Search Results — 2000 specimen records retrieved (1626 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
  SEINET10530581  Abies magnifica Mary Susan Taylor 1977-8-17 Taylor 1487 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  CHSC20965  Acer macrophyllum M. S. Taylor 1975-9-19 915 Butte Ca. 50 ft e of the Skyway, ca. 1/2 mi n of Magalia. 609 Comment
  CHSC99657  Acer macrophyllum H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  SEINET10453999  Acer negundo subsp. californicum Mary Susan Taylor Taylor 441 Butte Campus of the California State University, Chico. 61 Comment
  CHSC109650  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  CHSC105812  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC248  Achillea millefolium R. M. Staley 1952-6-28 Butte W. Branch Feather River Comment
  CHSC38313  Achillea millefolium Vernon Oswald 1983-5-11 474 Butte Upper Bidwell Park, Chico, on the slope s of the Pistol Range on the s border of the Golf Course. 121 Comment
  SEINET10904839  Achillea millefolium var. lanulosa Lowell Ahart 1985-5-15 Ahart 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  CHSC93506  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 385 Comment
  JEPS108542  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir 856 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
  CAS-BOT-BC216461  Achnatherum occidentale subsp. californicum Javier Penalosa 1962-6-18 2467 Butte Near confluence of French and Peavine Creeks 640 Comment
  CAS-BOT-BC216376  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak 2151 Comment
  CHSC92276  Achnatherum stillmanii L. P. Janeway; B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly-facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC33349  Achyrachaena mollis R. M. Winchell 1980-4-23 2 Butte N of Chico, in annual grassland by vernal pool between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CAS-BOT-BC29948  Achyrachaena mollis Lowell Ahart 1970-5-12 1107 Butte Peter Ahart Ranch, near Honcut 45 Comment
  CHSC100477  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2008-11-14 15454 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UCD103796  Acmispon americanus var. americanus A. A. Heller 1914-7-24 11625 Butte Forest Ranch. 731 Comment
  CHSC39293  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte Along the edge of a dirt road, about 3 miles east of Milsap Bar, about 25 miles northeast of Oroville. 1100 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
  JEPS122002  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. Comment
  CHSC31394  Acmispon wrangelianus J. D. Jokerst 1979-4-13 1191 Butte Top of North Table Mt., N of Cherokee Rd ca. 150 met. 396 Comment
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CHSC33947  Aconogonon phytolaccifolium M. S. Taylor; L. Ahart 1981-8-16 4208 Butte N side of 25N04 near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Sitrling City. 1950 Comment
  CAS-BOT-BC29854  Adenocaulon bicolor H. F. Copeland 1928-8-18 399 Butte near Jonesville 1524 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
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CDA1641  Aegilops cylindrica D. Conway Jun 1991 Butte Butte College campus, 3536 Butte Campus Drive, 4 miles east of Durham on Durham-Penz Road 0 Comment
  CHSC110345  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 5.6 road km north of the bridge over Canyon Creek arm of Lake Oroville. 357 Comment
  JEPS110293  Aegilops triuncialis Lowell Ahart 2006-6-9 12640 Butte Along the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  CHSC101825  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC77486  Aesculus californica Anna Pinsky 1997-4-24 17 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek, on grassy hill between large rock outcrops. Comment
  CHSC90943  Agoseris heterophylla Lowell Ahart 2005-4-18 11730 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
  CDA14067  Agoseris retrorsa G. F. Hrusa, T. D. Wilfred 1997-5-1 13715 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC101838  Agoseris retrorsa Lowell Ahart 2009-5-23 15752 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  JEPS115588  Agoseris retrorsa Lowell Ahart 2009-5-23 15752 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  SEINET10839138  Agoseris retrorsa Mary Susan Taylor 1981-4-28 Taylor 3566 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  JEPS119956  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC127371  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 50 Comment
  CHSC84154  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  SEINET10968288  Agrostis exarata Mary Susan Taylor 1978-7-19 Taylor 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC103938  Agrostis microphylla Lowell Ahart 2010-5-16 16700 A Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC78354  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC104830  Aira caryophyllea Lowell Ahart 2010-6-1 16753 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC29092  Aira elegans M. S. Taylor; J. D. Jokerst 1980-5-15 2626 Butte On Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  CHSC33857  Aira elegans J. D. Jokerst; M. S. Taylor 1980-5-15 695 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Rd. Comment
  CHSC47600  Aira elegans Lowell Ahart 1975-4-15 203 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CAS-BOT-BC445354  Alisma plantago-aquatica A. A. Heller 1914-7-31 11630 Butte Sacramento Valley about 6 miles northwest of Chico Comment
  CHSC31016  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC94791  Alisma triviale Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CAS-BOT-BC131912  Allium Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain 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
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  POM169682  Allium amplectens A. A. Heller, H. E. Brown 1902-5-7 2917 Butte Berry Canyon (Near Clear Creek). Comment
  UC767479  Allium amplectens R. F. Hoover 1938-4-24 3246 Butte 3 mi n Chico Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek 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
  CAS-BOT-BC466713  Allium cratericola Elizabeth McClintock 1965-4-4 s.n. Butte Table Mountain east of Chico Comment
  JEPS122449  Allium hyalinum L. P. Janeway 2015-3-29 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5'. Comment
  CHSC75936  Allium jepsonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Incomplete Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  CHSC92935  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  JEPS108586  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop 927 Comment
  CDA13893  Allium obtusum var. conspicuum G. F. Hrusa, T. D. Wilfred 1997-5-8 13750 Butte Sierra Nevada; Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC36947  Allium obtusum var. conspicuum D. Burk; R. A. Schlising, K. Tharp 1982-6-16 4297 Butte NE part of county, NE of Oroville and Oroville-Quincy Hwy; at corner of Walker Plains. 1554 Comment
  CHSC49477  Allium obtusum var. obtusum Vernon Oswald 1985-4-29 1732 Butte Big Bald Rock. 990 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC132074  Allium peninsulare var. peninsulare A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville Comment
  POM110048  Allium peninsulare var. peninsulare C. C. Bruce 1897-03 1900 Butte Chico. Comment
  CHSC49478  Allium platycaule Vernon Oswald 1987-6-23 3028 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC63486  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte On the south side of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 914 Comment
  CHSC61356  Allium validum Lowell Ahart 1993-7-23 7106 Butte About 100 yards west of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  RSA337384  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CAS-BOT-BC170916  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte Bottoms along Big Chico creek, E of Chico Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CDA5624  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  UC1562407  Alopecurus carolinianus Lowell Ahart 1990-6-16 6517 Butte ca. 1/2 mi. s.w. Enterprise Bride across Lake Oroville (along McCabe Creek); McCabe Creek 243 Comment
  UCD80510  Alopecurus saccatus CNPS SN Foothill Team 2005-4-12 SNFN 0077 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET10511195  Alopecurus saccatus M. E. Banning 1969-4-18 Banning 76 Butte Table Mt., 1/2 mi. from Ore. City junction. 488 Comment
  CDA3266  Amaranthus albus L. Ahart 2002-10-17 9965 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
  CHSC116126  Amaranthus albus Lowell Ahart 2015-11-7 20615 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC26667  Amaranthus albus M. S. Taylor; M. Hayes 1977-8-16 1442 Butte Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  UC1562412  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte about 2 1/2 mi NE of East Gridley ( along the edges of Palm Avenue, about 1/12 [sic] mile E of Larkin Road) 30 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
  JEPS104288  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET10452870  Ammannia coccinea Mary Susan Taylor 1977-10-10 Taylor 1527 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  UC1563265  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
Read comments
1
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC61322  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS95918  Ammannia robusta Lowell Ahart 1999-8-13 8168 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
  UC1191591  Ammannia robusta Herbert L. Mason and Verne Grant 1945-7-10 12633 Butte n. of Marysville Butte (along Butte Creek, Grey Lodge Game Refuge - southern); Grey Lodge Game Refuge, Butte Creek 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
  CHSC61714  Amsinckia lycopsoides Scott Torricelli 1989-3-21 1 Butte On the N.E. corner of Humboldt Rd. and Forest Ave. Chico. 91 Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  UC726987  Amsinckia lycopsoides A. A. Heller 1939-3-23 15354 Butte near Wick's Corner (along the Highway) Comment
  CHSC37416  Amsinckia menziesii Andrew R. Shepard 1981-4-25 19 Butte Bidwell Municipal Park in Chico ca. 3000 ft sw of Horseshoe Lake and 50 ft e of Upper Park Road. 99 Comment
  CHSC38270  Amsinckia menziesii Vernon Oswald 1983-4-20 353 Butte Upper Bidwell Park, Chico, beside equestrian trail on the n side of Upper Park Rd. ca. 300 ft e of its junction with Wildwood Ave. 85 Comment
  UC172842  Amsinckia menziesii var. menziesii A. A. Heller 1913-4-7 10725 Butte hills 6 mi n Oroville Comment
  CHSC36307  Anagallis arvensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4362 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC81542  Anagallis arvensis Sabrina Wright 2000-4-27 Butte Chico. Verbena Ave., in flower bed. 60 Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  UCR21785  Andropogon virginicus Paul Reisentz 1979-5-13 s.n. Butte Canyon c. 3 mi southe of the Butte-Plumas Co. line, 1 mi north of Cresta Point Houses, Hwy 70 Comment
  CHSC98905  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68m elevation level), about 370 m north the railroad bridge. 69 Comment
  CAS-BOT-BC84691  Anthemis cotula Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  SEINET10473583  Anthemis cotula Mary Susan Taylor 1975-10-3 Taylor 939 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CAS-BOT-BC137780  Anthoxanthum odoratum Lowell Ahart 1981-7-7 2915 Butte Sierra Nevada. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road. 600 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC39235  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5217 Butte Vicinity of mouth of Flag Canyon. On top pf North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  JEPS87613  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek); road to Forbestown Reservoir, near Woodleaf Creek 762 Comment
  CAS-BOT-BC447661  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC46398  Aphanes occidentalis Lowell Ahart 1989-5-28 6276 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC28694  Apocynum androsaemifolium M. S. Taylor 1979-9-9 1921 Butte Inskip on the Skyway. 1467 Comment
  RSA193352  Apocynum androsaemifolium subsp. pumilum E. B. Copeland 1930-7-7 s.n. Butte Jonesville. 1650 Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SD1683  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville, in brush and open woods 1550 Comment
  UC436300  Aquilegia formosa E. B. Copeland 1930-7-12 Butte above Jonesville; head of Butte Creek area 1800 Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  CHSC52682  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-5 326 Butte Ca. 1.0 mi SW of Jonesville at Colby Creek. 1487 Comment
  CHSC52684  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 337 Butte 0.2 mi from jct of Bull Hill Rd. with Humboldt Rd. on Bull Hill Rd., near Butte Meadows. 1325 Comment
  POM196106  Aquilegia formosa var. truncata E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  UC600706  Arabis glabra E. B. Copeland 1931-6-22 Butte Jonesville 1500 Comment
  RSA755754  Arbutus menziesii L. Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  CHSC584  Arbutus unedo 1935-4-28 Butte Bidwell grounds, Chico. Comment
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  RSA633006  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27479 Butte Ponderosa Way, south of Cohasset. 750 Comment
  SEINET11989219  Arctostaphylos manzanita J. T. Howell 1975-1 51095 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC21775  Arctostaphylos manzanita subsp. manzanita Robert A. Schlising 1974-9-17 3157 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CAS-BOT-BC24296  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte About 2 mi. w. of Forest Ranch. Comment
  CAS-BOT-BC38532  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42637 Butte Magalia. 701 Comment
  CHSC44639  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2146 Butte First ridgeline east of and paralleling Camp Cr. in the canyon of the North Fork Feather River. Comment
  SBBG103606  Arctostaphylos mewukka subsp. truei J. T. Howell 1976-4-2 51569 Butte Paradise 609 Comment
  LA42209  Arctostaphylos nevadensis E. B. Copeland; 1930-7-6 437 Butte above Jonesville 2050.0 Comment
  CAS-BOT-BC46718  Arctostaphylos patula F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  POM209917  Arctostaphylos patula H. F. Copeland 1932-6-29 A- 7 Butte The Summit, Jonesville. Comment
  RSA381141  Arctostaphylos truei J. T. Howell 1975-6-15 51113 Butte Skyway & Montana Drive, Paradise. 609 Comment
  UCD52645  Arctostaphylos viscida John Thomas Howell 1976-4-2 51560 Butte In Upper Sonoran Life Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47383  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51099 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC109110  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the high bank, on the south side of Ten Miles House Road, about 1/2 miles west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CDA31488  Aristida oligantha L. Ahart 2000-9-27 8692 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
  CHSC38786  Aristida oligantha Vernon Oswald 1983-7-28 934 Butte Upper Bidwell Park, Chico, near parking Area A on Upper Park Rd. 83 Comment
  UCD56476  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut, La Porte Road. Comment
  CHSC25404  Aristida ternipes var. hamulosa Hayes; Warner 1977-9-11 57 Butte Exactly 3.5 mi e of the Hwy 99 overpass on Hwy 32 e of Chico, ca. 1 m s of road. 137 Comment
  CHSC41979  Aristida ternipes var. hamulosa Lowell Ahart 1986-11-14 5466 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
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  UC543770  Aristolochia californica Herbert L. Mason 1927-5-10 3717 Butte ne of Oroville (Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  CAS-BOT-BC295836  Arnica dealbata A. A. Heller 1928-6-28 14658 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC43188  Arnica dealbata Robert Banchero 1981-8-4 641 Butte Ca 1.7 mi n of Scotts-John Rd and Jonesville Rd jct. Meadow. 1828 Comment
  UC832874  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte edge of the forest about Chico Meadows Chico Meadows 1219 Comment
  POM195762  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  UC492750  Arnica mollis H. F. Copeland 1927-9-4 1122 Butte Jonesville 1524 Comment
  CAS-BOT-BC146271  Arrhenatherum elatius var. elatius Lowell Ahart 1988-7-31 6151 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC43269  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC36078  Asarum lemmonii R. A. Schlising 1982-6-10 4291 Butte N of Paradise and Magalia at old Powellton site; along Kanaka Creek. 1097 Comment
  SEINET10862406  Asclepias cordifolia R. M. Austin Austin 869 Butte Iron Canyon Comment
  SEINET10961630  Asclepias cordifolia R. M. Austin Austin 868 Butte Iron Canyon Comment
  UC392183  Asclepias cordifolia E. B. Copeland 1929-7-13 Butte Jonesville 1600 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  SEINET10741574  Asclepias speciosa R. M. Austin 1896-1 Austin 231 Butte Colby Comment
  CHSC23404  Aspidotis californica M. S. Taylor 1976-3-6 1008 Butte Above Macabes Creek, ca. 50 ft e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  UC474208  Aspidotis densa H. F. Copeland 1928-4-3 200 Butte near Magalia 609 Comment
  SEINET10872024  Aster chilensis var. medius Lowell Ahart 1985-10-12 Ahart 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  CHSC44893  Aster radulinus Lowell Ahart 1988-7-24 6131 Butte About 1/20 mile northeast of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 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
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  CAS-BOT-BC68697  Athyrium filix-femina var. californicum Javier Penalosa 1962-6-18 2445 Butte N. of Brush Creek on old Oroville-Quinney Road, near confluence of French and Peavine Creeks. 609 Comment
  CHSC94559  Athyrium filix-femina var. cyclosorum Lowell Ahart 2006-9-11 13271 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
  CHSC42512  Athysanus pusillus Lowell Ahart 1987-5-22 5665 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC1586519  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte about 10 mi se Gridley (on n side of Rutherford Road, about .12 mi w of Pennington Road, w of Parking Area, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area 30 Comment
  SEINET516429  Atriplex prostrata Lowell Ahart 1981-1 3221 Butte Small part from a large plant, growing on damp soil on the sides of a deep ditch, on the N side of the rd. and near the entrance to the Gray Lodge Waterfowl Management Area Headquarters, W of Pennington Rd., about 12 mi. SW of Gridley. 30 Comment
  CAS-BOT-BC176606  Atriplex serenana var. serenana Lowell Ahart 1977-7-24 s.n. Butte Gray Lodge, 10 miles southwest of Gridley 30 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  UC1562367  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte ca. 4 1/2 mi sw of Oroville (ca. 1/4 mi s of Feather River, ca. 4/10 mi w of Pacific Heights Rd.) 30 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  JEPS121912  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10932380  Berberis aquifolium Mary Susan Taylor Taylor 454 Butte Campus of the California State University, Chico. 61 Comment
  CHSC33575  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-21 3553 Butte Ca. 500 ft s of creek crossing rd, e side of spur rd (to Old Utah Mine) ca. 0.5 mi n of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 792 Comment
  CHSC60575  Berberis aquifolium var. dictyota Vernon H. Oswald; Lowell Ahart 1993-4-19 5286 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 859 Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  CHSC27240  Betula populifolia P. Moyer 1972-3-18 150 Butte CSUC campus. L. S. courtyard. 60 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
  CHSC94060  Bistorta bistortoides R. D. Fischer 2004-6-20 783 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants growing on the moist soil of the eastern side of Chico Meadows. 1371 Comment
  SD1169  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville, wet meadows and swamps 1550 Comment
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  RSA475190  Boisduvalia cleistogama Aaron Liston, Sara Meury 1988-5-28 743 -6 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  CHSC57209  Bolboschoenus glaucus L. P. Janeway; Vern Oswald 1989-4-17 3223 Butte Rice field on east side of Butte Creek 2.5 mi south of Biggs-Princeton Road (Afton Road). 18 Comment
  SEINET10644682  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3674 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC31373  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte Gray Lodge Game Refuge, NW of Pennington. Comment
  UC600575  Botrychium H. F. Copeland 1932-7-14 Butte Jonesville, below cabin 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
