Search Results — 2000 specimen records retrieved (1612 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=BUTTE; Source=All;   

Mapping Options:

BerkeleyMapper with county and bioregion layers
BerkeleyMapper without layers.
KML export
(Note: only records with coordinates are mappable)

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

PLEASE NOTE: Due to changes in newer versions of Excel, directly copying text from the above selected results does not produce a usable table.
    Follow these steps:
      1. The contents of the selected results window must be copied into a text editor like TextEdit for Mac or WordPad for Windows
      2. The selected results must be saved as a new text document.
      3. This new text document can now be copied into Excel or imported as a tab delimited text file.

(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 Records are made available under the CCH Data Use Terms.

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3900  Abies concolor R. Carter 1966-7-31 498 Butte 17 mi NE of Oroville on W side of Big Bald Rock along E side of Big Bald Rock Rd. 1066 Comment
  NY29501  Abies lowiana A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280.2 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 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
  UC201330  Achillea millefolium A. A. Heller 1917-7-26 12835 Butte open places in the yellow pine forest Butte Meadows 1402 Comment
  CHSC103109  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  RSA712954  Achnatherum lemmonii var. lemmonii L. Ahart 2006-5-10 12625 Butte Bardees Bar Road, South of the small stream, About 200 yrds NW of poor bridge across the North Fork of the Feather River at Bardees Bar, About 2.5 air mi SW of Pulga Comment
  JEPS110266  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  CHSC6686  Achyrachaena mollis Marilyn Lee 1968-4-19 136 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC42557  Acmispon parviflorus Lowell Ahart 1987-5-6 5522 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC90225  Acmispon parviflorus Eric M. Haney 1989-4-23 11 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC113468  Aconitum columbianum subsp. columbianum Lowell Ahart 2014-7-13 19652 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC391378  Aconitum columbianum subsp. columbianum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC45536  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC52672  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 355 Butte N part of Butte County, n of Philbrook Reservoir, at Coon Hollow. Streamside. 1633 Comment
  CHSC39125  Aconogonon davisiae R. A. Schlising 1982-7-12 4318 Butte Near Humbug Summit in n part of county. Near Humbug Road. 2011 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC26741  Adenocaulon bicolor M. S. Taylor 1977-8-17 1466 Butte On edge of Montane Meadow, ca. 25 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1341 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC30820  Adiantum capillus-veneris M. S. Taylor; J. D. Jokerst 1980-4-18 2540 Butte S side of Humbug Rd, ca. 1 mi ne of Centerville. 365 Comment
  CHSC34680  Adiantum capillus-veneris M. S. Taylor 1980-2-17 2364 Butte Along a creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  HSC102685  Aegilops neglecta J. P. Smith 2013-5-5 13699 Butte Near the boat ramp area north of Grand Avenue at the Thermalito Forebay Recreation Area South. 67 Comment
  CHSC110345  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 5.6 road km north of the bridge over Canyon Creek arm of Lake Oroville. 357 Comment
  CHSC78216  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  RSA739615  Aegilops triuncialis L. P. Janeway, B. Castro 2007-5-19 8978 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 88 Comment
  UCD51548  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC29617  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  UC726518  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1074 Comment
  CHSC112689  Agrimonia gryposepala Lowell Ahart 2013-7-1 18815 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC127446  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 1066 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  CHSC46100  Agrostis exarata J. D. Jokerst; R. A. Schlising 1982-10-7 1656 B Butte Coon Hollow along forest service rd. 27N74, 1/2 mile west of the West Branch of the Feather River. Comment
  CHSC47697  Agrostis exarata Lowell Ahart 1989-9-21 6397 Butte Along the west edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC61654  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC46603  Agrostis idahoensis V. Oswald; L. Ahart 1989-7-21 3881 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  JEPS94190  Agrostis microphylla Lowell Ahart 1998-4-29 7952 Butte ca. 7 mi. n. Oroville (n.e. of large parking area on North Table Mt., on e. side of Cherokee Rd.); North Table Mt. 426 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
  CDA13331  Agrostis scabra G. F. Hrusa, T. D. Wilfred 1996-7-9 13177 Butte Sierra Nevada; Dry, open woods of Ponderosa pine approx. 0.4 m from Hwy 162 on 22N89. Perennial. Uncommon here. Comment
  CHSC25441  Agrostis scabra Hayes; Warner 1977-9-11 84 Butte Along roadside between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  UCD53348  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CHSC42839  Agrostis viridis Lowell Ahart 1987-5-27 5700 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  SEINET11688660  Aira caryophyllea J. M. Lund 1980-1 22 Butte Choco Game Fish Farm, 0.2 mi E of Hwy 99, 1.0 mi N of Hwy 149 76 Comment
  CAS-BOT-BC138409  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-7 2074 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC138346  Aira caryophyllea var. caryophyllea Lowell Ahart 1982-6-4 3550 Butte Sierra Nevada. On a lava cap, ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  SEINET10483793  Alchemilla occidentalis Mary Susan Taylor 1980-4-6 Taylor 2440 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
  CHSC31015  Alisma triviale M. S. Taylor; J. D. Jokerst 1979-11-11 2285 Butte Ca. 6 mi s of Chico on w side of Goodspeed-Watt (Aquas Frias Rd) Rd, in irrigation ditch. 33 Comment
  CHSC34032  Alisma triviale L. Ahart 1981-7-7 2926 Butte Along the edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  UCD137977  Alisma triviale P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unknown. Comment
  CHSC40626  Allium amplectens J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir ca 200 m sw of Lago Vista Rd. Comment
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  CAS-BOT-BC460739  Allium amplectens A. A. Heller 1914-4-16 11299 Butte In a field near the Plant Introduction Garden, Cico-Centerville road, 2 miles from Chico. Comment
  JEPS85594  Allium amplectens Roger Raiche 1983-4-12 30184 Butte Rt. 32 ne Chico (plateau ridge between Big Chico Creek and Little Chico Creek) 609 Comment
  CHSC36903  Allium campanulatum R. A. Schlising; R. Banchero 1980-7-11 3885 Butte NE part of county at s ecd of Walker Plains; along Oroville-Quincy Hwy. 1536 Comment
  UC398901  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 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
  CAS-BOT-BC135817  Allium jepsonii B. Castro 1993-8-3 491 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
  CAS-BOT-BC135821  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along both sides of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  JEPS109801  Allium jepsonii Dean W. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CHSC63941  Allium membranaceum Marion Ownbey; G. B. Ownbey 1946-6-26 2945 Butte Just east of Brush Creek Ranger Station. Comment
Read comments
Jun 24 2012
  CAS-BOT-BC472966  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CHSC96417  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. 762 Comment
  CAS-BOT-BC132077  Allium peninsulare var. peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC107294  Allium sanbornii var. sanbornii L. P. Janeway; Chris Cristofferson 2011-8-3 10627 Butte Northern High Sierra Nevada. Plumas National Forest; top edge of large northwest-facing granite outcrop near ridge top, overlooking Martin Creek; 1.6 air km northeast of Madrone Lake. 774 Comment
  CHSC36912  Allium sanbornii var. sanbornii R. A. Schlising 1981-7-24 4166 Butte NW part of county near Lomo (several miles NE of jct Hwy 32 and Humboldt Road to Butte Meadows). 1341 Comment
  SEINET6225024  Allocarya greenei L. S. Rose 1967-1 67056 Butte Oraville, Comment
  CHSC44408  Allophyllum divaricatum Lowell Ahart 1988-7-3 6117 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CHSC48645  Allophyllum divaricatum Vernon Oswald 1986-7-22 2215 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. On the edge of the road. 1097 Comment
  CHSC47975  Alnus incana subsp. tenuifolia Vernon Oswald 1984-7-31 1642 Butte Scotts John Creek at 26N27. 1755 Comment
  UCD110029  Alnus rhombifolia John Steiner 1977-4-23 55 Butte S bank of Chico Creek at e end of Chico Canyon Road. 65 Comment
  CAS-BOT-BC138170  Alopecurus aequalis var. aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CDA34706  Alopecurus saccatus L. 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. Comment
  CHSC116741  Alopecurus saccatus Lowell Ahart 2016-5-17 10837 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  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
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 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
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC1027  Ammannia coccinea V. Holt 1945-10-2 Butte Butte Creek canyon. 91 Comment
  CHSC19540  Ammannia coccinea F. T. Griggs 1974-8-8 143 Butte Growing in the Sacramento River between the Hamilton City bridge and the mouth of Big Chico Creek. Comment
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 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
  CHSC66657  Ammi visnaga Vernon H. Oswald 1996-7-17 8068 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Weed along the farm road between Fish Camp and the Riparian Sanctuary. 28 Comment
  RSA0036435  Amorpha fruticosa Lowell A. Ahart 2012-5-12 18027 Butte On the north side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of, Chico. 268 Comment
  CHSC100976  Amsinckia intermedia L. P. Janeway 2008-3-18 9231 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC60661  Amsinckia lycopsoides Vernon H. Oswald 1993-4-15 5269 Butte Upper Bidwell Park, Chico, along Upper Park Rd. near Devil's Kitchen. 207 Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  CAS-BOT-BC45251  Ancistrocarphus filagineus A. A. Heller; H. E. Brown 1902-5-12 5535 Butte Grade between Clear Creek and Paradise Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  JEPS98685  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  UC1609222  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) Comment
  CAS-BOT-BC64799  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte N side of the dam at Lost Creek Reservoir. 1005 Comment
  CAS-BOT-BC137750  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC44915  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  UC1609081  Anthoxanthum odoratum Lowell Ahart 1993-6-26 7013 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  UCR237315  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC84169  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2003-7-10 10370 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC90470  Aphanes occidentalis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC33372  Aphyllon purpureum Steven Azevedo 1980-4-16 16 Butte S edge of Mudd Creek, 1 mi e of Richardson Spring. 243 Comment
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  UCR88769  Aquilegia formosa J. T. Howell 1951-8-19 28156 Butte Sierra Nevada Mtns., 2 miles west of Pulga 366 Comment
Read comments
Oct 10 2010
  CHSC58257  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte Below the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  UC1594658  Arabidopsis thaliana Vernon H. Oswald and Lowell Ahart 1992-4-8 4896 Butte Trail near abandoned railroad grade in Oroville Dam Recreation Area, on s side of Thermalito Diversion Pool, between spillway and Sycamore Hill Oroville Dam Recreation Area; , Thermalito Diversion Pool 76 Comment
  RSA4203  Arabis rectissima E. B. Copeland 1929-7-14 s.n. Butte Jonesville. 1550 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 Comment
  SEINET6630800  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville Comment
  UCSC000190  Arceuthobium campylopodum H. F. Copeland 1928-8-29 s.n. Butte the summit of Humboldt Road - neighborhood of Jonesville 2134 Comment
  CAS-BOT-BC410082  Arceuthobium occidentale John Thomas Howell 1955-6-14 30440 Butte near Magalia 731 Comment
  CHSC33288  Arctostaphylos S. Posner; K. Stern 1972-9-24 1 Butte 200 yds south of Humbug Rd., 3 miles east of Skyway. Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  RSA632992  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27458 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CAS-BOT-BC24413  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek e. of Chico, especially on the n. slope. Comment
  CAS-BOT-BC38863  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile west of the Ten Mile House east of Chico in the digger pine belt. Comment
  CHSC21775  Arctostaphylos manzanita subsp. manzanita Robert A. Schlising 1974-9-17 3157 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  POM77541  Arctostaphylos mewukka C. C. Bruce 1897-01 1792 Butte Foothills Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  CHSC103425  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC106063  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CAS-BOT-BC38530  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 mi. from Paradise on road to Pentz. 426 Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  SD147589  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CHSC11946  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of 'the Summit'. 2100 Comment
  CHSC586  Arctostaphylos patula L. Stone 1930-3-16 Butte Near West Branch on Humboldt road. 975 Comment
  SD108266  Arctostaphylos truei Walter Knight, Irja Knight 1981-5-25 4109 Butte 27 miles north of Chico; State Highway 32. 1064 Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  SJSU10836  Arctostaphylos viscida L. J. Ericsen 1955-4-16 106 Butte between Paradise & Megalia 609 Comment
  CAS-BOT-BC47370  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51104 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47389  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6302 Butte Paradise at Berkshire Way and Bille Road just off The Skyway. Next to a bike trail. 274 Comment
  CAS-BOT-BC47390  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Feather Falls. 396 Comment
  CAS-BOT-BC48296  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51083 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC48298  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CAS-BOT-BC48300  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. Comment
  JEPS113134  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 46 Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  JEPS98536  Aristida dichotoma Lowell Ahart 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  SEINET11665616  Aristida oligantha Unknown 1977-1 1464 Butte Peter Ahart Ranch, Honcut, Valley grassland 50 Comment
  CAS-BOT-BC400429  Aristolochia californica John Thomas Howell 1975-6-15 51070 Butte Butte Creek near Chico 60 Comment
  CHSC108855  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte On the south side of Guardian trail, about 40 yards southwest of Pine trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. 361 Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  SBBG17310  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honey Run Rd, 0.5 mi W of Paradise 579 Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  SEINET10475902  Aristolochia californica Mary Susan Taylor 1973-1 Taylor 49 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC295837  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte About Chico Meadows 1219 Comment
  UCD129211  Arnica longifolia Robert E. Preston 1982-7-21 352 Butte Philbrook Creek, where dirt road crosses creek ca. 0.25 mile east of Philbrook Reservoir. 1688 Comment
  CHSC87782  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611255E 4411193N. 487 Comment
  CAS-BOT-BC90284  Artemisia douglasiana Lowell Ahart 1987-7-3 5760 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 890 Comment
  CHSC110044  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA769901  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg.) of Honcut, 6.6 mi. SE (116 deg.) of Gridley 27 Comment
  CHSC58670  Artemisia sacrorum M. Bailey 1991-6-6 Butte Growing in the median strip of Hwy 99, ca 1 mi N of its jct with Neal Road. 60 Comment
  CHSC38787  Arundo donax Vernon Oswald 1983-10-8 1053 Butte Upper Bidwell Park, Chico, at the retaining wall at the east end of Centennial Ave. 85 Comment
  SEINET10507281  Arundo donax Mary Susan Taylor 1975-10-3 Taylor 936 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  JEPS104737  Asarum hartwegii John L. Morrison 1940-5-19 3163 Butte 5.9 mi from Flea Valley; along Ponderosa Way 900 Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  SBBG17264  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Rd, 3 mi NE of Centerville Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  CAS-BOT-BC68883  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte 5 1/4 miles north of Feather Falls, about 1/4 mile south of the over-look to Feather Falls. 600 Comment
  HSC66083  Aspidotis californica M. S. Taylor 1980-3-19 2393 Butte Embankment of Macabes Cr. 100 ft. E of Lumpkin Rd. 2.5 mi. N of its jct. with Forbestown Rd.18 mi. NE of Oroville 396 Comment
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the 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
  SEINET10474430  Aster chilensis subsp. ascendens Mary Susan Taylor 1978-9-9 Taylor 1911 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  SEINET10532288  Athyrium filix-femina var. californicum Mary Susan Taylor 1981-4-16 Taylor 3545 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC11797  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  JEPS94940  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte about 3/4 mi n Golden Trout Crossing (on gravel bars on w side of sharp bend in the river, about 1/4 mi n of the bridge, 3 air mi ne of Sly Creek Reservoir Dam); South Fork of the Feather River 914 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
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  UCSB64018  Atriplex lentiformis Ahart, Lowell 1981-7-26 Butte east of the dirt road, about 1 mile north¬west of Pennington Road, about 1/2 mile north¬east of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  JEPS108754  Atriplex prostrata Lowell Ahart 2006-10-8 13431 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
  CHSC42851  Avena barbata Lowell Ahart 1987-5-6 5548 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  SEINET7297380 Image available Avena barbata A. A. Heller 1914-1 11207 Butte Moist places along a small stream eight miles north of Oroville, near the western base of Table mountain. Comment
  UCD56132  Avena barbata P. B. Kennedy 1914-5-1 4752 Butte Grade to Paradise. Comment
  SEINET10507661  Avena barbata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  SEINET263348  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Ca 1/12 miles NW of the West Branch Bridge across Lake Oroville; near the end of the dirt road that leads to Lake Orovil 271 Comment
  CDA34273  Azolla filiculoides L. Ahart 2009-10-8 16412 Butte About 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC66255  Azolla mexicana M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4370 Butte Pennington quad., ca. 1/2 mi s of HQ on Graylodge Waterfowl Refuge, ca. 12 mi sw of Gridley 19 Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  CHSC63694  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte On the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SEINET10474452  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1975-10-3 Taylor 948 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CAS-BOT-BC106429  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  CHSC6025  Bambusa M. MacArthur 1968-6-19 240 Butte Along NW side of Big Chico Creek, ca. 200 ft. NE bridge to PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC16376  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC16378  Barbarea orthoceras Clarence Roy Quick 1963-7-16 63 48 a Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CAS-BOT-BC16576  Barbarea orthoceras H. F. Copeland 1920-7-11 57 Butte Scotch John Meadows. 1828 Comment
  CHSC111129  Berberis Lowell Ahart 2012-6-21 18200 Butte Lawn, on the south side of the paved park road, weest of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  SEINET10932380  Berberis aquifolium Mary Susan Taylor Taylor 454 Butte Campus of the California State University, Chico. 61 Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  SEINET10536480  Berberis dictyota Mary Susan Taylor 1976-4-27 Taylor 1093 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  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
  JEPS97414  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SBBG128778  Bidens frondosa L. Ahart 2013-11-17 19259 Butte sides of McCabe Crk, below the high water line of Lake Oroville, ca. 5/8 mi SW of Enterprise Bridge across Lake Oroville 245 Comment
  UCD129573  Bidens frondosa E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC23409  Blennosperma nanum M. S. Taylor 1976-3-6 1018 Butte On top of Table Mountain, ca. 50 yds W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CHSC20522  Boechera sparsiflora M. S. Taylor 1975-4-29 542 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CAS-BOT-BC31372  Bolboschoenus maritimus James D. Jokerst 1982-4-29 1544 a Butte Grey Lodge Waterfoul Management Area adjacent to kirt road that is N of Rutherford Rd. Comment
  UC1751219  Botrychium minganense Timothy B. Devine 1985-7-7 846 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws Comment
