Search Results — 2000 specimen records retrieved (1593 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
  CHSC20540  Abelia schumannii Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  RSA691017  Acacia dealbata L. Ahart 2003-4-30 10118 Butte On the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. 67 Comment
  CHSC3625  Acacia decurrens John Francis 1966-2-27 35 Butte Arcadian and W. Francis Willard Avenues, Chico. Comment
  RSA31123  Acer glabrum var. torreyi A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra nevada above Jonesville 2134 Comment
  CAS-BOT-BC331604  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  RSA0045589  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 63 Comment
  CHSC109627  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CAS-BOT-BC21749  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC95214  Achillea millefolium R. D. Fischer 2004-5-2 801 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Guardian Trail between the Pine and Bloodypin Trails. 335 Comment
  CAS-BOT-BC210636  Achnatherum lemmonii L. W. Swift 1934-5-7 103 Butte Unspecified 731 Comment
  CHSC92647  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  JEPS110242  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  SEINET7593433 Image available Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CHSC251  Achyrachaena mollis B. Richardson 1929-4-21 Butte Fields around Chico. 60 Comment
  SEINET10474392  Achyrachaena mollis Mary Susan Taylor 1974-4-24 Taylor 189 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  SEINET11839699  Achyrachaena mollis D. K. Parker 1981-1 17 Butte Large population, ca 5 m W Hwy 99, 8.5 km N of Chico 65 Comment
  CHSC113919  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Orovolle, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of OrovIlle. Collected about 1/4 mile west of point above, according to label. 259 Comment
  JEPS122006  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC31097  Acmispon brachycarpus Diane M. Reilly 1980-4-19 19 Butte Ca. 2 m n off Big Bend Rd. on Pulga Rd, ca. 3 m off Hwy 70 ca. 25 mi e of Chico. 597 Comment
  CHSC90520  Acmispon brachycarpus Richard A. Nichols 1980-4-19 10 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  SEINET12765095  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC93103  Acmispon grandiflorus var. macranthus L. P. Janeway 1994-5-26 4653 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank. 1226 Comment
  HSC43133  Acmispon micranthus Maralyn O'Meara 1974-4-20 290 Butte Table Mtn. 305 Comment
  CHSC90502  Acmispon parviflorus Doug Burcombe 1988-4-20 18 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  CHSC53695  Actaea rubra Kirsten Tarp 1982-6-27 191 Butte S of Sly Creek Reservoir; near stream. 1097 Comment
  CAS-BOT-BC29925  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  UC185198  Adiantum capillus-veneris Mrs. Carlotta C. Hall 1914-7-17 9754 Butte e Chico (Honeyrun Grade) 304 Comment
  CAS-BOT-BC65557  Adiantum capillus-veneris M. S. Taylor 1979-10-3 2217 Butte s side of Butte Creek, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd., 243 Comment
  CHSC41132  Adiantum jordanii R. A. Hunt 1976-4-28 1 Butte Ca. 1 km n on Helltown Rd on steep embankment on e side of road. Ca. 18.5 km ene of CSU@Chico on course 66 degrees 30 minutes. In Butte Canyon ca. 1 km n of junction of Helltown Rd. and Humbug Rd. 225 Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  JEPS97429  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte 7 mi N of Oroville (North Table Mountain, dirt road, S of Beatson Hollow, about 1/8 mi N of Cherokee Road) 335 Comment
  SEINET10942474  Aegilops triuncialis K. Bridwell 1978-5-25 Bridwell 110 Butte Ungrazed rangeland, ca. 300 yds. S of Pentz Rd., ca. 3 mi. E of intersection with Hwy. 99, ca. 12 mi. SE of Chico. Annual grassland. 76 Comment
  CHSC33946  Ageratina occidentalis M. S. Taylor; L. Ahart 1981-8-16 4206 Butte N side of 25N04, near upper Big Kemshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1950 Comment
  UC600719  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-8-19 Butte woods near the head Butte Creek; Jonesville 1800 Comment
  CHSC65532  Agoseris retrorsa L. P. Janeway 1995-6-1 4767 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  UCD80029  Agoseris retrorsa CNPS SN Foothill Team 2005-3-29 SNFN 0026 b Butte CDFG North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC50849  Agrostis exarata var. monolepis Vernon Oswald 1990-7-28 4404 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 597 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
  SEINET10876406  Agrostis hyemalis A. Arthur Heller 1917-7-26 Heller 12847 Butte Moist shaded places in the yellow pine forest, Butte Measow. 1280 Comment
  CHSC41243  Agrostis microphylla J. D. Jokerst; L. Ahart, M. S. Taylor 1984-4-6 1965 Butte Ca 1/2 mile north of Kunkle Resv. Comment
  CAS-BOT-BC138774  Agrostis scabra Lowell Ahart 1987-7-8 5815 Butte Along a side road near Walker Plains Road, about 1.5 mile northeast of Coyote Gap, about 6 miles northeast of Pulga. 1341 Comment
  JEPS110399  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte 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
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10968292  Agrostis stolonifera Mary Susan Taylor 1978-7-18 Taylor 1676 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  SEINET10936190  Ailanthus altissima Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4208 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  UCD18732  Aira caryophyllea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 25 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  CHSC61339  Alisma lanceolatum Lowell Ahart 1993-7-13 7066 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC2059  Allium amplectens P. Delaplane 1965-4-6 58 Butte Ca. 3/4 mi above turnoff to Richardson Springs Rd. on Cohasset Rd. Comment
  CHSC30980  Allium amplectens M. S. Taylor; R. Schlising, L. Ahart 1980-5-31 2754 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC32373  Allium amplectens J. D. Jokerst 1979-5-2 1226 Butte Top of North Table Mt. Along Cherokee Rd at the E edge of the mountain. 396 Comment
  CAS-BOT-BC460729  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville Comment
  CDA39428  Allium amplectens L. L. Heinricks 1974-5-2 s.n. Butte On both sides of Wilbur Road. 0 Comment
  RSA245253  Allium amplectens J. P. SmithJr 1972-3-23 5097 Butte 1.6 miles from junction with U.S. 99 on the road to Paradise. Comment
  UCSB63599  Allium amplectens Hess, Vineca 1986-4-12 Butte Ridge n of Horseshoe Lake, vic. Chico Municipal Golf Course 91 Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  CHSC36902  Allium campanulatum R. A. Schlising 1980-6-10 3665 Butte NW part of county, along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. 1341 Comment
  CHSC49473  Allium campanulatum Vernon Oswald 1983-6-22 746 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  SEINET10938260  Allium campanulatum Mary Susan Taylor 1979-7-21 Taylor 2153 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET12047242  Allium cratericola Unknown 1978-1 2 Butte 15 m W of Cherokee Rd., 4.8 km S of Cherokee on Cherokee Rd Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  CDA13239  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-8 13086 Butte Plumas National Forest; Along Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC29721  Allium membranaceum J. D. Jokerst 1980-4-17 586 Butte Top of North Table Mt. Northern tip. 472 Comment
  CHSC96343  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 756 Comment
  CHSC20258  Allium peninsulare E. L. McNichols 1972-4-6 Butte Collected at Devil's Kitchen, Bidwell Park. Comment
  CAS-BOT-BC132073  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC132075  Allium peninsulare var. peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, near Bangor Comment
  JEPS87857  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  RSA770549  Allium sanbornii var. sanbornii S. Mashayekhi, M. Biabani 2009-7-11 SM 039 Butte Humboldt Rd. 0.6 miles east of Lomo. Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  CAS-BOT-BC170914  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  CHSC109138  Alnus rhombifolia Lowell Ahart 2012-2-22 17741 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC21021  Alnus rhombifolia M. S. Taylor 1975-10-4 961 Butte On se corner of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  UC1076425  Alnus rhombifolia Herbert L. Mason 1927-5-19 3716 Butte Cherokee mine Table Mt. (ne of Oroville) Comment
  RSA695396  Alopecurus carolinianus L. Ahart 2003-3-31 10030 Butte 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 miles east of Riceton Highway, about 10 miles southwest of Oroville. 30 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1594607  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte ca. 2 mi. w. Biggs (on s. side of Biggs Princeton Rd.) 30 Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 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
  UCSB38454  Alopecurus saccatus Reisentz, Paul 1979-5-13 Butte 6 mi N on Table Mtn Rd from State Hwy 162; Oroville Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  JEPS103456  Amaranthus californicus Lowell Ahart 2002-10-17 9984 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
  UC1562346  Ambrosia artemisiifolia Vernon Oswald and Lowell Ahart 1990-7-31 4425 Butte on n side of Concow Reservoir ((Camelot Estates Subdivision)) 621 Comment
  CAS-BOT-BC55583  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico Comment
  CAS-BOT-BC55584  Ambrosia psilostachya Lowell Ahart 1982-10-11 3859 Butte Gray Lodge, south-west of Gridley 35 Comment
  SEINET10904067  Amelanchier pallida Mary Susan Taylor 1981-5-13 Taylor 3698 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
  CHSC70808  Ammannia robusta B. Castro 1987-9-17 250 Butte Ca 7 mi SE of Chico, 0.6 mi N of jcn Hwys 99/149, on W side of Hwy 99 across from entrance to trout farm. 56 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  UCD102896  Ammannia robusta H. L. Mason; Verne Grant 1945-7-10 12633 Butte Butte Sink. Butt Creek, N of Marysville Buttes, Grey Lodge Game Refuge, southern. Comment
  UC479936  Amsinckia eastwoodiae H. E. Brown Mar 3 1897-Mar 22 1897 168 Butte near Clear Creek 53 Comment
  CHSC37415  Amsinckia intermedia R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4005 Butte NW of Oroville and n of Thermalito Forebay in the Campbell Hills. 106 Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS117149  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, 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
  SBBG126075  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte S of the trail, ca 50 yards E of Big Chico Crk, ca 100 yards W of Ten Mile House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 202 Comment
  UCD119727  Amsinckia lycopsoides A. A. Heller 1914-4-21 11310 Butte Chico. Comment
  CHSC101315  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC62554  Anagallis arvensis L. P. Janeway 1993-5-2 4341 Butte Foothill woodland adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  SEINET10511333  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CDA31535  Andropogon virginicus var. virginicus L. Ahart 2000-9-27 8693 Butte On the north side of Bean Creek Road, 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. Comment
  UC1122893  Angelica breweri P. L. Johannsen 1936-7-21 957 Butte 1 1/2 mi ese of Chaparral House (Lassen National Forest); Lassen National Forest 1645 Comment
  CHSC74072  Anisocarpus madioides B. Castro 1998-6-18 792 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC46331  Anthemis cotula Lowell Ahart 1989-5-23 6251 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC54546  Anthoxanthum odoratum Vernon H. Oswald; Lowell Ahart 1991-8-19 4834 Butte South side of Humbug Rd between Chaparral Guard Station and Memorial Spring, ca. 3.5 miles (air) southeast of Butte Meadows. 1554 Comment
  CHSC30713  Antirrhinum cornutum M. S. Taylor 1980-7-6 3050 Butte Ca. 1 mi e of Meridian Rd, ca 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chcio. 67 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC1685  Antirrhinum vexillo-calyculatum subsp. intermedium E. Walker 1932-7-26 Butte Magalia Heights. 762 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC94090  Aphyllon purpureum R. Fischer 2005-3-27 679 Butte Chico. Collection from Bidwell Park along the trail leading to old pistol range, adjacent Big Chico Creek. Plants growing at base a moist, sheer, north facing cliff. 76 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  UC1562405  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte ca. 1/2 mi. s.w. of Enterprise Bridge across Lake Oroville (Lake Oroville); Lake Oroville 259 Comment
  SD1683  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville, in brush and open woods 1550 Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  CHSC40357  Aralia californica Lowell Ahart 1985-9-7 5106 Butte Bottom and sides of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles south-west of Forbestown. 548 Comment
  CHSC48374  Arbutus menziesii Vernon Oswald 1987-3-29 2299 Butte Centerville Flume near the first tunnel N of Humbug Rd. 341 Comment
  CHSC583  Arbutus menziesii V. Keeler 1935-4-28 Butte Magalia. 731 Comment
  CHSC26688  Arceuthobium abietinum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1486 Butte At Humboldt Summit at Butte-Tehama county line, ca. 100 ft. w of Old Humboldt Rd, on Butte side. 2133 Comment
  CHSC87410  Arceuthobium occidentale R. D. Fischer 2004-2-28 122 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). UTM: 10610219E 4408698N. 533 Comment
  CHSC109137  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC31680  Arctostaphylos manzanita subsp. manzanita L. Ahart 1974-2-12 296 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3509  Arctostaphylos manzanita subsp. manzanita M. Gregg 1966-2-21 17 Butte On Neal Rd. down from Paradise. 1/2 mile above the water fountain ('water fountain' = probl. Elliot Spring House; M. S. Taylor 1/2/81). 304 Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  CAS-BOT-BC24300  Arctostaphylos mewukka Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown. 457 Comment
  RSA31836  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Road, Paradise, at the Game Refuge above Bowle's Manzsion. Comment
  RSA31998  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC726643  Arctostaphylos mewukka A. A. Heller 1942-1-29 16357 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UCD52296  Arctostaphylos mewukka James I. Mallory 1968-6-12 290 Butte 4 miles south of Brush Creek Ranger Station; Plumas National Forest. 640 Comment
  CAS-BOT-BC38611  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15491 Butte Neal Road at Paradise in the game refuge, above Bowle's Mansion. Comment
  CHSC26697  Arctostaphylos patula subsp. patula M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1473 Butte On both sides of Old Humboldt Rd, ca. 3 mi E of its jct with Scotts John Rd, N of Jonesville. 1828 Comment
  UCD51936  Arctostaphylos truei John Thomas Howell 1975-6-15 51107 Butte Castle Drive near Cliff Drive, Paradise, Butte County. Transition Zone. 609 Comment
  SEINET11989215  Arctostaphylos truei J. T. Howell 1975-1 51083 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CHSC13863  Arctostaphylos viscida subsp. viscida L. E. Delight 1973-4-28 11 Butte Locally abundant ca. 30 yds on E side of road and ca. 1.3 mi. N on De Sabla-Stirling city turn-off, Magalia. 853 Comment
  CDA31421  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  CHSC112939  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km, often lining the 3 dm wide strip next to the pave-ment, sometimes thickly so. 77 Comment
  JEPS110513  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  SEINET8521978  Aristida oligantha Kelly W. Allred 1991-1 5478 Butte along hwy 70, about 8 air miles north of Oroville, 1 mile northeast of Wheelock Road, annual valley grassland with scattered oaks 160 Comment
  CAS-BOT-BC400435  Aristolochia californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC30863  Aristolochia californica J. D. Jokerst 1979-3-23 1159 Butte Top of North Table Mt., W edge of Mt, immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  SEINET12090193  Aristolochia californica R. J. Goedl 1979-1 3 Butte 6 mi N of Oroville, 60 yds W of Cherokee Mountain Road 366 Comment
  CAS-BOT-BC295842  Arnica dealbata C. R. Quick 1951-6-9 51 -99 Butte Big Bar Mt. ridge Comment
  CAS-BOT-BC82415  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte along the south edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles 1524 Comment
  CAS-BOT-BC85144  Arnica nevadensis Clarence R. Quick 1953-7-1 53 -31 Butte Sierra Nevada - Big Bar Mt. ridge east of Pulga Comment
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 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
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  RSA401661B  Asclepias cordifolia M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  RSA755343  Asclepias fascicularis L. Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 miles east of Honcut, about 12 air miles south of Oroville. 32 Comment
  CDA14078  Asclepias speciosa G. F. Hrusa, T. D. Wilfred 1997-7-3 13961 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  CHSC86422  Aspidotis californica R. D. Fischer; Paul Maslin 2004-2-7 55 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  CHSC96824  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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
  SEINET11716736  Aspidotis californica M. S. Taylor 1980-1 2356 Butte ca 0.25 mi SW of lower Forbestown Rd, ca 3 mi W of Forbestown 396 Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  SEINET10529847 Image available Aspidotis carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1926 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC64265  Aspidotis densa H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 870 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  CHSC86436  Aspidotis densa Jenny Marr 1994-6-13 84 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-BC65911  Aspidotis densa Clarence R. Quick 1952-7-1 52 -132 Butte at junction of Mill Creek Road and Feather River Highway (Pulga) Comment
  SEINET10473397  Aster Mary Susan Taylor Taylor 985 Butte Bidwell Park, Chico. Comment
  SEINET256391  Aster chilensis var. medius 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. 55 Comment
  CHSC33696  Astragalus gambelianus L. Ahart 1981-4-9 2751 Butte Near North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC40304  Astragalus gambelianus Lowell Ahart 1985-3-22 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 Comment
  CAS-BOT-BC178460  Astragalus gambelianus Lowell Ahart 1981-4-9 2751 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CHSC12921  Astragalus pauperculus L. V. Ritter 1969-3-20 87 Butte Ca 200 yds. n of Rock Creek, .5 mi. e of Cohasset Rd. 76 Comment
  UC862994  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte n Oroville (treeless summit Table Mountain); n of Oroville, summit Table Mountain 304 Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC37832  Athyrium distentifolium var. americanum R. Schlising; K. Tarp, J. F. Fuller 1982-7-18 4329 Butte N part of county, n of Philbrook Reservoir and se of Snow Mountain peak. On flanks of the mountain. 2057 Comment
  CHSC36961  Athyrium filix-femina var. cyclosorum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi ne of Stirling City. 1463 Comment
  SEINET11983097  Athysanus pusillus Unknown 1978-1 3 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug & Honey Run Rds, 6.4 mi ESEof Chico 146 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
  CHSC61028  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC35663  Avena fatua R. E. Preston 1982-4-22 251 Butte Ca. 0.3 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 353 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  SEINET11842155  Baccharis pilularis subsp. consanguinea D. R. Fisher 1981-1 20 Butte Singer Creek, ca 1 km W of hiway 99, 16 km N of Chico 58 Comment
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CAS-BOT-BC27831  Balsamorhiza macrolepis H. E. Brown 1897-4-15 208 Butte Near Clear Crerek 53 Comment
  CAS-BOT-BC16377  Barbarea orthoceras Lowell Ahart 1987-5-6 5565 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC88051  Barbarea orthoceras R. D. Fischer; Jenny Marr 2004-5-16 177 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located n. end of mdw., n. side of rd. 50 ft from branch of Big Chico Creek. 1280 Comment
  SEINET5340932  Barbarea orthoceras P. A. Lehenbauer 1926-5-26 1237 Butte North fork of Feather River. Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC127  Berberis aquifolium var. dictyota F. Roos 1930-4-5 Butte Paradise. 548 Comment
  CAS-BOT-BC75953  Berberis pumila A. A. Heller 1962-6-15 37515 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC83278  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 27 Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1586529  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Comment
  CHSC113131  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC24496  Bistorta bistortoides M. S. Taylor 1976-6-28 1164 Butte Ca. 1/4 mi e of Old Humboldt Rd, in Butte Meadows. 1341 Comment
  CHSC95181  Bistorta bistortoides R. D. Fischer 2005-6-5 824 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  NY31005  Blennosperma californicum H. E. Brown 1897-3-3 146 - Butte Near Clear Creek 53.3 Comment
  RSA726250  Blennosperma nanum var. nanum R. R. Halse 2002-3-27 6160 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  CHSC83912  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CAS-BOT-BC14291  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  CHSC33468  Boechera platysperma R. E. Preston 1981-7-14 110 Butte Ridgetop. Ca. 4.8 km e of Jonesville. 2050 Comment
  SEINET10453128  Boisduvalia densiflora Mary Susan Taylor 1975-6-25 Taylor 800 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
  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
  UC1751233  Botrychium montanum Timothy B. Devine 1985-7-14 847 c Butte 1/2 mi NW of Jonesville (beside Willow Creek about 50 ft S of jct with road to Colby Mt. Lookout) 1511 Comment