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  JEPS120578  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CHSC110130  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Humboldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  CHSC3618  Brassica rapa John Francis 1966-2-21 18 Butte Orchard across road from Durham Cemetery. Comment
  SFV10381  Brassica rapa M. L. Vincent 1964-4-8 507 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  RSA724877  Brickellia californica L. Ahart 2006-9-11 13335 Butte South edge of the North Fork of the Feather River, north side of Highway 760, 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
  CHSC45643  Brickellia greenei Vernon H. Oswald 1983-8-24 1019 Butte Humboldt Rd. between Lomo and Butte Meadows, 3.3 mi NE of its jct. with Calif. Hwy 32. 1402 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
  CHSC10552  Briza minor Lowell Ahart 1965-4-20 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10753292  Briza minor Christopher 2003-4-21 CHRISTOPHER 229 Butte Off Hwy. 99. Ahart Family Ranch along boundary on access road and edge of field. Vernal pool prairie and roadside ditch. With Limnanthes, Lilaea, Briza and Spergula 41 Comment
  UC143058  Brodiaea californica var. californica Mrs. R. M. Austin May 1896 45 Butte Iron Canyon Comment
  RSA125999  Brodiaea coronaria subsp. coronaria E. K. Balls 1957-5-23 22533 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  CHSC78345  Brodiaea minor Lowell Ahart 2000-6-17 8480 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  UC768609  Brodiaea minor R. F. Hoover 1937-5-18 2237 Butte 3 mi n Chico Comment
  SEINET8194029  Brodiaea minor M. J. Williams, W. Roderick 1984-5-25 84- 25 -1 Butte Near Pontz Road, near Cherokee. 305 Comment
  CHSC112931  Brodiaea nana B. Castro 2012-5-11 1920 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca. 0.4 mi N of jcn of Hwy 99/Hwy 162W and ca 0.4 mi S of screened CDFG fishery facility. 36 Comment
  CAS-BOT-BC486484  Brodiaea sierrae M. S. Taylor 1982-6-24 4749 Butte W. side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70. 670 Comment
  RSA700240  Bromus carinatus L. Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  CAS-BOT-BC156294  Bromus caroli-henrici Lowell Ahart 1984-5-31 4656 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CDA42771  Bromus catharticus L. Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  JEPS104210  Bromus commutatus Lowell Ahart 2003-5-27 10222 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CAS-BOT-BC156069  Bromus diandrus Lowell Ahart 1977-6-16 1473 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC42848  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC31946  Bromus hordeaceus J. D. Jokerst 1979-4-20 1211 Butte Top of North Table Mt., ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC4367  Bromus hordeaceus M. Hillier 1966-5-30 Butte In field by ski jump nw of CSC gym. Chico. Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC49511  Bromus japonicus Vernon Oswald 1987-5-28 2935 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  SEINET10507836  Bromus laevipes Lowell Ahart 1985-5-15 Ahart 4987 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  CHSC6671  Bromus madritensis subsp. rubens Marilyn Lee 1968-3-15 110 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC161964  Bromus rubens Lowell Ahart 1987-5-6 5553 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC42862  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  UCD59867  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 miles E of Camp 18, ca. 0.8 mi. E of Feather Falls. 1000 Comment
  CAS-BOT-BC18156  Bulbostylis capillaris Lowell Ahart 1980-7-20 2475 Butte At Little Bald Rock. 1100 Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  HSC32577  Calandrinia ciliata Dale R. Gradek 1974-4-20 26 Butte N end of Table Mtn., near Oroville 305 Comment
  SEINET10572680  Calandrinia ciliata var. menziesii Mary Susan Taylor Taylor 991 Butte Bidwell Park, Chico. Comment
  CHSC46260  Callitriche stagnalis Vernon Oswald 1989-5-19 3778 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond located in an old channel of the Sacramento River. 45 Comment
  CHSC59485  Calocedrus decurrens Michael Deal 1992-4-19 4 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  CHSC29726  Calochortus albus J. D. Jokerst 1980-4-17 585 Butte Top of North Table Mt, northern tip. 472 Comment
  CAS-BOT-BC487511  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  CDA35769  Calochortus albus J. R. Keck Jr., D. Pooler 1980-5-19 PDR# 330181 Butte Paradise; Jordan Hill Road. 0 Comment
  RSA21309  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CHSC2235  Calochortus luteus N. Maxwell 1936-6-27 Butte Richardson Springs road. 91 Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC24843  Calochortus monophyllus T. L. Reynolds 1976-4-23 55 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. 121 Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  SEINET12048524  Calochortus monophyllus G. C. Russell 1975-1 1 Butte 8.2 km NE of Chico Municipal Airport 325 Comment
  CDA14083  Calochortus superbus G. F. Hrusa, T. D. Wilfred 1997-7-3 13967 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from E. Comment
  CHSC34489  Calochortus superbus J. D. Jokerst 1979-5-30 256 Butte SW of Humbug Rd, 3.1 mi N of jct with Helltown Rd. Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  UC600484  Caltha biflora E. B. Copeland June, 1930 Butte Willow Creek Meadow Jonesville. 1550 Comment
  CAS-BOT-BC175757  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadows by North Willow Creek 1550 Comment
  CHSC25402  Calycadenia ciliosa M. P. Hayes 1977-9-11 56 Butte Exactly 3.5 mi E of the Hwy 99 overpass on Hwy 32 in Chico, ca 3-10 m S of the road. 137 Comment
  CAS-BOT-BC273297  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi. nw. of Chico Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  RSA337395  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CAS-BOT-BC106093  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CAS-BOT-BC106120  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. Paradise East quad 563 Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA32854  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UCD129789  Calycadenia oppositifolia M. Vincent 1963-6-6 374 Butte 1 mile west in Mt. Meadow from Nelson Bar Road. Comment
  JEPS104278  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, ca 2 mi n and 1 3/8 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  JEPS15906  Calycadenia truncata R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of, Chico Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC275376  Calycadenia truncata var. truncata H. M. Hall 1914-7-18 9756 Butte Little Chico Creek 152 Comment
  CAS-BOT-BC90929  Calycanthus occidentalis Clarence R. Quick 1952-7-1 52 -115 Butte Sierra Nevada. Mile Creek Road between Feather River Highway and Coyote Gap. Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 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
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  UC82816  Calyptridium monospermum Mrs. R. M. Austin 1896-7-1 696 Butte Colby Comment
  JEPS121899  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  RSA718168  Calystegia malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CHSC48619  Camissonia contorta Vernon Oswald 1988-3-17 3259 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  SEINET10463078  Campanula prenanthoides Mary Susan Taylor 1978-7-18 Taylor 1673 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
  SEINET10463084  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte ON RD FROM PRATTVILLE TO CHICO NEAR CHICO Comment
  SEINET10972407  Campanula prenanthoides Howell 1976-7-14 Howell 51818 Butte SIERRA NEVADA, JUST NE OF PULGA BRIDGE, SHADED, GRANITE-LIKE ROCK 1370 Comment
  CHSC109004  Capsella bursa-pastoris Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17918 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC42508  Cardamine breweri Lowell Ahart 1987-5-6 5566 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA4216  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 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
  SD8269  Cardamine californica Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  CHSC34480  Cardamine oligosperma J. DiVittorio 1974-3-20 1 Butte S side of Holt Hall, Cal. State University, Chico campus in planter. 57 Comment
  CHSC20112  Cardamine pachystigma var. dissectifolia M. S. Taylor 1975-5-9 570 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC87569  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail north of Disk Golf Course. Another population observed in park on lower Yahi Trail. UTM: 10608843E 4404282N. 313 Comment
  CHSC109607  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-5-14 18050 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CAS-BOT-BC18462  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2937 Butte Willow Creek at crossing of Humbug Summit Road. 1874 Comment
  CDA13290  Carex amplifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13138 Butte Plumas National Forest; Dense colony on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC94002  Carex amplifolia R. D. Fischer 2004-6-20 782 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In drainage ditch at north end of camp where Scout Road passes through Chico Meadows. 1371 Comment
  JEPS110198  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS110197  Carex angustata Lowell Ahart 2006-7-16 12974 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC18053  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville. 1700 Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  CHSC43913  Carex barbarae L. P. Janeway 1987-5-7 2027 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. Adj to mdw and Rubus riparian area at penstock. 160 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SBBG119879  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte near rd along W side of lower Pinkard Crk, 1.2 rd mi N of Lost Crk Reservoir dam 1021 Comment
  CAS-BOT-BC34373  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte Meadow on south side of Butte Creek 0.5 mile west of Cherry Hill. 1402 Comment
  CHSC44104  Carex cusickii L. P. Janeway 1987-6-26 2325 Butte Open mdw just NW of Logue Mdws along road to Lynch Mdws. 1325 Comment
  CHSC82908  Carex cyrtostachya L. P. Janeway; B. Castro 2002-7-28 7689 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  CHSC47064  Carex densa L. P. Janeway; Vern H. Oswald 1989-4-17 3219 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). On E side of the levee along edge of fallow rice field. 18 Comment
  SEINET7556724 Image available Carex densa Unknown 2003-5-8 7780 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  UC825096  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC105511  Carex fracta Lowell Ahart 2010-9-21 17199 Butte On damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 Comment
  UCD140345  Carex fracta L. P. Janeway; R. A. Schlising, B. Castro, P. Broyles 1987-7-19 2502 Butte Coon Hollow, 1.0 mile SE of the Humbug Summit Road. 1661 Comment
  CHSC44517  Carex gracilior Lowell Ahart 1988-4-15 5960 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS121937  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC47134  Carex laeviculmis L. P. Janeway 1988-6-25 2870 Butte Near Coon Cr and near Bull Hill Rd (Skyway) 1.0 mi from Skyway (jct with Humbug Summit Rd). 1554 Comment
  CHSC76846  Carex laeviculmis L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio. 1997-6-13 5138 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  CHSC92369  Carex laeviculmis Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10501 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262), (WGS84). 1551 Comment
  JEPS121925  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  UCD77464  Carex laeviculmis Robert E. Preston 2003-7-17 2161 a Butte Ca. 1 mi SW of Butte Meadows, on N side of The Skyway. 1437 Comment
  CAS-BOT-BC31123  Carex lemmonii L. P. Janeway; Robert A. Schlising 1988-7-22 3069 Butte Jonesville quad. Seep just above the High Lakes Rd. 3.4 mi W of the pass. In the canyon of Philbrook Creek. 1905 Comment
  HSC87069  Carex lemmonii L. P. Janeway 1987-6-27 2344 Butte Just E of Keyser Creek, 4.3 mi. N of Ramsey Bar along Concow Rd. 1479 Comment
  JEPS109921  Carex lemmonii Dean W. Taylor 2006-8-17 19643 Butte Keyser Creek; boggy fen with patterned ground [ca. 5 miles NNE of Stirling City] 1524 Comment
  UCD140475  Carex lemmonii L. P. Janeway 1987-6-27 2357 Butte Bald Mountain; along the Concow Road. 1694 Comment
  JEPS109228  Carex limosa D. W. Taylor 2004-7-21 19202 Butte Coon Hollow, pond north of Forest road 26N15 (High Lakes Road) 1.8 miles E of junction of Forest Service 25N05. Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  UC532223  Carex multicaulis H. F. Copeland 1931-6-10 1546 Butte woods between Willow Creek and Colby Creek; Jonesville Comment
  CAS-BOT-BC32157  Carex multicaulis Lewis Samuel Rose 1937-6-10 37366 Butte 8 mi E of Hurleton 792 Comment
  CHSC44102  Carex nervina L. P. Janeway 1987-6-27 2341 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Rd via dirt rd. 1508 Comment
  CHSC44117  Carex nervina L. P. Janeway 1988-7-29 3116 Butte Along Butte Cr where Humboldt Rd crosses near Cherry Hill. 1402 Comment
  CAS-BOT-BC119046  Carex pellita Herbert Faulkner Copeland 1920-8-1 174 Butte Jonesville Meadow 1219 Comment
  CHSC52241  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  UCR228226  Carex pendula Peter F. Zika 2010-5-16 24824 Butte Sacramento Valley, Janeway's station, Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico 45 Comment
  CHSC102840  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC47132  Carex praegracilis L. P. Janeway 1987-5-20 2058 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CHSC48558  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3088 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CHSC83190  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  SEINET7577169 Image available Carex subfusca Ray Tallent 1987-8-18 955 Butte Lassen National Forest. River bank just above bridge near West Branch (of the Feather River) campground. 1620 Comment
  OBI22634  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  SEINET7577207 Image available Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek. 1500 Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  CDA34760  Carex vernacula L. Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  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
  CHSC102214  Carex xerophila L. P. Janeway 2009-11-22 9968 Butte Northern High Sierra Nevada (northern edge). 'Magalia serpentine;' east side of Coutolenc Road about 0.1 km north of Skyway; between Skyway and the first bend of the gated road down to 'Magalia 72 Dam' diversion on West Branch Feather River. 700 Comment
  HSC93554  Carex xerophila G. Fred Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Corner of Skyway Rd. and road to Paradise Lake at N boundary of Magalia 580 Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  CAS-BOT-BC249113  Castilleja affinis Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC25364  Castilleja applegatei subsp. pinetorum Marc P. Hayes 1977-3-20 1 Butte Ca. 2.6 km nw of Jarbo Gap, 4.1 km ssw of Pulga, 10 m on n side of Hwy 70. 650 Comment
  CHSC39267  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. Section 1. 550 Comment
  JEPS123825  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 -B Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CHSC115343  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 3/4 mile northeast of the Honcut Cemetery, about 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 71 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC3318  Castilleja exserta M. Gregg 1966-3-28 54 Butte On Cherokee Rd. to the top of Table Mt. north of Oroville. Comment
  CHSC3841  Castilleja exserta Lloyd Dunkel 1965-4-11 23 Butte In pasture, ca. 100 yards n e of Cactus Ave. at Manzanita Ave., Chico. 32 Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  CHSC30794  Castilleja lacera M. S. Taylor; J. D. Jokerst 1980-4-18 2533 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew, in Foothill Woodland. 518 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  CHSC93991  Castilleja lacera R. D. Fischer 2004-6-20 777 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. West of pond in a cleared area. 1371 Comment
  JEPS80632  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte ca 0.25 mi e Cohasset Rd. (ca 9 mi ne of Chico); Cohasset Ridge 396 Comment
  UC721677  Castilleja lacera A. A. Heller and H. E. Brown 1902-5-6 5459 Butte near Clear Creek; Berry Canyon Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CHSC11890  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Jonesville. In 'Scotch John' meadow. 1700 Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 Butte Gray Lodge Wildlife management Area W of Gridley, S side of Rutherford Rd. at Parking Lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC195580  Catapodium rigidum Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC40501  Caulanthus lasiophyllus Lowell Ahart 1983-5-7 3966 Butte Peter Ahart Ranch, about 1.5 miles north and 2 and 1/8 miles east of Honcut. 50 Comment
  CAS-BOT-BC48548  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville 1550 Comment
  CAS-BOT-BC48816  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 DOB 923 b Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road 700 Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC50822  Ceanothus integerrimus John Thomas Howell 1973-7-9 49698 Butte Sierra Nevada - near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC77441  Ceanothus integerrimus Tim Stofer 1997-4-9 2 Butte Located on the east side of trail 120 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC94159  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  UC203678  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte 8 mi from Chico (on the Chico-Centerville rd) Comment
  RSA518960  Ceanothus integerrimus J. T. Howell 1975-6-15 51116 Butte Skyway and Montana Drive, Paradise. 610 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC51147  Ceanothus lemmonii John Thomas Howell 1975-6-15 51115 Butte Paradise, Skyway near Billie Road 609 Comment
  SEINET10493643  Ceanothus lemmonii Mary Susan Taylor 1979-10-13 Taylor 2268 Butte T22N R4E se 1/4 sec 32. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 8.7 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 945 Comment
  CHSC32744  Ceanothus prostratus M. S. Taylor; L. Hanson, J. Horner 1981-4-16 3542 Butte N side of 21N31Y, ca. 1/4 mi. w of Bald Rock Rd, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  JEPS108984  Centaurea melitensis Lowell Ahart 2006-6-9 12659 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  NY444425  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte At Chico Comment
  RSA770101  Centaurium muehlenbergii L. Ahart 2008-11-4 15402 Butte Sides of Potter Ravine, below high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 243 Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  UCD130181  Centromadia fitchii P. B. Kennedy 9-10 Aug 1921 s.n. Butte Biggs. Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  JEPS108153  Cerastium arvense L. P. Janeway, J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge 991 Comment
  CHSC10648  Cerastium glomeratum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC388268  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  SFV1802  Cercis occidentalis B. Fuller 1961-4-1 s. n. Butte Butte Creek Canyon. Honeyrun Road below Paradise. Comment
  CHSC50100  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-24 4171 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 286 Comment
  CAS-BOT-BC277628  Chaenactis glabriuscula var. megacephala Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  JEPS122287  Chamaesyce maculata Lowell Ahart 2014-8-24 19729 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS95931  Chamaesyce maculata Lowell Ahart 1999-8-13 8160 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
  POM215884  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  RSA754842  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1.5 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC42958  Chamaesyce nutans Lowell Ahart 1987-7-3 5772 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45277  Chamaesyce nutans Vernon Oswald 1988-10-29 3721 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  SEINET10529917  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2663 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
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10904479  Chenopodium ambrosioides Mary Susan Taylor 1979-10-13 Taylor 2248 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC62025  Chenopodium atrovirens Vernon H. Oswald 1989-8-9 3931 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.5 mi sw of Humboldt Rd, ca. 1.3 mi (air) sw of Butte Meadows. 1295 Comment