  CHSC78221  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC113380  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC37652  Brickellia greenei T. B. Devine 1981-8-25 754 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CAS-BOT-BC127678  Brickellia greenei John Thomas Howell 1959-9-26 35089 A Butte On serpentine at Pulga Bridge, Feather River Canyon 417 Comment
  SEINET10474494  Brickellia greenei Lowell Ahart 1983-8-16 Ahart 4281 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  SBBG128018  Briza maxima L. Ahart 2010-5-14 16636 Butte W side Hwy 32, just N of the entrance to the Disc Golf Area, upper Bidwell Park, ca. 5 mi (air) NE of Chico 376 Comment
  POM196552  Brodiaea californica var. californica H. F. Copeland 1929-5-4 1156 Butte Canyon of Chico Creek. Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
Read comments
Jun 17 2014
  CHSC40079  Brodiaea elegans A. A. Heller 1938-5-22 15105 Butte Near Chico airport. Upper Sonoran Life Zone. Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  CAS-BOT-BC482927  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte Near the Chico airport Comment
  CAS-BOT-BC482930  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  SEINET189594  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise Sierra Nevada foothills 305 Comment
  HSC31885  Brodiaea minor R. A. Vanbianchi 1974-4-20 217 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  SEINET8466117 Image available Brodiaea minor Lincoln Coonstance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills Comment
  SEINET3888972  Brodiaea multiflora Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  CHSC70820  Brodiaea sierrae B. Castro; H. Durio, L. Gehrung 1995-7-25 593 Butte Ca. 2.5 air mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84. 944 Comment
  CHSC71461  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte On the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 54 Comment
  CHSC88147  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CHSC96834  Bromus carinatus var. carinatus Lowell Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  CDA29903  Bromus diandrus L. Ahart 2009-4-26 15611 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
  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
  RSA754797  Bromus diandrus L. Ahart 2009-5-8 15667 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC155464  Bromus hordeaceus Javier Penalosa 1962-6-18 2464 Butte Near Confluence of French and Peavine Creeks. 609 Comment
  CHSC30297  Bromus hordeaceus M. S. Taylor 1980-5-27 2643 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC39523  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte On the cut-bank along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. 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
  RSA712951  Bromus madritensis L. Ahart 2006-5-10 12622 Butte On the north side of the poor dirt road, Bardees bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Burdees bar, about 2 1/2 miles (air) southwest of Pulga. Comment
  CHSC99013  Bromus madritensis subsp. madritensis Lowell Ahart 2008-5-21 14777 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET6778931  Bromus mollis CSUC 1980-7-15 Butte Chico, Meridian road Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  UC1594605  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  CHSC82504  Bulbostylis capillaris Lowell Ahart; John Dittes 2002-6-17 9720 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  JEPS122070  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC103717  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 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
  CHSC47393  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 4595 Butte In a small pool, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CHSC10610  Calochortus albus Lowell Ahart 1962-4-25 Butte Ahart Ranch, Honcut. 45 Comment
  UC565379  Calochortus albus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  CAS-BOT-BC489971  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC44983  Calochortus luteus Richard A. Nichols 1980-4-26 19 Butte 10 yds w of Hwy 70, ca. 3 mi sw of Oroville and 6.7 mi n of Jct Hwy 70 and E. Gridley Rd. 91 Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC115417  Calochortus monophyllus Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC2239  Calochortus monophyllus N. Maxwell 1929-3-17 Butte Paradise. 609 Comment
  CHSC2240  Calochortus monophyllus M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC3298  Calochortus monophyllus M. L. Hillier 1966-4-23 Butte Along Hwy. 32 9 1/2 miles e. of C. S. C. Admin. Build. Chico. 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
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  CDA15391  Calochortus tolmiei G. F. Hrusa 1997-4-3 13689 Butte Sierra Nevada; Immed. above Paradise Lake dam along Old Railroad Grade Rd., approx. 3 m. N of Magalia. Comment
  UC1714555  Caltha biflora E. B. Copeland 1931-6-9 306 Butte Kennedy's Willow Creek Meadow Jonesville; , Jonesville 1550 Comment
  UC436309  Caltha biflora E. B. Copeland June, 1930 Butte Jonesville; Willow Creek Meadow 1550 Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  UC194199  Calycadenia fremontii H. M. Hall 1914-7-19 9761 Butte Richardson Spring, near Chico 91 Comment
  UCD129684  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico. Comment
  UCR51793  Calycadenia multiglandulosa Lowell Ahart, P. Ahart 1984-6-10 4687 Butte Sierra Nevada Mtns. Foothills, along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 mile east of Oak Grove Cemetery 500 Comment
Read comments
Oct 10 2010
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  CAS-BOT-BC106094  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  SEINET10473677  Calycadenia oppositifolia Lowell Ahart 1985-5-15 Ahart 4979 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET10473679  Calycadenia oppositifolia Mary Susan Taylor 1980-5-31 Taylor 2753 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  CHSC84753  Calycadenia truncata L. P. Janeway; John Hunt 2003-6-20 7857 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  CAS-BOT-BC275378  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC275418  Calycadenia truncata var. truncata Lewis S. Rose 1939-6-7 39250 Butte N Fork of Feather River, 3 miles S of Pulga 609 Comment
  CAS-BOT-BC275384  Calycadenia truncata var. truncata John Thomas Howell 1959-9-26 35089 Butte At Pulga Bridge, N Fork Feather River 417 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  UCD170555  Calycanthus occidentalis D. O. Burge 2017-8-16 2283 Butte Butte Creek. 220 Comment
  SEINET10535837  Calycanthus occidentalis Mary Susan Taylor 1981-7-10 Taylor 4065 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  UC1136676  Calyptridium monospermum J. E. Sowder 1933-7-5 103 Butte 2 mi se of Promentory Point 1066 Comment
  CHSC12006  Calyptridium umbellatum E. B. Copeland 1930-7-12 Butte Above Jonesville. 2000 Comment
  CHSC92549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8373 Butte Northern High Sierra Nevada. Plumas National Forest; on Saw-mill Peak, 350 m east of the Lookout Tower; 2.2 km east of Magalia. 991 Comment
  SEINET10496588  Calystegia occidentalis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4071 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  JEPS95023  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte about 2 air mi ne of Stirling City (s side of dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  UC600772  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville Comment
  CHSC62105  Calystegia occidentalis subsp. occidentalis L. P. Janeway 1993-7-2 4428 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Rd 22N84 2.6 mi from Rd 23N28 and 1.8 mi past its crossing of Stony Creek. 993 Comment
  UC478483  Calystegia occidentalis var. tomentella E. B. Copeland 1931-7-4 674 Butte Jonesville 1550 Comment
  CAS-BOT-BC493366  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC45797  Camassia quamash subsp. quamash L. P. Janeway 1988-6-25 2898 Butte Small mdw along Bull Hill rd 2.9 mi from The Skyway. 1508 Comment
  CHSC3623  Capsella bursa-pastoris John Francis 1966-2-21 28 Butte Orchard across road from Durham Cemetery. Comment
  CHSC38039  Capsella bursa-pastoris R. E. Preston 1982-12-4 369 Butte In a field; n side of River Rd at bend at Bremner Ranch, ca. 7 mi sw of Chico. 33 Comment
  CHSC90194  Capsella bursa-pastoris Robert Kissane 1989-4-23 20 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC48318  Cardamine breweri var. breweri Vernon Oswald 1984-5-9 1181 Butte Near Camp Lassen, Chico Meadows on Scout Rd. ca. 1 mi n of Butte Meadows. Near Chico Creek. 1292 Comment
  CHSC116961  Cardamine californica Matthew Forster 2013-2-27 Butte Found on Yahi trail in Riparian Community along Big Chico Creek. 90 Comment
  UCR51788  Cardamine californica H. F. Copeland 1929-5-9 1251 Butte Jonesville 1524 Comment
  CHSC60664  Cardamine californica var. californica Vernon H. Oswald 1993-4-12 5258 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track. 341 Comment
  CHSC29224  Cardamine oligosperma M. S. Taylor; J. D. Jokerst 1980-3-28 2406 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC43926  Carduus pycnocephalus Vernon Oswald 1988-5-5 3296 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the highway near Dry Creek. 53 Comment
  SEINET10836545  Carex Mary Susan Taylor 1978-6-24 Taylor 1653 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
  CHSC49385  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-16 3029 Butte Large meadow at head'waters' of Willow Cr. 1935 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  UCD140099  Carex angustata L. P. Janeway; R. A. Schlising 1988-7-16 3006 Butte along Willow Creek 1/2 mile NW of Jonesville. 1508 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SEINET4285994  Carex athrostachya Unknown 2010-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET10585608  Carex aurea Lowell Ahart 1987-5-22 Ahart 5678 Butte Near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC43914  Carex barbarae L. P. Janeway 1986-9-20 1882 Butte West side of Comanche Cr and north side of Ord Ferry Rd. 33 Comment
  CAS-BOT-BC19411  Carex bolanderi Lewis S. Rose 1937-6-10 37364 Butte Hurleton. 579 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
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  CHSC48543  Carex brainerdii L. P. Janeway 1987-6-8 2161 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of road to Coyote Gap. 640 Comment
  SEINET10752408  Carex brainerdii Lawrence P. Janeway 1988-7-16 Janeway 3009 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 12. Along Colby Mountain Rd., 1/2 mi N of Jonesville. Comment
  CAS-BOT-BC31777  Carex cyrtostachya Lowell Ahart 1988-6-29 6108 Butte Along Bean Creek, at the bridge on Bean Creek Road, ca 1/2 mi SW of Johnson Ranch, 609 Comment
  CAS-BOT-BC320482  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls 1219 Comment
  CAS-BOT-BC34955  Carex densa L. P. Janeway 1988-6-25 2855 Butte Ridgetop above Clark Road (Hwy 191) 4.9 miles N of Durham-Pentz Road. 381 Comment
  SEINET3450851  Carex densa Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Ohio 120 Comment
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  SEINET7483993 Image available Carex echinata E. B. Copeland 1929-1 610 Butte Jonesville. 1500 Comment
  SEINET10650253  Carex eurycarpa Edwin B. Copel 1930-8-10 Copeland 609 Butte Jonesville. In marshy meadows, common. 1500 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
  CHSC43911  Carex fracta L. P. Janeway 1987-6-8 2157 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CHSC83286  Carex fracta L. P. Janeway; B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  SEINET4292216 Image available Carex fracta Unknown 2006-1 13068 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  SEINET8067785 Image available Carex fracta L. Janeway, Gog, L 2008-1 3188 Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  SEINET7485255 Image available Carex gracilior Peter F. Zika 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) 640 Comment
  CHSC43898  Carex heteroneura var. heteroneura L. P. Janeway; C. A. Janeway 1986-8-31 1806 Butte Along Scotts John Cr at crossing of Jonesville-to-Humbug Summit Rd (26N27), 3 mi from Humboldt Rd. 1737 Comment
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC6658  Carex hirtissima Marilyn Lee 1968-4-19 116 Butte West side of Cherokee Road, 2 miles south-east of cemetary. Table Mt. Comment
  CHSC48550  Carex hoodii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3144 Butte Southwest-facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  CAS-BOT-BC17169  Carex jonesii V. Oswald; Lowell Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi. N of Lost Creek Reservoir 1066 Comment
  CHSC59006  Carex laeviculmis Lowell Ahart 1992-6-26 6783 Butte Bog like area, on the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  UCD140478  Carex lemmonii Robert E. Preston 1982-7-16 335 Butte Crane Valley. 1584 Comment
  CAS-BOT-BC32160  Carex multicaulis L. P. Janeway 1988-5-19 2666 Butte Cohasset quad, West Branch Mud Creek at crossing of Vilas Road, E of Cohasset. 746 Comment
  CHSC52260  Carex nebrascensis L. P. Janeway; Patty Costello 1987-9-5 2578 Butte NW side of Big Chico Cr below the road to Soda Springs campground near Hwy 32. 1127 Comment
  CHSC52263  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1853 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CHSC89037  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8245 Butte High Cascade Range. At Cold Springs; north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  UC1609338  Carex nudata Lowell Ahart 1993-4-8 6931 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC94253  Carex pachystachya Lowell Ahart 2006-7-16 12980 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
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  CHSC52240  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  CHSC48560  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3078 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC41301  Carex subfusca S. C. Morey 1983-7-22 537 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  CHSC52883  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2991 Butte At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1569 Comment
  CHSC83190  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  JEPS110338  Carex subfusca Lowell Ahart 2006-7-16 12980 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
  SEINET10750078  Carex subfusca Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2497 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 36. Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1661 Comment
  RSA769593  Carex utriculata L. Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  UC1562479  Carex vulpinoidea Vernon Oswald and Lowell Ahart 1990-5-26 4254 Butte s Oroville (Pacific Heights Rd. entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  CHSC99390  Carex whitneyi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10532 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. Upslope from creek. 1740 Comment
  CAS-BOT-BC499135  Carex xerophila Peter F. Zika; L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mi N of Skyway Rd. 720 Comment
  JEPS108148  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir 762 Comment
  CAS-BOT-BC249114  Castilleja affinis A. A. Heller 1919-4-12 13101 Butte Cherokee Mine 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
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  UCR133594  Castilleja applegatei H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  CAS-BOT-BC249589  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1964-7-9 64 -58 Butte North of Jarbo Gap Comment
  CAS-BOT-BC249597  Castilleja applegatei subsp. pinetorum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  CHSC114977  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20033 Butte On the north side of Rim Road, about 2-1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. 830 Comment
  CHSC114979  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  CHSC44773  Castilleja applegatei subsp. pinetorum R. Banchero 1980-5-12 152 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  JEPS123822  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CHSC103933  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS119587  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CHSC3318  Castilleja exserta M. Gregg 1966-3-28 54 Butte On Cherokee Rd. to the top of Table Mt. 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
  CHSC93991  Castilleja lacera R. D. Fischer 2004-6-20 777 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. West of pond in a cleared area. 1371 Comment
  CHSC42854  Castilleja subinclusa Lowell Ahart 1987-5-11 5614 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 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
  UC886575  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  LA42059  Ceanothus cuneatus Carl B. Wolf; 1937-3-29 8338 Butte 7 8/10 mi. below Paradise on Chico Road 152 Comment
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC109561  Ceanothus cuneatus var. cuneatus L. P. Janeway 2012-6-23 10889 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC3277  Ceanothus integerrimus M. L. Hillier 1966-5-9 Butte In small open field along rd. side 6.8 miles n.e. of the Skyway on Humbug rd. Comment
  RSA399894  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SEINET10493644  Ceanothus lemmonii Mary Susan Taylor 1980-5-8 Taylor 2593 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC10678  Ceanothus oliganthus var. sorediatus Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 60 Comment
  CHSC86136  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
  CHSC25458  Ceanothus velutinus Marc Hayes; Warner 1977-9-11 97 Butte At Humboldt Summit, on Butte-Tehama Co. line, ca. 10 m up the Pacific Crest Trail by Humboldt Peak. 2011 Comment
  CHSC6002  Cedrus atlantica M. MacArthur 1968-6-19 246 Butte Front of Administration bld., Chico State College. 60 Comment
  CHSC100470  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15425 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  UC179660  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte hills 8 mi n Oroville Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  CHSC35752  Centaurea melitensis R. E. Preston 1982-6-2 292 Butte Ca. 0.7 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 365 Comment
  JEPS117545  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 55 Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  CHSC31597  Centaurea solstitialis L. Ahart 1977-6-16 1418 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  SEINET11839287  Centaurea solstitialis Unknown 1969-1 98 Butte 0.5 mi N of Chico Municipal Airport on Cohasset Road Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  CHSC28481  Centaurium tenuiflorum Robert Schlising 1979-8-17 3468 Butte 1/4 mi s jct Hwys 162 to Oroville and 99; along the latter and across from Thermalito Afterbay; widespread at ditch margins but not in grassland. Comment
  CHSC66662  Centromadia parryi subsp. rudis Vernon H. Oswald; Lowell Ahart 1996-7-22 8096 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Sanctuary II. 33 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CHSC34180  Cerastium fontanum subsp. vulgare L. Ahart 1981-9-15 3160 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC113243  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC42722  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls. 1280 Comment
  JEPS108823  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 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
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC388257  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  CHSC21067  Ceratophyllum demersum M. S. Taylor 1975-10-4 960 Butte In Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC1543  Cercocarpus betuloides var. betuloides E. Carlson 1937-4-12 Butte Site of Ten-mile House, Humbolt Road. 426 Comment
  CHSC20042  Cercocarpus betuloides var. betuloides M. S. Taylor 1975-4-25 499 Butte Ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC11107  Chamaesyce glyptosperma Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113525  Chamaesyce maculata Lowell Ahart 2014-9-23 19879 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
  CHSC94723  Chamaesyce maculata Lowell Ahart 2006-9-28 13385 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
  CDA13844  Chamaesyce nutans G. F. Hrusa, T. D. Wilfred 1996-9-6 13572 Butte Butte Basin; E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  UC176082  Chamaesyce ocellata subsp. ocellata A. A. Heller 1913-9-16 11140 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC61315  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  RSA726434  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2007-11-3 14564 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC69476  Cheilanthes cooperae Wayne D. Dakan 1974-4-15 s.n. Butte Near bridge at West Branch of Feather River on Hwy. 70. Comment
  JEPS104147  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  UC398877  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 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
  CHSC61644  Chimaphila menziesii Lowell Ahart 1993-9-8 7161 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  UC474264  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte woods near Jones Creek (Jonesville); Jonesville Comment
  CHSC44073  Chimaphila umbellata L. P. Janeway 1987-6-8 2160 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of rd to Coyote Gap. 640 Comment
  SBBG16796  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville 1550 Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) Comment
  CAS-BOT-BC497799  Chlorogalum angustifolium Lowell Ahart 1989-5-23 6261 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, north of Bangor. 426 Comment
  JEPS114776  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 482 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  CHSC31736  Cicendia quadrangularis L. Ahart 1974-4-7 353 Butte In fields. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC279862  Cichorium intybus John Thomas Howell 1959-9-20 34629 Butte Eastern outskirts of Oroville 60 Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  SEINET5507008 Image available Cirsium andersonii E. B. Copeland 1931-7-27 n.s. Butte Jonesville 1650 Comment
