Search Results — 2000 specimen records retrieved (1604 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC725982  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  UC775194  Acer circinatum Herbert L. Mason 1940-5-22 12310 Butte Humboldt Road about ten mi above Chico; above Chico Comment
  UC426916  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 423 Butte Jonesville Jonesville (on shady side of high ridge) 2100 Comment
  CHSC66428  Acer saccharinum Vernon H. Oswald; Lowell Ahart 1996-6-10 7745 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
  SEINET10971290  Achillea Mary Susan Taylor 1981-5-21 Taylor 3764 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 Comment
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  SEINET10937970  Achillea millefolium var. lanulosa Mary Susan Taylor 1978-7-19 Taylor 1750 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC210639  Achnatherum lemmonii R. A. Schlising 1978-4-23 3229 Butte Magalia; just s of the Magalia Reservoir (just w of S. T. RR and Coutelenc Road) Comment
  CHSC49581  Achnatherum lemmonii Vernon Oswald 1983-7-6 835 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  SEINET10663560  Achnatherum occidentale Lowell Ahart, Vernon H. Oswald 1999-7-26 Ahart 8123 Butte T18N, R12E, southwest 1/4 Section 34. On a ridge about 75 yards west of Grouse Ridge Road (Road 14) and about 1/2 mile southwest of the Lookout, about 5.5 miles northeast of Bowman Lake Road (Road 18), about 4.5 miels (air) south of Bowman Lake. 2134 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  CHSC107591  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite 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
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC3803  Achyrachaena mollis R. L. Adams 1964-4-13 60 Butte Found at roadside of Richardson Springs Road 3/4 mile from junction of Cohassett, on south side of road. Comment
  CHSC100477  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2008-11-14 15454 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC116583  Acmispon americanus var. americanus L. P. Janeway 2015-7-20 11804 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC97929  Acmispon americanus var. americanus D. G. Kelch 2006-8-2 06 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. 40 Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC875  Acmispon brachycarpus A. Koopman 1929-3-28 Butte Hill by Country Club. 60 Comment
  CHSC50668  Acmispon glaber Lowell Ahart 1990-5-21 6474 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  SD48505  Acmispon grandiflorus var. grandiflorus E. K. Balls 1957-5-22 22513 Butte North fork Feather River, above Camp Rogers, on trail to Buck's Lake. 655 Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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Jan 19 2011
  CAS-BOT-BC412868  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CAS-BOT-BC418781  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1524 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the intlet of the large lake. 1935 Comment
  CHSC53694  Actaea rubra Kirsten Tarp 1983-8-6 336 Butte Near Butte Meadows, on Bull Hill Rd 0.2 mi from its jct with Humboldt Rd; near creek. 1325 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
  CAS-BOT-BC69659  Adiantum aleuticum Lowell Ahart 1980-9-10 2635 Butte 3 mi. ne. of Milsap Bar. 1100 Comment
  CAS-BOT-BC65557  Adiantum capillus-veneris M. S. Taylor 1979-10-3 2217 Butte s side of Butte Creek, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd., 243 Comment
  SEINET10529850  Adiantum capillus-veneris Mary Susan Taylor 1980-2-17 Taylor 2364 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC4216  Adiantum jordanii R. Carter 1966-3-13 300 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  POM120400  Adiantum jordanii R. M. Austin 1882-10 49 Butte Unspecified Comment
  CDA415  Aegilops triuncialis L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 of a mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. Comment
  CHSC96220  Aegilops triuncialis R. Fischer 2006-5-30 979 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail ca. 40 ft ne of Pine Trail junction. 396 Comment
  JEPS98560  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UCR248229  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, c 2 mi south of Forest Ranch, c. 12 mi north of Chico Comment
  CHSC52342  Aesculus californica Pauleen Broyles 1987-5-21 1055 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Scattered along banks of Singer and Pine Creeks. Comment
  SD116548  Aesculus californica Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3313 Butte North Honcut Creek on Peter Ahart Ranch. 46 Comment
  CHSC61626  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte On the top of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  JEPS87534  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte on top of ridge about 1/2 mi e Snow Mountain; e of Snow Mountain 2103 Comment
  UC600718  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-7-20 Butte edge of wet meadow [across road] Jonesville Comment
  CHSC32602  Agoseris heterophylla J. D. Jokerst 1980-5-6 645 Butte Top of the slope adjacent to Coutelenc Rd ca. 400 m N of its jct with the Skyway. Magalia serpentine. Comment
  CHSC83884  Agoseris heterophylla var. cryptopleura Lowell Ahart 2003-4-10 10053 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC33793  Agoseris retrorsa M. S. Taylor 1981-4-28 3566 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap on Hwy 70. 929 Comment
  SEINET10839137  Agoseris retrorsa Mary Susan Taylor 1981-5-4 Taylor 3594 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 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
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  RSA0036990  Agrimonia gryposepala Lowell A. Ahart 2013-7-2 18815 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SEINET10968367  Agropyron Mary Susan Taylor 1980-7-6 Taylor 3071 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS98366  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  SEINET4344591 Image available Agrostis pallens Unknown 2009-6-19 15929 Butte T23N, R2E, near center, upper half of section 35. About 30 yards south of the fence and 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  UC1594733  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte small stream about 1/2 mi n Carr Mine (s side of hollow, about 2 (air) mi s of Snow Mountain); Coon Hollow 1737 Comment
  CAS-BOT-BC138774  Agrostis scabra Lowell Ahart 1987-7-8 5815 Butte Along a side road near Walker Plains Road, about 1.5 mile northeast of Coyote Gap, about 6 miles northeast of Pulga. 1341 Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  CHSC49501  Agrostis stolonifera Vernon Oswald 1987-7-16 3126 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CDA31941  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 Butte Mud flat, 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
  CHSC111731  Alisma triviale Lowell Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC31016  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC97373  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC36908  Allium amplectens R. A. Schlising 1980-6-14 3707 Butte N of Lake Oroville and E of Berry Creek (village) at Big Bald Rock. 914 Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  CHSC90049  Allium amplectens Laurie L. Gordon 1991-4-17 10 Butte 3 mi e of Hwy 99, ca. 250 ft s of Hwy 32. 54 Comment
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  SEINET7072746  Allium amplectens A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles northeast of Oroville on Route 10 [Mountain Boulevard]. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 619496mE, 4380367mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC460729  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville 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
  UC600452  Allium campanulatum E. B. Copeland 1930-7-12 Butte Jonesville 1800 Comment
  UC843257  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along Feather River Highway); Feather River Highway 609 Comment
  CDA43368  Allium cepa D. G. Kelch 2012-9-19 12 .357a Butte Oroville, immediately west of sewage treatment plant. 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
  CHSC92935  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  CHSC29721  Allium membranaceum J. D. Jokerst 1980-4-17 586 Butte Top of North Table Mt. Northern tip. 472 Comment
  CHSC29839  Allium membranaceum K. R. Stern 1980-6-17 6659 Butte Nimshew. 716 Comment
  CAS-BOT-BC472970  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte Along Highway #24, 22 miles east of Oroville, in the Arid Transition Life Zone. Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  CHSC36951  Allium peninsulare Richard J. Slama 1981-4-20 7 Butte On s rim of canyon, ca. 7 mi. se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  CAS-BOT-BC132076  Allium peninsulare var. peninsulare Lowell Ahart 1989-5-10 6210 Butte Near a dirt road, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CAS-BOT-BC132114  Allium sanbornii var. sanbornii Mrs. C. C. Bruce 1897-5-1 1900 Butte Little [Chico-creek] Chico Creek Comment
  CHSC34996  Allophyllum divaricatum R. Schlising; R. Banchero 1981-6-16 4085 Butte N of Cohasset. 1097 Comment
  CHSC35100  Allophyllum integrifolium R. A. Schlising 1980-7-16 3911 Butte NE of Butte Meadows and SW of Jonesville, near Cherry Hill Campground. At Butte Creek streamside. Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 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
  CAS-BOT-BC170914  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  CHSC43172  Alopecurus aequalis Robert Banchero 1981-8-6 636 Butte Ca 3 air mi se of Jonesvill. 1853 Comment
  CAS-BOT-BC138036  Alopecurus carolinianus Lowell Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. Found growing in our grain fields. 50 Comment
  CDA28195  Alopecurus carolinianus L. Ahart 2003-3-31 10030 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC113278  Alopecurus carolinianus Lowell Ahart 2014-4-26 19417 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  JEPS103532  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the E side of a canal, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC103737  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  JEPS127214  Alopecurus saccatus Lowell Ahart 2016-5-17 20837 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  CHSC40899  Amaranthus albus Lowell Ahart 1985-11-7 5228 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  CHSC94649  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  CHSC36553  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Graylodge Wildlife Refuge Area, ca. 12 mi sw of Gridley. Near a small building in the parking area at the checking station. 35 Comment
  CHSC66894  Amaranthus deflexus Vernon H. Oswald 1996-10-12 8299 Butte Chico, Sewer Ponds on Chico River Rd., ca. 4.5 mi W of Chico. 41 Comment
  HSC97057  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  JEPS106013  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 Comment
  UCD97759  Amaranthus retroflexus A. A. Heller 1915-8-20 12199 Butte 8 miles north of Oroville. Comment
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC47966  Amaranthus rudis Vernon Oswald 1983-10-10 1060 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  CHSC26661  Ambrosia psilostachya M. S. Taylor; H. Hayes 1977-8-19 1505 Butte In Campbell Slough, ca. 3 mi E of jct of Hwys 42 and 162, on N side of Hwy 162. 30 Comment
  CHSC28935  Ammannia coccinea M. S. Taylor 1978-7-22 1851 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in rice field. Comment
  RSA718090  Ammannia robusta L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC80576  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  CHSC61713  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 23 m w of Humboldt Rd. and 4 km e of Chico, .8 km n of Little Chico Creek. 99 Comment
  UC1530703  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) 100 Comment
  CHSC3615  Amsinckia intermedia R. Jaegel 1966-3-2 37 Butte 4 miles Northeast of Chico. On a south slope of a small drainage in Upper Bidwell Park. Comment
  CHSC37415  Amsinckia intermedia R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4005 Butte NW of Oroville and n of Thermalito Forebay in the Campbell Hills. 106 Comment
  JEPS107370  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS115309  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  JEPS119535  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  JEPS115329  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS127066  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge 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. Comment
  CHSC37120  Angelica breweri L. Ahart 1982-9-13 3804 Butte Along edge of a dirt rd a little n of Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42563  Angelica breweri Vernon Oswald 1983-8-17 991 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2023 Comment
  CHSC30774  Angelica californica M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w from the Hwy down a dirt rd. 975 Comment
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  CHSC14026  Anthriscus caucalis J. A Brattan 1974-4-15 5 Butte Abundant at the base of a cliff 300 yds s of the 9th hole on the Bidwell Municipal Golf Course. 91 Comment
  CHSC48969  Antirrhinum cornutum Vernon Oswald 1986-7-22 2216 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. 1097 Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  CHSC44219  Aphyllon purpureum V. Oswald; L. Ahart 1988-7-13 3575 Butte Road to High Lakes e of Philbrook Reservoir. On a steep outcropping on the n side of the road. 1859 Comment
  CAS-BOT-BC392112  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  UC455227  Aquilegia formosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  CHSC52458  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 225 Butte E. of Powellton. 1402 Comment
  POM366932  Aquilegia formosa var. truncata L. Ahart, P. Ahart 1984-6-10 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC80516  Arabidopsis thaliana Lowell Ahart 2001-3-22 8719 Butte On the east side of a small swale and very near the north fence, about 100 yards east of the Olive Orchard and Palermo Honcut Highway, Peter Ahart Ranch, about 11 miles south of Oroville. 32 Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  CAS-BOT-BC407718  Arceuthobium abietinum Vernon Oswald; Lowell Ahart 1987-7-1 3070 Butte Logging road ca. 2.5 air mi. S of Humbug Summit and 0.25 mi. W of the Butte-Plumas county line, ca. 5.25 miles SE of Jonesville 1999 Comment
  POM180839  Arceuthobium abietinum Unspecified 1928-8-14 759 Butte Neighborhood of Jonesville. Near Butte Creek, above Jonesville. 1524 Comment
  UCD52250  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51567 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  JEPS119509  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  RSA755635  Arctostaphylos manzanita subsp. manzanita L. Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte North side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  CAS-BOT-BC24299  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC726979  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte Pentz-Magalia Rd 4 mi below Paradise Comment
  CAS-BOT-BC38558  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51565 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38604  Arctostaphylos mewukka subsp. truei A. A. Heller; H. E. Brown 1902-5-8 s.n. Butte Berry Canyon, near Clear Creek Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. Comment
  RSA31744  Arctostaphylos patula A. A. Heller 1941-2-12 15875 Butte Along the Neal Road, a 1/2 mile West of Optimo Lodge. Comment
  UCD51945  Arctostaphylos truei John Thomas Howell 1975-6-15 51091 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC47383  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51099 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48284  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown 457 Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  CHSC88610  Arctostaphylos viscida subsp. viscida Linnea Hanson 1984-3-29 232 Butte Plumas National Forest. On dirt road north of Hwy. 70, at Jarbo Gap. 975 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  UC535028  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte about 12 mi from Chico; Humboldt Grade Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CAS-BOT-BC137552  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico. Comment
  SEINET10935028  Aristida oligantha Lowell Ahart 1983-8-16 Ahart 4278 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CHSC108862  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte Climbing on a fence, along the short trail to Ten Miles House Road, about 50 feet from Highway 32, about 9 miles northeast of Chico. 469 Comment
  CAS-BOT-BC295838  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte About Chico Meadows 1219 Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  JEPS108150  Asarum lemmonii L. P. Janeway, David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump 1134 Comment
  SEINET10839049  Asarum lemmonii Mary Susan Taylor 1981-5-7 Taylor 3648 Butte 3600 ft. T20N R7E sw sec 11, Clipper Mills quad. In shade of shrub, in creek crossing Lumpkin Ridge Rd(20N15), 1.9 mi W of Golden Trout Crossing on South Fork Feather River, ca. 5 air mi e of Feather Falls. Yellow Pine Forest; 1097 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC108319  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 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
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  RSA0115080  Asclepias speciosa Lowell A. Ahart 2013-6-11 18799 Butte About 10 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 738 Comment
  SEINET10529842  Aspidotis californica Mary Susan Taylor 1981-5-4 Taylor 3604 Butte Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  CAS-BOT-BC65914  Aspidotis densa John Thomas Howell 1962-6-16 37543 Butte Magalia 731 Comment
  CHSC11795  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville. 1700 Comment
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 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
  SEINET10474435  Aster oregonensis subsp. californicus Mary Susan Taylor 1979-9-28 Taylor 2196 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC65620  Aster radulinus L. P. Janeway 1995-9-10 4922 Butte Watson Ridge about 1 mi east of its western end. Overlooking Fall River. 1097 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 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
  CHSC40605  Astragalus gambelianus Ahart; Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC65199  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 mies north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  CAS-BOT-BC27797  Astragalus pauperculus C. C. (Mrs.) Bruce 1898-3-1 2430 Butte Plains Comment
  CHSC12922  Astragalus pauperculus J. A. Roberts 1973-4-4 3 Butte Ca. 200 yds n of Upper Bidwell Park Road, and 0.25 mi e of East Ave., Chico. 60 Comment
  CHSC34150  Athyrium filix-femina var. cyclosorum L. Ahart 1981-9-15 3153 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC27732  Atriplex argentea var. mohavensis Robert A. Schlising 1978-10-27 3346 Butte Chico; disturbed field of California State University campus, near S. P. T. Co. RR and West Sacramento Avenue. Comment
  SEINET3930601  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, south of Parking Area 5 Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh.; 0 30 Comment
  SEINET10479106  Atriplex heterosperma Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5152 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC4394  Avena barbata R. L. Smith 1966-5-15 Butte Paradise, 5 mi sw of Post Office. 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
  JEPS110442  Avena fatua Lowell Ahart 2005-12-11 12515 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
  CHSC116021  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS124325  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC95989  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC45640  Baccharis pilularis subsp. pilularis Vernon H. Oswald 1982-11-20 17 Butte Sewage Treatment Plant on Chico River Rd. ca 4.5 mi W of Chico. 41 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CDA41018  Bacopa repens Bellue 1949-8-23 s.n. Butte Afton Road near Biggs. Note: (160 Acre rice infested 6-7 miles northeast of Willows) 0 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  UC600710  Barbarea orthoceras H. F. Copeland 1931-6-9 Butte Jonesville by Jones Creek 1524 Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC108968  Bellis perennis Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico creek, Bidwell Park, city of Chico. 60 Comment
  JEPS118614  Bellis perennis L. P. Janeway 2011-6-2 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. Chico 7.5; quad. Comment
  CHSC7073  Berberis aquifolium var. dictyota R. B. Watkins 1969-3-31 12 Butte .6 mi e of Jarbo gap, 2yds. S on Forest Service Rd. #23N12. 670 Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC83278  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 27 Comment
  JEPS120603  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS119678  Blennosperma nanum var. nanum Lowell Ahart 2012-5-4 17988 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC113241  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte Near the top of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC32680  Boechera sparsiflora M. S. Taylor 1981-3-24 3437 Butte S side of Hwy 70, on ledges, ca. 1/4 mi w of Cresta Powerhouse, ca. 2 mi e of Pulga. 487 Comment
  JEPS120568  Bothriochloa laguroides subsp. torreyana L. P. Janeway 2012-6-13 10872 Butte Northern High Sierra Nevada Foothills. East side of Thermalito Diversion Pool (Feather River) just south of the railroad bridge over the Pool, 0.6 km north of Thermalito Diversion Dam, between the Pool and the railroad tracks. Comment
  UC777275  Botrychium simplex W. H. Wagner Jr. 1949-7-16 4610 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  SEINET5541525  Brassica campestris H. S. Gentry, S. Koch 1962-1 19785 Butte Near Richvale. 53 Comment
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC110130  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Humboldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  CHSC30906  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  RSA0060844  Brickellia californica Lowell A. Ahart 2012-10-20 18496 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC116975  Briza maxima Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Sspillway. 118 Comment