  JEPS106108  Botrychium simplex Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows 1554 Comment
  CHSC43074  Boykinia major L. P. Janeway 1987-6-26 2290 Butte At Rag Dump. Damp meadowy creekside (Fall Cr). 1173 Comment
  UC1609476  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte about 6 (air) mi ne Feather Falls (on a steep bank along Fall River, about 200 yards w of the bridge across Fall River); along Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC145684  Brachypodium distachyon John Thomas Howell 1961-9-22 36753 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  SBBG128788  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte upper Bidwell Park, Chico, SE facing slope +/- overlooking Bear Hole on Big Chico Crk, between Middle Trail and Upper Trail 166 Comment
  SEINET10448436  Brassica geniculata Lowell Ahart 1985-7-24 Ahart 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC39608  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte In a field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut. 40 Comment
  UC1594553  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  CHSC52148  Briza minor Donald M. Burk 1978-4-18 118 Butte 100 ft s of intersection of Broyles Road and Hwy 99, ca. 11 mi n of Chico. 59 Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs 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
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  CHSC71203  Brodiaea minor Lowell Ahart 1988-6-9 7983 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS7701  Brodiaea minor W. L. Jepson 1934-5-4 16622 Butte 2.5 mi ne Cana Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  UCD22630  Brodiaea pulchella Joseph Laferriere 1982-4-18 4 Butte Table Mountain, NW of Cherokee Rd., 5 miles north of Oroville. 396 Comment
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  CAS-BOT-BC486486  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, Honcut, California. Near large rocks on flood plains along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  CAS-BOT-BC149548  Bromus carinatus var. carinatus John Thomas Howell 1967-6-22 42629 Butte Sierra Nevada. Magalia. 701 Comment
  CDA31575  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte About 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows, west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, and 100 yards south of the cabin Comment
  CHSC87811  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  JEPS106106  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC6668  Bromus diandrus Marilyn Lee 1968-3-15 109 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  CHSC93446  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  SEINET10514552  Bromus hordeaceus Lowell Ahart 1962-4-17 Ahart s.n. Butte Valley grassland; Peter Ahart Ranch, Honcut. 46 Comment
  CHSC87978  Bromus japonicus Lowell Ahart 2004-6-22 11125 Butte Margins of a large seep, about 50 yards west of the parking lot near the cattle chute, on the west side of Cherokee Road, North Table Mountain, about 3/4 mile (air) west of Oregon City, about 7 miles (air) north of Oroville. 404 Comment
  JEPS113792  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CHSC38795  Bromus laevipes Vernon Oswald 1983-5-7 438 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC39518  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte On the high banks of North Honcut Creek, above the high water line, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  SEINET10507835  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC162363  Bromus madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CAS-BOT-BC162365  Bromus madritensis John Thomas Howell 1967-6-22 42622 Butte Sierra Nevada. Magalia. 701 Comment
  UCD58983  Bromus madritensis Collector unknown 1951-1 Butte Cherokee. 9.5 miles (in direct line) north of Oroville. 373 Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  CHSC49518  Bromus orcuttianus Vernon Oswald 1983-7-6 807 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. On an old logging road. 1036 Comment
  UC816304  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC162020  Bromus racemosus John Thomas Howell 1962-6-16 37628 Butte Sierra Nevada. Concow School north of Yankee Hill. 533 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CHSC36535  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC49524  Bromus tectorum Vernon Oswald 1984-5-21 1196 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.5 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  SEINET10515173  Bromus tectorum Lowell Ahart 1982-6-4 Ahart 3531 Butte On dry bare rocky lava soil, on a lava cap, 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. Very common. Yellow Pine Forest. 1000 Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 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 1917 Comment
  UC1564786  Calandrinia ciliata V. Oswald and L. Ahart 1989-6-27 3835 Butte Humbug Road at Butte Creek House (ca 3.3 mi (air) se of Jonesville); Butte Creek 1767 Comment
  CHSC26809  Callitriche heterophylla var. bolanderi M. S. Taylor 1978-5-7 1607 Butte In irrigation ditch in Richvale vernal pools area, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  CHSC38281  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-3-9 146 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC38284  Callitriche marginata Vernon Oswald 1983-4-6 286 Butte Upper Bidwell Park, Chico, in an old road ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 86 Comment
  CHSC33953  Calocedrus decurrens M. S. Taylor 1981-8-15 4182 Butte On n side of Skyway, Inskip. 1463 Comment
  CHSC3904  Calocedrus decurrens R. Carter 1967-12-31 502 Butte Found ca. 17 mi. NE of Oroville on W side Big Bald Rock along E side Bald Rock Rd. where road turns off to campground. 1066 Comment
  SEINET175334  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte On ridge W of North Willow Creek Jonesville 1650 Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  CHSC2839  Calochortus albus David Prall 1965-4-25 25 Butte On roadside bank of north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  SEINET12046804  Calochortus albus D. J. Funk 1976-1 17 Butte ca 5 ft W of Humbug Rd & 150 yd NW of covered bridge on Butte Creek, 6.4 mi ESE of Chico 110 Comment
  CHSC46427  Calochortus luteus Lowell Ahart 1989-5-28 6298 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS117716  Calochortus luteus Lowell Ahart 2010-6-1 16758 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  CHSC44981  Calochortus monophyllus Phillip Scott 1988-4-23 45 Butte Cohasset Road, ca. 3.0 mi n of Cohasset. 1066 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CHSC41463  Calochortus nudus Lowell Ahart 1986-7-2 5340 Butte North of the dirt road, 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CAS-BOT-BC493083  Calochortus nudus Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC4134  Calochortus tolmiei R. Carter 1966-4-26 359 Butte Found ca. 10 mi. NE Oroville along W side USFS road 21N40 to Bloomer Mt., 0.5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CAS-BOT-BC494321  Calochortus tolmiei C. C., Mrs. Bruce 1898-5-1 2407 Butte Mountains Comment
  CHSC26708  Calycadenia ciliosa M. Hayes; Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Highway, approx. 2.3 mi S of the Chico Airport. 35 Comment
  CHSC41219  Calycadenia ciliosa J. D. Jokerst 1985-7-18 2514 Butte Top of Cohasset Ridge in community of Cohasset, ca. 200 meters W of Cohasset Hwy. Comment
  CAS-BOT-BC270002  Calycadenia multiglandulosa Lowell Ahart 1980-6-19 2390 Butte Along Swedes Flat Road, near Bangor 320 Comment
  SD122584  Calycadenia multiglandulosa Lowell Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 miles east of Oak Grove Cemetary. 500 Comment
  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
  CHSC40065  Calycadenia oppositifolia C. C. Parry 1882-5-1 188 Butte Chico. Comment
  UC1876185  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UCD129786  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mile south of Chico Muncipal Airport on Cohasset Road. Comment
  CAS-BOT-BC270882  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  RSA255510  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles SW of Oroville Dam Blvd. Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC113156  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 Comment
  CHSC30285  Calycadenia truncata M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2296 Butte S side of rd from Magalia serpentine down to Feather River, ca. 0.5 mi up from the river. 670 Comment
  JEPS120559  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  SEINET10475214  Calycadenia truncata Mary Susan Taylor 1977-8-16 Taylor 1453 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 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-BC90919  Calycanthus occidentalis Lowell Ahart 1983-6-26 4104 Butte About 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way. 500 Comment
  CHSC174  Calycanthus occidentalis Agnes Riker 1897-5-1 Butte Comment
  CHSC101175  Calystegia atriplicifolia subsp. buttensis Jamie Tuitele-Lewis; L. P. Janeway, B. Castro 2005-6-27 Butte High Cascade Range. Along the north edge of Hendricks Canal about 0.5 mi northeast of De Sable Reservoir, on the western edge of the Forest Service parcel. 856 Comment
  CHSC34981  Calystegia occidentalis subsp. occidentalis Marc Hayes; R. A. Schlising 1974-6-11 3141 Butte E of Oroville, along Forbestown Road, 0.2 mi W of jct with Black Bart road and 5.7 mi W and NW of Forbestown. Comment
  CAS-BOT-BC216300  Camissonia Lowell Ahart No date on label s.n. Butte Peter Ahart Ranch. Noncut. Comment
  POM59345  Campanula prenanthoides Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC101274  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC108863  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte On the sides of the Bloody Pin Trail, about 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 304 Comment
  CHSC78069  Capsella bursa-pastoris Megan Lee Hudzik 1998-4-16 20 Butte Bidwell Park, 50 m w of Horseshoe Lake, 6 miles s of Bidwell Mansion. Next to a stream. 91 Comment
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  UCD114130  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico, in a garden. Comment
  SEINET10448444  Cardamine breweri Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4192 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC3612  Cardamine californica R. Jaegel 1966-3-2 19 Butte Collected 6 miles Northeast of Chico, in Upper Bidwell Park along the north bank of Butte Creek. Comment
  SD8269  Cardamine californica Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC37877  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  UC1609210  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  JEPS115627  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2009-5-15 15691 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
  CHSC113409  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC59008  Carex abrupta Lowell Ahart 1992-7-26 6849 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  SEINET10587463  Carex angustata Lawrence P. Janeway, Robert A. Schlising 1988-7-1 Janeway 2926 Butte T26N, R5E, Jonesville quad (15') SE 1/4 od sec. 20. Small shallow lake (leach lake), 1/2 mi W of Butte Creek House. Forming an isolated patch close to the forest bordeing the pond. With C. vesicaria (which is the dominant plant in & next to the lake.) 1814 Comment
  SEINET7550020 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, John Hunt 2003-4-22 7764 Butte Oroville Dam quad. Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  HSC87280  Carex aurea L. P. Janeway, Robert A. Schlising 1988-7-16 3011 Butte Adjacent to Jones Creek at crossing of road to Scotts John Creek. 1616 Comment
  CHSC86862  Carex barbarae L. P. Janeway; Gavin Blosser 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. 305 Comment
  JEPS102221  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  SEINET10653008  Carex barbarae Lewis S. Rose 1939-6-5 Rose 39199 Butte Honcut. 30 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side 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
  UC1586586  Carex bolanderi Vernon H. Oswald and Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway, on the edge of Palermo Canal); Lake Oroville Recreation Area, Dan Beebe Trail 170 Comment
  UC1609336  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek); Bolt Creek 1325 Comment
  CAS-BOT-BC19604  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge. Along Concow Road 2.0 miles north of Rag Dump. 1295 Comment
  UC1755303  Carex brainerdii Dean W. Taylor 2004-7-21 19198 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  HSC103999  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Chico, one block S of Chico High School, NW of the intersection of W. Frances Willard Ave. and Arcadian Ave. 59 Comment
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  CHSC38896  Carex feta Vernon Oswald 1983-5-27 566 Butte Upper Bidwell Park, Chico, below the South Rim Trail between the Golf Course and the power lines. 121 Comment
  UCSB63767  Carex feta Janeway, L. 1995-7-16 Butte Kimshew Point quad., T24N, R4E, SE 1/4 of SW 1/4 of sec. 13; 0.8 mi. northwest of Oak Point; 0.8 mi. east of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi. north of Kimshew Creek; along Concow Road; 8.2 mi. east of West Branch Feather River 1402 Comment
  CHSC48549  Carex gracilior L. P. Janeway 1988-4-10 2622 Butte North Honcut Cr at Dunstone Dr bridge at jct with Avodado Rd. 82 Comment
  JEPS113289  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side fo North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 52 Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  UC1748285  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road 1749 Comment
  CHSC45049  Carex integra Vernon Oswald 1987-5-28 2941 Butte Concow Rd. at Rag Dump. Grassy flat near Fall Creek. 1170 Comment
  CHSC44689  Carex jonesii L. P. Janeway; C. A. Janeway 1986-9-13 1850 Butte Mdw along Humbug Summit Rd ca 1 1/2 mi SW of the summit. 1859 Comment
  CAS-BOT-BC7779  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Southeast of Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC45747  Carex laeviculmis L. P. Janeway 1988-6-19 2839 Butte 3.3 mi N of Stirling City towards Inskip along logging rd 0.2 mi W of The Skyway. 1219 Comment
  UCD140476  Carex lemmonii L. P. Janeway 1987-5-28 2109 Butte along side road (23N12Y) of Four Trees Road, 1.6 miles west of its junction with OroQuincy hwy. 1463 Comment
  CHSC113433  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC52282  Carex mariposana L. P. Janeway 1987-6-27 2332 Butte Along Little Kimshew Cr just N of Ramsay Bar. Site of old Ramsay Bar mining and timber activities. 1341 Comment
  CHSC45057  Carex multicaulis Vernon Oswald 1984-4-9 1131 Butte Feather Falls Trail, 1.9 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 Comment
  SEINET3904180  Carex multicaulis L. W. Swift 1934-5-8 106 Butte Plumas National Forest, south of. Challenge, CA.; 0 914 Comment
  SEINET7568661 Image available Carex nebrascensis Unknown 2004-8-15 8245 Butte Jonesville 7.5' quad. High Cascade Range, at Cold Springs, north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  SEINET8989730 Image available Carex pachystachya Unknown 2006-1 12980 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jones- ville, about 5 miles (air) northeast of Butte Meadows.Yellow Pine Forest. Comment
  CHSC105521  Carex raynoldsii Lowell Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  SEINET10705318  Carex rostrata Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2503 Butte T26N, R4, Jonesville quad (15') SE1/4 of sec.36, Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. In soggy mossy meadow. Comment
  CHSC52873  Carex straminiformis L. P. Janeway 1986-9-1 1835 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CAS-BOT-BC116738  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CHSC52881  Carex subfusca L. P. Janeway 1989-5-17 3248 Butte Cyn overlook along road to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  JEPS94142  Carex subfusca Lowell Ahart 1998-6-9 7990 Butte ca. 7 mi. (air) n. Oroville (s.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CHSC52239  Carex utriculata L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2988 Butte Crane Valley (upper Big Kimshew Cr); meadow. 1569 Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 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
  SEINET13723638  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  CAS-BOT-BC248932  Castilleja Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  SD4817  Castilleja affinis E. B. Copeland 1930-7-12 468 Butte Jonesville; under north brow of ridge 2100 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
  CAS-BOT-BC249591  Castilleja applegatei subsp. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia 731 Comment
  CHSC109577  Castilleja applegatei subsp. pinetorum L. P. Janeway 2012-6-23 10887 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
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  UC426962  Castilleja arachnoidea E. B. Copeland 1930-7-12 468 Butte above Jonesville 2100 Comment
  CHSC61014  Castilleja attenuata Lowell Ahart 1993-6-20 6995 Butte Jackass Flat, Mooreville Ridge, about 1 (air) miles north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS124208  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  OBI9383  Castilleja attenuata Lewis S. Rose 1967-5-6 67055 Butte Oroville 52 Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  CHSC3843  Castilleja exserta Gerry Carrauthers 1966-3-28 80 Butte Table Mountain ca. 6 mi. N. of city of Oroville. Comment
  JEPS4326  Castilleja lacera R. F. Hoover 1936-5-20 1149 Butte 10 mi sw Oroville Comment
  CDA33627  Castilleja lineariloba R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC58960  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC600643  Castilleja tenuis H. F. Copeland 1920-7-12 473 Butte Jonesville Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  CHSC1511  Ceanothus lemmonii V. Keeler 1925-3-2 Butte Paradise. 548 Comment
  SEINET10493646  Ceanothus lemmonii Heidi H. Schmidt 1993-6-15 Schmidt 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  CHSC31915  Centaurea calcitrapa M. S. Taylor 1980-8-30 3323 Butte In Potter Ravine along creek at dirt rd crossing betw. The High Rocks and Box Hall Flat, ca. 2 air mi e of Oregon City on Table mt, 9 mi n of Oroville. 304 Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CDA29278  Centaurea cineraria Ed Finley 2009-5-14 s.n. Butte Paradise. Private residence: 5252 Edgewood Lane, near Pearson Road. 0 Comment
  CHSC116948  Centaurea cyanus Matthew Forster 2013-4-3 Butte Hwy 32 off of 10 Mile House Rd. Found along hiking path of 10 Mile House Rd. 457 Comment
  CHSC31966  Centaurea solstitialis S. Posner 1972-10-3 Butte Garden behind Trans Pacific Garden Apartments (725 Nord Ave.), Chico. Comment
  JEPS94438  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte abuot 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel tower power line, along sides of a logging road, about 1/4 mi w of Rim Road) 731 Comment
  UCD130088  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte Chico. Comment
  CHSC84431  Centromadia fitchii Lowell Ahart 2003-8-4 10469 Butte Pastue fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  UC1594735  Centromadia fitchii Lowell Ahart 1992-9-9 6921 Butte about 0.5 mi se Kunkle Reservoir (Lake Oroville below the high water line); Lake Oroville 243 Comment
  JEPS98422  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10971587  Cephalanthera austiniae Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4709 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  CAS-BOT-BC388176  Cerastium fontanum Lowell Ahart 1987-5-22 5679 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 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
  CHSC100963  Cerastium glomeratum Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15494 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, 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. 231 Comment
  UCD80206  Cerastium glomeratum CNPS SN Foothill Team 2006-4-24 SNFN 0418 Butte CDFG North Table Mountain Wildlife Area. 287 Comment
  CAS-BOT-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CHSC26457  Cercis occidentalis P. Moyer 1972-3-11 120 Butte CSUC Campus. E side of Cafe bridge, n bank of Chico Ck. 60 Comment
  SFV1802  Cercis occidentalis B. Fuller 1961-4-1 s. n. Butte Butte Creek Canyon. Honeyrun Road below Paradise. Comment
  CHSC1543  Cercocarpus betuloides var. betuloides E. Carlson 1937-4-12 Butte Site of Ten-mile House, Humbolt Road. 426 Comment
  CHSC23676  Chaenactis glabriuscula var. megacephala M. S. Taylor 1976-4-27 1099 Butte On s side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. In ledge overlooking canyon. 609 Comment
  CDA7374  Chamaemelum fuscatum L. Ahart 2004-4-1 10732 Butte On the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. Comment
  RSA755368  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  CHSC97268  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2007-8-19 14492 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UC1303129  Chamaesyce ocellata subsp. ocellata A. A. Heller 1927-9-5 14469 Butte ca 3 mi e Chico Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  SEINET10899933  Cheilanthes californica Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5213 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC44088  Cheilanthes gracillima L. P. Janeway 1987-7-5 2465 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  POM196123  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  SEINET10529915  Cheilanthes gracillima Mary Susan Taylor 1983-1-17 Taylor 5214 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC94608  Chenopodium album Lowell Ahart 2006-9-13 13312 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
  RSA725000  Chenopodium ambrosioides var. ambrosioides L. Ahart 2006-9-11 13281 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
  CHSC51255  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 Butte On the south side 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