  CDA3042  Chenopodium botrys L. P. Janeway, B. Castro 1999-6-4 6450 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  CAS-BOT-BC451482  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CHSC94161  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  UCD117415  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC2254  Chlorogalum angustifolium N. Maxwell 1929-5-15 Butte Cohasset Road. 304 Comment
  CAS-BOT-BC497799  Chlorogalum angustifolium Lowell Ahart 1989-5-23 6261 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC30812  Chlorogalum pomeridianum M. S. Taylor 1978-7-21 1841 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  JEPS55717  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 821 Butte about 3 mi e Paradise (at junction of Dendelar Circle and Steam Road) Comment
  CHSC6039  Choisya ternata M. MacArthur 1968-6-12 163 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC82642  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the west edge of Lumpkin Road, about 1/8 mile south of the Enterprise Bridge across Lake Oroville, about 11 1/2 miles (air) northeast of Oroville. Comment
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CHSC103750  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 381 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
  UC762645  Chorizanthe polygonoides var. polygonoides R. F. Hoover 1938-4-24 3241 Butte 3 mi ne Chico; n of Chico Comment
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  CAS-BOT-BC247537  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  CHSC26733  Cicendia quadrangularis M. S. Taylor; M. Hayes 1978-4-14 1564 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
  RSA325174  Cicendia quadrangularis M. S. Taylor, L. Ahart, Jim Jokerst 1984-4-6 5398 Butte Approximately 0.5 mile north of Kunkle Reservoir, on east side of Pentz-Magalia Highway, ca. three miles south of Paradise. Comment
  JEPS119735  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte Lower Bidwell Park, Chico. Comment
  CHSC42911  Cicuta douglasii Lowell Ahart 1987-7-17 5838 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south- east of Jarbo Gap. 274 Comment
  CHSC55308  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte Along Haphazard Creek, about 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Brush Creek. 1219 Comment
  CHSC26693  Cirsium andersonii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1498 Butte On jct of Scotts John Rd and Humbug Rd, above Snag Lake. 1828 Comment
  CAS-BOT-BC278077  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 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
  POM180913  Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). Comment
  CHSC46129  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CAS-BOT-BC164135  Clarkia concinna L. P. Janeway 1993-6-16 4390 Butte Upper east-facing slopes of North Fork Feather River Canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap 670 Comment
  UCD80473  Clarkia gracilis CNPS SN Foothill Team 2005-5-2 SNFN 0195 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  CAS-BOT-BC164525  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-3 63 -54 Butte 12 miles northeast of Chico Comment
  POM37904  Clarkia gracilis subsp. albicaulis R. M. Austin 1883-05 s.n. Butte [No location information on label.] Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  CHSC50052  Clarkia gracilis subsp. gracilis Lowell Ahart 1990-4-8 6437 Butte On banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS100683  Clarkia mildrediae Dean W. Taylor 1995-8-6 15377 Butte 2 air mi NE of Stirling City; Plumas National Forest 1127 Comment
  JEPS94988  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  CHSC70739  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte South end of Swayne Hill, along Road 23N28 0.8 mi west of Road 22N34. South-facing road cutbank. 731 Comment
  SEINET12193695  Clarkia purpurea J. R. Birmingham 1972-1 2 Butte near Horseshoe Lake, Bidwell Park, Chico 181 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  SEINET10939936  Clarkia purpurea subsp. quadrivulnera Mary Susan Taylor 1978-5-7 Taylor 1612 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CHSC2512  Clarkia rhomboidea W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. 396 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  UC1730248  Clarkia rhomboidea L. P. Janeway 1993-6-9 4372 Butte SE of Swayne Hill (slope above French Creek, along Road 22N34 1.8 mi S of the low water crossing) 621 Comment
  CAS-BOT-BC164788  Clarkia rhomboidea A. A. Heller 1928-5-27 14562 Butte At the sawmill on the Neal Road, Paradise Comment
  CAS-BOT-BC164801  Clarkia rhomboidea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River at junction with road to Las Plumas Comment
  SEINET10492534  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte of Lake Madrone, at Oroville-Quincy Hwy turnoff, ca 10 miles NE of Oroville; Yellow Pine Forest. 2000 feet. 610 Comment
  CHSC56559  Clarkia unguiculata L. P. Janeway 1991-6-1 3986 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill. 304 Comment
  SD1562  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville; along stream 1500 Comment
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  CHSC33724  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-5 3499 Butte At end of Dark Canyon Rd near turnout and restroom, up from boat ramp to W Br Feather River, ca. 3.5 mi s of Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 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
  CHSC56069  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-7-2 2961 Butte Along road to French Creek, 1.2 mi south of Coyote Gap. Shady seepy area above the road. 1127 Comment
  RSA715846  Claytonia perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET11931358  Claytonia perfoliata S. C. Joslin 1978-1 14 Butte ca 4 mi NW of Chico on Cohasset Rd at intersection with Richardson Springs Rd 91 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
  CHSC3582  Claytonia perfoliata subsp. perfoliata Susan Carrauthers 1966-2-21 14 Butte Ca. 5 mi S. of city of Chico 1/2 mi E. of Butte Creek beside old Chico-Oroville Road. 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
  CHSC110129  Clematis lasiantha L. P. Janeway 2012-3-21 10799 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
  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
  HSC66227  Clematis lasiantha Thomas A. Welgan 1979-4-24 19 Butte 11 mi. E of Hwy. 299, 10 ft. N of Skyway 305 Comment
  SEINET5337773  Clematis lasiantha S. Dean 1979-4-24 s.n. Butte Hwy 70. Feather River Canyon. Oroville-Quincy. Approximately 20 miles from Oroville. 1067 Comment
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  CHSC1735  Collinsia sparsiflora H. Summers 1929-3-25 Butte Richardson Springs Road. 152 Comment
  POM43045B  Collinsia sparsiflora var. bruceae C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  JEPS108719  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC26839  Collinsia torreyi M. S. Taylor 1978-6-24 1648 Butte Humbolt Summit, Butte Co and Tehama Co line. 2133 Comment
  CHSC26171  Collomia heterophylla J. P. Kroessig 1977-6-14 39 Butte Ca 8 km n and w on dirt road at n end of Concow Road, ca 13 km ne of Paradise. 1100 Comment
  UC129469  Collomia heterophylla Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC41369  Collomia tinctoria R. A. Schlising; Sandra Morey 1982-8-31 4381 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  CHSC74669  Colutea arborescens B. Castro; Elizabeth McClintock 1988-3-7 255 Butte Lower Bidwell Park, Chico. On North Park Drive, on N side of Big Chico Creek, near end of bridge which connects with a large thicket of this species on the opposite side of the creek in the vicinity of Cedar Grove. Comment
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  UC2026856  Comandra umbellata subsp. californica Lowell Ahart 2012-6-28 18246 Butte At the base of Pole AP#3, where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Foothill Woodland. Comment
  UCD101802  Comandra umbellata subsp. californica Joseph Manelis 1967-5-21 43 Butte northeast of Paradise, near North Fork of Feather River. 1066 Comment
  POM168516  Corallorhiza maculata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC30950  Cordylanthus pilosus subsp. trifidus L. Ahart 1980-7-4 2450 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  CHSC48309  Cornus sericea subsp. sericea Vernon Oswald 1983-6-22 736 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  CHSC450  Cornus sessilis V. Holt 1935-3-31 Butte De Sabla. 762 Comment
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  RSA0019461  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  SBBG119778  Coronilla varia L. Ahart 2006-6-24 12862 Butte E side of dirt rd (Ponderosa Way), on Cohasset Ridge, ca. 4 air mi NE of Cohasset 1113 Comment
  UC1562379  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  SEINET12091577  Corydalis caseana Unknown 1983-1 4301 Butte ca 1 mi E of Butte Meadows, T26N, R4E, NW Section 28 1450 Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 60 Comment
  CHSC100488  Cotoneaster pannosus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC58279  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC77814  Cotula australis Lowell Ahart 2000-3-25 8323 Butte Waste area near the west side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CHSC105268  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CAS-BOT-BC427665  Crassula connata Lowell Ahart 1990-4-8 6442 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CHSC54384  Crassula connata M. Bailey 1991-3-15 553 Butte Butte College Campus. In field e of Williams Road, ca 1/4 mi n of Pentz Road. 85 Comment
  SEINET9305827  Crassula connata Unknown 1963-3-22 63019 Butte Near summit of Sugarloaf Peak, Campbell Hills. In shallow soil on basalt. Comment
  SEINET12215662  Crassula erecta Unknown 1977-1 19 Butte ca 75 m NW of Cherokee Road, North Table Mountain, 8 km N of Oroville 366 Comment
  SEINET10449717  Crassula muscosa Mary Susan Taylor 1980-4-16 Taylor 2492 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC40898  Crassula saginoides Lowell Ahart 1985-11-5 5227 Butte Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 269 Comment
  CHSC102871  Crataegus monogyna L. P. Janeway; B. Castro 2010-4-30 9971 Butte Sacramento Valley. Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 100 m west of intersection of E. 8th Street and El Monte Avenue. 74 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC47474  Crucianella angustifolia Lowell Ahart 1973-5-24 220 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET11091472 Image available Crucianella angustifolia Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-1 3282 Butte Peter Ahart Ranch, ca. 2.5 mi NNE of Honcut between Oroville & Marysville 30 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 Comment
  UC1594584  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 Comment
  SEINET10497276  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4649 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10497604  Cryptantha hendersonii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4180 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC39025  Cryptantha milobakeri R. A. Schlising 1983-5-13 4405 Butte Bald Rock Dome area in e-central part of county. 548 Comment
  UC600569  Cryptogramma acrostichoides E. B. Copeland 1930-7-12 Butte Jonesville, Upper Butte Creek area Jonesville 1800 Comment
  UCR168514  Cupressus bakeri H. F. Copeland 1928-4-3 999 Butte Near Magalia 732 Comment
  CHSC50547  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-5 4348 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  JEPS98274  Cuscuta campestris Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1476882  Cuscuta howelliana Lowell Ahart 1979-10-7 Butte Honcut Honcut Quad. (Peter Ahart Ranch) 35 Comment
  SBBG127994  Cuscuta occidentalis L. Ahart 2010-9-21 17232 Butte S side of poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  NY43591  Cydonia oblonga S. Bianco 1995-11-10 1060 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  CHSC27981  Cymopterus terebinthinus var. californicus M. S. Taylor 1978-7-18 1708 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  JEPS105911  Cymopterus terebinthinus var. californicus Lowell Ahart 2004-8-2 11334 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  UC480689  Cynoglossum grande H. F. Copeland 1923-2-24 107 Butte Ferny Way near Chico Comment
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC100230  Cyperus difformis John Dittes 2003-10-8 850 -A Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC10729  Cyperus difformis Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114603  Cyperus eragrostis James D. Jokerst 1983-1-17 1687 Butte Table Mountain, W edge of the mesa ca. 75 m N of point where Flag Canyon ends in a waterfall. 396 Comment
  CHSC107575  Cyperus eragrostis Lowell Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile HOuse Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC84152  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  RSA754819  Cyperus eragrostis L. Ahart 2009-6-30 15968 Butte E side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  RSA92299  Cyperus eragrostis F. W. Peirson 1926-6-20 6763 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  SEINET10466874  Cyperus eragrostis Mary Susan Taylor 1978-9-8 Taylor 1881 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC66365  Cyperus erythrorhizos Vernon H. Oswald 1996-6-20 7828 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 2, Sanctuary II. 33 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
  SEINET3909602  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.; 0 37 Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  SEINET7582011 Image available Cyperus flavicomus Lowell Ahart 1984-9-24 4810 Butte Middle Honcut Road, west of Honcut, along the edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. Comment
  RSA0060845  Cyperus fuscus Lowell A. Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  RSA695518  Cyperus fuscus L. Ahart 2000-7-23 8603 Butte About 12 mi (air) SW of Chico, near a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mi SE of Ord Ferry, about 2 mi SE of Ordbend. 32 Comment
  CHSC39406  Cyperus niger L. Ahart 1983-9-17 4432 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 182 Comment
  JEPS124350  Cyperus niger Lowell Ahart 2015-10-26 20598 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC113846  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mi NE of Kunkle Res., S of Paradise. 600 Comment
  CHSC33631  Cyperus squarrosus R. D. Preston; R. A. Schlising 1981-6-21 29 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  SEINET7582975 Image available Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  RSA263830  Cyperus strigosus J. T. Howell 1959-9-20 34636 Butte Eastern outskirts of Oroville. 61 Comment
  CHSC87954  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  JEPS113229  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock 844 Comment
  RSA699257  Cystopteris fragilis L. Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  RSA0045626  Dactylis glomerata Lowell A. Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CAS-BOT-BC445502  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte 3 miles west of Chico Comment
  UCD169810  Danthonia californica Lowell Ahart 2010-9-21 17230 Butte About 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. On the north side of a poor dirt road. 1899 Comment
  UC114886  Darmera peltata Mrs. R. M. Austin 1896-1 93 Butte Colby Comment
  CAS-BOT-BC173264  Delphinium M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico 457 Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  CAS-BOT-BC9924  Delphinium nudicaule Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CHSC2487  Delphinium nudicaule W. Fitzwater 1958-4-19 Butte Cohasset Rd., Chico area. 396 Comment
  CHSC11813  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  UC1564784  Delphinium nuttallianum V. Oswald and L. Ahart 1989-6-27 3819 Butte ridge e Scotts John Creek (ca 3.3 (air) mi e of Jonesville) 2042 Comment
  UC392243  Delphinium nuttallianum E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  SEINET5338095  Delphinium nuttallianum D. H. Heinze 1963-4-16 s.n. Butte Chico Calif., Valley grassland. 61 Comment
  CHSC2463  Delphinium patens subsp. patens R. Carter 1964-3-23 58 Butte 5 mi. E of Chico Rd. on Cherokee Rd. Ca. 200 yds. E of rd. along base of cliffs. 60 Comment
  CHSC51903  Delphinium patens subsp. patens Richard Steward 1988-4-2 2 Butte Ca 6 mi N, 0.4 mi NW of Paradise. 701 Comment
  CHSC83898  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  CAS-BOT-BC121611  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC121620  Delphinium patens subsp. patens Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CAS-BOT-BC121622  Delphinium patens subsp. patens Alice Eastwood 1921-5-22 10567 Butte Los Vergils Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CAS-BOT-BC16977  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clar Creek) Comment
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  SFV1356  Dendromecon rigida B. Fuller 1961-4-28 s. n. Butte Sierra Nevada Paradise. Stearns and Harrison Roads. 535 Comment
  UC726608  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  SEINET10448610  Dentaria californica Mary Susan Taylor 1973-1 Taylor 48 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10907269  Dentaria pachystigma var. dissectifolia Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3524 Butte T22N R4E ne sec 2 to nw sec 1, Pulga SW quad. N-facing grassy serpentine slope, ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. Elevation 2700 to 2900 ft. 731 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
  CHSC2140  Deschampsia danthonioides H. Silberman; D. Isaac 1949-4-13 Butte 1/8 mi. N. Hooker Oak, Chico. 60 Comment
  CHSC42359  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC201749  Deschampsia elongata Lowell Ahart 1987-7-17 5822 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC11980  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville. 1500 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  JEPS110215  Deschampsia elongata Lowell Ahart 2006-7-16 12996 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
  SACT000938  Deschampsia elongata 1925-6-5 Butte No collector/determiner listed. Comment
  CHSC33467  Descurainia incana R. E. Preston 1981-7-14 109 Butte Ca. 7.5 km ese of Jonesville. In meadow. 1950 Comment
  CAS-BOT-BC388455  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  JEPS115600  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  UC1362274  Dicentra formosa James Guthrie 1964-4-28 Butte ca 1.5 mi n Magalia (on Skyway) Comment
  CAS-BOT-BC402393  Dicentra formosa subsp. formosa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CAS-BOT-BC402381  Dicentra formosa subsp. formosa Lowell Ahart 1983-9-21 4465 Butte Near French Creek, about 2 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC209181  Dichanthelium acuminatum subsp. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi. e of Lake Madrone 997 Comment
  CAS-BOT-BC500055  Dichelostemma capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC3558  Dichelostemma capitatum subsp. capitatum Gary Dutton 1966-2-14 12 Butte Found in upper Bidwell Park across from golf course. Comment
  CHSC3815  Dichelostemma multiflorum L. E. Dunkel 1965-4-15 21 Butte Ca. 200 yards sw of Chico Rod and Gun Club building and ca. 600 yards nw of Municipal Golf Course building, Chico. 33 Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  CHSC107244  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte Shade of trees, just north of the small wash, on the weest side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  SD120609  Dichondra donelliana Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 331 2a Butte North Honcut Creek, Ahart Ranch, ca. 2.5 miles northest of Honcut between Marysville and Oroville. 49 Comment
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CHSC69735  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Lawn, at the Butte County Historical Society Museum, Oroville. 60 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CAS-BOT-BC209041  Digitaria sanguinalis Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10560063  Digitaria sanguinalis A. Arthur Heller 1914-6-2 Heller 11476 Butte Hills 8 miles north of Oroville. Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC87411  Diplacus douglasii R. D. Fischer 2004-2-28 118 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). South trail leading into canyon. 548 Comment
  CHSC47501  Diplacus kelloggii Lowell Ahart 1974-4-15 417 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC45269  Dipsacus fullonum Vernon Oswald 1987-7-21 3142 Butte Between the Midway and the Southern Pacific RR, 0.6 mi s of Nelson. 36 Comment
  CHSC106282  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley. Oroville; in gravel parking area at east sie of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC113969  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  CHSC31856  Dodecatheon clevelandii subsp. patulum L. Ahart 1974-2-15 302 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC52456  Dodecatheon clevelandii subsp. patulum M. P. Howe 1984-4-1 4 Butte Doe Mill Summit. 579 Comment