  UC177566  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte northern Butte County Sierra Nevada Mountains Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  UC179477  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC285526  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30485 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC8131  Cirsium occidentale var. venustum K. Henegar 1969-5-19 96 Butte Upper Bidwell Park, across from Alligator Hole. Comment
  CAS-BOT-BC228756  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  CHSC39040  Clarkia arcuata R. A. Schlising 1983-6-9 4420 Butte Carpenter Ridge NE of Lomo, along Humboldt Road. 1341 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  RSA18617  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-6-12 8783 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CAS-BOT-BC163266  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Along the road, south-east of Concow Res. 500 Comment
  CHSC65577  Clarkia mosquinii L. P. Janeway 1995-7-15 4857 Butte South side of Watson Ridge about 2.2 mi east-northeast of its western end, and 1.1 mi south of Pompys Point. 1115 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
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  RSA0004431  Clarkia mosquinii subsp. mosquinii T. Mosquin 1959-7-3 3335 Butte 3.7 miles southwest of entrance ot Plumas National Forest, along Hwy 40 Comment
  CHSC25036  Clarkia purpurea G. Foster 1972-5-23 9 Butte On s side of hwy 32 ca. 3.2 mi e of highway 99 overpass. Comment
  CHSC52094  Clarkia purpurea R. C. Kirkpatrick 1972-4-25 39 Butte Found ca. 100 yds. se of Horseshoe Lake and ca. 50 yds sw of the skeet shooting range. 152 Comment
  CHSC81384  Clarkia purpurea Samantha Hillaire 2001-5-16 303 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
  CAS-BOT-BC172529  Clarkia purpurea subsp. purpurea A. A. Heller 1912-5-23 10749 Butte Table Mountains Olive Ranch north of Oroville Comment
  CHSC101131  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC59110  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. Southwest-facing road-cut. 512 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  JEPS115573  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  POM219367  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest between Willow and Colby creeks. 1677 Comment
  UC725286  Clarkia rhomboidea A. A. Heller 1937-5-31 Butte Yankee Hill Jarper Pass Comment
  CAS-BOT-BC165439  Clarkia unguiculata L. P. Janeway 1991-6-1 3986 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CHSC35146  Clarkia unguiculata R. Schlising; R. Banchero 1980-6-6 3660 Butte N of Lake Oroville along Hwy 162, 1.9 miles N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  SEINET10572699  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3493 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
  CHSC10853  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32637  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-2 3467 Butte In serpentine gravel at base of cliff, se side of Forbestown Reservoir, s of rd 20N29, ca. 3 mi n of Woodleaf. 548 Comment
  CHSC60687  Claytonia parviflora subsp. parviflora Vernon H. Oswald; Jim Snowden 1993-3-18 5234 Butte South side of Nugen Canyon, on the SE side of Neal Rd., about 0.4 mi southeast of 'The Narrows'. 109 Comment
  JEPS107415  Claytonia parviflora subsp. parviflora Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  UCD100697  Claytonia parviflora subsp. parviflora M. Vincent 1963-6-8 397 Butte Honey Run Road. Comment
  SEINET11933232  Claytonia perfoliata Unknown 1979-1 s.n. Butte Hamlin Canyon Quad. 7.5 ft S of Butte Creek 152 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC28634  Claytonia rubra subsp. rubra M. S. Taylor 1979-3-31 1976 Butte Lickey Ranch, along Ishi trail, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC3749  Claytonia rubra subsp. rubra R. L. Adams 1964-4-12 59 Butte Skyway, 1/2 mi. S. on Elliott Rd. Paradise. Comment
  CHSC52815  Clematis lasiantha Michael P. Crivello 1979-4-14 Butte 3 mi ne intersection of Skyway and Humbug rd., on Skyway. 100 yds s of road, on south slope. 137 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  CHSC3970  Collinsia sparsiflora J. Senter 1967-4-3 3 Butte 100 yds. S.E. slope near covered bridge on Humbug Rd. 76 Comment
  CHSC2449  Collinsia tinctoria R. Carter 1965-7-8 279 Butte Found at old Berry Creek R. R. station on N Fork of Feather R., ca. 2.2 mi. NW of Lake Madrone, 20 yds. W of R. R. tunnel and 10' down bank. 210 Comment
  CHSC10580  Collomia heterophylla Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  CHSC38590  Collomia heterophylla Vernon Oswald 1983-5-15 494 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion channel. 79 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  POM225859  Comandra umbellata subsp. californica J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  RSA755266  Comandra umbellata subsp. californica L. Ahart 2009-5-15 15704 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  UC1609146  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1993-4-21 5292 Butte 2.25 air mi nw of Magalia (on w side of Middle Butte Creek Trail, Ponderosa Way); Middle Butte Creek Trail, Ponderosa Way 731 Comment
  CHSC440  Convolvulus arvensis E. Lusk 1949-5-30 Butte Lindo Channel near Chico. 57 Comment
  JEPS115666  Convolvulus arvensis Lowell Ahart 2009-5-30 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC2334  Corallorhiza striata R. Carter 1964-6-12 117 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown Rd. 914 Comment
  CHSC105792  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. 243 Comment
  JEPS60488  Cordylanthus pilosus subsp. hansenii T. I. Chuang and L. R. Heckard 1969-8-20 6739 Butte 3.2 mi sw Nimshew (on Humbug Rd (w of Magalia)) 304 Comment
  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC37675  Cordylanthus tenuis subsp. viscidus M. S. Taylor 1982-8-16 4990 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  CHSC80577  Coriandrum sativum Lowell Ahart 2001-6-13 8815 Butte Center 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
  POM253233  Cornus californica A. A. Heller 1938-7-20 15282 Butte Snag Lake east of Chaparral on the Humbug Road. 1524 Comment
  SD3504  Cornus californica E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  JEPS88911  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  UCD117251  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  CAS-BOT-BC210521  Cornus sessilis Clarence R. Quick 1952-6-29 52 -90 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CAS-BOT-BC401854  Corydalis caseana subsp. caseana Mrs. C. C. Bruce 1897-7-1 1192 Butte Butte Creek Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 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
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  JEPS117559  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 Comment
  CAS-BOT-BC427624  Crassula aquatica John Thomas Howell 1978-4-17 52835 Butte Table Mountain 381 Comment
  CHSC100971  Crassula connata L. P. Janeway 2008-3-18 9238 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  JEPS94193  Crassula connata Lowell Ahart 1998-4-8 7950 Butte 0.25 mi. n.e. Oroville (0.1 mi. n. of Thermalito Diversion Dam, w. of the dirt rd., e. of the Thermalito Diversion Pool) 67 Comment
  CHSC94250  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  RSA774125  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  SEINET10497261  Cryptantha affinis Lowell Ahart 1983-8-16 Ahart 4292 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
  UC196286  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  RSA29026  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET9628262 Image available Cryptogramma acrostichoides H. F. Copeland 1932-8-19 Butte Woods below crest Butte Creek. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CAS-BOT-BC85565  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6161 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  UCD133530  Cupressus macnabiana Mike Mitzel 1977-2-13 3 Butte ca. 0.5 mi W of the West Branch River and 4 mi N of Paradise. 762 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC27180  Cupressus sempervirens M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 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
  CHSC113967  Cuscuta campestris Lowell Ahart 2014-11-24 19918 A Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC33423  Cuscuta howelliana R. A. Schlising 1981-6-14 4082 c 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
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  CHSC78509  Cuscuta pentagona Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC28484  Cycloloma atriplicifolium R. Schlising 1979-10-13 3497 Butte Along Sacramento River w of Chico. Just n of Chico Landing Site in Bidwlel River State Park. Comment
  SD3489  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC2486  Cynoglossum grande W. Fitzwater 1958-4-5 Butte Near Forest Ranch. Comment
  CHSC82508  Cynosurus echinatus Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10934072  Cynosurus echinatus K. Bridwell 1978-5-28 Bridwell 120 Butte Along Hwy 70, ca. 6 mi NE of intersection with Pentz-Magalia Hwy., ca. 4 mi SE of Paradise. Yellow Pine Forest. 762 Comment
  CHSC45113  Cyperus bipartitus Vernon Oswald 1987-6-15 3001 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC97258  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA739808  Cyperus difformis John Dittes 2003-10-8 849 Butte Butte County; undesignated section of Arroyo Chico Land Grant, Ord Ferry 7.5, Quad, Northern Sacramento Valley, 6 air miles W by SW of Chico, 2.3 air miles S of Hwy 32, E bank of Sacramento River, bidwell sacramento river State Park. 38 Comment
  UCD141017  Cyperus difformis H. L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CAS-BOT-BC114601  Cyperus eragrostis Ira L. Wiggins 1928-9-9 s.n. Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  CHSC102829  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 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. 234 Comment
  JEPS104086  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 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
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  POM111773  Cyperus eragrostis C. C. Bruce 1897-05 1887 Butte Little Chico Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  CHSC51020  Cyperus erythrorhizos Lowell Ahart 1990-8-15 6587 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
  CHSC68387  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1871 Butte Northwest side of Little Chico Creek near River Road, about 2 mi south of Chico River Road. 36 Comment
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of 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
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CAS-BOT-BC114021  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the city of Chico, on the CSU Chico Campus. Chico Quad. 59 Comment
  CHSC30386  Cyperus squarrosus J. D. Jokerst 1980-7-18 993 Butte Top of North Table Mt., ca. 100 m NW of the jct. of Cherokee Rd. and the E edge of Mt. Comment
  CHSC43137  Cyperus squarrosus Robert Banchero 1981-8-6 638 Butte Ca 3 air mi se of Jonesville. 1853 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
  CHSC99002  Cyperus squarrosus Lowell Ahart 2008-5-30 14797 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SD405  Cyperus squarrosus E. B. Copeland 1931-7-17 Butte Jonesville; abundant on drying bottoms of vernal pools. 1700 Comment
  JEPS113229  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock 844 Comment
  JEPS94943  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Little Kimshew Creek, Snow Meadow 1524 Comment
  RSA699257  Cystopteris fragilis L. Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  SEINET10833641  Cystopteris fragilis Mary Susan Taylor 1981-5-13 Taylor 3694 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  SEINET10833642  Cystopteris fragilis Mary Susan Taylor 1976-5-5 Taylor 1118 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC30519  Dactylis glomerata Sandra C. Morey 1980-4-19 67 Butte Paradise. Clark Road, ca. 2 mi. s of jctn with Pearson Road. Roadside next to field. 601 Comment
  JEPS116058  Dactylis glomerata Lowell Ahart 2009-6-19 15916 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC104848  Danthonia californica var. americana Lowell Ahart 2010-6-12 16798 Butte On the west side of a small drainage, on the east side of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  CHSC33854  Danthonia unispicata J. D. Jokerst; R. A. Schlising 1980-6-16 855 Butte Ca 50 met N of Humboldt Rd at a point 1.9 mi N of the jct with Hwy 32. Carpenter Ridge. Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  CAS-BOT-BC420353  Darmera peltata C. C., Mrs. Bruce 1898-2-1 2410 Butte unspecified Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  CHSC1445  Delphinium hesperium E. Scharsch 1931-4-1 Butte Magalia. 731 Comment
  CAS-BOT-BC9924  Delphinium nudicaule Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC87436  Delphinium nudicaule R. D. Fischer 2004-3-28 100 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. On bluff edge. 381 Comment
  SEINET3450728  Delphinium patens subsp. patens Unknown 2003-4-15 10100 Butte Oroville, Oroville, about 7 air miles north, about 1.25 miles northwest of the iron gate and fence, southwest of drainage entering Beatson Hollow, steep slopes of Beatson Hollow 280 Comment
  UC1185307  Delphinium recurvatum H. E. Brown May 1 1897-May 15 1897 207 Butte near Clear Creek Comment
  SEINET10536049  Delphinium recurvatum Mary Susan Taylor 1976-5-5 Taylor 1116 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC56092  Delphinium variegatum J. D. Jokerst 1981-4-5 1304 Butte North of Pine Creek; Wurlitzer Ranch; west of Hwy 99. Comment
  CDA24274  Delphinium variegatum subsp. variegatum T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  CAS-BOT-BC82879  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  SEINET10448605  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-31 Taylor 3452 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SD215  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville; border of the Lily Pond. Comment
  CAS-BOT-BC192653  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD62772  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Near Nelson. Comment
  SEINET10524196  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 Comment
  CHSC48253  Dianthus armeria subsp. armeria Vernon Oswald 1985-6-12 1828 Butte W side of Kunkle Reservoir se of Paradise. 445 Comment
  CHSC105687  Dicentra formosa subsp. formosa Lowell Ahart 2010-9-21 17202 Butte About 50 yards east of the poor dirt road, about 100 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
  CHSC19655  Dicentra peregrina K. R. Stern 1966-5-14 Butte Chico. Comment
  CAS-BOT-BC254496  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1984-7-19 4726 Butte Along the road, 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-BC500065  Dichelostemma capitatum A. A. Heller 1915-3-24 11778 Butte Low grassy hills 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodacatheon and Athysanus, the first plants in bloom.. Comment
  CHSC38768  Dichelostemma multiflorum Vernon Oswald 1983-5-18 346 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  CHSC4018  Dichelostemma multiflorum D. B. Joley 1967-4-21 27 Butte Ca. 3 feet n from Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd. 60 Comment
  CHSC2841  Dichelostemma volubile David Prall 1965-4-25 26 Butte On N side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge) Comment
  SEINET232463  Dichelostemma volubile Margaret J. Williams, Wayne Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC209031  Digitaria sanguinalis John Thomas Howell 1961-9-22 36733 Butte Bank of Feather River, Oroville 53 Comment
  CHSC31632  Digitaria sanguinalis L. Ahart 1977-7-19 1481 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  CAS-BOT-BC153211  Diplacus kelloggii Rimo Bacigalupi 1962-6-16 s.n. Butte Nelson Bar 213 Comment
  SEINET8360328  Diplacus kelloggii Unknown 1985-4-8 2220 Butte above Hwy. 70 2.3 mi SW of Pulga Rd. 610 Comment
  CHSC61336  Diplacus mephiticus Lowell Ahart 1993-7-31 7146 Butte On a log landing east of the dirt riad that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC154031  Diplacus torreyi Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC23490  Diplacus torreyi K. R. Stern 1974-6-30 5772 Butte Ca. 2 mi w of Philbrook Reservoir. Comment
  CHSC44770  Diplacus torreyi R. Banchero 1980-6-17 249 Butte Paradise Lake, 1.1 mi W of the jct of Loucretia and Coutolenc Rds. 762 Comment
  CHSC33420  Disporum hookeri R. A. Schlising 1981-6-29 4127 Butte Rag Dump (NW of Pulga, N of Concow Reservoir, E of Magalia), at Fall Creek. 1158 Comment
  CHSC109355  Dittrichia graveolens T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. On the west shoulder of Bardees Bar Road approximately 0.5 road km northeast of intersection of Bardees Bar and Big Bend Roads. 657 Comment
  CHSC113969  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  JEPS115038  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville 34 Comment
  JEPS115102  Dittrichia graveolens Lowell 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 60 Comment
  CAS-BOT-BC136232  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC48665  Dodecatheon alpinum Vernon Oswald 1983-7-6 828 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  HSC85998  Dodecatheon clevelandii John E. Hunter 1986-2-25 15 Butte Ca. 1 km E of Chico, 50 m S on Hwy. 32 75 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC90234  Dodecatheon clevelandii subsp. patulum Ross L. Jones 1989-2-25 4 Butte Ca. 100 m e of abandoned city dump bordered by Highway 32 and Humboldt Rd., immediate outskirts e of Chico. 60 Comment
  CHSC12185  Dodecatheon hendersonii Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  CHSC67291  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1953 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Adjacent to #1952. 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
  UCD19371  Dopatrium junceum E. Dean; with J. Ditomaso and E. Healy 2001-8-20 862 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC65990  Downingia bicornuta var. bicornuta Vernon Oswald 1996-5-9 7541 Butte Sacramento River National Wildlife Refuge. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the drying bed of seasonal marsh (N end of Tract 4.2, Sanctuary II). 33 Comment
  UC28961  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1889 Butte near Chico Comment
  CHSC19930  Draba verna M. S. Taylor 1975-3-3 396 Butte Along creek ca. 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 182 Comment
  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
  UCD123982  Drosera rotundifolia Barry Rice 2011-7-6 BR 110703 Butte no exact location. 1420 Comment
  POM36715  Drymocallis glandulosa var. glandulosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  UC600381  Drymocallis lactea H. F. Copeland 1932-8-19 Butte Jonesville Jonesville (at the Lily Pond) 1700 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  CAS-BOT-BC70855  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte along Old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  SEINET10530136  Dryopteris arguta Mary Susan Taylor 1979-3-20 Taylor 1949 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
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC117752  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Around buildings, Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC47403  Dysphania ambrosioides Lowell Ahart 1989-11-12 6404 Butte In a disturbed area near a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC113163  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC116127  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, 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. 236 Comment
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, 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. 236 Comment
  CHSC76050  Dysphania botrys G. F. Hrusa; T. D. Wilfred 1996-7-8 13082 Butte In full sun at old gun range. Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 800 Comment
  JEPS124155  Dysphania botrys Lowell Ahart 2015-11-7 20617 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
  CHSC40611  Dysphania pumilio Lowell Ahart 1985-10-12 5203 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reserovir, about 3 miles south of Paradise. 301 Comment
  CHSC49539  Echinochloa colona Vernon Oswald 1987-8-13 3212 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. On the edge of a bean field. 48 Comment
  CHSC108135  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SEINET4568109  Echinochloa crus-galli var. zelayensis P. Kennedy 1920-7-13 3094 Butte Chico Comment
  SEINET3928601  Echinochloa muricata Lowell Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles south of Oroville.; 0 50 Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA38810  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 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
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA38955  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8691 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC116007  Eleocharis atropurpurea Lowell Ahart 2015-10-2 20536 Butte On the north part of Horseshoe Lake, about 100 yards north of the Rod and gun club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC38904  Eleocharis atropurpurea Vernon Oswald 1983-7-21 891 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  CHSC31458  Eleocharis bella L. Ahart 1980-7-29 2510 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  JEPS98317  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte 4 air mi NE of Feather Falls (100 yds N of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides of a dirt road, about 100 yards north 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 1210 Comment
  CHSC75978  Eleocharis engelmannii Lowell Ahart; Vernon H. Oswald 1999-8-13 8144 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS113682  Eleocharis engelmannii Lowell Ahart 2007-7-27 14395 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  SEINET3441882  Eleocharis engelmannii Unknown 2000-7-4 8445 Butte Forbestown, Forbestown, about 3.5 air miles southwest, south of the intersection of Black Bart Road and Forbestown Road 730 Comment