  CAS-BOT-BC145533  Briza minor A. A. Heller 1914-4-14 11289 Butte Hills 8 miles north of Oroville. Comment
  CHSC41138  Briza minor R. L. Ondricek-Fallscheer 1982-5-25 134 Butte On ne side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC99642  Briza minor H. Koeth; H. Jansen 2007-4-25 Butte Hwy 32 (Roadside), West from Bidwell Park. UTM 10 608429E 4402420N. 342 Comment
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. Comment
  SEINET12048535  Brodiaea californica Unknown 1984-1 13 Butte ca 9 m NE Chico & 100 yds in Big Chico Creek 183 Comment
  POM215689  Brodiaea californica var. californica David D. Keck 1933-5-30 2410 Butte 1 mile W of Richardson Springs. Comment
  CHSC117352  Brodiaea coronaria B. Castro; Sabrina Bell 2015-5-21 2044 Butte Sacramento Valley. Ca 1.6 air mi E of hwy 99 off eastern edge of Thermolito Afterbay, 1.16 mi Sof Hwy 162, along SW extension of Wilbur Rd (the Afterbay perimeter road). A few yards S of road. 43 Comment
  SEINET10932596  Brodiaea coronaria A. Arthur Heller 1914-7-24 Heller 11619 Butte Butte Meadows, 4000 feet. Comment
  SEINET194963  Brodiaea coronaria subsp. coronaria A. A. Heller 1938-5-22 15105 Butte On the roadside near the Chico airport Comment
  CHSC21147  Brodiaea elegans M. S. Taylor 1975-6-30 819 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Green wood Store, Cohasset. 853 Comment
  CHSC29657  Brodiaea elegans J. D. Jokerst 1980-5-28 798 Butte Top of North Table Mt, S of Cherokee Rd. 403 Comment
  CAS-BOT-BC482926  Brodiaea elegans subsp. elegans A. A. Heller 1913-6-4 10770 Butte Table Mountain Olive Ranch north of Oroville 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
  UC1133981  Brodiaea nana F. W. Embree 1934-4-26 45 Butte 2 1/2 mi ne Honcut; Marysville Quad. Comment
  UCD77195  Brodiaea nana Robert E. Preston 2004-4-21 2217 Butte Ca. 4.3 mi NW of Oroville. 56 Comment
  CAS-BOT-BC486479  Brodiaea sierrae John Thomas Howell 1962-6-15 37527 Butte Magalia 731 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  CHSC87953  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
  CHSC31945  Bromus diandrus J. D. Jokerst 1979-4-20 1212 Butte E edge of the top of North Table Mt., ca. 0.75 mi N of Cherokee Rd. 396 Comment
  CHSC42848  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA725192  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade range Foothills. East edge of city of Chico; northwest side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CHSC109548  Bromus laevipes L. P. Janeway 2012-6-7 10871 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
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  JEPS115989  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  CHSC28543  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On w side of Hwy 32 on edge of forest., ca. 1/4 mi n of Forest Ranch. 718 Comment
  UCD59531  Bromus rubens A. A. Heller 1914-4-11 11279 Butte 8 miles N of Oroville. Comment
  SEINET10868251  Bromus rubens Leverton 1974-4-10 LEVERTON s.n. Butte Abundant along East Avenue, ca. .5 mile E of Mangrove Avenue, Chico. Associates: Bromus inermis, Lolium multiflorum. Comment
  CAS-BOT-BC161618  Bromus sterilis Lowell Ahart 1980-5-17 2292 Butte 0.5 mile southeast of Hurleton. 600 Comment
  UC1609516  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  JEPS87443  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  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
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CHSC3559  Calandrinia ciliata R. D. Briggs 1966-3-6 68 Butte Road side, 1/4 mile due west of golf course club house in Bidwell Park, Chico. 91 Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  SEINET10939584  Callitriche heterophylla subsp. bolanderi Mary Susan Taylor 1984-4-6 Taylor 5403 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC30891  Callitriche heterophylla var. bolanderi J. D. Jokerst 1979-3-20 1150 Butte Top of North Table Mt., ca 0.5 mi N of the jct. of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC97379  Callitriche heterophylla var. bolanderi Paul Maslin 2006-5-3 37 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609374E 4410375N. 342 Comment
  CHSC48003  Callitriche marginata Vernon Oswald 1987-4-7 2313 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch, e of Hwy 99. In ruts of a dirt track. 68 Comment
  HSC32613  Callitriche trochlearis R. A. Vanbianchi 1974-4-20 229 Butte Table Mtn. 305 Comment
  CHSC2223  Calochortus albus N. Maxwell 1929-4-24 Butte Centerville Road. 152 Comment
  CHSC2510  Calochortus albus W. Fitzwater 1958-4-19 Butte Neal Grade, Chico area. Comment
  CHSC57546  Calochortus albus Robert C. Hill 1990-4-12 15 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  HSC38065  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2473 Butte Beside SR 191 about 4 mi. W of Paradise Comment
  RSA424692  Calochortus albus J. Liston, M. A. Blumler 1987-4-24 659 -1 Butte Table Mountain, N of Oroville on Cherokee Rd. Below the top of Table Mountain. Comment
  SEINET12044755  Calochortus albus L. S. Rose 1931-1 s.n. Butte Coast Ranges and Sierra Nevada foothills Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  CAS-BOT-BC491846  Calochortus luteus Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CAS-BOT-BC492564  Calochortus minimus E. K. Balls; L. W. Lenz 1955-5-13 20698 Butte 7 mi. ne. from Pentz Trading Sta. on rd. to U.S. Hwy. 40 alt. from Oroville-Magalia road 579 Comment
  CHSC44980  Calochortus monophyllus R. E. Alumbaugh 1984-4-26 15 Butte Scattered 1.2 mi n of Butte creek and 5 ft e of Centerville rd, across from Centerville cemetary, 0.9 mi n of Centerville. 350 Comment
  CHSC44982  Calochortus monophyllus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14 km ne of Chico municipal airport. 500 Comment
  RSA369086  Calochortus monophyllus J. Doty 1969-3-31 614 Butte Summit of mesa, east side of Cohasset Road, 8 miles north of Chico Comment
  RSA369111  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CAS-BOT-BC493345  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, 335 Comment
  POM109542  Calochortus tolmiei C. C. Bruce 1898-05 2407 Butte [No locality information provided] Comment
  POM253057  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Shallow ravine along the Feather River Highway near the Yankee Hill road about 20 miles from Oroville Comment
  CHSC53698  Caltha leptosepala var. biflora Kirsten Tarp 1982-7-16 208 Butte In Kimshew Creek, Crane Valley. 1591 Comment
  CAS-BOT-BC270002  Calycadenia multiglandulosa Lowell Ahart 1980-6-19 2390 Butte Along Swedes Flat Road, near Bangor 320 Comment
  JEPS94774  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte 1 1/2 air mi s of Hurleton (along Hurleton Swedes Flat Road about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  CHSC86848  Calycadenia oppositifolia L. P. Janeway; Christine Hantelman 2003-7-10 7894 Butte Northern Sierra Nevada Foothills. Above western edge of Rich Gulch arm of West Branch Feather River arm of Lake Oroville; 895 m east of north end of West Branch Bridge (Hwy 70). 294 Comment
  JEPS107984  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  JEPS20220  Calycadenia oppositifolia R. F. Hoover 1938-4-24 3237 Butte 3 mi n Chico Comment
  JEPS33811  Calycadenia oppositifolia C. C. Parry 1882-1-1 Butte Chico Comment
  CHSC94936  Calycanthus occidentalis K. Lang 2005-5-5 11 Butte Lime Saddle Boat Launch, near Oroville. 279 Comment
  POM68555  Calycanthus occidentalis C. C. Bruce 1897-06 1822 `` Butte Big Chico Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  POM97739  Calycanthus occidentalis Mrs. R. M. Austin 1883-05 12 Butte Butte Creek. Comment
  CDA13318  Calyptridium monospermum G. F. Hrusa, T. D. Wilfred 1996-7-9 13164 Butte Sierra Nevada; USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  JEPS117419  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west 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
  CAS-BOT-BC223609  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19869 Butte Forest Ranch, 22 km NE of Chico on Rte. 32, at Schott Road junction 800 Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  UC1794960  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; besides Skyway 650 Comment
  CHSC37089  Calystegia malacophylla L. Ahart 1982-9-29 3832 Butte At N end of Lost Creek Reservoir Dam, ca. 2 mi NW of Strawberry Valley. 1100 Comment
  RSA718168  Calystegia malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CHSC27311  Calystegia occidentalis subsp. occidentalis t. B. Devine 1976-7-31 344 Butte Beside Humbug Road ca 2 mi S of Nimshaw. 548 Comment
  RSA21311  Calystegia occidentalis subsp. occidentalis C. B. Wolf 1937-5-13 8656 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  UC1609310  Campanula prenanthoides Lowell Ahart 1993-9-13 7235 Butte on sides of dry wash near Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  UC1609329  Campanula scouleri Lowell Ahart 1993-7-22 7078 Butte in campground on w side bridge across Fall River (about 6 air mi ne of Feather Falls) 1036 Comment
  CHSC103664  Capsella bursa-pastoris Lowell Ahart 2010-3-5 16570 Butte Parking area, 20 feet south of Sycamore Street (Gridley Colusa Highway), 3 feet east of Virginia Street, in Gridley. 28 Comment
  HSC96910  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 air mi. SW of Chico 26 Comment
  CAS-BOT-BC37063  Capsella bursa-pastoris Lowell Ahart 1980-2-23 2025 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  CHSC19931  Cardamine oligosperma M. S. Taylor 1975-3-3 400 Butte Ca. 1/4 mi n of Richardson Springs camp, in dam area, ca. 8 mi n of Chico. 91 Comment
  CHSC32682  Cardamine oligosperma M. S. Taylor 1981-3-24 3444 Butte S side of Hwy 70, just w of Heinz Creek, ca. 1 mi w of Pulga. 487 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 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
  CHSC27943  Cardamine pachystigma var. dissectifolia M. S. Taylor 1979-3-20 1946 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CDA6886  Carduus pycnocephalus T. C. Fuller 1959-7-6 2744 Butte Feather River drainage - 5 miles south of Oroville. 0 Comment
  JEPS122028  Carex Lowell Ahart 2014-7-2 19537 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC18211  Carex Lowell Ahart 1989-5-28 6283 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1.5 mile west of Rocky Point. 335 Comment
  CHSC55426  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1852 Butte Along Humbug Summit Road at Cold Springs, just below Humbug Summit. 1965 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC113957  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC53753  Carex angustata L. P. Janeway 1986-9-1 1832 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  JEPS121958  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  RSA4412  Carex athrostachya E. B. Copeland 1929-7-28 607 Butte Jonesville. 1500 Comment
  SD130961  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Sierra Nevada; southeast of Snag Lake (about 3 miles south of Jonesville); 1 mile east of Coon Hollow Road. 1500 Comment
  SD473  Carex aurea E. B. Copeland 1930-6-23 Butte Jonesville; in wet meadows. 1500 Comment
  CAS-BOT-BC19200  Carex barbarae Lowell Ahart 1980-5-12 2257 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC19201  Carex barbarae Lowell Ahart 1977-5-20 s.n. Butte Sierra Nevada. Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 Comment
  CHSC100766  Carex bolanderi L. P. Janeway; B. Castro 2008-4-23 9354 Butte Northern Sierra Nevada Foothills. Along the northwest edge of Thermalito Diversion Pool (the former bed of the Feather River, now kept at a constant pool elevation of 69 m), 1.8 km north of Thermalito Diversion Dam; about 3 km north-northeast of Oroville. 69 Comment
  CHSC102594  Carex bolanderi L. P. Janeway; B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River). 823 Comment
  SEINET6417024 Image available Carex bolanderi L. Janeway, Gog, L 2008-1 3199 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  CHSC111018  Carex cyrtostachya L. P. Janeway; Lowell Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. Small seepage/drainage (now dry) on the west edge of a low broad granite slab, 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC115853  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0,8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands. 1055 Comment
  CHSC50351  Carex cyrtostachya Vernon Oswald 1990-5-14 4208 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC71402  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte On the north side of the dirt road, about 1/2 mile northwest of the Lost Creek Reservoir, about 3/4 mile northwest of the Lost Creek Dam. 1021 Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CHSC102837  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
  CHSC111380  Carex divulsa subsp. divulsa Lowell Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 63 Comment
  HSC103999  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Chico, one block S of Chico High School, NW of the intersection of W. Frances Willard Ave. and Arcadian Ave. 59 Comment
  CHSC84750  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  CHSC76349  Carex heteroneura var. heteroneura L. P. Janeway 1999-7-17 6508 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CHSC47058  Carex hirtissima L. P. Janeway 1989-5-17 3241 Butte Drying wet area along Forbestown Rd 9.2 mi E of Oroville-Quincy Hwy, and 0.1 mi W of Lower Forbestown Rd. 798 Comment
  CHSC6658  Carex hirtissima Marilyn Lee 1968-4-19 116 Butte West side of Cherokee Road, 2 miles south-east of cemetary. Table Mt. Comment
  CHSC36894  Carex hirtissima L. Ahart 1982-6-1 3529 Butte A little south of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC52267  Carex infirminervia L. P. Janeway 1986-9-1 1828 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC84752  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
  CAS-BOT-BC31119  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CHSC45055  Carex lemmonii Vernon Oswald 1983-7-6 825 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 Comment
  SEINET7485354 Image available Carex lemmonii Peter F. Zika 2009-1 24519 Butte below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road, Cascade Range 1210 Comment
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  JEPS120096  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, 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
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  JEPS120939  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC43869  Carex nebrascensis Vernon Oswald 1983-6-22 751 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CAS-BOT-BC119722  Carex nervina L. P. Janeway; Robert A. Schlising 1988-7-1 2930 Butte Jonesville quad. Meadow between two lakes at SE-most headwaters of Butte Creek. 1935 Comment
  CAS-BOT-BC119559  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CAS-BOT-BC119566  Carex nudata Lowell Ahart 1980-5-12 2250 Butte Peter Ahart Ranch, Honcut. 50 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
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC95300  Carex nudata Lowell Ahart 2006-10-15 13509 Butte 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
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  CHSC44695  Carex pellita L. P. Janeway 1988-7-29 3112 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  CAS-BOT-BC118353  Carex praegracilis Lowell Ahart 1977-6-3 1437 Butte Peter Ahart Ranch, Honcut. Along the edge of a small wash. 50 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  CHSC44993  Carex simulata S. C. Morey 1983-8-4 701 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC76849  Carex stipata var. stipata L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio 1997-6-13 5140 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  CHSC52871  Carex straminiformis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3138 Butte Ridge SE from Snow Mtn. Along N-facing ridgetop. 2103 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  SEINET7577169 Image available Carex subfusca Ray Tallent 1987-8-18 955 Butte Lassen National Forest. River bank just above bridge near West Branch (of the Feather River) campground. 1620 Comment
  SEINET7577201 Image available Carex subfusca Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11401 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. 1535 Comment
  UCSB64037  Carex texensis Janeway, L. 1997-4-20 Butte T22N, R1E, SW1/4 of NW1/4 of sec. 36; within the City of Chico; south side of town; in backyard lawn at 129 W 19th Street 60 Comment
  CAS-BOT-BC19606  Carex xerophila B. Castro; Gail Kuenster 1989-5-29 307 Butte Ca. 0.1 mile north of junction Coutolenc Road and Skyway. On flat ledge between Coutolenc Road and old SPRR bed. 707 Comment
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 Comment
  CHSC838  Cassia covesii 1932-6-26 Butte Comment
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Apr 2 2012
  UCR190826  Castilleja Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CAS-BOT-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
  CHSC33126  Castilleja affinis J. D. Jokerst; R. A. Schlising 1981-4-16 1298 Butte S side of Olive Highway 0.3 mi SW of it's junction with Forbestown Road. Comment
  CHSC115360  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte Steep east road cut, along Oregon Gluch Road, about one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  JEPS57366  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1925 Butte about 4 air mi nw Bangor (along Oroville-Bangor road) 182 Comment
  CDA13307  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13153 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS N60. Comment
  CHSC114981  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC1811  Castilleja attenuata P. Delaplane 1965-4-6 5 Butte Along W. side of Cohasset Rd. ca 1/4 mi. S.W. of intersection of Cohasset Rd. and Keefer Rd., Chico. 152 Comment
  UCD122339  Castilleja attenuata Michael A. Vincent; Ethan H. Freid 1998-4-6 8128 Butte Table Mountain. 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
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  HSC23341  Castilleja exserta subsp. exserta L. Walk 1971-4-6 11 Butte .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99 30 Comment
  CHSC61181  Castilleja lacera V. H. Oswald; L. Hanson, L. P. Janeway 1993-5-11 5371 Butte McKnight Ranch on the N side of Hwy. 99 between Neal and Durham-Pentz roads, on the bottom of the first canyon (unnamed) S of the Butte County Sanitary Landfill, near the double set of power transmission lines. 91 Comment
  CAS-BOT-BC241123  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte Upper end of Snag Lake, 7 miles east of Chaparral 1524 Comment
  CHSC11901  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  UC725777  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  CHSC31643  Caulanthus lasiophyllus L. Ahart 1974-4-14 415 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC48809  Ceanothus cuneatus Lowell Ahart 1980-3-26 2061 Butte Near Hurleton 600 Comment
  CAS-BOT-BC49179  Ceanothus cuneatus Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  RSA755641  Ceanothus integerrimus L. Ahart 2009-5-15 15693 A Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  CHSC2507  Ceanothus integerrimus var. macrothyrsus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CHSC42001  Ceanothus lemmonii Lowell Ahart 1973-4-15 202 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  UC2026879  Celtis australis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  CDA7260  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 miles east of Oroville. Comment
  CHSC44892  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  UC1562423  Centaurium muehlenbergii Lowell Ahart 1990-6-16 6511 Butte on the e side Forbestown Reservoir (at the Forbestown Generator, on the e side of the dirt road) 487 Comment
  CHSC50673  Centaurium tenuiflorum Lowell Ahart 1990-6-16 6511 Butte Along a small streamlet at the Forbestown Generator, on the east side of the dirt road, on the east side of the Forbestown Reservoir. 487 Comment
  CAS-BOT-BC271505  Centromadia parryi subsp. rudis Lowell Ahart 1983-9-19 1121 Butte 1/8 mile south of the Gray Lodge Waterfowl Management Area, 12 miles southwest of Gridley, Sutter Buttes Area 35 Comment
  CDA38238  Cephalanthus occidentalis G. F. Hrusa, S. Dubiel 2012-9-9 18508 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 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
  CHSC46350  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS117507  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  UC15107  Cercis occidentalis unknown 380 Butte Chico Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CHSC35668  Chaenactis glabriuscula var. heterocarpha R. E. Preston 1982-4-22 259 Butte 100 ft n of Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 289 Comment
  CHSC50100  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-24 4171 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 286 Comment
  CHSC46071  Chaenactis glabriuscula var. megacephala J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1782 Butte Top of Bald Rock Dome. Comment
  CDA29968  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC44389  Chamaesyce maculata Lowell Ahart 1988-7-3 6120 Butte Along the edge of the dirt road, about 1/10 mile north of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CHSC47427  Chamaesyce maculata Lowell Ahart 1984-8-19 4786 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  SEINET263347  Chamaesyce nutans V. H. Oswald, L Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162 ca. 3.5 mi NNW of Biggs 30 Comment
  CDA34638  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-3 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  SEINET10529951  Cheilanthes californica Mary Susan Taylor 1981-5-15 Taylor 3732 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  SEINET10529958  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2706 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  CAS-BOT-BC69447  Cheilanthes gracillima Mrs. H. C. Cantelow 1941-5-18 s.n. Butte 1.5 mi. w. of Jonesville, on road to Gibsonville. 1615 Comment
  SEINET10529939  Cheilanthes siliquosa Mary Susan Taylor 1979-10-13 Taylor 2263 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