  CHSC31413  Dodecatheon hendersonii Herb Allan McLane 1980-3-3 1 Butte Plumas National Forest, MDM, 1 mi sw of Ponderosa Dam. 402 Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC72400  Dopatrium junceum Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  UCD123715  Dopatrium junceum John M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station. Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  CHSC10787  Downingia ornatissima var. eximia Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46481  Draba verna var. aestivalis Lowell Ahart 1975-3-4 702 Butte Along the west side of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC35018  Draba verna var. verna R. E. Preston 1982-3-20 195 Butte Ca. 50 ft n of Humboldt Rd, ca. 3.3 mi e of downtown Chico. 106 Comment
  CHSC48460  Draperia systyla Vernon Oswald 1983-7-19 876 Butte Skyway, 1.3 mi s of Inskip. Growing on a dry forest floor in yellow pine forest. 1432 Comment
  CHSC33962  Drosera rotundifolia M. S. Taylor; Lowell Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, c ... Field redacted by CHSC, contact the data manager for more information 1828 Comment
  CHSC36294  Drosera rotundifolia M. S. Taylor 1982-8-16 5004 Butte N side of spur road off 52513, 1 mi s of Jones Mea ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  CHSC41318  Drosera rotundifolia S. C. Morey 1983-7-23 595 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. ... Field redacted by CHSC, contact the data manager for more information 1414 Comment
  CHSC41360  Drosera rotundifolia R. A. Schlising 1980-7-14 3890 Butte 1.1 mile S of Inskip along the Skyway. ... Field redacted by CHSC, contact the data manager for more information Comment
  SEINET10448023  Drosera rotundifolia Mary Susan Taylor 1982-8-16 Taylor 5004 Butte T25N R5E ne/sw sec 31. Pulga NW quad. N side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City. Seep area; 5900 ft. 1798 Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  CHSC42107  Dysphania ambrosioides Lowell Ahart 1986-11-9 5460 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC31697  Echinochloa crus-galli L. Ahart 1974-11-9 673 Butte In rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76020  Echinochloa crus-galli Lowell Ahart; Vernon H. Oswald 1999-8-13 8149 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
  UCD61094  Echinochloa muricata P. B. Kennedy 1921-8-9 Butte Rice Station, Biggs. Comment
  UCD61067  Echinochloa muricata var. microstachya P. B. Kennedy 9-10 Aug 1921 Butte Experiment Station, Biggs. Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC108133  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC115263  Elatine Lowell Ahart 2015-5-17 20192 Butte About 30 yards north of the Lower Honcut Road, about 1 3/4 miles west of Honcut. 28 Comment
  JEPS122196  Elatine Lowell Ahart 2014-4-25 19398 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  JEPS123906  Elatine Lowell Ahart 2015-4-24 20069 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS123909  Elatine Lowell Ahart 2015-4-24 20073 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 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
  CHSC114970  Elatine californica Lowell Ahart 2015-3-31 19984 Butte Bottom of a large duck field, about 200 yards north of Parking Lot 12, on the north side of the dirst road, about 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS124216  Elatine californica Lowell Ahart 2015-3-26 19965 Butte About 1/8 mile south Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  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
  SEINET10447963  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 4596 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
  CHSC68422  Eleocharis acicularis L. P. Janeway; R. A. Schlising 1988-7-1 2921 Butte Edges of Summit Lake, on the northwest flank of Snow Mountain. 1889 Comment
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC45129  Eleocharis bella Vernon Oswald 1987-8-10 3203 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CAS-BOT-BC113584  Eleocharis decumbens L. P. Janeway 1987-6-13 2217 Butte Meadow just NE of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  SEINET10905703  Eleocharis macrostachya Mary Susan Taylor 1980-5-31 Taylor 2774 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET13711130  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8702 Butte E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. 57 Comment
  SEINET9084814  Eleocharis pachycarpa L. Ahart 2000-7-18 8597 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road, ca 4 air miles SW of Oroville. 40 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 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 S side of Tract 3.1, Sanctuary II. 32 Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC46880  Eleocharis suksdorfiana Vernon Oswald 1989-8-29 3971 Butte Boy Scout Camp at Chico Meadows, ca. 1 mi n of Butte Meadows. Bogs on the sloping meadow bordering Big Chico Creek near the impounded 'swimming hole. 1280 Comment
  CHSC117590  Elymus caput-medusae L. P. Janeway 2016-6-2 12105 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC44178  Elymus elymoides subsp. californicus V. Oswald; L. Ahart 1988-7-29 3640 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. On top of ridge. 2103 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CAS-BOT-BC203427  Elymus glaucus subsp. glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  SD34470  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico Comment
  UCD62438  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  CHSC74161  Elytrigia intermedia subsp. intermedia B. Castro 1996-8-7 706 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC96239  Enemion occidentale R. Fischer 2006-3-17 989 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 231 Comment
  CHSC40590  Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte Near the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC111152  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC30706  Epilobium campestre M. S. Taylor 1980-7-6 3054 Butte In vernal pool, ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca 8 mi n of Chico. 67 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC66164  Epilobium campestre Vernon H. Oswald; Lowell Ahart 1996-5-27 7653 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 bed of a marsh on the S end of Tract 2, Sanctuary II. 33 Comment
  CAS-BOT-BC166845  Epilobium canum subsp. latifolium Lowell Ahart 1980-9-10 2627 Butte 1 mile north-east of Milsap Bar 900 Comment
  CHSC13471  Epilobium canum subsp. latifolium J. R. Birmingham 1972-4-5 7 Butte Against cliff, ca. 1000 yds. se of Municipal Golf Building, Chico. 182 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  POM214001  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville. 1500 Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  SEINET3449320  Epilobium densiflorum Unknown 2003-6-30 10330 Butte Forbestown, Forbestown, about 2 air miles northwest, north side of Ponderosa Way, about 1.5 road miles southwest of the Ponderosa Dam 400 Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  UC1601414  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near springs); Lassen National Forest, Vicinity of Jonesville Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  CHSC64200  Epilobium oregonense S. C. Morey 1983-7-25 627 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC46643  Epilobium torreyi Lowell Ahart 1989-7-4 6362 Butte 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
  CHSC38887  Epipactis gigantea Vernon Oswald 1983-6-2 605 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CHSC6589  Epipactis gigantea R. Carter 1966-6-26 459 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  JEPS115378  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG128078  Epipactis gigantea L. Ahart 2009-6-3 15833 Butte E side of Big Chico Crk, SW of the meadow, ca. 30 yards W of Ten Mi House Rd, Upper Bidwell Park, ca. 3/4 mi W of Hwy 32 209 Comment
  CHSC63794  Equisetum arvense S. C. Morey 1983-8-1 664 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC57997  Equisetum arvense Saichi Kawahara 1968-5-4 360 Butte Colusa-Hamilton City Road, 1 mi. n. of Princeton Ferry, w. bank of Sacramento River. 30 Comment
  SEINET3070848 Image available Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville 1300 Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  CHSC42507  Equisetum laevigatum Lowell Ahart 1987-5-27 5713 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  CAS-BOT-BC57256  Equisetum laevigatum Lowell Ahart 1968-5-5 s.n. Butte Peter Ahart Ranch, Honcut, Bank of North of Honcut Creek 150 Comment
  SEINET4568214  Eragrostis chloromelas R. McKee 1907-8-18 13903 Butte Chico Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  CHSC42375  Eragrostis pectinacea var. pectinacea Lowell Ahart 1987-5-27 5697 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
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  CHSC101490  Eremogone cliftonii Samantha Mackey Hillaire 2008-6-10 1253 Butte Lassen National Forest. Powerline survey, approx. 1.4 air miles east of Flea Mountain to southern end of occurrence. Accessed from roads 24N13, 24N13A, 23N14Y, 23N22Y. Found plants on ridges between 636057.190602654, 4414774.7153736 in the north to 633268,739075563, 4410021.81676031 in the south. Elevation 3200-4292 feet. 989 Comment
  CHSC30045  Eremogone cliftonii Joan P. Warner 1977-4-22 1 Butte Ca. 2 km sw of intersection of North Fork Feather River and Butte-Plumas county line, ca. 23 km nw of Paradise, ca. 80 m s of river. 490 Comment
Read comments
Jul 8 2014
  CHSC78797  Ericameria arborescens Vernon H. Oswald 2000-9-23 9971 Butte Lumpkin Rd 2.0 mi northwest of the Enterprise Bridge over Lake Oroville. 518 Comment
  CHSC94018  Ericameria bloomeri R. Fischer 2005-9-5 664 Butte Location about 3 road miles north of Jonesville adjacent to county road 27N43, ca. 1 mile south of Humboldt Peak. Plants growing at edge of road on an open, rocky ridge in an area of mixed pine and fir forest. 1828 Comment
  SEINET10473505  Erigeron Mary Susan Taylor 1981-5-21 Taylor 3788 Butte In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. 1600 Comment
  CAS-BOT-BC296822  Erigeron divergens Mrs. C. C. Bruce 1897-5-1 2115 Butte Butte Creek Comment
  CAS-BOT-BC296820  Erigeron divergens Lowell Ahart 1987-5-6 5499 Butte Along the North Fork of the Feather River, near Poe Power House about 2 miles southe-east of Jarbo Gap 271 Comment
  SD5419  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 Butte Above Jonesville 1800 Comment
  SEINET10474626  Erigeron inornatus var. viscidulus Mary Susan Taylor 1981-6-19 Taylor 3962 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  RSA4149  Erigeron lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville 2000 Comment
  SD5418  Erigeron lassenianus E. B. Copeland 1929-7-17 Butte Above Jonesville. 2000 Comment
  CHSC115281  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  SEINET5333742  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC263693  Eriogonum luteolum var. pedunculatum John Thomas Howell 1959-9-20 34695 Butte 9 mi. NE of Oroville on Feather River Highway, Sierra Nevada 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
  SEINET10904443  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1980-10-6 Taylor 3357 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CAS-BOT-BC269844  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  SEINET3860080  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Hwy 70 in Feather River Canyon at the turnoff to Pulga.; 0 Comment
  UCD163429  Eriogonum umbellatum var. ahartii Robert E. Preston 2015-7-17 3011 Butte Along Concow Rd, 1.8 mi NE of Concow Reservoir. 866 Comment
  SEINET11934484  Eriogonum umbellatum var. polyanthum L. Ahart, Ahart, P. 1985-1 5113 Butte about 8mi NE of Feather Falls.on lava, ca 140yds S of dirt rd, Lumpkin Ridge, ca 1.5 mi E of camp 18 975 Comment
  CAS-BOT-BC262205  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  CHSC45481  Eriogonum ursinum var. ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak. 2133 Comment
  JEPS106049  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC100919  Eriophyllum lanatum var. croceum R. A. Schlising; Arthur Dawson, Don Burk 1982-6-2 4280 Butte North of Oroville and north of Concow Reservoir. At roadside. Comment
  CHSC35696  Eriophyllum lanatum var. croceum J. D. Jokerst 1982-5-1 1547 B Butte N of Concow Resv. N. of Hoffman Rd, ca. 2.0 mi E of Concow Rd. Comment
  CAS-BOT-BC308155  Eriophyllum lanatum var. grandiflorum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC308170  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC308172  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Cohasset, Sierra foothills Comment
  JEPS115587  Eriophyllum lanatum var. grandiflorum Lowell Ahart 2009-5-23 15770 Butte On the north side of Ten Mile House Road, just southeast of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA727541  Eriophyllum lanatum var. grandiflorum 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
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC179658  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte near Butte Meadows; Little Summit Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  CHSC31392  Erodium botrys J. D. Jokerst 1979-4-20 1204 Butte Top of North Table Mt., ca. 200 met N of Cherokee Rd at the E edge of the Mountain. 403 Comment
  CHSC19933  Erodium brachycarpum M. S. Taylor 1975-2-16 374 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  HSC8490  Erodium cicutarium William J. Ferlatte 1963-5-11 41 Butte Chico State College campus Comment
  CAS-BOT-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  CHSC115453  Erysimum capitatum M. Sutton; K. Schierenbeck 2013-5-5 49 Butte Deer Creek. 657 Comment
  CHSC2930  Erysimum capitatum var. capitatum W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 411 Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC105163  Erythranthe bicolor Christopher T. Ivey 2007-5-22 369 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 Comment
  CHSC113519  Erythranthe breweri Lowell Ahart 2014-7-7 19599 Butte Depression in a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC42864  Erythranthe breweri Lowell Ahart 1987-5-12 5633 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC61503  Erythranthe floribunda Lowell Ahart 1993-5-10 6934 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  SEINET13976392 Image available Erythranthe grandis A. A. Heller 1938-1 15028 Butte Table Mountain 305 Comment
  CHSC9273  Erythranthe guttata D. C. Burns 1971-4-3 117 Butte Abundant on s side of highway 70, ca. 8.2 mi n of Oroville, (1.2 mi from end of Oroville freeway). 82 Comment
  SEINET8255133  Erythranthe guttata A. A. Heller 1917-7-26 12813 Butte Butte Meadows. 1280 Comment
  CAS-BOT-BC151460  Erythranthe latidens Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC151462  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC46685  Erythranthe lewisii V. Oswald; L. Ahart 1989-8-15 3945 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1780 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44766  Erythranthe primuloides R. Banchero 1980-6-26 274 Butte Banchero Meadows, 1.1 mi S of Inskip along the Skyway, 4.5 mi N of Stirling City. 1426 Comment
  CAS-BOT-BC133257  Erythronium M. S. Taylor 1980-3-8 2378 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville 487 Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CHSC32742  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-10 3526 Butte S side of Private rd, ca. 1/8 mi e of its jct with Ponderosa Way (Rim Rd), ca. 4 mi n of Jarbo Gap on Hwy 70, ca. 19 air mi n of Oroville. 914 Comment
  CAS-BOT-BC504523  Erythronium multiscapideum Elmer I. Applegate 1932-4-12 7041 Butte Wooded botton of the Sacramento River about 2 miles west of Cana, north-west of Butte County Comment
  CAS-BOT-BC402648  Eschscholzia caespitosa James Jokerst 1985-3-24 2169 Butte Near Serpentine Point 547 Comment
  CHSC51891  Eschscholzia caespitosa Martin Polsan 1988-3-1 18 Butte Chico Municipal Golf Course, ca 3 mi NE of Chico. 91 Comment
  CAS-BOT-BC402650  Eschscholzia caespitosa Mrs. C. C. Bruce 1897-4-1 2019 Butte Nelsons bar Comment
  CAS-BOT-BC402966  Eschscholzia californica Mrs. C. C. Bruce 1897-5-1 2022 Butte Fields near Chico Comment
  CAS-BOT-BC402967  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC10823  Eschscholzia californica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC21013  Eschscholzia californica M. S. Taylor 1975-10-4 962 Butte On s edge of Kunkle Reservoir, ca. 50 ft e of Pentz-Magalia Hwy, ca. 1mi s of Paradise. 609 Comment
  CAS-BOT-BC402974  Eschscholzia californica Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 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
  CHSC110031  Eucalyptus Lowell Ahart 2012-10-20 18484 Butte On the south side of the paved park road, about 50 yards east of the east side of the Deep Pen, east of the intersection of Chico Canyon Road (E8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  CHSC98570  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Ridge top row of these old trees. 235 Comment
  CHSC61627  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC25348  Euphorbia crenulata Marc P. Hayes 1977-4-22 18 Butte Ca. 2 km nw of Jarbo Gap, ca. 11 km w of Paradise. Forest, along Hwy 70, ca. 20 m n of Rd. 660 Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  SEINET10939887  Euphorbia ocellata Mary Susan Taylor 1975-10-3 Taylor 945 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  RSA0106562  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horeshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  JEPS108974  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC93936  Festuca californica L. P. Janeway 2006-5-28 8641 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CHSC98657  Festuca californica B. Castro; L. P. Janeway 2005-8-9 1525 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. On uphill edge of road, on NE-facing slope. 987 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC59046  Festuca subulata Lowell Ahart 1992-6-26 6784 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC54353  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte On a bank of a road, along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles south-west of Forbestown Reservoir. 609 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 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. 242 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  CHSC23538  Fragaria vesca M. S. Taylor 1976-2-16 1026 Butte On bank on s side of Butte Creek, ca. 500 yds w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC34215  Fragaria vesca M. S. Taylor 1981-4-28 3571 Butte N side of 23N28.2, at jct of Chico Creek, ca. 4 mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  UC398923  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC437083  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC62948  Frangula californica subsp. tomentella John Thomas Howell 1975-6-15 51073 Butte Butte Creek near Chico. 60 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CAS-BOT-BC55652  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise 640 Comment
  CHSC62580  Frangula rubra B. Castro 1993-7-7 471 Butte Ca 2.5 mi SSW of Big Bar Mtn, on gentle SE-facing slope on the N side of USFSRd 22N84, at uphill edges of serpentine outcrop among grasses. 960 Comment
  CHSC46397  Frangula rubra subsp. obtusissima Lowell Ahart 1989-5-29 6311 Butte On the east side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 822 Comment
  CHSC6632  Fraxinus M. MacArthur 1968-6-16 355 Butte Ca. 10 ft. from NW edge of Big Chico Creek just N of bridge by Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC223388  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC87790  Fraxinus dipetala Paul Maslin 2004-3-29 7 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609199E 4407964N. 274 Comment
  CHSC40036  Fritillaria affinis R. M. Austin 1896-2-1 Butte Near Chico. Comment
  CHSC4661  Fritillaria affinis R. Carter 1966-3-13 301 Butte Found ca. 6 mi. E of Chico at intersection of HoneyRun Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CAS-BOT-BC130321  Fritillaria eastwoodiae M. S. Taylor 1979-3-20 1947 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville 304 Comment
  CHSC4173  Fritillaria eastwoodiae D. B. Joley 1967-4-10 19 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CHSC89005  Fritillaria eastwoodiae L. Hanson 1985-4-26 267 Butte Plumas National Forest. On 21N80 Rd. east of Galen Ridge. 792 Comment
  CAS-BOT-BC508146  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  JEPS97588  Fritillaria recurva R. D. Stone and W. B. Davilla 1984-4-21 595 Butte ca. 0.6 mi ENE of De Sabla Powerhouse; Butte Creek drainage 701 Comment
  CHSC37264  Galium aparine L. Ahart 1982-6-15 3569 Butte Ca. 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  UCD121668  Galium aparine K. Esau; M. Phillips 1929-4-13 1919 Butte Chico. Comment
  CHSC47047  Galium bifolium R. A. Schlising; L. Janeway 1988-7-16 4605 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek. 1950 Comment
  CDA13247  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13094 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 mi. N of Magalia. Comment
  JEPS52655  Galium bolanderi Lauramay T. Dempster 1964-7-24 4045 Butte roadbank 3 mi s Nimshew 487 Comment
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  SEINET10836822  Galium bolanderi Mary Susan Taylor 1979-6-22 Taylor 2168 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC37262  Galium parisiense L. Ahart 1982-6-15 3582 Butte Ca. 1.5 mi E of camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  UC1523191  Galium trifidum M. S. Taylor and L. Ahart 1981-8-16 4196 Butte 3 mi s Philbrook Reservoir (ca 6 mi ne of Stirling City); Pulga NW Quadrangle, Jones Meadow 1828 Comment
  UC889085  Galium trifidum A. A. Heller 1917-7-28 12842 Butte Butte Meadows 1280 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
  CAS-BOT-BC303382  Gamochaeta ustulata Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1.5 miles SE of the E Fork of Canyon Creek, about 14.5 miles NE of Oroville 575 Comment
  CHSC23138  Garrya fremontii M. S. Taylor 1976-2-25 1005 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC77052  Garrya fremontii L. P. Janeway 2000-1-29 6629 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  UC579315  Gastridium ventricosum P. L. Johannsen 1935-5-27 677 Butte four mi se Chico; Chico Quad. 83 Comment
  CHSC109532  Gaultheria ovatifolia L. P. Janeway; Tom Carlberg, Linnea Hanson+ 2012-5-27 10825 Butte Northern High Sierra Nevada. Along the road to Sly Creek Reservoir dam, 0.9 road km west of the south end of the dam; overlooking the upper end of Lost Creek Reservoir from the south. 1035 Comment
  CHSC11779  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Along Butte Creek. 1650 Comment
  UC128808  Gayophytum heterozygum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC29403  Gayophytum humile R. A. Schlising; R. Banchero 1980-6-12 3717 Butte Chico Meadows, off Scout Road 1.1 mi N of Butte Meadows jct of Humboldt Road and Skyway/Humbug Road; dry margins of meadows and at streamsides. 1316 Comment
  CHSC31182  Gayophytum humile M. S. Taylor 1978-7-18 1716 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  UC1564782  Gayophytum humile V. Oswald and L. Ahart 1989-6-27 3818 Butte ridge e Scotts John Creek (ca 3.3 air mi e of Jonesville) 1981 Comment
  CHSC38492  Genista monspessulana Vernon Oswald 1983-5-2 407 Butte Upper Bidwell Park, Chico, between Chico Creek and the lawn of Hooker Oak Recreation Area. 80 Comment
  JEPS118597  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Oroville 7.5; quad. Comment
  POM193353  Gentianella amarella E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CHSC48451  Gentianella amarella subsp. acuta Vernon Oswald; Lowell Ahart 1987-8-5 3191 Butte Scotts John Creek 0.6 mi n of the road connecting Humboldt and Humbug roads. 1780 Comment
  UC177582  Gentianella amarella subsp. acuta H. M. Hall 1914-7-22 9770 Butte near Jonesville (meadows on Willow Creek); Willow Creek 1554 Comment
  CHSC43043  Gentianopsis simplex L. P. Janeway 1987-7-5 2447 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. Meadow. 1798 Comment
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  RSA0028179  Geranium carolinianum C. C. Bruce 1897-06 1931 Butte Little Chico. Comment
  SBBG17317  Geranium carolinianum M. Vincent 1962-4-15 171 Butte intersection of Bernum and Pentz Rds Comment
  CHSC36292  Geranium dissectum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4353 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  CHSC90248  Geranium molle Robert Kissane 1989-4-20 12 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  SEINET10870230  Geranium molle Mary Susan Taylor 1976-3-30 Taylor 1039 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  RSA754945  Geranium purpureum L. Ahart 2008-5-12 14762 Butte East side of Ponderosa Way, about 1 air mile southwest of the Ponderosa Dam, about 2.25 air miles northwest of Forbestown. 671 Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  RSA699525  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 0126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Patch located approx. midway along Humboldt Trail 427 Comment
  SEINET11268216  Gilia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam.; 0 1158 Comment
  SEINET12350112  Gilia tricolor subsp. tricolor Unknown 1998-4-11 7 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC266583  Githopsis pulchella A. A. Heller 1937-5-31 s.n. Butte Just W of Jarboe Pass on the Feather River Highway about 20 miles from Oroville 609 Comment
  CHSC78135  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC94051  Githopsis pulchella subsp. campestris R. D. Fischer 2005-5-18 725 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail, canyon facing. 426 Comment
  JEPS115036  Glinus lotoides Lowell Ahart 2007-10-31 14512 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  UC1563258  Glinus lotoides unknown 1990-10-5 6631 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  CHSC75353  Gnaphalium palustre Lowell Ahart 1999-6-12 8086 Butte High water line on the south side of the reservoir, 50 yards east of the dam, north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 297 Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  POM252679  Goodyera oblongifolia E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  CAS-BOT-BC305288  Grindelia hirsutula John Thomas Howell 1962-6-15 37427 Butte 4 miles from Paradise on road to Oroville 106 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  CHSC33139  Grindelia hirsutula var. davyi J. D. Jokerst 1980-5-28 803 Butte Top of North Table Mountain. Along sides of Cherokee Road on the west 1/2 of the mountain. Comment
  RSA770729  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg ) of Gridley 34 Comment
  JEPS98981  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  UC480671  Hackelia nervosa H. F. Copeland 1931-6-11 Butte woods above Butte Creek Meadows; Jonesville Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  RSA0080129  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  CHSC58887  Helenium puberulum Lowell Ahart 1992-7-23 6824 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  UC1609017  Helianthella californica subsp. nevadensis Lowell Ahart 1993-9-8 7171 Butte on top of ridge about 1 mi e Snow Mountain 2103 Comment
  UC600741  Helianthella californica subsp. nevadensis H. F. Copeland 1930-7-26 Butte Jonesville Jonesville (rocky peak above hotel) Comment
  CAS-BOT-BC314755  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  SD5555  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 Butte Jonesville 2150 Comment
  SEINET10938083  Helianthus annuus subsp. lenticularis Mary Susan Taylor 1975-6-30 Taylor 809 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  SEINET12331820  Heliotropium europaeum Unknown 1985-1 5042 Butte Cherry Street, between 9th and 8th Street, Chico 61 Comment
  UCD77751  Heliotropium europaeum Robert E. Preston 1996-4-30 933 Butte 4.5 mi n of Hamilton City, on e side of Sacramento River 44 Comment
  CHSC35660  Helminthotheca echioides R. E. Preston 1982-4-22 248 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC27212  Hemerocallis P. Moyer 1972-6-5 214 Butte S bank Chico Creek, between L. S. and Gus Magnolis Bridge, CSUC campus. 60 Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  SEINET10474720  Hemizonia parryi subsp. rudis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5146 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 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
  UCD73011  Hesperevax acaulis 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
  CHSC90476  Hesperevax acaulis var. robustior Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  CHSC27306  Hesperevax caulescens T. B. Devine 1977-5-22 403 Butte Wurlitzer Ranch (west) Vina Prairie, field, next to Haile Road ca 1 mi sw of Hwy 99. 57 Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CHSC116746  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  UCR51809  Heterocodon rariflorum H. F. Copeland 1927-9-4 0945 Butte Jonesville 1524 Comment
  CHSC23693  Heterotheca grandiflora M. S. Taylor 1976-5-5 1106 Butte On w side of Pentz-Magalia Rd, ca. 50 ft s of junc of Pentz-Magalia Rd and Pentz Rd, ca. 15 mi s of Chico. 121 Comment
  CAS-BOT-BC310279  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC311010  Heterotheca oregona John Thomas Howell 1959-9-26 35087 Butte Cuesta Power House, North Fork of Feather River 426 Comment
  CHSC34709  Heterotheca oregona var. compacta M. S. Taylor 1980-9-26 3340 Butte In Lindo Channel, jct of Mangrove and Cohasset, in Chico. 45 Comment
  CHSC101754  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 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
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UC114811  Heuchera micrantha var. erubescens Mrs. R. M. Austin Mar 1896 673 Butte Little Chico Canyon Comment
  CHSC23417  Hibiscus lasiocarpos var. occidentalis K. Stern 1970-8-1 Butte S. end of Eddy Lake. Rancho Llano Seco. Comment
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC42703  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  NY11964  Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road; Sierra Nevada Mountains 1066.8 Comment
  CHSC34029  Hoita orbicularis L. Ahart 1981-7-7 2922 Butte In a small springy area ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC4383  Holcus lanatus M. M. Gregg 1966-5-25 178 Butte S of Chico on Park Ave to intersection of 99E. Creek bed approx 50-80 ft. from intersection. Chico. Comment
  CHSC43732  Holodiscus microphyllus var. glabrescens Vernon Oswald 1983-8-17 984 Butte Humboldt Peak, n-e of Jonesville. 2158 Comment
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC6728  Hordeum arizonicum B. Anthony 1968-4-21 464 Butte Horshoe Lake, Bidwell Park, Chico. Comment
  CHSC6751  Hordeum marinum subsp. gussoneanum Marilyn Lee 1968-5-3 159 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CDA34626  Hordeum murinum subsp. leporinum L. Ahart 2009-4-17 15562 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC6745  Hordeum murinum subsp. leporinum Marilyn Lee 1968-4-15 178 Butte 1076 E. First Ave., Chico. Almond orchard. Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CHSC111977  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte Along a small stream, west of a poor dirt road, about 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the Wesst Branch Bridge across Lake Oroville. 286 Comment
  CHSC40328  Horkelia tridentata Lowell Ahart 1985-5-15 5001 Butte East of a small dry stream, 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 731 Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET3082827 Image available Hypericum anagalloides Marc Mittleman 1980-8-1 224 Butte Chico (little) Creek, adjacent to China Garden Springs 262 Comment
  SFV2318  Hypericum anagalloides M. L. Vincent 1960-7-16 116 Butte Sierra Nevada 4 miles south of Paradise at small reservoir off Pentz Road. 450 Comment
  CHSC104748  Hypericum concinnum L. P. Janeway 2010-6-19 10023 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC65564  Hypericum concinnum L. P. Janeway 1995-6-26 4820 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, just above Road 21N25A. South-facing slope. 1127 Comment
  SEINET10472176  Hypericum concinnum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4059 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  RSA4175  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville. 1550 Comment
  CHSC742  Hypericum perforatum R. Carter 1964-6-10 112 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. 10 yds. behind house. 121 Comment
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  RSA712968  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada: East end of Watson Ridge; along Road 21N25 about 0.5 miles north of Fall River and about 1.7 miles west of Kenebeck Ridge 1159 Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  SEINET10971618  Iris macrosiphon Lowell Ahart 1985-3-22 Ahart 4848 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  JEPS94717  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  SEINET10839545  Isoetes howellii Lowell Ahart 1983-6-6 Ahart 4031 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  SEINET10470698  Isoetes nuttallii Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4046 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC39527  Isolepis setacea Lowell Ahart 1983-6-12 4047 Butte In a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC45120  Isolepis setacea V. Oswald; L. Ahart 1988-6-17 3405 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1066 Comment
  CHSC45588  Isolepis setacea M. S. Taylor 1981-5-6 3622 Butte W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. 1127 Comment
  CHSC5934  Juglans californica var. hindsii M. MacArthur 1968-6-17 166 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  CHSC94561  Juncus acuminatus Lowell Ahart 2006-9-13 13326 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC78326  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte On the sides of a dirt road, about100 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) mortheast of Feather Falls. 1219 Comment
  POM111223  Juncus bufonius C. C. Bruce 1897-1 s.n. Butte Near Chico. Comment
  CHSC31925  Juncus bufonius var. bufonius J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 840 Butte 0.1 mi W of junction of Skyway and Humboldt Rd., N of and adjacent to the latter. Comment
  CHSC82417  Juncus bufonius var. bufonius Lowell Ahart 2002-5-7 9633 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS122278  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  JEPS127240  Juncus bufonius var. bufonius Lowell Ahart 2016-5-24 20869 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 Comment
  CHSC46425  Juncus capitatus Lowell Ahart 1989-5-28 6282 Butte In a mined over area 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
  CHSC55455  Juncus capitatus L. P. Janeway 1991-4-21 3914 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  SEINET10472432  Juncus capitatus Lowell Ahart 1985-5-10 Ahart 4957 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC49610  Juncus dubius Vernon Oswald 1987-6-23 3015 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a wet ditch beside the road. 1920 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  SEINET10472476  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-19 Taylor 1749 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC47554  Juncus howellii Lowell Ahart 1981-8-15 3047 Butte On the south side of the dirt road, about 1 mile east of Coon Hollow Road, southeast of Snag Lake, about 10 miles north of Inskip. 1524 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  CAS-BOT-BC110103  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC106860  Juncus leiospermus var. ahartii Lowell Ahart 2011-5-2 17351 Butte Open pasture field, 226 feet north of west tower leg, between the middle and west wire, Peter Ahart Ranch, about 1 mile north and 1 5/8 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CAS-BOT-BC110135  Juncus leiospermus var. leiospermus Lowell Ahart 1984-5-7 4589 Butte Near Kunkle Res., south of Paradise. 600 Comment
  JEPS110150  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 405 Comment
  CHSC84449  Juncus occidentalis Lowell Ahart 2003-8-6 10473 Butte Along seeps, on the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 988 Comment
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  CHSC113516  Juncus oxymeris Lowell Ahart 2014-7-7 19595 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC97148  Juncus oxymeris Lowell Ahart 2007-7-7 14264 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC54194  Juncus patens Vernon H. Oswald; Lowell Ahart 1991-5-31 4638 Butte Dan Beebe Trail, Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool and on the north side of Oroville Dam Blvd East, between the 4 and 5 mile posts (ca. 4.5 miles). Along a drainage crossing the trail. 85 Comment
  CHSC99817  Juncus tenuis Lowell Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10472342  Juncus tenuis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4734 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC30358  Juncus triformis James D. Jokerst 1980-6-14 830 Butte Big Bald Rock, N of Lake Oroville, E of town of Berry Creek. Comment
  CAS-BOT-BC279912  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands (n SNH) 830 Comment
  JEPS113765  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CHSC37066  Juncus xiphioides L. Ahart 1982-9-29 3838 Butte Along banks and edges of small stream, along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC69053  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte 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. 1432 Comment
  JEPS94327  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte about 6 air mi ne of Stirling City (about 1 1/2 mi se of Bald Mountain, sw of Keyser Creek, on s side of the County Road); s side of the County Road 1432 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC103677  Koeleria phleoides Lowell Ahart 2010-4-30 16585 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC77164  Kumlienia hystricula Vernon H. Oswald 2000-3-4 9884 Butte Hwy. 70 in Feather River Canyon 0.5 mi south of Cresta Rest Area. Along this section of highway. 464 Comment
  JEPS115721  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC38366  Lactuca serriola Vernon Oswald 1983-6-27 773 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  RSA754844  Lactuca serriola L. Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 mile east of Honcut, about 12 air miles south of Oroville. 32 Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  UCD133533  Lactuca serriola L. Ahart 1983-9-19 4457 Butte around 1/8 mile south of the Graylodge Wildlife Refuge headquarters, around 12 mile southwest of Gridley. 35 Comment
  CHSC36837  Lagophylla glandulosa M. S. Taylor 1982-6-24 4748 Butte E side of Ponderosa Way, 1.6 mi n of Jarbo Gap on Hwy 70. 868 Comment
  RSA32933  Lamium amplexicaule A. A. Heller 1920-4-10 s.n. Butte Butte County: Chico Comment
  SEINET10473883  Lasthenia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4869 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  CHSC8123  Lasthenia fremontii J. G. Moore 1969-3-25 68 Butte Upper Bidwell Park, 200 yds. w of rifle range, 100 yds. n of golf course. Chico. 76 Comment
  CHSC7097  Lasthenia platycarpha R. Lewis 1969-4-15 6 Butte 200 yds, w of Cohasset rd. 3 mi. past airport from Chico. 76 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 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
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  CHSC82404  Lathyrus angulatus Lowell Ahart 2002-5-7 9621 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC116512  Lathyrus jepsonii var. californicus B. Castro; Josh Brown, Melinda Carlson 2008-4-25 1732 Butte Sacramento Valley. E bank of Sacramento River, ca 0.2 mi N (upstream) of Gianelli Bridge at Hamilton City, just up from water's edge. 39 Comment
  CHSC38494  Lathyrus jepsonii var. californicus Vernon Oswald 1983-4-20 348 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). 91 Comment
  CHSC23679  Lathyrus nevadensis M. S. Taylor 1976-4-27 1091 Butte On n side of Villas Rd, ca. 1/2 mi e of junc of Villas Rd and Cohasset Hwy, Cohasset. 762 Comment
  RSA517347  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart 1986-4-13 5887 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CDA4996  Lavatera cretica L. Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 /14 miles (air) northwest of Honcut, about 1 mile south of Oroville. Comment
  CAS-BOT-BC321762  Layia fremontii E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC3539  Layia fremontii John Francis 1966-3-21 82 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E. (on Pentz Rd.). Comment
  CHSC35631  Layia fremontii R. E. Preston 1982-3-27 212 Butte SE corner of int Larkin Rd and Oro Dam Blvd, Oroville. 51 Comment
  CAS-BOT-BC321759  Layia fremontii Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 3 Butte At intersections of Hwys 149 & 99 just N of Oroville, 50' E of offramp 54 Comment
  CAS-BOT-BC321760  Layia fremontii Ira L. Wiggins 1925-3-25 1406 Butte 3.5 mi. E of Durham on States Land Colony Highway. Comment
  SEINET10474772  Layia fremontii Mary Susan Taylor 1973-1 Taylor 1 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CAS-BOT-BC380894  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  JEPS116084  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC103707  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-1 16755 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC46120  Lepidium didymum L. P. Janeway; B. Castro 1989-4-19 3225 Butte Campus of CSU, Chico; in city of Chico. Between Laxson Auditorium and Chico Cr. In lawn. 60 Comment
  CHSC30371  Lepidium nitidum J. D. Jokerst 1979-3-5 1135 Butte Top of North Table Mt., 300 m NW of the jct. of Cherokee Rd and E edge of the section. Comment
  SEINET10448587  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 58 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  RSA767799  Lepidium nitidum var. nitidum L. Ahart 2010-3-14 16571 Butte About 50 yards north of the wash, Peter Ahart Ranch, about 1.5 miles north and 1.25 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10907332  Lepidium perfoliatum Lowell Ahart 1985-4-1 Ahart 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC35756  Lepidium pinnatifidum R. E. Preston 1982-6-9 298 Butte At the edges of a dirt road; ca. 1/2 mi nw of HQ, Gray Lodge State Wildlife Area, ca. 8 mi sw of Gridley. 20 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC92505  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 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
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CAS-BOT-BC226524  Leptosiphon acicularis Lowell Ahart 1971-4-21 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
Read comments
Jul 19 2018
  HSC23389  Leptosiphon bicolor J. D. Sagray 1970-4-20 10 Butte 4 mi. N of Chico on S side of upper Bidwell Park Rd., 100 yds. from end of rd. 175 Comment
  CHSC69682  Leptosiphon bolanderi Vernon Oswald 1986-4-29 1990 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Jarbo Gap and Hwy 70. 853 Comment
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CHSC28754  Leptosiphon filipes J. D. Jokerst 1978-5-21 129 Butte 200 yds. W. of Hwy. 32, 7.7 mi. E. of Chico, top of ridge. 365 Comment
  CAS-BOT-BC123154  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CAS-BOT-BC341794  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  JEPS20646  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CHSC34143  Lessingia virgata L. Ahart 1981-9-27 3211 Butte Field near or ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  SBBG32474  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  UC1287454  Lessingia virgata Willard Spence 1962-7-24 731 Butte along alternate Rt. 40 4 mi s Oroville Comment
  POM196087  Leucophysalis nana H. F. Copeland 1929-6-9 1228 Butte Jonesville. 1524 Comment
  UCR7826  Leucothoe davisiae Wm. Horn Jr. 1964-7-1 640701- 01 Butte 9 miles east of De Sabla 1159 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
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 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
  UC175517  Ligusticum californicum A. A. Heller 1913-6-7 10795 Butte near Stirling 1074 Comment
  JEPS117406  Lilaea scilloides Lowell Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  SEINET10469676  Lilium Mary Susan Taylor 1980-4-18 Taylor 2499 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  POM109709  Lilium humboldtii subsp. humboldtii C. C. Bruce 1897-06 s.n. Butte [no locality information provided] Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CAS-BOT-BC133053  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC133049  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC23668  Limnanthes alba M. S. Taylor 1976-4-27 1094 Butte On n side of Ponderosa Way, ca. 6 mi e of junc of Ponderosa Way and Cohasset Hwy, ca. 23 mi ne of Chico. On road embankment. 609 Comment
  CHSC88572  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte 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
  CDA35341  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 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. 0 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
  CHSC42483  Limnanthes alba subsp. versicolor Lowell Ahart 1987-5-12 5632 a Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET12183347  Limnanthes douglasii Unknown 1984-1 43 Butte ca 10 yds N of Skyway and 4 mi E of Chico 122 Comment
  JEPS110435  Limnanthes douglasii subsp. nivea Lowell Ahart 2006-4-28 12542 Butte Along a small stream, south part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 320 Comment
  HSC87204  Limnanthes douglasii subsp. rosea R. J. Radzavage 1979-4-17 15 Butte Jct. Hwy. 99E and Boyles Rd., ca. 11 mi. N of Chico 61 Comment
  UCD116436  Limnanthes floccosa Jeff Dole 1988-3-26 s.n. Butte near junction of Bruce Road and Stilson Canyon Road. Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville Comment
  CHSC28973  Limnanthes floccosa subsp. californica Don Kroessing 1979-4-15 1 Butte In vernal pool in pasture on N side of Humboldt Rd, 0.2 mi E of its intersection with El Monte Ave, E of town of Chico. 76 Comment
  CHSC67543  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-16 3048 Butte Type Locality: W and adjacent to Hwy 99, S and adjacent to Gold Run Creek. 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
  UC1748336  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte ca. 100 m SE of Keefer Road Comment
  CHSC113244  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10837197  Linanthus filipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4257 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET12318323  Linanthus filipes E. D. Osman 1978-1 20 Butte ca 7.8 mi N of Chico and 200 E of Cohasset Hwy 76 Comment
  JEPS117409  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  RSA713020  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte Flat area on the S side of Dark Canyon Creek, 50 yards S of the train tunnels, W of Dark canyon Road. 2.5 miles air S of Hwy 70 at Big Bend Road. 294 Comment
  CHSC109777  Lindernia dubia var. anagallidea Lowell Ahart 2012-10-20 18512 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC43218  Linnaea borealis var. longiflora L. P. Janeway 1987-6-19 2225 Butte Along Sly Cr near road crossing, 2.1 mi from the Challenge-LaPorte Rd towards the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC11793  Linum lewisii var. lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC76427  Lipocarpha aristulata Lowell Ahart 1999-10-28 8300 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA0106687  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 Butte Below high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS108775  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 Comment
  CAS-BOT-BC36172  Lithocarpus densiflorus var. densiflorus John R. Reeder; Charlotte G. Reeder 1972-6-6 5656 Butte ca. 4 miles N of Forest Ranch 1066 Comment
  CDA14774  Lithocarpus densiflorus var. densiflorus G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3377 Butte 1.1 miles northeast of Mountain House. 1051 Comment
  CHSC31214  Lithophragma bolanderi M. S. Taylor 1980-4-16 2497 Butte Lake Oroville State Recreation Area, ca. 1.4 mi s of Parish Camp, ca. 1 mi n of Hwy 70 bridge over Feather River, ca. 5 mi s of Paradise. 304 Comment
  CAS-BOT-BC430887  Lithophragma bolanderi C. F. Baker 1903-4-11 3041 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. 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
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC116726  Logfia gallica Lowell Ahart 2016-5-25 20880 Butte On the north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC342381  Logfia gallica Lowell Ahart 1989-5-10 6226 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 280 Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  POM132576  Lomatium dasycarpum subsp. tomentosum A. A. Heller, H. E. Brown 1902-5-14 5552 Butte Berry Canyon (near Clear Creek) Comment
  CHSC32755  Lomatium marginatum J. D. Jokerst; R. A. Schlising 1981-4-16 1297 Butte S side of Olive Highway, 0.3 mi SW of it's junction with Forbestown Rd (ca. 6.0 mi E of Oroville). Comment
  CHSC116692  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  CHSC42623  Lomatium marginatum var. marginatum Vernon Oswald 1985-6-15 1835 Butte Black Bart Rd. ca. 1 mi se of Lampkin Rd. 640 Comment
  CHSC29999  Lomatium utriculatum L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38741  Lomatium utriculatum Vernon Oswald 1983-4-14 488 Butte Upper Bidwell Park, Chico, on the north rim ca. 3000 ft e of the power lines. 316 Comment
  CHSC96803  Lomatium utriculatum Lowell Ahart 2007-4-30 13712 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  JEPS48084  Lomatium utriculatum P. C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte at w. side Pulga Bridge (N. Fork Feather R.); , Pulga Bridge Comment
  UCD80006  Lomatium utriculatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 c Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  SEINET10906779  Lomatium utriculatum Mary Susan Taylor 1982-5-2 Taylor 4392 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  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
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  JEPS115657  Lonicera interrupta Lowell Ahart 2009-5-30 15807 -A Butte North of a small drainage, on the east side of Guardians Trail, about 50 yards northeast 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 411 Comment
  UC1125259  Lonicera interrupta C. G. Albertus 1933-6-6 18 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  SEINET10484212  Lotus Mary Susan Taylor 1981-5-5 Taylor 3602 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
  UC1609078  Lotus oblongifolius Lowell Ahart 1993-6-26 7009 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  RSA0118716  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 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
  CHSC109778  Ludwigia palustris Lowell Ahart 2012-10-20 18510 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 51/2 mi (air) W of Oroville 36 Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  SEINET10448485  Lunaria annua Mary Susan Taylor 1983-3-13 Taylor 5243 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  JEPS100189  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Edge of road 292 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
  CHSC87773  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 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
  SD120620  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca. 5 airmiles north of Oroville, flat-topped basalt butte near parking area, grassy area on dry shallow soil 395 Comment
  SEINET10970223  Lupinus bicolor subsp. tridentatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4123 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
  CHSC90921  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 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
  CHSC39492  Lupinus formosus Lowell Ahart 1983-6-21 4076 Butte Growing along Bloomer Hill Rd, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC36838  Lupinus latifolius var. columbianus M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC87799  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC90013  Lupinus microcarpus Peggy Fain 1991-4-21 25 Butte Along Richardson Springs Road, ca. 1 km. from Cohasset Highway. 152 Comment
  CHSC23667  Lupinus microcarpus var. densiflorus M. S. Taylor 1976-4-27 1097 Butte On n side of Ponderosa Way, ca. 4 mi e of junct of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  SEINET12765224  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville.; 0 76 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  CHSC942  Lupinus nanus var. vallicola M. Roberson 1956-5-2 Butte S.W. of Paradise, along Skyway. 426 Comment
  RSA754855  Lupinus nanus var. vallicola L. Ahart 2009-4-26 15618 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC83987  Lupinus pachylobus Lowell Ahart 2003-4-8 10043 Butte About 40 yards and in the small canyon west of the tall Digger Pine on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  JEPS115377  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 209 Comment
  RSA715922  Lupinus pachylobus L. P. Janeway 2005-3-10 8347 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  JEPS23890  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  SD2404  Lupinus superbus var. elongatus E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  SEINET10452163  Lupinus vallicola Mary Susan Taylor 1981-5-14 Taylor 3717 Butte T22N R6E se sec 17, Pulga SE quad. N side of 23N00.2, 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. Decomposed granite, in partial shade. 3200 ft. 975 Comment
  RSA712826  Luzula comosa L. Ahart 2006-4-28 12547 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  CDA18383  Lychnis coronaria G. D. Barbe 1978-7-14 2403 Butte Sierra Nevada; W of Main St. in Stirling City. Comment
  CHSC35002  Lychnis coronaria R. A. Schlising; J. D. Jokerst 1980-7-2 3817 Butte E of Forest Ranch, 0.2 miles SW of crossing of Butte Creek. Roadside. 640 Comment
  CHSC36096  Lycium barbarum Robert A. Schlising; Coleta Lawler 1981-11-28 4223 Butte Richvale Vernal Pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay; on hilltop at site of old orchard. Comment
  CHSC43685  Lycopus americanus Vernon Oswald 1985-6-26 1864 Butte Oroville Wildlife Area on the e side of the outlet of Thermolito Afterbay. 42 Comment
  CHSC52223  Lycopus americanus L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3093 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  UCD124961  Lycopus asper E. M. Johnston 1915-1 W 136 J Butte Biggs. Comment
  JEPS120718  Lythrum portula Lowell Ahart 2013-10-16 19112 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CDA5123  Lythrum salicaria L. L. Heinrichs 1965-7-5 Butte Pacific Heights Road & State Highway 70 (old Highway 40 Alt.) to Marysville, 2.5 miles south of Oroville. 0 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  JEPS104642  Madia elegans Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, ca 2 1/2 miles north and 2 2/3 miles east of Honcut, ca 12 miles (air) southeast of Oroville. 60 Comment
  UC65347  Madia elegans A. A. Heller 1902-5-10 5518 Butte Clear Creek P.O. Clear Creek 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
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  CAS-BOT-BC344307  Madia exigua Peter H. Raven 1953-5-9 5442 Butte 7.2 miles from Bangor on road to Oroville Comment
  CHSC43621  Madia exigua Vernon Oswald 1984-5-23 1200 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  SFV11421  Madia exigua M. L. Vincent 1963-6-10 419 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CAS-BOT-BC345232  Madia subspicata Lowell Ahart 1978-10-29 s.n. Butte Sutter Buttes Area. About 4 miles northeast of Bangor along La Porte Road 50 Comment
  CHSC108791  Magnolia Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC46218  Maianthemum racemosum Pauleen Broyles 1986-8-5 993 Butte Ca 0.3 mi n of road jct below Humboldt Peak, extreme n of county. Near Scotts John Creek. Comment
  RSA700214  Malacothrix floccifera L. Ahart 2004-6-22 11113 Butte On the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CDA31968  Marrubium vulgare L. Ahart 2009-6-12 15845 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  SBBG119822  Marsilea vestita L. Ahart 2002-5-15 9659 Butte Gray Lodge State Wildlife Management Area, ca. 100 yds E of Parking Lot 10, ca. 4 air mi SW of Gridley 22 Comment
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-BC348088  Matricaria discoidea Lowell Ahart 1987-5-6 5504 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC3518  Medicago arabica John Francis 1966-4-16 110 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  SEINET8721630 Image available Medicago ciliaris Roland McKee 1908-1 7742 Butte Chico Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  CHSC101812  Medicago lupulina Lowell Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC82431  Medicago polymorpha Lowell Ahart 2002-5-7 9622 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS94656  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 0.1 mi n Thermalito Diversion Dam (w of dirt road, e of the Thermalito Diversion Pool, 1/4 mi ne of Oroville) 67 Comment
  CDA13253  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC8226  Melica californica D. McClain 1969-5-1 67 Butte 15 yds. s. of Cohasset Rd., 3.2 mi e. of Cohasset. 457 Comment
  CHSC49558  Melica fugax Vernon Oswald; Lowell Ahart 1987-5-14 2399 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. In forest on the w side of the creek. 1780 Comment
  CHSC101462  Melica harfordii L. P. Janeway; Sarah Starkey 2009-7-13 9857 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CHSC87952  Melica harfordii Lowell Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  RSA718332  Melica harfordii L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  CHSC96427  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side of 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
  CHSC33678  Melilotus indicus L. Ahart 1981-5-16 2797 Butte Along the edge of dirt rd on Gray-Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 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
  SEINET10498168  Mentha X piperita Mary Susan Taylor 1975-10-3 Taylor 923 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC26619  Mentha canadensis M. P. Hayes 1977-9-24 116 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CHSC66441  Mentha pulegium Vernon Oswald; Lowell Ahart 1996-6-10 7756 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 7.2, Sactuary I. 33 Comment
  JEPS113501  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC21248  Mentha spicata M. S. Taylor 1975-10-31 981 Butte Along creek, ca. 50 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC50109  Menyanthes trifoliata Vernon Oswald 1990-5-9 4194 Butte Boy Scout Camp at Chico Meadows, ca. 1 mile north of Butte Meadows. Growing in a boggy area on the seepy slope slightly northeast of the 'swimming hole. 1295 Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 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
  CHSC48907  Micranthes integrifolia Vernon Oswald 1987-3-20 2292 Butte North side of Skyway 1.2 mi w of junction with Neal Rd. 408 Comment
  CHSC108868  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 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 se/S6. 1752 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC33909  Micropus californicus var. californicus M. S. Taylor 1981-5-21 3775 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  UCD134514  Micropus californicus var. californicus M. Vincent 1963-6-6 373 Butte one mile west from Nelson Bar Road. Comment
  SEINET10474314  Microseris douglasii Lowell Ahart 1985-4-29 Ahart 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  POM35006  Microseris nutans C. C. Bruce 1898-05 2462 Butte Doe mill Comment
  CAS-BOT-BC322774  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC31663  Microseris sylvatica L. Ahart 1979-4-19 1831 Butte Fields near Douglas Oaks. Peter Ahart Ranch, Honcut. 50 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
  JEPS86871  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte 4.4. mi ne Keefer Road (along Cohasset Hwy, then 0.4-0.6 mi s along private dirt road, Griffith residence); Cohasset Ridge 400 Comment
  RSA535779  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte Table Mt. 0.5 mi s of Derrick Road along cherokee Road, E side of road 396 Comment
  SEINET12269793  Mimulus aurantiacus var. grandiflorus Bolander, Keller 1872-1 s.n. Butte Butte Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  UCR190823  Mimulus guttatus 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
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  UCSB63615  Mimulus kelloggii Sterling, Lynda 1986-3-18 Butte S bank of Butte Creek; ca. 150 yds wsw of covered bridge; ca. 7 mile E of Chico 91 Comment
  CHSC42965  Mimulus moschatus Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC639090  Mimulus nasutus E. B. Copeland 1939-8-7 Butte Jonesville 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
  JEPS80654  Mimulus torreyi M. S. Taylor 1981-4-27 3555 Butte ca. 2 mi sw Brush Creek (ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd., ca. 0.5 mi n of Zink Rd.) 1005 Comment
  JEPS119684  Mimulus tricolor Lowell Ahart 2012-5-2 17962 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  CAS-BOT-BC174595  Minuartia californica H. E. Brown 1897-3-3 143 Butte Near Clear Creek 53 Comment
  CHSC38293  Minuartia californica Vernon Oswald 1983-2-20 91 Butte Upper Bidwell Park, Chico, on the north rim at the level of the w end of Horseshoe L. 128 Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  UCSB64006  Minuartia californica Ahart, Lowell 1974-3-12 Butte Peter Ahart Ranch; about 1/2 miles north and 2 miles east of Honcut; about 12 miles south of Oroville 45 Comment
  UCSC008596  Minuartia californica Randall Morgan 2008-4-1 4840 Butte Originally from Ahart Ranch Comment
  CHSC93353  Minuartia cismontana Lowell Ahart 2006-5-3 12567 Butte On basalt outcrops, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 392 Comment
  UCD98228  Minuartia cismontana G. F. Hrusa 1989-4-15 5922 Butte North Table Mountain. On west side of Cherokee Mountain Road. 300 Comment
  CAS-BOT-BC388610  Minuartia douglasii John Thomas Howell 1978-4-17 52838 Butte Table Mountain 381 Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  UCSB44147  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road; from Highway 70 Comment
  POM161689  Mitella pentandra E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC37122  Moehringia macrophylla L. Ahart 1982-9-13 3830 Butte On high bar that had been mined for gold along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  SEINET13711198  Moenchia erecta Lowell William Ahart, Lowell William Ahart 2000-1 8332 Butte 10 Air Mi. NE of Oroville at Oak Grove Cemetery (T19N, R5E, sec 23, Ctr.) 1800 Ft. 549 Comment
  JEPS103455  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC111978  Monardella breweri subsp. lanceolata Lowell Ahart 2012-6-2 18135 Butte Along the east side of a poor dirt road, about 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  UC1609442  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  UC1609467  Montia fontana Vernon H. Oswald and Lowell Ahart 1993-3-24 5244 Butte 2 mi n of Pentz Road (e side of Canyon n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 262 Comment
  CHSC46732  Montia fontana subsp. amporitana Lowell Ahart 1978-3-15 1614 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
  CHSC52116  Montia fontana subsp. chondrosperma Dena Gracey 1979-3-27 21 Butte S edge of Table Mountain 6 mi n of Oroville off Cherokee-Table Mt. Road .25 mi off road. 365 Comment
  SEINET10572727  Montia saxosa Mary Susan Taylor 1976-4-24 Taylor 1070 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  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
  SEINET10929037  Montia spathulata var. tenuifolia Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4859 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  JEPS118632  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
Read comments
Jun 20 2012
  CAS-BOT-BC260535  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  CHSC44457  Muhlenbergia filiformis Lowell Ahart 1988-6-29 6098 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  UC600755  Muhlenbergia filiformis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CHSC43129  Muhlenbergia richardsonis Robert Banchero 1981-8-6 637 Butte Ca 3 air miles se of Jonesville. Lake bed. 1853 Comment
  CHSC101163  Myosotis discolor Lowell Ahart 2009-5-15 15717 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
  CHSC97371  Myosotis discolor Paul Maslin 2006-4-15 41 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC12765  Myosurus apetalus var. borealis T. Rinker 1974-4-23 23 Butte Found in vernal pool at Broyles Road and Hwy. 99, ca. 14 mi n of Chico. 54 Comment
  CHSC46269  Myosurus apetalus var. borealis Vernon Oswald 1989-4-19 3742 Butte Wurlitzer Unit, Vina Plains Preserve. On the s side of Singer Creek. 57 Comment
  CHSC43251  Myriophyllum aquaticum Lowell Ahart 1987-10-22 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 609 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  RSA700392  Narthecium californicum Lowell A. Ahart 2004-8-2 11321 Butte The start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 4 miles (air) northeast of Stirling City 1690 Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  CHSC6156  Nassella pulchra E. Parreno 1968-4-19 66 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC48655  Navarretia divaricata Vernon Oswald 1983-7-6 834 Butte Beside Calif. Hwy. 32, 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. At the edge of the road. 1188 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
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  CHSC91114  Navarretia heterandra Lowell Ahart 2005-5-27 11812 Butte Pasture field, about 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC20514  Navarretia intertexta M. S. Taylor 1975-6-25 799 Butte Above dam area, ca. 1/2 mi n of Richardson Springs Hotel, ca. 7 mi ne of Chico. 243 Comment
  SEINET10969162  Navarretia intertexta Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4140 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC30683  Navarretia intertexta subsp. intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2758 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC69684  Navarretia intertexta subsp. intertexta Vernon Oswald 1987-6-23 3026 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  JEPS121945  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC600669  Navarretia intertexta subsp. propinqua E. B. Copeland 1931-7-17 Butte Dry Lake Jonesville Comment
  CHSC1296  Navarretia leucocephala P. Delaplane 1965-3-23 78 Butte H. Wurlitzer Ranch ca 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. Comment
  CHSC91112  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  POM74520A  Navarretia leucocephala subsp. leucocephala C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CDA40109  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte South edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. Comment
  CHSC91107  Navarretia tagetina Lowell Ahart 2005-5-28 11821 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
  CHSC103708  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico. 144 Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  UC1292078  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte along Chico Creek about 4 mi e Chico; e of Chico, Chico Creek Comment
  RSA178592  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte Along Chico creek about 4 miles east of Chico. Comment
  RSA769605  Nemophila pedunculata L. Ahart, John Dittes 2009-3-20 15499 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  JEPS122023  Nemophila spatulata Lowell Ahart 2014-7-4 19555 Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  UC1609479  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  CHSC38723  Nicotiana quadrivalvis Vernon Oswald 1983-6-13 669 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. 91 Comment
  UCD165420  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  SEINET10472782  Odontostomum hartwegii Mary Susan Taylor 1976-4-27 Taylor 1081 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CHSC47370  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte Joie Osgood Ranch, about 1 mile north-east of Honcut Cemetery, 4 miles north-east of Honcut. 79 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  CHSC48642  Orobanche fasciculata Vernon Oswald 1984-6-7 1256 Butte Between Chico and Forest Ranch on an abandoned section of old Hwy 32, 9.9 mi n-e of Hwy 99. 487 Comment
  CAS-BOT-BC500244  Orobanche uniflora subsp. occidentalis Lowell Ahart 1980-5-29 2359 Butte Sierra Nevada: 5 mi NE of Mountain House 1100 Comment
  POM44309  Orthocarpus attenuatus C. C. Bruce 1897-1 2087 Butte Iron Canyon Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  RSA34067  Orthocarpus campestris A. A. Heller 1939-5-13 15078 Butte On US Highway 99E near the 'Y' east of Richvale. Topotype. Comment
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  POM44320  Orthocarpus purpurascens C. C. Bruce 1887-04 2090 Butte Chico. Comment
  SEINET12334059  Orthocarpus pusillus R. A. Schlising 1981-1 4014 Butte along Hwy 70 S of Oroville, 0.2 mi S of jct with Cox Lane Comment
  CHSC50311  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail, ca. 0.4 mile north of the trailhead, ca. 2 miles north of the town of Feather Falls. 701 Comment
  SEINET3441866  Oxalis radicosa Unknown 2003-4-30 10119 Butte Oroville, Oroville, about 5.5 air miles southwest, about 3/5 of a miles west of Pacific Heights Road, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area 30 Comment
  CHSC27249  Oxalis rubra P. Moyer 1972-3-18 151 Butte CSUC campus. 2nd and Hazel, lawn. Comment
  UCD77993  Packera eurycephala Robert E. Preston 2001-7-9 1672 Butte Magalia, on serpentine outcrops along e side of The Skyway, between Coutelenc Rd and Magalia Dam, 682 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  CHSC31240  Panicum acuminatum M. S. Taylor 1979-8-4 2178 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CAS-BOT-BC253701  Panicum capillare Ira L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles W of Chico Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC34020  Panicum rigidulum subsp. rigidulum L. Ahart 1981-7-18 2943 Butte Along the edge of a ditch in the burrow area ca. 5.5 m sw of Oroville. On edge of the ditch on the w side of the burrow area and ca. in the middle. 35 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
  CHSC78170  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte On the south margin of the Thermalito Afterbay, north of the poor dirt road, just west of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. 42 Comment
  UC625524  Parvisedum pumilum Frank W. Gould 1938-4-23 306 Butte 2 mi n of Chico (along road) 60 Comment
  CDA32014  Paspalum dilatatum L. Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC6082  Paspalum dilatatum J. Wheeler 1968-5-17 204 Butte S side of Chico Junior High School, near curb, Chico. 59 Comment
  UC618996  Paspalum dilatatum H. S. Yates 1936-8-19 6128 Butte 2 mi sse Nelson; Chico Quad. Comment
  CHSC43277  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CAS-BOT-BC202815  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville 975 Comment
  CHSC44039  Paxistima myrsinites L. P. Janeway 1987-6-8 2159 Butte Along French Cr ca 1/2 mi north of Bush Cr and near the bridge of road to Coyote Gap. 640 Comment
  CHSC49019  Pedicularis attollens Vernon Oswald 1987-7-29 3167 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
  CHSC45734  Pedicularis densiflora J. Marr 1988-3-31 17 Butte 1 mi n of Concow Rd, 6 mi w of Hwy 70, 18 mi n of Oroville. 609 Comment
  SEINET10899920  Pellaea mucronata Mary Susan Taylor 1980-2-23 Taylor 2315 Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  SEINET10483086  Peltiphyllum peltatum Mary Susan Taylor 1976-5-5 Taylor 1119 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  JEPS50783  Penstemon azureus Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9279 Butte along Feather River Highway (now Calif. 70) about 3 1/4 mi n Jarbo Gap; along Feather River Highway, n of Jarbo Gap 609 Comment
  NY609844  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville 1600 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  CDA13728  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1997-6-27 13906 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC44713  Penstemon laetus var. leptosepalus R. Banchero 1980-6-26 264 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32. 1219 Comment
  POM195087  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral. 1646 Comment
  RSA109280  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  RSA4118  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  UC195476  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte on edge of a n slope at Little Summit Little Summit 1463 Comment
  SEINET5329277 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte T23N R8E S5 SE1/4 Comment
  NY651290  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  CHSC23460  Pentagramma triangularis J. R. Lee 1974-4-15 1 Butte Found on n side of Upper Bidwell Park road w of Salmon hole and 4.3 mi from the Chico Municipal golf Course. 121 Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC30083  Pentagramma triangularis subsp. semipallida M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3190 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC101304  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS113226  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  JEPS120170  Pentagramma triangularis subsp. triangularis Lowell Ahart 2012-6-2 18136 Butte About 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  SEINET3166411  Pentagramma triangularis subsp. triangularis P. J. Alexander 2009-5-27 1049 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  CHSC36530  Perideridia bolanderi subsp. bolanderi L. Ahart 1982-6-4 3554 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC60947  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC105535  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, 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 Philbrood Reservoir. 1917 Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  CHSC40234  Perideridia lemmonii Vernon Oswald 1985-6-15 1836 Butte Black Bart Rd., ca. 1.5 mi se of Lumpkin Rd. 655 Comment
  CHSC31771  Persicaria lapathifolia L. Ahart 1974-9-25 634 Butte Peter Ahart Ranch, Honcut. Garden weed. 45 Comment
  CAS-BOT-BC419174  Persicaria maculosa Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek 50 Comment
  CHSC51274  Persicaria punctata Lowell Ahart 1990-10-3 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1047037  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 343 Butte along Feather River Hwy about 0.5 mi below Las Plumas road junction (about 14 mi ne of Oroville) Comment
  SEINET12331808  Phacelia heterophylla L. Ahart, Ahart, P. 1984-1 4722 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  RSA0055024  Phacelia heterophylla var. virgata James R. Shevock 1972-5-19 1778 Butte Jarbo Pass, Highway 70, Feather River Canyon. 701 Comment
  UC1228321  Phacelia imbricata L. R. Heckard 1952-6-20 321 Butte along Feather River hwy just below Las Plumas Rd Comment
  POM73731  Phacelia ramosissima var. ramosissima C. C. Bruce 1897-06 1981 Butte Big Chico Comment
  CHSC48477  Phacelia vallicola Vernon Oswald 1986-4-28 1982 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CHSC117300  Phalaris arundinacea B. Castro; Melinda Carlson 2007-10-25 1677 Butte (Arroyo Chico land grant area). Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W. of River Road and north of the creek with surrounding disturbed riparian forest. 39 Comment
  CAS-BOT-BC250702  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 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
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  JEPS117537  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 265 Comment
  SEINET10970382  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1975-9-19 Taylor 912 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  JEPS106316  Phleum pratense Lowell Ahart 2004-6-22 11124 Butte On the north side of Hupp Coutolenc Road, about 1/2 mile north of Paradise Lake, about 1/2 mile northeast of De Sabla Reservoir, about 4 miles (air) southwest of Stirling City 821 Comment
  UC600675  Phlox austromontana E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  JEPS122446  Phlox speciosa L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. Quad: Forbestown 7.5'. Comment
  SEINET7073628  Phlox speciosa A. G. Vestal 1955-5-21 s.n. Butte About 15.3 miles east of Oroville on the Forbestown Road. UTM Zone 10, 645084mE, 4373885mN. Coordinate datum: NAD27. Comment
  CHSC35096  Phlox speciosa subsp. occidentalis Robert A. Schlising; Coleta Lawler 1981-4-12 4025 Butte E of Oroville. 365 Comment
  CHSC4667  Phlox speciosa subsp. occidentalis R. Carter 1966-4-11 337 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds W of R.R. bridge over S Fork. 152 Comment
  POM75214  Phlox speciosa subsp. occidentalis C. C. Bruce 1898-05 2448 Butte Forest Ranch Comment
  UCD102042  Phoradendron bolleanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC30052  Phoradendron densum David G. Bendix 1978-4-12 10 Butte 50 m ne of Intersection Coutelenc Road with Skyway, Magalia, CA. 830 Comment
  CHSC33900  Phoradendron libocedri M. S. Taylor 1981-5-15 3739 Butte At loop in rd 23N00.1, serpentine barrens, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  JEPS120063  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC31212  Physalis acutifolia M. S. Taylor 1980-7-6 3060 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
Read comments
Aug 7 2007
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  SEINET11892048  Physocarpus capitatus Unknown 1981-1 2921 Butte ca.1/2mi W of Oroville Forbestown Rd, on S side of Black Bart Rd 640 Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC52770  Phytolacca americana L. P. Janeway 1990-5-25 3691 Butte Campus of California State University, Chico; near Big Chico Creek along path from Holt Hall to the bridge across the creek towards Sylvester's Cafe-by-the-Creek. 57 Comment
  RSA769809  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  CHSC28827  Pilularia americana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 419 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd ( at e edge of mt). 381 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
  CHSC71253  Pilularia americana Lowell Ahart 1998-7-1 8022 Butte About 1/4 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 3 miles (air) north of Oroville. 403 Comment
  JEPS127263  Pilularia americana Lowell Ahart 2016-5-30 20882 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  NY34619  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC78447  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC23635  Pinus contorta subsp. murrayana M. S. Taylor 1976-4-1 1048 Butte 500 m s of Old Humboldt Rd. ca. 1/2 mi w of Butte Creek, Butte Meadows. 1706 Comment
  CHSC109842  Pinus jeffreyi L. P. Janeway 2012-6-23 10893 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
  CHSC2352  Piperia elongata R. M. Staley 1952-7-2 Butte Paradise. 518 Comment
  UC1586475  Piperia transversa Vernon H. Oswald and Lowell Ahart 1991-7-15 4732 Butte ca 4.75 mi (air) ne Brush Creek (Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just e of its junction with Oroville-Quincy Hwy) 1109 Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CAS-BOT-BC169562  Plagiobothrys M. S. Taylor 1975-4-26 515 Butte Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy, ca 1 mi SE of Paradise 609 Comment
  CHSC47996  Plagiobothrys bracteatus Vernon Oswald 1984-5-13 1185 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. In a slough. 39 Comment
  CHSC40760  Plagiobothrys fulvus var. campestris Ahart; Jokerst 1985-5-10 4948 Butte On the sides of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 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
  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
  CHSC94243  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 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
  CHSC46251  Plagiobothrys leptocladus Vernon Oswald 1989-4-20 3749 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), on the ranch road ca. 0.3 mi n of the main gate at Gridley-Colusa Hwy. 18 Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  RSA754790  Plagiobothrys nothofulvus L. Ahart 2009-4-26 15645 Butte Sides of Guardians Trail, about 200 yards SW of Pine Trail, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC31582  Plagiobothrys scriptus L. Ahart 1977-4-2 1235 Butte On bottom of small swale. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC84126  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Road Boat Ramp, on the north side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 38 Comment
  CDA40661  Plagiobothrys stipitatus T. C. Fuller 1958-4-15 4794 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC112245  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  JEPS107765  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  SEINET3449087  Plagiobothrys stipitatus var. micranthus Unknown 2003-5-28 10229 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain west of Cherokee Road, about 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence 270 Comment
  UCD121010  Plagiobothrys stipitatus var. micranthus W. R. Powell 1968-4-23 1470 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC38279  Plagiobothrys tenellus Vernon Oswald 1983-3-6 122 Butte Upper Bidwell Park, Chico, near the top of the north slope 0.2 mi e of the end of the North Rim Trail. 390 Comment
  CHSC43425  Plagiobothrys tenellus Lowell Ahart 1977-4-28 1329 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 4 miles south-west of Feather Falls. 365 Comment
  CHSC103945  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC25538  Plantago coronopus Robert A. Schlisng 1974-4-24 3121 Butte Northernmost part of the county, near jct Hwy 99 and Broyles Road. Comment
  CHSC24953  Plantago elongata Ron Stewart 1976-3-24 Butte Ca 40 yds sw of the Broyles Road, -Hwy 99 intersection. 73 Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  SEINET12328349  Plantago elongata Unknown 1984-1 4584 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 Comment
  CHSC3639  Plantago erecta Alice L. Stoll 1966-3-28 34 Butte 7.9 miles N. E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  SEINET10499848  Plantago erecta Lowell Ahart 1983-4-10 Ahart 3921 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS88267  Plantago lanceolata Vernon H. Oswald and Lowell Ahart 1996-5-27 7666 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. Sacramento R. Nat'l Wildlife Refuge (in the s. paddock of Tract 7, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS124275  Plantago major Lowell Ahart 2015-11-18 20663 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC26859  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1664 Butte On n side of Old Humbug Rd, across from Butte Meadows. 1371 Comment
  CHSC109624  Platanus racemosa Lowell Ahart 2012-5-17 18074 Butte On the west side of a horse trail, about 40 yards north of Big Chico Creek, south of the southwest corner of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC20549  Platanus racemosa M. S. Taylor 1975-7-4 829 Butte Along Big Chico Creek, Five Mile, Upper Bidwell Park, Chico. 76 Comment