  CHSC68430  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1916 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC71405  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte Bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 Comment
  CHSC34136  Eleocharis obtusa L. Ahart 1981-9-19 3186 Butte On edge of small pond ca. 100 m n of Cresta Powerhouse, the pond is a little e of Feather River, along its banks, along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC45312  Eleocharis pachycarpa Vernon Oswald 1988-9-21 3701 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  JEPS124330  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS95995  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98416  Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte 12 mi SE of Oroville (Peter Ahart Ranch, N margin of a large wash, 200 yds E of the road crossing, about 1 1/2 mi N and 1 1/4 mi E of Honcut) 36 Comment
  JEPS98613  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CDA38988  Eleocharis quinqueflora L. Ahart 2000-5-1 8333 Butte On the north margin of a large wash, just 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. Comment
  JEPS120615  Eleocharis radicans Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS98610  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC28462  Elymus caput-medusae R. A. Schlising 1979-5-30 3426 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC60870  Elymus caput-medusae Vernon H. Oswald; Lowell Ahart 1993-6-22 5559 Butte Gravel pit in Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  UC302239  Elymus glaucus E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  SEINET10554352  Elymus glaucus A. Arthur Heller 1914-7-23 Heller 11614 Butte Occasional in open places about thickets, Chico Meadows. This is in the yellow pine belt, but incense cedar, Douglas fir, & white fir are plentiful. 1219 Comment
  CHSC49541  Elymus glaucus subsp. jepsonii Vernon Oswald 1985-6-3 1801 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CHSC49492  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1983-7-6 814 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi e of Hwy 32. 1249 Comment
  CAS-BOT-BC410229  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  SEINET10874040  Epilobium adenocaulon var. parishii Mary Susan Taylor 1979-8-4 Taylor 2180 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CAS-BOT-BC166843  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 289 Comment
  CHSC31783  Epilobium canum subsp. latifolium L. Ahart 1978-10-8 1818 Butte On the bank of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC84897  Epilobium canum subsp. latifolium Gavin Blosser 2003-10-13 Butte Northern Sierra Nevada Foothills. Along the south side of Thermalito Diversion Pool 0.8 mi west of the base of Oroville Dam. Between the old railroad grade/horse trail and the Pool. 70 Comment
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  JEPS120645  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  OBI5728  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville 1500 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
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  SEINET12194727  Epilobium glaberrimum M. S. Taylor 1978-1 1726 Butte on N side of Butte Creek, ca 0.12 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd 1524 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC58932  Epilobium hornemannii subsp. hornemannii Lowell Ahart 1992-7-26 6854 Butte In a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  SEINET10453180  Epilobium minutum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4712 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC46582  Epilobium oregonense Vernon H. Oswald 1989-7-18 3864 Butte Humboldt Rd east of Butte Meadows, just e of the Butte Creek Bridge at Cherry Hill. Near the downstream corner of a meadow bordering Butte Creek. 1389 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC90982  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte 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
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC28760  Epipactis gigantea J. D. Jokerst 1979-6-16 142 Butte Upper Bidwell Park, Big Chico Cr. 167 Comment
  CHSC88066  Epipactis gigantea R. D. Fischer 2004-6-12 152 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  SBBG28789  Equisetum hyemale E. B. Copeland 1929-7-6 Butte Jonesville Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  CAS-BOT-BC57258  Equisetum laevigatum John Thomas Howell 1975-6-15 51072 Butte Butte Creek near Chico 60 Comment
  CAS-BOT-BC57256  Equisetum laevigatum Lowell Ahart 1968-5-5 s.n. Butte Peter Ahart Ranch, Honcut, Bank of North of Honcut Creek 150 Comment
  CHSC33114  Equisetum telmateia subsp. braunii M. S. Taylor 1981-5-15 3740 Butte Both sides of 22N92 between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 929 Comment
  CHSC75985  Eragrostis pectinacea var. pectinacea Lowell Ahart; Vernon H. Oswald 1999-8-13 8152 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC91269  Eremogone cliftonii L. P. Janeway 2005-5-29 8410 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
Read comments
Jul 8 2014
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC25464  Ericameria nauseosa var. speciosa Marc Hayes; Warner 1977-9-11 93 Butte Near the top of Humboldt Peak, near Butte-Tehama County line. 2133 Comment
  CHSC48145  Erigeron annuus V. Oswald; L. Ahart 1988-6-17 3391 Butte North side of the dam at Lost Creek Reservoir. 1005 Comment
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC295420  Erigeron inornatus var. calidipetris H. F. Copeland 1920-8-12 123 Butte Jonesville 1219 Comment
  CHSC11840  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Jonesville. 1550 Comment
  SEINET10474626  Erigeron inornatus var. viscidulus Mary Susan Taylor 1981-6-19 Taylor 3962 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CHSC72439  Erigeron petrophilus var. sierrensis L. P. Janeway 1998-7-31 5906 Butte Along dirt road 100 ft above north end of the Lost Creek Reservoir dam. 981 Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  CHSC78768  Eriochloa contracta Lowell Ahart 2000-9-11 8687 Butte On the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) south of Oroville. 42 Comment
  JEPS98674  Eriochloa contracta Lowell Ahart 2000-9-11 8687 Butte On the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) south of Oroville. 42 Comment
  LA205650  Eriodictyon californicum A. A. Heller; 1915-4-20 sn Butte 7 mi. below Centerville in the Sierra foothills 76 Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  SEINET10904443  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1980-10-6 Taylor 3357 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC63708  Eriogonum nudum var. pubiflorum Lowell Ahart 1994-10-9 7557 Butte On dry fine broken lava on the southwest part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  UCR263619  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte Northern Sierra Nevada Mountains, C. 3/4 mi northwest of Lotts Lake and c. 1 mile northeast of the Carr Mine 1799 Comment
  CHSC41365  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-6-22 4105 Butte E part of county NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  SEINET3860080  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Hwy 70 in Feather River Canyon at the turnoff to Pulga.; 0 Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  CAS-BOT-BC262205  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  UC849667  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte along Feather River Highway 23 mi from Oroville Comment
  CHSC60818  Eriophyllum lanatum var. croceum Vernon H. Oswald; Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  CAS-BOT-BC308154  Eriophyllum lanatum var. grandiflorum L. Constance; J. L. Morrison 1938-4-30 2176 Butte Near the Feather River 5 mi. SE of Oroville Comment
  CAS-BOT-BC308165  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC86430  Eriophyllum lanatum var. grandiflorum Jenny Marr 1994-6-13 86 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  RSA21662  Eriophyllum lanatum var. grandiflorum C. B. Wolf 1937-5-18 8732 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  CHSC90176  Erodium botrys Robert Kissane 1989-4-18 10 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC19933  Erodium brachycarpum M. S. Taylor 1975-2-16 374 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  POM88746  Erodium macrophyllum C. C. Bruce 1897-04 1932 Butte [No location information on label.] Comment
  UC203586  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC31894  Eryngium castrense L. Ahart 1977-6-3 1401 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4614  Erysimum capitatum var. capitatum R. Carter 1966-4-28 372 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N38; ca. 200 yds. S of 23N28 on E side of Hwy. 70 at base of road bank. 640 Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC28134  Erythranthe bicolor J. D. Jokerst 1979-5-7 221 Butte On top of Cohasset Ridge. 463 Comment
  CAS-BOT-BC153861  Erythranthe glaucescens R. F. Hoover 1968-5-29 11137 Butte Cohasset Road Comment
  CHSC41284  Erythranthe guttata S. C. Morey 1983-7-21 502 Butte Cherry Hill Meadow. On n side of Humbolt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45102  Erythranthe lewisii Lowell Ahart 1988-9-4 6177 Butte On the bottom and sides of Big Kimshew Creek, about 1 air mile north-east of Jones Meadow. The creek crosses a large meadow. 1920 Comment
  CHSC49009  Erythranthe pulsiferae Vernon Oswald 1987-6-9 2973 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbuf Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CHSC10602  Erythronium multiscapideum Lowell Ahart 1968-3-17 Butte Bidwell Park. 91 Comment
  CHSC36220  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC87535  Erythronium multiscapideum R. D. Fischer 2004-3-22 91 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and parking area for 10 Mile House Road 300 ft down rd. 457 Comment
  CHSC88642  Erythronium multiscapideum Linnea Hanson 1983-4-6 179 Butte Plumas National Forest. At Pulga Bridge, Oroville side. 426 Comment
  CHSC88662  Erythronium multiscapideum Linnea Hanson 1983-4-6 178 Butte Plumas National Forest. East side of West Branch of Feather River. 1005 Comment
  CAS-BOT-BC504527  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte Hills 12 miles northeast of Chico near Rock creek Comment
  CAS-BOT-BC504530  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Peter Ahart Ranch, Honcut, near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  UC175321  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC24152  Eschscholzia lobbii B. Bunge 1976-4-20 15 Butte Ca. 100 yd of Skyway, 5 mi ese of Chico. 213 Comment
  CHSC46497  Eschscholzia lobbii Lowell Ahart 1975-5-12 776 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC34808  Euphorbia crenulata M. S. Taylor 1980-5-8 2615 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET10939888  Euphorbia ocellata Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1392 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC43189  Eurybia integrifolia Robert Banchero 1981-8-4 642 Butte Ca 1.7 mi N of jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  CHSC50815  Eurybia integrifolia Vernon Oswald; Lowell Ahart 1990-7-19 4363 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.2 mi west of the Plumas County line. 1981 Comment
  CHSC58882  Eurybia integrifolia Lowell Ahart 1992-7-26 6861 Butte About 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 Comment
  UC600725  Eurybia integrifolia H. F. Copeland 1932-8-21 Butte near, Jonesville Kennedy's cabin 487 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS113325  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CHSC5935  Fatsia japonica M. Macarthur 1968-6-12 164 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 Comment
  JEPS116648  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Along Four Trees Road 3.4 road km east of Coyote Gap Soapstone Hill (at head of minor drainage into Clear Creek, head of French Creek Basin); Northen High Sierra Nevada 1469 Comment
  UC1609057  Festuca arundinacea Lowell Ahart 1993-6-15 6968 Butte about 3.5 (air) mi sw Forbestown (dirt road sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC41170  Festuca californica L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas National Forest; ecos plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  CAS-BOT-BC282486  Festuca elmeri A. A. Heller 1902-5-16 5562 Butte East Butte, Marysville Buttes Comment
  SEINET10508442  Festuca megalura Mary Susan Taylor 1978-5-7 Taylor 1595 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC111966  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. 62 Comment
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC111127  Ficus carica Lowell Ahart 2012-6-21 18227 Butte On the south side of Big Chico Creek, about 20 yards west of the freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC50553  Floerkea proserpinacoides Vernon Oswald; Lowell Ahart 1990-7-5 4352 Butte Headwaters of Willow Creek, 0.7 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  UC1562318  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte 0.5 air mi sw of Humbug Summit (near the headwaters of the north branch of Willow Creek, 0.6 mi w of Humbug Road via the logging road just s of Cold Springs); Willow Creek 1969 Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC62948  Frangula californica subsp. tomentella John Thomas Howell 1975-6-15 51073 Butte Butte Creek near Chico. 60 Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC109215  Frangula rubra B. Castro; L. P. Janeway 2004-6-13 1467 A 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; 0.15 rd mi NW of jcn with Abernathy Road. 829 Comment
  SEINET10457423  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  CHSC27636  Fremontodendron californicum Robert A. Schlising 1978-5-9 3229 Butte In chaparral south of Cohasset, along dirt road parallel with Cohasset Hwy, about 6 mi NE of Hwy crossing of Mud Creek. Comment
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC38879  Fritillaria affinis Vernon Oswald 1983-2-9 61 Butte Upper Bidwell Park, Chico, beside the North Rim Trail ca. 1.4 mi e of the power lines. 353 Comment
  CDA13889  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-8 13746 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SJSU8739  Fritillaria eastwoodiae L. J. Ericsen 1955-4-17 117 Butte Humbug Rd Comment
  CAS-BOT-BC505286  Fritillaria micrantha Lowell Ahart 1983-4-14 3933 Butte On east side of Woodleaf Creek above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC12113  Fritillaria recurva M. F. Smith 1972-4-22 2 Butte Northeast corner of section 23, two (2) miles south of Feather Falls community. 914 Comment
  UCD139683  Fritillaria recurva P. Thompson 1996-4-26 40 Butte Hwy 70 Belden. Along the north entrance of the Pacific Crest trail. 1000 Comment
  CAS-BOT-BC508143  Fritillaria recurva C. C., Mrs. Bruce 1897-4-1 2025 Butte Forest Ranch Comment
  CHSC27271  Galium aparine P. Moyer 1972-4-9 159 Butte CSUC Campus. S bank of Chico Ck., W of Warner St. Bridge. 60 Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  UCD121668  Galium aparine K. Esau; M. Phillips 1929-4-13 1919 Butte Chico. Comment
  CHSC113490  Galium bifolium Lowell Ahart 2014-7-10 19616 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10902545  Galium bifolium Mary Susan Taylor 1978-7-19 Taylor 1763 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC109850  Galium bolanderi L. P. Janeway 2012-6-23 10886 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
  SBBG29184  Galium bolanderi E. B. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC46406  Galium divaricatum Lowell Ahart 1989-5-28 6296 Butte About 1/2 mi north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC61648  Galium grayanum var. grayanum Lowell Ahart 1993-9-8 7165 Butte On the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  SEINET10968829  Galium nuttallii Mary Susan Taylor 1979-3-20 Taylor 1940 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA81683  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 miles S of Cherokee on road to Oroville. Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 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
  UC1523188  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte ca. 2 mi s Lake Madrone (n side of Oroville-Quincy Hwy) 609 Comment
  JEPS52624  Galium sparsiflorum subsp. glabrius Lauramay T. Dempster 1964-7-24 4046 Butte 1 mi s Nimshew (near creekbed) 658 Comment
  UC1586557  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte about 2 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  SEINET10500639  Galium tricornutum Mary Susan Taylor 1981-5-1 Taylor 3584 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  SEINET10500786  Galium trifidum var. subbiflorum Mary Susan Taylor 1978-6-24 Taylor 1638 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SBBG29181  Galium triflorum E. B. Copeland 1930-7-15 Butte Jonesville 1500 Comment
  CHSC108849  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of the Guardian trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. 426 Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  CHSC108324  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC26705  Gayophytum diffusum subsp. parviflorum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1459 Butte On e side of Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  UC1122566  Gayophytum heterozygum P. L. Johannsen 1936-7-16 920 Butte 1 3/4 mi ese Butte Mdws. (Plot #1); Lassen National Forest, Paynes Creek Quadrangle Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  CHSC37449  Gayophytum humile R. A. Schlising; R. Banchero, D. Ikeda 1980-6-26 3787 Butte 3.2 miles se of Butte Meadows on Bull Hill Road (= Skyway). In small meadows along Bull Creek. 1511 Comment
  CHSC81038  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CDA43067  Genista monspessulana L. P. Janeway 2011-5-2 10249 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC12613  Genista monspessulana S. Posner 1972-9-24 Butte Rocky n bank, Butte Creek. Ca. 300 yds s of Humbug Rd., ca. 3 mi e of Skyway. Comment
  RSA638255  Genista monspessulana Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8109 Butte Table Mountain; along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC93994  Geum macrophyllum R. D. Fischer 2004-6-20 766 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found along stream edge downstream of pond. 1371 Comment
  JEPS108861  Gilia capitata subsp. mediomontana Lowell Ahart 2006-5-19 12637 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
  RSA754853  Gilia capitata subsp. pedemontana L. Ahart 2009-5-30 15784 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  CHSC38593  Gilia tricolor Vernon Oswald 1983-3-9 145 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  POM74092  Gilia tricolor C. C. Bruce 1897-04 1925 Butte [No locality information provided] Comment
  SEINET12278809  Gilia tricolor Unknown 1890-1 s.n. Butte Comment
  CAS-BOT-BC266485  Githopsis diffusa Lowell Ahart 1982-6-15 3574 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls 1000 Comment
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  CAS-BOT-BC266588  Githopsis pulchella Roxana S. Ferris 1952-5-17 12485 Butte State Highway 32 about 6 miles E of Chico above Little Chico Creek Comment
  UC727174  Githopsis pulchella subsp. campestris A. A. Heller 1941-5-9 16106 Butte Clark Road, foot of the Paradise grade Paradise Grade Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC60605  Githopsis specularioides L. P. Janeway 1991-4-30 3919 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of Middle Fork Feather River. 426 Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC49551  Glyceria elata Vernon Oswald 1987-6-8 2958 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  CHSC39631  Glyceria occidentalis Lowell Ahart 1983-4-18 3936 Butte On the bottom of rice field, about 2 1/4 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch. Also, in a vernal pool north of Ahart home. 50 Comment
  CHSC44455  Glyceria occidentalis Lowell Ahart 1988-5-29 6014 Butte Bottom of a wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  JEPS115661  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
  CDA5621  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UC600737  Gnaphalium palustre H. F. Copeland 1930-8-28 Butte near head of Willow Creek; Jonesville Comment
  SEINET10938059  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4152 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
  CHSC44429  Gratiola ebracteata Lowell Ahart 1988-5-29 6009 Butte About 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD123729  Gratiola ebracteata R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  RSA302650  Grindelia hirsutula var. davyi J. R. Shevock 1972-5-19 1756 Butte Hwy 70, Feather River Canyon. 21 Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  NY43531  Grindelia hirsutula var. hirsutula S. Bianco 1995-9-23 1030 Butte Along dirt trail that extends from Ishi Trail in Concow 762 Comment
  CHSC11863  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  CHSC31715  Hainardia cylindrica L. Ahart 1974-6-3 464 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC78224  Hainardia cylindrica Lowell Ahart 2000-5-17 8364 Butte Near the south margin of the Thermalito Afterbay, on the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 mioles (air) west of Oroville. 42 Comment
  CHSC97790  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC80896  Hastingsia alba Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  POM110256  Hastingsia alba C. C. Bruce 1892-06 2434 Butte [no location specified] Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  CHSC45678  Hedypnois cretica Vernon Oswald 1986-4-10 1066 Butte Dunstone Dr. 0.1 mi n of LaPorte Rd. Roadside. Near Wilson Creek. 41 Comment