  CHSC30704  Chimaphila menziesii M. S. Taylor 1980-5-27 2658 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  POM161684  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  SEINET10874402  Chimaphila umbellata var. occidentalis Mary Susan Taylor 1978-9-9 Taylor 1907 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC184907  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte Along the Midway, about 0.5 mile south of Durham. 48 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC97033  Chondrilla juncea L. P. Janeway 2007-6-19 9062 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  CHSC27930  Chorizanthe polygonoides var. polygonoides M. S. Taylor; J. T. Howell 1975-4-26 510 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CHSC45529  Chorizanthe polygonoides var. polygonoides L. P. Janeway 1988-5-9 2663 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  CHSC55497  Cicendia quadrangularis L. P. Janeway 1991-4-21 3915 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  SEINET10454640  Cicuta douglasii Mary Susan Taylor 1978-9-8 Taylor 1899 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  RSA0047111  Cinna latifolia L. Ahart 2006-8-15 13191 Butte On the east side 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. 1570 Comment
  SEINET10901866  Cinna latifolia Lowell Ahart 1983-8-16 Ahart 4287 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC61629  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte On the south side of the dirt road, about 1 mile south-east of Snow Mountain. 1981 Comment
  CDA21649  Cirsium douglasii var. breweri L. Ahart 2006-8-15 13188 Butte 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  CAS-BOT-BC285578  Cirsium occidentale var. candidissimum E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC288036  Cirsium occidentale var. venustum Lowell Ahart 1980-5-25 2328 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  RSA59599  Cirsium occidentale var. venustum Verne Grant, Alva Grant 1950-7-15 8956 Butte 11 miles N of Chico on Hwy 32 Comment
  SEINET10473708  Cirsium proteanum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4075 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
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 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
  CHSC38338  Cirsium vulgare Vernon Oswald 1982-12-17 22 Butte Bidwell Park, Chico, 400 ft nw of the parking lot at Diversion Dam. 134 Comment
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228759  Cistanthe umbellata Dr. Barton W. Evermann 1917-7-1 s.n. Butte Between Oroville & Chico Comment
  UCD149987  Citrullus lanatus var. citroides E. L. 1971-9-7 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  UCSB63610  Clarkia affinis Webster, Steven 1986-4-15 Butte ca. 5 mi ne of Chico; Chico Quadrangle, Ne1/4, Ne1/4, Sect. 22, T22N, R2E, MDM 16 Comment
  CHSC61161  Clarkia arcuata Vernon H. Oswald 1993-5-18 5398 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC71184  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC81281  Clarkia arcuata J. Trizzino 2001-4-25 52 Butte Humbug Road, 6 mi north of Steel Bridge. 914 Comment
  LA205996  Clarkia biloba subsp. brandegeeae H. Lewis; M. Lewis 1947-6-11 394 Butte 7.0 mi. NW of Bangor on the road to Oroville 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
  CAS-BOT-BC171881  Clarkia gracilis subsp. gracilis Lowell Ahart 1980-4-30 2125 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UC1795594  Clarkia mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte on USFS N60 approximately immed. E of bridge over Marble Creek 1150 Comment
  SEINET10841116  Clarkia mildrediae Mary Susan Taylor 1978-7-21 Taylor 1804 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CHSC48628  Clarkia mildrediae subsp. mildrediae Vernon Oswald 1984-7-9 1354 Butte Near falls on Bear Ranch Creek s-e of Hwy 70 at Cresta Rest Area. 512 Comment
  CHSC71158  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4679 Butte Along ridge 0.7 mi east-southeast of Flea Mountain; northeast side near the top, 0.3 mi east-southeast of Campbell Meadow. Road cutbank and above. 1158 Comment
  UCD169420  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. 655 Comment
  JEPS117277  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  CHSC1113  Clarkia rhomboidea M. Roberson 1956-6-4 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC70744  Clarkia rhomboidea L. P. Janeway 1993-6-9 4372 Butte Along Road 22N34 1.8 mi south of the 'low water crossing' of French Creek; east-facing slope above French Creek southeast of Swayne Hill. 621 Comment
  CHSC87565  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a look out point). 365 Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  CHSC38628  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-2-19 88 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. at Parking Area T (3.3 mi e of the power lines). Growing on the shaded side of a rock culvert. 219 Comment
  CHSC44341  Claytonia parviflora subsp. parviflora Lowell Ahart 1988-3-27 5937 Butte Along the North fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  POM102026  Claytonia parviflora subsp. parviflora C. C. Bruce 1897-06 2014 Butte Butte Creek Comment
  SFV1192  Claytonia perfoliata M. L. Vincent 1961-3-29 27 Butte Sacramento Valley Chico. Bidwell Park. 100 Comment
  CAS-BOT-BC439754  Claytonia perfoliata Lowell Ahart 1982-4-24 3369 Butte About 3/4 mile south-west of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CAS-BOT-BC443763  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC36155  Claytonia rubra subsp. rubra Jan Rumore 1982-4-17 16 Butte Widely scattered population, ca. 1 mi e of Forest Ranch, and 0.25 mi e on Forest Ranch Rd., and 0.10 mi w of A. J. Stohr Rd. termination, 1.2 mi e of Forest Ranch. 670 Comment
  CHSC56077  Claytonia rubra subsp. rubra L. P. Janeway; R. A. Schlising 1988-7-16 3000 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  UC852042  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows; Sierra Nevada 1219 Comment
  CAS-BOT-BC91353  Clematis lasiantha A. A. Heller 1913-4-5 10700 Butte Hills, north side of the Feather River above Oroville. Comment
  CHSC4021  Clematis lasiantha J. E. Bowlin 1967-3-10 5 Butte Down hillside, ca. 10 feet w of Cohasset Rd. and ca. 5.9 miles n of the corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  CHSC65824  Clematis lasiantha Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi south of trailhead in Paradise. 548 Comment
  CHSC99570  Clematis lasiantha L. P. Janeway 2008-5-26 9366 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC38685  Collinsia heterophylla Vernon Oswald 1983-4-18 343 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the power lines. 195 Comment
  CHSC90230  Collinsia heterophylla Michael J. McNairn 1989-4-22 11 Butte On cliff s side of Big Chico Creek, S of golf course, 3/4 mi. e of 5-mile swimming area, Bidwell Park, E Chico. 79 Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  UC426947  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville 1650 Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  CHSC90148  Collinsia sparsiflora Joseph Silveira 1982-4-17 16 Butte 90 m south of Butte Creek and 66 m west-southwest of Covered Bridge, 10.2 km east-southeast of Chico. 34 Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CHSC28762  Collomia heterophylla J. D. Jokerst 1978-6-14 131 Butte Roadside, 100 mets. N. of De Sabla Resv. on W. side of Skyway. Comment
  CHSC44412  Collomia heterophylla Lowell Ahart 1988-5-30 6023 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  CHSC93968  Collomia tinctoria R. D. Fischer 2004-6-20 749 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  CHSC51916  Comandra umbellata subsp. californica S. B. Collom 1988-4-18 8 Butte 0.9 mi NW of upper entrance to Forest Ranch Rd, off Hwy 32; 14.2 mi NE of chico. Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  CAS-BOT-BC180249  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Near Magalia Comment
  CHSC115432  Convolvulus arvensis Ariana Gehrig 2013-5-7 Butte City of Chico. Along pathway, near campus. 64 Comment
  CAS-BOT-BC286060  Conyza canadensis John Thomas Howell 1961-9-22 36732 Butte Bank of Feather River, Oroville 53 Comment
  POM196099  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  CHSC84453  Cordylanthus pilosus subsp. trifidus Lowell 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. 320 Comment
  JEPS104641  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, ca 1/2 mi n of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 320 Comment
  RSA88133  Cordylanthus pilosus subsp. trifidus J. T. Howell 1951-6-26 27515 Butte Feather River Canyon. 213 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  POM193363  Cornus californica E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  SEINET10453480  Cornus nuttallii Mary Susan Taylor 1975-4-17 Taylor 480 Butte Corner of Arcadian and Sacramento Streets, Chico. 61 Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  UC175520  Cornus sericea subsp. sericea A. A. Heller 1913-6-7 10817 Butte W. Branch of N. Fork of Feather R. near Stirling; W. Branch of N. Fork of Feather R. 914 Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CHSC43248  Corydalis caseana subsp. caseana Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  UCD95112  Corydalis caseana subsp. caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. Comment
  CAS-BOT-BC401858  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  CAS-BOT-BC401862  Corydalis caseana subsp. caseana A. A. Heller 1928-6-20 14685 Butte Forest of Butte Meadows Comment
  CHSC47976  Corylus cornuta var. californica Vernon Oswald 1987-6-29 3041 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 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
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  CHSC118553  Cotula australis Lowell Ahart 2017-4-22 21389 Butte Normal plants, where we park vehicals, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC117434  Cotula coronopifolia Lowell Ahart 2016-5-31 20903 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  UC1562845  Cotula coronopifolia Barbara Ertter with Lowell Ahart 1986-4-13 5903 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC291333  Cotula coronopifolia Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palermo 35 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
  SEINET9305827  Crassula connata Unknown 1963-3-22 63019 Butte Near summit of Sugarloaf Peak, Campbell Hills. In shallow soil on basalt. Comment
  CHSC82486  Crepis pleurocarpa Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9747 Butte Mountainside, on the north side 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
  CHSC116731  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC42433  Crucianella angustifolia Lowell Ahart 1987-5-9 5578 Butte About 1/4 mile west of Bardees Bar along the North fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CAS-BOT-BC190089  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut. 60 Comment
  CHSC41984  Crypsis schoenoides Lowell Ahart 1986-11-14 5481 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, about 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS108962  Crypsis schoenoides Lowell Ahart 2006-9-11 13303 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
  JEPS121985  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SBBG119797  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1524 Comment
  CHSC33419  Cryptantha flaccida R. A. Schlising; J. D. Jokerst 1980-7-2 3820 Butte 1.4 mi S of junction of Nimshew and Centerville Roads at Nimshew, along Centerville Road. Comment
  CHSC44476  Cryptantha flaccida Lowell Ahart 1988-5-15 6001 Butte On dredger tailings, about 1/4 mile east of Highway 70, about 1/2 mile south of Oroville Dam Boulevard, south of Oroville. 42 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  POM71368  Cryptantha flaccida C. C. Bruce 1891-03 1930 Butte Hams? Comment
  SEINET10497274  Cryptantha flaccida Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4119 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC3021  Cupressus lusitanica Carl Pejsa 1958-4-19 34 Butte Bidwell Park Forestry Station. Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  UCD126312  Cuscuta indecora var. indecora A. A. Heller 1914-8-11 11677 Butte Chico-Hamilton road, 6 miles from Chico. 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
  CHSC94555  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC106  Cycladenia humilis var. humilis 1951-4-24 Butte Forest Ranch. 609 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  CHSC42657  Cymopterus terebinthinus var. californicus Vernon Oswald 1983-7-6 816 Butte Near Humboldt Rd. (to Butte Meadows) 2.0 mi n-e of its jct. with Calif. Hwy. 32. 1386 Comment
  CAS-BOT-BC190248  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larking Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC28498  Cynodon dactylon M. S. Taylor 1979-8-4 2181 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Power house, ca. 30 mi n of Oroville. 487 Comment
  CHSC66173  Cynodon dactylon Vernon H. Oswald; Lowell Ahart 1996-5-27 7668 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
  CHSC101321  Cynoglossum grande Lowell Ahart 2009-4-22 15570 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC38273  Cynoglossum grande Vernon Oswald 1983-2-14 72 Butte Upper Bidwell Park, Chico, ca. 300 ft. n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). 256 Comment
  UC480665  Cynoglossum occidentale H. F. Copeland 1930-6-11 Butte Jonesville, Butte Creek Canyon Comment
  JEPS117276  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  CHSC75976  Cyperus acuminatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC114703  Cyperus bipartitus Lowell Ahart 1981-9-15 3169 Butte Along French Creek. 1300 Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 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
  CHSC10729  Cyperus difformis Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76011  Cyperus difformis Lowell Ahart; Vernon H. Oswald 1999-8-13 8139 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry. 32 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  CHSC116017  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC37388  Cyperus eragrostis R. A. Schlising 1980-8-31 3977 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC78280  Cyperus eragrostis Lowell Ahart 2000-6-29 8550 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC114604  Cyperus eragrostis James D. Jokerst 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, ca 3 mi NW of the Oroville Quincy Hwy, 700 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
  CHSC43786  Cyperus esculentus Vernon Oswald 1987-7-23 3145 a Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC68404  Cyperus niger L. P. Janeway 1988-6-29 2903 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  CHSC82170  Cyperus niger L. Ahart 1974-11-9 674 Butte Along edge of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS97343  Cyperus niger Lowell Ahart 1995-8-19 7613 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  CHSC113157  Cyperus squarrosus Lowell Ahart 2013-11-13 19244 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CAS-BOT-BC114077  Cyperus squarrosus Lowell Ahart 1974-7-1 s.n. Butte Bottom of a small wash, Peter Ahart Ranch, Honcut. 45 Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC28615  Cyperus strigosus M. S. Taylor 1979-10-3 2222 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from Helltown bridge over Butte Creek, ca. 15 mi e of Chico. 243 Comment
  CHSC68413  Cyperus strigosus L. P. Janeway; D. Alexander, B. Castro, C. Oettinger, B. Clark 1986-9-26 1900 Butte Within the City of Chico; Lower Bidwell Park, along Big Chico Creek about 1/4 mi east of Hwy 99. 67 Comment
  CDA38893  Cyperus strigosus L. Ahart 2000-8-23 8661 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC101752  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CHSC69105  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided. Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1609399  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat); Mooreville Ridge 1158 Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SD81976  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte Jonesville 1800 Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC65905  Damasonium californicum Vernon H. Oswald 1996-4-20 7411 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. Marshy drainage at the SW boundary of Tract 3.4, Sanctuary II. 32 Comment
  UCD61328  Danthonia unispicata August L. Hormay 1929-6-22 Butte Butte Meadows. Comment
  CAS-BOT-BC420351  Darmera peltata A. A. Heller 1916-4-13 12317 Butte Stilson canyon E of Chico Comment
  CAS-BOT-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  CHSC56767  Delphinium gracilentum J. D. Jokerst; M. S. Taylor 1980-4-18 608 Butte Nimshew Ridge; 1 mi south of Nimshew, south of road where it makes 90 degree turn to the west on the north edge of the section. 701 Comment
  CAS-BOT-BC121513  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  POM99347  Delphinium hansenii C. C. Bruce 1897-06 s.n. Butte [No location data on label] Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  CHSC24928  Delphinium nudicaule T. L. Reynolds 1976-4-23 54 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CAS-BOT-BC9923  Delphinium nudicaule A. A. Heller 1922-4-23 13619 Butte At the Feather River crossing near Yankee Hill Comment
  CHSC56770  Delphinium nuttallianum R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4117 Butte E of Stirling City, W of Little Kimshew Creek on top of Table Mountain. 1828 Comment
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  CHSC90040  Delphinium variegatum Rebecca L. Hill 1990-4-8 11 Butte Ca. .5 mi se of jct of Oroville Chico Hwy and Mesa Road. W side of Oroville Chico Hwy, ca. 6 mi se of Chico. 47 Comment
  CAS-BOT-BC17015  Delphinium variegatum Lowell Ahart 1980-5-25 2320 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC75397  Delphinium variegatum subsp. variegatum Jennifer Slater 1997-4-6 4 Butte In vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CAS-BOT-BC16980  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Low hills 8 miles north of Oroville below the Quercus Douglasii belt. Comment
  CAS-BOT-BC82873  Dendromecon rigida A. A. Heller 1928-6-20 14629 Butte At Paradise. Comment
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS114178  Dendromecon rigida L. P. Janeway 2007-5-6 8974 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  SEINET10507361  Deschampsia cespitosa Mary Susan Taylor 1978-6-24 Taylor 1663 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  SEINET10524182  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  CAS-BOT-BC201750  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  SBBG119798  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  UC1609007  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte ca. 1 mi. s.e. Butte Meadows (along Bolt Creek); Bolt Creek 1325 Comment
  UCD63483  Deschampsia elongata L. E. Hazeltine 1916-6-10 Butte Chico. Comment
  SEINET10508569  Deschampsia elongata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4073 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
  CHSC97132  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  CHSC19643  Dicentra formosa Kingsley R. Stern 1966-4-14 Butte 15 mi. Comment
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  UC1362282  Dicentra formosa Kingsley R. Stern 1964-4-21 2059 Butte ca 0.5 mi e Poe Power Dam (banks of Heinz Creek, s side of canyon of North Fork of Feather River); Pulga Quad., Heinz Creek Comment
  CHSC19656  Dicentra peregrina K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC254523  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1961-9-22 36729 Butte Feather River, Oroville 53 Comment
  CAS-BOT-BC500060  Dichelostemma capitatum H. E. Brown 1897-5-1 s.n. Butte Near Clear Creek Comment
  CHSC56817  Dichelostemma capitatum subsp. capitatum Cynthia D. Seaman 1980-4-11 4 Butte 10 ft e of creek, ca. 1/2 mi n on dirt road off Big Bend Rd, ca. 5 mi se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  CHSC92530  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UCD148232  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2893 Butte 7.9 mi NNE of Oroville, along E side of Clark Rd, 0.9 mi N of its jct with Hwy 70. 84 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
  HSC38064  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2472 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC502522  Dichelostemma volubile Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  CHSC31632  Digitaria sanguinalis L. Ahart 1977-7-19 1481 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC104800  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the 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
  CHSC103934  Diplacus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CAS-BOT-BC150499  Diplacus grandiflorus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC51080  Diplacus jepsonii Pauleen Broyles 1987-7-5 1075 .5 Butte Ca 7 km n of Inskip. 1500 Comment
  CHSC4612  Diplacus kelloggii R. Carter 1966-4-11 329 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R.R. tracks on S side of river. Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CAS-BOT-BC151361  Diplacus tricolor Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC116523  Distichlis spicata B. Castro 2012-9-29 1987 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along The park road from its origin at Wildwood Ave. 132 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CHSC108592  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  HSC100796  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the W side of the Midway, W of the intersection of Midway and East Park Ave., Chico. 61 Comment
  CHSC108864  Dodecatheon clevelandii subsp. patulum Lowell Ahart 2012-3-2 17765 Butte Open flat area, on the west side of South Rim Trail, about 40 yards north of Bloody Pin Trail, about 2/4 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 244 Comment
  CHSC4625  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-3 290 Butte Found 4 mi. NE of intersection of Chico Rd. and Old Cherokee Rd., 15' from W side of Cherokee Rd. 243 Comment
  CHSC19937  Dodecatheon hendersonii M. S. Taylor 1975-3-10 414 Butte Along paths on bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC4174  Dodecatheon hendersonii Kathy Sommerstrom 1967-4-25 25 Butte Found 1/8 mi west of covered bridge, 100 yds from Butte Creek on South bank. 76 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
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  HSC23362  Dodecatheon hendersonii R. J. Swift 1970-3-25 10 Butte Along Honey Run Rd., ca. 2.2 mi. NE of Covered Bridge at entrance to McEnespy's Ranch 244 Comment
  UC1400616  Dopatrium junceum S. Galen Smith and Malcolm Nobs 1949-7-29 1085 Butte ca 5 mi w Richvale (formerly Richland) Comment
  UCD38751  Dopatrium junceum Beecher Crampton 1957-9-17 4622 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  SEINET10458513  Downingia bicornuta Lowell Ahart 1984-5-8 Ahart 4599 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC70790  Downingia bicornuta var. bicornuta B. Castro 1995-6-6 574 Butte Ca 4 air mi SE of Chico, W of Hwy 99, on E side of the Oro-Chico Hwy ca 0.3 mi N of its jcn with Neal Road. 53 Comment
  CHSC88966  Downingia bicornuta var. bicornuta Christine Hantelman 2000-5-3 71 Butte On west side of Meridian Road about 2 mi after turnoff from Hwy 99. In bottom of vernal pool. 57 Comment
  CHSC87196  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  CHSC182  Downingia insignis M. Underhill 1952-6-30 Butte Sacramento Valley. 54 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  UC1609088  Downingia ornatissima var. ornatissima Lowell Ahart 1993-5-17 6952 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC35013  Draba verna var. verna R. E. Preston 1982-3-6 186 Butte Dirt road, ridge on s side of canyon of Sycamore Creek; ca. 300 yds n of boundary of Upper Bidwell Park n of Horseshoe Lake, Chico. 182 Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UCD170794  Drosera rotundifolia Barry Rice 2017-9-4 BR- 170901 Butte Butte Creek. 1500 Comment
  CHSC109669  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  UC648311  Drymocallis hansenii Lewis S. Rose 1939-6-6 39234 Butte Strawberry Valley 1219 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC3500  Dryopteris arguta M. Gregg 1966-3-7 25 Butte Approx. 12.3 miles from CSC Ad. Bldg. Up Humbug Rd. off the Skyway across the covered bridge. Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CHSC86084  Dryopteris arguta R. D. Fischer; Paul Maslin 2003-12-24 19 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 200 yds west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  RSA755756  Dryopteris arguta L. Ahart 2009-5-23 15763 Butte About 30-40 yards west of Guardians, Trail, about 100 yards northeast of Pine Trial, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 2 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CAS-BOT-BC428076  Dudleya cymosa subsp. cymosa Lewis S. Rose 1945-5-12 45017 Butte Richardson Springs 304 Comment
  CHSC66666  Dysphania ambrosioides Vernon H. Oswald 1996-7-17 8064 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  UCSB64004  Dysphania ambrosioides Ahart, Lowell 1981-11-6 Butte A little west of the Gray Lodge Waterfowl Management Area Headquarters, about 3/4 mile west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  SBBG120022  Dysphania botrys L. Ahart 2006-9-11 13282 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, about 1/8 mi W of the Poe Dam, about 0.75 mi NE of Pulga, about 21 mi (air) NE of Oroville 431 Comment
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  RSA123459  Echinochloa crus-galli H. S. Yates 1936-8-19 6125 Butte Chico; 10 miles S. of Durham 30 Comment
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  UC203668  Echinochloa crus-galli A. A. Heller 1914-5-19 11418 Butte 8 mi n Oroville Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CHSC34025  Echinodorus berteroi L. Ahart 1981-7-26 3014 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt. HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC78831  Elatine ambigua Lowell Ahart 2000-10-19 8710 Butte Fallow rice field, on the north side of Lower Honcut Road, west of Wyandotte Creek, about 150 yards west of the railroad, 1 1/2 miles west of Honcut, about 13 miles south of Oroville. 26 Comment
  CHSC82222  Elatine ambigua Lowell Ahart 2002-4-15 9496 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC38434  Elatine brachysperma Vernon Oswald 1983-6-16 693 Butte Upper Bidwell Park, Chico in Horseshoe Lake. 100 Comment
  CHSC66357  Elatine chilensis Vernon H. Oswald 1996-6-20 7835 Butte Sacramento National Wildlife Refuge, Llano Seco Unit, U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  UC1100617  Eleocharis atropurpurea Malcolm A. Nobs and S. Galen Smith 1949-7-29 1083 Butte 5 mi w Richland Comment
  CHSC11930  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC55613  Eleocharis bella L. P. Janeway 1987-6-5 2143 Butte Small pool near confluence of Ram Creek and French Creek. 609 Comment
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 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
  UC1609054  Eleocharis bella Lowell Ahart 1993-7-13 7065 Butte 12 mi S of Oroville (bottom of a deep wash, Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  CHSC111159  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte on the sides of the small stream, 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 Mountainl, about 6 miles (air) north of Oroville. 273 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC102404  Eleocharis macrostachya Lowell Ahart 2009-6-30 15979 Butte On wet soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC37108  Eleocharis pachycarpa L. Ahart 1982-10-15 3887 Butte Sand bar along edges of North Honcut Creek, ca. 1 mi n and 2.7 mi e of Honcut. 50 Comment
  JEPS98506  Eleocharis pachycarpa Lowell Ahart 2000-8-30 8676 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC42381  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA716566  Eleocharis quinqueflora L. Ahart 2000-6-17 8488 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  CHSC46598  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-7-21 3879 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
  CHSC68449  Eleocharis suksdorfiana L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2499 Butte Coon Hollow, 1.0 mi southeast of the Humbug Summit Road. Meadows on north side of the creek. 1661 Comment
  JEPS117522  Eleusine indica Lowell Ahart 2010-9-24 17240 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore 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
  POM319562  Elymus Patricia Wilder 1971-6-23 5285 Butte Magalia: north of Paradise; Coutelenc Road, just north of junction with Skyway Road, along railroad track. West slope of Sierra Nevada Mt. Range 732 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
  CHSC4381  Elymus glaucus M. M. Gregg 1966-5-23 Butte CSC campus along Big Chico Creek. N of Life Science Building. Comment
  CDA13316  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada; Dry, sunny, sandy bank on USFS N60 approx. immed. E of bridge over Marble Creek. Steep, dry rocky area, slopes near vertical. Perennial, uncommon here. Comment
  CHSC96756  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2007-5-29 13936 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC28794  Enemion occidentale J. D. Jokerst 1979-3-31 183 Butte Just s of Little Chico Cr. Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  SEINET10453197  Epilobium brevistylum Lowell Ahart 1983-8-16 Ahart 4296 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
  CHSC117433  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC1163  Epilobium canum subsp. latifolium V. Holt 1932-10-2 Butte Forest Ranch. 548 Comment
  CHSC28527  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1979-8-4 2180 Butte Along Hwy 70 in ditch, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC28775  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-7-12 319 Butte 1.0 mi. W. of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  UCD105782  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-19 s.n. Butte Chico. Comment
  SEINET10452980  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC105515  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC46642  Epilobium densiflorum Lowell Ahart 1989-7-4 6361 Butte Mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC65170  Epilobium densiflorum Lowell Ahart 1995-8-19 7609 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS87376  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  UC1562331  Epilobium hallianum Vernon Oswald and Lowell Ahart 1990-6-27 4330 Butte Oro-Quincy Hwy 0.3 mi wnw Buckeye (site) (s edge of plains); Walker Plains 1536 Comment
  CHSC38064  Epilobium minutum R. E. Preston 1982-4-22 255 Butte Ca. 4 mi SW of Paradise. 286 Comment
  SEINET10841085  Epilobium minutum Lowell Ahart 1984-6-8 Ahart 4674 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 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
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  CHSC105791  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  JEPS120178  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC204457  Eragrostis cilianensis Willis H. Wheeler 1945-10-11 s.n. Butte U.S. Plant Introduction Garden, Chico Comment
  CHSC49542  Eragrostis cilianensis V. Oswald; R. Cunningham 1988-8-6 3682 Butte In s Chico, s of Park Ave., near the end of Paseo Campaneros. In the garden of Ruth and Glenn Cunningham. 64 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC102796  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  UC754020  Eremocarpus setiger H. F. Copeland 1937-7-30 1604 Butte near Oroville (arid roadside) Comment
  CHSC29982  Eremogone cliftonii Lowell Ahart 1980-5-29 2362 Butte 2.5 miles NE of Mountain House, short distance from Oroville-Quincy Highway. Along edge of dirt road. 1100 Comment
Read comments
Jul 8 2014
  CHSC35049  Eremogone cliftonii R. Schlising; R. Banchero 1981-6-29 4125 Butte NE part of county, 0.8 mi SW of Ramsey Bar on Little Kimshew Creek. Roadside. 1463 Comment
Read comments
Jul 8 2014
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  CAS-BOT-BC131666  Ericameria bloomeri J. D. Jokerst 1979-9-23 358 Butte Below summit of Humboldt Peak on west-facing slope 2042 Comment
  CAS-BOT-BC291275  Ericameria bloomeri H. F. Copeland 1920-8-25 206 Butte Jonesville 1219 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  SD5419  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 Butte Above Jonesville 1800 Comment
  CHSC94044  Erigeron inornatus var. inornatus R. D. Fischer 2005-9-7 708 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  POM33313  Erigeron inornatus var. inornatus C. C. Bruce 1897-05 1990 Butte Little Chico. Comment
  SD5417  Erigeron miser E. B. Copeland 1930-8-6 Butte Jonesville 1550 Comment
  CHSC5964  Eriobotrya japonica M. MacArthur 1968-6-18 208 Butte E side of Big Chico Creek, just S of bridge near PSA bld., Chico State College campus. 60 Comment
  SBBG119820  Eriochloa acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy, ca. 20 ft S of Palermo Rd, E part of Palermo 57 Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  CHSC20968  Eriogonum luteolum var. luteolum M. S. Taylor 1975-9-12 921 Butte Abundant along railroad tracks, ca. 1/2 mi n of Magalia. 609 Comment
  CHSC38611  Eriogonum luteolum var. luteolum Vernon Oswald 1983-8-2 947 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  SEINET7545219  Eriogonum marifolium E. B. Copeland 1930-1 410 Butte Above Jonesville 610 Comment
  NY323384  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville 2000 Comment
  CAS-BOT-BC261462  Eriogonum nudum var. nudum John Thomas Howell; Gordon H. True 1967-7-12 43384 Butte N. Fk. Feather River near Cresta Powerhouse 426 Comment
  CAS-BOT-BC261716  Eriogonum nudum var. oblongifolium Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CHSC30848  Eriogonum nudum var. pubiflorum M. S. Taylor 1980-9-12 3326 Butte At jct of Hwy 32 and Ponderosa Way, nw corner, ca. 1.5 mi n of Forest Ranch. 609 Comment
  CHSC32140  Eriogonum nudum var. pubiflorum L. Ahart 1977-10-19 1605 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in open pasture fields, it can also be found on small gravel bars along small washes and on dredger piles along North Honcut Creek. 50 Comment
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET11934611  Eriogonum nudum var. pubiflorum L. P. Janeway 1988-1 2967 Butte Pulga quad. nr. roadside into French Creek .6 mi S of Coyote Gap. Shaley SE-faceing ridge outcrop 1219 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC52112  Eriogonum spergulinum var. reddingianum L. P. Janeway; C. A. Janeway 1986-9-13 1857 Butte Near mdw of upper Willow Creek. 1950 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  CAS-BOT-BC265212  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 365 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CDA22699  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  CHSC100482  Eriogonum vimineum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC262343  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Peter Ahart Ranch, Honcut 50 Comment
  SFV3893  Eriophyllum lanatum B. Fuller 1962-5-5 s. n. Butte Sierra Nevada Paradise. At the intersection of Harrison and Stearns Roads. Beside road on rocky slope. 535 Comment
  UCR190825  Eriophyllum lanatum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET10474637  Eriophyllum lanatum Mary Susan Taylor 1975-4-11 Taylor 394 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CAS-BOT-BC301306  Eriophyllum lanatum var. croceum C. R. Quick 1951-6-9 51 100 A Butte Big Bar Mt. Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  POM53933  Eriophyllum lanatum var. grandiflorum A. A. Heller, H. E. Brown 1902-5-7 5483 Butte Berry Canyon (Near Clear Creek). Comment
  UC175162  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 mi n Oroville (ditch along Table Mountain); Table Mountain 182 Comment
  SEINET10475232  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2723 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET10475233  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2734 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC85819  Erodium brachycarpum Richard R. Halse 2002-3-27 6154 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  CHSC7118  Erodium moschatum J. Borgstrom 1969-4-23 8 Butte Abundant ca. 4 mi sw of Chico on Dayton Rd, 4 ft. on s side of road. 60 Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CAS-BOT-BC153863  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale grade about 5 miles from Paradise Comment
  CAS-BOT-BC153869  Erythranthe glaucescens Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  CHSC44736  Erythranthe guttata R. Banchero 1980-6-17 244 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC45091  Erythranthe lewisii L. P. Janeway; R. A. Schlising 1988-7-22 3059 Butte Southeast part of upper Coon Hollow. 1889 Comment
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 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
  CAS-BOT-BC150204  Erythranthe pulsiferae Lowell Ahart 1983-6-26 4161 Butte Along the edge of Bean Creek Road, about 4 1/2 miles south of Little Bald Rock, about 17 1/2 miles north-east of Oroville 600 Comment
  CHSC31344  Erythronium multiscapideum Leslie Steidl 1980-4-13 17 Butte Ca. 23 mi ene of Oroville, ca. 0.7 mi nne of Lumpkin Rd, ca. 0.25 mi w of Nutmeg Creek, ca. 5 yd e of a dirt road. 719 Comment
  CHSC32649  Erythronium multiscapideum M. S. Taylor; D. V. Hemphill 1981-3-18 3416 Butte N side of Pulga Rd, near its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC33565  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia. 853 Comment
  SEINET10839630  Erythronium multiscapideum Lowell Ahart 1983-4-14 Ahart 3934 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC99545  Erythronium purpurascens L. P. Janeway 2008-6-15 9418 Butte Northern High Sierra Nevada. Along Concow Road 1.1 road km southwest of Philbrook Road; north-facing slopes above the east end of Philbrook Reservoir. 1729 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  CAS-BOT-BC402646  Eschscholzia caespitosa Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 45 Butte On North Table Mtn., S of Paradise on Cherokee Rd., at the east end of Table Mtn. Proper 381 Comment
  CHSC1201  Eschscholzia californica P. Delaplane 1965-3-27 16 Butte In field on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  CHSC20114  Eschscholzia lobbii M. S. Taylor 1975-4-26 509 Butte Scattered in meadow on e side of Kunkle Reservoir, ca. 40 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC48614  Eucalyptus camaldulensis Vernon Oswald 1987-7-4 3090 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  UC1609300  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte about 1 mi e Snow Mountain (n side of ridge) 2072 Comment
  CHSC47044  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. At roadside spring. 1158 Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  RSA0020538  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76deg.) of Biggs 58 Comment
  CHSC42497  Fallopia convolvulus Lowell Ahart 1987-6-9 5722 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC109589  Festuca arundinacea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC278798  Festuca occidentalis Lowell Ahart 1984-6-10 4704 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC68916  Festuca subulata Lowell Ahart 1997-7-11 7756 Butte Along a stream, south of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC95173  Filago californica R. D. Fischer 2004-4-28 798 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the south end of Disc Golf Course. 396 Comment
  CHSC50409  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte Near the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd via the logging road just south of Cold Springs, ca. 0.5 mi (air) southwest of Humbug Summit. 1969 Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  RSA4661  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  SEINET10969447  Frangula purshiana Mary Susan Taylor 1981-5-21 Taylor 3758 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC53778  Frangula rubra Lowell Ahart 1989-5-29 6311 Butte About 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown 822 Comment
  SD10094  Frangula rubra E. B. Copeland 1931-7-28 Butte Jonesville; dry ridge west of North Willow Creek 1650 Comment
  RSA25677  Frasera albicaulis var. nitida Carl B. Wolf 1941-7-23 11053 Butte Northern Sierra Nevada, seven miles west of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC101743  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  JEPS119568  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC89005  Fritillaria eastwoodiae L. Hanson 1985-4-26 267 Butte Plumas National Forest. On 21N80 Rd. east of Galen Ridge. 792 Comment
  SEINET10905374  Fritillaria eastwoodiae Mary Susan Taylor 1981-4-27 Taylor 3559 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC33392  Fritillaria pluriflora Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County, off Cana-Pine Creek Road. 57 Comment
  CHSC4198  Fritillaria recurva J. E. Bowlin 1967-3-10 4 Butte Ca. 10 feet e of Cohasset Rd. and ca. 6.1 miles n of corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  CHSC76969  Fritillaria recurva Margie Collins 1894-5-1 Butte Forest Ranch. Comment
  CAS-BOT-BC508150  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  CHSC4070  Galium aparine H. E. Lindahl 1967-3-25 5 Butte 1/2 mi. S and 100 yds. W of forks of dry creek Pentz. 152 Comment
  CHSC28016  Galium bolanderi M. S. Taylor 1978-7-21 1801 Butte Ca. 1 mi N of Lake Madrone, on E side of Oroville-Quincy Hwy. 609 Comment
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  CHSC46405  Galium parisiense Lowell Ahart 1989-5-23 6259 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  JEPS120950  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  SEINET10500739  Galium porrigens var. tenue Mary Susan Taylor 1981-3-18 Taylor 3426 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  JEPS98530  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte on the SE side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) NE of Feather Falls. 1219 Comment
  SEINET10500750  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC73819  Galium triflorum B. Castro 1997-6-13 743 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1066 Comment
  CHSC99567  Galium triflorum L. P. Janeway 2008-6-22 9430 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC46929  Gamochaeta stachydifolia Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of 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. Comment
  CAS-BOT-BC282599  Gastridium phleoides Lowell Ahart 1977-5-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC97243  Gastridium phleoides Lowell Ahart 2007-6-3 13978 Butte On the east side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CDA38135  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC31051  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  UC426933  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville 1500 Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  JEPS115825  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS119709  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  SEINET10495123  Geranium dissectum Mary Susan Taylor 1982-4-28 Taylor 4353 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
  CHSC99007  Geranium molle Lowell Ahart 2008-5-21 14764 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS117289  Gilia capillaris Lowell Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC38591  Gilia capitata subsp. pedemontana Vernon Oswald 1983-5-18 503 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  CHSC90094  Gilia tricolor subsp. tricolor Elizabeth A. Ballou 1991-3-12 12 Butte About 40 m south of Butte Creek and 0.3 km west of Covered Bridge, 10.2 km east-southeast of Chico. 120 Comment
  CHSC96244  Githopsis pulchella subsp. campestris R. Fischer 2006-5-27 994 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  UC129448  Glechoma hederacea Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC302476  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 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
  CAS-BOT-BC302480  Gnaphalium palustre Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC45004  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC66072  Gnaphalium palustre Vernon H. Oswald 1996-5-22 7620 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  CHSC94623  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 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
  CHSC28684  Goodyera oblongifolia M. S. Taylor 1979-9-9 1920 Butte Inskip on the Skyway. 1467 Comment
  JEPS118067  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC112904  Gratiola ebracteata B. Castro; Robin Carter 2011-4-29 1876 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  SD111956  Gratiola ebracteata Barbara Ertter, Jeffrey Strachan 1980-5-5 3266 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of the house, ditch 29 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  UCR219266  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC109661  Gymnocladus dioicus Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 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
  UC119829  Hastingsia alba Mrs. R. M. Austin July 1896 799 Butte Colby Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  CHSC84103  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CAS-BOT-BC306294  Hedypnois cretica Peter H. Raven 1953-5-9 5452 Butte 3.3 miles from Bangor on road to Oroville Comment
  CHSC64037  Helenium bigelovii S. C. Morey 1983-8-4 717 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC50988  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte On the north side of the old paved road to Feather Falls, below the high water line of Lake Oroville, west of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 268 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  RSA771482  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte 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
  CAS-BOT-BC305847  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 mile north of Highway 162, about 2 1/2 miles north-west of Biggs 28 Comment
  SEINET10474721  Hemizonia parryi subsp. rudis Mary Susan Taylor 1982-4-28 Taylor 4345 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
  JEPS105997  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC44632  Hesperevax acaulis var. ambusticola Vernon Oswald 1986-5-6 1998 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CAS-BOT-BC310158  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  CHSC29045  Hesperevax caulescens R. Schlising 1980-4-14 3562 Butte Richvale vernal pools, 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UCD133079  Hesperevax caulescens L. Ahart 1974-5-20 458 Butte Ahart Ranch, Honcut. 45 Comment
  JEPS104299  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  SD2744  Hesperolinon micranthum E. B. Copeland 1931-7-12 Butte Jonesvill. Dry bare ridge between Jones and North Willow Creeks. 1700 Comment
  SEINET10469503  Heteranthera limosa Lowell Ahart 1991-7-21 Ahart 6669 Butte About 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  CHSC84637  Heteromeles arbutifolia Matt Quinn 2001-3-6 14 Butte Along Green Gate Road (10-mile House Road) on north facing slope on Big Chico Creek Canyon. Approximately 1/4 mile downslope from Highway 32. 365 Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CAS-BOT-BC311010  Heterotheca oregona John Thomas Howell 1959-9-26 35087 Butte Cuesta Power House, North Fork of Feather River 426 Comment
  SEINET10483022  Heuchera micrantha var. erubescens Mary Susan Taylor 1980-5-27 Taylor 2685 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UCD133134  Hieracium albiflorum Robert C. Burness 1970-5-23 62 Butte on around 15* slope, around 6 miles southeast of Stirling City on Ragdump Road. 762 Comment
  CHSC102832  Hirschfeldia incana Lowell Ahart 2009-6-19 15939 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  RSA443115  Hoita macrostachya L. Ahart 1985-7-9 5107 Butte About 1 miles south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles northwest of Forbestown. 549 Comment
  CDA2179  Holcus lanatus L. Ahart 2000-7-17 8594 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  CHSC34790  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CHSC44570  Holcus lanatus Lowell Ahart 1979-6-9 1930 Butte East of Kunkle Creek, about 2 miles south-east of Paradise. 457 Comment
  CHSC45112  Holocarpha virgata Lowell Ahart 1976-9-7 1195 Butte Along the edge of Palermo Honcut Highway, about 1/2 mile north of Honcut. 33 Comment
  CHSC12003  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. On mountain top. 2000 Comment
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CHSC71214  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte About 3/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 388 Comment
  CHSC33682  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Along edge of rd in Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC3923  Hordeum jubatum A. K. Revard 1967-4-15 16 Butte In ditch, ca. 12 ft. s of Royles Rd., ca. 2 mi w of Hwy. 99, and ca. 19 mi n w of Chico. 60 Comment
  CHSC42373  Hordeum marinum subsp. gussoneanum Lowell Ahart 1987-5-6 5563 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS115819  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south 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
  CHSC101273  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC82710  Hordeum murinum subsp. leporinum Tara Morgan 2002-4-23 47 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  UCD113567  Horkelia tridentata var. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  HSC100730  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  UC176927  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  SEINET10720066  Hypericum anagalloides A. Arthur Heller 1914-8-6 Heller 11637 Butte Chico Meadows. 1219 Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC104855  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
  CHSC31958  Hypericum perforatum J. D. Jokerst 1979-7-6 404 A Butte Top of North Table Mt., bottom of dry, vernally moist depression ca. 300 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  UC204399  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte hills ca. 5 mi. e. Oroville (also between Red Bluff & Redding, and in Sacramento canyon some miles below Delta <in> Shasta Co.) Comment
  CAS-BOT-BC401220  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10472151  Hypericum perforatum Mary Susan Taylor 1975-6-25 Taylor 792 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
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC30304  Hypochaeris glabra M. S. Taylor 1980-5-27 2682 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CDA2760  Ipheion uniflorum R. Bell-Booth 1962-3-28 Butte 656 E. 5th Street, Chico. 0 Comment
  CAS-BOT-BC133511  Iris John Thomas Howell 1955-6-14 30470 Butte De Sabla Comment
  CAS-BOT-BC133558  Iris hartwegii Lewis S. Rose 1937-6-10 37373 Butte Forbestown 838 Comment
  CAS-BOT-BC133562  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  SEINET10227046  Iris hartwegii N. J. Fashing 1964-3-14 22 Butte n. side of Humbug Rd., ca. 10 yds off road and 5 mi. se. of Chico Comment
  UCD138745  Iris hartwegii N. Kvasnik 1980-4-20 12 Butte Butte Creek Canyon, Covered Bridge. East side of creek, south of bridge. Comment
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC52480  Iris macrosiphon Jan M. Karaz 1979-5-13 17 Butte 1.2 mi N of Forest Ranch on hwy 32 at top of the ridge. Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  RSA137407  Iris tenuissima subsp. purdyiformis Lee W. Lenz, E. K. Balls 1957-5-22 22515 Butte Tobins, North Fork Feather River, U.S. Highway 40 alt. 640 Comment
  CHSC115682  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern HighSierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approx. 0.25 miles north of its intersection with Ponderosa Way. 731 Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  CAS-BOT-BC69979  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CAS-BOT-BC61870  Isoetes nuttallii Lowell Ahart 1983-6-12 4046 Butte 7 miles south-west of Feather Falls, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC30989  Isoetes nuttallii M. S. Taylor 1980-3-15 2382 Butte Ca. 1/4 mi s of Pentz rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC44626  Isoetes nuttallii Vernon H. Oswald 1987-4-22 2343 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, ne of Hwy 99. 67 Comment
  JEPS122226  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 -A Butte About one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  UC1586564  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1991-6-5 4641 Butte ca 1.5 air mi nw Platte Mt Lookout (between Forest Ranch and Lomo, dirt rd to Minnie-Ha-Ha Mine on Big Chico Creek on w side of Hwy 32) 853 Comment
  CAS-BOT-BC112444  Isolepis cernua Lowell Ahart 1980-5-12 2259 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 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
  CHSC102742  Juglans californica var. hindsii Lowell Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  JEPS113851  Juncus Lowell Ahart 2007-6-12 14079 Butte Along the 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
  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
  CHSC116018  Juncus articulatus subsp. articulatus Lowell Ahart 2015-10-20 20576 Butte On the west side of the Feather River, about halfway of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  UC1562288  Juncus bufonius Lowell Ahart 1990-7-4 6545 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (along McCabe Creek); Lake Oroville, McCabe Creek 243 Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. Comment
  JEPS114380  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 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
  JEPS122227  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 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
  CHSC47542  Juncus capitatus Lowell Ahart 1980-5-13 2264 Butte An open pasture field, 1/2 mile south-west of Kunkle Reservoir, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC49608  Juncus cyperoides Vernon Oswald 1985-6-15 1837 Butte Black Bart Rd., 0.7 mi sw of Forbestown Rd. 662 Comment
  RSA0118712  Juncus cyperoides Lowell 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. 731 Comment
  CDA2697  Juncus diffusissimus L. Ahart 2000-7-18 8596 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  SEINET5716466 Image available Juncus effusus Lowell Ahart 1985-1 5086 Butte About 2.5 mi. NE of Forbestown. 10 yds. S of dirt rd. to the Forbes town Res.; Forbestown 869 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  JEPS118084  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. Meadow in Yellow Pine Forest 1133 Comment
  SEINET10472477  Juncus effusus var. pacificus Lowell Ahart 1983-8-16 Ahart 4299 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
  CHSC69728  Juncus ensifolius Lowell Ahart 1997-10-20 7928 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 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
  CHSC96971  Juncus ensifolius Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14279 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville. 1024 Comment
  CHSC92951  Juncus exiguus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet. 969 Comment
  CHSC32585  Juncus kelloggii L. Ahart 1980-5-11 2240 Butte In a pasture field on the w side of the Pentz-Magalia Hwy, ca. 1/2 mi nw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  CHSC39889  Juncus leiospermus M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5407 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC47560  Juncus leiospermus Lowell Ahart 1984-5-7 4589 Butte On the east side of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET3069038 Image available Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca 2 miles north and 1/2 mile east of Honcut, between Marysville and Oroville 50 Comment
  CAS-BOT-BC110136  Juncus leiospermus var. leiospermus J. D. Jokerst 1979-5-2 1227 A Butte On top of North Table Mountain, ca. 200 meters south of Cherokee Road along the east edge of section 17, southwest of benchmark 1263. 396 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  OBI32868  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Strachan, Lowell Ahart 1980-5-7 3309 Butte North Table Mountain 5 airmiles N of Oroville, wet soil along streamlet trodden by cattle and near parking area. 396 Comment
  CHSC59023  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CHSC43792  Juncus orthophyllus Vernon Oswald; Lowell Ahart 1987-7-1 3086 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Along the streamlet draining the small lake northward into Butte Creek. 1935 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC49623  Juncus oxymeris Vernon Oswald 1987-5-18 2910 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  UCSB63745  Juncus tenuis Ahart, Lowell 1998-6-3 Butte T20N, R4E, NE 1/4 Sec. 17; NW of the cow chute along Cherokee Rd; North Table Mtn; about 7 mi (air) north of Oroville 403 Comment
  CHSC39333  Juncus trilocularis Lowell Ahart 1983-6-26 4135 Butte Along the edge of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC28980  Juncus uncialis R. A. Schlising 1980-3-17 3517 Butte SE of Chico, along Skyway. Vernal pools. 70 Comment
  CHSC47577  Juncus uncialis Lowell Ahart 1983-4-10 3931 Butte On the sides of small vernal pools, near the steel power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 60 Comment
  JEPS124333  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET194312  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Near rd above a mi from jct w/ Oroville Rd 137 Comment
  SEINET10547832  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-5-15 Taylor 2622 Butte N of Chico along Cohasset Road. Comment
  CHSC44722  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-17 251 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  CAS-BOT-BC237825  Keckiella lemmonii John Thomas Howell; Gordon H. True 1967-7-12 43385 Butte North Fork of Feather River near Cresta Powerhouse 426 Comment
  POM183167  Kelloggia galioides H. F. Copeland 1930-7-21 1327 Butte Jonesville. 1524 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
  CDA6295  Kickxia elatine L. Ahart 2002-10-17 9993 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC83090  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On 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
  SD239921  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley: Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi ENE (76a^z) of Biggs. 57 Comment
  SEINET10782598  Kickxia elatine Lowell Ahart 1990-6-16 Ahart 6513 Butte Near the Forbestown Generator, on the south-east side of the Forbestown Reservoir. T20N R7E NW/S33. 488 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1594708  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  CHSC94351  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA20618  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilatatum, 282 Chico Rd, Oroville. 0 Comment
  CHSC92058  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CAS-BOT-BC340448  Lactuca saligna Lowell Ahart 1978-9-28 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  CHSC100986  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC42274  Lamium amplexicaule L. P. Janeway 1987-4-14 2004 Butte Oroville, Thermalito Forebay North Picnic Area. 70 Comment
  SEINET3450912  Lasthenia californica Unknown 2003-4-10 10052 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CAS-BOT-BC354125  Lasthenia fremontii Gordon H. True 1971-4-8 6442 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles SW of Gridley. 24 Comment
  UCSC004639  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  SEINET9327375  Lasthenia fremontii Unknown 1988-4-20 303 Butte Near Chico, along hwy 99 in pasture, 2.5 km S of Meridien Rd. on E side of the rd Comment
  CHSC77987  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS122007  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC213342  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  CHSC111151  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  RSA4423  Lathyrus nevadensis subsp. lanceolatus E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  RSA726479  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte About 1.5 miles northwest of Concow Creek, about 1.5 miles west of Concow Reservoir. 358 Comment
  SD122540  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along Ponderosa Way, ca. 1/8 mile west of Ponderosa Dam, ca. 2 miles NW of Forbestown 370 Comment
  SEINET10973184  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1091 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
  CDA32004  Lathyrus tingitanus L. Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CAS-BOT-BC321778  Layia fremontii E. B. Copeland 1903-4-11 s.n., distributed as Baker's 3039 Butte Chico Comment
  CHSC69714  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC38374  Leontodon saxatilis subsp. saxatilis Vernon Oswald 1983-4-25 378 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east intermittent stream feeding into Sycamore Creek. 365 Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  RSA719538  Lepechinia calycina Michael A. Vincent 2006-7-29 12881 Butte East of Chico along Rt. 32. Comment
  SEINET516280  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte W side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 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
  JEPS87616  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC89878  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC101269  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
  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
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC29411  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3695 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  CHSC1287  Leptosiphon filipes P. Delaplane 1965-4-6 36 Butte Ca. 100 yds. e. on Richardson Springs road from intersection with Cohasset Road., Chico. 243 Comment
  CHSC30791  Leptosiphon filipes M. S. Taylor 1980-5-27 2677 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC40749  Leptosiphon filipes A. A. Heller 1938-6-14 15154 Butte 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  CHSC105814  Leptosiphon 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
  CHSC33248  Leptosiphon harknessii R. A. Schlising; R. Banchero 1980-7-14 3901 Butte N end of Snag Lake in N part of county. Meadows. 1731 Comment
  CHSC112039  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  SEINET10474779  Lessingia nemaclada Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4179 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CAS-BOT-BC342059  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  JEPS17913  Lessingia virgata Rimo Bacigalupi with G. T. Robbins 1955-7-22 5442 Butte 2.5 mi s Oroville (n-facing hillside along Calif. Hwy. no. 24, at junction of road to Palermo) 48 Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC97256  Lewisia cantelovii Lowell Ahart 2007-5-16 13894 Butte On the east side of Highway 70, about 150 yards no ... Field redacted by CHSC, contact the data manager for more information 463 Comment
  CHSC10792  Lewisia rediviva Lowell Ahart 1968-3-17 Butte Table Mountain, Oroville. 243 Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CDA13279  Ligusticum grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13127 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  SD6538  Lilium Unknown 1882-7-14 Butte Sutton House. Comment
Read comments
Jul 3 2010
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  CHSC46225  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1059 Butte Ca 2.0 km s. of Inskip of w. side of Skyway. 1400 Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  RSA700274  Limnanthes alba T. W, Henrich 2004-12-4 s.n. Butte Chico, Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC118035  Limnanthes alba subsp. alba Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 225 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC82290  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC1007  Limnanthes alba subsp. versicolor V. Holt 1942-4-25 Butte Nimshew grade. 365 Comment
  CHSC2388  Limnanthes alba subsp. versicolor R. Carter 1965-4-12 178 Butte Found 7.5 mi. E of Oroville, 20 yds. from gate at end of Feathervale on N side of road. 274 Comment
  CHSC96368  Limnanthes douglasii subsp. nivea R. L. Macdonald; C. L. Owens 2006-4-6 Butte Sacramento Valley. Openshaw Ranch BCAG mitigation area; 7 miles north of Oroville, 0.9 miles northwest of junction Hwy 149 and Hwy 70 (Wicks Corner), 650 ft northeast of Openshaw Rd. 81 Comment
  HSC43087  Limnanthes douglasii subsp. rosea Maralyn O'Meara 1974-4-20 292 Butte Table Mtn. 305 Comment
  UC869486  Limnanthes douglasii subsp. rosea A. A. Heller 1917-4-15 12679 Butte ten mi n Chico 64 Comment
  SBBG17309  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Rd near Table Mtn Comment
  CHSC48594  Limnanthes floccosa subsp. californica Vernon Oswald 1984-3-24 1104 Butte Chico Municipal Airport, ca. 200 ft n-e of the e end of Piper Ave. 82 Comment
  HSC85944  Limnanthes floccosa subsp. californica J. Hunter 1986-3-30 39 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  HSC93614  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 487 Butte 50 m NW of Jct. of Bruce Rd. and Skyway, SE side Chico. Comment
  CHSC67558  Limnanthes floccosa subsp. floccosa James D. Jokerst 1980-3-27 519 Butte E of Cohasset Hwy. at Chico Municipal Airport. 67 Comment
  UCD116433  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  JEPS122228  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS115626  Linanthus ciliatus Lowell Ahart 2009-5-15 15678 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
  UC449800  Linanthus ciliatus Mrs. R. M. Austin Mar 1896 828 Butte Colby Comment
  SEINET12329568  Linanthus ciliatus L. Ahart, Ahart, P. 1984-1 4645 Butte about 1 mi NE of the West Branch Bridge, ca 2 mi S of Old Yankee Hill, ca 16 mi NE of Oroville 450 Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 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
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  UC907829  Linanthus parviflorus P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway up Hunnicut road) Comment
  CHSC35091  Linanthus pungens R. A. Schlising; R. Banchero 1980-7-28 3930 Butte E of Jonesville, on road toward Scotts John Creek. 1889 Comment
  CDA14464  Lindernia dubia var. anagallidea G. D. Barbe, June McCaskill 1990-9-5 4393 Butte Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  SEINET12186044  Linum micranthum Unknown 1983-1 4286 Butte near Humboldt Rd., 3 mi SW of Butte Meadows, Yellow Pine Forest 1450 Comment
  CHSC38910  Lipocarpha aristulata Vernon Oswald 1983-7-8 841 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC1135274  Lithocarpus densiflorus C. G. Albertus 1933-7-25 51 Butte 1 mi n Powellton; Chico Quad. 1097 Comment
  SEINET12219412  Lithophragma affine Unknown 4 s.n. Butte no further locality Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CAS-BOT-BC432269  Lithophragma campanulatum A. A. Heller 1915-6-10 11955 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC60587  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1993-4-19 5276 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. Near the trailhead on Jordan Hill Rd. 707 Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CHSC48896  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-5-14 2397 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC3405  Lithophragma parviflorum Alice L. Stoll 1966-3-26 81 Butte On Humbug Road near the Covered Bridge on way to Paradise. Comment
  CHSC51107  Lithophragma parviflorum var. trifoliatum Gerald A. Winter 1989-4-15 12 Butte Ca. 100 yds w of Cherokee Road on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  RSA176430  Lithophragma parviflorum var. trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek E of Chico near the Honey Run grade bridge. Comment
  UCR64605  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville 1677 Comment
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  UC726873  Lomatium caruifolium var. denticulatum A. A. Heller 1941-4-14 16065 Butte 4 mi. n. Biggs (along U.S. Hwy. 99E) Comment
  UC765468  Lomatium caruifolium var. denticulatum R. F. Hoover 1938-4-24 3238 Butte 3 mi. n. Chico Comment
  CHSC42604  Lomatium dasycarpum subsp. tomentosum Vernon Oswald 1985-4-28 1724 Butte Upper Bidwell Park, Chico, 100 ft w of Parking Area P. (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC38738  Lomatium macrocarpum Vernon Oswald 1983-3-7 132 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at the barbed-wire fence (ca. 0.2 mi w of the power lines). 121 Comment
  CHSC42613  Lomatium macrocarpum Vernon Oswald 1985-4-16 1720 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. Comment
  RSA724932  Lomatium marginatum L. P. Janeway 2006-5-14 8596 Butte Northern High Sierra Nevada: just west of Jordan Hill Road, 0.9 km east of Sawmill Peak lookout 953 Comment
  CHSC102191  Lomatium marginatum var. purpureum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  SEINET10454536  Lomatium utriculatum Mary Susan Taylor 1980-4-27 Taylor 2569 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  UC190774  Lonicera conjugialis Mrs. R. M. Austin July 1896 Butte Colby Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CAS-BOT-BC240450  Lonicera hispidula Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  CHSC83000  Lonicera hispidula Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CAS-BOT-BC240683  Lonicera interrupta Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut. Near Honcut Creek 50 Comment
  CAS-BOT-BC240689  Lonicera interrupta Lewis S. Rose 1945-5-12 45034 Butte Richardson Springs 304 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  CHSC51218  Lonicera involucrata var. involucrata L. P. Janeway 1987-6-19 2245 Butte Strawberry Valley Cr at crossing of Barton Hill Rd 2.4 mi from Travis Saddle and the Challenge-LaPorte Rd. 1051 Comment
  JEPS124027  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC200895  Lotus Marcus E. Jones 1911-6-26 s.n. Butte Oroville Comment
  CDA13829  Lotus corniculatus G. F. Hrusa, T. D. Wilfred 1996-9-5 13557 Butte Butte Basin; Bank of Butte Creek immed. below Western Canal District Dam. Comment
  CHSC65167  Lotus corniculatus Lowell Ahart 1995-8-19 7612 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  UC204729  Lotus humistratus A. A. Heller 1914-5-8 11377 Butte the Clear Creek to Paradise grade Comment
  SEINET10451974  Lotus humistratus Lowell Ahart 1983-5-28 Ahart 4022 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 Comment
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  SEINET2062315 Image available Lotus oblongifolius Marc Mittleman 1980-8-1 226 Butte Little Chico Creek adjacent to china Garden Springs. 262 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  UCD66040  Ludwigia hexapetala B. J. Grewell 2005-10-13 05- 37 -LU Butte Upper Butte Wildlife Area, Little Dry Creek Unit, Dept of Fish and Game, Colusa - Gridley Hwy. 20 Comment
  CHSC25320  Ludwigia peploides subsp. peploides Hayes; Warner, Schlising 1977-8-23 46 Butte Found in canal at Gray Lodge State Wildlife Refuge. 50 Comment
  RSA0036525  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  UC727111  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along the Feather River Highway between Pulga and Arch Rock Tunnel; Feather River Highway btw Pulga and Arch Rock Tunnel Comment
  POM27143  Lupinus albicaulis var. shastensis Marcus E. Jones 1897-7-9 s.n. Butte On road from Ptrattville to Chico at Jonesville. 1524 Comment
  CHSC38504  Lupinus albifrons Vernon Oswald 1983-4-1 252 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  SEINET10452616  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CAS-BOT-BC201363  Lupinus albifrons var. albifrons Carl B. Wolf 1933-5-23 4903 Butte W. slope Sierra Nevada. 4 3/10 mi. No. of San Andreas on road to Mokelumne Hill 365 Comment
  CHSC109065  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of the South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  CAS-BOT-BC196246  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  CHSC39976  Lupinus andersonii L. Ahart; P. Ahart 1983-7-29 4250 Butte Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  RSA325884  Lupinus andersonii var. andersonii L. Ahart, P. Ahart 1983-7-29 4250 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  UC398928  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte above Jonesville; above Jonesville 2000 Comment
  CAS-BOT-BC196336  Lupinus argenteus var. argenteus J. D. Jokerst 1980-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Cr. 609 Comment
  CHSC90489  Lupinus bicolor Steve Alvarez 1980-3-24 17 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  CHSC26255  Lupinus bicolor var. tridentatus John Steiner 1977-4-23 58 Butte Growing adjacent to s bank of Chico Creek at e end of Chico Canyon Rd. 65 Comment
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  POM23581  Lupinus densiflorus var. densiflorus C. C. Bruce 1897-05 2033 Butte Butte Creek. Comment
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC34689  Lupinus nanus M. S. Taylor 1981-5-5 3601 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. 457 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  CHSC96420  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC3251  Lupinus nanus var. apricus Virginia Hagaman 1966-3-28 90 Butte Table Mountain. 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
  SEINET10484149  Lupinus nanus var. vallicola Mary Susan Taylor 1980-5-27 Taylor 2720 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  JEPS124190  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  CHSC38513  Lupinus polycarpus Vernon Oswald 1983-3-31 237 Butte Upper Bidwell Park, Chico, near the s-w edge of the parking lot at Salmon Hole (1.4 mi e of the power lines). 152 Comment
  SBBG128005  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte ca. 70 yards E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  HSC66333  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Blad Rock Rd., 1 mi. E of Lake Madrone 671 Comment
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  CAS-BOT-BC329251  Lupinus vallicola Lowell Ahart 1980-5-17 2310 Butte Sierra Nevada. 0.5 mi SE of Hurleton. 600 Comment
  SEINET10874126  Lupinus vallicola Mary Susan Taylor 1974-3-26 Taylor 95 Butte Ca. 1 mi E of Old City Dump, on Humboldt Rd, ca. 3 mi E of Chico; soil wet, rocky clay. Comment
  CHSC116230  Luzula cascadensis Lowell Ahart 2015-6-16 20240 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC53714  Luzula macrantha L. P. Janeway 1988-7-2 2948 Butte At upper reach of Brush Creek, ca 1/5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS94068  Luzula parviflora Vernon H. Oswald and Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi. n. of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC43263  Lycopersicon esculentum Lowell Ahart 1987-9-24 5904 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC80018  Lythrum hyssopifolia L. P. Janeway; B. Castro 1999-6-4 6453 Butte Sacramento Valley. East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. 30 Comment
  CHSC68836  Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte On the south side of Wyman Ravine, on the west side of Lone Tree Road, about 6 miles south of Oroville. 36 Comment
  CHSC96034  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  CHSC84327  Madia elegans subsp. densifolia Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC101120  Madia elegans subsp. vernalis Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC101833  Madia exigua Lowell Ahart 2009-5-23 15757 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
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC342962  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC342958  Madia gracilis A. A. Heller No date on label 12816 Butte Butte Meadows 1402 Comment
  CHSC66293  Maianthemum racemosum Lowell Ahart 1996-6-5 7683 Butte About 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC63975  Maianthemum stellatum B. Castro; L. Gehrung 1994-5-18 512 Butte On Watson Ridge, ca 50 ft below USFS Rd 21N25. 1152 Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  JEPS104135  Malva nicaeensis Lowell Ahart 2003-5-9 10121 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC38549  Malva parviflora Vernon Oswald 1983-5-2 406 Butte Upper Bidwell Park, Chico, along n-w edge of Hooker Oak Recreation Area. 79 Comment
  JEPS95294  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  UC196260  Marah fabacea A. A. Heller 1914-3-12 11193 Butte Canyon of Big Chico Creek 76 Comment
  RSA0028781  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC67816  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC5140  Marsilea vestita P. Delaplane 1965-3-23 45 Butte H. Wurlitzer Ranch; ca. 13 mi. NW of Chico, W of Hwy 99E N. Butte Co. 60 Comment
  CHSC7074  Marsilea vestita Bryan C. Willingham 1969-4-20 15 Butte N side of Skyway, next diversion canal, 3 mi se Chico. 91 Comment
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 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
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  HSC23410  Meconella californica G. G. Poulsen, Jr. 1971-3-2 2 Butte 200 yards off Honney Run Rd., 100 yds. past Covered Bridge on hill facing Butte Creek 91 Comment
  UCD95462  Meconella californica Dana J. LeNarz 1982-4-8 11 Butte 60m SE of Butte Creek, vic. Covered Bridge, ca. 9.7 km SE of Chico. 122 Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  CHSC42528  Medicago lupulina Lowell Ahart 1987-5-6 5524 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC90815  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
  UCD106751  Medicago rigidula P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC116524  Melia azedarach B. Castro 2013-4-25 1993 Butte Sacramento Valley. Just N of Chico, on W edge of Hwy 99 ca 150 ft N of its jcn with Wilson Landing Rd. 54 Comment
  CHSC88189  Melica aristata Lowell Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS103561  Melica aristata Lowell Ahart 2002-6-21 9745 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  UCR115068  Melica aristata G. Fred Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Near Old Railroad Grade Road, Paradise Lake Dam, c. 3 m. north of Magalia 800 Comment
  UCD86345  Melica bulbosa Copeland 1931-6-22 606 Butte Jonesville. 609 Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CHSC86530  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  UCD86412  Melica californica Mrs. R. M. Austin 1896-5-1 52 Butte Little Chico Creek. Comment
  SEINET10968169  Melica californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4108 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  UC600751  Melica fugax H. F. Copeland 1932-6-29 Butte between Jones Creek and Willow Creek; Jonesville Comment
  CHSC39278  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) 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
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 294 Comment
  UC1191789  Mentha canadensis Herbert L. Mason and Verne Grant 1946-8-14 13032 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC38540  Mentzelia laevicaulis Vernon Oswald 1983-8-2 946 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  CHSC42936  Mentzelia laevicaulis Lowell Ahart 1987-7-3 5783 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4219  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; on slope ca. 25 yds. up slope on S side canyon. Comment
  LA209006  Micranthes integrifolia E. B. Copeland; 1929-7-20 369 Butte Jonesville 1550.0 Comment
  CHSC116965  Micropus californicus Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Spillway. 118 Comment
  UCD80103  Microseris acuminata CNPS SN Foothill Team 2005-4-15 SNFN 0081 b Butte City of Chico, Doe Mill Meadowfoam Preserve, ~50 m from the western boundary and ~70 m from the northern boundary. 85 Comment
  CHSC48185  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3293 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence line. 54 Comment
  CHSC40487  Microseris lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  HSC32632  Mimulus angustatus Gary S. Lester 1974-4-20 107 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  UCD122319  Mimulus aurantiacus var. grandiflorus J. I. Mallory 1968-5-29 288 Butte 3/4 mile northwest of Union Hill. 579 Comment
  JEPS121944  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC118882  Mimulus glaucescens Christopher T. Ivey 2017-5-27 391 Butte Honeyrun Road, about 6 km NE of bridge crossing Butte Creek, roadside ditch on S side or road. 424 Comment
  HSC73003  Mimulus glaucescens M. S. Taylor 1981-7-10 4061 Butte N side of Feather River, Hwy. 70 at Pulga bridge, ca. 20 mi. NE of Oroville 488 Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  JEPS5550  Mimulus glaucescens R. F. Hoover 1936-5-21 1158 Butte 3 mi n Chico Comment
  UC103699  Mimulus glaucescens R. M. Austin Apr, 1883 213 Butte Little Chico Creek Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  SEINET10570229  Mimulus glaucescens Lowell Ahart 1985-5-6 Ahart 4934 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  JEPS4206  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte Table Mountain 304 Comment
  CHSC44808  Mimulus moschatus R. Banchero 1980-6-6 201 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  JEPS95802  Mimulus pilosus Lowell Ahart 1999-8-13 8133 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  SEINET10929276  Mimulus pilosus Lowell Ahart 1984-8-19 Ahart 4780 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS86934  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte nw De Sabla (0.25 mi ne of Doe Mill Road along Garland Road) 600 Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  UC56384  Mimulus tricolor Mrs. R. W. Summers 1886-5 Butte Comment
  HSC68100  Minuartia californica J. P. Smith 1973-3-22 5907 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  CHSC93501  Minuartia cismontana Lowell Ahart 2006-5-8 12591 Butte About 200 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. 347 Comment
  CHSC33106  Minuartia douglasii M. S. Taylor 1981-5-15 3738 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Hwy 70. 1219 Comment
  CHSC62724  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte Serpentine ridge, south of Serpentine Point and above Hwy. 70. 518 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
  UCSB44145  Minuartia douglasii 1979-5-13 Butte 0.7 miles west on Lunt Road from Highway 70 Comment
  SEINET10537577  Minuartia pusilla Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5241 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  POM274266  Mitella breweri J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. 1829 Comment
  JEPS98286  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte 10 air miles NE of Oroville (S side of the dirt road, S side of the Oak Grove Cemetery, about 1/2 mi SE of Hurleton) 548 Comment
  CHSC42101  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET10866406  Mollugo verticillata Mary Susan Taylor 1980-6-29 Taylor 2995 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC314187  Monardella odoratissima subsp. pallida E. B. Copeland 1927-7-7 s.n. (distributed as UCBerkeley's 452 ) Butte Jonesville. 1550 Comment
  CAS-BOT-BC220452  Monardella sheltonii Lewis S. Rose 1951-6-26 51019 Butte Jarboe [Jarbo] Pass, 22 mi. n. of Oroville 579 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  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
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  UC1221752  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 mi nw of Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CHSC46731  Montia fontana subsp. amporitana Lowell Ahart 1973-3-7 164 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  POM101998  Montia parvifolia C. C. Bruce 1898-05 1777 Butte [Unspecified] Comment
  SEINET10830264  Montia sibirica var. heterophylla Mary Susan Taylor 1978-7-19 Taylor 1736 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC109628  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CHSC3376  Morus alba Robert L. Smith 1966-3-30 52 Butte Paradise. Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CAS-BOT-BC260532  Muhlenbergia filiformis Lowell Ahart 1983-8-16 4305 Butte 3 miles S of Butte Meadows, near Bull Hill Road 1600 Comment
  CHSC47698  Muhlenbergia filiformis Lowell Ahart 1989-9-21 6395 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC64259  Muhlenbergia filiformis S. C. Morey 1983-8-1 650 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. Meadow. 1292 Comment
  JEPS100187  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC34054  Muhlenbergia richardsonis L. Ahart; M. S. Taylor 1981-8-15 3040 Butte On bottom of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC21042  Muhlenbergia rigens M. S. Taylor 1975-10-4 963 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  JEPS113276  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  SEINET10965657  Myosurus minimus var. apus Lowell Ahart 1991-5-20 Ahart 6656 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  SEINET10899320  Myosurus minimus var. filiformis Mary Susan Taylor 1980-3-28 Taylor 2398 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  SEINET946111  Myriophyllum brasiliense Lowell Ahart 1987-1 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 610 Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  UCD138156  Najas guadalupensis subsp. guadalupensis Verne Grant; Herbert L. Mason 1946-8-15 13047 Butte near caretaker's house, Greylodge Game Refuge. Comment
  SEINET12050272  Narthecium californicum L. Ahart, Ahart, P. 1984-1 4760 Butte about .5mi E of Bald Mt., about 5mi NE of Stirling City 1750 Comment
  UCD87723  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Buttte County: Comment
  CHSC35112  Navarretia capillaris R. Schlising 1980-6-20 4102 Butte NE part of county at Jones Meadow. 1767 Comment
  CHSC45350  Navarretia capillaris Vernon Oswald; Lowell Ahart 1987-7-1 3049 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  UC1562317  Navarretia capillaris Vernon Oswald and Lowell Ahart 1990-6-27 4331 Butte 0.3 mi wnw Buckeye (site) (Oro-Quincy Hwy at the s edge of Walker Plains); s edge Walker Plains, nw of Buckeye (site) 1536 Comment
  UC600661  Navarretia capillaris E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek (Jonesville); , btw Jones Creek and Willow Creek 1700 Comment
  CHSC29377  Navarretia divaricata R. A. Schlising; S. Azevedo 1980-6-13 3699 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  JEPS108740  Navarretia divaricata subsp. divaricata Lowell Ahart 2006-7-16 13002 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
  CHSC38603  Navarretia divaricata subsp. vividior Vernon Oswald 1983-5-30 578 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon ca. 1.8 mi e of the power lines. 390 Comment
  CHSC91458  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CAS-BOT-BC230299  Navarretia heterandra Peter H. Raven 1953-5-9 5423 Butte 7 miles SE of Chico on Oroville Road Comment
  CHSC44336  Navarretia heterandra Lowell Ahart 1988-5-12 5997 Butte In a pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC91108  Navarretia heterandra Lowell Ahart 2005-5-28 11824 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
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  JEPS110190  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 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
  UC879888  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC67262  Navarretia nigelliformis subsp. nigelliformis James D. Jokerst; Barbara Castro 1992-5-19 3352 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  RSA717293  Navarretia pubescens L. Ahart 2005-5-28 11822 Butte on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CHSC36717  Navarretia tagetina D. H. Ikeda 1980-5-8 345 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC37826  Navarretia tagetina D. H. Ikeda 1980-5-10 351 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  CHSC10639  Nemophila heterophylla Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC32657  Nemophila heterophylla M. S. Taylor; L. Hanson 1981-3-16 3411 Butte Shaded embankment, e side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  RSA3796  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Along Chico Creek about six miles east of Chico. Comment
  UC1562353  Nemophila parviflora Vernon Oswald 1990-7-3 4345 Butte ca 0.75 mi s Humbug Summit (ca 4.75 mi e of Jonesville, headwaters of the East Branch Willow Creek); e branch Willow Creek, s of Humbug Summit, e of Jonesville 1950 Comment
  JEPS107913  Nemophila pedunculata Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11554 Butte Butte Creek Ecological Reserve. About 50 yards east of Chico Canyon Road, about 1/2 mile west of Highway 32, about 8 miles northeast of Chico 242 Comment
  JEPS87441  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  UCD137750  Nymphaea odorata G. Douglas Barbe 1975-6-4 2031 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  CHSC38882  Odontostomum hartwegii Vernon Oswald 1983-4-25 392 Butte Upper Bidwell Park, Chico, on the north slope of Horseshoe Lake. 109 Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  UC143374  Odontostomum hartwegii Mrs. R. M. Austin May 1896 837 Butte Chico Comment
  UC725394  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte slope near Chico airport (in elevated region above alluvial valley proper) Comment
  SEINET12265275  Odontostomum hartwegii A. A. Heller 1926-1 13933 Butte 4 mi N of Chico, on Richardson Springs road 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
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  JEPS114177  Orobanche fasciculata L. P. Janeway 2006-5-31 8650 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Rim road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Comment
  JEPS119679  Orobanche uniflora Lowell Ahart 2012-5-4 17987 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10549648  Orthocarpus attenuatus Mary Susan Taylor 1975-4-11 Taylor 455 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  SEINET12270186  Orthocarpus attenuatus C. C. Bruce 1897-1 2087 Butte Iron Canon Comment
  CHSC40214  Osmorhiza chilensis Lowell Ahart 1985-7-9 5119 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  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
  SEINET3840915  Ottelia alismoides G. Douglas Barbe, Thomas C. Fuller 1977-9-20 2334 Butte West of Biggs Rice Experiment Station, Submersed aquatic in drainage canal, east of Cherokee Canal, approximately 0.5 kilometers south of Highway 162 Comment
  UCD138168  Ottelia alismoides Donald E. Seaman 1977-9-10 s.n. Butte on Lattimore portion of Biggs Rice Station. Comment
  CHSC113970  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 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
  CHSC46495  Oxalis corniculata Lowell Ahart 1975-5-12 762 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC21143  Oxypolis occidentalis M. S. Taylor 1975-8-31 893 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UCD150723  Packera eurycephala Collector Unknown 1977-5-21 s.n. Butte California, Butte County. Near Pulga Canyon. Slopes of the Feather River. Elevation estimated by label-maker. 457 Comment
  CAS-BOT-BC316898  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 Butte Along Pulga Road, about 0.25 miles west of Bardees Bar along the North Fork of the Feather River, about 2.5 miles 365 Comment
  CHSC26787  Packera eurycephala var. lewisrosei M. S. Taylor 1978-5-6 1582 Butte Magalia. 609 Comment
  HSC6152  Packera eurycephala var. lewisrosei L. S. Rose 1967-6-11 67103 Butte 3 mi. S of Pulga, Feather River Canyon Comment
  UC831739  Packera eurycephala var. lewisrosei A. A. Heller 1938-5-28 15115 Butte 23 mi from Oroville (on the Feather River Highway); Feather River Highway Comment
  UC492749  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC600480  Paeonia brownii H. F. Copeland 1920-5-22 205 Butte Jonesville Comment
  CHSC110344  Panicum dichotomiflorum B. Castro 2006-8-25 1606 Butte Sacramento Valley. CA 1.9 mi W of Hwy 99 and 1 mi E of Richvale, immediately N of Richvale Hwy in Cherokee Canal. On E side of canal about 120 ft in from toe of E levee. 32 Comment
  UCD89718  Panicum dichotomiflorum E. Wilson 1934-10-1 s.n. Butte Near Biggs. Comment
  JEPS110514  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-10-13 13505 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
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CHSC108989  Parentucellia viscosa Lowell Ahart 2012-4-30 19942 Butte Depression along the side of the Guardian Trail, about 1/4 mile west of Highway 32, about 8-1/4 miles northeast of Chico, south part of Upper Bidwell Park. 382 Comment
  CHSC109159  Parentucellia viscosa Lowell Ahart 2012-5-12 18043 Butte Depression along the side of Guardian Trail, about 1/4 mile west of Highway 32, about 8-1/4 miles northeast of Chico, south part of Upper Bidwell Park. 382 Comment
  CHSC50116  Parentucellia viscosa Vernon Oswald 1990-4-24 4167 Butte Messila Valley Rd, 0.6 mi west of Pentz-Magalia Hwy, ca. 6 mi south-southeast of Paradise. 164 Comment
  CHSC95059  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern High Sierra Nevada Foothills. Abundant on the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC38839  Paspalum dilatatum Vernon Oswald 1983-6-3 630 Butte Upper Bidwell Park, Chico, on the side of the access road on the w bank of the diversion channel near Lindo Channel. 83 Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  UCD80146  Pectocarya pusilla CNPS SN Foothill Team 2005-3-22 SNFN 0063 a Butte CDPR Oroville State Recreation Area, just south of a state park utility road out to water tanks. This road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  POM15713  Pedicularis aurantiaca Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC84417  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 mile (air) southwest of the Sly Creek Reservoir Dam. 996 Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC40285  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte Lumpdin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  CHSC31463  Pellaea mucronata M. S. Taylor 1981-1-5 3369 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  JEPS87422  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 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
  CHSC31448  Penstemon laetus var. leptosepalus L. Ahart 1980-9-10 2641 Butte Along the edge of the rd, ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC26836  Penstemon newberryi M. S. Taylor 1978-6-24 1650 Butte Humboldt Summit, on Butte Co and Tehama Co line. 2133 Comment
  CHSC44700  Penstemon newberryi R. Banchero 1980-7-2 278 Butte Upper Butte Creek, Ca 2.5 mi directly W of Inskip. 896 Comment
  CHSC43130  Penstemon personatus R. Banchero; R. Schlising 1981-7-19 609 Butte 1 mi e of Bald Mt lookout tower on Bald Mt. 1780 Comment
  JEPS83778  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  RSA79777  Penstemon rydbergii var. oreocharis F. W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road. Comment
  RSA0059021  Pentagramma pallida C. C. Bruce 1897-06 1870 Butte From Canon. Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  CHSC86066  Pentagramma triangularis subsp. triangularis R. D. Fischer 2004-1-3 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). In ravine just east of Chico Canyon Road, as it parallels Chico Creek, about half a mile north of BCCER's southern boundary. 259 Comment
  SEINET10454544  Perideridia bacigalupii Lowell Ahart 1985-8-15 Ahart 5163 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC40228  Perideridia kelloggii Vernon Oswald 1985-6-22 1859 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft w of the turn-around at the end of Upper Park Rd. 207 Comment
  CHSC74059  Perideridia parishii subsp. latifolia B. Castro 1998-7-28 815 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CAS-BOT-BC419317  Persicaria punctata Lowell Ahart 1987-10-22 5924 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  SJSU5411  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Honeyrun Rd between Chico & Paradise 487 Comment
  CHSC110127  Phacelia cicutaria var. cicutaria L. P. Janeway 2012-3-21 10797 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  CHSC3837  Phacelia egena L. E. Dunkel 1965-6-4 18 Butte Scattered along banks of East Br. Mud Creek, ca 600 yards e of entrance gate to Richardson Springs Resort from Cohasset Road. 33 Comment
  CHSC40595  Phacelia egena Ahart; Jokerst 1985-3-24 4857 Butte Serpentine Point, west of Yankee Hill, around large rock outcroppings. 550 Comment
  CHSC69213  Phacelia egena J. D. Jokerst 1984-5-19 2022 Butte Along edge of road cut for Pulga Road within 100 feet of its junction with Highway 70 in the canyon of the North Fork of the Feather River. Comment
  UC1228349  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte about 6 mi s Stirling City (along road to Magalia) 792 Comment
  JEPS87202  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake, near cliffs) 1798 Comment
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CAS-BOT-BC265845  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CHSC32604  Phalaris brachystachys J. D. Jokerst 1979-11-11 636 A Butte Goodspeed-Watt Road 0.1 mi N of its jct with Nelson Rd. Area adj to canal. Comment
  CHSC20453  Phalaris caroliniana Dave Isle 1969-4-18 372 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500+ yards W. of road on Table Mtn.). 289 Comment
  CAS-BOT-BC259047  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  CDA34212  Phalaris paradoxa L. Ahart 2010-6-12 16808 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  CHSC91099  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte 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. 70 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  RSA0057776  Philadelphus lewisii Edward Palmer 1892-6-7 s.n. Butte Near Chico. Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  JEPS114181  Phlox speciosa subsp. occidentalis L. P. Janeway 2007-5-6 8969 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CAS-BOT-BC141120  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1977-3-19 s.n. Butte Peter Along North Honcut Creek, about 3 miles NE of Honcut 60 Comment
  CHSC101261  Phoradendron villosum Lowell Ahart 2009-4-17 15559 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
  JEPS104307  Phoradendron villosum Lowell Ahart 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, ca 200 yd e of Parking Area O, Upper Bidwell Park, ca 4 1/2 mi e of Manzanita Avenue, Chico. 182 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  HSC97374  Phyllostachys bambusoides var. aurea J. P. Smith, J. O. Sawyer 2007-9-2 12421 Butte Ord Ferry Rd., SW of Dayton 42 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  CHSC66362  Physalis lancifolia Vernon H. Oswald 1996-6-20 7822 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 hiking trail near the east observation platform (S end of Tract 2, Sanctuary II). 33 Comment
  RSA726339  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte North strand of a reservoir, about 2.25 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA325148  Physocarpus capitatus M. S. Taylor, L. Hanson 1981-5-17 3805 Butte Along creek, Phillips property, 685 Wagstaff, Paradise. 579 Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  SEINET10537235  Phytolacca americana Mary Susan Taylor 1975-6-22 Taylor 786 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC76943  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29996  Pilularia americana L. Ahart 1980-4-19 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42140  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Along the sides of Kunkle Creek, about 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 548 Comment
  SEINET10530358  Pilularia americana Mary Susan Taylor 1979-5-6 Taylor 2002 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  SEINET10866941  Pinus jeffreyi Mary Susan Taylor 1978-7-18 Taylor 1706 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  UC600637  Piperia colemanii H. F. Copeland 1932-7-23 Butte above Jonesville hotel; Jonesville 1600 Comment
  CHSC65869  Piperia transversa L. P. Janeway 1995-7-16 4862 Butte Along Jordan Hill Road 0.3 mi south of the turn to Sawmill Peak Lookout; about 2 mi east of Magalia. 929 Comment
  CHSC3336  Pistacia mexicana Robert L. Smith 1966-3-1 20 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 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
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10932925  Pityrogramma triangularis Mary Susan Taylor 1981-4-8 Taylor 3507 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  JEPS119688  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte About 200 yards southwest of the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC13487  Plagiobothrys canescens S. Poe 1974-4-22 15 Butte Adjacent to Fern Bank area, upper Bidwell Park. Comment
  UC79243  Plagiobothrys canescens Mrs. R. M. Austin May 1883 Butte Comment
  CHSC43392  Plagiobothrys glyptocarpus Lowell Ahart 1979-5-7 1856 Butte Near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 472 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
  UCD18741  Plagiobothrys glyptocarpus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 34 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SBBG119952  Plagiobothrys greenei L. Ahart 2004-4-4 10713 Butte ca. 250 yards E of Wilber Rd, NE of the high hill crossed by Wilber Rd, ca. 3 air mi W of Thermalito 48 Comment
  UCD120878  Plagiobothrys greenei W. R. Powell 1968-4-23 1467 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC31256  Plagiobothrys hispidulus R. A. Schlising; R. Banchero 1980-7-14 3892 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows); in meadow/pasture. 1511 Comment
  CHSC42514  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC35057  Plagiobothrys scriptus Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County. Off Cana-Pine Creek Road. 57 Comment
  CHSC31552  Plagiobothrys shastensis L. Ahart 1977-4-15 1294 Butte Peter Ahart Ranch, Honcut. In pasture fields. 50 Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC112903  Plagiobothrys stipitatus var. micranthus B. Castro; Robin Carter 2011-4-29 1879 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC31579  Plagiobothrys stipitatus var. micranthus L. Ahart 1974-4-14 405 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46346  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1989-5-28 6290 Butte Near the edge of a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point. 335 Comment
  CHSC52004  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-9 3357 Butte E of Chico, at roadside of dirt road formerly named Bruce Road, just north of Skyway. 76 Comment
  CHSC99476  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte Depression in a small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  SEINET10497616  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 A Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  UCD73012  Plagiobothrys stipitatus var. stipitatus Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  CHSC33702  Plantago bigelovii L. Ahart 1981-4-6 2745 Butte A little SE of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi swof Gridley. 35 Comment
  CHSC110440  Plantago elongata B. Castro 2007-3-29 1618 Butte Sacramento Valley. Ca 0.9 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. Around edges of distinct but shallow, flat-bottomed vernal pool, ca 80 ft E of Cohasset Rd and 50 ft N of Levell Along Sycamore Creek. 57 Comment
  CHSC24937  Plantago elongata Brad R. Parker 1976-4-23 Butte Ca. 13 mi nw of Chico and 25 yds s off Hwy 99, Broyles Rd intersection. 62 Comment
  CHSC47458  Plantago elongata Lowell Ahart 1974-3-24 337 Butte Growing on the bottom of vernal pools and wet swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CDA12067  Plantago erecta G. F. Hrusa, J. Hart 1989-4-15 5916 Butte Table Mountain; Summit of North Table Mountain. Comment
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  CHSC47466  Plantago erecta Lowell Ahart 1978-5-1 1696 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC39524  Plantago lanceolata Lowell Ahart 1983-6-21 4064 Butte Fround growing along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, northeast of Oroville. Section 5. 400 Comment
  CHSC76003  Plantago major Lowell Ahart; Vernon H. Oswald 1999-8-13 8173 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
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  CHSC51947  Platanthera sparsiflora L. P. Janeway 1987-7-5 2448 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC77489  Platanus X acerifolia Anna Pinsky 1997-4-30 34 Butte Upper Bidwell Park, between Bear and Salmon Hole, adjacent to Big Chico Creek, next to large rocks. Comment
  CAS-BOT-BC91594  Platystemon californicus Ira L. Wiggins 1925-3-22 1492 Butte At roadside about one mile below Five Mile Dam on Chico Creek. Three miles above Chico. Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  JEPS119844  Plectritis ciliosa Lowell Ahart 2012-3-23 17791 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC458152  Pleuricospora fimbriolata C. C., Mrs. Bruce 1898-1-1 1217 Butte Colby place Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
Read comments
Mar 7 2011
  CAS-BOT-BC244401  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 0.5 mile SW of Forbestown Res., along the road, about 4 miles NE of Forbestown 450 Comment
  CHSC100964  Poa annua Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10593438  Poa annua Oswald 1993-4-3 OSWALD 5248 Butte T22N, R1E, (sections not surveyed), 1007 Lori Drive, in northwest Chico. Suburban area. 53 Comment
  SEINET10822489  Poa annua Mary Susan Taylor 1975-4-6 Taylor 431 Butte Chico. NE corner of Arcadian and West 4th Avenue. 52 Comment
  UC600760  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville 1524 Comment
  SEINET10508290  Poa bolanderi Lowell Ahart 1985-7-16 Ahart 5147 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1829 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CHSC102820  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC42451  Poa pratensis Lowell Ahart 1987-5-6 5560 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  JEPS117717  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  CHSC96855  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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. 685 Comment
  CHSC772  Pogogyne douglasii D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  CHSC52057  Pogogyne zizyphoroides R. A. Emmrich 1975-5-6 55 Butte Roadside w of Chico-Oroville Hwy, 1/4 mi n of intersection with Hwy 99. 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
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  CDA40270  Polemonium occidentale T. C. Fuller 1962-7-12 9205 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC32101  Polygala cornuta L. Ahart 1974-8-3 583 Butte At Merry Mountain Village. 914 Comment
  CHSC96818  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  RSA76964  Polygala cornuta var. cornuta F. W. Peirson 1926-6-21 6764 Butte About 10 miles east of Chico on Humboldt Road. Comment
  SEINET10479328  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4373 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC103695  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom 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
  CHSC38614  Polygonum bidwelliae Vernon Oswald 1983-5-7 444 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 304 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  JEPS117281  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 120 Comment
  SEINET10479619  Polygonum bistortoides Mary Susan Taylor 1977-7-15 Taylor 1404 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CAS-BOT-BC109152  Polygonum bolanderi Lowell Ahart 1983-8-16 4280 Butte A little north of Humboldt Road, about 3 miles southwest of Butte Meadows. 1450 Comment
  JEPS98376  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte 13 air miles NE of Oroville (N side of Bean Creek Rd, 1/4 mi SE of Little Bald Rock, 1 1/4 air miles NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  CAS-BOT-BC414367  Polygonum californicum Lowell Ahart 1974-10-18 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CHSC61003  Polygonum douglasii subsp. douglasii Lowell Ahart 1993-6-20 6984 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile northwest of the Lost Creek Reservoir Dam. 1158 Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 Butte About 70 yards east of the poor dirt road, about 80 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
  SEINET10479647  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6716 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  CAS-BOT-BC419896  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of Philbrook Creek s of the road. 1828 Comment
  RSA0035341  Polygonum punctatum Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  SEINET10970715  Polygonum punctatum Lowell Ahart 1991-9-14 Ahart 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC71862  Polypodium californicum Rod O'Sullivan 1977-2-12 4 Butte Little Chico Creek Canyon, 9.2 mi NE of Chico on Hwy 99 and 1 mi E of Tenmile House, Paradise Quadrangle, 15' 268 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC42503  Polypodium calirhiza Lowell Ahart 1987-5-9 5598 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  JEPS107676  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam 304 Comment
  JEPS120176  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 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
  JEPS124334  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC47635  Polypogon monspeliensis Lowell Ahart 1966-5-7 14 Butte In swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS93847  Polypogon monspeliensis Lowell Ahart 1998-6-9 7991 Butte about 7 air mi n of Oroville (about 200 yards sw of the Ione oak tree, w of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  SEINET10530118  Polystichum imbricans Mary Susan Taylor 1980-5-27 Taylor 2668 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10530120  Polystichum imbricans Mary Susan Taylor 1979-10-5 Taylor 2232 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  CAS-BOT-BC102493  Populus fremontii A. A. Heller 1913-4-4 10693 Butte Levee at Oroville Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 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
  RSA320498  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Wildlife Refuge, at end of West Liberty Road, ca. 12 miles southwest of Gridley. 19 Comment
  JEPS102326  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  CHSC43803  Potamogeton natans Vernon Oswald 1987-7-29 3168 Butte Southwestern most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC49687  Potamogeton natans Vernon Oswald 1987-4-30 2359 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In several ponds. 80 Comment
