point. 939 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC95039  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte Northern High Sierra Nevada. West side of Coutelenc Road about 150 m north of Skyway; at 'Magalia Serpentine.' Thin soil over rocky serpentine; open ground around McNab Cypress and buckbrush. Petals reddish purple with white edges; calyx yellow-green. 713 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
  JEPS110269  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CAS-BOT-BC87434  Streptanthus polygaloides John Thomas Howell; Harvey Keith Wagnon 1980-5-26 53578 Butte Sierra Nevada. Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge. Comment
  CAS-BOT-BC87436  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  CAS-BOT-BC87510  Streptanthus tortuosus Lowell Ahart 1987-5-9 5597 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River, about 3 miles SW of Pulga. 365 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD119109  Styrax redivivus E. D. Phelps 1930-9-23 2151 Butte Pulga. Comment
  UC175550  Symphoricarpos mollis var. acutus A. A. Heller 1913-6-7 10802 Butte near Stirling 1074 Comment
  JEPS108935  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CHSC40468  Symphyotrichum chilense Lowell Ahart 1984-12-28 4833 Butte About 1/2 mile northeast of the West Branch Bridge across lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 400 Comment
  CHSC97760  Symphyotrichum chilense Lowell Ahart 2007-10-30 14507 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CHSC43240  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1987-9-24 5895 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  UC106147  Tauschia hartwegii Mrs. R. M. Austin Mar. 1896 Butte Little Chico Creek Comment
  SEINET10454608  Tauschia hartwegii Mary Susan Taylor 1975-3-3 Taylor 404 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CHSC96633  Tetrapteron graciliflorum Lowell Ahart 2007-3-28 13589 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  CHSC52196  Thalictrum fendleri var. polycarpum L. P. Janeway 1989-5-11 3232 Butte Along Deadwood Cr at jct of Concow and Jordan Hill Roads. 518 Comment
  CAS-BOT-BC399895  Thalictrum sparsiflorum A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  SJSU15298  Thysanocarpus curvipes Lisa Morton 2002-3-30 12 Butte Upper Bidwell Park, along N, Rim Trail at top of butte. 80 Comment
  CHSC83906  Thysanocarpus curvipes var. elegans Lowell Ahart 2003-4-10 10066 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  SEINET10907273  Thysanocarpus elegans Mary Susan Taylor 1980-4-16 Taylor 2486 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment