Search Results — 2000 specimen records retrieved (1625 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC600584  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  NY29501  Abies lowiana A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280.2 Comment
  SEINET10479965  Abutilon theophrasti Mary Susan Taylor 1978-9-8 Taylor 1905 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  JEPS115154  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 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 181 Comment
  CHSC99656  Acer negundo var. californicum H. Koeth 2007-4-12 Butte Chico State Campus, south of Holt Hall in riparian zone. 57 Comment
  SEINET10454009  Acer saccharinum Mary Susan Taylor 1975-5-6 Taylor 555 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC105812  Achillea millefolium Lowell Ahart 2010-9-21 17216 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
  SEINET5585614 Image available Achnatherum lettermanii E. B. Copeland 1929-1 342 Butte Jonesville 1550 Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CAS-BOT-BC216461  Achnatherum occidentale subsp. californicum Javier Penalosa 1962-6-18 2467 Butte Near confluence of French and Peavine Creeks 640 Comment
  CHSC49579  Achnatherum occidentale subsp. californicum Vernon Oswald 1985-7-2 1873 Butte Hwy 32 2.3 mi s of Lomo. 1133 Comment
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC113096  Acmispon americanus var. americanus Lowell Ahart 2013-11-18 19282 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  UCD103797  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11675 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC875  Acmispon brachycarpus A. Koopman 1929-3-28 Butte Hill by Country Club. 60 Comment
  CHSC65555  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-6 4775 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  UC398914  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CAS-BOT-BC412594  Aconogonon alaskanum A. A. Heller 1914-8-8 11672 Butte Jonesville 1524 Comment
  SEINET10573363  Actaea rubra R. M. Austin Austin 275 Butte Comment
  UC699686  Actaea rubra H. F. Copeland 1932-8-16 Butte Butte Creek Comment
  CHSC94350  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 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
  UC1481724  Adiantum capillus-veneris H. M. Hall 1914-7-7 9754 Butte Honey-Run Grade 304 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 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
  JEPS116129  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
  UC1481800  Adiantum jordanii Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  CAS-BOT-BC110727  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA1674  Aegilops triuncialis L. Ahart 2000-5-16 8357 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 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
  UCD51568  Aegilops triuncialis James Mallory 1967-6-14 269 Butte 10 miles s.e. Chico near jct. Pentz and Williams Road. Comment
  CHSC107098  Aesculus californica M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC41255  Agoseris glauca var. monticola S. C. Morey 1983-7-1 474 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC86134  Agoseris grandiflora John Dittes; Josephine Guardino 2002-6-21 619 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  JEPS115882  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  POM35003  Agoseris heterophylla var. heterophylla C. C. Bruce 1897-04 s.n. Butte Near Chico Comment
  CAS-BOT-BC447795  Agrimonia gryposepala Clarence Quick 1940-7-20 40 -96 Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout. 2-3 miles towards Brush Creek Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET10970336  Agrimonia gryposepala Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4423 Butte Meadow at the headwaters of Concow Creek, ca 4 miles north of Concow. From a single localized colony near the bank of the creek traversing the meadow. 1095 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC49500  Agrostis capillaris Vernon Oswald 1984-7-31 1640 Butte Humboldt R. at the Willow Creek-Colby Creek bridge. 1487 Comment
  JEPS98555  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S and N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CAS-BOT-BC127366  Agrostis exarata Lowell Ahart 1981-7-7 2916 Butte Sierra Nevada. Bottom of dry stream bed, ca. 1 mile south of the Oroville Forbestown Road on the Hureleton Sweeds Flat Road. 600 Comment
  CAS-BOT-BC127375  Agrostis exarata Lowell Ahart 1982-9-13 3828 Butte Along a small stream that flows into Pinkard Creek, below the dirt road, which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CHSC34033  Agrostis exarata L. Ahart 1981-7-7 2916 Butte Ca. 1 mi s of the Oroville Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  UC1562417  Agrostis exarata Lowell Ahart 1990-5-21 6475 Butte 1/4 mi s, 4/10 mi w of Pacific Heights Road, 4 1/2 mi sw of Oroville Feather River 30 Comment
  UC1563282  Agrostis exarata Lowell Ahart 1990-9-30 6608 Butte about 1/8 mi ne Canyon Creek Bridge across Lake Oroville (below the high water line of Lake Oroville); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC36527  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  CHSC40448  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  UC1260480  Agrostis hendersonii Lowell Ahart with Sue Taylor, Jim Jokerst, et al. 1980-7-20 2473 Butte ne of Oroville (w side of Big Bald Rock); Big Bald Rock 1100 Comment
  CAS-BOT-BC138849  Agrostis microphylla Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC42997  Agrostis scabra Lowell Ahart 1987-7-8 5815 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  CHSC44176  Agrostis variabilis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC56620  Aira caryophyllea J. D. Prouty 1980-3-7 80 .35 Butte Ca 1 mi east of Palermo-Honcut Hwy, 50 ft south of Melody Lane. 48 Comment
  CHSC92548  Aira caryophyllea L. P. Janeway 2005-3-10 8345 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CHSC116575  Allium amplectens B. Castro; Robin Carter 2016-3-30 2127 Butte Sacramento Valley. CA1.6 air mi E of Hwy 99, 2 mi S of Hwy 162E and 1.5 mi SSW of the Oroville Airport, off N edge of SE ortion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC2057  Allium amplectens N. Maxwell 1929-4-20 Butte Paradise. 487 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  SEINET257320  Allium amplectens J. L. Reveal 1988-6-3 7005 Butte Paradise 0.2 mi S of Bennett Rd along South Libby Rd onto N end of Morgan Ridge 518 Comment
  UC767479  Allium amplectens R. F. Hoover 1938-4-24 3246 Butte 3 mi n Chico Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  CAS-BOT-BC465445  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  CDA43368  Allium cepa D. G. Kelch 2012-9-19 12 .357a Butte Oroville, immediately west of sewage treatment plant. Comment
  CAS-BOT-BC466713  Allium cratericola Elizabeth McClintock 1965-4-4 s.n. Butte Table Mountain east of Chico Comment
  CAS-BOT-BC466715  Allium cratericola Gladys L. Smith 1975-4-8 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  SEINET12047242  Allium cratericola Unknown 1978-1 2 Butte 15 m W of Cherokee Rd., 4.8 km S of Cherokee on Cherokee Rd Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CHSC28049  Allium jepsonii J. D. Jokerst 1978-6-22 151 Butte T22N, R4E, sect. 17. [no other locality information given] Comment
  CHSC47048  Allium jepsonii R. A. Schlising; P. Broyles 1988-7-9 4582 Butte E of Paradise and Magalia, N of Oroville and Jarbo Gap. 929 Comment
  CHSC86446  Allium jepsonii Jenny Marr 1993-7-1 99 Butte Northern Sierra Nevada, between Concow and Pulga, on a serpentine rockoutcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC36911  Allium obtusum var. obtusum R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4310 Butte NE part of county, E of Inskip and SE of Jones Meadows. 1767 Comment
  CAS-BOT-BC132070  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. SE. of Oroville on road to Wyandotte 121 Comment
  CAS-BOT-BC274  Allocarya glyptocarpa Amos Arthur Heller 1914-3-16 11202 Butte Hills 8 miles N of Oroville Comment
  CHSC62573  Allophyllum divaricatum L. P. Janeway 1993-6-10 4379 Butte Plumas National Forest. Southwest side of Watson Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  SEINET10496947  Allophyllum integrifolium Lowell Ahart 1983-8-16 Ahart 4298 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  JEPS114590  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
  RSA299120  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC137941  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte Sierra Nevada. About 0.5 mile northeast of Highway 99 and Pentz Road. 65 Comment
  CHSC65416  Amaranthus Vernon Oswald 1988-8-8 3685 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between hwy 149 and Dry Creek. 57 Comment
  JEPS113490  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CHSC50984  Amaranthus californicus Lowell Ahart 1990-8-15 6593 Butte About 1/4 mile north-west of the Enterprise Bridge across Lake Oroville, east of the Enterprise Boat Launch Area, along a small wash, below the high water line of Lake Oroville. 228 Comment
  CDA3300  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte 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. Comment
  CHSC42942  Amaranthus deflexus Lowell Ahart 1987-7-19 5842 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC95142  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Paradise, CA. Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street. 365 Comment
  JEPS102422  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the ''Deer Pen'', Chico. 60 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1562346  Ambrosia artemisiifolia Vernon Oswald and Lowell Ahart 1990-7-31 4425 Butte on n side of Concow Reservoir ((Camelot Estates Subdivision)) 621 Comment
  CHSC38320  Ambrosia psilostachya Vernon Oswald 1983-8-27 1033 Butte Upper Bidwell Park, Chico, between the parking areas at Bear Hole and Diversion Dam. 121 Comment
  CHSC46399  Amelanchier pallida Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC60585  Amelanchier utahensis Vernon H. Oswald; Lowell Ahart 1993-4-19 5285 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Between creek and the lookout. 774 Comment
  UC726481  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte near Stirling (Feather River); Feather River 975 Comment
  CHSC113529  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte Near a small drainage, 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. 88 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC46467  Ammi visnaga Vernon Oswald 1989-6-26 3815 Butte Pennington Rd along east boundary of Gray Lodge Wildlife Area, just s of West Evans Reimer Rd. 21 Comment
  JEPS119625  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  UCD169263  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile Road House, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  CHSC108839  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. 154 Comment
  CHSC90577  Amsinckia intermedia Andy Winkler 1980-4-15 3 Butte About 1/2 mi east of the Hwy 99 Butte Creek bridge, on the north side of Butte Creek. Comment
  JEPS24908  Amsinckia intermedia A. A. Heller 1914-4-21 11310 Butte Chico 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
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  UCD119273  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte Western section of town near the road above the gorge, Paradise. Comment
  CHSC60659  Amsinckia lycopsoides Vernon H. Oswald 1993-4-11 5254 Butte Cana-Pine Creek Rd. bordering the W side of the Wurlitzer Unit of Vina Plains Preserve, near the NW corner of Butte County. 57 Comment
  CHSC96552  Amsinckia lycopsoides L. P. Janeway 2006-4-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC10561  Anagallis arvensis Lowell Ahart 1970-4-22 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC78947  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC97535  Andropogon virginicus var. virginicus L. P. Janeway 2007-8-6 9154 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. 776 Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CHSC21146  Anthemis cotula M. S. Taylor 1975-10-3 939 Butte On sandbar in Sacramento River, ca. 5 mi W of Chico. 36 Comment
  SFV11430  Anthemis cotula M. L. Vincent 1968-6-5 771 A Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC97232  Anthoxanthum odoratum Lowell Ahart 2007-6-1 13968 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CDA14338  Anthriscus caucalis Harrie D. Riley 1995-4-19 Butte Muir and Kennedy avenues, Chico. 0 Comment
  CDA5612  Anthriscus caucalis L. Ahart 2005-4-18 11729 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
  CHSC1951  Anthriscus caucalis A. Goekler 1929-4-25 Butte Chico. 57 Comment
  RSA715610  Anthriscus caucalis L. Ahart 2005-4-18 11729 Butte 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 southwest of Chico 26 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 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
  CHSC38576  Aphyllon purpureum Vernon Oswald 1983-3-16 191 Butte Upper Bidwell Park, Chico, ca. 100 ft n of South Rim Trail and 1000 ft w of the power lines. 128 Comment
  CHSC52189  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 296 Butte Ca. 2.0 mi. E of Brush Creek near Indian Creek. 856 Comment
  CHSC52458  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 225 Butte E. of Powellton. 1402 Comment
  SEINET10480703  Arabis Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 82 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  CHSC32828  Arbutus menziesii W. Michael Foster 1981-4-24 10 Butte Along both sides of Hwy 70, ca. 2 mi NW of Jarbo Gap and ca. 20 mi N of Oroville. 609 Comment
  CHSC41895  Arbutus menziesii Lowell Ahart 1974-12-5 683 Butte Along the dirt road near Pinkard Creek, about 2 miles west of the Sly Creek Dam. 914 Comment
  CHSC90566  Arbutus menziesii Richard Steward 1988-4-21 5 Butte Ca. .6 mi ne of De Sabla General Store. 792 Comment
  CHSC93516  Arbutus menziesii L. P. Janeway; B. Castro, Ana Castro Instone 2006-4-23 8559 Butte Northern Sierra Nevada Foothills. North Table Mountain; near head of Campbell Creek and Beatson Hollow, about 150 m south of Phantom Falls. On steep west-facing slope between the top tablelands and the bottom of the Hollow. 375 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 Comment
  CHSC45039  Arceuthobium californicum Lowell Ahart 1988-9-4 6173 Butte Host trees were on the north side of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 miles south-west of Bald Mountain. 1005 Comment
  CHSC19715  Arceuthobium occidentale Lowell Ahart 1974-11-4 670 Butte Pine tree was growing along the edge of Noth Honcut Creek. Peter Ahart Ranch, Honcut, Calif. 45 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
  RSA632991  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27463 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633009  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27465 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52240  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51562 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  UC1303072  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte about a mi below Ten Mile House (e of Chico) Comment
  CAS-BOT-BC24299  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725980  Arctostaphylos mewukka A. A. Heller 1942-1-18 16350 Butte Pentz-Magaia Rd one mi e Bille Road; Paradise Comment
  UC726307  Arctostaphylos mewukka A. A. Heller 1942-2-7 16362 Butte along the Wagstaff rd near junction with the Neal Road; Paradise Comment
  UCD52377  Arctostaphylos mewukka L. Ahart 1985-11-17 4840 Butte Near Kunkle Reservoir; about 2 miles south of Paradise. 518 Comment
  CAS-BOT-BC38555  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51562 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  JEPS82683  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte 2 mi n Magalia Comment
  JEPS84879  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte Conteleve Road e Paradise 762 Comment
  CAS-BOT-BC45569  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  UCD51943  Arctostaphylos truei John Thomas Howell 1976-4-2 51569 Butte Transition Life Zone, Paradise, Butte County. 609 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  RSA129286  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 miles S. of Wyandolte. Smartsville. 152 Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  JEPS94665  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET12088732  Aristolochia californica K. E. Warwick 1978-1 10 Butte 30 m. of Butte Creek at Covered Bridge, 10.2 km ESE of Chico Comment
  UC177602  Arnica dealbata H. M. Hall July 1914 9814 Butte near Jonesville (n Butte County); Sierra Nevada Mountains 1615 Comment
  CHSC103160  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC4692  Asclepias eriocarpa R. Carter 1966-7-6 465 Butte Found ca. 7 mi. E of Oroville on e side of Feathervale .25 mi. S of intersection with Wyandotte-LaPorte Rd. 243 Comment
  CHSC38264  Asclepias fascicularis Vernon Oswald 1983-6-20 719 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 128 Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  CAS-BOT-BC68880  Aspidotis californica M. S. Taylor; T. Devine; M. Merryman 1981-2-11 3381 Butte Big Bend Mt. Quad. ca. 100 ft. E of Lumpin Rd. on N slope above Macabes Creek, ca. 2 mi. N of jct Lumpkin Rd. 457 Comment
  CAS-BOT-BC68882  Aspidotis californica Leslie Steidl 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CAS-BOT-BC65913  Aspidotis densa John Thomas Howell; Gordon H. True 1969-4-9 45491 Butte Magalia 701 Comment
  CHSC28625  Aspidotis densa M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC32620  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3459 Butte End of Spur rd, ca. 3/4 mi se of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 4 mi ne of its jct with Hwy 70 at Jarbo Gap, ca. 19 air mi n of Oroville. 914 Comment
  CHSC96826  Aspidotis densa Lowell Ahart 2007-5-29 13966 Butte On the east side of Bald Rock Dome, Dome Trail at the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  POM196124  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET10474430  Aster chilensis subsp. ascendens Mary Susan Taylor 1978-9-9 Taylor 1911 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  SEINET10452225  Astragalus gambelianus Lowell Ahart 1985-3-22 Ahart 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  RSA0003125  Astragalus tener var. bruceae C. C. Bruce 1898-03 2430 Butte Plains [no specific locality given] Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  JEPS117932  Athyrium filix-femina L. P. Janeway 2008-8-10 9538 Butte along Four trees Road crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70 Northern High Sierra Nevada 823 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  SEINET10532293  Athyrium filix-femina var. californicum Mary Susan Taylor 1977-7-15 Taylor 1422 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CAS-BOT-BC66022  Athyrium filix-femina var. cyclosorum H. F. Copeland 1920-8-2 199 Butte by Butte Creek 1676 Comment
  CHSC84211  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  CHSC38410  Athysanus pusillus Vernon Oswald 1983-2-14 76 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  CAS-BOT-BC17452  Athysanus pusillus Lowell Ahart 1987-5-22 5665 Butte About 0.25 mile southeast of Lumpkin Ridge Road, about 1.5 mile east of Camp 18, aobut 8 miles east of Feather Falls. 1280 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 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
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 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
  CHSC45553  Atriplex serenana Lowell Ahart 1977-7-24 1493 Butte On the Gray Lodge Waterfowl Management Area, about 12 miles southwest of Gridley. 30 Comment
  UCD97780  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge; south-west of Gridley. 35 Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC46432  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC38789  Avena fatua Vernon Oswald 1983-3-14 186 Butte Upper Bidwell Park, Chico, on the north slope near rim rock on the level of the e end of Horseshoe L. 152 Comment
  CHSC39420  Avena fatua J. D. Jokerst 1984-4-7 1968 Butte Along the edge of Cherokee Rd. Top of North Table Mountain at the mesa's east edge. Comment
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  SEINET10530429  Azolla mexicana Mary Susan Taylor 1982-4-28 Taylor 4370 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC103016  Azolla microphylla Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS120948  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 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
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC56747  Baccharis salicifolia J. D. Jokerst 1980-4-15 Butte Junction of Honey Run Road and Butte Creek. Comment
  POM180885  Bacopa rotundifolia H. F. Copeland 1923-7-9 843 Butte Nelson. Comment
  CHSC48314  Barbarea orthoceras Vernon Oswald 1984-5-9 1180 Butte Near Camp Lassen, Chico Meadows on Scout Rd ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC479  Barbarea verna G. Spurlock 1935-5-15 Butte Chico. 57 Comment
  CHSC109109  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-3 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  SEINET3449099  Bergia texana Unknown 2002-12-6 10021 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 20 Comment
  CAS-BOT-BC169392  Betula W. R. Dudley 1899-8-1 s.n. Butte Upper Sacramento River Comment
  CAS-BOT-BC102070  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CHSC26659  Bidens frondosa M. S. Taylor 1977-8-16 1503 Butte In Clear Creek, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC32369  Bidens frondosa J. D. Jokerst 1979-11-13 1229 Butte Table Mountain. Top of North Table Mountain, ca. 100 m N of Cherokee Rd at the E edge of the mountain. 396 Comment
  SBBG128778  Bidens frondosa L. Ahart 2013-11-17 19259 Butte sides of McCabe Crk, below the high water line of Lake Oroville, ca. 5/8 mi SW of Enterprise Bridge across Lake Oroville 245 Comment
  CHSC285  Blennosperma nanum J. Turner 1930-4-18 Butte Chico near Plant Gardens. 54 Comment
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC38019  Boechera platysperma R. A. Schlising; K. Tarp 1982-7-24 4347 Butte Extreme e Butte County, e of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 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
  POM46120  Boisduvalia macrantha C. C. Bruce 1897-06 2005 Butte [Unspecified] Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  CAS-BOT-BC417632  Boykinia major Lowell Ahart 1985-7-9 5114 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC104858  Brachypodium distachyon Lowell Ahart 2010-6-20 16814 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcutt Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC112930  Brachypodium distachyon B. Castro 2012-5-9 1919 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.4 mi N of jcn of Hwy 99/Hwy 162W and ca 0.4 mi S of screened CDFG fishery facility. 39 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  CHSC98970  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10896164  Brodiaea A. Arthur Heller 1914-4-13 Heller 11285 Butte Chico-Oroville road 11 miles from Chico. Comment
  SEINET10472610  Brodiaea californica Lowell Ahart 1985-6-30 Ahart 5084 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC38764  Brodiaea californica var. californica Vernon Oswald 1983-5-9 460 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  SEINET8193961  Brodiaea congesta M. J. Williams, W. Roderick 1984-5-25 84- 22 -8 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CHSC45016  Brodiaea elegans Diane Mastalir 1988-4-25 19 Butte Bidwell Park Chico, 1.6 mi ne of Wildwood Ave on Upper Park Rd., 0.3 mi nw. 109 Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CDA39462  Brodiaea minor L. P. Janeway 2000-5-14 6721 Butte Sacramento Valley; East side of Pine Creek Road 0.3 mile north of Pine Creek Comment
  HSC43122  Brodiaea minor Maralyn O'Meara 1974-4-20 275 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  SEINET10508554  Bromus alopecuros Lowell Ahart 1985-5-9 Ahart 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  JEPS106169  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC4353  Bromus catharticus M. Hillier 1966-5-30 Butte By drive on the corner of W Sacramento Ave. and the Esplanade. Chico. Comment
  CDA42866  Bromus hordeaceus L. Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC36546  Bromus hordeaceus L. Ahart 1982-6-4 3549 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS116101  Bromus hordeaceus Lowell Ahart 2009-5-8 15668 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC97036  Bromus inermis subsp. inermis L. P. Janeway 2007-7-16 9118 Butte Northern High Sierra Nevada. Plumas National Forest; south of Road 21N25 in the southeastern corner of Watson Ridge, 0.7 km north of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1125 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 Comment
  SEINET10869077  Bromus laevipes Lowell Ahart 1983-6-15 Ahart 4056 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CHSC35697  Bromus madritensis subsp. madritensis J. D. Jokerst 1982-5-1 1552 Butte Top of North Table Mountain, ca 1/2 mi N of Cherokee Rd. at the mesa's E edge. Comment
  JEPS117882  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC30695  Bromus madritensis subsp. rubens M. S. Taylor 1980-5-27 2674 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET3412001 Image available Bromus madritensis subsp. rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast 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
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  HSC93423  Bromus sterilis L. Ahart 1995-5-30 7576 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  CAS-BOT-BC161505  Bromus tectorum Lowell Ahart 1987-5-6 5552 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10524080  Bromus vulgaris Edwin B. Copel 1929-7-22 Copeland 336 Butte Jonesville. In brush and low woods. 1500 Comment
  CHSC42841  Bulbostylis capillaris Lowell Ahart 1980-8-20 2475 Butte Along Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC78274  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SD131006  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte At Big Bald Rock. 1100 Comment
  CHSC50851  Calamagrostis canadensis Vernon Oswald 1990-7-23 4382 Butte Meadow at headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. Along the northwest edge of the meadow. 1920 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC113215  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 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
  CHSC10650  Calochortus albus Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  UC398903  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte above Jonesville 2000 Comment
  CAS-BOT-BC491846  Calochortus luteus Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  SEINET7073601  Calochortus monophyllus A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  SEINET10469602  Calochortus monophyllus Lowell Ahart 1985-3-22 Ahart 4849 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  UCD14305  Calochortus monophyllus Maura Cullinene 1983-4-16 4 Butte from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit north-east, turn right on Richardson's Springs Road, drive for 3 miles to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17. 304 Comment
  POM109549  Calochortus nudus C. C. Bruce 1897-06 54 Butte [no locality information provided] Comment
  UC119782  Calochortus tolmiei Dr. E. B. Copeland 1903-4-10 3023 Butte Chico Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC175757  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadows by North Willow Creek 1550 Comment
  POM219011  Caltha leptosepala E. B. Copeland 1930-06 s.n. Butte Jonesville. 1500 Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 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
  UC194200  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte 5 mi e of Chico; Little Chico Creek 152 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
  CAS-BOT-BC106079  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte Jarbo Pass on the Feather river Highway east of Oroville 609 Comment
  CHSC287  Calycadenia oppositifolia B. Richardson 1929-5-20 Butte Butte Meadows. Comment
  CHSC76828  Calycadenia oppositifolia L. P. Janeway 1999-11-15 6628 Butte Northern Sierra Nevada foothills. Between Nelson Bar Road and Lake Oroville, 0.25 mi north-northwest of Lime Saddle. 281 Comment
  CHSC92149  Calycadenia oppositifolia J. Molter 2005-6-3 891 B Butte Found 10' to 20' SW of Lunt Road, approx. 1/4 mile NW of Hwy. 70 on serpentine barren that parallels the road. 481 Comment
  JEPS20316  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e Pentz; West Branch of North Fork of Feather River 182 Comment
  POM31432  Calycadenia oppositifolia Mrs. R. M. Austin 1883-05 s.n. Butte Chico Creek Comment
  RSA107429  Calycadenia oppositifolia L. S. Rose 1955-6-15 s.n. Butte 3 miles E of Pentz, Canyon of W Branch of N Fork of Feather River 183 Comment
  SBBG7833  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 mi N of Chico on Richardson Springs Rd Comment
  UCD129785  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mile west of Paradise. South side of Chico-Paradise Hwy. Comment
  CAS-BOT-BC270735  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile N of Broyles Road Comment
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  UC725412  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  CHSC12007  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville. 1500 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  SEINET10496588  Calystegia occidentalis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4071 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CDA13250  Calystegia occidentalis subsp. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-8 13098 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  POM38436  Camissonia graciliflora C. C. Bruce 1897-05 1957 Butte Near Chico. Comment
  RSA456171  Campanula prenanthoides H. F. Copeland 599 Butte Jonesville. 1524 Comment
  SEINET10462920  Campanula prenanthoides Edwin B. Copel 1930-8-4 Copeland 482 Butte JONESVILLE, SOIL EXPOSED BY SLIDE, IN SHADE 1500 Comment
  SEINET10463038  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte On road from Prattville to Chieo, near Chieo 914 Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  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
  CHSC34534  Capsella bursa-pastoris R. E. Preston 1982-2-18 172 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC35642  Capsella bursa-pastoris R. E. Preston 1982-4-7 226 Butte At edge of almond orchard; nw corner jct Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  CHSC486  Capsella bursa-pastoris V. Holt 1935-3-20 Butte Chico. 57 Comment
  CHSC116961  Cardamine californica Matthew Forster 2013-2-27 Butte Found on Yahi trail in Riparian Community along Big Chico Creek. 90 Comment
  CHSC38050  Cardamine oligosperma R. E. Preston 1983-2-7 379 Butte N side of McCabe's Creek. 371 Comment
  CHSC83932  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7740 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. 329 Comment
  UC207729  Cardamine pensylvanica A. A. Heller 1914-4-14 11290 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC113283  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CAS-BOT-BC17630  Carex alma John Thomas Howell 1955-6-15 30473 Butte Paradise. 518 Comment
  CAS-BOT-BC17902  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CAS-BOT-BC17906  Carex angustata L. P. Janeway 1988-6-25 2896 Butte Meadow adjacent to Bull Hill Road 2.6 miles from the Skyway. 1508 Comment
  CHSC84927  Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CAS-BOT-BC18050  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1813 Butte Northeast side of Philbrook Reservoir at PG&E picnic area. 1691 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CAS-BOT-BC18056  Carex athrostachya Lowell Ahart 1981-8-15 3044 Butte Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  UC600699  Carex aurea H. F. Copeland 1920-8-1 171 Butte Jonesville Comment
  CHSC47138  Carex barbarae L. P. Janeway; V. H. Oswald 1989-4-17 3220 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  UC1755303  Carex brainerdii Dean W. Taylor 2004-7-21 19198 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  CAS-BOT-BC34372  Carex cusickii H. F. Copeland 1935-7-28 1500 Butte Jonesville. 1500 Comment
  CHSC44104  Carex cusickii L. P. Janeway 1987-6-26 2325 Butte Open mdw just NW of Logue Mdws along road to Lynch Mdws. 1325 Comment
  CHSC50351  Carex cyrtostachya Vernon Oswald 1990-5-14 4208 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  JEPS113274  Carex cyrtostachya Lowell Ahart 2007-5-22 13912 Butte Along a small wash, on the northwest edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC31777  Carex cyrtostachya Lowell Ahart 1988-6-29 6108 Butte Along Bean Creek, at the bridge on Bean Creek Road, ca 1/2 mi SW of Johnson Ranch, 609 Comment
  CHSC114423  Carex davyi Don Lepley 2012-7-24 Butte About nine air miles east of Butte Meadows and five air miles southeast of the top of Humboldt Peak, in the uppermost course of WillowCreek. UTM Coordinates: 10T 638150 E x 4439045 N. 1926 Comment
  CAS-BOT-BC34955  Carex densa L. P. Janeway 1988-6-25 2855 Butte Ridgetop above Clark Road (Hwy 191) 4.9 miles N of Durham-Pentz Road. 381 Comment
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  CHSC65471  Carex densa Vernon Oswald 1983-3-9 143 Butte Upper Bidwell Park, Chico, beside the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. 115 Comment
  CHSC84735  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 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
  CDA42884  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC97410  Carex echinata subsp. echinata Robert Fischer 2006-6-17 1029 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC31139  Carex feta L. Ahart 1980-7-4 2464 Butte Small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC92414  Carex feta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10502 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS84) 1551 Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC45054  Carex hirtissima Vernon Oswald 1987-5-28 2937 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  CHSC52911  Carex integra L. P. Janeway 1987-7-4 2429 Butte Dry open meadow near a seepy area along the road to Jones Meadow, 9.6 mi from Inskip; NW-facing slopes above Last Chance Cr. 1676 Comment
  SEINET12649502 Image available Carex inversa Peter F. Zika 2010-1 24827 Butte 65 Comment
  CHSC105805  Carex jonesii Lowell Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  JEPS105629  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring 1519 Comment
  SEINET10710015  Carex jonesii Vernon H. Oswald, Lowell Ahart 1988-6-17 Oswald 3404 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of a tufted sedge growing along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1067 Comment
  HSC87071  Carex laeviculmis L. P. Janeway 1987-6-13 2203 Butte Edge of creek at road crossing, road to Mayaro, 1 mi. E of Concow Rd. 1107 Comment
  CHSC112784  Carex lemmonii Lowell Ahart 2013-5-27 18712 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  CHSC44935  Carex lemmonii Lowell Ahart 1988-7-31 6145 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  SEINET7483992 Image available Carex lemmonii E. B. Copeland 1929-1 610 Butte Jonesville 1500 Comment
  SEINET7899355 Image available Carex lemmonii H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  SEINET8055537 Image available Carex multicaulis M. S. Taylor 1981-5-13 3696 Butte Pulga SE quad; E side of 23N15.5, ca. 1 mi S of jct. with Four Trees Rd., ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy Comment
  CAS-BOT-BC21235  Carex multicostata V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mountain Region located 6 air miles SE of Jonesville. North brow of a ridge running eastward from Snow Mountain. 2072 Comment
  CHSC33861  Carex nudata J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 560 Butte Rocky Honcut Creek (upper) ca 100 ft. N of it's jct with Sweedes Flat Rd. (E of Rackerby, 10 mi SE of Oroville). Comment
  CHSC52246  Carex nudata L. P. Janeway; Vern Oswald 1989-4-17 3224 Butte Along ditch just southeast of Butte Creek, ca 1/4 mi northeast of Hwy 99. 67 Comment
  JEPS116090  Carex nudata Lowell Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC46996  Carex praegracilis Vernon Oswald 1988-4-26 3281 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  JEPS106104  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale 32 Comment
  CHSC48558  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3088 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC44964  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side cyn on N-side N Fk Feather River and along hwy 70 ca 5 mi E of Jarbo Gap. Site of old (probably) mining operation. 487 Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC45071  Carex subfusca Vernon Oswald 1987-5-12 2391 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. On the edge of Butte Creek. 80 Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  SEINET11635243  Carex texensis L. P. Janeway 1989-1 3270 Butte Campus of California State University, Chico, N side of Big Chico Cr opposite Holt Hall 58 Comment
  CDA34760  Carex vernacula L. 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 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC99390  Carex whitneyi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10532 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. Upslope from creek. 1740 Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  UCR88005  Carex xerophila J. T. Howell, G. H. True 1969-4-9 45490 Butte Sierra Nevada Mountains, Magalia 701 Comment
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Oct 10 2010
  CHSC770  Caryopteris incana V. Holt 1952-7-2 Butte In Mrs. Sanborn's garden, Chico. 57 Comment
  CHSC25037  Castilleja T. Lorenz 1972-4-18 1 Butte Found ca. 12 mi n w of Magalia on Centerville road. 609 Comment
  CAS-BOT-BC249118  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
  CHSC114973  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC75541  Castilleja applegatei subsp. pinetorum G. F. Hrusa; T. D. Wilfred 1997-5-7 13731 Butte Northern California. Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC196055  Castilleja applegatei subsp. pinetorum A. A. Heller 1914-7-23 11646 Butte edge of forest about Chico Meadows 1219 Comment
  UC492737  Castilleja applegatei subsp. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  CHSC1810  Castilleja attenuata H. Summers 1929-3-25 Butte Richardson Springs Road. 106 Comment
  UCSB63618  Castilleja attenuata Holloway, Steve 1986-4-12 Butte 100 m of Chico Municipal Airport; Richardson Springs Quadrangle; NE 1/4; Sec. 27, T23N, R1E 102 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC90144  Castilleja exserta M. P. Howe 1984-4-1 11 Butte Salmon Hole, upper Bidwell Park. 182 Comment
  JEPS119784  Castilleja exserta subsp. exserta Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC34080  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd. ca. 9 mi ne of Chico. 396 Comment
  UC721677  Castilleja lacera A. A. Heller and H. E. Brown 1902-5-6 5459 Butte near Clear Creek; Berry Canyon Comment
  SD4806  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville, glades and edges of meadows 1500 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CHSC31643  Caulanthus lasiophyllus L. Ahart 1974-4-14 415 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60665  Caulanthus lasiophyllus Vernon H. Oswald; James Snowden 1993-4-7 5251 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  CHSC26673  Ceanothus cordulatus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1490 Butte On e side of Scotts John Rd, ca. 1.4 mi s of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  UC569525  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 mi se Butte Meadow (near Jonesville); Paynes Creek quad 1554 Comment
  CHSC96968  Ceanothus diversifolius Lowell Ahart; Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 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-BC47956  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CAS-BOT-BC51149  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles North-East of Forbestown 868 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  RSA34042  Ceanothus prostratus Unspecified 1939-4-10 15371 Butte [Unspecified] Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  CAS-BOT-BC52016  Ceanothus prostratus H. D. Thiers 1969-6-8 23444 Butte Forest Service road between McCloud and Dunsmuir, about 8 miles from Dunsmuir 1371 Comment
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  CHSC11991  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  CAS-BOT-BC52424  Ceanothus velutinus var. velutinus H. F. Copeland 1920-7-7 37 Butte Jonesville 1219 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  JEPS120082  Celtis australis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near the table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  CDA35494  Centaurea maculosa Ed Finley 2006-6-26 PDR# 1365082 Butte Paradise; Edgewood Lane. 0 Comment
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  SEINET3094331 Image available Centaurium muehlenbergii Marc Mittleman 1980-8-1 227 Butte Little Chico Creek, adjacent to China Garden Springs. Comment
  RSA724859  Centaurium muehlenbergii B. Castro, L. P. Janeway 2005-6-5 1480 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CAS-BOT-BC288526  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC69709  Centunculus minimus Lowell Ahart 1997-10-12 7917 Butte Along North Honcut Creek, about 2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  UC1609087  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte 1 1/2 mi. n. & 3 mi. e. Honcut (ca. 12 mi. s.e. of Oroville, on w. side of Dunstone Rd.) 60 Comment
  CHSC111743  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. 74 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
  CHSC20994  Cerastium glomeratum M. S. Taylor 1975-4-6 435 Butte In lawn, se corner of Arcadian and W. 3rd Ave, Chico. 60 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 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 northwest of the Ponderosa Dam 258 Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  UCR190822  Cercis occidentalis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SD5738  Chaenactis douglasii E. B. Copeland 1931-7-6 Butte Jonesville 1900 Comment
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  CHSC79290  Chamaesyce hooveri Beecher Crampton 1978-8-21 9659 Butte Ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy. 99. Dry bed of Esquon Lake. Comment
  CHSC47428  Chamaesyce maculata Lowell Ahart 1974-6-3 472 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31696  Chamaesyce nutans L. Ahart 1974-8-14 600 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UC175374  Chamaesyce ocellata A. A. Heller 1913-9-24 11143 Butte 8 mi n Oroville (Table Mtn Olive Ranch) 121 Comment
  CHSC113526  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  JEPS94634  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n Oroville (near a small wash, about 1/4 mi w of the cow chute on w side of Cherokee Road); North Table Mountain 388 Comment
  CHSC51365  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald; Lowell Ahart 1990-10-11 4457 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET10838812  Chenopodium botrys Lowell Ahart 1985-11-7 Ahart 5237 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  HSC100729  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte NE of Hooker Oak, Upper Bidwell Park, Chico, S end of cement barrier that controls water flow into Mud Creek. 69 Comment
  JEPS119926  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 if Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC33973  Chimaphila menziesii M. S. Taylor 1981-5-13 3704 Butte Jct. of 23N15.5, 22N66X and 22N40X, ca. 2 air mi s of Four Trees Rd, ca. 1 air mile w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  SEINET10449193  Chimaphila menziesii Mary Susan Taylor 1977-8-17 Taylor 1482 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC40084  Chlorogalum angustifolium R. M. Austin 1896-5-1 737 Butte Comment
  CHSC87541  Chlorogalum angustifolium R. D. Fischer; Jenny Marr 2004-4-27 137 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at north end of Disk Golf Course, near the top of the north-connecting trail going down toward Guardian Trail. Scattered throughout Disk Golf Course. 381 Comment
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  POM197056  Chorizanthe membranacea H. F. Copeland 1929-5-4 560 Butte Canyon of Chico Creek. Comment
  SEINET10479753  Chorizanthe polygonoides Mary Susan Taylor 1975-4-26 Taylor 510 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC103687  Chorizanthe stellulata Lowell Ahart 2010-4-30 16604 Butte Open area along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CAS-BOT-BC36372  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CHSC116638  Cicendia quadrangularis Lowell Ahart 2016-4-15 20748 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC48446  Cicendia quadrangularis Vernon Oswald 1984-3-25 1105 Butte Upper Bidwell Park, Chico, ca. 100 ft s of Salmon Hole Parking Lot. Along Yahi Trail. 152 Comment
  CHSC31622  Cichorium intybus L. Ahart 1977-7-4 1466 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10901866  Cinna latifolia Lowell Ahart 1983-8-16 Ahart 4287 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC8115  Cirsium andersonii Dave Isle 1969-5-20 484 Butte 1/2 mile E. of golf course on N. side of road in Upper Bidwell Park, Chico. 59 Comment
  CAS-BOT-BC278081  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CHSC24880  Clarkia arcuata T. L. Reynolds 1976-4-25 63 Butte Ca. 200 yds s of Butte Creek and ca. 400 yds sw of Covered Bridge, 6.9 mi ese of Chico. 121 Comment
  RSA712993  Clarkia concinna subsp. concinna L. Ahart 2006-5-19 12636 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
  CHSC27737  Clarkia gracilis subsp. albicaulis Robert A. Schlising; Coleta Lawler 1978-5-29 3277 Butte Near Cohasset; along Cohasset Road, 4.3 miles above crossing of Mud Creek and 4.1 miles NE of jct with road to Richardson Springs. Comment
  CHSC88639  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-29 354 Butte Plumas National Forest. 4WD Road off Concow Road. 853 Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  CHSC71156  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. South-facing road cutbank. 749 Comment
  CHSC89900  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  RSA108404  Clarkia mildrediae subsp. mildrediae Harlan Lewis, F. Vasek 1950-6-30 760 Butte Hwy 24, 2 miles S of Arch Rock on Feather River Comment
  CAS-BOT-BC163356  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road 853 Comment
  CHSC70740  Clarkia mosquinii L. P. Janeway 1994-6-23 4671 Butte Pinkston Canyon Road about 400 ft east of Concow Road. Southwest-facing road cutbank. 563 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  SFV10918  Clarkia purpurea M. L. Vincent 1968-6-5 774 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CAS-BOT-BC163644  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-4 2171 Butte Thermalito 65 Comment
  RSA21663  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  CAS-BOT-BC164792  Clarkia rhomboidea L. P. Janeway; Perrie Cobb 1993-6-1 4364 Butte Southeast side of canyon of North Fork Feather River; along dirt road from Cresta Rest Area to the Bear Ranch Creek falls 487 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC8616  Clarkia rhomboidea L. V. Ritter 1969-5-5 304 Butte Ca 2 mi. w of Cohasset, ca 10 yds s of Cohasset Highway. Comment
  RSA108407  Clarkia rhomboidea Harlan Lewis, M. Lewis 1947-6-11 398 Butte On Magalia to Stirling City Road, 1.4 mile from Magalia School Comment
  UC600558  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte crest between Colby Creek and Willow Creek; Jonesville 1676 Comment
  SEINET10453167  Clarkia rhomboidea Mary Susan Taylor 1981-5-21 Taylor 3790 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET10632447  Clarkia rhomboidea A. Arthur Heller 1921-5-30 Heller 13552 Butte Red clay soil along the grade above Rock creek on the Cohasset road, in the digger pine and oak belt. Comment
  UCD21830  Clarkia rhomboidea L. D. Gottlieb 1993-8-27 9320 Butte 1 mile south of Big Bend Rd. on Dark Canyon Road. Comment
  UC452686  Claytonia palustris Mrs. R. M. Austin Jul 1896 173 Butte Butte Meadows; Sutton House Comment
  CHSC34702  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-7 3631 Butte Along Sucker Creek, on e side of Bridge, ca. 4 air mi sw of Feather Falls, on moist mossy boulder in shade. 304 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
  CHSC38628  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-2-19 88 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. at Parking Area T (3.3 mi e of the power lines). Growing on the shaded side of a rock culvert. 219 Comment
  CHSC112352  Claytonia perfoliata subsp. perfoliata L. P. Janeway 3024-04-09 11223 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 22N12Xwhere it crosses Peavine Creek just below the confluence of Coon Creek; French Creek Basin. 762 Comment
  CHSC33356  Claytonia perfoliata subsp. perfoliata Steve Alvarez 1980-3-3 8 Butte Within Chico city limits, ca. 0.2 km nnw of Horselake, 1.0 km n of Big Chico Creek, on top of the ridge. 150 Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  CAS-BOT-BC440033  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte New high school grounds at Chico Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CAS-BOT-BC499273  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek, 1 mile north of Lost Creek Reservoir 1028 Comment
  CHSC114647  Collinsia greenei Vivian Paarker 1993-6-16 17 -21 Butte Yolla Bolly Ranger District. Serpentine ridge above and north of Snake Lake, north of FS road 28N10. 1260 Comment
  POM193432  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville. 1650 Comment
  CHSC38687  Collinsia sparsiflora var. bruceae Vernon Oswald 1983-3-7 136 Butte Upper Bidwell Park, Chico, near the South Rim Trail ca. 0.15 mi w of the power lines. 128 Comment
  CHSC44727  Collinsia tinctoria R. Banchero 1980-6-5 194 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  JEPS105626  Collinsia tinctoria L. P. Janeway, John Hunt 2003-6-6 7814 Butte Northern Sierra Nevada Foothills. East-southeast facing slope above Lake Oroville 350 m northeast of the north end of Bidwell Bar Bridge 296 Comment
  CHSC45346  Collomia grandiflora Vernon Oswald 1987-7-16 3131 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. Near the edge of the road. 1487 Comment
  CHSC38589  Collomia heterophylla Vernon Oswald 1983-4-17 328 Butte Upper Bidwell Park, Chico, beside the trail between Brown's Hole parking lot and the creek. 207 Comment
  CHSC62122  Collomia heterophylla B. Castro 1987-5-7 62 Butte Ca 3 air mi NE of Forest Ranch on the S side of Ponderosa Way ca 0.2 mi E of its jcn with Garland Road, at the trailhead for the Butte Creek Trail (ca 0.5 mi downstream from the Forks of Butte site). 633 Comment
  SEINET2445717  Collomia heterophylla R. M. McKee 1918-5-26 s.n. Butte Stirling City, Calif. Comment
  SBBG29160  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville 1500 Comment
  CAS-BOT-BC180389  Comandra umbellata subsp. californica John Thomas Howell 1961-9-22 s.n. Butte N Fork of Feather River, 10 mi from Oroville. Sierra Nevada Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  JEPS115666  Convolvulus arvensis Lowell Ahart 2009-5-30 15787 Butte About 50 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
  RSA755749  Convolvulus arvensis L. Ahart 2009-5-30 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  UC1032449  Cordylanthus pilosus subsp. hansenii C. G. Albertus 1933-6-1 12 Butte 6 mi w Paradise 152 Comment
  RSA719716  Cordylanthus pilosus subsp. pilosus Michael A. Vincent, K. Levings 2006-7-29 12895 Butte NE of Chico along Rt. 32. Comment
  CHSC50806  Cordylanthus tenuis subsp. viscidus Vernon Oswald; Lowell Ahart 1990-7-31 4415 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC36967  Coreopsis grandiflora M. S. Taylor 1982-8-16 4994 Butte S end of Stirling City on both sides of the Skyway. 1036 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  CAS-BOT-BC209736  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  JEPS115604  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS88910  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  CHSC3865  Cornus kousa Gary Dutton 1966-4-13 211 Butte CSC; East side of Shasta Dining Hall along Chico Creek and foot bridge. Comment
  UCD117251  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC118553  Cotula australis Lowell Ahart 2017-4-22 21389 Butte Normal plants, where we park vehicals, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  POM30560  Cotula coronopifolia C. C. Bruce 1897-05 128 Butte [Unspecified] Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS117513  Crassula aquatica Lowell Ahart 2010-5-22 16720 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
  CHSC46737  Crassula connata Lowell Ahart 1974-4-11 387 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET7072736  Crassula solieri A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC427954  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 301 Comment
  CHSC109531  Crepis pleurocarpa L. P. Janeway 2012-6-23 10890 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
  CHSC38437  Croton setiger Vernon Oswald 1983-6-24 758 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CAS-BOT-BC190091  Crypsis schoenoides Lowell Ahart 1982-7-10 3672 Butte Sierra Nevada. On bottom of a dry duck pond, ca. 0.25 mile southeast of Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CAS-BOT-BC190167  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  SEINET10497605  Cryptantha hendersonii Lowell Ahart 1983-5-28 Ahart 4020 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC40756  Cryptantha intermedia Lowell Ahart 1985-5-15 4966 Butte West of the Lunt Rd, about 1/2 mile north of the intersection of Lunt Rd, and Highway 70, north of Yankee Hill. 502 Comment
  CHSC62534  Cryptantha intermedia L. P. Janeway 1993-5-2 4337 Butte Sperpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  UC726521  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  NY43591  Cydonia oblonga S. Bianco 1995-11-10 1060 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  CHSC27265  Cynodon dactylon P. Moyer 1972-6-5 215 Butte CSUC Campus. E. of L.S. Bridge. 60 Comment
  CHSC41555  Cynodon dactylon R. L. Ondricek-Fallscheer 1982-5-26 136 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  JEPS124150  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC28916  Cynoglossum grande M. S. Taylor; J. Jokerst 1980-2-23 2314 Butte East side of Sawmill Rd, ca. 1/2 mi s of Pearson Rd, Paradise. 609 Comment
  SEINET10497511  Cynoglossum grande Mary Susan Taylor 1973-1 Taylor 30 Butte Along Humbug Road, ESE of Chico; Yellow Pine Forest. Comment
  UC436303  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC111967  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC6066  Cynosurus echinatus B. Wilson 1968-5-16 202 Butte E border of Bidwell Park, Chico. 59 Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  JEPS95919  Cyperus acuminatus Lowell Ahart 1999-8-13 8142 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
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 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
  CAS-BOT-BC114739  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, 36 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
  CHSC68382  Cyperus eragrostis L. P. Janeway 1988-5-29 2706 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  CHSC78280  Cyperus eragrostis Lowell Ahart 2000-6-29 8550 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS116009  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET191614  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 miles E of Honcut. 137 Comment
  UC838658  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi. e. Honcut 137 Comment
  CHSC41770  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 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
  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
  JEPS120159  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS98392  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte S end of the large dredge pond, on the W side of the Feather River between Palm Avenue and Vance Avenue Oroville Wildlife Area 28 Comment
  JEPS120156  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC25403  Cyperus rotundus M. P. Hayes 1977-9-8 55 Butte In flower bed at s end of Modoc Hall, behind Bidwell Mansion on California State University, Chico campus. 76 Comment
  POM183187  Cyperus squarrosus H. F. Copeland 1930-7-29 1351 Butte Neighborhood of Jonesville 1829 Comment
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC33910  Cypripedium fasciculatum M. S. Taylor 1981-5-27 3803 Butte W side of Paradise Lake, ca 1/2 way between Butte Cr ... Field redacted by CHSC, contact the data manager for more information 792 Comment
  CDA13306  Cystopteris fragilis G. F. Hrusa, T. D. Wilfred 1996-7-9 13152 Butte Sierra Nevada; on E side of bridge over Marble Creek on USFS N60. Comment
  CHSC39805  Cystopteris fragilis Ruby Gist 1935-3-1 Butte Fern Banks. Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC87954  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  UC600417  Cystopteris fragilis E. B. Copeland July, 1930 Butte bank of Butte Creek Jonesville 1500 Comment
  UC600566  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte gulch draining into Butte Creek meadows Jonesville 1800 Comment
  JEPS120533  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National Forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  JEPS115541  Darmera peltata Lowell Ahart 2009-5-15 15714 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
  UCD127393  Daucus carota Jerry Smith 1972-6-21 s.n. Butte Oroville. Comment
  SEINET10873898  Daucus pusillus Mary Susan Taylor 1982-5-21 Taylor 4491 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC48690  Delphinium gracilentum Vernon Oswald 1984-4-9 1130 Butte Feather Falls Trail, 1.8 trail mi. from the trail head at the end of Bryant Ravine Rd. 502 Comment
  CAS-BOT-BC121512  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC3986  Delphinium patens subsp. patens Kathy Sommarstrom 1967-4-15 28 Butte Found 400 yds west of covered bridge, 50 yds from creek on south side. 76 Comment
  SEINET3450728  Delphinium patens subsp. patens Unknown 2003-4-15 10100 Butte Oroville, Oroville, about 7 air miles north, about 1.25 miles northwest of the iron gate and fence, southwest of drainage entering Beatson Hollow, steep slopes of Beatson Hollow 280 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
  CHSC53297  Delphinium variegatum R. O. Gilpatrick 1970-3-20 19 Butte Found 1 mile S. on Bruce Rd. from intersection of Humboldt Rd., Chico. N.W. side of road. Comment
  UC1562846  Delphinium variegatum Barbara Ertter with Lowell Ahart 1986-4-13 5886 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  CAS-BOT-BC82873  Dendromecon rigida A. A. Heller 1928-6-20 14629 Butte At Paradise. Comment
  SEINET10448608  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-5-15 Taylor 3752 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  UC478557  Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte border of Lily Pond Jonesville 1750 Comment
  UCD61116  Deschampsia cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 miles SSE of Butte Meadow. 1493 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  SEINET10524182  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  UCD63900  Desmazeria rigida L. Ahart 1979-4-28 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  CHSC2094  Dichelostemma capitatum subsp. capitatum N. Maxwell 1929-3-4 Butte Salmon Hole. 121 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  RSA333553  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-23 32 Butte South end of 18th Street, about 0.25 mile S of State Route 162 in Thermalito. 150 Comment
  CHSC38767  Dichelostemma congestum Vernon Oswald 1983-5-23 543 Butte Upper Bidwell Park, Chico, near Yahi Trail of Brown's Hole. 207 Comment
  RSA333579  Dichelostemma lacuna-vernalis Craig Martz, Richard F. Sannar 1982-3-22 30 Butte East side of State Route 191 at intersection of Pentz Road. 300 Comment
  CAS-BOT-BC501077  Dichelostemma multiflorum Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CHSC23664  Dichelostemma volubile M. S. Taylor 1976-4-26 1080 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  UC1476889  Dichondra donelliana Lowell Ahart 1979-4-28 Butte banks of creek ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  CHSC36293  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CHSC94982  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  UCD64122  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CAS-BOT-BC153761  Diplacus angustatus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC151924  Diplacus douglasii H. E. Brown 1897-4-15 198 Butte Near Clear Creek Comment
  CHSC22325  Diplacus grandiflorus Robert A. Schlising 1964-6-12 2727 Butte Foothills. 9.5 miles south of Injun Jim Camp (in Plumas Co. near Tobin) along Alt. Hwy. 40 and Feather River. Comment
  SEINET13751112 Image available Diplacus grandiflorus F. W. Pennell, A. A. Heller 1940-1 25673 Butte Route 24, 6 miles up, along Feather River, above Oroville 91 Comment
  SEINET215109  Diplacus kelloggii R. J. Planck 1963-1 28 Butte Ragdump Rd, 4 mi E of Stirling City log pond Comment
  CHSC113438  Diplacus layneae Lowell Ahart 2014-7-7 19557 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC38704  Diplacus layneae Vernon Oswald 1983-6-11 667 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion weir. 79 Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CHSC44815  Diplacus torreyi R. Banchero 1980-6-12 209 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CHSC79836  Diplacus torreyi G. F. Hrusa; T. D. Wilfred 1996-7-9 13114 Butte Plumas National Forest. Above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1300 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24851  Dodecatheon clevelandii subsp. patulum A. D. Launer 1976-3-14 2 Butte Small population 100 yds n of Humboldt Rd, ca. 4 mi e of Chico. 97 Comment
  CHSC81291  Dodecatheon clevelandii subsp. patulum J. Trizzino 2001-2-22 4 Butte North side of Humboldt Road, ca. 0.5 mi east of intersection with Bruch Road, about 300' south of rock wall on grazed area. 112 Comment
  JEPS14465  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 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
  CHSC90037  Draba verna var. verna Mark Hietala 1990-3-20 1 Butte In a stream bed, ca. 2 mi e of Chico, between Hwy 32 and Humboldt Rd. Stream bed. 91 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
  CHSC46489  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 air ... Field redacted by CHSC, contact the data manager for more information 1615 Comment
  SD2057  Drosera rotundifolia E. B. Copeland 1930-7-25 Butte Jonesville 1500 Comment
  UCD99547  Drosera rotundifolia Barry Rice 2005-7-3 BR 050702 Butte in meadow draining into Snag Lake, on the southeast side of Summit Road. 1770 Comment
  CHSC27259  Duchesnea indica P. Moyer 1972-3-11 123 Butte CSUC Campus. 200 ft. from n side of cafe annex bridge, w side off walkway. 60 Comment
  CHSC3235  Duchesnea indica Susan Carrauthers 1966-4-20 115 Butte Flower bed on N. side of Life Science building of Chico State College. City of Chico. Comment
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CAS-BOT-BC197098  Echinochloa crus-galli John Thomas Howell 1951-6-26 27519 Butte Big Bend Mt. 609 Comment
  CDA42929  Echinochloa crus-galli L. Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS120870  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SEINET231721 Image available Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch ca 2.3 mi N and 0.3 mi E of Honcut ca 12 mi S of Oroville 50 Comment
  SEINET239850 Image available Echinochloa crus-galli E. Dean, J. Ditomaso; E. Healy 2001-8-20 855 Butte Biggs UC Field Station 30 Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10509316  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET10868954  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  UCD61172  Echinochloa oryzoides P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CHSC76295  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CHSC113361  Elatine Lowell Ahart 2014-4-25 19398 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC115322  Elatine Lowell Ahart 2015-4-24 20074 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  CHSC82218  Elatine ambigua Lowell Ahart 2002-4-22 9522 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  JEPS113683  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  SEINET13709912  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8699 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi SW Chico Comment
  CHSC30948  Eleocharis bolanderi L. Ahart 1980-7-4 2459 Butte In a small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET8795265 Image available Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station Comment
  JEPS98604  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  CAS-BOT-BC112787  Eleocharis macrostachya John Thomas Howell 1962-6-16 37629 Butte Concow School N of Yauko Hill. 533 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
  SEINET11749733  Eleocharis ovata Unknown 1983-1 4027 Butte Peter Ahart Ranch, 2.5 mi NE of Honcut 50 Comment
  CHSC40415  Eleocharis pachycarpa Lowell Ahart 1985-8-11 5161 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM144806  Eleocharis palustris E. B. Copeland 1903-5-15 3182 Butte Chico Comment
  SEINET10466927  Eleocharis palustris Lawrence P. Janeway 1991-6-7 Janeway 3992 Butte Honcut quad T18N, R4E, SW 1/4 of sec 33, elev.100 feet. 30 Comment
  SEINET7586858 Image available Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  CHSC78566  Eleocharis parishii Lowell Ahart 2000-9-4 8682 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  HSC97764  Eleocharis parishii L. Ahart 2000-5-30 8409 Butte 1/4 mi. NE of Kunkle Reservoir, E of Pentz Magalia Rd., 2 mi. S of Paradise 549 Comment
  SEINET3478065  Eleocharis parishii Unknown 2000-6-21 8497 Butte Chico, Chico, about 3.3 air miles northeast of Manzanita Avenue, north of the Salmon Hole, south of parking area P 100 Comment
  SEINET7586923 Image available Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 549 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC78308  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS98416  Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte 12 mi SE of Oroville (Peter Ahart Ranch, N margin of a large wash, 200 yds E of the road crossing, about 1 1/2 mi N and 1 1/4 mi E of Honcut) 36 Comment
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  CHSC43204  Elymus glaucus Robert Banchero 1981-7-19 613 Butte Big Crane Valley. Meadow. 1584 Comment
  CAS-BOT-BC203429  Elymus glaucus subsp. glaucus John Thomas Howell 1962-6-15 37488 Butte Magalia 731 Comment
  CHSC69061  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC102502  Elymus glaucus subsp. jepsonii Lowell Ahart 2009-5-30 15795 Butte About 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC65611  Elymus glaucus subsp. jepsonii L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  CHSC6151  Elymus triticoides E. Parreno 1968-5-7 84 Butte Vacant lot on NW corner of W 7th and Cedar Sts., Chico. 59 Comment
  CAS-BOT-BC165910  Epilobium John Thomas Howell 1959-9-26 35085 Butte Arch Rock, N. Fk. Feather River 457 Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC37441  Epilobium brachycarpum R. A. Schlising 1981-9-20 4199 Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In ditch. Comment
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  CHSC117347  Epilobium campestre B. Castro 2013-12-13 2002 Butte Sacramento Valley. Richvale vernal pools, 500 to 1000 ft W of Hwy 99 directly across from Thermalito Afterbay and just less than 1 mi S of Richvale Hwy. Bottoms of vernal pools south of east-west ditch near S end of property. 33 Comment
  JEPS95175  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and the Sacramento River (Sacramento River National Wildlife Refuge, Llano Seco Unit, at s end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC94658  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 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
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UCD105790  Epilobium ciliatum subsp. ciliatum E. M. Johnston 1915-1 W 146 J Butte Biggs. Comment
  CHSC105515  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, 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 Philbrood Reservoir. 1886 Comment
  UCD83699  Epilobium cleistogamum Christina Owens 2005-5-8 s. n. Butte Tuscan Preserve (Lower Wurlitzer Ranch), about 10 mi N of Chico. Comment
  CHSC30900  Epilobium densiflorum M. S. Taylor 1980-8-30 3320 Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 mi e of Oregon City, ca. 5.5 mi n of Oroville. 365 Comment
  JEPS115272  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of 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
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC111965  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 306 Comment
  JEPS119880  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC94408  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  POM184014  Epilobium hallianum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC93455  Epilobium minutum Lowell Ahart 2006-5-10 12623 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 385 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  SEINET10453022  Epilobium obcordatum Mary Susan Taylor 1980-8-2 Taylor 3201 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  RSA516785  Epilobium paniculatum L. Ahart 1976-10-2 s.n. Butte Peter Ahart Ranch, Honcut. 46 Comment
  RSA0045628  Epilobium torreyi Lowell A. Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 122 Comment
  CHSC88066  Epipactis gigantea R. D. Fischer 2004-6-12 152 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  SD10028  Equisetum arvense E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  SEINET10470670  Equisetum laevigatum Lowell Ahart 1983-4-22 Ahart 3937 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Riparian Woodland; 50 m. 50 Comment
  CAS-BOT-BC57511  Equisetum telmateia E. B. Copeland 1899-4-1 s.n. Butte near Chico Comment
  CHSC45212  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 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
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  SEINET10954137  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 Ahart 8306 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC284082  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-7 5428 Butte East of the Feather River, north of the Oroville Gridley Highway about 3 miles east of Gridley 28 Comment
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC38820  Eragrostis pectinacea var. pectinacea Vernon Oswald 1983-6-18 710 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  SEINET10507726  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  RSA755367  Eragrostis pilosa var. pilosa L. Ahart 2009-10-7 16408 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  JEPS115255  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SEINET10873979  Eremocarpus setiger Mary Susan Taylor 1977-6-25 Taylor 1372 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC48159  Ericameria bloomeri Vernon Oswald 1985-8-28 1933 Butte Humboldt Rd. 0.2 mi s of Humboldt Summit. 2005 Comment
  CHSC28381  Ericameria nauseosa var. speciosa J. D. Jokerst; M. S. Taylor 1979-10-13 390 Butte Jordan Hill RD. (Ponderosa Way) 2.8 mi. N. of junction with Concow Cr. 609 Comment
  CHSC73745  Ericameria nauseosa var. speciosa B. Castro 1996-8-20 714 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CHSC97735  Erigeron bonariensis Lowell Ahart 2007-11-3 14574 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  CHSC78992  Erigeron canadensis Lowell Ahart 2000-11-4 8716 Butte Just north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC426986  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte above Jonesville 548 Comment
  CAS-BOT-BC295170  Erigeron inornatus John Thomas Howell 1955-6-15 30476 Butte Paradise 518 Comment
  CHSC88077  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on canyon edge of Humboldt Trail n. of Bloody Pin Trail junction. UTM: 10609319E 4405116N. 411 Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  SBBG17301  Erigeron philadelphicus M. Vincent 1962-4-15 173 Butte intersection of Bernum and Pentz Rds, near the town of Pentz Comment
  CHSC100494  Erigeron sumatrensis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15412 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UCD169451  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte About 1 1/2 miles (air) southeast of Gridley, about 100 yards east of Gilstrap Avenue, on the south of O'Brien Road. 28 Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  POM73515  Eriodictyon californicum C. C. Bruce 1897-05 1811 Butte Butte Creek. Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC259403  Eriogonum luteolum John Thomas Howell 1975-6-15 51075 Butte Butte Creek near Chico. (On Skyway btw. Chico & Paradise) 60 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
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  NY282106  Eriogonum microthecum var. laxiflorum R. R. Halse 1988-8-13 3756 Butte Along U.S. Hwy 20/26, 3.3 miles northeast of the entrance to Craters of the Moon National Monument, at milepost 233. 1680 Comment
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Feb 29 2016
  CHSC52111  Eriogonum nudum var. pubiflorum Steven Triano 1988-9-18 255 Butte Dry, rocky roadside along Hwy. 32 ca 7.2 mi e of its jct. with Hwy. 99. 463 Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  CHSC69454  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte On the west side of Concow Road, about 2 miles northeast of Concow Reservoir. 701 Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  RSA0118749  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 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
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CAS-BOT-BC262209  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  SBBG28265  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville Comment
  SD1345  Eriogonum ursinum E. B. Copeland 1930-7-6 Butte Jonesville, rocky ridge 2050 Comment
  CHSC28939  Eriogonum ursinum var. ursinum M. S. Taylor 1978-7-18 1698 Butte On top of Humboldt Peak. 2154 Comment
  CHSC39091  Eriogonum ursinum var. ursinum R. A. Schlising 1980-7-28 3935 Butte N part of county, E of Jonesville on road to Scotts John Creek. Comment
  CHSC83018  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  SD5694  Eriophyllum lanatum E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  CHSC60818  Eriophyllum lanatum var. croceum Vernon H. Oswald; Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  CHSC42466  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  JEPS115587  Eriophyllum lanatum var. grandiflorum Lowell Ahart 2009-5-23 15770 Butte On the north side of Ten Mile House Road, just southeast of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC29992  Erodium brachycarpum L. Ahart 1980-4-7 Butte Along Swedes Flat Road, near Bangor, on damp granitic soil near the bridge across Rocky Honcut Creek. 320 Comment
  CHSC31154  Erodium brachycarpum M. S. Taylor 1980-3-1 2331 Butte West end of Dump, on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC663  Erodium brachycarpum B. Hetherington 1936-9-2 Butte Chico. 57 Comment
  UCR237331  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18749 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SD225723  Eryngium vaseyi Carol Witham, Jennifer Buck 2001-5-3 186 Butte Off Hwy 99, 2 mi north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072 Comment
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC110335  Erythranthe filicifolia L. P. Janeway 2013-5-21 11114 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
  CHSC44800  Erythranthe glaucescens R. Banchero 1980-6-12 211 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CHSC44907  Erythranthe glaucescens Lowell Ahart 1988-7-31 6144 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CAS-BOT-BC153853  Erythranthe glaucescens Jed McClellan; Bonnie McClellan 1976-4-16 s.n. Butte Honey Run Road Comment
  SEINET8400618  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte low ground 12 miles north of Chico. Comment
  CHSC44668  Erythranthe guttata R. Banchero 1980-6-2 185 Butte Cherry Hill Meadows, 8.2 mi NE of Humbolt Rd and Hwy 32 along Humbolt Rd. 1463 Comment
  CHSC84402  Erythranthe guttata Lowell Ahart 2003-7-23 10436 Butte On cliffs and along a road ditch, at the generator, Forbestown Reservoir, about 4 1/2 miles (air) northeast of Forbestown. 554 Comment
  CHSC84459  Erythranthe guttata Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a 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. 497 Comment
  SD7082  Erythranthe guttata Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC151464  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CHSC38707  Erythranthe nasuta Vernon Oswald 1983-3-26 209 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CHSC11895  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  SEINET8399970  Erythranthe rubella E. B. Copeland 1930-6-28 461 Butte Jonesville; in "Scotch John" meadows. 1700 Comment
  CHSC27202  Erythrina corallodendron Pam Moyer 1971-10-30 54 Butte CSUC Campus. NE corner of Bidwell Mansion porch. Comment
  CHSC32649  Erythronium multiscapideum M. S. Taylor; D. V. Hemphill 1981-3-18 3416 Butte N side of Pulga Rd, near its jct with Pulga bridge over Hwy 70. 487 Comment
  CAS-BOT-BC402640  Eschscholzia caespitosa A. A. Heller 1938-4-23 15052 Butte Just west of the summit between the West Branch and the North Fork of the Feather River on Highway #24 Comment
  CHSC24874  Eschscholzia californica P. Goldman 1976-4-4 15 Butte On west side of Cohasset Hwy, ca. 8 mi n of Chico. 121 Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  UC855193  Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte on Feather River Hwy near Yankee Hill road (w side of summit) Comment
  HSC23330  Eschscholzia californica L. Walk 1971-4-9 3 Butte S bank of stream, .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99, Chico 30 Comment
  UCD95290  Eschscholzia californica Curtis Clark 1975-6-25 503 Butte Butte Canyon Road, 0.9 mile east of junction of Manzanita and Centennial Avenue in Chico. Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CAS-BOT-BC419504  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte Hills 8 miles north of Oroville Comment
  CHSC37708  Eucalyptus camaldulensis M. S. Taylor 1982-5-22 4494 Butte In Graylodge Wildlife Refuge, at end of Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  UC202227  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  RSA0047086  Euonymus occidentalis L. P. Janeway 2006-8-8 8831 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 miles N of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CHSC54474  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4736 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Jordan Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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Mar 30 2007
  UC1609453  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  POM85677  Euphorbia crenulata C. C. Bruce 1897-04 2091 Butte Cherokee grade. 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
  UCD35608  Euphorbia hooveri Beecher Crampton 1958-8-12 5070 Butte 10 miles southeast of Chico. Comment
  CAS-BOT-BC310671  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte About 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir 1158 Comment
  CHSC27705  Festuca californica Robert A. Schlising; Coleta Lawler 1978-5-27 3280 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. Rr and Coutelenc Road. Comment
  CHSC96752  Festuca elmeri Lowell Ahart 2007-7-15 14306 Butte Road bank, along the east side of Encina Grande Road (Bloomer Hill Road), about 200 yards southeast of the home, about 3/8 mile (air) southwest of Bloomer Hill. 742 Comment
  SEINET10662355  Festuca occidentalis Lowell Ahart 2007-5-29 Ahart 13942 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  JEPS95024  Festuca subulata Lowell Ahart 1997-7-11 7807756 Butte abour 2 air mi ne of Stirling City (s of the dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  SEINET10475089  Filago gallica Mary Susan Taylor 1978-5-7 Taylor 1591 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CAS-BOT-BC454524  Fragaria vesca subsp. californica M. S. Taylor 1980-4-1 2421 Butte Along S side of Butte Creek, ca. 1/4 mile downstream from Honey Run covered bridge, ca. 6 miles E of Chico. 121 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC62940  Frangula californica subsp. tomentella Peter H. Raven 1953-5-9 5427 Butte 8 mi. from Bangor on Oroville Road. Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  JEPS120064  Fraxinus Lowell Ahart, Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the south side of Brig Chico Creek, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET10457423  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  JEPS115585  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  SEINET10838744  Fremontodendron decumbens Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4084 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC504377  Fritillaria John Thomas Howell 1962-6-15 37465 Butte Magalia, Sierra Nevada Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  HSC72756  Fritillaria eastwoodiae M. S. Taylor, D. V. Hemphill 1981-3-18 3430 Butte Ridge NNW of sawmill Peak of Jordan Hill Rd., 1.0 mi. NE of Magalia 701 Comment
  CAS-BOT-BC124016  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte near Durham Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset Comment
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  CHSC46404  Galium aparine Lowell Ahart 1989-5-28 6295 Butte South of Oregon Gulch road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10902545  Galium bifolium Mary Susan Taylor 1978-7-19 Taylor 1763 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
  CHSC51914  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3139 Butte Ridge SE from Snow Mtn. 2103 Comment
  JEPS98587  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS52735  Galium porrigens var. tenue Lauramay T. Dempster 1964-7-24 4043 Butte 3 mi s Nimshew 487 Comment
  HSC73011  Galium trifidum subsp. columbianum M. S. Taylor, L. Ahart 1981-8-16 4196 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  CHSC30778  Galium triflorum M. S. Taylor 1978-7-19 1740 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  CHSC77979  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west 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
  CAS-BOT-BC303383  Gamochaeta ustulata Lowell Ahart 1985-5-31 5036 Butte About 0.25 mile W of the Enterprise Launch Area about 25 ft above the high water line of Lake Oroville, NE of Oroville 274 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
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  UC1122707  Garrya fremontii J. E. Sowder 1933-8-4 121 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 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
  SEINET191205 Image available Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte Lone Pine Forest Guard Station: 2 miles north of route 32 Comment
  CHSC96326  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. On steep east-facing bank between edge of meadow and upper forest. 1082 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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  SEINET10453072  Gayophytum diffusum subsp. parviflorum Mary Susan Taylor 1977-8-17 Taylor 1459 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC29403  Gayophytum humile R. A. Schlising; R. Banchero 1980-6-12 3717 Butte Chico Meadows, off Scout Road 1.1 mi N of Butte Meadows jct of Humboldt Road and Skyway/Humbug Road; dry margins of meadows and at streamsides. 1316 Comment
  CHSC31182  Gayophytum humile M. S. Taylor 1978-7-18 1716 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC14097  Genista monspessulana L. V. Ritter 1969-4-16 160 Butte Ca. 4.8 mi w of Cherokee turn off Hwy 70, ca. 10 yds e of rd, ca. 9 mi n of Oroville. Comment
  CHSC46705  Gentiana newberryi var. tiogana V. Oswald; L. Ahart 1989-8-22 3956 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  SD3715  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC109656  Geranium carolinianum Lowell Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. 79 Comment
  CDA5617  Geranium dissectum L. Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  SD239775  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley: Middle Noncut Road, 1.5 miles east of CA-70, ESE of Gridley. 17 Comment
  CHSC99007  Geranium molle Lowell Ahart 2008-5-21 14764 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the 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
  CAS-BOT-BC263236  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC29391  Geum macrophyllum R. A. Schlising; R. Banchero 1980-6-2 3634 Butte First crossing of Butte Creek by Humboldt Road, above Butte Meadows. In area bordering the creek. 1389 Comment
  CHSC42772  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of the creek. 1097 Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC40921  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 4989 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC42089  Gilia capitata subsp. pedemontana Rusti Gammon 1986-4-18 19 Butte Ca. 5 mi s of Centerville, ca. 20 yds w of Butte Creek above w bank. 91 Comment
  JEPS115669  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico 269 Comment
  SD122562  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 4671 Butte At the Ponderosa Dam, ca. 2.0 miles northwest of Forbestown. 370 Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  CHSC52104  Gilia tricolor Carol A. Bordin 1983-4-11 11 Butte Ca. 0.5 mi e of Hwy 99 on Durham Pentz Rd, n of Falager Ct, n Durham Pentz Rd, ca. 4 mi e of Durham. 54 Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CHSC3229  Ginkgo biloba Virginia Hagaman 1966-5-5 165 Butte Chico State College Campus. Comment
  CAS-BOT-BC266587  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC67358  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2221 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 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
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 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
  JEPS122248  Glinus lotoides Lowell Ahart 2014-9-23 19869 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
  JEPS95316  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte about 1 1/2 mi S of Oroville Airport (S side of the Shooting Area, SW of Oroville) 45 Comment
  CAS-BOT-BC280565  Glyceria elata A. A. Heller 1928-6-16 14694 Butte Butte Meadows along Butte Creek Comment
  CHSC51873  Glycyrrhiza lepidota L. P. Janeway 1988-6-5 2729 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC66076  Glycyrrhiza lepidota Vernon H. Oswald 1996-5-22 7624 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along the slough and on the E side of Little Grant near the Riparian Sanctuary. 28 Comment
  SEINET10452321  Glycyrrhiza lepidota Mary Susan Taylor 1979-10-12 Taylor 2245 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  POM358819  Gnaphalium chilense H. F. Copeland 1923-6-4 520 Butte Nelson. Comment
  CAS-BOT-BC302469  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  JEPS120609  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. Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC85749  Goodyera oblongifolia G. F. Hrusa; T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 800 Comment
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC44189  Grindelia camporum var. camporum Vernon Oswald 1988-6-22 3511 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Rice paddy in the southeast part of the ranch. 53 Comment
  UCR219266  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC51859  Hackelia californica L. P. Janeway 1988-6-25 2860 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from the Skyway. Near the creek. 1554 Comment
  CHSC75336  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC28541  Hazardia whitneyi M. S. Taylor; J. D. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd, near Sawmill Peak, ca. 9.2 mi n of its jct with Concow Rd, ca. 2 mi e of Magalia. 944 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
  CDA42935  Hedera helix L. Ahart 2012-10-2 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA42772  Hedypnois cretica L. Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SD241752  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte Damp soil of dredge piles, no the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SBBG54694  Helenium bigelovii E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  CAS-BOT-BC306543  Helenium bigelovii A. A. Heller 1928-6-16 14668 Butte At Butte Meadows Comment
  JEPS88225  Helenium puberulum Vernon H. Oswald and Lowell Ahart 1996-6-10 7737 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on riprapped bank of river at n end of the Riparian Sanctuary); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  UC478462  Helianthella californica subsp. nevadensis E. B. Copeland 1931-6-22 695 Butte at the Summit; Jonesville Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  RSA505367  Hemizonia fitchii R. C. Bacigalupi, G. Thomas Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak. 81 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  SEINET10971134  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1980-8-15 Taylor 3249 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  CHSC34205  Herniaria hirsuta subsp. hirsuta J. D. Jokerst 1981-9-27 1482 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. E bank of Sacramento River. Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC134866  Hesperevax caulescens Mrs. R. M. Austin 1896-5-1 685 Butte Comment
  UC1925781  Heteranthera rotundifolia unknown 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  SEINET267154  Heteromeles arbutifolia T. A. Ranker, P. G. Trapp 1994-6-17 1617 Butte Pence Road south of Paradise. 395 Comment
  RSA0119324  Heterotheca grandiflora Lowell A. Ahart 2014-11-17 19912 Butte Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 254 Comment
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  CAS-BOT-BC311024  Heterotheca oregona var. compacta Lowell Ahart 1981-7-18 2940 Butte About 4.5 miles southeast of Oroville 35 Comment
  POM92886  Heuchera micrantha C. C. Bruce 1897-05 2041 Butte Butte Creek. Comment
  UCD116346  Hibiscus lasiocarpos var. occidentalis G. L. Webster; G. L. Stebbins 1967-8-27 7533 Butte Howard Slough, along Biggs-Princeton road c. 1/2 mile W of Butte Creek. Comment
  CDA7974  Hieracium scouleri T. C. Fuller 1958-7-7 1911 Butte 1 mile north of Pulga Station. 0 Comment
  CHSC38036  Hirschfeldia incana R. E. Preston 1982-11-13 367 Butte At roadside, Nelson Rd, ca. 100 yds w of Butte Creek, ca. 4 mi w of Nelson. 30 Comment
  CHSC42703  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 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. 274 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC43670  Hoita macrostachya Vernon Oswald 1983-6-14 685 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  SEINET3449334  Hoita macrostachya Unknown 2003-7-17 10420 Butte Forbestown, Forbestown, about 4 air miles southwest, east side of Black Bart Road, about 0.5 miles west of the intersection of Forbestown Road and Black Bart Road 710 Comment
  CAS-BOT-BC280713  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. Comment
  SEINET10591428  Holcus lanatus Lowell Ahart 1987-6-9 Ahart 5728 Butte On dry sand along the edge of the North Fork of the Feather River, near the Poe Power House about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC112618  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 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
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  CHSC49553  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1984-7-2 1343 Butte Humbug Rd. 1.7 mi s-w of Humbug Summit. In a meadow. 1859 Comment
  UCD85409  Hordeum brachyantherum subsp. brachyantherum Robert E. Preston 1982-7-21 345 Butte Ca. 1.1 miles W of Philbrook Res. Upper Montane Forest. 1676 Comment
  CDA34626  Hordeum murinum subsp. leporinum L. Ahart 2009-4-17 15562 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
  CHSC92553  Hordeum murinum subsp. leporinum Lowell Ahart 2005-12-11 12518 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC8217  Hordeum vulgare D. McClain 1969-5-1 71 Butte 5 ft. s.w. of Highway 99E, 6 1/2 mi. s. of Chico. 54 Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CAS-BOT-BC536584  Horkelia californica var. elata Lowell Ahart 1980-7-29 2505 Butte Sierra Nevada, near Forbestown Road 750 Comment
  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
  UC481576  Horkelia fusca subsp. tenella H. F. Copeland 1922-8-20 458 Butte Jonesville Comment
  OBI48987  Horkelia tridentata Lewis S. Rose 1939-6-6 39231 Butte 2 mi NE of Clipper Mills Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CHSC31863  Hydrocotyle umbellata L. Ahart 1977-7-8 1446 Butte Along edges of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS118482  Hypericum anagalloides Lowell Ahart 2011-7-9 17575 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC108761  Hypochaeris glabra L. P. Janeway 2011-6-7 10368 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC30304  Hypochaeris glabra M. S. Taylor 1980-5-27 2682 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  POM109038  Iris C. C. Bruce 1898-04 2068 Butte Foothills Butte County Comment
  CAS-BOT-BC133550  Iris hartwegii John Thomas Howell 1962-6-16 37557 Butte Magalia 731 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC21276  Iris macrosiphon M. S. Taylor 1975-4-13 379 Butte Ca. 75 ft s of the Skyway on Neal Rd, Paradise. 609 Comment
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC24909  Iris macrosiphon P. Goldman 1976-4-4 14 Butte E side of Cohasset Rd, ca. 9 mi n of Chico. 121 Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC90653  Iris macrosiphon Doug Burcombe 1988-4-20 16 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  UCD138822  Iris tenuissima W. R. Powell 1968-5-17 1507 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  CHSC49824  Isoetes nuttallii Vernon Oswald; Lowell Ahart 1990-4-9 4158 Butte Feather Falls on Fall River near its junction with the Middle Fork of Lake Oroville. 548 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  JEPS98569  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  CHSC38924  Juncus balticus subsp. ater Vernon Oswald 1983-5-18 507 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). In a drainage ditch. 103 Comment
  CHSC61346  Juncus bufonius var. bufonius Lowell Ahart 1993-7-29 7118 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
  CHSC61515  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. Comment
  CHSC94836  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC98806  Juncus bufonius var. bufonius Lowell Ahart 2008-5-2 14707 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  UC1609055  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte about 2 mi w of Biggs (on the n side of Biggs Princeton Road); Biggs Princeton Road Comment
  UC1609069  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte about 1 air mi nw of the Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC90947  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 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
  JEPS113862  Juncus bufonius var. congestus Lowell Ahart 2007-6-3 13971 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir 415 Comment
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  CHSC47539  Juncus capitatus Lowell Ahart 1980-5-4 2159 Butte Vernal pool, in an open field south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  CHSC102180  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along small drainages, on the east side of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC44443  Juncus dubius Lowell Ahart 1988-6-23 6072 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
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  JEPS98528  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC96940  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  JEPS122024  Juncus effusus subsp. pacificus Lowell Ahart 2014-7-4 19554 Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  UCD141503  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte on the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  CHSC107583  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. Meadow in Yellow Pine Forest. 1133 Comment
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC69728  Juncus ensifolius Lowell Ahart 1997-10-20 7928 Butte On sand bars, 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
  CHSC44246  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1988-7-13 3587 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC59020  Juncus hemiendytus var. hemiendytus Lowell Ahart 1992-7-26 6860 Butte In a small meadow, about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  CHSC47554  Juncus howellii Lowell Ahart 1981-8-15 3047 Butte On the south side of the dirt road, about 1 mile east of Coon Hollow Road, southeast of Snag Lake, about 10 miles north of Inskip. 1524 Comment
  JEPS45835  Juncus howellii Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10472444  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4314 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  SEINET10472449  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2561 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC110102  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113202  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 424 Comment
  JEPS104262  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS110151  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
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC50380  Juncus mexicanus Vernon Oswald 1990-6-6 4285 Butte East terminus of Dean Rd, Paradise, in the canyon of the West Branch of the Feather River at Upper Miocene Canal. Bordering the parking area at the canal. 472 Comment
  RSA368326  Juncus nevadensis H. F. Copeland 1930-7-25 1358 Butte Jonesville. 1524 Comment
  CHSC44527  Juncus occidentalis Lowell Ahart 1988-5-29 6010 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  JEPS98471  Juncus occidentalis Lowell Ahart 2000-6-29 8535 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  POM197255  Juncus oxymeris H. F. Copeland 1923-8-13 1099 Butte Nelson. Comment
  CHSC107589  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC64933  Juncus triformis Robin Ondricek-Fallscheer; Joe Molter 1995-6-23 177 Butte Cascade Range Foothills. BLM parcel along a drainage into Little Chico Creek ca. 0.75 mi ESE of Forest Ranch. 640 Comment
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CHSC97204  Juncus usitatus Lowell Ahart 2007-7-27 14398 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  UC1594544  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Thermalito Diversion Pool, Lake Oroville Recreation Area 76 Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC235678  Keckiella breviflora var. glabrisepala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 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
  UCSB63914  Kelloggia galioides Ahart, Lowell 1997-8-1 Butte T24N, R5E, northwest 1/4 Section 18; , on the south 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; Yellow Pine Forest 1432 Comment
  CHSC113191  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  JEPS121302  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC65213  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  JEPS117272  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  UCD141219  Kyllinga brevifolia B. Crampton 1962-2-20 s.n. Butte Oroville. Comment
  CAS-BOT-BC274278  Lachnagrostis filiformis Lowell Ahart 1977-4-29 1520 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA30230  Lactuca saligna L. Ahart 2009-8-3 16254 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. Comment
  CHSC111604  Lactuca serriola Lowell Ahart 2012-8-10 18417 Butte The north side of the parking area, Bidwell Mansion, Chico. Uncommon. Urban. 60 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC341298  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341316  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  HSC38107  Lagophylla glandulosa Thomas W. Nelson, Jane P. Nelson 1976-5-9 2448 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC4650  Lasthenia fremontii R. Carter 1966-4-21 356 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 10 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  CHSC90992  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville. 25 Comment
  CAS-BOT-BC353438  Lasthenia glabrata subsp. glabrata A. A. Heller 1914-5-13 11394 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CAS-BOT-BC213337  Lathyrus jepsonii subsp. californicus Peter H. Raven 1953-5-9 5426 Butte 8 miles from Bangor on Oroville Road Comment
  JEPS117534  Lathyrus latifolius Lowell Ahart 2010-6-12 16791 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico 332 Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  CAS-BOT-BC213290  Lathyrus sulphureus Clarence R. Quick 1952-6-30 52 -96 Butte Ridge top, Big Bar Mt. east of Pulga, Sierra Nevada Comment
  CHSC101151  Lathyrus sulphureus Lowell Ahart 2009-5-15 15695 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
  SEINET10841170  Lathyrus tingitanus Mary Susan Taylor 1980-5-27 Taylor 2716 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC25280  Lavandula officinalis K. R. Stern 1977-6-25 Butte Comment
  CHSC30389  Layia fremontii J. D. Jokerst 1980-4-17 600 Butte Top of North Table Mt. 419 Comment
  UCD133900  Layia fremontii L. Ahart 1971-4-13 69 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC274354  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  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
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC19949  Lepidium nitidum M. S. Taylor 1975-3-10 410 Butte Ca. 30 yds s of Covered Bridge on Butte Creek, ca. 8 mi e of Chico. Comment
  CHSC37366  Lepidium nitidum R. A. Schlising 1982-4-24 4230 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. At pool margins. Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  CHSC40530  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UCR237300  Lepidium strictum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18748 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CDA2225  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise Comment
  CAS-BOT-BC273955  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC113099  Leptochloa fusca subsp. fascicularis Lowell Ahart 2013-10-12 19109 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC34196  Leptochloa fusca subsp. fascicularis J. D. Jokerst; L. Ahart 1981-9-26 1496 Butte Ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  SEINET10927696  Leptochloa fusca subsp. fascicularis Lowell Ahart 1991-9-14 Ahart 6721 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Valley grassland. 46 Comment
  CHSC10761  Leptosiphon acicularis Lowell Ahart 1962-4-9 Butte Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  CHSC1277  Leptosiphon bicolor P. Delaplane 1965-3-23 77 Butte H. Wurlitzer Ranch ca. 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC40675  Leptosiphon bolanderi J. D. Jokerst 1984-4-6 1963 Butte Just north of Kunkle Resv ca. 1/2 mile, south of Lago Vista Rd ca 1/2 mile. Comment
  CHSC109164  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC86596  Leptosiphon filipes L. P. Janeway 2003-5-7 7779 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CAS-BOT-BC341795  Lessingia nemaclada R. F. Hoover 1965-10-16 9720 Butte Deer Creek Road east of Chico Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  CAS-BOT-BC342063  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  CHSC42032  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  CHSC43878  Leucothoe davisiae L. P. Janeway 1987-6-13 2218 Butte Along Concow Rd, just SW of jct with road to Five Corners and Stirling City. 1188 Comment
  UCR7826  Leucothoe davisiae Wm. Horn Jr. 1964-7-1 640701- 01 Butte 9 miles east of De Sabla 1159 Comment
  CHSC38072  Lewisia nevadensis R. E. Preston 1982-7-1 324 Butte At margin of meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  UC1609486  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n Honcut (on w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC31850  Limnanthes alba L. Ahart 1971-4-21 75 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  CHSC1005  Limnanthes alba subsp. alba Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC48596  Limnanthes alba subsp. alba Vernon Oswald 1988-5-17 3311 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  SEINET12183092  Limnanthes douglasii G. C. Halcomb 1978-1 3 Butte ca 1 mi E of Chico at intersection of Bruce Rd. and Skyway Rd. 100 yds WNW of Bruce Rd 70 Comment
  SEINET3450926  Limnanthes douglasii subsp. nivea Unknown 2003-4-10 10083 Butte Oroville, Oroville, about 2.5 air miles north, top of South Table Mountain, along a small drainage southwest of the 'sunken area 310 Comment
  CHSC24768  Limnanthes douglasii subsp. rosea P. J. Welch 1976-4-12 9 Butte At edge of vernal pool ca. 0.3 mi n of the Skyway and ca. 25 yds e of Notre Dame Blvd., within Chico city limits (se corner). 60 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) 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
  CHSC67561  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3046 Butte Roadside ditch adjacent to Keefer Rd. ca. 0.25 mi W of Cohasset Hwy. Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  JEPS102311  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte 4 air miles SE of Gridley ( one of the large holding ponds on S side of Evans-Reimer Rd, 1 mi E of Pennigton Rd, Gray Lodge Waterfowl Management Area); ; <coords. cont.: NW corner> 22 Comment
  RSA769681  Linanthus bicolor L. Ahart 2009-4-22 15585 Butte Along Guardians Trail, just south of 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. 382 Comment
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  SD7464  Linanthus dichotomus Mrs. R. M. Austin 1883-1 Butte Butter Co., Calif Comment
  SEINET10837197  Linanthus filipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4257 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC35091  Linanthus pungens R. A. Schlising; R. Banchero 1980-7-28 3930 Butte E of Jonesville, on road toward Scotts John Creek. 1889 Comment
  JEPS58544  Linanthus pygmaeus R. M. Austin Mar 1886 168 Butte e of Chico Comment
  CHSC113530  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 Butte Near a small drainage, 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. 88 Comment
  CHSC31875  Lindernia dubia var. anagallidea L. Ahart 1973-6-21 255 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC240367  Linnaea borealis subsp. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  JEPS95950  Lipocarpha aristulata Lowell Ahart 1999-8-13 8146 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
  CHSC25472  Lithocarpus densiflorus Hayes; Warner 1977-9-11 67 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CHSC88996  Lithocarpus densiflorus H. Gray 2003-6-3 Butte Plumas National Forest. Bald Rock trail parking area. 762 Comment
  RSA123003  Lithocarpus densiflorus var. densiflorus C. G. Albertus 1933-7-25 51 Butte One mile north of Powellton. 1098 Comment
  CAS-BOT-BC435491  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile S of Lumpkin Ridge Road, about 1 1/2 miles E of Camp 18, about 8 miles E of Feather Falls 1280 Comment
  CHSC4032  Lithophragma parviflorum Sadie Gualtieri 1967-3-6 Butte Collected: On Skyway to Paradise, 3 to 5 miles outside Chico, open fields on N. side hiway. Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  UC1206542  Lithophragma tenellum E. B. Copeland 1931-6-19 Butte Jonesville at The Summit; Jonesville at The Summit Comment
  CHSC2363  Lithospermum californicum R. Carter 1965-5-1 194 Butte Found on Bean Creek Rd., 2 mi. SE of intersection with Bald Rock Rd., on E bank above road. 1005 Comment
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC30307  Logfia gallica M. S. Taylor 1980-5-27 2681 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  RSA713011  Lolium perenne subsp. multiflorum L. Ahart 2005-12-11 12519 Butte Rice Experiment Station, between the Main Ditch and Stine lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC271208  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  CDA35635  Lolium temulentum J. R. Keck Jr. 1981-5-13 PDR# 330199 Butte Oroville. 0 Comment
  CHSC3187  Lomatium caruifolium var. denticulatum Dona Kingsford 1966-3-12 Butte Location 1.5 miles SW of Hooker Oak Tree, Chico. Comment
  UC726872  Lomatium caruifolium var. denticulatum A. A. Heller 1938-4-23 15056 Butte 1/4 mi. e. Jarboe Pass (on State Hwy. #24) Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  CHSC28971  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; M. S. Taylor 1980-11-24 453 Butte On top of rimrock which creates the waterfall ca 0.5 mi E of Richardson Springs. Comment
  UCD127633  Lomatium dasycarpum subsp. tomentosum L. Ahart 1975-5-12 768 Butte along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42477  Lomatium macrocarpum Lowell Ahart 1987-5-11 5616 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC62411  Lomatium macrocarpum B. Castro 1987-5-21 115 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 493 Comment
  CHSC116692  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 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 southeast of Oroville. 57 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 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
  POM78231  Lomatium vaginatum C. C. Bruce 1897-04 2058 Butte Butte Creek Comment
  CAS-BOT-BC240446  Lonicera hispidula C. R. Quick 1941-6-8 41 -05 Butte About 2 miles S. of Big Bar Mt. Comment
  CHSC109121  Lonicera hispidula Lowell Ahart 2012-2-22 17739 Butte On the high east bank of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 Comment
  POM67639  Lonicera hispidula var. vacillans C. C. Bruce 1897-06 1809 Butte [No location data on label] Comment
  CAS-BOT-BC240688  Lonicera interrupta J. F. Emmel 1970-4-5 252 Butte Mud Creek near Ponderosa Way 670 Comment
  SEINET10905410  Lonicera interrupta Mary Susan Taylor 1977-6-25 Taylor 1373 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  POM260437  Lotus argophyllus var. fremontii L. S. Rose 1940-5-30 40424 Butte Feather River Canyon, 25 mi. ne of Oroville. 610 Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  SEINET10452366  Lotus micranthus Mary Susan Taylor 1974-4-20 Taylor 180 Butte Ca. 10 yds W of roadside, Richardson Springs, ca. 6 mi N of Chico. Comment
  SEINET10940035  Lotus nevadensis Lowell Ahart 1985-5-31 Ahart 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  UC204726  Lotus purshianus var. purshianus A. A. Heller 11615 Butte border of Chico meadows Chico Comment
  SEINET10874146  Lotus strigosus Lowell Ahart 1983-5-28 Ahart 4021 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC112880  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CHSC38504  Lupinus albifrons Vernon Oswald 1983-4-1 252 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  SFV11556  Lupinus albifrons M. L. Vincent 1965-4-16 618 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  UC726692  Lupinus albifrons A. A. Heller 1919-6-7 13223 Butte Snow Mountain; ; Snow Mt., Butte Co. Comment
  CHSC91265  Lupinus apertus L. P. Janeway 2005-5-29 8405 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  SEINET5767544 Image available Lupinus arbustus subsp. silvicola E. B. Copeland 1930-1 s.n. Butte Jonesville 1600 Comment
  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  CHSC48525  Lupinus bicolor var. pipersmithii Vernon Oswald 1985-3-17 1686 Butte Peter Ahart Ranch ca. 2 mi ne of Honcut. 32 Comment
  CHSC106867  Lupinus bicolor var. tridentatus Lowell Ahart 2011-5-1 17340 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10452071  Lupinus densiflorus Mary Susan Taylor 1976-4-27 Taylor 1097 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  RSA31972  Lupinus formosus var. robustus A. A. Heller 1942-5-18 16478 Butte A short distance west of the Hooker Oak, east of Chico. Comment
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC23667  Lupinus microcarpus var. densiflorus M. S. Taylor 1976-4-27 1097 Butte On n side of Ponderosa Way, ca. 4 mi e of junct of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC34685  Lupinus microcarpus var. densiflorus M. S. Taylor 1981-5-1 3589 A Butte NW corner of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 mi n of Oroville. 91 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  RSA0072103  Lupinus nanus Daisie Huang 2006-4-15 06041567 Butte Upper Bidwell Park, Horseshoe Lake. 114 Comment
  RSA739693  Lupinus nanus John Dittes, Josephine Guardino 1991-4-19 339 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 air-miles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee., Ca. 3.8 air-miles east of intersection of State Hwy 99 and State Hwy 14. Rock outcrop on plateau west of Cherokee Road near middle tributary of Campbell Creek at east end of Beatsons Hollow. 366 Comment
  UC865523  Lupinus nanus A. A. Heller 1915-5-25 11890 Butte on the Forbestown road 15 mi e Oroville; e of Oroville 457 Comment
  UCD69696  Lupinus nanus Ellen Hammond 1982-4-18 17 Butte Top of Table Mountain, along parking area. 396 Comment
  SBBG121558  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte near E shores of Lake Wyandotte, ca. 7.0 air km ESE of Oroville Dam 422 Comment
  UCD109078  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  CHSC38511  Lupinus nanus var. vallicola Vernon Oswald 1983-5-7 440 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  SEINET10452665  Lupinus stiversii Mary Susan Taylor 1981-5-6 Taylor 3627 A Butte T20N R6E ne sec 33. Forbestown quad. N side of Ponderosa Way, 0.2 mi N of small bridge over Sucker Creek, ca. 3 air mi E of Enterprise Bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1100 ft. 335 Comment
  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
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC29251  Luzula macrantha M. S. Taylor 1976-4-24 1076 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
  CHSC36524  Luzula macrantha L. Ahart 1982-5-8 3411 Butte On the north slope above the dirt road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  CHSC55303  Luzula parviflora Lowell Ahart 1991-8-25 6707 Butte Along Haphazard Creek, about 1 mile northwest of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles northeast of Brush Creek. 1219 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS114701  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, about 400 yds SW of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  JEPS110477  Lycopus americanus Lowell Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  JEPS119953 Image available Lythrum salicaria Lowell Ahart 2012-8-22 18422 Butte About 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC54341  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CHSC84146  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the east 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
  CAS-BOT-BC344313  Madia exigua Lowell Ahart 1982-6-15 3561 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC116221  Madia exigua Lowell Ahart 2015-6-16 20231 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS124120  Madia exigua Lowell Ahart 2015-6-6 20201 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM362160  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC105807  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  RSA774146  Madia glomerata L. Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC342966  Madia gracilis Lowell Ahart 1983-7-29 4232 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC34710  Madia gracilis M. S. Taylor; R . Schlising, L. Ahart 1980-5-31 2752 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi se of Paradise. 441 Comment
  SD5628  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CAS-BOT-BC345237  Madia subspicata Lowell Ahart 1978-7-15 s.n. Butte Near North Honcut Creek. Peter Ahart Ranch. Honcut Comment
  CHSC47079  Maianthemum stellatum R. A. Schlising; L. Janeway 1988-7-1 4553 Butte N part of county, NE of Snow Mountain. Comment
  CAS-BOT-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  SEINET10475286  Malacothrix floccifera Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4723 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC43735  Malus Vernon Oswald 1987-3-30 2300 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 70 Comment
  JEPS95294  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  SEINET10479979  Malva parviflora Mary Susan Taylor 1982-4-28 Taylor 4374 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  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
  SEINET10834130  Marsilea vestita Mary Susan Taylor 1980-8-15 Taylor 3253 Butte T21N R2E nw sec 36, Hamlin Canyon quad. Pentz vernal pool, 0.4 mi SE of jct of Pentz (Benum) Rd, and Hwy 99, ca. 10 mi S of Chico; Valley Grassland. With E. Pierce. 55 Comment
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC3309  Matthiola incana M. Gregg 1966-4-13 68 Butte Corner of 20th and Salem Streets in Chico. In flower bed. Comment
  CHSC90233  Meconella californica Ross L. Jones 1989-4-12 24 Butte Ca. 100 m s of Butte Creek and 200 m w of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  CHSC75971  Medicago polymorpha Lowell Ahart; Vernon Oswald 1999-8-13 8162 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC945  Medicago polymorpha A. Koopman 1929-3-5 Butte CSC Campus. 57 Comment
  CHSC947  Medicago polymorpha D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  JEPS122207  Medicago polymorpha Lowell Ahart 2014-4-25 19406 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  CDA43101  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills.; Upper Bidwell Park, Chico; along the well-developed steep un-official trail +/- under the upper powerlines, connecting Upper Trail to North Rim Trail. Comment
  CHSC70851  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CDA22913  Melica aristata L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 of a 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. Comment
  CHSC67412  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2218 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 599 Comment
  UC600751  Melica fugax H. F. Copeland 1932-6-29 Butte between Jones Creek and Willow Creek; Jonesville Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  SEINET10508161  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4216 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 Comment
  UCD108073  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte Mt. Ida Ranch, 10 miles east of Oroville. Comment
  JEPS119627  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte About 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC52227  Mentha X gracilis L. P. Janeway 1988-5-30 2719 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 3/4 mi NE of the power lines. 152 Comment
  CHSC757  Mentha canadensis V. Holt; M. Underhill 1952-7-9 Butte 56 Comment
  CHSC65168  Mentha pulegium Lowell Ahart 1995-8-19 7619 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC28696  Mentha spicata M. S. Taylor 1979-9-9 1923 Butte Inskip on the Skyway. 1467 Comment
  RSA4233  Mentzelia dispersa E. B. Copeland 1929-7-19 s.n. Butte Jonesville. Along Butte Creek. 473 Comment
  CHSC52135  Micranthes bryophora L. P. Janeway; R. A. Schlising 1988-7-22 3060 Butte Shaded flat in woods on the SW slope of upper Coon Hollow. 1859 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC4656  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; slope ca. 25 yds. up slope on S side canyon. Comment
  CHSC59303  Micropus californicus J. L. Guardino 1992-4-18 11 Butte On southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  POM57380  Micropus californicus E. B. Copeland 1903-5-2 s.n. Butte Chico 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
  JEPS108852  Micropus californicus var. californicus Lowell Ahart 2006-5-10 12624 Butte Road cut bank, on the north 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
  CAS-BOT-BC348694  Microseris acuminata K. L. Chambers 1952-5-17 411 Butte 9.4 mi. s. of Forest Ranch P. O. on Hwy. 32 from Chico to Lake Almanor, west rim of Little Chico Creek Canyon Comment
  CHSC83935  Microseris sylvatica L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7756 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.9 km north of the Spillway Boat Ramp. 280 Comment
  CHSC92560  Microsteris gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  HSC43116  Mimulus angustatus Maralyn O'Meara 1974-4-20 283 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  UC600647  Mimulus bicolor E. B. Copeland 1931-5-9 Butte Jonesville Comment
  RSA0119044  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  HSC86826  Mimulus glaucescens S. Villard 1974-4-26 22 Butte Around Covered Bridge on Humbug Rd., ca. 6 mi. E of Chico Comment
  RSA178677  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale Grade about 5 miles from Paradise Comment
  CHSC118860  Mimulus guttatus Christopher T. Ivey 2017-5-27 392 Butte Honeyrun Road, about 6.5 km NE of bridge crossing Butte Creek, S side of road. 453 Comment
  JEPS104643  Mimulus guttatus Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 497 Comment
  JEPS121951  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC44793  Mimulus moschatus R. Banchero 1980-6-19 254 Butte Along Concow Rd 1.3 mi N of its jct with Hwy 70, 0.3 mi N of the town of Concow. 518 Comment
  RSA717286  Mimulus tricolor L. Ahart 2005-5-28 11825 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. 67 Comment
  CHSC6292  Minuartia californica W. O. Baum 1967-3-12 6 Butte In triangle area, on e side of Cohasset Rd. and 3.2 mi n of Chico. 60 Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC43378  Minuartia douglasii Lowell Ahart 1978-4-17 1646 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  CHSC77986  Moehringia macrophylla Lowell Ahart 2000-5-10 8336 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CDA3374  Mollugo verticillata L. Ahart 1998-7-1 8029 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC13711  Mollugo verticillata M. S. Taylor 1974-10-11 331 Butte On rocky sand bar on Sacramento River, ca. 1/4 mi n of washout, on River Rd, ca. 10 mi w of Chico. Comment
  CHSC42118  Mollugo verticillata Lowell Ahart 1986-11-14 5478 Butte On the drying margins 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
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  SEINET10498947  Monardella odoratissima subsp. pallida Mary Susan Taylor 1977-8-17 Taylor 1489 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CAS-BOT-BC220253  Monardella sheltonii Lewis S. Rose 1955-6-15 55105 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  CHSC43019  Monardella sheltonii L. P. Janeway 1987-6-5 2127 Butte Along OroQuincy Hwy 0.5 mi S of suspension br over Lake Oroville. 320 Comment
  JEPS87413  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  UC1606732  Monardella venosa B. Castro, J. D. Jokerst 1992-5-19 457 Butte unnamed canyon se Neal Road (ca. 200 ft nw of intermittent creek); Hamlin Canyon quad. 79 Comment
  RSA718313  Monardella villosa subsp. sheltonii L. Ahart 2006-6-9 12655 Butte on east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 386 Comment
  CDA2666  Monochoria vaginalis T. C. Fuller 1976-7-8 20150 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  CHSC50333  Montia chamissoi Vernon Oswald 1990-5-17 4218 Butte Meadow near the headwaters of Concow Creek, on the west side of Concow Rd. ca. 0.5 mile south-southwest of Flea Valley. Common in a marshy area along the creek at the foot of the meadow. 1097 Comment
  CAS-BOT-BC444610  Montia chamissoi Mrs. Marian L. Campbell 1916-7-4 s.n. Butte Nelsons Comment
  SEINET10572658  Montia diffusa Mary Susan Taylor 1981-4-28 Taylor 3568 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  HSC32652  Montia fontana David Johnson 1974-4-20 57 Butte Table Mtn. Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC101088  Montia fontana subsp. amporitana Lowell Ahart; John Dittes 2009-3-20 15513 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
  CHSC42480  Montia fontana subsp. amporitana Lowell Ahart 1987-5-12 5631 Butte On damp bare broken black lava, in a seep, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. 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
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  SEINET10572711  Montia minor Mary Susan Taylor 1979-3-31 Taylor 1965 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
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 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
  CHSC59049  Muhlenbergia filiformis Lowell Ahart 1992-7-21 6798 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  SACT001603  Muhlenbergia repens Herbert Copeland 1929-6-9 Butte In dry open places. 1500.0 Comment
  CHSC45215  Muhlenbergia rigens Lowell Ahart 1977-10-19 1602 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC78126  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC86110  Myosotis discolor L. P. Janeway; John Hunt 2003-4-22 7762 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  CHSC40322  Myosurus minimus Lowell Ahart 1985-4-21 4880 Butte Found near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC49674  Najas gracillima Vernon Oswald 1983-6-18 716 Butte Upper Bidwell Park, Chico, in Horseshoe Lake. Along the n side of the lake. 100 Comment
  UCD19361  Najas guadalupensis subsp. guadalupensis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 852 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  CHSC44042  Nama lobbii L. P. Janeway 1987-6-27 2329 Butte Along Little Kimshew Cr just north of Ramsey Bar. Open sandy DG among mtn. whitethorn. Site of old Ramsey Bar mining and timber activities. 1341 Comment
  UC572408  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e of Chaparral House (Lassen National Forest, Paynes Creek Quadrangle); Lassen National Forest, Paynes Creek Quadrangle 1584 Comment
  CHSC35114  Navarretia capillaris R. A. Schlising 1980-7-16 3912 Butte N part of county NE of Butte Meadows and SW of Jonesville; meadow and streamside of Butte Creek near Cherry Hill Campground. Comment
  UC600661  Navarretia capillaris E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek (Jonesville); , btw Jones Creek and Willow Creek 1700 Comment
  SEINET12279150  Navarretia cotulifolia Unknown 1936-1 13045 Butte near Chico Comment
  UC426936  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  CHSC65457  Navarretia divaricata subsp. vividior Vernon Oswald 1986-5-6 1999 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CDA40077  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC1294  Navarretia leucocephala F. Hughes 1935-4-24 Butte Butte Creek Canyon. 121 Comment
  CHSC4163  Navarretia leucocephala R. Carter 1966-4-21 350 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side of Old Cherokee Rd., 6.55 mi. from Chico Rd., in vernal pool. 274 Comment
  CHSC52107  Navarretia leucocephala Kimberly J. Weir 1976-4-15 4 Butte In vernal pool, ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  SEINET10496828  Navarretia leucocephala Mary Susan Taylor 1986-5-6 Taylor 5623 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  UC1228175  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte 10 mi se Chico Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC26823  Navarretia tagetina M. S. Taylor 1978-5-7 1597 Butte In vernal pools, on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  RSA715673  Navarretia tagetina L. Ahart 2005-5-27 11813 Butte About 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  HSC38282  Navarretia tagetina Thomas W. Nelson, Jane P. Nelson 1976-5-10 2469 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SEINET10496837  Navarretia tagetina Mary Susan Taylor 1974-5-7 Taylor 230 Butte In patches on N side of Pentz Road, ca. 3 mi E of Hwy 99. Valley Grassland, with Brodiaea sp., Calochortus luteus. Comment
  SEINET10461216  Nemacladus interior Lowell Ahart 1984-6-8 Ahart 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  RSA0000011  Nemophila fallax C. C. Bruce 1897-03 2037 Butte [No location information on label.] Comment
  CHSC46196  Nemophila heterophylla L. P. Janeway 1988-7-2 2964 Butte Near the road to French Cr, 0.9 mi S of Coyote Gap. 1188 Comment
  CHSC96228  Nemophila heterophylla R. Fischer 2006-3-17 988 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 231 Comment
  RSA712988  Nemophila heterophylla L. Ahart 2006-4-28 12544 Butte On the south side of a dirt road, on the west side of a small stream. A part of the south drainage of Beatson Hollow, about 0.5 miles northwest of the Iron Gate along Cherokee Road, North Table Mountain. About 7 air miles north of Oroville. 302 Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC114960  Nemophila pedunculata Lowell Ahart 2015-3-14 19949 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  CHSC38462  Nemophila pedunculata Vernon Oswald 1983-4-25 385 Butte Upper Bidwell Park, Chico, on the north rim ca 500 ft e of the power lines. 249 Comment
  JEPS117154  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  RSA0116276  Nemophila spatulata Lowell A. Ahart 2014-7-4 19555 Butte Road edge of the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC6627  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  UC1609479  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  JEPS117257  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  UCD113663  Oemleria cerasiformis Vernon H. Oswald 1994-3-30 6034 Butte In Beatson Hollow on North Table Mtn., along a jeep road 0.7 mi W of Cherokee Rd. Branch. 304 Comment
  CHSC93086  Olea europaea L. P. Janeway 2006-2-5 8555 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; between North Rim Trail and the northern boundary fence, 650 m northeast of the upper high-power lines, about 50 m southeast of the fenceline. 283 Comment
  CHSC98693  Olea europaea L. P. Janeway 2007-12-17 9226 Butte Northern Sierra Nevada Foothills. About 15 m east of the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north of the railroad bridge. At base of old abandoned railroad or road cutbank. 73 Comment
  CAS-BOT-BC71182  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CHSC11847  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville. 1550 Comment
  CHSC25436  Oreostemma alpigenum var. andersonii Marc Hayes; Warner 1977-9-11 71 Butte Ca. 10 m N of Humboldt Rd., exactly 6.9 mi from the turn to Butte Meadows along Hwy 32. 1219 Comment
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  JEPS80619  Orobanche fasciculata M. S. Taylor 1981-5-29 3814 Butte ca. 3 air mi. s.e. Pulga (ca. 0.5 mi. n. of 22N31, Chino Ridge); Pulga SW Quad., Chino Ridge 853 Comment
  SEINET10500398  Orobanche vallicola Mary Susan Taylor 1974-10-11 Taylor 330 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC91671  Orthilia secunda L. P. Janeway; Matt Brown 2005-7-13 8491 Butte Northern High Sierra Nevada. Plumas National Forest; Along Cedar Creek 0.4 km south of the Plumas County line; about 1.9 km northwest of North Fork Feather River. 1244 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
  JEPS93985  Osmorhiza brachypoda Vernon H. Oswald 1998-7-9 9253 Butte Feather Falls Trail starting at end of Bryant Ravine Rd. n. of town of Feather Falls (ca. 0.4 mi. n. of the trailhead near the junction of the upper and lower trails) 701 Comment
  SEINET519222  Osmorhiza depauperata V. H. Oswald 1998-7-8 9248 Butte Colby Mt. Lookout Rd. (26N57) 0.9 mi N of Humboldt Rd. at Jonesville. 1561 Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  UCD150723  Packera eurycephala Collector Unknown 1977-5-21 s.n. Butte California, Butte County. Near Pulga Canyon. Slopes of the Feather River. Elevation estimated by label-maker. 457 Comment
  CAS-BOT-BC316891  Packera eurycephala var. lewisrosei John Thomas Howell 1959-9-26 35092 Butte Pulga Bridge, north fork Feather River Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  CHSC108989  Parentucellia viscosa Lowell Ahart 2012-4-30 19942 Butte Depression along the side of the 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
  CHSC46411  Parentucellia viscosa Lowell Ahart 1989-5-23 6242 Butte Growing near a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC31538  Paronychia ahartii L. Ahart 1978-4-13 1636 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC88476  Paspalum dilatatum L. P. Janeway 2004-6-20 8138 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC51865  Paxistima myrsinites L. P. Janeway 1988-6-14 2781 Butte Near Ewalt Camp, mdw along W Br Butte Cr 2.0 mi E from hwy 32 by dirt rd. Near small creeklet. 922 Comment
  SEINET10939921  Paxistima myrsinites Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5224 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  UC103230  Pedicularis densiflora Mrs. R. M. Austin July 1890 111 Butte Colby Comment
  CHSC27958  Pellaea andromedifolia Sam M. Grossberg 1978-4-22 21 Butte North Table Mountain, ca. 2.5 mi nne of Cherokee Road, 6.0 mi n of Oroville. 365 Comment
  CHSC28881  Pellaea mucronata M. S. Taylor 1980-2-24 2323 Butte On the east branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  CHSC30367  Pellaea mucronata J. D. Jokerst 1979-3-20 1151 Butte Top of North Table Mt, W edge at the waterfalls of the S branch of Coal Cr. Canyon. 365 Comment
  SEINET10834168  Pellaea mucronata Mary Susan Taylor 1980-4-18 Taylor 2524 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
  SEINET10966241  Pellaea mucronata Mary Susan Taylor 1979-10-13 Taylor 2265 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  CHSC99572  Penstemon azureus var. azureus L. P. Janeway 2008-5-26 9372 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  SEINET10547579  Penstemon azureus var. azureus Lowell Ahart 1985-5-15 Ahart 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  NY609844  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville 1600 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CDA13270  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-9 13118 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  POM195084  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-25 981 Butte 4 miles W of Forbestown. 762 Comment