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  CAS-BOT-BC454087  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  SEINET10483112  Potentilla glandulosa subsp. glandulosa Mary Susan Taylor 1982-5-2 Taylor 4393 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CAS-BOT-BC539448  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC101760  Poterium sanguisorba Lowell Ahart 2009-5-23 15732 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
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  SFV16940  Prunella vulgaris var. lanceolata J. N. Hogue 1980-9-6 83 .5 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC109092  Prunus Lowell Ahart 2012-4-20 17901 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, south part of Upper Bidwell Park. 361 Comment
  CHSC37707  Prunus avium M. S. Taylor 1981-5-29 3813 Butte At old cabin site (persisting) on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chico Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC96429  Prunus caroliniana L. P. Janeway 2007-3-30 8965 Butte Sacramento Valley. Rancho Arroyo Chico. On campus of California State University Chico; 35 m north of Big Chico Creek, 10 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camelia Garden. 60 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  CHSC27223  Prunus laurocerasus P. Moyer 1972-3-18 140 Butte CSUC Campus. Lawn of Bidwell Mansion. 60 Comment
  JEPS118066  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC113158  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC90923  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC357001  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  CAS-BOT-BC357235  Pseudognaphalium microcephalum Lowell Ahart 1988-9-4 6176 Butte A little north of a branch of Last Chance Creek, about 1 mile west and a little north of Bald Mountain 1005 Comment
  CAS-BOT-BC357588  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CAS-BOT-BC357591  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC100525  Pseudognaphalium thermale Lowell Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC82429  Psilocarphus tenellus var. globiferus Lowell Ahart 2002-5-7 9612 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10452195  Psoralea macrostachya Lowell Ahart 1985-6-30 Ahart 5080 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  UC726637  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte near Forest Ranch Forest Ranch; Sierra foothills Comment
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  SEINET10959744  Puccinellia simplex Lowell Ahart 1982-4-29 Ahart 3396 Butte Normal size. On white alkali bare soil near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common only in the bare alkali areas; uncommon in this area. 35 Comment
  JEPS98312  Pyrola aphylla Lowell Ahart 2000-7-11 8573 Butte On the north side 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, about 4 miles (air) northeast of Feather Falls 1219 Comment
  CAS-BOT-BC460581  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along dirt road on Fields Ridge, 4 miles SE of Feather Falls 792 Comment
  CAS-BOT-BC462606  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1700 Comment
  SBBG28968  Pyrola picta E. B. Copeland 1930-7-29 Butte Jonesville 1600 Comment
  UC177572  Pyrola picta H. M. Hall 1914-7-23 9779 Butte near Jonesville 1584 Comment
  UC600606  Pyrola picta E. B. Copeland 1929-7-1 Butte Jonesville Comment
  SEINET10449204  Pyrola picta f. aphylla Mary Susan Taylor 1977-6-25 Taylor 1387 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  HSC104019  Quercus X morehus L. Ahart 2012-3-23 17799 Butte About 5 air mi. NE of Chico, ~ 50 yds. W of Hwy. 32; on the south side of the Old Humboldt Road cut, north end of the Disc Golf Area 395 Comment
  UC1135497  Quercus berberidifolia C. G. Albertus 1933-6-28 36 Butte 1.25 mi e Keefer's Old Mill; Chico Quad. 213 Comment
  UC1135528  Quercus berberidifolia C. G. Albertus 1933-6-6 16 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  CHSC23663  Quercus douglasii M. S. Taylor 1976-4-26 1079 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. Comment
  CHSC46734  Quercus durata var. durata Lowell Ahart 1979-6-9 1926 Butte Along a dirt road about 1/2 mile north-east of Magalia. 640 Comment
  CHSC20501  Quercus kelloggii M. S. Taylor 1975-6-30 826 Butte Abundant along Cohasset Hwy, ca. 1 mi s of Cohasset, ca. 17 mi ne of Chico. 853 Comment
  SFV887  Quercus kelloggii F. C. Raney 1964-10-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC6047  Quercus lobata M. MacArthur 1968-6-19 228 Butte SW side of Big Chico Creek ca. 30 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  JEPS57370  Quercus lobata L. R. Heckard 1968-5-31 1932 Butte Bidwell Park Chico Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  CAS-BOT-BC186694  Ranunculus John Thomas Howell 1976-4-2 51549 Butte About 2 miles southeast of Chico 60 Comment
  UC398911  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville; in cold streams 1500 Comment
  JEPS103494  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SEINET12089319  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft. e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run 146 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
  CHSC46845  Ranunculus hebecarpus Kirsten Tarp 1982-4-3 100 Butte Near Chico in Upper Bidwell Park. 152 Comment
  CHSC53703  Ranunculus hebecarpus Kirsten Tarp 1983-4-9 266 Butte N of Butte College. 91 Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  RSA718079  Ranunculus occidentalis var. ultramontanus L. Ahart 2006-7-16 12997 Butte NW edge of Willow Creek, 3/4 airmile NW of Jonesville, 5 airmiles NE of Butte Meadows. 1516 Comment
  JEPS95737  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  CHSC20002  Rhamnus tomentella subsp. tomentella M. S. Taylor 1975-1-16 373 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  CHSC51844  Rhus aromatica Steven Triano 1987-4-7 37 Butte Ca 20 ft S of Honey Run Rd ca 2.7 mi E of The Skyway, out of SE Chico. 91 Comment
  SEINET10906821  Rhus trilobata var. malacophylla Mary Susan Taylor 1979-3-20 Taylor 1952 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
  SEINET7589325 Image available Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Pulga 7.5' quad, Northern High Sierra Nevada. Northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC11906  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  JEPS94297  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte about 8 air mi ne of Stirling City (on the w side of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1432 Comment
  CAS-BOT-BC198966  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC87547  Robinia pseudoacacia R. D. Fischer 2004-3-5 70 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found next to parking area at 10 Mile House Road leading into the park. 502 Comment
  UC397035  Rorippa curvisiliqua Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CHSC113193  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC98978  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2008-5-8 14714 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
  CHSC112717  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. 1681 Comment
  CHSC35750  Rorippa nasturtium-aquaticum R. E. Preston 1982-5-19 288 Butte In stream at edge of meadow; ca. 1/4 mi n of Fall River Campground. 1028 Comment
  CHSC46483  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-31 6332 Butte On the bottom of a stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  UC2026882  Rosa banksiae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  SEINET10937258  Rosa californica Mary Susan Taylor 1977-11-12 Taylor 1533 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CAS-BOT-BC148125  Rosa gymnocarpa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  SEINET10483515  Rosa gymnocarpa Mary Susan Taylor 1979-10-5 Taylor 2225 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC43946  Rosa multiflora Vernon Oswald 1988-4-26 3283 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. On the ege of a ditch. 21 Comment
  CHSC65464  Rosa pisocarpa subsp. pisocarpa Vernon Oswald 1983-7-6 822 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Near the edge of a meadow. 1325 Comment
  CHSC31887  Rotala ramosior L. Ahart 1975-7-5 850 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek on mud. 45 Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CAS-BOT-BC158769  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC42425  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  UCD101368  Rumex obtusifolius L. Ahart 1982-9-13 3807 Butte Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC26723  Sagina apetala M. S. Taylor; M. Hayes 1978-4-14 1563 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  POM101502  Sagina apetala C. C. Bruce 1897-06 1888 Butte Little Chico. Comment
  CHSC113510  Sagina saginoides Lowell Ahart 2014-7-16 19680 Butte Northeast area of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  UC446426  Salix boothii E. B. Copeland 1931-6-11 Butte Kirby Meadow at outlet Jonesville 1800 Comment
  LA208686  Salix exigua var. hindsiana A. A. Heller; 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson Comment
  CHSC108871  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southwest of the intersection of south rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  CAS-BOT-BC106936  Salix laevigata Lowell Ahart 1987-5-22 5684 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
  CHSC32613  Salix laevigata J. D. Jokerst 1979-3-20 1232 Butte Top of North Table Mt., the second drainage N of Cherokee Rd., at the E edge of the mountain center. 396 Comment
  CHSC108810  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC108840  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte Wet are in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  JEPS119583  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS119584  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS119610  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  SEINET177031  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. 1700 Comment
  UC478539  Salix lemmonii E. B. Copeland 1931-8-1 401 Butte about the Lily Pond Jonesville 1700 Comment
  CHSC34210  Salix melanopsis J. D. Jokerst; L. Ahart 1981-9-26 1480 Butte 5 mi W of Chico at Bidwell River State Park (Chico Landing). Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  RSA4458  Sambucus caerulea E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  CHSC66435  Sambucus mexicana Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  SD4966  Sambucus racemosa E. B. Copeland 1930-7-12 Butte Above Jonesville 2100 Comment
  RSA754445  Sanicula bipinnata L. Ahart 2009-4-17 15558 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CAS-BOT-BC223243  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Near Paradise Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 Comment
  JEPS108822  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC1983  Sanicula crassicaulis A. Goekler 1930-4-13 Butte Chico. Comment
  CHSC58874  Sanicula graveolens Lowell Ahart 1992-7-29 6886 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC1562471  Sanicula graveolens Vernon Oswald and Lowell Ahart 1990-5-29 4260 Butte 1.8 mi E of Lomo (NW side of Humboldt Rd (to Butte Meadows)) 1380 Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CHSC5985  Sarcococca ruscifolia M. MacArthur 1968-6-12 148 Butte NW side of Ls Bld. near the SW end, Chico State College campus. 60 Comment
  SEINET12216574  Saxifraga californica G. H. Snodgrass 1981-1 PT- 16 Butte ca 8 mi E of Chico, S side of Butte Creek Canyon above Covered Bridge on Humbug Rd 244 Comment
  CHSC51841  Sceptridium multifidum L. P. Janeway 1986-9-1 1830 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC68457  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-10 2485 Butte West side of Hwy 99 about 1/2 mi north of Cottonwood Road. 41 Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 Comment
  CAS-BOT-BC22405  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  JEPS110301  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 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
  SEINET11268263  Scirpus setaceus Lowell Ahart 2000-7-11 8563 Butte About 200 yards southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 6 1/2 miles (air) northeast of Feather Falls.; 0 1280 Comment
  SD116544  Scirpus tuberosus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Groville and Marysville, stream through Valley Grassland and grainfield. On moist clay. Dry rocky stream bed. 29 Comment
  CHSC71173  Scleranthus annuus subsp. annuus Lowell Ahart 1998-6-9 7981 Butte On the west side of Cherokee Road, about 50 feet south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC74681  Scutellaria siphocampyloides Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  CHSC3952  Sedella pumila E. P. Parreno 1967-4-3 Butte Tabletop Mt. Comment
  CHSC84128  Sedella pumila Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  SEINET8249655  Sedella pumila A. Heller 1926-4-19 13923 Butte Along Chico-Oroville road, about 7 miles from Chico. Comment
  CHSC24643  Sedum spathulifolium S. Deaton 1976-4-23 37 Butte Ca. 1 3/4 mi n of Feather Falls trail parking lot, n side of trail. 853 Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC100795  Selaginella hansenii Lowell Ahart; John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 335 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  SEINET10530437  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2330 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC28666  Selaginella wallacei J. D. Jokerst 1979-7-1 402 Butte Upper most rim rock S.E. of Big Chico Cr. 365 Comment
  CAS-BOT-BC363240  Senecio M. S. Taylor 1976-5-3 1100 Butte Ca. 2 ft e of Bald Rock Rd, ca. 50 ft n of jct of Oroville-Quincy Hwy & Bald Rock Rd, ca. 13 mi ne of Oroville 914 Comment
  CHSC26844  Senecio aronicoides M. S. Taylor 1978-6-24 1636 Butte On n side of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1371 Comment
  CHSC86441  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 93 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 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
  CAS-BOT-BC364271  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC105813  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, 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
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS116118  Senecio vulgaris Lowell Ahart, John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  CAS-BOT-BC364728  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 883 Comment
  CAS-BOT-BC364730  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CDA32075  Sesbania punicea C. Owens 2010-9-23 s.n. Butte Chico; 10 meters downstream of River Road in Shady Oak Slough (which connects to Little Chico Creek). 0 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 Comment
  RSA724863  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC42922  Setaria pumila Lowell Ahart 1987-7-3 5768 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10507623  Setaria viridis Mary Susan Taylor 1982-8-16 Taylor 4989 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  JEPS113141  Sibara virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville 31 Comment
  SEINET10904427  Sidalcea calycosa Mary Susan Taylor 1980-3-28 Taylor 2408 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  RSA325176  Sidalcea calycosa subsp. calycosa M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC101329  Sidalcea hartwegii Lowell Ahart 2009-4-22 15583 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  SFV2295  Sidalcea hartwegii B. Fuller 1962-5-8 s. n. Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  HSC85995  Sidalcea hartwegii J. Hunter 1986-4-21 53 Butte N side of Chico Cr., 5 mi. E of Chico Golf Course, near parking lot N in Bidwell Park Comment
  POM253295  Sidalcea hartwegii A. A. Heller 1938-4-17 15040 Butte Stony slope back of the Salmon Hole Chico creek east of Chico Comment
  RSA21305  Sidalcea hartwegii Carl B. Wolf 1937-5-13 8650 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SBBG17390  Sidalcea hartwegii M. Vincent 1962-4-17 199 -A Butte 4 mi S of Paradise at Kunkel reservoir Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  UC204466  Sidalcea oregana subsp. spicata A. A. Heller 1914-8-6 11645 Butte Chico Meadows Sierra Nevada at Chico Meadows (Sierra Nevada) 1219 Comment
  CAS-BOT-BC384465  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 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
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  CHSC52013  Silene lemmonii L. P. Janeway 1988-6-25 2880 Butte Logged slopes above the creek along Bull Hill Rd 2.2 mi from the Skyway. 1508 Comment
  RSA715709  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  CHSC33182  Sinapis arvensis R. E. Preston 1981-1-20 32 Butte Along irrigation ditch on w side of Chico-Butte City Hwy, ca. 2.3 km s of Ord Ferry Rd., ca. 14 km ssw of Chico. Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  CHSC41256  Sisyrinchium idahoense S. C. Morey 1983-7-21 475 Butte Cherry Hill Meadow. On n side of humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET10472590  Smilacina stellata Mary Susan Taylor 1981-5-13 Taylor 3705 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  JEPS95793  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET13709621  Solanum americanum Lowell William Ahart, Lowell William Ahart 1999-1 8261 Butte 12 Mi. S of Oroville (T17N, R4E, sec 4, NW 1/4) 30 Comment
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 Comment
  HSC97107  Solanum parishii L. Ahart 2006-5-19 12633 Butte W side of Bardees Bar Rd., S of small stream, .25 mi. SW of the bridge across the N Fork of the Feather River, 2.75 mi. SW of Pulga 406 Comment
  HSC23325  Solanum parishii Carolyn Fante 1971-10-19 23 Butte E side Humbug Rd. 146 Comment
  SEINET10546684  Solanum parishii Mary Susan Taylor 1975-4-26 Taylor 507 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC107245  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CAS-BOT-BC157206  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte West of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  CHSC37123  Sorbus scopulina L. Ahart 1982-9-13 3824 Butte Along a stream, near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC2191  Sorghum halepense P. Mason 1937-5-20 Butte Near 5-mile Dam. 76 Comment
  UCR219103  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15601 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  RSA755768  Spartium junceum L. Ahart 2009-5-23 15743 Butte East side of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC35004  Spergula arvensis subsp. arvensis R. A. Schlising; R. Banchero 1981-4-17 4039 Butte S part of county, NE of Honcut and SW of Bangor; 2.5 miles N of La Porte road along Dunstone Road. At roadside. Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC46353  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  SEINET10454595  Sphenosciadium capitellatum Mary Susan Taylor 1978-7-18 Taylor 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC33639  Spiraea douglasii M. Merryman; R. Banchero 1979-9-2 31 Butte Humboldt Rd at Butte Creek, 5.3 mi ne of jct Hwy 32 and Humboldt Rd. At streamside. 1341 Comment
  CHSC41887  Spiraea douglasii Lowell Ahart 1986-8-15 5383 Butte Near the edge of a meadow, 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
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 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
  LA208284  Spiraea splendens E. B. Copeland; 1931-6-19 649 Butte Jonesville, at the Summit 640 Comment
  UC176382  Spiranthes porrifolia A. A. Heller 1913-6-4 10776 Butte n Oroville; Table Mountain Olive Ranch Comment
  CAS-BOT-BC236692  Sporobolus cryptandrus Vernon Oswald 1989-6-8 3802 Butte Hwy 70, ca. 0.5 mi n of Truex Road, n of the Hwy 70 bridge over the North Fork of teh Feather River 408 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC102960  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC39397  Stachys pycnantha L. Ahart 1983-9-17 4428 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  JEPS114699  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte on the N side of the South Fork of the Feather River, about 10 yds E of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosaedge 258 Comment
  JEPS114740  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  UC128776  Stachys pycnantha Miss Kate Conger 1907-1 Butte Brush Creek. Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC175313  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  CHSC48273  Stellaria calycantha Vernon Oswald 1987-7-29 3166 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the SE1/4 of S6. Along a streamlet. 1752 Comment
  CDA42900  Stellaria media L. Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  JEPS87499  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  SEINET10833473  Stellaria nitens Lowell Ahart 1983-3-28 Ahart 3907 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CAS-BOT-BC181448  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  CHSC39044  Stellaria obtusa R. A. Schlising 1983-8-27 4452 Butte N part of county in Coon Hollow, N of Philbrook Reservoir. In streambed. Comment
  CHSC48281  Stellaria obtusa Vernon Oswald 1987-7-29 3160 Butte Near Coon Hollow Rd. at the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. On the edge of a small backwater of the river. 1621 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  SEINET10474965  Stephanomeria paniculata Lowell Ahart 1991-8-25 Ahart 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/S24. 1097 Comment
  CAS-BOT-BC375765  Stephanomeria virgata John Thomas Howell 1961-9-22 36741 Butte Bottom of Feather River, Oroville 53 Comment
  CHSC112780  Stipa lemmonii var. lemmonii Lowell Ahart 2013-5-27 18714 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  SEINET8078260  Stipa lemmonii var. lemmonii R. McKee 1918-5-12 s.n. Butte Magalia. 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
  CAS-BOT-BC61284  Streptanthus cordatus var. cordatus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Mountains. 1463 Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  CAS-BOT-BC87030  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mile ESE of Kunkle Reservoir, on west Branch Feather River arm of Lake Oroville, ca. 4.5 mile SE of Paradise. 280 Comment