  CHSC66431  Helenium puberulum Vernon H. Oswald; Lowell Ahart 1996-6-10 7737 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  RSA0047072  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  SEINET10475610  Hemerocallis fulva Mary Susan Taylor 1975-6-22 Taylor 782 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC309787  Hemizonia congesta subsp. luzulifolia Lowell Ahart 1982-9-9 3768 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  SEINET9340684  Hemizonia fitchii Unknown 1937-7-11 37380 Butte 7 mi W of Honcut Open field Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC58673  Hesperolinon californicum M. Bailey 1991-5-25 Butte Growing on thin soils on a slope on Butte College campus, ca 300 ft east of Williams Road, nw portion of the campus. 83 Comment
  CHSC11792  Hesperolinon micranthum E. B. Copeland 1931-7-12 Butte Jonesville. Dry bare ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  RSA325952  Hesperolinon micranthum L. Ahart, P. Ahart 1983-6-21 s.n. Butte Along Bloomer Hill Rd., ca. 1.3 mi. w. of Oroville-Quincy Hwy., ca 15 mi. ne of Oroville. 450 Comment
  SD2744  Hesperolinon micranthum E. B. Copeland 1931-7-12 Butte Jonesvill. Dry bare ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In 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
  UCD19080  Heteranthera rotundifolia Carl M. Wick 1983-7-1 s.n. Butte State Hwy 162, ca. 3 mi. west of State Hwy 99, then 1 mi. south along Cherokee Canal on Lattemore Ranch. Comment
  CHSC116746  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC11860  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CAS-BOT-BC310278  Heterotheca grandiflora John Thomas Howell 1959-9-20 34626 Butte Eastern outskirts of Oroville 60 Comment
  CHSC110454  Heuchera micrantha var. erubescens L. P. Janeway 2013-5-19 11109 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  SEINET10479987  Hibiscus syriacus Mary Susan Taylor 1975-6-30 Taylor 824 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CDA7965  Hieracium albiflorum T. C. Fuller 1962-7-12 9193 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC66434  Hirschfeldia incana Vernon H. Oswald; Lowell Ahart 1996-6-10 7735 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CAS-BOT-BC55329  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte At Bagor. 304 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CDA34635  Holcus lanatus L. Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC41281  Holcus lanatus S. C. Morey 1983-7-21 499 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC4383  Holcus lanatus M. M. Gregg 1966-5-25 178 Butte S of Chico on Park Ave to intersection of 99E. Creek bed approx 50-80 ft. from intersection. Chico. Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  CAS-BOT-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  CHSC38822  Hordeum marinum subsp. gussoneanum Vernon Oswald 1983-4-18 332 Butte Upper Bidwell Park, Chico, on the north rim at a level approximately the e end of Horseshoe Lake. 152 Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  JEPS117266  Hordeum marinum subsp. gussoneanum Lowell Ahart 2010-5-14 16644 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CHSC20460  Hordeum murinum subsp. glaucum Dave Isle 1969-4-10 306 Butte Just off the E. side of the River Road about 1 mile S. of the River Road-HW 32 intersection. 59 Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  CHSC46239  Horkelia fusca subsp. parviflora Pauleen Broyles 1987-7-5 1075 Butte Ca 7 km n. of Inskip on Bull Hill Rd, along Coon Creek. 1500 Comment
  CHSC24675  Horkelia tridentata S. Deaton 1976-4-14 19 Butte 20 ft w of Feather Falls trail and 3 mi n of Falls parking lot. 914 Comment
  CAS-BOT-BC536260  Horkelia tridentata var. tridentata Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC55492  Hosackia stipularis var. ottleyi L. P. Janeway 1991-4-8 3868 Butte Ca 0.1 mi east of Dark Canyon Road, and ca 1.0 mi south of Hwy 70. 609 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC11966  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  CHSC41257  Hypericum anagalloides S. C. Morey 1983-7-21 476 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC48479  Hypericum concinnum Vernon Oswald 1984-6-14 1290 Butte Ponderosa Way between Cohasset and Chico Creek. Growing on the edge of the road in chaparral. Comment
  SD7538  Hypericum concinnum Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS117557  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  SEINET10532856  Ibicella lutea Mary Susan Taylor 1974-10-11 Taylor 328 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  SEINET4170702  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise , in the Arid Transition Zone. Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CHSC27339  Iris hartwegii subsp. hartwegii T. B. Devine 1977-6-5 420 Butte Growing in forest beside Humbug Road. 853 Comment
  RSA712968  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada: East end of Watson Ridge; along Road 21N25 about 0.5 miles north of Fall River and about 1.7 miles west of Kenebeck Ridge 1159 Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  RSA4657  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  JEPS94717  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  CAS-BOT-BC61879  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC61880  Isoetes nuttallii John Thomas Howell 1976-4-1 51530 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS117727  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC60644  Isoetes orcuttii Vernon H. Oswald 1993-4-12 5260 Butte North Table Mtn. Near the SW edge of Flag Canyon. 365 Comment
  CHSC45185  Isolepis cernua Lowell Ahart 1975-6-19 788 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120047  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD133407  Jensia rammii L. Ahart 1976-4-15 1067 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  CHSC97709  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 40 Comment
  CHSC42079  Juncus balticus L. A. Hinman 1986-4-3 7 Butte Ca. 6.5 mi ne of Chico. NW side of Mud Creek, ca. 20 yd w of creek. 195 Comment
  CHSC61517  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  UCD80374  Juncus bufonius var. bufonius CNPS SN Foothill Team 2005-4-15 SNFN 0081 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 50 m from the western boundary and ca. 70 m from the northern boundary. 85 Comment
  CHSC46600  Juncus bufonius var. occidentalis V. Oswald; L. Ahart 1989-7-21 3868 Butte Junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the w side of Colby Creek. 1487 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CDA42955  Juncus cyperoides L. Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. Comment
  CHSC112694  Juncus cyperoides Lowell Ahart 2013-7-1 18820 Butte Seep along road gutter, on the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC107572  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC111716  Juncus effusus subsp. pacificus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CHSC41304  Juncus effusus subsp. pacificus S. C. Morey 1983-7-22 540 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC94601  Juncus effusus subsp. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC96957  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  RSA725034  Juncus effusus subsp. pacificus L. 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
  JEPS118082  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1252 Comment
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  SEINET3450941  Juncus ensifolius Unknown 2003-6-30 10336 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CHSC102417  Juncus exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 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
  CHSC44246  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1988-7-13 3587 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  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
  RSA726662  Juncus howellii L. Ahart 2007-6-12 14079 Butte North edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  SEINET10472446  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4294 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
  CHSC36223  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3401 Butte Around edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC49617  Juncus leiospermus var. ahartii Vernon Oswald 1986-4-20 1974 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In vernal pool. 32 Comment
  CAS-BOT-BC110141  Juncus leiospermus var. leiospermus Lowell Ahart 1984-4-6 4543 Butte About 0.5 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC93503  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12584 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS117322  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  CHSC97419  Juncus occidentalis Robert Fischer 2006-5-28 1023 Butte Chico. Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. 243 Comment
  RSA0119330  Juncus orthophyllus Lowell A. Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC398898  Juncus orthophyllus E. B. Copeland 1929-7-16 347 Butte Jonesville 1550 Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 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
  JEPS87456  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 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
  JEPS113854  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
  CHSC113274  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte Along a small drainage and the poor road, about 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. 271 Comment
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  JEPS113761  Juncus usitatus Lowell Ahart 2007-7-31 14400 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
  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
  RSA727520  Juncus usitatus L. Ahart 2007-7-31 14400 -B Butte On the south strand of the Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  JEPS113744  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte S side of a drainage ditch, N side of Evans Reimer Road, about 1 1/4 mi E of Pennington Road, about 4 3/4 mi (air) SW of Gridley 22 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CHSC58281  Keckiella breviflora var. glabrisepala Lowell Ahart 1992-5-9 6765 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  UC1063301  Keckiella breviflora var. glabrisepala J. E. Sowder 1933-6-6 81 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  UCR47786  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada Mtns, Rocky slopes and fill along the Feather River about 2.9 mi south of the Plumas County line 549 Comment
  UCSB63914  Kelloggia galioides Ahart, Lowell 1997-8-1 Butte T24N, R5E, northwest 1/4 Section 18; , on the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; Yellow Pine Forest 1432 Comment
  JEPS119918  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  CHSC42372  Koeleria phleoides Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC26744  Kyhosia bolanderi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1469 Butte Meadows, around Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC340332  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  UCR183348  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Rd, Oroville 52 Comment
  SEINET10473868  Lactuca saligna Mary Susan Taylor 1977-8-16 Taylor 1443 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UCD133533  Lactuca serriola L. Ahart 1983-9-19 4457 Butte around 1/8 mile south of the Graylodge Wildlife Refuge headquarters, around 12 mile southwest of Gridley. 35 Comment
  CHSC26761  Lagophylla glandulosa M. S. Taylor; M. Hayes 1977-8-16 1438 Butte On both sides of Williams Rd, ca. 300 yds n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC32137  Lagophylla glandulosa L. Ahart 1972-10-4 143 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC341301  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CHSC50314  Lagophylla ramosissima subsp. ramosissima Vernon Oswald; Mary Bailey 1990-5-19 4221 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows', ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 137 Comment
  JEPS103412  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the W edge of the Midway, ca 1 mile N of Richvale. 30 Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  SEINET10473882  Lasthenia californica Mary Susan Taylor 1980-3-1 Taylor 2352 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  SEINET11804897  Lasthenia chrysostoma M. J. Luesebrink 1978-1 2 Butte ca 300 ft N of Skyway Rd, 3.8 mi E of jct with Humbug Rd, 4.6 mi E of jct with Hwy 99, ESE of Chico 274 Comment
  CHSC20057  Lasthenia fremontii M. S. Taylor 1975-4-18 485 Butte Around vernal pool, ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of Keefer-Lassen Rd, ca. 5 mi n of Chico. Comment
  CHSC46949  Lasthenia fremontii Lowell Ahart 1983-5-12 3974 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  UCD80079  Lasthenia fremontii CNPS SN Foothill Team 2005-5-4 SNFN 0200 c Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 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
  CHSC45006  Lasthenia glaberrima Lowell Ahart 1979-5-25 1888 Butte On the edges of pond, west of the Western Pacific Railroad, about 2 air miles south of Palermo. 33 Comment
  CHSC46248  Lasthenia glabrata subsp. glabrata Vernon Oswald 1989-4-10 3733 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  UCSC004636  Lasthenia gracilis Lowell Ahart 2005-5-11 11791 Butte T20N, R4E, northwest 1/4 Section 20, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off Cherokee Road, about 200 yeards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville Comment
  CAS-BOT-BC370793  Lasthenia platycarpha Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CAS-BOT-BC213338  Lathyrus jepsonii subsp. californicus H. E. Brown 1897-4-15 213 Butte Near Clear Creek Comment
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CHSC858  Lathyrus latifolius E. Walker 1932-6-23 Butte Magalia Creek marshes. 731 Comment
  CDA13276  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1996-7-9 13124 Butte Plumas National Forest; Summit of N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC25292  Lathyrus sulphureus M. S. Taylor 1977-7-15 1417 Butte On s side of Humboldt Rd, ca. 3 mi s of Paradise. 579 Comment
  CHSC28159  Lathyrus tingitanus R. J. Goedl 1979-4-21 32 Butte Ca. 5 mi n of Oroville, 5 ft w of Cherokee Mountain Road. 335 Comment
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  CDA42926  Leersia oryzoides L. Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 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
  UCLA64433  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near the upper limit of the digger pine in the Sierra foothills. Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC102419  Lepidium campestre Lowell Ahart 2009-7-9 16017 Butte On dry sandy soil, 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
  CHSC46254  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-20 3744 Butte Gray Lodge Wildlife Area, s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC104003  Lepidium didymum Lowell Ahart 2010-5-28 16740 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CAS-BOT-BC89875  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC38051  Lepidium nitidum R. E. Preston 1983-2-16 381 Butte In field on NW corner of The Skyway and Notre Dame Blvd, Chico. 68 Comment
  UC203609  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte 8 mi n Oroville (near w base of Table Mountain) Comment
  CAS-BOT-BC12846  Lepidium pinnatifidum Lowell Ahart 1981-7-26 3013 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC45097  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Around parking area at checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UCD115856  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS115285  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UCR148775  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise 335 Comment
  UC106784  Leptodactylon pungens Mrs. R. M. Austin July 1896 109 Butte mountains near Colby Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
Read comments
Jul 19 2018
  POM253017  Leptosiphon bicolor A. A. Heller 1938-4-11 15022 a Butte Back of the rifle range east of Chico. 91 Comment
Read comments
Jul 31 2010
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 Comment
  CHSC2430  Leptosiphon filipes R. Carter 1965-6-17 236 Butte Found ca. 15 mi. NE of Oroville at Bald Rock Dome, 15 yds. E of Bean Creek Rd. on road that goes to the dome. 1051 Comment
  CHSC86596  Leptosiphon filipes L. P. Janeway 2003-5-7 7779 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC29965  Leptosiphon harknessii R. A. Schlising 1980-6-30 3800 Butte Margin of meadow at Butte Meadows junction of Humboldt Road and Skyway. 1341 Comment
  CHSC58937  Leptosiphon harknessii Lowell Ahart 1992-7-29 6887 Butte Near Coon Hollow Creek, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC44320  Leptosiphon parviflorus Lowell Ahart 1979-4-16 1823 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  JEPS20596  Lessingia nana W. L. Jepson 1934-5-4 16618 Butte 2 1/2 mi ne Cana Comment
  CAS-BOT-BC341781  Lessingia nemaclada Lowell Ahart 1980-9-10 2643 Butte 7 miles east of Milsap Bar 1200 Comment
  CHSC94563  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  JEPS46191  Leucothoe davisiae Duncan Dunning Butte near Inskip (Lassen National Forest); Lassen National Forest Comment
  JEPS113580  Lewisia cantelovii Lowell Ahart 2007-5-16 13894 Butte On the east side of Highway 70, about 150 yards no DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 463 Comment
  SEINET10830261  Lewisia cantelovii Mary Susan Taylor 1980-9-27 Taylor 3342 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC42584  Ligusticum californicum Vernon Oswald 1983-6-22 729 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC105519  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 30 yards west 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
  CAS-BOT-BC436016  Ligusticum grayi R. Carter 1966-6-15 444 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd., ca. 5 yds. off road 1097 Comment
  CHSC106598  Ligustrum sinense L. P. Janeway; B. Castro 2010-6-4 9993 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. 75 Comment
  CDA34704  Lilaea scilloides L. Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  CHSC65643  Limnanthes alba subsp. alba Mark S. Cederborg 1995-4-12 19 Butte Fernandez Land Grant. In drainage on se side of Wilbur Rd ca. 1.9 mi s of Hwy 162, ca. 6 mi sw of Oroville. 44 Comment
  POM311146  Limnanthes alba subsp. alba C. T. Mason 1949-4-23 1252 Butte Butte County: 7 miles S of Oroville in a roadside ditch along the E side of Hwy 24 Comment
  JEPS104300  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  UCSB45759  Limnanthes douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road, 6 miles north on Derrick Road from Table Mt. Road Comment
  UCD22645  Limnanthes douglasii Joseph Laferriere 1982-4-18 2 Butte Table Mountain, 5 miles north of Oroville on Cherokee Road, near creek. 396 Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  UC726864  Limnanthes douglasii subsp. rosea A. A. Heller 1938-3-27 15005 Butte along US Hwy 99E near Cana road junction (n of Chico) Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  SEINET10496785  Linanthus bakeri Lowell Ahart 1985-5-15 Ahart 4984 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UC907828  Linanthus bicolor P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway-up Hunnicut Grade); Hunnicut Grade Comment
  CHSC24766  Linanthus dichotomus P. J. Welch 1976-4-12 17 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and ca. 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  JEPS118329  Linanthus filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  JEPS117685  Linanthus harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  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
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  CHSC51023  Lipocarpha Lowell Ahart 1990-7-15 6566 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC55617  Lipocarpha aristulata L. P. Janeway; C. A. Janeway 1986-10-4 1902 B Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC85158  Lipocarpha aristulata John Dittes 2003-10-8 843 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC28131  Lithophragma bolanderi J. D. Jokerst 1979-4-28 207 Butte N bank of Rock Crk., 150 yds nw of intersection Rck Crk. Rd. and Cohasset Hwy. 121 Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  CHSC65466  Lithophragma bolanderi Vernon Oswald 1984-4-9 1129 Butte Feather Falls Trail, 1.7 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  SEINET10483079  Lithophragma trifoliatum Mary Susan Taylor 1980-4-6 Taylor 2435 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
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC86855  Logfia filaginoides L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.0 km southwest of mouth of Frey Creek. 299 Comment
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC44472  Logfia gallica Lowell Ahart 1988-5-12 5998 Butte Field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC91001  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  UC171399  Logfia gallica A. A. Heller 1913-10-7 11148 Butte 8 mi n Oroville; Table Mountain Olive Ranch 121 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  CHSC4377  Lolium multiflorum M. M. Gregg 1966-5-21 171 Butte NW corner of CSC campus around the artificial ski jump. Chico. Comment
  CHSC45107  Lolium perenne Lowell Ahart 1988-9-4 6175 Butte Along the north side of a branch of Last Chance Creek, east of the dirt road, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  CHSC42614  Lomatium macrocarpum Vernon Oswald 1985-5-2 1746 Butte Concow Rd. 0.1 mi s of its jct. with Ponderosa Way. 975 Comment
  CHSC38739  Lomatium utriculatum Vernon Oswald 1983-3-6 119 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  POM78230  Lomatium vaginatum C. C. Bruce 1897-03 2053 Butte Little Chico Comment
  CAS-BOT-BC240691  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  SEINET10465044  Lonicera japonica Mary Susan Taylor 1975-6-22 Taylor 784 Butte California State University, Chico, campus. 61 Comment
  SEINET10970287  Lotus Mary Susan Taylor 1982-6-24 Taylor 4734 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  RSA253373  Lotus grandiflorus var. macranthus A. A. Heller 1938-5-28 15125 Butte On the Feather River Highway 25 miles from Oroville. Comment
  SFV11544  Lotus humistratus M. L. Vincent 1960-4-15 s. n. Butte Near Feather River Bridge, below Paradise. Comment
  UC171019  Lotus incanus H. M. Hall 1913-5-27 Butte Stirling City Sierra Nevada Mountains 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
  UC600399  Lotus oblongifolius var. oblongifolius H. F. Copeland 1930-7-21 1315 Butte Butte Creek Jonesville 1524 Comment
  UC204727  Lotus wrangelianus A. A. Heller 1914-5-28 11238 Butte 8 mi n Oroville Comment
  CHSC112877  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC112879  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  CHSC35656  Lunaria annua R. E. Preston 1982-4-20 243 Butte N bank of Chico Creek, ca. 100 yds w of Warner St bridge, Chico. Comment
  CHSC49842  Lupinus affinis Vernon Oswald 1990-4-4 4147 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. From a small group of plants near the edge of the cement launching ramp, slightly below the high-water line of the lake. 271 Comment
  SEINET10870942  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22n,r4e,sec.1 se 1/4 se 1/4. Pulga quad. On serpentine on rocky ridge, both Side of ponderosa way (rim road), 6.1 miles n of jarbo gap on hwy 70. With Pteridium aquilinum, calocedrus decurrens 823 Comment
  UC725344  Lupinus albicaulis A. A. Heller 1941-5-22 16138 Butte on State Highway #24 about a half mi w Jarboe Pass; w of Jarboe Pass Comment
  CHSC35985  Lupinus albicaulis var. shastensis J. D. Jokerst 1982-5-16 1571 Butte Ponderosa Way 0.5 mi N of its jct, with Lower Forbestown Road. 731 Comment
  CHSC23674  Lupinus albifrons M. S. Taylor 1976-4-27 1098 Butte On n side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC90029  Lupinus albifrons Keith Bunney 1991-4-21 2 Butte West side of Hwy 162, 2.9 mi ne of Oroville. 121 Comment
  UCD105915  Lupinus albifrons A. A. Heller 1915-3-25 11782 Butte southwest of the Marysville Buttes. Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  SEINET11071667 Image available Lupinus albifrons H. E. Brown 1897-5-1 Butte near Clear Creek Comment
  CAS-BOT-BC201352  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CAS-BOT-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  CAS-BOT-BC196244  Lupinus albifrons var. eminens Lowell Ahart 1967-4-12 s.n. Butte Bidwell Bar 609 Comment
  CHSC34683  Lupinus apertus M. S. Taylor; D. Dunn 1981-5-21 3781 Butte E side of rd 23N02, ca. 2 mi e of Rag Dump, ca. 6 air mi ne of Magalia. 1188 Comment
  SEINET10484603  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23n,r5e,sec.18 nw 1/4. Pulga sw quad. Corolla pink. E side of road 23no2, ca 2 Miles e of rag dump, ca 6 air mile ne of magalia. Yellow pine forest, granitic Soil. Assoc.; Arctostaphylos truei, claytonia rubra 1189 Comment
  CHSC36149  Lupinus bicolor C. W. Dawson 1978-4-2 13 Butte 2.1 mi. ne of junction of Cal. Hwy. 99 and Pentz Rd. se side of roadway. 60 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  CHSC924  Lupinus bicolor var. tridentatus P. Delaplane 1965-4-6 29 Butte Fairly abundant along side of Cohasset Rd. 3/4 mi above turnoff to Richardson Springs Rd. Chico. 243 Comment
  JEPS119589  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  HSC58937  Lupinus densiflorus var. lacteus G. L. Clifton 1975-5-29 4195 Butte Near Pulga, close to Belden 488 Comment
  JEPS87384  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  CAS-BOT-BC323941  Lupinus latifolius subsp. longipes M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  POM27145  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2437 Butte Doe mill 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
  CHSC46561  Lupinus lepidus var. sellulus V. Oswald 1989-7-12 3847 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  UC726687  Lupinus microcarpus var. densiflorus A. A. Heller 1942-4-26 16437 Butte s of the Oregon City Road junction Table Mountain (Table Mountain) Comment
  CHSC90191  Lupinus nanus Eric M. Haney 1989-4-21 1 Butte Found in Bidwell Park, ca. 100 m e of Horseshoe Lake. 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
  CHSC38509  Lupinus nanus var. latifolius Vernon H. Oswald 1983-3-9 141 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC113126  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 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC43386  Lupinus nanus var. vallicola Lowell Ahart 1978-5-2 1711 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC92538  Lupinus pachylobus L. P. Janeway 2005-3-10 8347 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10491010  Lupinus vallicola subsp. vallicola Taylor 1981-5-21 Taylor 3762 Butte Paradise se quad. S side of lake concow, ca. 5 Mi e of paradise. Associates: Viola lobata. 640 Comment
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  CAS-BOT-BC320471  Luzula comosa var. laxa Peter F. Zika 2011-7-6 25530 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CAS-BOT-BC436644  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC64054  Luzula comosa var. laxa S. C. Morey 1983-8-4 706 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC33727  Luzula comosa var. subsessilis M. S. Taylor 1981-3-12 3398 Butte Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. 883 Comment
  CHSC116997  Luzula macrantha Lowell Ahart 2016-6-4 20927 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC28659  Luzula macrantha J. D. Jokerst 1979-3-31 196 Butte S. of little Chico Cr., at it's intersection with the W edge of section 12. Comment
  JEPS115962  Luzula macrantha Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC107570  Luzula parviflora Lowell Ahart 2011-8-19 17642 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
  CHSC34183  Luzula parviflora L. Ahart 1981-9-15 3166 Butte Along the banks of French Creek, below the swamp and where the rd forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  UC1609042  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  UCD124965  Lycopus americanus L. E. Hazeltine 1916-6-24 s.n. Butte Chico. Comment
  CHSC46307  Lythrum californicum Vernon Oswald 1985-6-5 1810 Butte River Rd. 0.5 mi sw of its jct. with Chico River Rd. 36 Comment
  CHSC97205  Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC60994  Lythrum tribracteatum Lowell Ahart 1993-6-13 6958 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC23696  Madia elegans M. S. Taylor 1976-5-5 1108 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. Comment
  JEPS115874  Madia elegans Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC99309  Madia exigua Lowell Ahart 2008-5-21 14769 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SD122590  Madia exigua Lowell Ahart 1984-6-8 4666 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  SFV11421  Madia exigua M. L. Vincent 1963-6-10 419 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC101764  Madia gracilis Lowell Ahart 2009-5-23 15722 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
  CHSC78235  Madia gracilis Lowell Ahart 2000-6-29 8543 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
  CHSC47078  Maianthemum racemosum R. A. Schlising; L. Janeway 1988-7-1 4555 Butte NE part of county, NE of Snow Mountain. Comment
  POM182758  Maianthemum racemosum subsp. amplexicaule Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET10971246  Malacothrix californica Mary Susan Taylor 1974-4-30 Taylor 192 Butte Along Cohasset Road, NE of Chico. Comment
  CDA13274  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13122 Butte Plumas National Forest; N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC44376  Malacothrix floccifera Lowell Ahart 1988-6-21 6050 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/ 271 Comment
  HSC94149  Malacothrix floccifera G. Fred Hrusa, T. D. Wilfred 1996-7-9 13185 Butte Approx 1 mi. on 22N89. Immediately S of Rogers Cow Camp on Hwy. 162. 1150 Comment
  SEINET10475283  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4723 Butte T22N R4E sw/se sec 14. Pulga SW quad. E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. 2800 ft. 853 Comment
  CHSC1035  Malva nicaeensis F. Johnson 1937-6-4 Butte Chico. 57 Comment
  CHSC118889  Marah fabacea Robert A. Schlising 1963-6-7 2621 Butte Foothills; Cohasset; roadside. Comment
  SEINET10448088  Marah fabacea Mary Susan Taylor 1973-1 Taylor 51 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  SEINET10448097  Marah watsonii Mary Susan Taylor 1980-4-6 Taylor 2437 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
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 Comment
  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
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  UCD136571  Marsilea vestita subsp. vestita M. S. Taylor 1980-7-6 3051 Butte Ca. 1 mile E of Meridian Road, ca. 1.25 miles NE of its junction with Highway 99, ca. 8 miles N of Chico. 67 Comment
  CHSC46112  Matricaria occidentalis J. D. Jokerst 1982-4-29 1541 Butte Grey Lodge Waterfoul Management Area. Along the edge of Rutheford Rd. where it turns 90 degrees to the north in the center of section 14. Comment
  CHSC3343  Maytenus boaria Robert L. Smith 1966-3-1 11 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UCD107841  Medicago polymorpha Robert Kehlor 1951-4-14 33 Butte J. M. Kehlor Ranch, 6 1/4 miles east of Oroville. Comment
  UCD107844  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  JEPS107779  Medicago praecox Lowell Ahart 2005-5-2 11779 -A 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
  SEINET10452592  Medicago praecox Lowell Ahart 1983-4-10 Ahart 3924 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
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  SEINET10599356  Melica californica Lawrence P. Janeway 1995-6-19 Janeway 4797 Butte Cascade quad. T21N R6E S25 SE1/4 NW1/4. About 0.5 mi east of the western end of Jackson Ranch Ridge. Open areas in open ponderosa pine dominated mixed conifer forest. 1097 Comment
  SEINET11688662  Melica californica K. R. Pearson 1983-1 19 Butte ca 200 m NNE of Chico Creek, 2 km NW of diversion dam, 3 km NNE of Chico 150 Comment
  CHSC87955  Melica geyeri Lowell Ahart 2004-6-22 11110 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CHSC101462  Melica harfordii L. P. Janeway; Sarah Starkey 2009-7-13 9857 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  UC600754  Melica subulata H. F. Copeland 1931-6-9 Butte near junction of Jones Creek and Willow Creek (Jonesville); Jonesville 1524 Comment
  CHSC80643  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte On the south side of Biggs-Princeton Road, about 1/2 mile east of Butte Creek, about 8 miles west of Biggs. 21 Comment
  JEPS119619  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte 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. 50 Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CHSC3442  Micranthes integrifolia Judy Potter 1966-3-7 Butte Hill east of Honey Run Bridge. Comment
  CHSC92569  Micranthes integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC429203  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  SD116532  Micropus californicus var. californicus Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3279 Butte Peter Ahart Ranch; 2.5 miles northnortheast of Honcut. 29 Comment
  CAS-BOT-BC348699  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  POM34442  Microseris lindleyi C. C. Bruce 1897-05 1837 Butte Humboldt Road Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  UCD122217  Mimulus aurantiacus B. Jackson 1968-3-4 16 Butte taken ca. 7 1/4 mi. E. of Chico (from intersection of Hwy's 32 and 99) on Hwy 32 along S. side of road. 121 Comment
  SEINET10830523  Mimulus cardinalis Mary Susan Taylor 1975-6-25 Taylor 798 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
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  JEPS119594  Mimulus glaucescens Lowell Ahart 2012-4-9 17850 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
  RSA309183  Mimulus glaucescens Robert F. Hoover 1936-5-21 1158 Butte 3 miles north of Chico Comment
  UC1023693  Mimulus glaucescens F. W. Pennell and A. A. Heller 1940-6-4 25667 Butte above Richardson Springs 182 Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area 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
  JEPS9651  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  UC426957  Mimulus moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  UC886302  Mimulus moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows 1280 Comment
  CDA13309  Mimulus moschatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13155 Butte Sierra Nevada; Jordan Creek on W side of bridge over Marble Creek on USFS N60. Comment
  CHSC38705  Mimulus moschatus Vernon Oswald 1983-5-27 565 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC44718  Mimulus moschatus R. Banchero 1980-6-26 267 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  UC175540  Mimulus torreyi A. A. Heller 1913-6-7 10799 Butte near Stirling 1074 Comment
  POM181509  Mimulus tricolor H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  CHSC93500  Minuartia californica Lowell Ahart 2006-5-8 12590 Butte Margins of a vernal pool, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 Comment
  UCD80209  Minuartia californica CNPS SN Foothill Team 2005-5-4 SNFN 0200 b Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  JEPS117141  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  POM101121  Minuartia douglasii C. C. Bruce 1897-06 1958 Butte Fields near Chico. Comment
  CHSC24647  Moehringia macrophylla S. Deaton 1976-4-14 11 Butte NW edge of Feather Falls trail, 1 5/8 mi n of Falls parking lot. 853 Comment
  CHSC63958  Moehringia macrophylla B. Castro; L. P. Janeway, L. Gehrung 1994-4-18 508 Butte On Watson Ridge, on N-facing edge of large knoll. Ca 20 ft uphill from old trail. 1133 Comment
  CHSC116635  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte On both sides of Swedes Flat road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC113121  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC42118  Mollugo verticillata Lowell Ahart 1986-11-14 5478 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC65565  Monardella breweri subsp. lanceolata R. Banchero 1981-6-16 508 Butte Ca. 0.9 mi SE of Cohasset School. 768 Comment
  SEINET10582062  Monardella lanceolata A. Graff 1993-7-23 Graff 342 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC102988  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC79520  Monardella sheltonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13975 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC84159  Monardella sheltonii Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  UC1564772  Monolepis nuttalliana V. Oswald and L. Ahart 1989-8-22 3959 Butte ca. 3.5 mi. (air) s.e. Jonesville (Butte Creek House Meadow on e. side of Humbug Rd., at the corral); Butte Creek House Meadow 1767 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  SEINET10929037  Montia spathulata var. tenuifolia Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4859 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC260541  Muhlenbergia filiformis Clarence R. Quick 1963-7-16 63 54 b Butte Section Corner Meadow, E of Pulga, Feather River Canyon 1463 Comment
  CHSC113475  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC45424  Myosurus minimus Lowell Ahart 1971-4-13 71 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC29221  Myosurus minimus subsp. minimus M. S. Taylor; J. D. Jokerst 1980-3-28 2398 Butte In vernal pool, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  CHSC46103  Myosurus minimus subsp. minimus J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1540 Butte Grey Lodge, north side of Rutheford Rd, ca. 100 meters West of Pennington Rd. Comment
  CHSC61920  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte Pond, on the north side of Grubbs Road, about 4 miles east of Palermo. 152 Comment
  CHSC46875  Myriophyllum spicatum Vernon Oswald 1989-9-6 3986 Butte West end of West Liberty Rd along the n boundary of Gray Lodge Wildlife Area. 19 Comment
  CDA5314  Myriophyllum spicatum L. Ahart 2001-6-3 8749 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  POM312985  Najas graminea H. L. Mason, Verne Grant 1946-8-15 13047 Butte #833 Irrigation Ditch, near caretaker s house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC42355  Nama lobbii Lowell Ahart 1987-5-22 5685 Butte A little north of the dirt county road, Lumpkin Ridge Road, about 4 miles northeast of Feather Falls. 1280 Comment
  SD4132  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville 1600 Comment
  CHSC88162  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  CAS-BOT-BC515978  Narthecium californicum Lowell Ahart 1984-7-19 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City 1750 Comment
  SEINET10832615  Navarretia Mary Susan Taylor 1978-7-19 Taylor 1789 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CHSC42498  Navarretia capillaris Lowell Ahart; Vern Oswald 1987-6-10 5746 Butte Around a meadow, at Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  UC426936  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  CHSC116984  Navarretia divaricata subsp. vividior Lowell Ahart 2016-6-4 20938 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC33252  Navarretia filicaulis M. Banchero 1979-9-2 28 Butte 6 mi NE Forest Ranch on Hwy 32; on roadside fill. Comment
  UC177516  Navarretia filicaulis H. M. Hall 1914-7-31 9824 Butte Forest Ranch, Humboldt Road Sierra Nevada Mountains Comment
  UC70271  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico ((= near Cana)) Comment
  JEPS94306  Navarretia leptalea subsp. bicolor Lowell Ahart 1997-8-1 7781 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  JEPS107892  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  CHSC91120  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  CHSC27502  Navarretia viscidula subsp. purpurea Robert A. Schlising 1978-6-10 3288 Butte Bidwell Park, Chico, near end of paved road at golf course and old rifle range. Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD123941  Nemacladus interior M. Vincent 1968-6-10 843 Butte 2/10 mile north of Cresta Power Station. Comment
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  JEPS107354  Nemophila menziesii var. menziesii Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  CHSC50550  Nemophila parviflora var. austiniae Vernon Oswald 1990-7-3 4345 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC40779  Nemophila pedunculata Lowell Ahart 1985-5-1 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 35 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  UCD137748  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte N. side of Nelson West Rd., just east of Chico-Butte City Road, dodge Land. Comment
  CHSC23671  Odontostomum hartwegii M. S. Taylor 1976-4-27 1081 Butte Ca. 50 ft e of Cohasset Hwy, ca. 3 mi n of Chico. 60 Comment
  CHSC108847  Oemleria cerasiformis Lowell Ahart 2012-3-2 17768 Butte About 40 yards east of the Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  CHSC93086  Olea europaea L. P. Janeway 2006-2-5 8555 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; between North Rim Trail and the northern boundary fence, 650 m northeast of the upper high-power lines, about 50 m southeast of the fenceline. 283 Comment
  CHSC96316  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CAS-BOT-BC499774  Orobanche californica subsp. grayana H. F. Copeland 1930-7-30 1380 Butte Jonesville 1524 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
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  POM252807  Orthocarpus hispidus A. A. Heller 1938-7-20 15287 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  POM196027  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  CHSC50311  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail, ca. 0.4 mile north of the trailhead, ca. 2 miles north of the town of Feather Falls. 701 Comment
  JEPS87150  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  UCD138167  Ottelia alismoides T. C. Fuller 1977-9-20 2334 Butte west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. Comment
  RSA724822  Oxypolis occidentalis L. Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  SEINET10454532  Oxypolis occidentalis Mary Susan Taylor 1977-7-15 Taylor 1407 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CHSC90964  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  JEPS127017  Parentucellia viscosa Lowell Ahart 2016-5-24 20873 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  JEPS110515  Paspalum distichum Lowell Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  CHSC39060  Pedicularis attollens Robert A. Schlising 1982-8-1 4369 Butte N part of county, E of Inskip at Jones Meadow. 1853 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  UC177581  Pedicularis attollens H. M. Hall 1914-7-22 9771 Butte near Jonesville (on Willow Creek); Willow Creek 1554 Comment
  SEINET10549210  Pedicularis semibarbata Mary Susan Taylor 1978-6-24 Taylor 1647 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SEINET10529788  Pellaea andromedifolia Mary Susan Taylor 1980-3-30 Taylor 2411 Butte Upper Bidwell Park, Chico. 244 Comment
  SEINET10932921  Pellaea mucronata Mary Susan Taylor 1981-5-15 Taylor 3733 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
  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
  UC406903  Penstemon azureus var. angustissimus David D. Keck 1928-6-16 451 Butte 1.5 mi s Berry Creek Inn; Sierra Nevada, s of Berry Creek Inn 609 Comment
  UC436310  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  CHSC26686  Penstemon gracilentus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1485 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  SD4575  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville, open damp stony ground 1950 Comment
  RSA407922  Penstemon heterophyllus subsp. purdyi L. Ahart 1984-6-8 4679 Butte Along the dirt road near the water tower, above the generator, ca. 1 mile E of Ponderosa Dam, ca. 2 miles N of Forbestown. 475 Comment
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  CHSC1866  Penstemon heterophyllus var. purdyi L. Oliver; D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  JEPS118483  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  RSA109280  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  CHSC30080  Penstemon newberryi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3217 Butte Humboldt Peak on the top and w side along the trail. 2154 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  CHSC42022  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC69056  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte On the north side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  RSA443117  Penstemon personatus L. Ahart, P. Ahart 1984-7-19 4761 Butte About 0.5 mile east of Bald Mountain, about 5 miles NE of Stirling City. 1900 Comment