  SFV10338  Penstemon laetus var. leptosepalus M. L. Vincent 1963-6-8 400 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 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
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  RSA79777  Penstemon rydbergii var. oreocharis F. W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road. Comment
  HSC66081  Pentagramma triangularis M. S. Taylor 1980-4-16 2483 Butte Lake Oroville State Recreation Area, 0.5 mi. SE of Parish Camp, just S of Lime Saddle Memorial Park 5 mi. S of Paradise 305 Comment
  CAS-BOT-BC77175  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi N of jct. of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC33902  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-15 3741 Butte Both sides of rd 22N92 between its junction with 23N00.1 and West Branch French Creek, ca. 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 929 Comment
  CHSC83907  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 309 Comment
  UC122975  Pentagramma triangularis subsp. triangularis Mrs. R. M. Austin 1879-1 Butte Cold Canyon Comment
  UC195447  Perideridia bolanderi subsp. involucrata A. A. Heller 1914-7-13 11572 Butte on volcanic hills 5 mi e Oroville Comment
  CHSC1971  Perideridia lemmonii E. Walker 1932-7-1 Butte Magalia. 731 Comment
  CHSC40217  Perideridia lemmonii Lowell Ahart 1985-6-17 5064 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC40230  Perideridia lemmonii Vernon Oswald 1985-8-1 1919 Butte Jordan Hill Rd. between Concow Rd. and Magalia, 0.5 mi s of road to Sawmill Pk. 926 Comment
  CHSC91467  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  CHSC37113  Persicaria hydropiper L. Ahart; M. S. Taylor 1982-10-11 3864 Butte Along edges of large duck pond, ca. 0.1 mi w of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC46202  Persicaria hydropiperoides L. P. Janeway 1986-9-20 1870 Butte Seasonally draining side creek on NW side of Little Chico Cr, near River Rd ca 2 mi S of Chico River Rd. 36 Comment
  CAS-BOT-BC419178  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte Hills 8 miles north of Oroville. Along Dry Creek about 5 miles south of Pentz Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  UCR237312  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18763 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  RSA421517  Phacelia bicolor Unspecified 1897-1 s.n. Butte Sandy valley, open flats. Comment
  CHSC69213  Phacelia egena J. D. Jokerst 1984-5-19 2022 Butte Along edge of road cut for Pulga Road within 100 feet of its junction with Highway 70 in the canyon of the North Fork of the Feather River. Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  CHSC39114  Phacelia heterophylla subsp. virgata R. A. Schlising 1982-6-23 4299 Butte N of Concow, along Dogwood Creek. 1121 Comment
  CHSC39101  Phacelia mutabilis R. A. Schlising 1981-7-14 4147 Butte About 0.3 mi sw of Humbug Summit in n part of county. 1981 Comment
  UC1051795  Phacelia mutabilis L. R. Heckard 1951-8-7 182 Butte between Chaparral and Butte Meadows Comment
  RSA152187  Phacelia purpusii Lincoln Constance, E. Moleseed, John Weiler 1960-6-12 3677 Butte 3 miles above junction of Highway 32 and Butte Meadows Road, 33 miles northeast of Chico. 1220 Comment
  SEINET10497028  Phacelia racemosa Lowell Ahart 1985-7-16 Ahart 5146 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CHSC110226  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  UC1594547  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC42519  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte In a rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC2173  Phalaris paradoxa D. Bower 1953-8-27 Butte 1A Llano Seco. 30 Comment
  SEINET10949139  Phalaris paradoxa Lewis S. Rose 1937-6-11 Rose 37381 Butte 7 mi W of Honcut. Open fields 23 Comment
  CAS-BOT-BC77379  Philadelphus lewisii Clarence R. Quick 1952-7-1 52 -113 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC33856  Phleum pratense J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 849 Butte N of and adjacent to Scout Rd 1.1 mi W of its jct with Humboldt Rd in Chico Meadows. 1341 Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  SJSU7853  Phoradendron bolleanum F. S. Gereb 1968-5-4 88 Butte above Paradise Reservoir, near Paradise 609 Comment
  CHSC33801  Phoradendron libocedri M. S. Taylor 1981-4-8 3509 Butte On serpentine, N side of spur rd, ca. 1/3 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  HSC72947  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte 100 ft. E of Pentz-Magalia Hwy., 1 mi. S of Kunkle Reservoir, 3 mi. S of Paradise 412 Comment
  RSA30417  Phoradendron villosum A. A. Heller 1914-1-28 11157 Butte Near Hog Springs, 6 miles E of Chico. Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CHSC51930  Physalis lancifolia L. P. Janeway 1986-9-20 1887 Butte Inside the bend at the jct of Chico-Butte City Hwy and Road 48. 28 Comment
  CDA43410  Phytolacca americana D. G. Kelch 2012-9-19 12 .355 Butte Oroville, immediately west of sewage treatment plant. Comment
  JEPS115350  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CAS-BOT-BC76940  Pilularia americana Lowell Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC1609400  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte ca. 2 mi w Biggs (on n side of Biggs Princeton Rd.) 30 Comment
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  CHSC23635  Pinus contorta subsp. murrayana M. S. Taylor 1976-4-1 1048 Butte 500 m s of Old Humboldt Rd. ca. 1/2 mi w of Butte Creek, Butte Meadows. 1706 Comment
  POM127000  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows. 1280 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  CHSC79625  Piperia transversa G. F. Hrusa; T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 820 Comment
  CHSC27196  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  CHSC27273  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10529834  Pityrogramma triangularis Mary Susan Taylor 1974-4-30 Taylor 199 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10529839  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1991 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
  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
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM252790  Plagiobothrys fulvus var. fulvus A. A. Heller 1938-4-23 15044 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  CHSC38276  Plagiobothrys greenei Vernon Oswald 1983-3-19 200 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. ca. 300 ft w of Parking Area M (1.2 mi e of the power lines). 146 Comment
  CAS-BOT-BC228256  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 s.n. Butte Jonesville 1500 Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  JEPS124228  Plagiobothrys nothofulvus Lowell Ahart 2015-3-27 19969 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north Oroville. Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 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
  SEINET10497554  Plagiobothrys nothofulvus Mary Susan Taylor Taylor 993 Butte Bidwell Park, Chico. Comment
  CHSC39029  Plagiobothrys scriptus Lowell Ahart 1983-4-10 3918 Butte Central part of county, north-east of highway 99 and Pentz Road about 1 mile. 65 Comment
  POM71619  Plagiobothrys stipitatus C. C. Bruce 1898-03 2417 Butte Sloughs. [No further location information.] Comment
  CHSC43473  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-5-2 1704 Butte On the edges of a small vernal pool, on the top of Table Mountain, near the large parking area on the top of Table Mountain, about 6 miles north of Oroville. 487 Comment
  RSA485317  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  CHSC29274  Plagiobothrys tenellus R. A. Schlising 1980-4-19 3567 Butte North of village of Feather Falls, along trail to Feather Falls (on Fall River) from ne. 792 Comment
  JEPS123911  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC46259  Planodes virginica Vernon Oswald 1989-4-20 3748 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between Butte Creek and Little Dry Creek n of Gridley-Colusa Hwy. In rice paddies. 18 Comment
  CAS-BOT-BC60824  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Peter Aharts Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC47455  Plantago coronopus Lowell Ahart 1968-5-8 19 Butte Growing along roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52097  Plantago coronopus Paul B. McKim 1979-4-21 10 Butte Ca. 11 mi n of Chico on Hwy. 99. 76 Comment
  SEINET10968933  Plantago coronopus Mary Susan Taylor 1982-4-28 Taylor 4346 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC90481  Plantago elongata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11663 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC24970  Plantago erecta T. F. Burnham 1976-4-20 Butte 50 ft s of Cana Pine Creek Road, at the intersection of Hwy 99 and Cana Pine Creek Road. 97 Comment
  UCSC008325  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte North side of South Rim Trail, west of the power lines, Upper Bidwell Park, aout one (air) mile northeast of Chico. 143 Comment
  UCSB50205  Plantago erecta Gray, John 1976-4-10 Butte Along roadside; 4 miles south of Oroville on Highway 70; T19N R3E Sec. 25, SE quarter 30 Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC42550  Plantago lanceolata Lowell Ahart 1987-5-6 5531 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. 274 Comment
  JEPS95936  Plantago major Lowell Ahart 1999-8-13 8173 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
  UCSC008327  Plantago pusilla Lowell Ahart 2012-5-4 17838 Butte 302 Comment
  CHSC113501  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 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
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET12102784  Platystemon californicus Unknown 5 s.n. Butte Chico Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC44360  Plectritis ciliosa Lowell Ahart 1988-3-27 5939 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 335 Comment
  UCD137545  Plectritis congesta subsp. brachystemon Michael A. Vincent; Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  CHSC6058  Poa E. Parreno 1968-3-15 41 Butte Right side of rd. leading to Missle Base, side intersecting with Keefer Rd., Chico. 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
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC4373  Poa pratensis M. M. Gregg 1966-4-25 94 Butte Between Ed-Psy. Building and the Life Science Building, in a vacant lot, on CSC campus, Chico. Comment
  SEINET10659346  Poa scabrella Prouty 1980-4-17 PROUTY 80 .99 Butte Oak-Foothill Woodland off of Yankee Hill Rd. T21N, R4E, Sec 4, SE 1/4. 518 Comment
  CAS-BOT-BC236368  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst; R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. Ca. 4 miles E of Lake Madrone 1016 Comment
  CHSC38849  Poa secunda subsp. secunda Vernon Oswald 1983-3-13 150 Butte Upper Bidwell Park, Chico, 50 ft w of Parking Area M (between Diversion Dam and Salmon Hole). 140 Comment
  CHSC40460  Poa secunda subsp. secunda Lowell Ahart 1985-5-15 4996 Butte On the sides of a dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC59850  Poa secunda subsp. secunda R. E. Preston 1982-3-6 187 Butte At boundary of Upper Bidwell Park, n of Horseshoe Lake, Chico. 188 Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  CHSC42197  Pogogyne zizyphoroides John E. Hunter 1986-4-12 52 Butte Ca 1 km e of Chico, 50 m s of Hwy 32. 75 Comment
  UC726650  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte on US Highway 99E, near the Cana Road. Hartweg got it in this neighborhood, in Valle Sacramento. Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  UC1509625  Polygonum bolanderi L. Ahart 1983-8-16 4280 Butte ca 3 mi sw Butte Meadows (near Humboldt Road) 1450 Comment
  JEPS50604  Polygonum californicum Dr. C. C. Parry Nov. 1881 Butte Chico Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  UCR66524  Polygonum douglasii H. F. Copeland 1928-8-18 0318 Butte Jonesville, Butte Creek Canyon 1529 Comment
  JEPS103454  Polygonum lapathifolium Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS118058  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 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
  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
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  UC203615  Polygonum persicaria A. A. Heller 1914-8-20 11690 Butte about 5 mi s Pentz; Dry Creek Comment
  POM312540  Polygonum persicaria H. L. Mason, Verne Grant 1946-9-4 13111 Butte 833 Canal, W Gridley Road. Comment
  CHSC39130  Polygonum polygaloides subsp. kelloggii Robert Schlising; R. Banchero 1980-6-2 3628 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC58947  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC103173  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  CAS-BOT-BC71860  Polypodium californicum Sam M. Grossberg 1978-4-21 14 Butte ca. 0.6 mi. WNW of Highway 32, 9.2 mi NE of Chico 350 Comment
  CAS-BOT-BC71874  Polypodium californicum A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill Comment
  CHSC115494  Polypodium calirhiza L. P. Janeway 2015-11-18 11632 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC32151  Polypodium calirhiza L. Ahart 1976-2-19 1013 Butte Near Forbestown. 609 Comment
  CHSC34682  Polypodium calirhiza M. S. Taylor 1980-4-1 2420 Butte Along s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC42503  Polypodium calirhiza Lowell Ahart 1987-5-9 5598 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  CAS-BOT-BC76829  Polypodium glycyrrhiza James D. Jokerst; M. S. Taylor 1980-11-14 0440 Butte Slopes adjacent to McCabe Cr. ca. 200 m. E of its jct with Lumpkin Rd. Comment
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS87484  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  SEINET10602405  Polypogon interruptus Lowell Ahart 1990-5-25 Ahart 6489 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  SEINET11665625  Polypogon interruptus Unknown 1977-1 1365 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC27562  Polypogon maritimus Robert Schlising 1978-5-17 3264 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc road. 670 Comment
  CHSC37109  Polypogon maritimus L. Ahart 1982-10-15 3888 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CDA34163  Polypogon monspeliensis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 0.75 miles (air), west of Highway 32. Approximately, 10 miles northeast of Chico. Comment
  CHSC47634  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte In the gutter along Lower Forbestown Road or Ponderosa Way, about 1/4 mile north of the intersection of Forbestown Road and Robinson Mill Road. 701 Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CHSC4148  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 Comment
  CHSC103111  Polystichum imbricans subsp. curtum Lowell Ahart 2009-6-30 15971 Butte Around large boulders 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
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CAS-BOT-BC72297  Polystichum imbricans subsp. imbricans Clarence R. Quick 1952-7-1 52 -109 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC86424  Polystichum imbricans subsp. imbricans R. D. Fischer; Paul Maslin 2004-2-7 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  UC123295  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin May, 1896 198 Butte Forest Ranch Comment
  CHSC50540  Polystichum lemmonii Vernon Oswald; Lowell Ahart 1990-6-20 4304 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1914 Comment
  UC1562401  Polystichum lemmonii Vernon Oswald and Lowell Ahart 1990-6-20 4304 Butte between Philbrook Reservoir and Carr Mine (s side Philbrook Creek, ca. 0.5 mi w of Butte-Plumas county line) 1914 Comment
  CHSC65689  Populus fremontii subsp. fremontii Vernon H. Oswald 1996-3-22 7250 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, S edge of Tract 2. 33 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28622  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC32133  Potentilla glandulosa L. Ahart 1977-5-22 1391 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48861  Potentilla glandulosa subsp. ashlandica Vernon Oswald 1987-6-9 2967 Butte Near the headwaters of Scotts John Creek, 3.3 mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  CHSC45606  Potentilla glandulosa subsp. reflexa L. P. Janeway 1987-6-5 2153 Butte Upper reach of Carey Cr where rd 22N89 crosses it 0.5 mi from OroQuincy Hwy. Along rd. 1097 Comment
  SEINET10483126  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1980-5-27 Taylor 2648 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 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. 249 Comment
  SEINET9791606 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC27210  Prunus cerasifera P. Moyer 1972-3-2 92 Butte N bank of Chico Creek, 100 ft. from Esplanade Bridge. 60 Comment
  UCR133591  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville 1524 Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  CAS-BOT-BC151219  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon east of Chico Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC357587  Pseudognaphalium stramineum A. A. Heller 1918-9-3 13087 Butte 8 miles north of Oroville Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC6614  Pseudotsuga menziesii var. menziesii M. MacArthur 1968-6-17 302 Butte Parking lot NE of building V, Chico State College campus. 60 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD77962  Psilocarphus chilensis Robert E. Preston 2005-3-24 2328 Butte Ca. 3.5 mi NW of Oroville, in field along E side of Table Mountain substation 53 Comment
  CHSC103710  Psilocarphus oregonus Lowell Ahart 2010-5-22 16721 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. 387 Comment
  CAS-BOT-BC361916  Psilocarphus tenellus Lowell Ahart 1980-4-30 2140 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC62505  Ptelea crenulata B. Castro 1987-5-18 112 Butte CA 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 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
  CHSC21378  Punica granatum M. S. Taylor 1975-6-21 779 Butte Ca. 50 ft w of Citrus St, on the n side of W end Ave, Chico. Comment
  CHSC44111  Purshia tridentata L. P. Janeway; R. A. Schlising 1988-7-22 3041 Butte Saddle between Coon Hollow and Chips Cr, Slope on Chips Cr side. 1905 Comment
  CHSC62562  Pycnanthemum californicum B. Castro 1993-7-7 468 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC44422  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC460581  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along dirt road on Fields Ridge, 4 miles SE of Feather Falls 792 Comment
  SD3516  Pyrola picta E. B. Copeland 1931-7-15 Butte Jonesville, coniferous woods 1600 Comment
  UC600606  Pyrola picta E. B. Copeland 1929-7-1 Butte Jonesville Comment
  UCD117808  Pyrola picta E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1600 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  SEINET13953409 Image available Quercus garryana A. A. Heller 1915-1 11816 Butte Stony ridges and uplands in red clay near Cohasset, where it is the principal chaparral shrub near the upper limit of the dirger pine belt. Comment
  CHSC36132  Quercus garryana var. breweri Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway, 3 mi w of Paradise. North of road ca. 15 m. 408 Comment
  UCD46119  Quercus garryana var. semota C. G. Albertus 1933-7-1 39 Butte southwest slope of Promontory Point. 1005 Comment
  CAS-BOT-BC105142  Quercus kelloggii John Thomas Howell 1962-6-15 37438 Butte Magalia 731 Comment
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  CHSC30864  Quercus lobata J. D. Jokerst 1979-4-2 1176 Butte Table Mt. East edge of mt, immediately S of Cherokee Rd. 396 Comment
  SEINET10839015  Quercus nigra Mary Susan Taylor 1975-6-22 Taylor 785 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CHSC112901  Ranunculus bonariensis subsp. trisepalus B. Castro; Robin Carter, Sabrina Bell 2011-5-16 1881 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, just NE of Western Canal and ca 0.8 mi N of jcn of Hwy 99 and Richvale Hwy/162E. 38 Comment
  CHSC23895  Ranunculus canus var. canus R. W. Conover 1975-4-18 1 Butte Cole Canyon area of Table Mtn., ca. 6 mi nw of Oroville, along creek 60 yds w of waterfall. 381 Comment
  CHSC45753  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 36 Butte N part of county at Crane Valley; in meadow. 1584 Comment
  CHSC29233  Ranunculus muricatus M. S. Taylor 1980-4-1 2416 Butte Drainage, between Notre Dam Blvd and Hwy 99, and the Skyway and Humboldt Rd, just e of Chico. 70 Comment
  JEPS107343  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 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
  UCD80703  Ranunculus muricatus CNPS SN Foothill Team 2005-3-23 SNFN 0064 Butte CDPR, Oroville State Recreation Area, along the North Fork Trail, on the Potter's Point Loop Trail, north of the intersection with Potter's Ravine Trail. 372 Comment
  CHSC52691  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 255 Butte S part of county near Bangor Hwy nw of Bangor. 182 Comment
  CHSC41287  Ranunculus occidentalis var. ultramontanus S. C. Morey 1983-7-21 505 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  POM268835  Ranunculus populago H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  CHSC31957  Raphanus raphanistrum J. D. Jokerst 1979-3-25 1157 A Butte At edge of Table Mountain, E edge of mountain N of Cherokee Rd. 396 Comment
  CHSC34565  Raphanus raphanistrum R. E. Preston; L. E. Preston 1982-1-1 157 Butte In almond orchard, e side of River Rd. ca. 1 mi s of Sacramento Ave.; Chico Landing site, ca. 5 mi w of Chico. Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  SEINET11526628  Raphanus sativus Harris, Heinze 1963-4-16 s.n. Butte Chico. 61 Comment
  CDA13732  Rhamnus purshiana var. purshiana G. F. Hrusa, T. D. Wilfred 1997-6-27 13910 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CAS-BOT-BC199744  Rhododendron occidentale var. californicum A. A. Heller 1913-6-7 10800 Butte Near Stirling 1074 Comment
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  RSA718795  Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC33898  Ribes nevadense M. S. Taylor 1981-4-14 3532 Butte S side of Ponderosa Way, ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  CHSC59982  Ribes nevadense Sharol Lindenstein 1989-3-26 7 Butte Plumas Nat'l forest, Hwy 70, ca. 3.5 mi sw of Sugar Loaf Mt., 2 mi nw of Cresta Powerhouse. 701 Comment
  RSA0022850  Ribes nevadense H. F. Copeland 1928-8-18 217 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC44353  Ribes roezlii Lowell Ahart 1988-3-28 5953 Butte On a steep basalt mountain side, about 1/10 miles south of Lumpkin Ridge road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