  CHSC43256  Chenopodium album Lowell Ahart 1987-10-22 5923 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile northwest of Highway 70. 76 Comment
  CHSC42961  Chenopodium berlandieri Lowell Ahart 1987-7-3 5761 Butte On the 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
  CDA13235  Chenopodium botrys G. F. Hrusa, T. D. Wilfred 1996-7-8 13082 Butte Plumas National Forest; Old gun range on Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC117324  Chenopodium pratericola B. Castro; Melinda Carlson 2007-10-25 1682 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek adjacent to surrounding riparian forest. Arroyo Chico land grant area. 36 Comment
  CHSC100499  Chenopodium strictum var. glaucophyllum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15411 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
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  UC217459  Chlorogalum angustifolium H. M. Hall 1917-5-13 103 d2 Butte w Pentz Comment
  CAS-BOT-BC252673  Chorizanthe membranacea David D. Keck 1933-5-30 2406 Butte 3.0 miles southwest of Richardson Springs Comment
  SEINET11933836  Chorizanthe membranacea Unknown 1984-1 4678 Butte Along the dirt road near the water tower, above the generator, ca 1 mi E of Ponderosa Dam, ca 2 mi 475 Comment
  CAS-BOT-BC252834  Chorizanthe polygonoides var. polygonoides A. A. Heller 1939-4-26 15382 Butte Along the Neal Road just above the Spring House west of Paradise 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
  UC101516  Chorizanthe stellulata Mrs. R. M. Austin 1883-1 Butte Comment
  UCD72994  Cicendia quadrangularis Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET10454839  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2441 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC102813  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  UC177595  Cirsium douglasii var. breweri H. M. Hall 1914-7-30 9816 Butte n Butte County Sierra Nevada Mountains 1524 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
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SEINET12194210  Clarkia biloba subsp. brandegeeae Unknown 1984-1 4658 Butte Along Ponderosa Way, ca 1/8 mi W of Ponderosa Dam, ca 2 mi NW of Forbestown; 370 Comment
  CHSC62767  Clarkia concinna subsp. concinna L. P. Janeway 1993-6-16 4390 Butte Plumas National Forest. Upper east-facing slopes of North Fork Feather River canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap. Road cut-bank. 670 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  LA206022  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. R. Roberts 1951-5-19 827 Butte road from Nimshew to Butte Creek Canyon, 1.65 mi. below Nimshew Comment
  POM39336  Clarkia gracilis subsp. albicaulis C. C. Bruce 1898-05 s.n. Butte Little Chico Comment
  RSA718034  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  UCR148890  Clarkia mildrediae G. Fred Hrusa, T. D. Wilfred 1996-7-9 13169 Butte Sierra Nevada - Plumas National Forest, c. 1 m. on 22N89; immediately south of Rogers Cow Camp on Hwy 162 335 Comment
  HSC95510  Clarkia mildrediae L. Ahart 1997-7-11 7743 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  CHSC86578  Clarkia mosquinii L. P. Janeway; John Hunt 2003-7-1 7861 Butte Northern High Sierra Nevada. Along southeast edge of Middle Fork Feather River arm of Lake Oroville, 960 m west-southwest of mouth of Frey Creek. Just above high water line. 276 Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CAS-BOT-BC164776  Clarkia rhomboidea Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CHSC81385  Clarkia rhomboidea Samantha Hillaire 2001-5-16 302 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 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
  RSA108409  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 759 Butte Highway 24, 1.4 mile south of Arch Rock, Feather River. Comment
  SD7341  Clarkia rhomboidea Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC164788  Clarkia rhomboidea A. A. Heller 1928-5-27 14562 Butte At the sawmill on the Neal Road, Paradise Comment
  SBBG4998  Clarkia rhomboidea H. and M. Dearing 1938-6-21 2052 Butte 21 mi NE of Chico Comment
  JEPS117242  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 180 Comment
  POM38549  Clarkia unguiculata C. C. Bruce 1897-06 1854 Butte Little Chico. Comment
  SEINET10572706  Claytonia parviflora Mary Susan Taylor 1981-5-15 Taylor 3745 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  SEINET11935018  Claytonia perfoliata Unknown 1988-1 61 Butte E side of Cohasset Rd., ca 4 mi NE of Chico municipal airport, Chico 107 Comment
  CHSC4622  Claytonia perfoliata subsp. perfoliata R. Carter 1966-3-22 304 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W of Feathervale at 6120 woodleaf St. Rt., 10 yds W of house under Quercus wislizenii. 243 Comment
  CHSC56762  Claytonia rubra J. Monelo 1990-4-16 10 Butte Butte Meadows - Humboldt Rd ca 1.9 mi n of Hwy 32 facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  CHSC23675  Claytonia rubra subsp. rubra M. S. Taylor 1976-4-24 1070 Butte Abundant 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
  SEINET5337772  Clematis lasiantha R. T. Short 1959-4-11 s.n. Butte 15 miles east of Oroville on US 40. 549 Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC11087  Collinsia tinctoria Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  JEPS6368  Collinsia tinctoria Rimo Bacigalupi & Richard Hauke 1954-7-15 4700 Butte 0.5 mi s and below Nimshew (along flank of Butte Canyon, on the Humbug (Nimshew) rd); Butte Canyon 701 Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  SBBG29150  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 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
  JEPS108549  Collomia heterophylla L. P. Janeway 1994-5-26 4654 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank 1226 Comment
  UC129469  Collomia heterophylla Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC50414  Collomia linearis Vernon Oswald 1990-6-26 4319 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the upper north bank of the creek just upstream from Humbug Rd. 1761 Comment
  CAS-BOT-BC180254  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  CHSC27201  Cornus florida P. Moyer 1971-9-26 11 Butte CSUC Campus. S entrance to Gus Magnolis on bank of Chico Ck. 60 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
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CHSC5959  Cotoneaster horizontalis M. MacArthur 1968-6-17 197 Butte SW end Life Science bld., ca. 10 ft. from bld., Chico State College Campus. 60 Comment
  CDA34627  Cotoneaster lacteus L. Ahart 2009-5-3 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  UC1562410  Cotula australis Lowell Ahart 1990-5-28 6498 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  CAS-BOT-BC291334  Cotula coronopifolia Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo 35 Comment
  JEPS117153  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley 28 Comment
  JEPS98453  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  SD116540  Crassula solieri Barbara Ertter, Jeff Strachan, et al. 1980-5-7 3302 Butte North Table Mountain 5.0 miles north of Oroville. 395 Comment
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  CAS-BOT-BC290324  Crepis L. W. Swift 1934-5-8 105 Butte Plumas National Forest. S Challenge 914 Comment
  CHSC43960  Cressa truxillensis V. Oswald 1988-5-25 3338 Butte Pennington Rd. just south of W. Liberty Rd. on the edge of Gray Lodge Waterfowl Management Area. 21 Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  SD116531  Crucianella angustifolia Barbara Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2I(c) mi NNE of Honcut between Oroville & Marysville, stream 29 Comment
  JEPS122259  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CDA1929  Crypsis schoenoides L. Ahart 2002-10-17 10000 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC113528  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 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
  SEINET10518369  Crypsis schoenoides Lowell Ahart 1986-11-9 Ahart 5435 Butte On dry red rocky disturbed soil, below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 270 Comment
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  JEPS117205  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  CHSC42696  Cryptantha intermedia Lowell Ahart 1987-5-6 5573 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
  UCD119835  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte along the dirt road near the water tower, above the generator, 1 mile east of Ponderosa Dam, 2 miles north of Forbestown. 475 Comment
  CHSC31551  Cryptantha rostellata L. Ahart 1972-5-8 101 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CHSC33417  Cryptantha simulans R. A. Schlising; M. S. Taylor 1980-7-5 3830 Butte 0.25 miles S of Tehama County line on Hwy 32. 1121 Comment
  UC600568  Cryptogramma acrostichoides H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 Comment
  CAS-BOT-BC85563  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Near Magalia Comment
  SEINET10531479  Cupressus macnabiana Lowell Ahart Ahart 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. Comment
  SEINET5716135 Image available Cupressus macnabiana Lowell Ahart 1985-1 5094 Butte About 2.5 miles NE of Forbestown.; Forbestown 869 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC224423  Cuscuta californica Lowell Ahart 1983-9-19 4455 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CHSC48360  Cuscuta californica var. californica V. Oswald 1988-5-25 3339 Butte Just nw of intersection of Pennington Rd. and Rutherford Rd. at Gray Lodge Waterfowl Management Area. 21 Comment
  JEPS108747  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  CHSC80753  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte Large vernal pool, east of the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10496626  Cuscuta indecora Mary Susan Taylor 1980-9-12 Taylor 3331 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
  CHSC48362  Cuscuta pentagona Vernon Oswald 1987-6-12 2997 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  JEPS118062  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 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 Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD3819  Cuscuta suksdorfii E. B. Copeland 1931-7-17 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  SEINET10497512  Cynoglossum grande Mary Susan Taylor 1979-3-20 Taylor 1943 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  UC436303  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  UC1609482  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river) 1036 Comment
  CAS-BOT-BC114741  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC41771  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte 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
  CHSC107575  Cyperus eragrostis Lowell Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile HOuse Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC31953  Cyperus eragrostis J. D. Jokerst; M. S. Taylor, R. A. Schlising 1980-5-18 721 Butte Somewhat below the top of Cohassett Ridge on slope above (North) of Mud Cr. 243 Comment
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UCD141036  Cyperus erythrorhizos L. Ahart 1974-11-9 672 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 Butte 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 Hwy 70, about 0.5 mile north of the Cresta Power House. 610 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  RSA0106563  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte On the northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  SEINET10467193  Cyperus strigosus Mary Susan Taylor 1978-9-8 Taylor 1881 A Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC2476  Cypripedium fasciculatum W. Fitzwater 1958-3-12 Butte Near Stirling City. ... Field redacted by CHSC, contact the data manager for more information 1463 Comment
  SEINET10470085  Cypripedium fasciculatum Mary Susan Taylor 1981-5-29 Taylor 3817 Butte T23N R7E nw/nw sec 29, Bucks Lake quad. Along Buckhorn Creek on S side, about midslope, ca. 200 ft W of 23N18.5, ca. 1 mi SW of Grizzly Mt, ca. 13 air mi NE of Pulga. Dense, shaded, moist Yellow Pine Forest; 5200 ft. 1585 Comment
  CDA43421  Cytisus scoparius D. G. Kelch 2012-9-19 12 .36 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC109588  Dactylis glomerata Lowell Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  POM313036  Damasonium californicum H. L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 mi W of Oroville. Comment
  UC1594704  Danthonia californica Lowell Ahart 1992-7-21 6801 Butte about 2 air mi ne Philbrook Reservoir (high sides of snow lake on s side of Hollow); Coon Hollow 1737 Comment
  CDA34740  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte On the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  CHSC84373  Darmera peltata Lowell Ahart 2003-8-26 10547 Butte On the bottom of the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 6 miles (air) northeast of Feather Falls. 975 Comment
  CHSC49435  Datura stramonium var. tatula Vernon Oswald 1987-8-13 3211 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CAS-BOT-BC8067  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  POM196083  Delphinium nuttallianum E. B. Copeland 1929-6-12 1211 Butte chaparral near north Willow Creek. 1524 Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CHSC51902  Delphinium patens subsp. patens B. M. Bounous 1987-4-1 11 Butte N end of Table Mtn, ca 6 mi N of Oroville, ca 100 yds W of Cherokee-Table Mtn Rd. 335 Comment
  CHSC59804  Delphinium patens subsp. patens Diana Licky 1981-5-5 Butte Concow area. Comment
  SEINET12091629  Delphinium variegatum Unknown 1984-1 10 Butte Extensive population on NW side of State Hwy. 70, 0.1-2.0 mi NE of its junction w/ Palermo Rd 61 Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  CHSC11981  Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville. Border of 'Lily Pond'. 1750 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
  LA206368  Deschampsia cespitosa A. A. Heller; 1928-7-10 14621 Butte Butte Meadows Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  CHSC2518  Dicentra formosa W. Fitzwater 1958-4-26 Butte Below Forest Ranch, ca. 15 mi. NE of Chico. Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
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  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC21268  Dichelostemma multiflorum M. S. Taylor 1974-3-5 72 Butte Around entrance to Richardson Springs, ca. 4 mi n of Chico. 121 Comment
  CHSC22949  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC89846  Dichelostemma multiflorum L. P. Janeway; B. Castro 2004-6-13 8133 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  RSA725064  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  UC203548  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 mi n Oroville (near Table Mountain) Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  CHSC4716  Dichelostemma volubile R. Carter 1966-4-30 387 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC502515  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CAS-BOT-BC502516  Dichelostemma volubile A. A. Heller 1913-5-28 I 0765 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CHSC94764  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS115002  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CAS-BOT-BC151922  Diplacus douglasii Clare B. Hardham 1978-4-17 21556 Butte Lava - Lobb Mountain Comment
  CHSC33585  Diplacus grandiflorus M. S. Taylor 1981-5-5 3599 Butte E side of Lumpkin-La Porte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC62786  Diplacus grandiflorus L. P. Janeway 1993-6-3 4368 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). On road cutbank. 731 Comment
  SEINET10570111  Diplacus grandiflorus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4230 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC153213  Diplacus kelloggii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC30718  Diplacus layneae M. S. Taylor 1980-5-27 2660 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC44748  Diplacus layneae R. Banchero 1980-6-14 216 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CHSC63667  Diplacus torreyi B. Castro; R. Zabell 1989-6-8 314 Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd. By old logging road in vicinity of meandering creeks. 1005 Comment
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC38709  Diplacus tricolor Vernon Oswald 1983-4-20 357 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.) 85 Comment
  CHSC37119  Disporum hookeri L. Ahart 1982-9-13 3810 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CDA34621  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. Comment
  JEPS115045  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC52454  Dodecatheon clevelandii subsp. patulum John Copeland 1980-1-19 3 Butte 50 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99, ca 5 mi N of Chico. Comment
  UC195373  Dodecatheon clevelandii subsp. patulum A. A. Heller 1914-2-16 11178 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC27955  Dodecatheon hendersonii M. S. Taylor 1979-3-20 1944 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  SEINET10449649  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor 1981-3-16 Taylor 3405 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC41262  Dodecatheon jeffreyi S. C. Morey 1983-7-21 481 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  CHSC33658  Downingia bacigalupii R. A. Schlising; M. Merryman, J. Fuller 1981-7-28 4173 Butte N of Inskip in NE part of county; Coon Hollow. 1691 Comment
  UC28961  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1889 Butte near Chico Comment
  UC336558  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1890 Butte near Chico Comment
  RSA337380  Downingia cuspidata L. Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca 1.5 miles N and 0.5 miles E of Honcut, ca 12 miles S of Oroville. 50 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  RSA517015  Downingia ornatissima Barbara Ertter, L. Ahart 1986-4-13 5893 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  UC1609088  Downingia ornatissima var. ornatissima Lowell Ahart 1993-5-17 6952 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  SEINET10448467  Draba verna Lowell Ahart 1984-2-27 Ahart 4497 Butte Peter Ahart Ranch, NE of Honcut, ca. 12 miles S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  SFV11589  Draperia systyla M. L. Vincent 1968-6-10 838 Butte Sierra Nevada 1.2 miles south from Cresta Power House sign, North Fork Feather River. 460 Comment
  UC1124234  Draperia systyla J. E. Sowder, A. E. Wieslander 1933-6-24 90 Butte 0.5 mi E of Inskip; Chico Quad. 1432 Comment
  CAS-BOT-BC401555  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City 1750 Comment
  UC115213  Dudleya cymosa Mrs. R. M. Austin May 1896 123 Butte Iron Canyon Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  CHSC40903  Dysphania botrys Lowell Ahart 1985-11-7 5237 Butte About 80 feet below the high water line of Lake Oroville, on a silt bar along the South Fork of the Feather River, about 400 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  JEPS124156  Dysphania botrys Lowell Ahart 2015-11-7 20617 -A Butte About 1/4 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
  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
  SEINET3928558  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, CA, at edge of a driveway along Mangrove Ave. by intersection with E 7th Ave.; 0 95 Comment
  CAS-BOT-BC197103  Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  UCD41384  Echinochloa crus-galli E. Dean; with J. Ditomaso and E. Healy 2001-8-20 855 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
  UCD60909  Echinochloa crus-galli L. 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
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  UCD61105  Echinochloa muricata E. M. Johnston 1915-7-1 149 -J Butte Biggs. Comment
  UC1254615  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CDA4582  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC33245  Eclipta prostrata Mary Banchero 1979-9-23 40 Butte SW of Chico and e of Ordbend at w margin of Butte Co. at Sacramento River and Ord Ferry Road. 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
  SEINET10479912  Elatine Lowell Ahart 1985-11-7 Ahart 5231 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
  SEINET10447970  Elatine rubella Mary Susan Taylor 1982-4-28 Taylor 4356 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS98417  Eleocharis acicularis Lowell Ahart 2000-6-5 8447 Butte On the N margin of a large wash, ca 100 yards W of the road crossing, Peter Ahart Ranch, ca 1 3/4 miles N and 1 1/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 36 Comment
  UCD49689  Eleocharis acicularis var. occidentalis L. Ahart 2000-9-15 8691 Butte Normal sized plants, on wet bare sand, 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
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  UC398895  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville 1500 Comment
  RSA715927  Eleocharis decumbens L. Ahart 2000-6-29 8541 Butte Flea meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CHSC28555  Eleocharis engelmannii M. S. Taylor 1978-7-21 1842 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC65994  Eleocharis engelmannii Vernon H. Oswald 1996-5-9 7542 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the drying bed of a seasonal marsh (N end of Tract 4.2, Sanctuary II). 33 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 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
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC38116  Eleocharis macrostachya R. L. Ondricek-Fallscheer 1983-5-10 172 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 195 Comment
  CHSC78184  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC78188  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CHSC94556  Eleocharis macrostachya Lowell Ahart 2006-9-13 13315 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC78300  Eleocharis montevidensis Lowell Ahart 2000-6-21 8497 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
  CHSC78399  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  RSA718781  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow 1082 Comment
  UC1586534  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte 2 mi E of Honcut (Joie Osgood Ranch) 45 Comment
  CHSC78302  Eleocharis quinqueflora Lowell Ahart 2000-6-16 8488 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
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 Comment
  CDA33180  Eleocharis quinqueflora L. Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City Comment
  SEINET7587015 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-7 8555 Butte Justwest of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC68450  Eleocharis suksdorfiana L. P. Janeway 1988-7-29 3113 Butte Meadow on south side of Butte Creek 1/2 mi west of Cherry Hill. 1402 Comment
  CHSC61551  Elymus elymoides subsp. californicus Lowell Ahart 1993-6-20 7005 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC101066  Elymus glaucus R. A. Schlising; R. Preston, R. Banchero 1981-6-22 4107 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  CHSC31719  Elymus glaucus L. Ahart 1977-6-16 1420 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  JEPS116072  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  SEINET10661843  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 Ahart 10959 Butte T17N, R4E, northeast 1/4 Section 11. On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  SBBG707  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 mi NW of Chico Comment
  CAS-BOT-BC410228  Enemion occidentale J. H. Morrison 1933-4-10 s.n. Butte Near Durham Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  SEINET10453052  Epilobium canum subsp. latifolium Mary Susan Taylor 1979-10-13 Taylor 2249 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC51005  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  JEPS95939  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1999-8-13 8171 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
  RSA0118758  Epilobium ciliatum subsp. glandulosum Lowell A. Ahart 2014-7-13 19653 Butte East part of a large wet meadow, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1564799  Epilobium ciliatum subsp. glandulosum V. Oswald and L. Ahart 1989-7-12 3854 Butte meadow near headwaters (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1901 Comment
  CHSC28438  Epilobium cleistogamum J. D. Jokerst 1979-5-12 285 Butte Adjacent to Vernal Pools, ca. 1.0 mi. S.E. of Chico Muni Airport, E. of Cohasset Hwy. Comment
  CHSC102619  Epilobium densiflorum Lowell Ahart 2009-7-9 16027 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC45336  Epilobium obcordatum Vernon Oswald 1983-8-17 987 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CHSC38563  Epilobium pallidum Vernon Oswald 1983-5-25 554 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  UC600560  Epilobium torreyi H. F. Copeland July, 1930 Butte Jonesville Comment
  UCD80483  Epilobium torreyi CNPS SN Foothill Team 2005-5-28 SNNR 0207 a Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek where the plateau above the creek ends. 159 Comment
  CHSC42397  Epipactis gigantea Lowell Ahart 1987-6-9 5729 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
  CHSC116290  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC63793  Equisetum laevigatum Gerald A. Winter 1989-4-15 16 Butte Ca. 1 yd from n side of Big Chico Creek, ca. 100 yds e of diversion dam but before salmon hole. 60 Comment
  CHSC66068  Equisetum laevigatum Vernon H. Oswald 1996-5-22 7617 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
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  JEPS113672  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET10507722  Eragrostis pectinacea Lowell Ahart 1984-9-24 Ahart 4811 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CAS-BOT-BC284085  Eragrostis pectinacea var. pectinacea John Thomas Howell 1959-9-20 34687 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC100523  Eragrostis pectinacea var. pectinacea Lowell Ahart 2008-11-4 15405 Butte On the east edge of the paved road, about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. 273 Comment
  CHSC42142  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-11-24 4811 Butte Along the edge of Middle Honcut, Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. 32 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
  CHSC36079  Eremogone cliftonii R. E. Preston; R. Banchero, R. A. Schlising 1982-6-23 4300 Butte N of Concow area and n of Flea Mt. in central part of county; at roadside. 1112 Comment
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Jul 8 2014
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC92521  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-20 1224 Butte Near Four Trees Road. 1456 Comment
  CAS-BOT-BC131666  Ericameria bloomeri J. D. Jokerst 1979-9-23 358 Butte Below summit of Humboldt Peak on west-facing slope 2042 Comment
  CAS-BOT-BC291277  Ericameria bloomeri A. A. Heller 1928-7-25 14704 Butte Butte Creek House Comment
  LA203671  Ericameria bloomeri E. B. Copeland; 1930-8-26 493 Butte Jonesville 1550.0 Comment
  CHSC46917  Erigeron bonariensis Lowell Ahart 1974-11-9 678 Butte On levees around a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC13921  Erigeron canadensis M. S. Taylor 1974-9-14 318 Butte In Police Firing Range on s side of Chico Creek, opposite Golf Course, Bidwell Park, Chico. 91 Comment
  CHSC19722  Erigeron canadensis Lowell Ahart 1974-10-5 657 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28608  Erigeron canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC296819  Erigeron divergens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC38344  Erigeron divergens Vernon Oswald 1982-12-28 35 Butte Upper Bidwell Park, Chico, just below rim rock in the ravine n of the Rifle Range. 182 Comment
  UC1586589  Erigeron foliosus var. hartwegii Vernon H. Oswald and Lowell Ahart 1991-5-31 4637 Butte along the roadbed on the s side Thermalito Diversion Pool (at the drainage on the ne side of Sycamore Hill); Lake Oroville State Recreation Area, Sycamore Hill 76 Comment
  SEINET10474621  Erigeron foliosus var. hartwegii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4211 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC300686  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1988-7-26 3622 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC295436  Erigeron karvinskianus M. S. Taylor 1981-5-21 3788 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CHSC69443  Erigeron petrophilus var. sierrensis Lowell Ahart 1997-9-6 7889 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CAS-BOT-BC295951  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SBBG128720  Erigeron philadelphicus var. philadelphicus L. Ahart 2012-5-25 18114 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CHSC108812  Eriobotrya deflexa Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 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
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  UCD100510  Eriogonum nudum W. R. Powell 1968-11-12 1614 Butte George Ellis Ranch, 200 yards north of the LaPorte Road and 4 miles southwest of Bangor. 91 Comment
  CAS-BOT-BC269856  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 839 Butte West of Pentz Comment
  CDA22637  Eriogonum nudum var. pubiflorum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  RSA722692  Eriogonum roseum Richard Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Jan 26 2017
  CHSC113601  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
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  UC426903  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville 2050 Comment
  UC726280  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte 23 mi from Oroville (along the Feather River Highway e of Jarboe Pass) Comment
  CHSC12920  Eriogonum vimineum K. R. Stern 1974-6-30 5777 Butte At roadside, 2.5 mi s of intersection of Hwy 32 and Butte Meadows turnoff, ca. 30 mi n of Chico. Comment
  CHSC31773  Eriogonum vimineum L. Ahart 1972-6-21 122 Butte On bottom of small wash. Peter Ahart Ranch, Honcut. 45 Comment
  UCD101524  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte along Feather River near Oroville. 45 Comment
  CHSC45950  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-7 626 Butte On a gravel bar along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  UC896354  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte near Cohasset; Sierra foothills Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CHSC38734  Eryngium castrense Vernon Oswald 1983-5-8 456 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  UC764149  Eryngium castrense R. F. Hoover 1937-5-19 2245 Butte 10 mi. n.w. Chico Comment
  POM219573  Eryngium castrense H. F. Copeland 1923-7-9 34 Butte Mud Creek Ranch Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  CHSC44797  Erythranthe breweri R. Banchero 1980-6-26 271 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CAS-BOT-BC151491  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 Butte South of Lumpkin ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CAS-BOT-BC153864  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC20495  Erythranthe glaucescens M. S. Taylor 1975-6-25 796 Butte Along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC44669  Erythranthe guttata R. Banchero 1980-6-6 202 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  CHSC43962  Erythranthe pulsiferae Vernon Oswald 1988-5-30 3347 Butte Humbug Rd. 1.0 mi s of Nimshew. 627 Comment
  POM298049  Erythranthe pulsiferae A. A. Heller 1915-4-12 11805 Butte Near Cohasset. Comment
  CHSC88646  Erythronium multiscapideum Linnea Hanson; Glenn Clifton 1997-3-19 369 Butte Plumas National Forest. Pulga Road at Pulga Bridge. Comment
  UC1731208  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC43796  Erythronium purpurascens Vernon Oswald 1984-7-12 1575 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  CHSC38578  Eschscholzia californica Vernon Oswald 1983-4-10 317 Butte Upper Bidwell Park, Chico, 300 ft w of the parking lot at Day Camp. 91 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
  SEINET3296966 Image available Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway ne near the Yankee Hill road. Comment
  POM125702  Eschscholzia californica var. peninsularis C. C. Bruce 1897-04 2020 Butte Foot hills, near Iron Canyon Comment
  CHSC3189  Eschscholzia lobbii Donna Kingsford 1966-3-16 Butte 1.5 miles E. of Chico on highway 32 across from City Dump. Comment
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC110031  Eucalyptus Lowell Ahart 2012-10-20 18484 Butte On the south side of the paved park road, about 50 yards east of the east side of the Deep Pen, east of the intersection of Chico Canyon Road (E8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  UC2026857  Eucalyptus Lowell Ahart 2012-10-12 18484 Butte On the south side of the paved park road, about 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. Comment
  CHSC98570  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. Ridge top row of these old trees. 235 Comment
  CHSC6007  Eucalyptus nicholii M. MacArthur 1968-6-19 250 Butte Lawn in front of Administration bld. Chico State College. 60 Comment
  CHSC28492  Eucephalus breweri M. S. Taylor; J. Jokerst 1979-7-21 2165 Butte On trail to Humboldt Peak, on Humboldt Summit. 2133 Comment
  CHSC80632  Euonymus occidentalis var. occidentalis Lowell Ahart; Vernon H. Oswald 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) southeast of Stirling City. 609 Comment
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  CHSC96222  Euphorbia peplus R. Fischer 2006-5-20 977 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  CAS-BOT-BC312197  Eurybia radulina Lowell Ahart 1988-7-24 6131 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Loer Forebestown Road west of Sunset Hill near Forbestown 731 Comment
  CHSC102534  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC45377  Fallopia convolvulus Vernon Oswald 1987-8-9 3194 Butte Hwy 32, ca. 0.2 mi s of Lomo. 1170 Comment
  CHSC109357  Fallopia japonica T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CAS-BOT-BC278799  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CDA14179  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Small colonies of bunching individuals in dry, deep shade of coniferous forest. Perennial Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC59046  Festuca subulata Lowell Ahart 1992-6-26 6784 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC35072  Ficus carica R. A. Schlising 1981-11-28 4222 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  POM57352  Filago californica A. A. Heller, H. E. Brown 1902-5-9 5515 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC437078  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  RSA31116  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico Comment
  CHSC3816  Fritillaria affinis L. E. Dunkel 1965-3-2 3 Butte Ca. 200 yards sw of Police Pistol Range in Upper Bidwell Park. 45 Comment
  SDSU19717  Fritillaria eastwoodiae Sean Ryan 2010-4-17 34 Butte 10 yards from south side of Nimshew Road, approximately 100 yards west of its intersection with Tika Lane, NW of Magalia. 750 Comment
  CHSC109131  Fritillaria recurva Lowell Ahart 2012-3-23 17797 Butte On the north side ofTen Miles House Road, about 1/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC2286  Fritillaria recurva N. Maxwell 1929-3-17 Butte Forest Ranch. 548 Comment
  CAS-BOT-BC508150  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  CHSC54347  Galium aparine Lowell Ahart 1991-4-19 6646 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  HSC32639  Galium aparine R. A. Vanbianchi 1974-4-20 240 Butte Table Mtn. 305 Comment
  HSC67626  Galium aparine J. P. Smith, J. O. Sawyer 1973-4-14 6061 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  JEPS113505  Galium bolanderi Lowell Ahart, Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  JEPS52658  Galium bolanderi Lauramay T. Dempster 1964-7-24 4048 Butte road above Jonesville 1658 Comment
  UC397359  Galium bolanderi Mrs. R. M. Austin May 1886 671 Butte Little Chico Canyon Comment
  CHSC28379  Galium grayanum M. S. Taylor; J. Jokerst 1979-7-21 2150 Butte Humboldt Peak, at Butte County-Plumas County line (Humboldt Summit). 2151 Comment
  JEPS117282  Galium murale Lowell Ahart 2010-6-1 16764 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 115 Comment
  CHSC64216  Galium porrigens var. tenue Mike Carpenter 1990-3-30 13 Butte Ca. 450 ft. E of Forbes Town Rd. Ca. 1.1 mi S of the intersection of Hwy. 162 and Forbes Town Rd. 728 Comment
  SEINET10500744  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-9-12 Taylor 3332 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC61011  Galium trifidum var. pacificum Lowell Ahart 1993-6-26 7017 Butte Near center, section 24. North of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC78270  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte Edges of a pond, on the southeast side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  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
  UC1523189  Galium triflorum M. S. Taylor and L. Ahart 1981-8-15 4194 Butte n side of Coon Hollow Rd 1.2 mi e jct with Humbug Rd (along creek, ca 12 mi ne of Stirling City); Jonesville SW quad 1676 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  SEINET10500649  Galium triflorum Mary Susan Taylor 1981-5-14 Taylor 3714 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC40302  Gamochaeta argyrinea Lowell Ahart 1985-5-31 5036 Butte Along a wash about 25 feet above the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 mile west of the Enterprise Bridge, north-east of Oroville. 274 Comment
  CAS-BOT-BC169932  Garrya fremontii H. M. Edwards 1918-1-15 s.n. Butte De Sabla Comment
  POM73529  Garrya fremontii C. C. Bruce s.n. Butte (Near) Chico. Comment
  SEINET10453489  Garrya fremontii Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3375 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  UCD66560  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCSC000103  Gastridium ventricosum C. G. Albertus 1933-5-29 s.n. Butte 0.5 mile N. of Wiek - Chico Comment
  CHSC62475  Gayophytum heterozygum L. P. Janeway 1993-7-31 4486 Butte Plumas National Forest, La Porte Ranger District. Along Cascade Road 0.6 mi north of Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank. 1066 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  CAS-BOT-BC208057  Genista monspessulana John Thomas Howell 1959-9-20 34676 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  UCD22552  Genista monspessulana James I. Mallory 1970-5-26 375 Butte Along little Butte Creek, up 100' above creek north of Paradise. 259 Comment
  CHSC51883  Gentianopsis simplex L. P. Janeway 1988-7-29 3106 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC50046  Geranium carolinianum Lowell Ahart 1990-4-8 6433 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 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
  CHSC113300  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC101272  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10495130  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4284 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  HSC100781  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, 1 (air) mi. SW of Ponderosa Dam and ~2 1/4 mi. NW of Forbestown. 671 Comment
  SEINET12331812  Gilia capitata L. Ahart, Ahart, P. 1984-1 4748 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  UC880104  Gilia capitata subsp. pedemontana A. A. Heller 1915-5-17 11877 Butte 5 mi e Chico (along Chico Creek); , e of Chico Comment
  SEINET10935970  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 Ahart 4989 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC3474  Gilia tricolor Roger Jaegel 1966-3-29 71 Butte Located two miles southeast of Cherokee on the top of Table Mountain. Cherokee. Comment
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Jan 19 2011
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  CHSC1256  Gilia tricolor subsp. tricolor A. Riker 1897-4-1 Butte Comment
  RSA638252  Gilia tricolor subsp. tricolor Michael A. Vincent, Ethan H. Freid 1998-4-6 s.n. Butte Table Mountain Comment
  CAS-BOT-BC266482  Githopsis diffusa Clare B. Hardham 4-17-?8 21552 Butte Humbug Road N of Paradise Comment
  UC727174  Githopsis pulchella subsp. campestris A. A. Heller 1941-5-9 16106 Butte Clark Road, foot of the Paradise grade Paradise Grade Comment
  RSA21308  Githopsis specularioides C. B. Wolf 1937-5-12 8653 Butte West side of So. Honcut Creek, 2.6 miles E of Bangor; Sierra Nevada Foothills. 213 Comment
  SEINET10906066  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart 213 Butte Swedes Flat road near Bangor 457 Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  CHSC78223  Glyceria declinata Lowell Ahart 2000-5-21 8377 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  UC1609511  Glyceria declinata Lowell Ahart 1993-4-5 6927 Butte ca 0.5 mi e Jct of Hwy 99 and Cottonwood Rd (on s side of Cottonwood Rd) 36 Comment
  UC1594725  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte about 2 air mi s Snow Mountain (about 0.5 mi n of Carr Mine) 1767 Comment
  CHSC102991  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 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. 209 Comment
  SEINET10473435  Gnaphalium Mary Susan Taylor 1977-11-12 Taylor 1536 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC302471  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville Comment
  CHSC104813  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC28684  Goodyera oblongifolia M. S. Taylor 1979-9-9 1920 Butte Inskip on the Skyway. 1467 Comment
  UC129187  Goodyera oblongifolia Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC175440  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte n Oroville (Table Mountain Olive Ranch); Table Mountain Olive Ranch Comment
  CHSC47987  Hackelia micrantha Vernon Oswald; Lowell Ahart 1987-7-1 3078 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Near a streamlet entering the large lake. 1935 Comment
  CAS-BOT-BC282857  Hainardia cylindrica Lowell Ahart 1974-6-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CAS-BOT-BC306289  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  JEPS119776  Hedypnois rhagadioloides Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 west of Highway 32, south part of Upper Bidwell Park, about 8 /12 miles (air) northeast of Chico. Comment
  CHSC33944  Helenium bigelovii M. S. Taylor; L. Ahart 1981-8-16 4203 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC134590  Helenium bigelovii Mrs. R. M. Austin 1896-7-1 790 Butte swamps Colby Comment
  UC478462  Helianthella californica subsp. nevadensis E. B. Copeland 1931-6-22 695 Butte at the Summit; Jonesville Comment
  CAS-BOT-BC314759  Helianthella californica var. nevadensis Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CDA13704  Helianthus bolanderi G. F. Hrusa 1997-8-5 14063 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC108137  Heliotropium europaeum Lowell Ahart 2011-10-30 17732 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC60958  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC26762  Hemizonia congesta subsp. luzulifolia M. S. Taylor; M. Hayes 1977-8-16 1445 Butte On s side of Pentz Rd near culvert, ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  CDA7021  Hemizonia congesta subsp. luzulifolia A. C. Browne 1951-8-23 Butte Robinson s Corners, Gridley-Oroville Road. 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
  CHSC33681  Hemizonia pungens subsp. septentrionalis L. Ahart 1981-5-16 2803 Butte On Gray Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  UC478493  Heracleum lanatum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  CHSC66073  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald 1996-5-22 7621 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 Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  JEPS107420  Hesperevax acaulis var. robustior Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  SD40685  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  CAS-BOT-BC175996  Hesperolinon californicum Lowell Ahart 1980-5-12 2261 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC67247  Hesperolinon californicum James D. Jokerst; Barbara Castro 1992-5-19 3351 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Collected at the veiny Monardella rediscovery site. 76 Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  CHSC109201  Hesperolinon micranthum B. Castro; L. P. Janeway 2004-6-13 1468 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road, 2.25 air mi E of Forbestown; near headwaters of costa Creek; p.15 rd mi NW of jct with Abernathy Rd. 829 Comment
  CHSC48602  Hesperolinon micranthum Vernon Oswald 1983-7-6 805 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. Growing on an old logging road in yellow pine forest. 1036 Comment
  CHSC30986  Heteranthera limosa M. S. Taylor 1978-7-21 1847 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in ricefield. 30 Comment
  UC1586396  Heteranthera limosa Lowell Ahart 1991-7-21 6669 Butte in rice field about 1/4 mi w Butte City Highway (w of Rice Experiment Station, about 3 mi w of Hwy 99, n of Biggs) 30 Comment
  SEINET10905358  Heteranthera limosa Mary Susan Taylor 1978-7-22 Taylor 1847 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC54577  Heteranthera rotundifolia Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6669 Butte In a rice field, about 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. 30 Comment
  UC1609051  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte about 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CAS-BOT-BC143637  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA0072450  Heteromeles arbutifolia L. Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yards south of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile west of Highway 32, about 10 miles northeast of Chico. 243 Comment
  UC1476848  Hibiscus lasiocarpos Lowell Ahart 1979-9-8 Butte along rd. w. of by 3 mi. Nelson (Nelson is ca. 8 mi. n.w. of Oroville) 35 Comment
  CHSC66670  Hibiscus lasiocarpos var. occidentalis Vernon H. Oswald 1996-7-17 8067 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CAS-BOT-BC312343  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC95125  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  RSA483122  Hirschfeldia incana L. Ahart, P. Ahart 1984-6-10 4689 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  JEPS119890  Hoita macrostachya Lowell Ahart 2012-6-5 18159 Butte On the south side of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC1562435 Image available Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte about 2 mi ne Forbestown (along the road to the Forbestown Reservoir) 822 Comment
  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
  CAS-BOT-BC149862  Holodiscus discolor Lowell Ahart 1981-7-7 2931 Butte Forbestown 750 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC102174  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC61539  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte Along the Cherokee Canal, near bridge of Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  HSC92444  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 12 mi. SW of Gridley 30 Comment
  CHSC36109  Hordeum marinum subsp. gussoneanum K. Bridwell 1978-5-25 109 Butte Ca. 300 yds s of Pentz Rd, ca. 3 mi e of intersection with Hwy 99, ca. 12 mi se of Chico. 76 Comment
  CHSC6751  Hordeum marinum subsp. gussoneanum Marilyn Lee 1968-5-3 159 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC26471  Hordeum murinum subsp. leporinum P. Moyer 1972-3-11 126 Butte 100 ft. from Citrus Ave. Bridge on slope of n bank of Chico Ck. 60 Comment
  CHSC45196  Horkelia fusca subsp. parviflora Lowell Ahart 1984-7-19 4753 Butte Near the edges of a meadow, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 air miles north-east of Stirling City. 1371 Comment
  RSA4664  Horkelia tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville. 1550 Comment
  CHSC43123  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CAS-BOT-BC537883  Horkelia tridentata var. flavescens F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CAS-BOT-BC536260  Horkelia tridentata var. tridentata Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  UCD119493  Hydrophyllum occidentale M. S. Taylor 1980-5-4 1997 A Butte Along Millsap Bar Rd., ca. 4 mi ne of its jct with Brush Creek Rd, ca 26 mi ne of Oroville. 1005 Comment
  CHSC28820  Hypericum anagalloides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 412 Butte Top of North Table Mt, 100 m NW. of the intersection of Cherokee Rd and east edge of section 17. 396 Comment
  JEPS94061  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte ca. 7 (air) mi. n. Oroville (seep area w. of cattle chute on w. side of Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  SEINET3082827 Image available Hypericum anagalloides Marc Mittleman 1980-8-1 224 Butte Chico (little) Creek, adjacent to China Garden Springs 262 Comment
  POM285806  Hypericum androsaemum J. H. Morrison, Lyman Benson, J. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  SEINET10472176  Hypericum concinnum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4059 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  JEPS115670  Hypericum perforatum Lowell Ahart 2009-5-30 15783 Butte Northeast 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 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC204399  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte hills ca. 5 mi. e. Oroville (also between Red Bluff & Redding, and in Sacramento canyon some miles below Delta <in> Shasta Co.) Comment
  CDA31947  Hypochaeris glabra L. Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC44902  Hypochaeris radicata Lowell Ahart 1988-7-31 6160 Butte Along the east edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC60954  Hypochaeris radicata Lowell Ahart 1993-6-26 7016 Butte An old logging road, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC52481  Iris macrosiphon Stacy Scott 1981-4-14 Butte 1.2 km E of hwy323 and Santos Wayjct on Santos Way, ca 11.2 km NNE of Chico. Comment
  CAS-BOT-BC61871  Isoetes nuttallii Lowell Ahart 1982-6-15 3563 Butte About 8 miles east of Feather Falls, about 1 1/2 miles east of Camp 18 1000 Comment
  CHSC40399  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC60644  Isoetes orcuttii Vernon H. Oswald 1993-4-12 5260 Butte North Table Mtn. Near the SW edge of Flag Canyon. 365 Comment
  CHSC78229  Isoetes orcuttii Lowell Ahart 2000-6-29 8585 Butte In the southwest part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
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Oct 30 2007
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  CHSC107576  Isolepis setacea Lowell Ahart 2011-8-19 17644 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  UCR262435  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15575 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10472533  Juncus Mary Susan Taylor 1980-5-27 Taylor 2671 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC71200  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC49605  Juncus balticus Vernon Oswald 1984-6-11 1284 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  SEINET10971375  Juncus balticus Lowell Ahart 1984-5-6 Ahart 4586 Butte T17N R4E. Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 mi N and 3 mi E of Honcut; ca. 12 mi S of Oroville. Foothill Woodland; 50 m. 50 Comment
  CHSC99746  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  UCD80387  Juncus balticus subsp. ater CNPS SN Foothill Team 2005-5-25 SNNR 0266 a Butte City of Chico, Upper Bidwell Park, .75 m west of Big Chico Creek. 209 Comment
  JEPS114422  Juncus brachyphyllus Lowell Ahart 2008-7-9 15069 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  JEPS114975  Juncus brachyphyllus Lowell Ahart 2008-6-13 14814 Butte Bottom of a small mined wash, about 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 324 Comment
  JEPS98459  Juncus brachyphyllus Lowell Ahart 2000-6-6 8459 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. 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
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, 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. 1371 Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC61350  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS87455  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  CHSC111068  Juncus effusus subsp. pacificus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16759 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of of gravel Lumpkin Road; UTM 10 655439 east, 4387540 north. 1242 Comment
  JEPS110157  Juncus effusus var. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  CHSC39986  Juncus ensifolius L. Ahart; P. Ahart 1983-7-29 4223 Butte Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Along dirt road. 750 Comment
  CHSC95229  Juncus exiguus L. P. Janeway 2006-8-6 8828 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  UC1564807  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-7-12 3848 Butte 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  UC1609084  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte about 1/2 mi s of Quartz Hill (tracks of a logging road) 1219 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC78212  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte In tire ruts 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
  JEPS122156  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte South of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC110148  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte Peter Ahart Ranch near Honcut. 50 Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CHSC93491  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12581 Butte On the bottom of a tire track through a marshy area, about 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parkin area, North Table Mountain, about 7 miles (air) north of Oroville. 377 Comment
  CAS-BOT-BC110771  Juncus mertensianus V. Oswald; L. Ahart 1988-7-29 3652 Butte Ca. 5 miles (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  CHSC49628  Juncus occidentalis Vernon Oswald 1984-7-31 1635 Butte Scotts John Creek, 0.9 mi n of 26N27. Near the creek. 1786 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC61352  Juncus oxymeris Lowell Ahart 1993-7-29 7133 Butte In a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles southeast of Bald Mountain, northeast of Stirling City. 1493 Comment
  UC1586590  Juncus patens Vernon H. Oswald and Lowell Ahart 1991-5-31 4638 Butte s side Thermalito Diversion Pool (and on the n side of Oroville Dam Blvd East, between the 4 and 5 mi posts (ca 4.5 mi)); Lake Oroville State Recreation Area, Dan Beebe Trail 85 Comment
  CDA34630  Juncus tenuis L. Ahart 2009-6-19 15918 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC31444  Juncus tenuis L. Ahart 1980-9-10 2637 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC71202  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte Northwest of the lone tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC96889  Juncus triformis Lowell Ahart 2007-6-12 14062 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC109962  Juncus trilocularis P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25705 Butte 0.5 air miles NE of Little Bald Rock, NE of and below Bean Creek Road 0.6 road miles from bald Rock road, northern Sierra Nevada Highlands. 1005 Comment
  CHSC32758  Juncus uncialis J. D. Jokerst 1981-4-10 1289 Butte Top of North Table Mt, area between Beatson Hollow and Coal Cr Canyon. 335 Comment
  CDA37364  Juncus usitatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC111175  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southest of Gridley. 19 Comment
  CHSC97209  Juncus usitatus Lowell Ahart 2007-7-31 14400 A Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  JEPS113763  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale 26 Comment
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 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
  CHSC28868  Juniperus californica M. S. Taylor 1980-3-1 2334 Butte Ca. 100 ft n of Neal Rd, ca. 2 1/2 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 137 Comment
  CHSC28873  Juniperus californica M. S. Taylor; J. Jokerst 1980-2-23 2321 Butte Ca. 50 ft nw of Neal Rd, ca. 2 mi e of Hwy 99, ca. 1 mi e of Neal Rd dump, ca. 7 mi s of Chico. 121 Comment
  CHSC111417  Juniperus lusitanica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Twig from a very large tree, on dry excellent soil, Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  RSA293267  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Immediately along the Feather River, 2.9 miles south of the Plumas Co line. [Along CA 70.] 550 Comment
  CHSC102712  Kickxia elatine Lowell Ahart 2009-7-3 15991 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  SEINET10782600  Kickxia elatine Renate K. Stern 1972-9-19 Stern 3779 Butte Dry, open area, vic. E bank of the Sacramento River, Llano Seco Rancho, ca. 10 mi SW of Chico. Comment
  CHSC103990  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
  UC1594708  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  JEPS110180  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC340332  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  UCD133614  Lagophylla glandulosa Joseph M. DiTomaso 1976-5-23 477 Butte Lake Oroville, peninsula at south end. 274 Comment
  CAS-BOT-BC341322  Lagophylla glandulosa C. B. Wolf; E. R. Johnson 1934-10-5 6159 Butte 11 mi. from Oroville on rd. to Paradise, Sacramento Valley 152 Comment
  CHSC104013  Landoltia punctata Lowell Ahart 2010-6-12 16806 Butte In pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CAS-BOT-BC337906  Lasthenia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 2 Butte On North Table Mtn., S of Paradise on Cherokee Rd., at the east end of Table Mtn. Proper 381 Comment
  UC1562501  Lasthenia fremontii Barbara Ertter with Lowell Ahart 1986-4-13 5894 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CAS-BOT-BC354116  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte One mile N of Rock Creek along the county rd parallelling US Highway #99E. Comment
  SEINET10475352  Lasthenia fremontii Lowell Ahart 1983-5-12 Ahart 3974 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC29994  Lathyrus angulatus L. Ahart 1980-4-28 2111 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD116537  Lathyrus angulatus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3277 Butte Peter Ahart Ranch ca. 2.5 miles NNE of Honcut between Oroville & Marysville, dried vernal pool previously plowed as grainfield, now reverted, rocky; higher ground around pool 29 Comment
  CHSC76940  Lathyrus jepsonii var. californicus Margie Collins 1894-5-1 Butte Chico Creek. Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CDA42904  Lathyrus latifolius L. Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET12164065  Lathyrus nevadensis Unknown 1980-1 19 Butte ca .6miN of Lumpkin Rd, ca .2miW of Nutmeg Crk tributary, ca 2yds E of a dirt rd see comments 732 Comment
  CHSC48507  Lathyrus nevadensis var. nevadensis Vernon Oswald 1985-4-29 1731 Butte Bald Rock Rd. 0.3 mi ne of the trailhead to Big Bald Rock. 975 Comment
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  SEINET10452338  Lathyrus sulphureus Lowell Ahart 1983-5-13 Ahart 3989 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC102976  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC112435  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte Waste area along fence, on the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about 1 mile northeast of Biggs. 31 Comment
  CAS-BOT-BC321781  Layia fremontii Lowell Ahart 1980-4-21 2104 Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC2378  Layia fremontii R. Carter 1965-5-14 200 Butte Found 1.4 mi. W of Hwy. 40A on Old Chico Rd. along N side of road, these taken along fence. 51 Comment
  JEPS107861  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  RSA633307  Layia fremontii Michael A. Vincent, Ethan H. Freid 1998-4-6 8113 Butte Table Mountain Comment
  CHSC49554  Leersia oryzoides Vernon Oswald 1987-6-18 3005 Butte Butte Creek Reserve on the s side of the creek, n of the Skyway, ca. 0.25 mi w of the double set of transmission lines. 85 Comment
  CHSC66460  Leersia oryzoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7760 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the center of the W side of Tract 7.1, Sanctuary 1. 33 Comment
  CHSC72255  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte West of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  JEPS94891  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte about 7 air mi n Oroville (w of the cattle chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  NY76545  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near entrance to Gray Lodge Waterfowl Management Headquarters, west of Pennington Road, ca 1 mile southwest of Gridley, Valley Grassland 35 Comment
  UCSB64016  Lepidium latifolium Ahart, Lowell 1981-9-10 Butte Near the entrance to the Gray Lodge Waterfowl Management Area; west of Pennington Road; about 12 miles southwest of Gridley 30 Comment
  SEINET10448587  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 58 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC101676  Lepidium nitidum var. nitidum Lowell Ahart 2009-4-26 158608 -A Butte Upper Bidwell Park, on the west side of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC35012  Lepidium strictum R. E. Preston 1982-3-6 185 Butte Ca. 100 yds n of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  SEINET10874435  Lepidium strictum Lowell Ahart 1983-4-10 Ahart 3929 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CAS-BOT-BC13066  Lepidium virginicum var. menziesii H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  SEINET3015366  Leptochloa dubia L. Ahart 1997-9-6 7894 Butte On the W side of Hwy 70, just N of Rich Gulch Rd, about 1 1/2 mi N of the bridge across the West Branch of Lake Oroville. 396 Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  CAS-BOT-BC273951  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1-1 s.n. Butte Biggs Comment
  CHSC36716  Leptosiphon bolanderi R. Schlising; R. Banchero 1980-5-13 3587 Butte Serpentine outcrop above Hwy 70 and above Bardees Bar on N Fork of Feather River, ca 2 mi S of Pulga. 441 Comment
  JEPS120029  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CAS-BOT-BC341789  Lessingia nemaclada John Thomas Howell 1962-6-16 37551 Butte Magalia 731 Comment
  CHSC113164  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  RSA388118  Lessingia virgata J. E. Sowder 1933-6-15 1423 Butte 1 mile west of Tres Vias 46 Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10971606  Lilium kelleyanum Mary Susan Taylor 1980-7-6 Taylor 3069 Butte T26N R4E ne sec 14, Butte Meadows quad; N side of Old Humboldt Rd, ca. 0.8 mi NE of Cherry Creek Campground, around spring which crosses road. With R.A. Schlising. 1463 Comment
  SEINET10469576  Lilium pardalinum Mary Susan Taylor 1978-7-19 Taylor 1735 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC508459  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC133053  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  UC600465  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  CAS-BOT-BC110625  Limnanthes alba Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC110626  Limnanthes alba Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  UCD22634  Limnanthes douglasii Joseph Laferriere 1982-4-18 22 Butte Table Mountain, streambank 1/2 mile east of road, 5 miles north of Oroville. 384 Comment
  CHSC12114  Limnanthes douglasii subsp. rosea M. F. Smith 1972-3-7 3 Butte On Skyway about 500 ft. east of Notre Dame Ave. 60 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
  CHSC53968  Limnanthes floccosa subsp. floccosa Vernon H. Oswald 1991-4-24 4531 Butte Hwy 99 between Broyles Rd and Hamilton Nord Cana Hwy, north of Chico. Along drainages of the west side of Hwy 99. 59 Comment
  UC1748336  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte ca. 100 m SE of Keefer Road Comment
  CHSC92162  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte 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 Road. 28 Comment
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  SEINET10496799  Linanthus filipes Mary Susan Taylor 1974-4-20 Taylor 181 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. 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
  CHSC117420  Lindernia dubia var. anagallidea Lowell Ahart 2016-5-30 20883 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC37385  Lindernia dubia var. anagallidea R. A. Schlising 1980-9-2 3989 Butte Bidwell R. State Park west of Chico. Comment
  CHSC42116  Lindernia dubia var. anagallidea Lowell Ahart 1986-11-9 5444 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  JEPS124342  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS88435  Lindernia dubia var. anagallidea Vernon H. Oswald and Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, in the NW corner of Tract 9.1., Sanctuary I, a unit managed for watergrass (Echinochloa). 30 Comment
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  SEINET11750564  Lipocarpha micrantha R. A. Schlising 1979-1 3501 Butte along Sacramento River W of Chico, just N of Chico Landing site in Bidwell River State Park Comment
  CHSC59029  Listera convallarioides Lowell Ahart 1992-6-26 6780 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  UC402468  Lithophragma bolanderi Mrs. R. M. Austin 1896-1 254 Butte Mud Creek Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise Comment
  CHSC46953  Logfia gallica Lowell Ahart 1975-6-20 799 Butte 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
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  CHSC46327  Lomatium marginatum Lowell Ahart 1989-5-26 6273 Butte Just below the high water line 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
  RSA713002  Lomatium marginatum L. Ahart 2006-5-8 12606 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 north of Oroville 384 Comment
  UCD80001  Lomatium marginatum CNPS SN Foothill Team 2006-5-23 SNNR 0784 Butte BLM Parcels near Paradise. 648 Comment
  CHSC40435  Lomatium utriculatum Lowell Ahart 1985-4-29 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  JEPS48084  Lomatium utriculatum P. C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte at w. side Pulga Bridge (N. Fork Feather R.); , Pulga Bridge Comment
  SEINET10906779  Lomatium utriculatum Mary Susan Taylor 1982-5-2 Taylor 4392 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CHSC97322  Lonicera hispidula L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 0.6 km northwest of Lumpkin Road, 2.3 km west of Feather Falls town site. 777 Comment
  JEPS115565  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail 381 Comment
  UC1609033  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte 6 (air) mi ne Feather Falls (about 200 yards w of the bridge, w side of river); Fall River 1036 Comment
  CHSC38397  Lonicera maackii Vernon Oswald 1983-5-2 408 Butte Upper Bidwell Park, along the N edge of Hooker Oak Recreation Area. Comment