  UC1602332  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte on gravel bar by Butte Creek (Jonesville); , Jonesville 1500 Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  CHSC28892  Pentagramma triangularis M. S. Taylor 1979-4-5 1991 Butte Millsap Bar Campground, ca. 9 mi ne of jct Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC30015  Pentagramma triangularis subsp. semipallida L. Ahart 1980-5-11 2243 Butte About 1/4 mi s of Kunkle Reservoir, ca. 3 mi se of Paradise. 500 Comment
  CHSC31464  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-1-5 3368 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC32689  Pentagramma triangularis subsp. semipallida M. S. Taylor; L. Hanson 1981-3-16 3408 Butte E side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  CHSC63691  Pentagramma triangularis subsp. semipallida Lowell Ahart 1994-10-9 7559 Butte On the north side of the poor road that hoes from Milsap Bar to Mountain Spring House, about 1 mile west of Mountain Spring House and the paved road, about 8 1/2 (air) miles north and 1 1/2 miles east of Feather Falls. 1158 Comment
  CAS-BOT-BC77079  Pentagramma triangularis subsp. triangularis John Thomas Howell 1962-6-16 37618 Butte Sierra Nevada - Nelson Bar 213 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
  JEPS104149  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 309 Comment
  CHSC40308  Perideridia lemmonii Lowell Ahart 1985-8-11 5160 Butte Along the south side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10454550  Perideridia lemmonii Lowell Ahart 1985-8-11 Ahart 5160 Butte Peter Ahart Ranch about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10454551  Perideridia lemmonii Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5112 Butte About 8 miles north-east of Feather Falls. Comment
  CHSC96324  Perideridia parishii subsp. latifolia L. P. Janeway 2006-8-12 8842 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  POM161669  Perideridia parishii subsp. latifolia E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  RSA459082  Perideridia parishii subsp. latifolia M. B. Dunkle 1931-8-12 2624 Butte Paradise Valley Comment
  JEPS120019  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC55244  Persicaria hydropiperoides Lowell Ahart 1991-10-14 6715 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC418858  Persicaria hydropiperoides Lowell Ahart 1982-8-22 3748 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC110315  Persicaria lapathifolia B. Castro 2006-8-10 1599 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western cnal siphon in Cherokee Canal. On E side of canal at dirt road crossing the canal. 35 Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  JEPS114739  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS117223  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville Comment
  CHSC50108  Phacelia corymbosa Vernon Oswald 1990-4-24 4172 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. 277 Comment
  CHSC101318  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
  CHSC84912  Phacelia egena Janice Morris 1995-4-24 93 Butte Ca. 1/4 mi. n of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  RSA133567  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-27 344 Butte Along Feather River highway about 16 miles northeast of Oroville. Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  SEINET5520518  Phacelia imbricata S. Dean 1979-4-24 s.n. Butte Highway 70, Feather River Canyon, approximately 20 miles from Oroville 1067 Comment
  CHSC46199  Phacelia purpusii L. P. Janeway 1988-6-16 2802 Butte Southeast-facing outcrop above Butte Cr; along road in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  RSA718394  Phacelia purpusii L. Ahart 2006-7-16 12962 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  CHSC6661  Phalaris caroliniana Marilyn Lee 1968-4-19 141 Butte Table Mt., ca 3/7 mile W. of Cherokee Road. Comment
  CAS-BOT-BC265954  Phalaris minor Lowell Ahart 1981-5-16 2802 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley, Sierra Nevada 35 Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC135099  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  POM90662  Physocarpus capitatus C. C. Bruce 1897-05 1812 Butte Little Chico. Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC82229  Pilularia americana Lowell Ahart 2002-4-14 9482 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  UCD136789  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte In Valley Grassland just E of Chico. NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 68 Comment
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  CAS-BOT-BC78448  Pinus contorta subsp. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville 1524 Comment
  UC398883  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  UC2026870  Pinus rigida Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18268 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CHSC39520  Piperia elongata Lowell Ahart 1983-6-12 4051 Butte About 1 mile south of Crystal hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC79625  Piperia transversa G. F. Hrusa; T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 820 Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CDA38261  Piptatherum miliaceum G. F. Hrusa, S. Dubiel 2012-9-9 18509 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  CHSC98915  Piptatherum miliaceum L. P. Janeway 2007-12-11 9221 Butte Northern Sierra Nevada Foothills. Flats on top of bluffs along east side of Feather River between Fish Barrier Dam and Thermalito Diversion Dam. 58 Comment
  CHSC111405  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CHSC109072  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC6054  Pistacia terebinthus M. MacArthur 1968-4-17 197 Butte In lawn between LS bld. and Administration bld., Chico State College 60 Comment
  CHSC43592  Pistacia vera Vernon Oswald 1987-4-29 2357 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10529834  Pityrogramma triangularis Mary Susan Taylor 1974-4-30 Taylor 199 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10932922  Pityrogramma triangularis Mary Susan Taylor 1980-4-1 Taylor 2425 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET10529967  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1939 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
  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
  POM287609  Plagiobothrys Lyman Benson 1935-3-27 6356 Butte U.S. 99E, Gridley. 30 Comment
  CHSC29739  Plagiobothrys austiniae J. D. Jokerst 1980-4-17 595 Butte Top of North Table Mt. In drainages and edges of vernal pools. 441 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
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  SEINET10497373  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 Ahart 4590 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC116716  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 2016-5-24 20857 Butte West side 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
  SBBG28845  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte W of Wick's Corner N of Oroville Comment
Read comments
Sep 22 2013
  UC1303133  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte 4 mi e Chico Comment
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  UC480660  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte hogwallow near head Willow Creek; Jonesville, head Willow Creek Comment
  CHSC29051  Plagiobothrys leptocladus R. A. Schlising 1980-4-14 3561 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; at dried margins of pools that contained standing water in winter. Comment
  CHSC46251  Plagiobothrys leptocladus Vernon Oswald 1989-4-20 3749 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), on the ranch road ca. 0.3 mi n of the main gate at Gridley-Colusa Hwy. 18 Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  SEINET10497552  Plagiobothrys nothofulvus Mary Susan Taylor 1973-1 Taylor 37 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  CHSC103692  Plagiobothrys shastensis Lowell Ahart 2010-5-7 16619 Butte On rock outcrop, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC35067  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4012 Butte S of Oroville along Hwy 70, S of Baggatt Road, along highway. Comment
  UC179610  Plagiobothrys stipitatus A. A. Heller 1914-5-30 11470 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  UC78200  Plagiobothrys stipitatus R. M. Austin Apr 1896 626 Butte Adobe Swales Butte Creek Comment
  CHSC35052  Plagiobothrys stipitatus var. micranthus R. Schlising; R. Banchero 1981-5-19 4049 Butte NW of Oroville along Cottonwood Road, 0.5 mile E of jct with Hwy 99. In roadside ditch. 41 Comment
  CHSC51101  Plagiobothrys stipitatus var. micranthus J. Monelo 1990-3-17 20 Butte On n side of Skyway, ca 7 mi e of Hwy 99 and ca 5 mi n of Paradise. 152 Comment
  CHSC65896  Plagiobothrys stipitatus var. micranthus Vernon H. Oswald 1996-4-20 7407 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS114983  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte about 350 yds SW of the cemetery, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC103747  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC58262  Planodes virginica Lowell Ahart 1992-4-17 6747 Butte In a rice field, on the east side of Goodspeed Watt Road, about 1 1/4 miles south of the Butte City Highway. 30 Comment
  CDA6600  Plantago coronopus L. Ahart 1998-7-1 8030 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
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  JEPS98424  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte 5 air mi SW of Oroville (edge of a poor dirt rd, S side of the access rd to boat ramp at the Thermolito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CHSC109178  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte On the bottom and sides of a small vernal pool, 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. 351 Comment
  CHSC116698  Plantago elongata Lowell Ahart 2016-5-15 20836 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 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
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC25444  Plantago major Hayes; Warner 1977-9-11 81 Butte Exactly 9.0 mi from the junction of the Butte Meadows Rd (Humboldt Rd) with Hwy 32. 1249 Comment
  CHSC31780  Plantago major L. Ahart 1978-8-30 1801 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  JEPS114771  Plantago major Lowell Ahart 2008-7-23 15145 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS102499  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) SW of Oroville. 42 Comment
  CHSC27183  Platycladus orientalis P. Moyer 1971-10-8 36 Butte W side library, CSUS campus. 60 Comment
  CHSC109100  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  RSA754580  Plectritis ciliosa subsp. insignis L. Ahart 2009-4-22 15604 A Butte S side of Guardians Trail, S of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC38754  Plectritis macrocera Vernon Oswald 1983-3-5 115 Butte Upper Bidwell Park, on the north rim at a level w of Horseshoe Lake. 128 Comment
  POM197072  Plectritis macrocera subsp. grayi H. F. Copeland 1928-4-3 63 Butte Canyon of Butte Creek. Comment
  CAS-BOT-BC255065  Poa compressa Lowell Ahart 1989-5-28 6286 Butte S of Oregon Gulch Road, about 0.5 miles N of the Cementary, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  UC1586584  Poa howellii Vernon H. Oswald and Lowell Ahart 1991-6-5 4643 Butte ca 1.5 air mi nw Platte Mt Lookout (dirt rd to Minnie Ha Ha Mine on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 670 Comment
  RSA700237  Poa pratensis L. Ahart 2004-7-23 11304 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, bout 1.5 miles (air) west of Philbrook Reservoir Dam., About 3 3/4 miles (air) southeast of Butte meadows. 1457 Comment
  CHSC49568  Poa secunda subsp. secunda Vernon Oswald; Lowell Ahart 1987-5-14 2395 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  CHSC59850  Poa secunda subsp. secunda R. E. Preston 1982-3-6 187 Butte At boundary of Upper Bidwell Park, n of Horseshoe Lake, Chico. 188 Comment
  UCD91669  Poa secunda subsp. secunda P. B. Kennedy 1914-5-8 s.n. Butte Clear Creek, Paradise Grade. Comment
  CHSC37340  Poa sierrae L. Ahart 1980-5-29 2355 Butte Along the edge of the dirt road, near Jordan Creek, ca. 2 1/2 mi ne of the Oroville-Quincy Hwy, ca. 5 mi ne of Mt. House. 1100 Comment
  CHSC33851  Pogogyne zizyphoroides Don Kroessig 1979-4-16 1 Butte On the e side of Hwy. 149, 1.3 mi. n of intersection with Hwy. 70, nw of Oroville. 76 Comment
  UC726650  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte on US Highway 99E, near the Cana Road. Hartweg got it in this neighborhood, in Valle Sacramento. Comment
  SEINET10936260  Polygala cornuta Mary Susan Taylor 1981-6-7 Taylor 3859 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC112725  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CAS-BOT-BC109137  Polygonum bidwelliae C. R. Quick 1951-6-5 51 -87 Butte 5 miles northeast of Chico, Deer Creek road. Comment
  UC1259773  Polygonum bidwelliae Lowell Ahart 1979-5-7 Butte ca 1/2 mi n Kunkle Reservoir (ca 1/4 mi of the Pentz-Magalia Hwy, 2 1/2 mi se of Paradise) 472 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  CHSC39134  Polygonum douglasii subsp. douglasii R. A. Schlising; K. Tarp 1983-8-12 4434 Butte N part of county, road to Philbrook Reservoir, at West Branch of the Feather River. Roadside, in the open. Comment
  CHSC42027  Polygonum douglasii subsp. douglasii Lowell Ahart 1986-8-15 5390 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CHSC94023  Polygonum douglasii subsp. spergulariiforme R. D. Fischer 2005-9-5 670 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek on the dry, bare, gravelly soil of an old road bed. 1737 Comment
  UC1509657  Polygonum hydropiper L. Ahart 1982-10-6 3846 Butte ca 3 mi ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  UC1562373  Polygonum hydropiper Lowell Ahart 1990-6-16 6521 Butte along creek about 1/2 mi sw Enterprise Bridge across lake (below high-water line of lake); Lake Oroville, McCabe Creek 243 Comment
  RSA795242  Polygonum lapathifolium L. Ahart 2011-8-17 17628 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 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC39131  Polygonum minimum R. A. Schlising; R. Banchero 1980-7-14 3904 Butte N end of county, N of Snag Lake. 1731 Comment
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  SEINET10479671  Polygonum phytolaccifolium Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5118 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  SEINET10479672  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 Ahart 6709 Butte Along the edges of Wildcat Creek, about 2 miles northwest of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles northeast of Coyote Gap. Yellow Pine Forest. T23N R6N NE/S30. 1219 Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC39819  Polypodium calirhiza Ruby Gist 1935-4-26 Butte Fern Banks. 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
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS94693  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC233061  Polypogon interruptus John Thomas Howell 1951-8-19 s.n. Butte Near Pulga Comment
  CDA32000  Polypogon interruptus L. Ahart 2008-5-3 15786 Butte Along a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest 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. Comment
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET10602405  Polypogon interruptus Lowell Ahart 1990-5-25 Ahart 6489 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  SEINET11665625  Polypogon interruptus Unknown 1977-1 1365 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC207679  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte near Butte creek between Durham and Nelson Comment
  SEINET10658297  Polypogon maritimus Henegar 1969-5-9 HENEGAR 54 Butte 4 m n of Highway 162 on road Z, found along road side. Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  CHSC6741  Polypogon monspeliensis V. Hagaman 1968-5-3 510 Butte Bare Hole, Bidwell Park. Comment
  UC1549529  Polystichum imbricans subsp. imbricans Lowell and Peter Ahart 1984-5-28 4648 Butte ca. 16 mi ne Oroville (ca. 1 mi ne of West Branch Bridge, ca. 2 mi s of Old Yankee Hill) 450 Comment
  CAS-BOT-BC76654  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 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
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  UC1100069  Potamogeton nodosus Herbert L. Mason, Verne Grant 1946-8-14 13042 Butte Butte Sink Comment
  CHSC40329  Potentilla glandulosa Lowell Ahart 1985-5-15 4995 Butte On the sides of a stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  SEINET11906804  Potentilla glandulosa var. nevadensis L. S. Rose 1939-1 39234 Butte Strawbery Valley, 1219 Comment
  SD2236  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC64615  Primula suffrutescens V. Oswald; L. Ahart 1988-7-29 3646 Butte Ca. 5 mi. (air), se. of Jonesville on the ridge running eastwards from the peak of Snow Mts. 2103 Comment
  SEINET10498365  Prunella vulgaris subsp. lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4067 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC775  Prunella vulgaris var. lanceolata M. Underhill 1952-7-2 Butte 609 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  UCR133591  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville 1524 Comment
  SEINET10937252  Prunus emarginata Mary Susan Taylor 1976-4-4 Taylor 1063 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC44886  Pseudobahia heermannii Lowell Ahart 1979-4-15 1078 Butte Along the north side of Swedes Flat Road, near the bridge across Rocky Honcut Creek, about 6 miles north of Bangor. 457 Comment
  CHSC82272  Pseudobahia heermannii R. A. Schlising 1980-3-24 3526 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC100520  Pseudognaphalium luteoalbum Lowell Ahart 2008-11-4 15399 Butte On the west side of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC31461  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte In seep, ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC97728  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 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
  CHSC39276  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte Slide area along the dirt road, about 1/4 mile west of Milsap Bar. about 25 miles north-east of Oroville. 500 Comment
  CAS-BOT-BC357589  Pseudognaphalium stramineum Lowell Ahart 1980-5-4 2184 Butte Thermalito 65 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC65446  Pseudognaphalium thermale Vernon Oswald 1987-7-16 3121 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
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC35075  Pterospora andromedea R. A. Schlising 1980-7-25 3919 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC60976  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek's Reservoir. 1188 Comment
  CHSC45956  Pterostegia drymarioides Lowell Ahart 1974-4-7 351 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120049  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Tables 12, Lower Bidwell Park, Chico. Comment
  CHSC110840  Pyrola aphylla David Isle; Ana Mendez 1989-7-3 f 2009 Butte Mendocino Natl. Forest-North Coast Ranges Briscoe Creek Watershed. N sslope of Noel Slprings Ridge, 0.9 mi NW (up) Clover Creek Rd 20N41 from 20N71/20N41. N of cull deck. 1292 Comment
  CHSC48677  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 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
  JEPS108897  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
  RSA0080631  Pyrola dentata L. Ahart 2006-7-11 12943 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CHSC47412  Quercus Lowell Ahart 1976-9-1 996 Butte On the west side of North Hpncut Creek, Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut. 60 Comment
  RSA134789  Quercus berberidifolia Percy C. Everett, E. K. Balls 1959-10-20 23907 Butte 8.6 miles ne. from Chico along State Hwy. 32, toward De Sabla. 488 Comment
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  CHSC28520  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte At Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC96619  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8680 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  JEPS115710  Quercus kelloggii Lowell Ahart 2009-6-3 15812 Butte On the north edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC104818  Quercus lobata Lowell Ahart 2010-6-12 16803 A Butte North side of the pond and table, 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
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  JEPS57370  Quercus lobata L. R. Heckard 1968-5-31 1932 Butte Bidwell Park Chico Comment
  CAS-BOT-BC104485  Quercus vacciniifolia A. A. Heller 1915-6-10 11957 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC628  Quercus wislizeni M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  UC1135915  Quercus wislizeni var. frutescens J. E. Sowder 1933-8-4 124 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  UC600479  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 Butte Jonesville; swamp 1524 Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  CHSC29054  Ranunculus aquatilis var. hispidulus R. A. Schlising 1980-4-2 3541 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay; in ditches. Comment
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CHSC3847  Ranunculus arvensis L. E. Dunkel 1965-4-20 24 Butte Along Cohasset Road ca. 1/2 mi. n of Chico Municipal Airport entrance gate. 33 Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC29048  Ranunculus bonariensis var. trisepalus R. A. Schlising 1980-4-14 3565 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; in ditch at s end of area. Comment
  SEINET12100195  Ranunculus californicus Unknown 3 s.n. Butte no further locality Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  POM268696  Ranunculus flammula var. ovalis E. B. Copeland 1929-7-29 s.n. Butte Joneville, near Butte Creek 1750 Comment