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Jan 9 2013
  CAS-BOT-BC198966  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC3420  Robinia pseudoacacia Judy Potter 1966-5-2 218 Butte Physical Science Bridge. Chico State College. Comment
  CAS-BOT-BC74464  Rorippa curvisiliqua Lowell Ahart 1987-5-6 5512 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-BC74470  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  CAS-BOT-BC74457  Rorippa curvisiliqua Lowell Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. 33 Comment
  CHSC98952  Rorippa nasturtium-aquaticum Lowell Ahart 2008-5-21 14788 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
  CHSC35645  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 229 Butte Western Canal, at jct with the Midway ca. 0.75 mi s of Nelson. 35 Comment
  CHSC33638  Rosa californica M. Merryman; R. A. Schlising 1979-9-23 46 Butte SW of Chico along Ord Ferry Rd, ca. 3.7 mi w of Dayton Four Corners. Just w of the meridian. Field edge at roadside. 35 Comment
  CDA32003  Rosa pisocarpa L. Ahart 2009-5-3 15800 Butte South of a small stream, meadow, about 30 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. Comment
  RSA718384  Rosa pisocarpa L. Ahart 2006-6-24 12857 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC43211  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-26 2287 Butte At Rag Dump. At mdw edge. 1173 Comment
  CHSC44348  Rosa rubiginosa Lowell Ahart 1988-4-30 5972 Butte Near a stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC90308  Rosa rubiginosa L. P. Janeway 1994-9-29 4758 Butte Northern High Sierra Nevada. Northeast side of Quartz Hill; overlooking Quartz Creek and Fall River Campground. 1310 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC42719  Rubus armeniacus Lowell Ahart 1987-6-9 5736 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10483596  Rubus parviflorus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4695 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA4645  Rubus parviflorus var. bifarius E. B. Copeland 1930-7-16 s.n. Butte Jonesville. 1600 Comment
  RSA699538  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E-side addition along Hwy 32. Located on sandy soil, W side Big Chico Creek near beginning of Yahi Trail. 91 Comment
  SEINET10483605  Rubus procerus Mary Susan Taylor 1978-7-21 Taylor 1820 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC158770  Rubus ursinus John Thomas Howell 1975-6-15 51077 Butte Butte Creek near Chico 60 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC28954  Rudbeckia hirta var. pulcherrima M. S. Taylor 1978-7-21 1831 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte county-Plumas county line. Comment
  HSC72720  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte 1 mi. S of Butte Plumas Co. line along W side Oroville-Quincy Rd. 1372 Comment
  SEINET10474887  Rudbeckia hirta var. pulcherrima Mary Susan Taylor 1978-7-21 Taylor 1831 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  JEPS114984  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte about 5 yards N of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetary, about 10 mi (air) NE of Oroville 305 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
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET11930159  Rumex conglomeratus Unknown 1982-1 3635 Butte Ahart Ranch, about 2 1/4 mi N and 1/4 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CAS-BOT-BC433781  Rumex pulcher John Thomas Howell 1959-9-20 34622 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC45579  Sagina apetala Lowell Ahart 1980-5-4 2215 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC42736  Sagina saginoides Lowell Ahart 1987-5-6 5516 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC445662  Sagittaria cuneata E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  JEPS124283  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte About 400 yards north of where Gilstrap Avenue makes a S turn, about 2 miles (air) from the center of Gridley. Comment
  CHSC108820  Salix babylonica Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC21075  Salix exigua var. hindsiana M. S. Taylor 1975-10-3 935 Butte In Sacramento River, ca. 10 mi w of Chico. 36 Comment
  POM218987  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 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
  CHSC38669  Salix laevigata Vernon Oswald 1983-3-31 236 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. ca. 1200 ft e of Parking Area N at Salmon Hole (1.4 mi e of the power lines). 176 Comment
  CAS-BOT-BC125176  Salix lasiandra var. lasiandra A. A. Heller 1917-7-26 12812 Butte Butte Meadows 1280 Comment
  CHSC108814  Salix lasiolepis Lowell Ahart 2012-4-9 17827 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
  NY187652  Salix lasiolepis L. Ahart 1987-4-30 5492 Butte Along North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles SE of Oroville 67.1 Comment
  SEINET10538854  Salix lasiolepis Mary Susan Taylor 1981-3-24 Taylor 3434 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC129576  Salix lasiolepis var. lasiolepis John Thomas Howell; Gordon H. True 1969-4-8 45487 Butte Near Pulga Bridge west of Pulga - Sierra Nevada 411 Comment
  CHSC65017  Salix lemmonii Vernon H. Oswald 1987-8-10 3204 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  JEPS121898  Salix lemmonii Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CAS-BOT-BC129488  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte Chico, on banks of Butte Creek Comment
  CHSC94971  Salix melanopsis Lowell Ahart 2006-10-14 13507 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC65569  Salvia sonomensis R. Banchero 1980-4-27 139 Butte Ca 6.1 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 1.4 mi E of Cohasset Hwy. 609 Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CHSC28872  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte On w end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  SEINET12121443  Sanicula bipinnata S. E. Bigbee 1984-1 35 Butte ca 50 yds S of Butte Creek & ca 320 yds W of Covered Bridge, 6.2 i ESE of Chico 121 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  CHSC3468  Sanicula bipinnatifida Roger Jaegel 1966-3-2 21 Butte Collected four miles north east of Chico in upper Bidwell Park in an area of small drainage on a south slope. Upper Bidwell Park. Comment
  RSA52125  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  CHSC42661  Sanicula graveolens Vernon Oswald 1987-7-13 3107 Butte Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  SEINET10483048  Saxifraga oregana Mary Susan Taylor 1977-7-15 Taylor 1405 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC3285  Scandix pecten-veneris M. L. Hillier 1966-5-7 Butte About 3 miles n.e. of Skyway on Humbug rd. Comment
  JEPS124202  Scandix pecten-veneris Lowell Ahart 2015-4-13 20040 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  JEPS95816  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  CAS-BOT-BC22406  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CAS-BOT-BC22402  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-22 3073 Butte Canyon of Philbrook Creek; seep just above the High Lakes Road 3.r mi west of the pass, Jonesville quad (15') 1905 Comment
  CHSC100929  Scirpus microcarpus R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4296 Butte Northeast of Oroville and Brush Creek, on Oroville-Quincy Highway. 1219 Comment
  CHSC65604  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. 1396 Comment
  JEPS87190  Scirpus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  SD116544  Scirpus tuberosus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Groville and Marysville, stream through Valley Grassland and grainfield. On moist clay. Dry rocky stream bed. 29 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  RSA3813  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek, east of Chico. Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC797  Scutellaria tuberosa M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38405  Sedella pumila Vernon Oswald 1983-4-18 342 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC90600  Sedella pumila John P. McKeon 1980-4-24 12 Butte Ca. 30 m s of jct of Hwy 32 and Humboldt Rd. 20 m e of Hwy 32. 8.3 km e of Chico. 265 Comment
  CHSC109544  Sedum spathulifolium L. P. Janeway 2012-5-29 10830 Butte Northern High Sierra Nevada. Along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south-southwest of Ponderosa Reservoir dam. 482 Comment
  CHSC31078  Sedum spathulifolium Herb Allen McLane 1980-4-25 9 Butte 10 ft s of Ponderosa Way, Plumas National Forest. 487 Comment
  SEINET12215938  Sedum spathulifolium Unknown 1972-1 7 Butte P.G.& E. stop, ca 1/2 mi N of Bear Creek where it flows into the N fork of the Feather River 183 Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  UC306791  Selaginella hansenii R. M. Austin May 1883 20 Butte bluffs along Little Chico Creek Little Chico Creek Comment
  CAS-BOT-BC69729  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte Brush Creek quad. On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork River. 441 Comment
  CAS-BOT-BC363284  Senecio aronicoides F. N. Bassett June 16. s.n. Butte Jonesville Comment
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CHSC49827  Senecio integerrimus var. major Vernon Oswald; Lowell Ahart 1990-4-9 4157 Butte Trail to Fall River near its junction with Feather Falls Trail, near the Overlook. All along the Feather Falls Trail. 621 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC30364  Senecio sylvaticus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 691 Butte Top of North Table Mt, 100 E of waterfalls of the S branch of Coal Cr. 365 Comment
  JEPS121982  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC113120  Sequoiadendron giganteum Lowell Ahart 2013-10-26 19206 Butte On the east side of the Bald Mountain Lookout, Bald Mountain. 2066 Comment
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Jul 25 2018
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  CHSC43289  Setaria gracilis Lowell Ahart 1987-9-24 5899 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
  CAS-BOT-BC243562  Setaria parviflora Lowell Ahart 1977-8-14 1548 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD92594  Setaria parviflora L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CAS-BOT-BC240125  Setaria pumila Lowell Ahart 1987-5-27 5705 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD92723  Setaria pumila G. F. Hrusa; T. D. Wilfred 1996-9-6 13573 Butte on E side of Butte Creek, approx. 1/2 mile NE of confluence with Howard Slough and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10500672  Sherardia arvensis Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4286 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  JEPS115571  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest 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
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  UC1609283  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte 6 air mi ne Feather Falls (w of the bridge across Fall River, large bar along Fall River); ne of Feather Falls, along Fall River 1036 Comment
  CHSC11787  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville. In open pine woods. 1550 Comment
  UC204919  Sidalcea hartwegii A. A. Heller 1914-4-16 11298 Butte 2 mi from Chico; 2 mi from Chico Comment
  SEINET8945015  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon, near Clear Creek. Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  POM84285  Sidalcea hirsuta C. C. Bruce 1897-04 1924 Butte Along Sloughs Butte Comment
  JEPS121909  Sidalcea oregana subsp. spicata Lowell Ahart 2014-7-16 19683 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CAS-BOT-BC387070  Silene gallica Lowell Ahart 1980-5-4 2161 Butte Thermalito 65 Comment
  CHSC91476  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  UC177562  Silene occidentalis subsp. longistipitata H. M. Hall Jul 1914 9773 Butte Jonesville 1524 Comment
  CAS-BOT-BC74930  Sinapis arvensis Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC2415  Sisyrinchium bellum R. Carter 1965-6-20 245 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbstown Rd. on Forbstown Rd. 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  JEPS108778  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  JEPS120606  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  CHSC2519  Solanum parishii W. Fitzwater 1958-4-12 Butte Humboldt Rd., Chico area. 426 Comment
  NY821149  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC76423  Solanum rostratum Lowell Ahart 1999-10-28 8320 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
  CHSC33105  Sonchus asper M. S. Taylor 1981-5-15 3736 Butte Se side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi n of Pulga bridge. 457 Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. Comment
  CHSC35221  Sorbus scopulina M. S. Taylor 1981-5-13 3706 Butte Jct of 23N15.5, 22N66X, and 22N40, ca. 2 air mi s of Four Trees Rd, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Shy. 1280 Comment
  JEPS124191  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte About 100 yards southeast of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  UC481512  Sorbus scopulina var. cascadensis H. F. Copeland 1924-8-10 886 Butte Jonesville Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 Comment
  CAS-BOT-BC389946  Spergula arvensis Lowell Ahart 1988-5-12 5989 Butte About 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  CHSC45560  Spergula arvensis subsp. arvensis Lowell Ahart 1974-3-12 318 Butte In farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1562500  Spergula arvensis subsp. arvensis Barbara Ertter with Lowell Ahart 1986-4-13 5890 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  SEINET10833470  Spergularia marina Mary Susan Taylor 1982-4-28 Taylor 4348 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC149711  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC10717  Spiranthes porrifolia Lowell Ahart 1962-6-10 Butte Ahart Ranch, Honcut. 42 Comment
  CHSC33959  Spiranthes porrifolia M. S. Taylor; L. Ahart 1981-8-16 4204 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
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Sep 6 2011
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  UC884335  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  CHSC99474  Stachys pycnantha Lowell Ahart 2008-7-23 15146 Butte North edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC374774  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  CHSC90631  Stellaria media Lowell Ahart 2005-4-2 11689 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-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
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 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
  JEPS122212  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC375583  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville 1550 Comment
  CHSC61633  Stephanomeria lactucina Lowell Ahart 1993-9-8 7173 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CHSC51359  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald; Lowell Ahart 1990-10-11 4463 Butte Spur road off of Dark Canyon Rd, leading to the opening between railroad tunnels No. 7 and No. 8, about 4 miles south of Jarbo Gap. Road cuts. 335 Comment
  SEINET10506970  Stipa Mary Susan Taylor 1980-4-18 Taylor 2506 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  RSA0038270  Stipa californica E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10508405  Stipa stillmanii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4178 Butte T25N R4E sw 1/4 sw 1/4 sec. 33. Paradise NE quad. Both sides of the Skyway 1.8 mi S of Inskip. Yellow Pine Forest. 4100 ft. 1250 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  CHSC62537  Streptanthus longisiliquus B. Castro; L. P. Janeway, J. Jurewicz 1993-7-6 465 Butte Ca 2.5 mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84 ca 1.1 mi N and E of its jcn with major spur road (Rd 22N84A), on upper slopes of a ridge. On SE-facing road cut. 1005 Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC36691  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  JEPS110447  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-6-9 12647 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CAS-BOT-BC48059  Styrax redivivus M. S. Taylor 1978-7-21 1837 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  SEINET10938829  Symphoricarpos rivularis Mary Susan Taylor 1976-3-9 Taylor 1020 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC109791  Symphyotrichum bracteolatum Lowell Ahart 2012-10-20 18492 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CHSC69667  Symphyotrichum chilense Vernon H. Oswald 1983-6-14 688 Butte Upper Bidwell Park, Chico, beside Yahi Trail E of Brown's Hole. 207 Comment
  CAS-BOT-BC98088  Symphyotrichum spathulatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  JEPS87141  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se Kunkle Reservoir ((along a deep wash below the high water line of Lake Oroville)); Lake Oroville 243 Comment
  UC426980  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  JEPS121906  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-7-16 19690 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC98372  Symphyotrichum subulatum var. parviflorum A. A. Heller 1923-10-13 13828 Butte About the rice fields near Richvale Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CAS-BOT-BC376822  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte S end of Stirling City along both sides of the Skyway 1036 Comment
  CHSC109596  Taraxacum officinale Lowell Ahart 2012-5-14 18047 Butte Along the edges of the paved road, a little west of Table 9, east of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC34237  Taraxacum officinale M. S. Taylor 1981-4-28 3568 F Butte Four Trees Rd near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC428  Taraxacum officinale B. Richardson 1929-4-8 Butte Chico. 57 Comment
  UC175518  Tauschia kelloggii A. A. Heller 1913-6-7 10811 Butte near Stirling; near Stirling 1074 Comment
  CAS-BOT-BC81330  Taxus brevifolia Clarence R. Quick 1952-6-29 52 -94 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CAS-BOT-BC81332  Taxus brevifolia Lowell Ahart 1985-7-9 5115 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin 914 Comment
  CHSC20123  Taxus brevifolia M. S. Taylor 1975-5-2 551 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  CHSC4670  Tellima grandiflora R. Carter 1966-4-28 373 Butte Found in Feather R. Canyon ca. 7 mi. N Jarbo Gap at intersection Hwy. 70 and 23N28; ca 100 yds. up 23N28 on E side of road. 640 Comment
  CHSC48910  Tellima grandiflora Vernon Oswald 1984-4-9 1132 Butte Feather Falls Trail, 2.1 trail mi. from the trail head at the end of Bryant Ravine Rd. 457 Comment
  RSA304699  Tellima grandiflora James R. Shevock 1972-5-19 1787 Butte Feather River Cyn. 625 Comment
  CHSC110032  Thuja Lowell Ahart; Josephine Guardino, Tyron Chang 2012-10-12 18478 Butte Just east of the sign Orient Street and E 1st Street, on the south side of Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC25274  Thymus vulgaris K. R. Stern 1977-6-25 Butte Comment
  SEINET10480704  Thysanocarpus Mary Susan Taylor 1981-5-7 Taylor 3642 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC90251  Thysanocarpus curvipes Eric M. Haney 1989-4-23 19 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  CHSC24155  Thysanocarpus curvipes var. elegans B. Bunge 1976-4-22 18 Butte Ca. 100 yd. s of Skyway, ca. 8 mi. ese of Chico. 259 Comment
  CHSC35008  Thysanocarpus curvipes var. elegans R. E. Preston 1982-2-25 180 Butte Ravine of Chico Creek at former diversion dam, Upper Bidwell Park; ca. 5.5 mi ene of downtown Chico. 91 Comment
  CHSC93487  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CAS-BOT-BC67295  Thysanocarpus radians Lowell Ahart 1973-3-7 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC4139  Thysanocarpus radians R. Carter 1966-4-9 328 Butte Found ca. 6 mi. E of Oroville; 500 yds. NE of small reservoir at intersection of Olive Hwy. and Miners Ranch Rd. 243 Comment
  SD560  Tofieldia glutinosa subsp. occidentalis E. B. Copeland 1929-7-24 349 Butte Jonesville, in cold but sunny swamps. 1550 Comment
  JEPS87487  Torilis arvensis Lowell Ahart 1993-6-16 6969 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC29766  Torilis arvensis subsp. purpurea M. S. Taylor 1980-5-24 2743 Butte Peter Ahart Ranch, along Rocky Honcut Creek, Honcut. 50 Comment
  CHSC52331  Torilis arvensis subsp. purpurea Pauleen Broyles 1987-5-21 1050 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  JEPS113177  Torilis arvensis subsp. purpurea Lowell Ahart 2007-5-29 13948 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  NY17652  Torreya californica A. A. Heller 1914-6-24 11515 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC81379  Torreya californica Clarence R. Quick 1962-6-25 62 -11 Butte Iowa Canyon on Chute Camp road between Highway 50 and South Fork American River 548 Comment
  CHSC42923  Torreyochloa pallida var. pauciflora Lowell Ahart 1987-7-3 5788 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
  CHSC45712  Toxicodendron diversilobum Brian L. Campbell 1983-4-14 10 Butte ca 100 m n of Big Chico Creek and 100 m e of Mud Lake, e of Chico in Bidwell Park. 70 Comment
  CHSC2325  Toxicoscordion fremontii R. Carter 1965-2-13 145 Butte Found 0.6 mi. from Grubbs Rd. on Reservoir Rd. on s side of road. 121 Comment
  CHSC44379  Tragopogon dubius Lowell Ahart 1988-5-30 6030 Butte Along Poe Power House Road, about 1/10 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC49666  Triantha occidentalis subsp. occidentalis Vernon Oswald 1984-7-12 1567 Butte Skyway 1.4 mi s of Inskeep. 1402 Comment
  CHSC22603  Trichostema lanceolatum Robert A. Schlising 1973-10-14 3117 Butte Bidwell Park, Chico, ca 0.25 mi NE of jct Upper Park Road and Manzanita Avenue. Comment
  CHSC46639  Trichostema lanceolatum Lowell Ahart 1989-7-4 6360 Butte Growing near a mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS122140  Trifolium Lowell Ahart 2014-5-2 19429 Butte About one mile northwest of Parking Area on the west side of Cherokee Road, about 8 miles (air) north of Oroville. (west of deep canyon, south of willow tops, extreme distance top of lone oak tree, north of deep drainage, fence, fence sigh, northwest top of Digger Pine). Comment
  SEINET10451872  Trifolium albopurpureum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5389 Butte T2