  UC1129033  Lotus crassifolius var. crassifolius P. L. Johannsen 1936-7-21 959 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  UC127775  Lotus grandiflorus var. grandiflorus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS115566  Lotus micranthus Lowell Ahart 2009-5-23 15758 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road 381 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
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET2062315 Image available Lotus oblongifolius Marc Mittleman 1980-8-1 226 Butte Little Chico Creek adjacent to china Garden Springs. 262 Comment
  POM27729  Lotus oblongifolius var. nevadensis C. C. Bruce 1898-06 2431 Butte Forest Ranch. Comment
  SEINET10452017  Lotus stipularis Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4646 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 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
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  JEPS121788  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  RSA0118783  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC33524  Ludwigia palustris R. A. Schlising 1981-7-11 4133 Butte NE of Oroville and NW of Brush Creek, near French Creek Road crossing of French Creek. 613 Comment
  CHSC38574  Ludwigia palustris Vernon Oswald 1983-8-26 1029 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. On the bed of Chico Creek. 85 Comment
  UC727080  Lupinus A. A. Heller 1938-4-3 15010 Butte between Pebtz and Cherokee; between Pebtz and Cherokee Comment
  RSA0036525  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  UC1609293  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road); sw of Forbestown 609 Comment
  CHSC25007  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  SEINET5766816 Image available Lupinus albifrons H. E. Brown 1897-1 201 Butte near Clear Creek Comment
  SEINET10488403  Lupinus albifrons T. R. Norton 1977-4-17 Norton 6 Butte Shrub, ca 3 ft high. Small population, ca 7.5 miles e of chico, 3.5 miles sw of Paradise along s side of honey run road. Rocky soil on road bank within Chaparral 244 Comment
  RSA795643  Lupinus albifrons var. albifrons L. Ahart 2012-4-20 17895 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  UC865452  Lupinus arbustus A. A. Heller 1915-6-25 12016 Butte Chico Meadows; Sierra Nevada, Chico Meadows 1219 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  CHSC90515  Lupinus bicolor Michael D. Mayes 1983-4-19 16 Butte Ca. 6 mi ese Chico s side of Butte Creek, 75 yds w of Covered Bridge. 152 Comment
  HSC71549  Lupinus bicolor J. P. Smith 1973-3-22 5913 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA0072104  Lupinus bicolor Daisie Huang 2006-4-15 06041566 Butte Upper Bidwell Park, Horseshow Lake. 114 Comment
  UC726014  Lupinus bicolor A. A. Heller 1940-4-28 15562 Butte opposite the golf links e Chico; e of Chico Comment
  UCD107193  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte eight miles north of Oroville near the western base of Table mountain. Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 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
  SEINET6655084  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 4721 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.; 0 1500 Comment
  CHSC93976  Lupinus latifolius var. columbianus R. D. Fischer 2004-6-20 776 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On slope above creek. 1371 Comment
  CHSC96219  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  SEINET10452088  Lupinus latifolius var. columbianus Heidi H. Schmidt 1993-6-15 Schmidt 860 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  CHSC90191  Lupinus nanus Eric M. Haney 1989-4-21 1 Butte Found in Bidwell Park, ca. 100 m e of Horseshoe Lake. Comment
  CHSC96420  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  CHSC3251  Lupinus nanus var. apricus Virginia Hagaman 1966-3-28 90 Butte Table Mountain. Comment
  CHSC3829  Lupinus nanus var. vallicola R. L. Adams 1964-4-12 72 Butte Junction Hwy. 32 and River Rd. on S. side 32. Comment
  JEPS108851  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  JEPS120590  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC38514  Lupinus polycarpus Vernon Oswald 1983-3-23 202 Butte Upper Bidwell Park, Chico, 50 ft e of the Omnicron Enclosure (near the n park boundary ca. 1000 ft e of the jct. of Wildwood Ave. and Upper Park Rd.). 86 Comment
  SEINET10940052  Lupinus vallicola Lowell Ahart 1983-5-13 Ahart 3990 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET10490995  Lupinus vallicola subsp. vallicola A. Arthur Heller 1938-4-23 Heller 15046 Butte Plentiful on a grassy slope in the quercus douglasii belt near the bridge over The feather river on hwy 24 e of oroville. Upper sonoran life zone. 91 Comment
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  CHSC42709  Lycopus americanus Lowell Ahart 1987-6-9 5743 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC51222  Lycopus americanus Lowell Ahart 1984-8-19 4783 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 30 Comment
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  UCD103040  Lythrum hyssopifolia E. M. Johnston 1915-1 W- 134 J Butte Biggs. Comment
  UC1609282  Lythrum tribracteatum Lowell Ahart 1993-5-15 6938 Butte about 2 mi w of Biggs (on n side of Biggs Princeton Road); Biggs Princeton Road 30 Comment
  CHSC28490  Madia elegans subsp. densifolia M. S. Taylor 1979-8-4 2172 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC76036  Madia elegans subsp. elegans G. F. Hrusa; T. D. Wilfred 1996-7-9 13172 Butte Sierra Nevada. Plumas National Forest. At S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1100 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  SEINET3450908  Madia gracilis Unknown 2003-6-30 10323 A Butte Forbestown, Forbestown, about 2 miles air northwest, southeast side of Ponderosa Way, about 2.5 miles by road southwest of the Ponderosa Dam 570 Comment
  CAS-BOT-BC342961  Madia gracilis A. A. Heller 1914-8-6 11643 Butte About Chico Meadows 1219 Comment
  CHSC6010  Magnolia grandiflora M. MacArthur 1968-6-19 251 Butte Front Lawn Administration Building, Chico State College. 60 Comment
  SEINET10965685  Magnolia grandiflora Mary Susan Taylor 1974-5-20 Taylor 253 Butte Chico. Comment
  CHSC49662  Maianthemum racemosum Vernon Oswald 1985-6-6 1814 Butte Abandoned RR right of way 0.75 mi s of Doon Camp located on the Skyway e of Lovelock. 853 Comment
  CHSC46244  Maianthemum stellatum Pauleen Broyles 1986-7-5 991 Butte Near Scotts John Creek, ca 2 km n of the road jct below Humboldt Peak. 1860 Comment
  CAS-BOT-BC347383  Malacothrix floccifera Lowell Ahart 1984-7-19 4723 Butte Above the dirt road that is 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
  UC481093  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Butte Comment
  CDA42740  Marsilea T. C. Fuller 1958-4-15 4798 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC58864  Marsilea oligospora Lowell Ahart 1992-7-21 6793 Butte On the bottom of a snow lake, Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC30714  Marsilea vestita M. S. Taylor 1980-7-6 3051 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CHSC46959  Matricaria occidentalis Lowell Ahart 1977-4-29 1338 Butte Along the edge of a road, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC45287  Medicago minima Vernon Oswald 1987-4-6 2309 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. 80 Comment
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  CHSC951  Medicago sativa J. Rafferty 1931-6-5 Butte 1st St. near Broadway, Chico. 57 Comment
  CHSC88189  Melica aristata Lowell Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CHSC35664  Melica californica R. E. Preston 1982-4-22 252 Butte Ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi sw of Paradise. 289 Comment
  UC818852  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 mi below Centerville (on banks of Butte Creek, in the Sierra foothills); Sierra, Butte Creek 76 Comment
  SEINET10599355  Melica californica Prouty 1980-4-1 PROUTY 80 .20 Butte Among rocks near cliff overlooking Salmon Hole on Big Chico Creek. Upper Bidwell Park, ca. 5 mi NE of Chico. T22N R2E S3. 213 Comment
  CHSC49558  Melica fugax Vernon Oswald; Lowell Ahart 1987-5-14 2399 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. In forest on the w side of the creek. 1780 Comment
  CHSC60592  Melica geyeri Vernon H. Oswald; Lowell Ahart 1993-4-19 5282 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Along the lower part of the trail between the creek and the lookout. 719 Comment
  JEPS110219  Melica harfordii Lowell Ahart 2006-5-19 12638 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CAS-BOT-BC262455  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CHSC111962  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. 73 Comment
  CHSC3402  Melilotus indicus Alice L. Stoll 1966-5-7 158 Butte Bare Hole, Upper Bidwell Park, 7.4 miles from First and Main Streets. Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  SEINET10902774  Melissa officinalis Mary Susan Taylor 1979-10-13 Taylor 2252 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  SBBG127999  Mentha arvensis L. Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC42789  Mentha canadensis L. P. Janeway; Patty Costello 1987-9-5 2574 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  CHSC92047  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  UC203850  Mentzelia laevicaulis var. laevicaulis A. A. Heller 1914-8-13 11682 Butte 9 mi se Chico (Low volcanic hills, below the Quercus Douglasii belt.) Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC12118  Micropus californicus var. californicus M. F. Smith 1972-5-3 7 Butte 300 yds. southwest of intersection of Pentz Road and Paradise-Oroville Highway. 152 Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  POM33622B  Microseris C. C. Bruce 1897-06 1951 Butte Little Chico Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC11954  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville. By Butte Creek. 1500 Comment
  CHSC24988  Microsteris gracilis M. Coulon 1974-3-3 39 Butte Located along the w side of Cohasset Road approx. 10 miles n of Chico, near Seven Toed Petes Wildlife refuge. Comment
  HSC32606  Microsteris gracilis R. A. Vanbianchi 1974-4-20 235 Butte Table Mtn. 305 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  UC885736  Mimulus angustatus A. A. Heller 1915-4-12 11806 Butte near Cohasset; Sierra foothills Comment
  POM252817  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico. 244 Comment
  JEPS5590  Mimulus glaucescens R. F. Hoover 1938-4-24 3248 Butte 3 mi n Chico Comment
  UCD122721  Mimulus glaucescens Kirsten L. Tarp 1981-4-20 7 Butte Bidweel Park e of Chico, n of Chico municipal golf course. 97 Comment
  SEINET3079039 Image available Mimulus guttatus Marc Mittleman 1980-8-1 228 Butte Little Chico Creek, east side of China Garden Springs 262 Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  JEPS117136  Mimulus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 304 Comment
  SFV3383  Mimulus kelloggii M. L. Vincent 1961-3-26 20 Butte Sierra Nevada Near Feather River Bridge. Nelson Bar Road, two miles east of Pentz Road. Southeast of Paradise. 430 Comment
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC113404  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SEINET10570286  Mimulus torreyi Mary Susan Taylor 1979-10-5 Taylor 2235 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  RSA21489  Mimulus tricolor Carl B. Wolf 1937-5-14 8671 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  UCD122947  Mimulus tricolor L. Ahart 1978-5-1 1687 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  UC1125782  Minuartia californica J. E. Sowder 1935-6-10 601 Butte 6 mi se Durham; Chico Quadrangle Comment
  SEINET10965521  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2703 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC37122  Moehringia macrophylla L. Ahart 1982-9-13 3830 Butte On high bar that had been mined for gold along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 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
  CDA23932  Mollugo verticillata D. G. Kelch 2006-8-2 6 .341 Butte Along Butte Creek, north of Durham-Dayton Hwy. 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
  CHSC47450  Mollugo verticillata Lowell Ahart 1979-5-20 1880 Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET6645727  Mollugo verticillata R. R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCD99639  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte eastern outskirts of Oroville. 60 Comment
  SEINET8263327  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  JEPS110081  Monardella odoratissima subsp. glauca Lowell Ahart 2006-7-16 12960 Butte Near the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CHSC62561  Monardella odoratissima subsp. pallida B. Castro 1993-8-3 493 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca. 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  CHSC20679  Monardella sheltonii M. S. Taylor 1975-6-30 816 Butte On w side of Cohasset Hwy, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC97320  Monardella sheltonii L. P. Janeway 2007-6-26 9075 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CHSC67805  Monardella venosa James D. Jokerst; B. Castro 1992-5-19 3356 Butte Cascade Range Foothills. Powerline site in the unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 83 Comment
  SD130983  Monochoria vaginalis Lowell Ahart 1981-9-19 3193 Butte Butte County Rice Experiment Station 35 Comment
  CHSC114397  Monochoria vaginalis J. R. Deck; T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles north of Biggs, Butte County. 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
  UC83804  Montia chamissoi Mrs. R. M. Austin July 1896 266 Butte Colby Comment
  CHSC28633  Montia fontana subsp. chondrosperma M. S. Taylor 1979-3-31 1965 Butte In very wet ditch. Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  CHSC62157  Montia fontana subsp. chondrosperma B. Castro; L. P. Janeway, M. Meyer, P. Kelly 1987-3-26 51 Butte Ca 1 mi E of Chico on the S side of Humboldt Rd, near jcn with Bruce Rd, in an area with vernal pools and swales. 76 Comment
  SEINET10572663  Montia linearis Mary Susan Taylor 1981-5-6 Taylor 3624 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC23717  Montia parvifolia M. S. Taylor 1976-5-5 1114 Butte Abundant along creek, ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  CHSC57197  Montia parvifolia L. P. Janeway 1988-5-14 2767 Butte Steep bank along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. 922 Comment
  CHSC87533  Montia parvifolia R. D. Fischer 2004-4-20 134 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located adjacent to Big Chico Creek, at bottom of 10 Mile House Road. 198 Comment
  CHSC88641  Montia parvifolia Linnea Hanson 1996-5-15 363 Butte Plumas National Forest. Brush Creek Fire Station. 1066 Comment
  CHSC94977  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 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
  CAS-BOT-BC260529  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte About 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CAS-BOT-BC260540  Muhlenbergia filiformis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mountain region located ca 6 air miles SE of Jonesville 1996 Comment
  CHSC44457  Muhlenbergia filiformis Lowell Ahart 1988-6-29 6098 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  UC600755  Muhlenbergia filiformis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  SEINET10827782  Muhlenbergia filiformis Edwin B. Copel 1929-7-16 Copeland 339 Butte Jonesville. In open wet ground; the first grass to appear in such places. 1550 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  JEPS113276  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  UCD138156  Najas guadalupensis subsp. guadalupensis Verne Grant; Herbert L. Mason 1946-8-15 13047 Butte near caretaker's house, Greylodge Game Refuge. Comment
  SEINET12050272  Narthecium californicum L. Ahart, Ahart, P. 1984-1 4760 Butte about .5mi E of Bald Mt., about 5mi NE of Stirling City 1750 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC105810  Navarretia capillaris Lowell Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC25255  Navarretia divaricata M. S. Taylor 1977-6-26 1393 Butte On s side of Ponderosa Way, ca. 4 mi e of Cohasset. 548 Comment
  CHSC89480  Navarretia filicaulis Jenny Marr 1994-7-6 211 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  UC1228165  Navarretia heterandra Beecher Crampton 1960-6-15 5623 Butte 10 mi se Chico Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  HSC38283  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1976-5-9 2453 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC109731  Navarretia nigelliformis subsp. nigelliformis B. Castro 2006-5-25 1533 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  CHSC28162  Navarretia pubescens J. D. Jokerst 1979-5-28 225 Butte 1.6 mi S. of Waylan Rd (1.2 mi S of intersection of Waylan Rd and Neil Rd.). 350 Comment
  CHSC31827  Navarretia pubescens L. Ahart 1977-5-8 1362 Butte Peter Ahart Ranch, Honcut. In pasture fields. 50 Comment
  UC1008720  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  POM65213  Navarretia squarrosa A. A. Heller, H. E. Brown 1902-5-7 5477 Butte Berry Canyon (Near Clear Creek). Comment
  RSA715676  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  UC518029  Navarretia tagetina Lewis S. Rose 1933-5-27 33187 Butte Honcut 32 Comment
  SEINET260327 Image available Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road gutter to the generator at Ponderosa Reservoir ca 1 mi E of the Ponderosa Dam 457 Comment
  SEINET10497054  Nemophila heterophylla Mary Susan Taylor 1979-5-4 Taylor 1994 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
  CHSC90461  Nemophila pedunculata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11678 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 Comment
  UC67075  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) 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
  JEPS28172  Odontostomum hartwegii A. A. Heller 1938-5-22 1510 a Butte near airport n.e. of Chico Comment
  CHSC32360  Oreostemma alpigenum var. andersonii J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 852 Butte Chico Meadows in the community of Butte Meadows, ca 1.1 mi N of the jct. of Humboldt Rd and the Skyway along Scout Rd. 1341 Comment
  CHSC43597  Oreostemma alpigenum var. andersonii Vernon H. Oswald 1983-7-6 830 Butte Near Humboldt Rd. 3.4 mi NE of Butte Meadows. 1432 Comment
  CHSC27798  Orobanche fasciculata Lisa Sedlacek 1978-4-25 17 Butte Collected on Cohasset Rd. 4 mi n of Rock Creek Rd. and 1/2 mi e. 548 Comment
  RSA0081021  Orobanche fasciculata C. C. Bruce 1897-06 1912 Butte Unspecified. Comment
  JEPS95517  Orobanche uniflora Lowell Ahart 1994-4-22 7286 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10832401  Orthocarpus attenuatus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5386 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  RSA20870  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8331 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  SEINET10898078  Orthocarpus erianthus Mary Susan Taylor 1974-3-5 Taylor 73 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  SEINET12326961  Orthocarpus purpurascens R. E. Preston 1979-1 20 Butte 5.8 mi N of Oroville 366 Comment
  CHSC89745  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  UCSB36279  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte collected in a ditch between Service Road 33 and Service Road 34 at Lattermore portion of California Rice Experiment Station, between Briggs and Richvale Lattermore, Briggs and Richvale Comment
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC94539  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CAS-BOT-BC316896  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  JEPS109973  Packera eurycephala var. lewisrosei Dean W. Taylor 2004-6-17 19111 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CAS-BOT-BC317158  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  CHSC58289  Panicum capillare Lowell Ahart 1992-5-6 6749 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  JEPS88223  Panicum dichotomiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7755 Butte in US Fish & Wildlife parcel between 7 Mile Lane and Sacramento River, in NE corner of Tract 7.2, Sanctuary I Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC66462  Panicum dichotomiflorum subsp. dichotomiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7755 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CDA6402  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern Sierra Nevada Foothills; On the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. Comment
  CHSC84032  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  HSC92450  Parentucellia viscosa L. Ahart 1976-5-25 1128 Butte S side of Cox Lane, 1/10 mi. W of Palermo Honcut Hwy., 4 mi. N of Honcut, 10 mi. S of Oroville 34 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  UC1051427  Parvisedum pumilum Francia Chisaki with R. Bacigalupi and T. Robbins 1956-4-19 681 Butte 0.6 mi n of junction of Ord-Pentz-Magalia Road with Nelson Bar Road on the former road Nelson Bar Road Comment
  CDA34641  Paspalum dilatatum L. Ahart 2009-6-3 15969 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC102410  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC31621  Paspalum dilatatum L. Ahart 1977-9-20 1578 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  JEPS120835  Paspalum urvillei Lowell Ahart 2013-7-1 18822 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, 3.5 air miles SW of Forbestown. Comment
  SEINET10508285  Paspalum urvillei Mary Susan Taylor 1975-10-4 Taylor 952 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CAS-BOT-BC202815  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville 975 Comment
  CAS-BOT-BC202816  Paxistima myrsinites Lowell Ahart 1986-10-16 5402 Butte About 1 mile south-west of the Forbestown Diversion Dam, about 4 miles north-east of Forbestown 548 Comment
  RSA4166  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville. 1550 Comment
  UC1562399  Pellaea andromedifolia Lowell Ahart 1990-5-28 6503 Butte ca. 2 1/2 mi ne of East Gridley (s of Palm Ave, ca. 1/2 mi e of Larkin Rd) 30 Comment
  SBBG128079  Pellaea andromedifolia L. Ahart 2009-5-30 15781 Butte N of a broad open dainage in oak woodland, ca. 100 yards N of the dirt rd which is Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi W of Hwy 32, ca. 10 mi NE of Chico 269 Comment
  UC426893  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 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