  CHSC29235  Ranunculus hebecarpus M. S. Taylor 1980-4-1 2424 Butte On bluffs above Covered Bridge and s of Butte Creek, ca. 5 mi e of Chico. 182 Comment
  SEINET10535976  Ranunculus hystriculus Mary Susan Taylor 1981-2-11 Taylor 3382 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  JEPS84920  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  SD129647  Ranunculus muricatus Barbara Ertter, Lowell Ahart 1986-4-13 5888 Butte ca 2 airmiles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch, mostly sheep pasture 29 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
  UC827722  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte 20 mi from Oroville (Feather River Hwy at summit) Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC46847  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 254 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC38048  Raphanus raphanistrum R. E. Preston 1983-1-9 378 Butte On levee of irrigation ditch, w side of Aguas Frias Rd ca. 0.9 mi n of Richvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CAS-BOT-BC59882  Rhamnus ilicifolia Lowell Ahart 1989-5-10 6211 Butte Near a dirt road, about 1/10 mi. nw. of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC30898  Rhamnus ilicifolia M. S. Taylor 1979-3-19 1931 Butte In vicinity of Pulga Bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC46396  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  SEINET13946369 Image available Rhamnus rubra A. A. Heller 1914-1 11404 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC86433  Rhamnus tomentella subsp. tomentella Jenny Marr 1994-6-13 88 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC199713  Rhododendron occidentale Lowell Ahart s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC199744  Rhododendron occidentale var. californicum A. A. Heller 1913-6-7 10800 Butte Near Stirling 1074 Comment
  CHSC82909  Rhynchospora capitellata L. P. Janeway; B. Castro 2002-7-28 7690 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  SBBG28495  Ribes inerme E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  SEINET10482939  Ribes nevadaense Mary Susan Taylor 1978-5-6 Taylor 1626 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CAS-BOT-BC212674  Ribes nevadense Clarence R. Quick 1952-6-29 5293 Butte Near spring, 0.3 mile W of Coyote Gap on Mill Creek Road Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  JEPS27767  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte forest near DeSabla 853 Comment
  CHSC109130  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 400 Comment
  CHSC51253  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-10-3 6612 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC90958  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2005-4-18 11741 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
  JEPS103453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 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
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  JEPS121305  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC94560  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  JEPS124147  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  UC1562370  Rorippa palustris Lowell Ahart 1990-6-16 6516 Butte about 1/2 mi sw Enterprise Bridge (across Lake Oroville); below high water line Lake Oroville 243 Comment
  CHSC50655  Rorippa palustris var. hispida Lowell Ahart 1990-6-16 6516 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC94165  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  POM365846  Rosa bridgesii M. M. Boney 1897-1 1724 Butte [No location information provided.] 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
  JEPS115697  Rosa californica Lowell Ahart 2009-6-19 15942 Butte On dry soil, open area north pond and table, about 50 yards south 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 232 Comment
  CHSC39356  Rosa gymnocarpa L. Ahart; P. Ahart 1983-9-21 4464 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  JEPS115699  Rosa pisocarpa Lowell Ahart 2009-11-19 16542 Butte 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
  SEINET8359729  Rosa pisocarpa Unknown 2007-6-23 19074 Butte Black Bart Road 1.2 miles from lower junction with Forbestown Road, ca 10 air miles east-southeast of Oroville. 655 Comment
  CHSC82367  Rosa rubiginosa Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC51370  Rubus pensilvanicus Vernon Oswald 1990-8-28 4444 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Northeast of the 'swimming hole' at the Boy Scout Camp. 1292 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC35222  Rubus ursinus M. S. Taylor; L. Hanson 1981-5-12 3691 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. Near creek. 853 Comment
  RSA795262  Rubus ursinus L. Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 0.75 air miles west of Highway 32, about 9 air miles northeast of Chico. 198 Comment
  CHSC99328  Rumex acetosella Lowell Ahart 2008-5-12 14761 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  UCD101106  Rumex conglomeratus W. R. Powell 1968-5-6 1480 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  CAS-BOT-BC433478  Rumex dentatus Lowell Ahart 1982-4-29 3393 Butte About 1/2 mile north-west of the sign in station, Gray Lodge, about 12 miles southwest of Gridley 35 Comment
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  SEINET10904513  Rumex pulcher Mary Susan Taylor 1977-7-15 Taylor 1420 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC45580  Sagina apetala Lowell Ahart 1974-4-24 421 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC99010  Sagina apetala Lowell Ahart 2008-5-21 14787 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10537601  Sagina apetala Mary Susan Taylor 1982-4-28 Taylor 4365 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
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 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
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  POM313178  Sagittaria sanfordii H. L. Mason, Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington highway. Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  CHSC21075  Salix exigua var. hindsiana M. S. Taylor 1975-10-3 935 Butte In Sacramento River, ca. 10 mi w of Chico. 36 Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CAS-BOT-BC107965  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  CHSC37756  Salix gooddingii J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1543 Butte Grey Lodge Waterfoul Management Area. Along the road running north of Rutherford Rd. Comment
  SBBG128458  Salix gooddingii L. Ahart 2012-4-3 17803 Butte N bank of N Honcut Crk, Peter Ahart Ranch, ca. 1.25 mi N and 2.75 mi E of Honcut, ca. 12 mi SE of Oroville 38 Comment
  CAS-BOT-BC106937  Salix laevigata Lowell Ahart 1987-5-22 5683 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC40542  Salix lasiolepis J. D. Jokerst; L. Ahart 1984-3-20 1947 Butte Along the edge of Black Bart Rd. 0.5 miles S of its junction with Forbestown Rd. Comment
  SEINET10538854  Salix lasiolepis Mary Susan Taylor 1981-3-24 Taylor 3434 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC42542  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5684 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  RSA31117  Salix lucida subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico meadows. 1220 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CDA3196  Salsola tragus L. Ahart, Vernon Oswald 1999-10-3 8295 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
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  SEINET10940264  Samolus parviflorus Lowell Ahart 1984-7-25 Ahart 4762 Butte Along the wet edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET5735621 Image available Sanguisorba minor Lowell Ahart 1985-1 4958 Butte E branch of Potter Ravine, ca. 2.25 mi N of Oroville Dam.; Oroville Dam 350 Comment
  CHSC31405  Sanicula bipinnata Stephen M. Turek 1980-4-14 6 Butte Ca. 3 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  UC566793  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3720 Butte ne of Oroville (n side of Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  SEINET10454659  Sanicula crassicaulis Mary Susan Taylor 1980-4-18 Taylor 2514 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC33111  Sanicula tuberosa M. S. Taylor 1981-5-5 3618 Butte E side of spur rd off 21N35Y, ca. 0.5 mi se of Feather Falls trailhead, ca. 1 mi n of Feather Falls community. 822 Comment
  CHSC38748  Sanicula tuberosa Vernon Oswald 1983-4-4 258 Butte Upper Bidwell Park, Chico, on the north rim ca. 50 ft e of the turn-around at the end of the North Rim Trail. 414 Comment
  CHSC42670  Sanicula tuberosa Vernon Oswald 1985-4-18 1711 Butte Feather Falls Trail 0.1 mi n of the trailhead at the end of Bryant Ravine Rd. 762 Comment
  UC398939  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville 1550 Comment
  CHSC36298  Saponaria officinalis M. S. Taylor 1982-8-16 4987 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  CAS-BOT-BC436866  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 36 Comment
  CAS-BOT-BC6054  Saxifraga californica Amos Arthur Heller 1914-3-19 11214 Butte Canyon of Big Chico creek 76 Comment
  SEINET10939792  Scandix pecten-veneris Mary Susan Taylor 1981-5-1 Taylor 3589 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  CAS-BOT-BC283624  Schedonorus pratensis John Thomas Howell 1951-6-26 27520 Butte Big Bend Mt 609 Comment
  CHSC24812  Schoenoplectus acutus var. occidentalis E. L. Rilla 1976-9-18 27 Butte Freshwater Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CAS-BOT-BC111371  Schoenoplectus acutus var. occidentalis Lowell Ahart 1982-7-10 3674 Butte Gray Lodge, ca. 13 mi. SW of Gridley, 1/4 mile SE of the Gray Lodge Headquarters 35 Comment
  CHSC58284  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10466946  Scirpus acutus Mary Susan Taylor 1982-4-28 Taylor 4367 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  UC600702  Scirpus diffusus H. F. Copeland 1928-8-17 1072 Butte Jonesville 1524 Comment
  SEINET10938716  Scirpus microcarpus Lowell Ahart 1985-6-30 Ahart 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  SEINET10466954  Scirpus mucronatus Mary Susan Taylor 1978-7-22 Taylor 1848 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC44401  Scutellaria californica Lowell Ahart 1988-6-29 6110 Butte On bridge on Bean Creek Road, where road crosses Bean Creek, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  CHSC74680  Scutellaria californica Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  RSA755770  Scutellaria siphocampyloides L. Ahart 2009-5-30 15808 Butte Southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 437 Comment
  CHSC21279  Scutellaria tuberosa M. S. Taylor 1974-4-20 184 Butte On Cohasset Ridge, ca. 1 mi n of Richardson Springs. 274 Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  UCD101975  Sedella pumila R. J. Goedl 1979-4-16 20 Butte 3.5 miles east of Highway 99 and Chico, 20 feet N of Skyway. 213 Comment
  CHSC116966  Sedum spathulifolium Matthew Forster 2013-4-25 Butte Along 14 Mile House Rd. 472 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  JEPS89349  Senecio Dean W. Taylor 1997-4-9 15967 Butte along Hwy. 70 ca. 2 rd. mi. w. of bridge over the river at Pulga (Feather River Canyon, Plumas Nat'l Forest); Sierra Nevada (nSNF), Plumas Nat'l Forest, Feather River Ca 579 Comment
  CHSC89845  Senecio eurycephalus var. eurycephalus L. P. Janeway; B. Castro 2004-6-13 8135 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
  CAS-BOT-BC363995  Senecio integerrimus var. major Lowell Ahart 1982-5-8 3410 Butte About 1/2 mile south-west of the Forbestown Res. 800 Comment
  JEPS119617  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte In Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC364272  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  UC1070203  Senecio triangularis P. L. Johannsen 1936-7-17 941 Butte 3 mi se Butte Mdws.; Paynes Creek Quad. Comment
  JEPS104835  Sericocarpus oregonensis Dean W. Taylor 1995-8-6 15388 Butte N end Rocky Ridge; 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 Comment
  UCD92745  Setaria pumila E. Wilson 1935-9-1 s.n. Butte Biggs Rice Station. Comment
  CHSC101258  Sherardia arvensis Lowell Ahart 2009-4-17 15547 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
  CHSC29977  Sidalcea asprella Lowell Ahart 1980-5-17 q 2300 Butte About .5 mi SE of Hurleton, slightly E of Oak Grove Cemetery. 600 Comment
  JEPS127019  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  JEPS119893  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CDA36511  Sidalcea calycosa subsp. calycosa L. Ahart 1998-6-3 7964 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC37438  Sidalcea gigantea R. A. Schlising 1982-8-26 4374 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. 865 Comment
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  POM183172  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville. 1524 Comment
  JEPS93900  Sidalcea hartwegii Lowell Ahart 1998-6-9 7992 Butte about 7 air mi n of Oroville (about 300 yards w of the Ione oak tree, w of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD80453  Sidalcea hartwegii CNPS SN Foothill Team 2005-4-13 SNFN 0078 c Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, ca. 85 m south of the Preserve gate entrance. 82 Comment
  SEINET7718632  Sidalcea humilis Unknown Butte Mesa Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  SEINET10480013  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1411 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  UC128807  Silene bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  CHSC31132  Silene laciniata subsp. californica Diane M. Reilly 1980-3-21 1 Butte On road cut, ne side of Dark Canyon Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 487 Comment
  SEINET4853170  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC113213  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte Near 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
  CHSC483  Sinapis arvensis P. Delaplane 1965-3-27 60 Butte In field on W. side of Cactus at intersection of Manzanita, Chico. 30 Comment
  CHSC14096  Sisymbrium officinale L. V. Ritter 1969-4-12 145 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  JEPS115544  Sisymbrium officinale Lowell Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS115623  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  SEINET10546507  Solanum nodiflorum Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5232 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC76346  Solanum rostratum Paul Maslin 1999-7-7 Butte Campus of California State University, Chico; between the Continuing Education building and Big Chico Creek. In flower beds. 59 Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  SEINET10474350  Solidago californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4148 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  CHSC64039  Solidago elongata S. C. Morey 1983-8-4 718 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC66157  Sonchus tenerrimus Vernon H. Oswald; Lowell Ahart 1996-5-27 7670 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CDA26430  Sorbus scopulina C. Browning 1970-9-9 Butte Jonesville. 0 Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 Comment
  CHSC98980  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 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
  JEPS114737  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC98983  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CAS-BOT-BC390601  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  RSA0116393  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  JEPS121989  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of meadow, about 100 yards southeast of Philbrook Road, about 1 air mile west of Philbrook Reservoir. Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  JEPS110395  Spiranthes stellata Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 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
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC44404  Stachys ajugoides var. rigida Lowell Ahart 1988-6-21 6046 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. 271 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  POM17346  Stachys emersonii A. A. Heller, H. E. Brown, A. H. Heller 1902-5-10 5521 Butte Berry Canyon (Near Clear Creek). Comment
  CDA30221  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte Drainage on east side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC52076  Stachys pycnantha B. Castro 1988-6-5 261 Butte Upper Little Chico Ck Cyn. 243 Comment
  UC2055628  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  SEINET10537600  Stellaria crispa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4741 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  JEPS122022  Stellaria longipes subsp. longipes Lowell Ahart 2014-7-4 19555 -A Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  RSA0041908  Stellaria longipes subsp. longipes E. B. Copeland 1931-1 638 Butte Jonesville. 1500 Comment
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  POM219143  Stellaria obtusa H. F. Copeland 1930-7-21 s.n. Butte Jonesville. Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CAS-BOT-BC398214  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC61299  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS124149  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  UC1586423  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald and Lowell Ahart 1990-10-11 4463 Butte about 4 mi s Jarbo Gap (spur road off Dark Canyon Rd, leading to the opening between railroad tunnels No 7 & 8) 335 Comment
  SEINET10506970  Stipa Mary Susan Taylor 1980-4-18 Taylor 2506 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  SEINET11986398  Streptanthus diversifolius S. M. Grossberg 1978-1 10 Butte North Table Mountain, ca 1 mi NNE of Cherokee Rd, 6 mi N of Oroville 381 Comment
  CHSC94104  Streptanthus longisiliquus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 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
  UCD164226  Streptanthus polygaloides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 303 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 314 Comment
  CHSC38054  Streptanthus tortuosus R. E. Preston 1983-5-26 384 Butte Roadside, Hwy 70 ca. 1 3/4 mi SW of Pulga. 548 Comment
  UC856777  Streptanthus tortuosus var. orbiculatus A. A. Heller 1938-4-14 15031 Butte low rock ledges where shallow ravines cut through the lava rock on flat mt. summit Table Mountain Comment
  CDA25189  Streptanthus tortuosus var. suffrutescens L. Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  SEINET11933193  Suaeda nigra Unknown 1983-1 4452 Butte ca 0.12 mi S of the Graylodge Wildlife Refuge HQ, ca 12 mi SW of Gridley 35 Comment
  RSA739732  Swertia albicaulis var. nitida L. P. Janeway, B. Castro 2007-5-6 8975 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  UC878392  Swertia albicaulis var. nitida Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  SBBG5648  Swertia albicaulis var. nitida H. and M. Dearing 1938-6-21 2054 Butte near Lone Pine Lookout, 21 mi N of Chico 1219 Comment
  SEINET10784830  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 Ahart 13889 Butte T22N, R4E, southwest 1/4 Section 21. On dry dark soil, 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. Foothill Woodland. Comment
  CAS-BOT-BC234614  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  SD6581  Symphoricarpos mollis Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC109753  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC40562  Symphyotrichum chilense Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC69667  Symphyotrichum chilense Vernon H. Oswald 1983-6-14 688 Butte Upper Bidwell Park, Chico, beside Yahi Trail E of Brown's Hole. 207 Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  UC426980  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  CAS-BOT-BC98328  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Gray Lodge, SW of Gridley - sides of a deep ditch, about 100 meters north of the Check-in-Station, Gray Lodge, 35 Comment
  POM82504  Tauschia hartwegii C. C. Bruce 1897-05 2061 Butte Near Chico. Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CHSC100907  Taxus brevifolia R. A. Schlising; R. Banchero 1980-6-12 3685 Butte 4.6 miles south of Butte/Tehama County line, along Highway 32. Comment
  UC1348836  Taxus brevifolia R. Cockrell 1938-9-21 8415 Butte Stirling City Comment
  SEINET10471598  Taxus brevifolia Mitzel 1977-4-3 MITZEL 10 Butte Rarely occurs ca 6 m SE of Forest Ranch and 15 yds E of Little Chico Creek. Heavily forested area within mixed coniferous forest. Soil clay loam. 792 Comment
  SEINET11739297  Taxus brevifolia L. Ahart, Ahart, P. 1983-1 4460 Butte along French Creek, ca 3 mi N of Sly Creek Dam, N of Strawerry Valley 200 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  CHSC46852  Thalictrum fendleri Kirsten Tarp 1982-7-21 216 Butte Philbrook Reservoir. 1706 Comment
  UC480872  Thalictrum fendleri var. polycarpum R. M. Austin July 1896 655 Butte Coby<?> Comment
  UC9665  Thalictrum fendleri var. polycarpum Edw. L. Greene 1889-1 Butte Chico Comment
  CAS-BOT-BC399764  Thalictrum polycarpum Lowell Ahart 1990-4-8 6445 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CAS-BOT-BC77718  Thelypteris nevadensis M. S. Taylor 1981-5-21 3782 Butte Jct of Camp Creek, ca. 4 mi n of Pulga on Feather River hwy 70 1005 Comment
  CAS-BOT-BC77716  Thelypteris nevadensis Lowell Ahart 1982-9-13 3808 Butte About 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CAS-BOT-BC197408  Thinopyrum intermedium subsp. intermedium Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CAS-BOT-BC88232  Thysanocarpus curvipes James Jokerst 1985-3-24 2170 Butte Near Serpentine Point. 547 Comment
  CHSC43448  Thysanocarpus curvipes Lowell Ahart 1977-4-28 1321 Butte Along Fields Ridge Road, about 8 miles south-east of Feather Falls. 914 Comment
  HSC64129  Thysanocarpus curvipes J. P. Smith 1973-3-22 5921 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC35747  Thysanocarpus curvipes var. elegans R. E. Preston 1982-4-29 269 Butte At side of Hwy 70, ca. 0.2 mi s of Butte/Plumas Co. line. 487 Comment
  RSA0049976  Thysanocarpus radians David Johnson 1974-4-20 39 Butte Two miles north of Cherokee along Cherokee Rd. Comment
  SEINET119814