  CHSC29023  Pellaea mucronata var. californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2432 Butte S side of Swedes Flat Rd, and e side of Rocky Honcut Creek, ca. 2 mi e of Oroville Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  NY591792  Penstemon deustus var. pedicellatus A. A. Heller 1915-6-16 12023 Butte Summit of the Sierra Nevada above Jonesville 2133.6 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  CHSC31448  Penstemon laetus var. leptosepalus L. Ahart 1980-9-10 2641 Butte Along the edge of the rd, ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC37781  Penstemon laetus var. leptosepalus M. S. Taylor 1982-6-24 4729 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  UC726288  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 mi from Oroville; embankment on Feather Highway Comment
  UC426949  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 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
  CAS-BOT-BC239448  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  CAS-BOT-BC239451  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  UC102996  Penstemon rydbergii var. oreocharis Mrs. R. M. Austin 1899-7-1 232 Butte Colby Comment
  CAS-BOT-BC77131  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 4105 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC34242  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-7 3629 A Butte N side of Ponderosa Way, 0.6 mi n of Ponderosa Dam, ca. 4 air mi sw of Feather Falls. 365 Comment
  CAS-BOT-BC77080  Pentagramma triangularis subsp. triangularis John Thomas Howell 1959-9-26 35091 Butte Sierra Nevada - Pulga Bridge, N. Fk. Feather River 411 Comment
  CAS-BOT-BC77081  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-26 2063 Butte Near Hurleton. 600 Comment
  JEPS120170  Pentagramma triangularis subsp. triangularis Lowell Ahart 2012-6-2 18136 Butte About 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  UC399576  Pentagramma triangularis subsp. triangularis Mrs. R. M. Austin May 1896 186 Butte Iron Canyon Comment
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CHSC37275  Perideridia lemmonii L. Ahart 1982-8-19 3744 Butte Along sides of North Honcut Creek, in a protected shady place, Peter Ahart Ranch, ca. 1 mile n and 3 mi e of Honcut. 50 Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CDA38503  Perideridia parishii T. C. Fuller 1962-7-12 9194 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC40241  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1898 Butte Philbrook Rd. ca. 0.1 mi e of Humbug Rd. at the road leading to W. Branch Camp. 1463 Comment
  CHSC84030  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte In a ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road, about 1 1/2 miles (air) southwest of Richvale. 28 Comment
  CHSC45466  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte On the sides of a deep wash, about 1/4 mile south-east of Stirling City. 1097 Comment
  CHSC73980  Persicaria hydropiper B. Castro 1995-9-10 612 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  JEPS120035  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC38691  Persicaria maculosa Vernon Oswald 1983-5-8 452 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC36531  Persicaria punctata L. Ahart; J. T. Howell 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 m in and 3 mi e of Honcut. 50 Comment
  JEPS120009  Petrorhagia dubia Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  JEPS26746  Phacelia corymbosa P. C. Hutchison 1961-6-9 2102 Butte at Pulga Bridge canyon of the north fork of the Feather River (on hwy US Alt. 40 and side road to Pulga) Comment
  RSA32014  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On the Feather River Highway, 23 miles from Oroville. Comment
  CHSC71118  Phacelia egena Jan Monelo 1989-4-11 9 Butte Ca 75 yds w of Covered Bridge on w side of Honey Run Rd, ca 7 mi e of Chico. 121 Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC1299148  Phacelia egena Freed W. Hoffman 1951-3-19 3857 Butte lava cap bluff 16.3 mi from Chico (on road from Chico to Pentz) Comment
  UC1609370  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC103721  Phalaris paradoxa Lowell Ahart 2010-5-14 16661 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC6142  Phalaris paradoxa E. Parreno 1968-4-26 73 Butte Roadside of Humboldt Ave. leading to Stilson Canyon just a little beyond Chico Meat Co. Abbattoir., Chico. 59 Comment
  SEINET11689144  Phalaris paradoxa Unknown 1980-1 s.n. Butte Chico Game Fish Farm 0.2 mi E of Hwy 99, 1 mi N of Hwy 149 Comment
  CAS-BOT-BC77373  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico; about 50 miles to the south, probably along the Bear River Comment
  RSA0057768  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico. Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC60583  Phlox speciosa subsp. occidentalis Vernon H. Oswald; Lowell Ahart 1993-4-19 5283 Butte Rattlesnake Creek Trail on outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  SEINET12230317  Phoradendron bolleanum M. S. Taylor 1975-1 918 Butte 1/2 mi N of Magalia, 50 ft. E of the Skyway 610 Comment
  CAS-BOT-BC135096  Phoradendron juniperinum Joseph P. Tracy 1932-7-16 10648 Butte Trinity Summit, open places at Corral Prairie 1584 Comment
  LA209828  Phoradendron juniperinum E. B. Copeland; 1931-7-28 627 Butte Jonesville 1500.0 Comment
  SEINET12230295  Phoradendron juniperinum M. S. Taylor 1976-1 997 Butte abundant in Yellow Pine Forest, 2 mi N of Cohasset, 10 ft E of Cohasset Hwy 762 Comment
  CHSC85445  Phoradendron libocedri R. D. Fischer; Jenny Marr 2003-11-23 15 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  JEPS115723  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC32113  Phoradendron serotinum subsp. macrophyllum L. Ahart 1977-3-19 1227 Butte Along edge of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CHSC86067  Phoradendron villosum R. D. Fischer 2004-1-4 37 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. East side of Upper Park Road, just northeast of Day Camp next to rd. 121 Comment
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  SEINET10492851  Phoradendron villosum Mary Susan Taylor 1979-10-13 Taylor 2256 Butte T22N R4E sw 1/4 sec 21. Yellow Pine Forest and Foothill Woodland transition zone on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.0 mi N of its jct with Concow Road, ca. 3 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC59478  Phyllostachys bambusoides Bryan C. Willingham 1968-12-12 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  RSA726339  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte North strand of a reservoir, about 2.25 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UCD113673  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca. 1.1 mi S of Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide with large boulders. 585 Comment
  CAS-BOT-BC434418  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte Along the road (La Porte Road) about 4 miles north-east of Bangor 304 Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42140  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Along the sides of Kunkle Creek, about 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 548 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
  CHSC27921  Pinus jeffreyi M. S. Taylor 1978-7-18 1706 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  RSA572044  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC69117  Piperia unalascensis Lowell Ahart 1997-8-1 7778 Butte Near some small streamlets of Little Kimshew Creek, in Smow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC398905  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529829  Pityrogramma triangularis Mary Susan Taylor 1980-7-20 Taylor 3190 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  UC725374  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte near Chico airpost 91 Comment
  UC480699  Plagiobothrys canescens H. F. Copeland 1923-3-16 602 Butte near Butte Creek Comment
  UC726654  Plagiobothrys fulvus A. A. Heller 1938-4-23 15044 Butte on Feather River Hwy 1 1/2 mi from Oroville Comment
  CHSC29035  Plagiobothrys fulvus var. campestris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 546 Butte Table Mountain, 100 mets. N. of intersection of Cherokee Rd. and E. edge of section 12. Comment
  CHSC35325  Plagiobothrys fulvus var. campestris M. S. Taylor; K. Tharp 1982-4-8 4281 Butte SE corner of jct of Hys 149 and 99, ca. 10 mi s of Chico. 68 Comment
  CHSC44479  Plagiobothrys glyptocarpus Lowell Ahart 1988-5-12 5994 Butte On the bottom of a small wash, in a mined over area, 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
  CDA34720  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  CHSC93349  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  JEPS117195  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC26801  Plagiobothrys greenei M. S. Taylor 1978-4-14 1567 Butte In vernal pools, on e side of Williams Rd. ca. 1/4 mi n of Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  CAS-BOT-BC228251  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  CHSC42514  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC46768  Plagiobothrys shastensis Lowell Ahart 1979-5-20 1877 Butte Along the edge of a large wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC29269  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-15 3366 Butte Richvale vernal pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46773  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-4-27 1670 Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS115845  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
  CHSC33702  Plantago bigelovii L. Ahart 1981-4-6 2745 Butte A little SE of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi swof Gridley. 35 Comment
  SEINET12326968  Plantago bigelovii Unknown 1977-1 18 Butte ca 75 m NW of Cherokee Rd, North Table Mountain, 7 km N of Oroville 366 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC25538  Plantago coronopus Robert A. Schlisng 1974-4-24 3121 Butte Northernmost part of the county, near jct Hwy 99 and Broyles Road. Comment
  JEPS119791  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS22686  Plantago elongata Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-25 6324 -A Butte 1.25 mi s Wicks Corner (along road from Chico to Oroville) 94 Comment
  CHSC3962  Plantago erecta E. P. Parreno 1967-3-8 26 Butte Cohasset Road in front of Municipal Airport. Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  CHSC83915  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  RSA754583  Plantago erecta L. Ahart 2009-4-22 15584 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
  HSC73114  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd. on ridge, .5 mi. S of its junction with Ponderosa Way, 2 mi. N of Lake Concow, 20 air mi. NE of Oroville 854 Comment
  SEINET10499848  Plantago erecta Lowell Ahart 1983-4-10 Ahart 3921 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC19917  Plantago lanceolata M. S. Taylor 1975-3-3 395 Butte Abundant on e side of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd., ca. 6 mi n of Chico. 182 Comment
  CHSC31779  Plantago lanceolata L. Ahart 1973-6-28 256 Butte Peter Ahart Ranch, Honcut. On dry sand near a creek. 45 Comment
  CAS-BOT-BC93160  Platanus racemosa John Thomas Howell 1975-6-15 51067 Butte Butte Creek near Chico. 60 Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  CHSC103113  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
  CHSC87551  Plectritis ciliosa subsp. ciliosa R. D. Fischer 2004-4-7 74 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near end of 10 Mile House Road in mdw. 200 ft south of gated end of park road. 228 Comment
  JEPS127607  Plectritis congesta subsp. brachystemon L. P. Janeway 2015-4-21 11666 Butte Plumas National Forest; SW side of Old Forbestown Road, 0.8 road km N of Forbestown Road and New York Flat Road. Comment
  CHSC32587  Plectritis macrocera J. D. Jokerst; Jeri Donovan 1981-3-21 1261 Butte Ca. 0.5 mi N of Horseshoe Lake (3 mi E of Chico in Bidwell Park). Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  JEPS117148  Plectritis macrocera Lowell Ahart 2010-4-30 16596 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
  POM181674  Plectritis macrocera subsp. macrocera Williams 1927-4-11 s.n. Butte Near Chico Comment
  CHSC86140  Pleuricospora fimbriolata John Dittes 2002-6-29 628 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  UC426929  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CHSC100964  Poa annua Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10593443  Poa annua Lowell Ahart 1973-2-21 Ahart 154 Butte Dry soil, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CHSC113965  Poa bolanderi Lowell Ahart 2014-7-10 19628 Butte Meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA718083  Poa bolanderi L. Ahart 2006-7-16 12972 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10508290  Poa bolanderi Lowell Ahart 1985-7-16 Ahart 5147 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1829 Comment
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  CHSC31931  Poa pringlei J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1034 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  RSA21174  Poa secunda C. B. Wolf 1937-5-14 8666 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CHSC38848  Poa secunda subsp. secunda Vernon Oswald 1983-3-26 207 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 365 Comment
  CHSC44591  Poa secunda subsp. secunda Lowell Ahart 1979-5-7 1858 Butte Along edges of wash, east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC8603  Poa secunda subsp. secunda M. Banning 1969-3-22 20 Butte S. edge of Chico Golf Course. 70 Comment
  UCD91621  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  SEINET13947030 Image available Pogogyne zizyphoroides A. A. Heller 1927-1 14345 Butte 9 mi N of Chico in the region where Hartweg got the type Comment
  CHSC46584  Polemonium occidentale V. Oswald; L. Ahart 1989-7-21 3871 Butte Near the junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the west border of the meadow near Humboldt Rd. 1490 Comment
  CHSC42738  Polycarpon tetraphyllum Lowell Ahart 1987-4-30 5485 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SEINET10537769  Polygonum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5153 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS88567  Polygonum amphibium var. emersum Vernon H. Oswald and Lowell Ahart 1996-5-27 7672 Butte U.S. Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (in a ditch between 7 Mile Lane and Tract 6, Sanctuary 2, just n of the equipment parking lot); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET10871692  Polygonum aviculare Mary Susan Taylor 1978-7-21 Taylor 1793 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CAS-BOT-BC414192  Polygonum aviculare subsp. depressum Lowell Ahart 1987-9-24 5893 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-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC41260  Polygonum bistortoides S. C. Morey 1983-7-21 480 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA781349  Polygonum bolanderi Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 148 Butte Humboldt road. Comment
  CAS-BOT-BC414369  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  UC466040  Polygonum californicum Mrs. R. M. Austin May 1883 14 Butte mesa near Chico Comment
  UCR66556  Polygonum davisiae H. F. Copeland 1928-8-29 0345 Butte Northern Sierra Nevada Mtns., neighborhood of Jonesville, summit of Humboldt Road 2134 Comment
  CHSC31167  Polygonum douglasii subsp. douglasii M. S. Taylor 1978-9-9 1916 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  NY323770  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 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
  CHSC105516  Polygonum minimum Lowell Ahart 2010-9-28 17267 Butte On damp dark soil, along the east 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
  CHSC33948  Polygonum minimum M. S. Taylor; L. Ahart 1981-8-16 4209 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  CHSC39131  Polygonum minimum R. A. Schlising; R. Banchero 1980-7-14 3904 Butte N end of county, N of Snag Lake. 1731 Comment
  CHSC58946  Polygonum minimum Lowell Ahart 1992-7-29 6874 Butte On rocky slopes, about 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC44419  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte Small meadows or openings in pines, north of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  UC466037  Polygonum sawatchense subsp. sawatchense Mrs. R. M. Austin Apr. 1896 148 Butte grain fields Comment
  CAS-BOT-BC109252  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  POM22456  Polypodium californicum E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  JEPS113227  Polypodium calirhiza Lowell Ahart 2007-5-16 13892 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel.1 480 Comment
  CAS-BOT-BC232962  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC233057  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC42450  Polypogon interruptus Lowell Ahart 1987-5-27 5699 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
  SEINET11665625  Polypogon interruptus Unknown 1977-1 1365 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC233211  Polypogon maritimus Lowell Ahart 1983-10-15 3888 Butte North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC31722  Polypogon maritimus L. Ahart 1975-6-23 806 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37828  Polystichum imbricans R. A. Schlising 1980-6-10 3679 Butte NW part of county along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1341 Comment
  SEINET10530117  Polystichum imbricans Mary Susan Taylor 1979-9-28 Taylor 2202 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC72296  Polystichum imbricans subsp. imbricans John Thomas Howell; Gordon H. True 1967-6-11 42566 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  SEINET10965500  Portulaca oleracea Mary Susan Taylor 1977-10-10 Taylor 1506 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  UC478558  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC49685  Potamogeton crispus Vernon Oswald 1987-8-2 3173 Butte Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  UCD169275  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC80920  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC34127  Potamogeton natans L. Ahart 1981-9-21 3198 Butte Along French Creek, ca. 100 m w of where the road crosses French Creek, ca. 1 mi w of the Sly Creek Reservoir. In a pond above the swamp. 1300 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  SEINET4536410 Image available Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-1 604 Butte Jonesville 1650 Comment
  CHSC45741  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-13 2208 Butte Along Dogwood Cr; rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CHSC48862  Potentilla gracilis var. fastigiata Vernon Oswald 1983-7-6 820 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Meadow. 1325 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC508632  Prosartes hookeri Lowell Ahart 1982-9-13 3810 Butte Near Pinkard Creek about 1/8 mile north of the Lost Creek Res. Dam about 2 and 1/8 miles north-west of Straberry Valley 1100 Comment
  CHSC64044  Prunella vulgaris var. lanceolata S. C. Morey 1983-8-4 715 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC101815  Prunella vulgaris var. vulgaris Lowell Ahart 2009-6-12 15839 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  UCD113182  Prunus emarginata H. F. Copeland 1929-6-10 s.n. Butte Jonesville. 1524 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  POM89316  Prunus subcordata C. C. Bruce 1897-05 1813 Butte Butte Creek. Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC113980  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CAS-BOT-BC357238  Pseudognaphalium microcephalum J. D. Jokerst 1979-10-5 0364 Butte Along edge of Hwy 70. Hwy 70 at intersection with Bear Ranch Cr., ca. 3/4 mi. S. of Arch Rock Tunnel 548 Comment
  RSA4440  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC27794  Psilocarphus brevissimus var. brevissimus K. Bridwell 1978-4-18 97 Butte Ditch along roadside of Broyles Rd, ca. 0.25 mi w of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico. 76 Comment
  CHSC34411  Psilocarphus brevissimus var. brevissimus R. M. Winchell 1980-4-23 1 Butte N of Chico, between Singer Creek and Cana-Pina Creek Road. Comment
  JEPS117188  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CAS-BOT-BC361739  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CAS-BOT-BC361826  Psilocarphus oregonus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC113508  Psilocarphus tenellus Lowell Ahart 2014-7-10 19625 -A. Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC38348  Psilocarphus tenellus var. tenellus Vernon Oswald 1983-4-25 379 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Near a jeep trail. 359 Comment
  SEINET10906976  Psoralea macrostachya Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1394 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  CAS-BOT-BC72549  Pteridium aquilinum Lowell Ahart 1983-9-21 4463 Butte along French Creek, about 3 miles north of the Sky Creek Dam, north of Strawberry Valley 900 Comment
  CHSC34152  Pteridium aquilinum var. pubescens L. Ahart 1981-9-15 3163 Butte N of Pinkard Creek, ca. 1 1/4 mi n of Lost Creek Reservoir, ca. 1 1/4 mi w of Sly Creek Reservoir. 396 Comment
  SEINET10454558  Pteryxia terebinthina var. californica Mary Susan Taylor 1979-7-21 Taylor 2160 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC20726  Pycnanthemum californicum M. S. Taylor 1975-8-31 888 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC20527  Pyracantha koidzumii Pamela Caldwell 1971-10-8 Butte CSUC campus. Bordering front lawn of Administration Bldg. 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
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  CAS-BOT-BC462603  Pyrola dentata A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  UC127749  Pyrola picta Miss Kate Conger Butte Brush Creek Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CHSC109595  Pyrus communis Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CHSC31720  Quercus L. Ahart 1976-1-9 996 Butte Near North Honcut Creek, ca. 5 of 6 small trees, s ca. 1/2 mi is a very large tree which is ca. 50 ft tall. Ca. 2.5 mi n and 3 mi e of Honcut. 53 Comment
  CAS-BOT-BC94694  Quercus X howellii John Thomas Howell 1955-6-15 30493 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC82626  Quercus berberidifolia Tara Morgan 2002-4-23 32 Butte Along the south rim trail walking down from green gate off of Highway 32 towards the upper end of Upper Bidwell Park. 424 Comment
  UCD45257  Quercus berberidifolia A. E. Wieslander 1927-6-29 s.n. Butte Near Fourteen-mile House, Humboldt road from Chico. Comment
  UCD80340  Quercus berberidifolia CNPS SN Foothill Team 2005-5-26 SNNR 0203 a Butte City of Chico, Upper Bidwell Park, near the intersection of 10 Mile House Road and Guardian Trail. 427 Comment
  CAS-BOT-BC62798  Quercus garryana John Thomas Howell 1955-6-15 30500 Butte 6 miles form Paradise on road to Pentz 426 Comment
  UC1135615  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-26 93 Butte 1.5 mi nw Nelson's Bar; Chico Quad. 502 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  UCD170421  Quercus kelloggii D. O. Burge 2017-3-18 2228 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  SEINET13953539 Image available Quercus lobata A. A. Heller 1915-1 11791 Butte Low flat land in the Sacramento valley near Durham. A tree found only in rich deep soil in valleys, and in this region never found above 225 feet elevation. 68 Comment
  UCD170590  Quercus vacciniifolia D. O. Burge; V. Church 2017-9-3 2293 Butte Philbrook Reservior. 1635 Comment
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  CDA19813  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  JEPS119727  Quercus wislizeni var. wislizeni Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, southwest of parking area, Lower Bidwell Park, Chico. Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC4566  Ranunculus aquatilis var. capillaceus C. Glascock 1965-1-27 202 Butte In water. Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CAS-BOT-BC378987  Ranunculus arvensis L. L. Heinrichs 1970-5-9 s.n. Butte Biggs, East Biggs Rd., roadside in ditch E of canal Comment
  SEINET7083219  Ranunculus canus L. Ahart 2003-5-28 10228 Butte Edges of a large vernal pool 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence west of Cherokee Road, North Table Mountain. About 7 miles north of Oroville. 39? deg. 35' 3.5" North Latitude; 121? deg. 35' 7.3" West Longitude. EX MWI. Comment
  SEINET10535966  Ranunculus canus Mary Susan Taylor Taylor 989 Butte Bidwell Park, Chico. Comment
  POM99252  Ranunculus hebecarpus C. C. Bruce 1897-05 1889 Butte Iron Canyon Comment
  SEINET10866503  Ranunculus hebecarpus Mary Susan Taylor 1981-4-5 Taylor 3492 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8739  Ranunculus muricatus S. Chulasmai 1966-4-15 5 Butte Stream bank (Keefer Rd). Comment
  CHSC90640  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
  CHSC52794  Ranunculus occidentalis M. S. Taylor 1979-3-31 1963 Butte Lickey Property, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  SEINET10535982  Ranunculus occidentalis var. eisenii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4155 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  CHSC46850  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 259 Butte S part of county, sw of Bangor, on Bangor Park Rd., roadside. 103 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  UC1586583  Ranunculus repens Vernon H. Oswald and Lowell Ahart 1991-6-5 4655 Butte e Hwy 32 (n of Carpenter Ridge Rd, between Forest Ranch and Lomo); West Branch of Butte Creek, Ewalt Camp 914 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
  UC203587  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 mi n of Oroville Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59879  Rhamnus ilicifolia Paul Leskinen 1972-4-16 785 Butte NE. fork of Wofford. 1219 Comment
  SEINET10493675  Rhamnus ilicifolia Mary Susan Taylor 1979-10-13 Taylor 2259 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC83010  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte Meadow, 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 753 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  JEPS113701  Rhynchospora capitellata Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  JEPS87159  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SFV1603  Ribes bracteosum M. L. Vincent 1962-4-15 184 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SEINET5569898  Ribes californicum H. S. Gentry, S. Koch 1962-1 19763 Butte Cohasset. 914 Comment
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Jul 22 2018
  CHSC62113  Ribes roezlii B. Castro 1987-5-21 118 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Alatina Drive. At edge of dense thicket in bed of ephemeral stream between two S-trending ridges. 463 Comment
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  UC436294  Ribes viscosissimum E. B. Copeland July, 1930 Butte above Jonesville 1950 Comment
  CHSC50102  Rigiopappus leptocladus Vernon Oswald 1990-4-24 4168 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, east side of Nelson Bar Rd just south of the spur road to Lime Saddle Powerhouse. 280 Comment
  CAS-BOT-BC74454  Rorippa curvisiliqua Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC74461  Rorippa curvisiliqua Lowell Ahart 1985-4-21 4878 Butte Along the sides of Wyandotte Creek south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CAS-BOT-BC74473  Rorippa curvisiliqua F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  JEPS114454  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  CAS-BOT-BC148123  Rosa gymnocarpa C. R. Quick 1942-8-5 42 -45 Butte Big Bar Mt. east of Pulga Comment
  CAS-BOT-BC148254  Rosa woodsii var. ultramontana Clarence R. Quick 1952-6-29 52 -88 Butte Near spring, 0.3 mile west of Coyote Gap on Mill Creek Road - Sierra Nevada Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC112600  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  JEPS122261  Rotala ramosior Lowell Ahart 2014-9-23 19866 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
  UC1586509  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1991-8-28 4849 Butte 3.5 mi nw of Biggs (Rice Experimeent Station on s side of Highway 162); Rice Experimeent Station, Highway 162 30 Comment
  CHSC20552  Rubus armeniacus M. S. Taylor 1975-5-24 771 Butte Lower Bidwell Park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. Comment
  JEPS127015  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC42006  Rubus laciniatus Lowell Ahart 1975-9-4 976 Butte Along a dirt road, about 2 miles north of Feather Falls. 548 Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  CHSC98949  Rumex acetosella Lowell Ahart 2008-5-8 14726 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  JEPS120829  Rumex acetosella Lowell Ahart 2013-7-9 18835 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  SEINET10937657  Rumex acetosella Mary Susan Taylor 1975-4-26 Taylor 526 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
  JEPS120853  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  JEPS124339  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC44420  Rumex salicifolius var. denticulatus Lowell Ahart 1988-6-28 6081 Butte On dry gravel bars along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2-1/2 miles east of Honcut. 39 Comment
  JEPS87136  Rumex salicifolius var. denticulatus Lowell Ahart 1992-5-9 6768 Butte about 2 (air) mi n Oroville (e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  JEPS114700  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte on the bottom of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  CHSC106864  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC35029  Sagina apetala R. A. Schlising 1981-4-6 4017 Butte SW of Oroville along Hwy 70, 0.8 mi N of jct with Cox Lane. Comment
  CHSC40787  Sagina apetala Lowell Ahart 1985-3-4 4842 Butte Along the edge of the curb, at the Palermo Post Office, Palermo. 40 Comment
  JEPS94145  Sagina apetala Lowell Ahart 1998-6-9 8003 Butte ca. 7 mi. (air) n. Oroville (ca. 5/8 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., in tracks of dirt rd., North Table Mt.); North Table Mt. 396 Comment
  CHSC36073  Sagina procumbens R. A. Schlising 1982-5-29 4228 Butte Chico; State University campus on n side of Library. Comment
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  CHSC43288  Sagittaria sanfordii Lowell Ahart 1987-10-22 5920 Butte In Madrone Lake, near the Oroville-Quincy Highway. 609 Comment
  UCD110731  Salix alba M. Wiesendanger 1928-6-1 1339 Butte Introduction Station, Chico. Comment
  JEPS119529  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  JEPS119596  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  JEPS119571  Salix lasiolepis Lowell Ahart 2012-2-22 17749 Butte On the east side of South Rim Trail, at the old homestead, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  CAS-BOT-BC129622  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36776 Butte West Branch of North Fork Feather River near Jarbo Gap - Sierra Nevada Comment
  CAS-BOT-BC124574  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  SD130407  Salix lemmonii John Thomas Howell 1967-5-9 42240 Butte Canyonside on northwest side of Feather River near Pulga Bridge Comment
  UC446427  Salix lemmonii E. B. Copeland 1931-6-11 Butte Kirby's <Beadow> 1800 Comment
  POM166819  Salix melanopsis E. B. Copeland 1903-7-27 3491 Butte Chico. Butte Creek. Comment
  SBBG28807  Salix scouleriana E. B. Copeland 1931-7-30 Butte Jonesville 1550 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  CAS-BOT-BC238617  Sambucus nigra subsp. caerulea Lowell Ahart 1968-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  UC426975  Sambucus racemosa var. microbotrys E. B. Copeland 1930-7-12 480 Butte above Jonesville (n brow of high ridge) 2100 Comment
  POM82754  Sanicula bipinnatifida C. C. Bruce 1897-05 2052 Butte Little Chico Comment
  SEINET10537480  Saponaria officinalis Mary Susan Taylor Taylor 320 Butte 61 Comment
  CHSC48680  Sarcodes sanguinea Vernon Oswald 1984-6-11 1285 Butte Humboldt Road, 0.8 mi E of Cherry Hill Campground. 1524 Comment
  CHSC59325  Satureja douglasii L. P. Janeway; B. Castro 1992-4-17 4153 Butte About 300 ft south of Galen Road and ca 400 ft west of Bald Rock Road; ca 1 1/2 mi south of Brush Creek. 987 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  RSA715723  Saxifraga integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10483045  Saxifraga nidifica Lowell Ahart 1983-2-21 Ahart 3902 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 35 m. 35 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  UCD49964  Schoenoplectus mucronatus S. Galen Smith; Malcolm A. Nobs 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland, Butte County. Comment
  SEINET10502775  Scirpus Mary Susan Taylor 1980-6-7 Taylor 2790 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  UC683297  Scirpus californicus Alan A. Beetle 1941-6-27 2739 Butte Rte 99E 4 mi n Richvale (along roadside); n of Richvale Comment
  CHSC56806  Scirpus diffusus L. P. Janeway 1988-7-29 3130 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  UC1100919  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house; Butte Sink, Greylodge Game Refuge Comment
  UC1100920  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge Comment
  CAS-BOT-BC110890  Scirpus microcarpus Lowell Ahart 1981-9-15 3173 Butte Along French Creek 1300 Comment
  JEPS104047  Scirpus setaceus Lowell Ahart 2003-6-30 10337 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CHSC34801  Scleranthus annuus subsp. annuus M. S. Taylor 1980-4-18 2520 Butte E side of Humbug Rd, ca. 2 mi ne of Centerville. On bluff. 487 Comment
  CHSC6093  Scribneria bolanderi A. R. Jaegel 1968-4-10 101 Butte W side of Cherokee Rd. and 1 mi s of Oregon City Rd. Comment
  CHSC78151  Scutellaria californica Lowell Ahart 2000-5-31 8412 Butte On a steep grassy tree covered slope, east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 304 Comment
  CHSC86142  Scutellaria californica John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Falls Overlook. South-facing slope below FS access road, ca. 3,000 feet north of Fall River. 1036 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  CHSC28750  Scutellaria tuberosa J. D. Jokerst; M. Hayes 1978-4-7 106 Butte Lime Saddle Marina (east of Pentz-Magalia Hwy.) 152 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 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-BC416977  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile NE of Highway 99 & Pentz Road 65 Comment
  CHSC75267  Sedella pumila Jennifer Slater 1997-4-6 6 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  JEPS107760  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  CAS-BOT-BC415023  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  SEINET8552582  Sedum B. Nightingale 1961-4-29 s.n. Butte Butte Creek, ca 10 miles E of Chico. 61 Comment
  CHSC8629  Selaginella hansenii L. V. Ritter 1969-3-14 75 Butte Ca 200 yds. E of e boundary of Upper Bidwell Park, 25 yds. n of Chico Creek. Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  CHSC87779  Senecio aronicoides Paul Maslin 2004-5-6 31 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  SD5874  Senecio cymbalarioides E. B. Copeland 1930-6-27 Butte Jonesville. In wet meadows, among sedges and grasses. 1550 Comment
  CDA13874  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-5-7 13732 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CHSC113470  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CHSC78125  Senecio vulgaris Lowell Ahart 2000-6-5 8449 Butte On the bottom of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  JEPS115244  Senecio vulgaris Lowell Ahart 2009-4-3 15523 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  JEPS117311  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  POM193377  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC84868  Sidalcea asprella L. P. Janeway 2003-5-24 7797 Butte Northern Sierra Nevada Foothills. Along OroDam Blvd. 585 m southwest of the base of Oroville Dam. 137 Comment
  CHSC13730  Sidalcea calycosa J. G. Moore 1970-5-27 153 Butte Honey Run Rd., 2 mi. w of Paradise. Comment
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  SEINET11991650  Sidalcea calycosa Unknown 1974-1 5 Butte on S side of Hwy 32, ca 1 mi E of intersection with Hwy 99, Chico 76 Comment
  CHSC1042  Sidalcea diploscypha T. Morgue 1932-5-6 Butte Plains north of Chico. 76 Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  CHSC91991  Sidalcea gigantea L. P. Janeway 2005-9-4 8532 Butte Northern High Sierra Nevada. Between Road 24N13 and a north-eastern tributary to upper Lockerman Creek; about 1.3 km south of Logue Meadows. 1329 Comment
  CHSC44965  Sidalcea hartwegii Cathy Young 1988-4-24 12 Butte Ca. 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  SJSU8457  Sidalcea hartwegii J. B. Willis Jr. 1969-5-3 87 Butte by State Rte 70, 7 mi S of Oroville Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  UCD14326  Sidalcea hartwegii Bif Sopez 1983-5-15 7 Butte Butte Co., 200 ft. north of Welch-Polermo Road on Highway 70; 91 Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  UCD116578  Sidalcea hirsuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
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May 22 2007
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 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. 259 Comment
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA477840  Silene californica M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  HSC38052  Silene gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2458 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC46352  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  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
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  SEINET11931357  Silene lemmonii Unknown 1977-1 14 Butte 3 km SW of Butte-Plumas co. line, 22 km NW of Paradise 490 Comment
  CHSC108990  Sisymbrium officinale Lowell Ahart 2012-4-30 17933 Butte On the sides of Bloody Pin Trail, about 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 317 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
  SEINET10938455  Sisyrinchium bellum Mary Susan Taylor 1975-4-26 Taylor 508 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
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10469849  Smilax californica Mary Susan Taylor 1975-6-25 Taylor 805 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 Comment
  NY759878  Solanum nigrum L. Ahart 1986-11-9 5440 Butte About 1/10 mile south of the clay burrow for Oroville Dam, ¼ mile east of Larkin Road, about 6 miles south-west of Oroville 37 Comment
  CHSC45723  Solanum parishii Cathy Young 1988-4-24 17 Butte Ca. 5.5 mi ne of Chico and 50 yds se of Highway 32. 256 Comment
  CHSC87448  Solanum parishii R. D. Fischer 2004-3-29 82 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along northern end of Humboldt Trail. 429 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  UC1999867  Solidago elongata J. C. Semple, S. Heard 1986-8-14 8432 Butte Jonesville, banks of Butte Creek, by road to Butte Meadows. Comment
  CAS-BOT-BC364942  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CHSC44900  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  JEPS115371  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 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
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  CHSC108763  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 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
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  RSA0116394  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  CAS-BOT-BC147949  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  HSC104002  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  SD8399  Spiraea douglasii Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC149708  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back/east of Jonesville 2133 Comment
  SEINET3163884  Spraguea umbellata K. Conger 1907-1 sn Butte Brush Creek Comment
  CHSC70805  Stachys pycnantha H. Durio 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 USFS Rd 22N84. 914 Comment
  UCD80122  Stebbinsoseris heterocarpa CNPS SN Foothill Team 2005-3-29 SNFN 0068 b Butte CDFG North Table Mountain Wildlife Area, along western border of North Table Mountain Ecological Reserve, outside of Oroville, CA. Plot is ca. 1 mile southwest of parking area, on west-southwest-facing slope approaching 'hollow' area. 362 Comment
  CAS-BOT-BC175315  Stellaria borealis subsp. sitchana R. A. Schlising 1982-6-16 4294 Butte E side of county, ne of Oroville and Brush Creek off Oroville-Quincy Road; Rogers Cow Camp site 1219 Comment
  CHSC45266  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. On the bed of the creek. 1889 Comment
  UC1609008  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  CHSC26854  Stellaria longipes var. longipes M. S. Taylor; M. Hayes 1978-6-24 1655 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its juct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC46556  Stellaria longipes var. longipes Vernon H. Oswald 1989-7-15 3858 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along a drainage on the sw corner of the meadow. 1767 Comment
  CHSC19936  Stellaria media M. S. Taylor 1975-3-25 426 Butte Field between 11th and 12th Sts at end of Citrus Ave, Chico. 45 Comment
  CDA42852  Stellaria pallida L. Ahart 2012-4-3 17943 Butte On large rocks, on the north side of Bloody Pin Trail, west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC46827  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-16 4606 Butte N part of county, S of Humbug Summit, at upper reaches of Willow Creek; meadow edge. 1950 Comment
  CHSC84403  Stephanomeria paniculata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 Comment
  CHSC109681  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC93522  Streptanthus diversifolius L. P. Janeway 2006-4-23 8557 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Low southeast-facing slope of exposed blocky basalt. 393 Comment
  CAS-BOT-BC123671  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte Paradise East. ca. 0.8 km N of Robley Point 938 Comment
  CHSC35998  Streptanthus longisiliquus R. E. Preston 1982-6-23 314 Butte On banks of roadcut and at sides of road, ca. 2 mi sse of Stirling City. 944 Comment
  RSA731184  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte 0.8 km north of Robley Point. 939 Comment
  CAS-BOT-BC87440  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte South of Serpentine Point and above Highway 70. 518 Comment
  CHSC35749  Streptanthus polygaloides R. E. Preston 1982-5-18 285 Butte Ca. 0.5 mi sw of Forbestown Dam. 640 Comment
  CHSC43439  Streptanthus polygaloides Lowell Ahart 1979-6-9 1928 Butte Near the edge of the dirt road that goes to the West Branch of the Feather River, about 1/2 mile east of Magalia/ 640 Comment
  CHSC78133  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  JEPS118207  Streptanthus polygaloides Dean W. Taylor 2004-6-17 19112 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  SEINET10448516  Streptanthus polygaloides Mary Susan Taylor 1981-5-15 Taylor 3737 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CHSC37699  Streptanthus tortuosus M. S. Taylor 1981-5-13 3702 Butte Granite knoll, above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 0.5 mi w of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  CHSC21273  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1973-4-21 13 Butte Ca. 4 mi s of Cherokee, ca. 100 yds w of Cherokee Rd, on Table Mountain. 373 Comment
  JEPS117225  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2010-5-16 16695 Butte Basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC88057  Swertia albicaulis var. nitida R. D. Fischer 2004-5-30 183 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  JEPS7824  Swertia albicaulis var. nitida Rimo Bacigalupi with Richard Hauke and Georgie Bacigalupi 1954-7-15 4720 Butte 0.3 mi e Nimshew (along Nimshew road, 1.1 mi below its junction with main Magalia-Tirling road) 792 Comment
  CAS-BOT-BC269532  Symphoricarpos albus var. laevigatus Clarence R. Quick 1952-6-30 52 -101 Butte Big Bar Mt., east of Pulga Comment
  JEPS113207  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 13889 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  CAS-BOT-BC99223  Symphyotrichum ascendens H. F. Copeland 1920-8-1 168 Butte Jonesville 1219 Comment
  CHSC31584  Symphyotrichum chilense Lowell Ahart 1977-9-20 1572 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43239  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC66847  Symphyotrichum chilense Vernon H. Oswald 1996-9-30 8293 Butte