  SEINET10905829  Plectritis ciliosa Mary Susan Taylor 1974-3-5 Taylor 76 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC87551  Plectritis ciliosa subsp. ciliosa R. D. Fischer 2004-4-7 74 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near end of 10 Mile House Road in mdw. 200 ft south of gated end of park road. 228 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  UC600609  Pleuricospora fimbriolata unknown 1926-6-21 409 Butte Jonesville Comment
  CHSC6058  Poa E. Parreno 1968-3-15 41 Butte Right side of rd. leading to Missle Base, side intersecting with Keefer Rd., Chico. Comment
  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
  CHSC42454  Poa annua Lowell Ahart 1987-5-6 5559 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
  UC820683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte summit above Jonesville 2133 Comment
  CHSC42452  Poa bulbosa Lowell Ahart 1987-5-27 5718 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  SEINET10921189  Poa compressa Lowell Ahart 1988-6-29 Ahart 6090 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone, Butte County, California. Common. Yellow Pine Forest. 622 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
  CAS-BOT-BC255234  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  CHSC8252  Poa secunda subsp. secunda M. Banning 1969-4-18 81 Butte Table Mt., 1/2 mi. S. of Oregon City junction along road. 487 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  SEINET10498987  Pogogyne douglasii Mary Susan Taylor 1986-5-6 Taylor 5621 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  JEPS118324  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  JEPS87156  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  RSA280329  Polygonum alpinum Lyman Benson 1932-7-28 3972 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS104287  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links Comment
  RSA489570  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of Hwy 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico. 610 Comment
  CHSC45376  Polygonum bolanderi Vernon Oswald 1986-7-21 2212 Butte Little Butte Creek Canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 Comment
  CHSC26670  Polygonum douglasii subsp. spergulariiforme M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1460 Butte Scattered on e side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  RSA4447  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  UCSB63842  Polygonum minimum Ahart, Lowell 1997-8-1 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
  CHSC39127  Polygonum parryi R. A. Schlising 1980-5-31 3606 Butte S of the village of Cohasset; along fire trail above Cohasset Highway; in open, muddy areas. Comment
  RSA724878  Polygonum persicaria L. Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  UC465755  Polygonum polygaloides subsp. kelloggii Mrs. R. M. Austin July 1896 283 Butte Colby Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  SFV10663  Polypodium californicum M. L. Vincent 1964-4-8 510 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  UCD137019  Polypodium calirhiza M. S. Taylor 1980-3-19 2394 Butte Macabes Creek Canyon, ca. 100 ft. E of Lumpkin Rd., ca. 2.5 mi. N of its jct with Forbestown Rd., ca. 18 mi. NE of Oroville. 396 Comment
  JEPS122199  Polypogon interruptus Lowell Ahart 2014-4-16 19369 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10530119  Polystichum imbricans Mary Susan Taylor 1978-7-21 Taylor 1799 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC116274  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte 100 yards southwest of the bridge across Butte Creek, on the north side of Doe Mill Road, about 3 miles (air) north of De Sabla Resevoir. 660 Comment
  JEPS106115  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SEINET10460841  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Above Jonesville, on border of drying pond 1750 Comment
  CHSC57136  Portulaca oleracea L. P. Janeway 1988-6-29 2901 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek Bridge. 170 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  CHSC8774  Potamogeton gramineus S. Chulasmai 1966-4-15 11 Butte Lanniger Rd. (up to northern Chico). Stream, lake. Comment
  CHSC46277  Potamogeton pusillus var. pusillus Vernon Oswald 1989-5-19 3779 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond in an old channel of the Sacramento River. 45 Comment
  CHSC46588  Potentilla drummondii V. Oswald; L. Ahart 1989-7-12 3855 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC48861  Potentilla glandulosa subsp. ashlandica Vernon Oswald 1987-6-9 2967 Butte Near the headwaters of Scotts John Creek, 3.3 mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CDA26094  Potentilla glandulosa subsp. nevadensis T. C. Fuller 1962-7-12 9167 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC29397  Poterium sanguisorba R. A. Schlising; R. Banchero 1980-6-17 3738 Butte N of Magalia, along Coutelenc Road, 0.7 mi S of jct with Skyway at Lovelock. In meadow. 902 Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  UCD125325  Prunella vulgaris L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC159925  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville Comment
  SEINET10838465  Prunus emarginata Mary Susan Taylor 1976-4-27 Taylor 1095 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
  POM89316  Prunus subcordata C. C. Bruce 1897-05 1813 Butte Butte Creek. Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon 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
  CAS-BOT-BC356954  Pseudognaphalium canescens John Thomas Howell 1976-7-14 51811 Butte Feather River Canyon Highway, just east of Jarbo Gap 640 Comment
  CHSC30026  Pseudognaphalium stramineum L. Ahart 1980-5-4 2184 Butte Pasture, southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  CHSC3906  Pseudotsuga menziesii var. menziesii R. Carter 1966-7-31 500 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
  CHSC103937  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-22 16723 A Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 387 Comment
  UC195396  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte 8 mi from Chico (Chico-Oroville road) Comment
  CHSC46966  Psilocarphus tenellus var. globiferus Lowell Ahart 1979-5-11 1867 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC67625  Ptelea crenulata J. P. Smith, J. O. Sawyer 1973-4-14 6063 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC44131  Purshia tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. On top of the ridge. 2103 Comment
  CHSC27182  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  CHSC100487  Pyracantha fortuneana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA0080623  Pyrola dentata L. Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  CAS-BOT-BC462604  Pyrola dentata Duncan Dunning 1921-7-29 9 (USDA no. 42081) Butte Lassen Forest, Chico Meadows 944 Comment
  UC478488  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC104151  Quercus X morehus L. R. Abrams 1918-8-1 7244 Butte Las Plumas Comment
  JEPS120491  Quercus X morehus B. Castro 2003-9-10 1461 Butte CA 15 mi NE of Oroville, on the slopes over the West Branch Feather River across from the Lime Saddle area. Just below State Recreation Area boundary. Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC33292  Quercus chrysolepis S. Posner; K. Stern 1972-10-12 3 Butte Bidwell Park, south bank of Big Chico Creek, facing golf course, near firing range. Comment
  UC600520  Quercus chrysolepis H. F. Copeland 1920-7-26 335 Butte Jonesville Comment
  CDA21862  Quercus chrysolepis var. chrysolepis L. Ahart 1999-6-12 8085 Butte South branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC2026891  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18119 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking Area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC86633  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte Hills two miles N of Oroville Comment
  SACT002656  Quercus dumosa Herbert Copeland 1939-7-8 Butte Humboldt Road 12 miles east of Chico. Shrub 2m tall tall very abundant as component of chaparral. Comment
  CHSC32633  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3476 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, in steep serpentine slope, ca. 3/4 mi (downhill) ne of Magalia. 548 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
  CAS-BOT-BC62796  Quercus garryana var. breweri John Thomas Howell 1962-6-15 37439 Butte Magalia 731 Comment
  CHSC102405  Quercus kelloggii Lowell Ahart 2009-6-19 15952 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  CHSC624  Quercus kelloggii M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC7036  Quercus kelloggii Lynn R. Thomas 1969-4-18 108 Butte NW edge of Calif. 32, ca. 2 mi ne of Forest Ranch. 731 Comment
  JEPS113184  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  JEPS37799  Quercus kelloggii W. L. Jepson 1936-8-7 17857 Butte Butte Creek (upper) Bear Buttes Comment
Read comments
Apr 5 2012
  SEINET10477291  Quercus lobata Mary Susan Taylor 1975-5-6 Taylor 558 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
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  CHSC1483  Ranunculus alismifolius M. Roberson 1956-4-1 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET12094427  Ranunculus alismifolius Unknown 1983-1 353 Butte E. of Philbrook Reservoir at county line, T25N, R5E, sec. 16, Jonesville 15' quad 1975 Comment
  RSA399351  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  CHSC50337  Ranunculus alismifolius var. hartwegii Vernon Oswald; Lowell Ahart 1990-5-29 4268 Butte Butte Creek House Meadow on the east side of Humbug Rd, ca. 3.5 miles (air) east-southeast of Jonesville. 1777 Comment
  CHSC45398  Ranunculus arvensis Lowell Ahart 1977-4-28 1331 Butte In oat field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  CAS-BOT-BC378986  Ranunculus arvensis Lowell Ahart 1980-5-10 2234 Butte Honcut, Peter Ahart Ranch 50 Comment
  RSA299449  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte Skyway Drive, 1 miles E of Hwy 99. 61 Comment
  CHSC37497  Ranunculus bonariensis var. trisepalus J. D. Jokerst; R. A. Schlising 1983-4-9 1711 Butte In the large vernal pool that is ca. 1/4 mile east of the south fork of Coal Cr. Canyon. Top of Table Mountain. 396 Comment
  CHSC96230  Ranunculus hebecarpus R. Fischer 2006-4-25 1000 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing at edge of wet meadow at bottom of 10 Mile House Road. 228 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  JEPS119711  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA517348  Ranunculus muricatus Barbara J. Ertter 1986-4-13 5888 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC64209  Ranunculus occidentalis var. ultramontanus S. C. Morey 1983-8-1 657 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. In meadow. 1292 Comment
  POM219014  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. 1550 Comment
  POM219012  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  SEINET11526628  Raphanus sativus Harris, Heinze 1963-4-16 s.n. Butte Chico. 61 Comment
  CAS-BOT-BC59882  Rhamnus ilicifolia Lowell Ahart 1989-5-10 6211 Butte Near a dirt road, about 1/10 mi. nw. of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC52197  Rhamnus ilicifolia L. P. Janeway 1989-5-19 3265 Butte Serpentine outcrop and open area near upper se'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  RSA719542  Rhamnus ilicifolia Michael A. Vincent, K. Levings 2006-7-29 12884 Butte Northeast of Chico along Rt. 32. Comment
  UC726401  Rhamnus purshiana A. A. Heller 1919-5-17 13157 Butte near Stirling; Feather River 975 Comment
  CDA13234  Rhamnus rubra subsp. rubra G. F. Hrusa, T. D. Wilfred 1996-7-8 13081 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  RSA739861  Rhamnus tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills, upper Bidwell Park, Chico, NNW facing upper slope below N Rim Trail overlooking Sycamore Creek. 338 Comment
  CHSC31824  Rhamnus tomentella subsp. tomentella L. Ahart 1975-6-5 782 Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek on moist to dry loamy soil. 45 Comment
  CHSC39786  Rhamnus tomentella subsp. tomentella Eloise Gallatin 1935-5-4 Butte Humboldt Road above Paradise. Comment
  CHSC86433  Rhamnus tomentella subsp. tomentella Jenny Marr 1994-6-13 88 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  POM136575  Rhamnus tomentella subsp. tomentella A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  CHSC13517  Rhododendron occidentale A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CHSC43880  Rhododendron occidentale L. P. Janeway 1987-5-10 2055 Butte Near Robley Point; along dirt road 3 mi from Stirling City towards West Branch Feather River. 914 Comment
  CHSC65548  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N25; about 1.5 mi west of Kenebeck Ridge. 1249 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  UC1562393  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  SBBG17304  Ribes bracteosum M. Vincent 1962-4-15 184 Butte The Skyway, 1 mi S of Stirling City Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  SBBG83400  Ribes nevadense D. Neubacher 1976-5-25 23 Butte Rag Dump Rd, 14 mi SE of Stirling City 1280 Comment
Read comments
Jan 13 2018
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  SEINET12216578  Ribes roezlii M. R. Nichols 1975-1 14 Butte 6.8 mi NE of Chico on Cohasset Rd from Chico Airport 579 Comment
  CHSC81519  Ribes roezlii var. roezlii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  SBBG119803  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville 31 Comment
  CAS-BOT-BC74456  Rorippa curvisiliqua Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palerma. 35 Comment
  CHSC112733  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC116130  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 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
  JEPS103337  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SD1959  Rorippa nasturtium-aquaticum E. B. Copeland 1929-7-15 Butte Jonesville Comment
  UC600715  Rorippa nasturtium-aquaticum H. F. Copeland 1920-5-23 221 Butte Jonesville Comment
  UC1562370  Rorippa palustris Lowell Ahart 1990-6-16 6516 Butte about 1/2 mi sw Enterprise Bridge (across Lake Oroville); below high water line Lake Oroville 243 Comment
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 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
  CHSC82478  Rosa bridgesii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9742 Butte 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
  CHSC66083  Rosa californica Vernon H. Oswald 1996-5-22 7628 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Between the farm road and the slough at the SE corner of the Riparian Sanctuary. 28 Comment
  SEINET8723570 Image available Rosa californica H. S. Reed 1939-1 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CDA3944  Rubus laciniatus L. Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC4724  Rumex acetosella R. Carter 1966-4-21 358 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing along roadside on E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  CHSC99475  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC113375  Sagina apetala Lowell Ahart 2014-4-15 19354 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. Comment
  JEPS119540  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte East side of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET5337060  Sagina decumbens subsp. occidentalis B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3295 Butte Peter Ahart Ranch ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  CHSC49469  Sagittaria cuneata Vernon Oswald; Lowell Ahart 1987-7-1 3061 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC117750  Salix exigua Lowell Ahart 2016-10-25 21375 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC108766  Salix gooddingii L. P. Janeway 2011-5-9 10253 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  JEPS122277  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC104073  Salix hindsiana Lowell Ahart 1987-5-6 5538 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The 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']. 770 Comment
  LA208811  Salix lasiandra E. B. Copeland; 1931-6-10 619 Butte Jonesville 1500.0 Comment
  CAS-BOT-BC125180  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CDA38779  Salix lasiandra var. lasiandra L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC106984  Salix lasiolepis Lowell Ahart 1987-4-30 5492 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC108852  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  JEPS119571  Salix lasiolepis Lowell Ahart 2012-2-22 17749 Butte On the east side of South Rim Trail, at the old homestead, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  POM219072  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville. Near the head of N Willow Creek. 1550 Comment
  CHSC11989  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville. 1500 Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  UCR188576  Salsola tragus George K. Helmkamp, E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC23670  Sambucus mexicana M. S. Taylor 1976-4-27 1083 Butte Scattered on W side of Cohasset Hwy, Ca. 7 mi N of Chico. 121 Comment
  CHSC48019  Sambucus mexicana Vernon Oswald 1985-7-30 1915 Butte Four Trees-Coyote Gap Rd. 1.8 mi W of Four Trees. 1463 Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  CHSC77423  Sambucus mexicana Tim Stofer 1997-4-20 19 Butte This plant was located on the east side of the trail 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC238621  Sambucus nigra subsp. caerulea A. A. Heller; H. E. Brown 1902-5-14 5550 Butte Berry Canyon (Near Clear Creek) Comment
  SD4966  Sambucus racemosa E. B. Copeland 1930-7-12 Butte Above Jonesville 2100 Comment
  CHSC45732  Sanicula bipinnata Troy Griffiths 1988-3-8 64 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  CHSC90591  Sanicula bipinnatifida Gary R. Koses 1979-3-27 11 Butte 11 mi se of Chico, junction of Pentz rd and Pentz Magalia Hwy, s side of Pentz rd. Comment
  CHSC1981  Sanicula bipinnatifida var. flava P. Delaplane 1965-5-4 59 Butte At E end of Lake Concow on Concow Road. 1219 Comment
  RSA52125  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10939830  Sanicula crassicaulis Lowell Ahart 1984-4-3 Ahart 4540 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  UC1532341  Sanicula tuberosa Vernon Oswald 1986-6-29 1988 Butte Rim Rd (Ponderosa Way) 3 mi N of Jarbo Gap on Hwy 70 868 Comment
  CDA4889  Sapium sebiferum G. Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; Between Bidwell Canyon Drive and Lake Oroville, 440 feet south of Arroyo Drive and 2200 feet south-southwest of Bidwell Canyon Campground. Comment
  CHSC3358  Schinus dependens Robert L. Smith 1966-3-4 39 Butte U.S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC84662  Schinus molle Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 ft southwest of the base of Oroville Dam. Along a drainage area below the trailer/office building. 112 Comment
  UCD49962  Schoenoplectus mucronatus Carl Wick 1983-6-1 s.n. Butte CA. Butte Co. Comment
  CHSC11928  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  UC1100920  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge Comment
  CHSC78227  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  SEINET10508334  Scribneria bolanderi Mary Susan Taylor 1979-5-6 Taylor 1996 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  RSA718334  Scutellaria californica L. Ahart 2006-6-9 12658 Butte North side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.75 miles (air) southwest of Pulga. 386 Comment
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  JEPS115658  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards 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 436 Comment
  CHSC4014  Scutellaria tuberosa D. B. Joley 1967-4-16 24 Butte Few plants in a field, ca. 1/4 mile after you turn off 99, s of Chico turn left on first dirt road past Butte Creek Bridge on 99. 59 Comment
  CHSC6181  Secale cereale J. Wheeler 1968-5-16 Butte N bank of Sandy Gulch e of Longfellow Bridge, Chico. 59 Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC456  Sedella pumila C. Merton 1929-4-18 Butte Paradise. 365 Comment
  CHSC31466  Selaginella hansenii M. S. Taylor 1981-1-5 3371 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC48044  Selaginella wallacei L. P. Janeway 1984-9-29 1176 Butte Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). 'Feather Falls Scenic Area. 563 Comment
  CAS-BOT-BC363283  Senecio aronicoides A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  RSA712845  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Comment
  UCD135758  Senecio sylvaticus Robert E. Preston 1988-5-4 590 Butte 6 miles north of Oroville, on Table Mountain. 396 Comment
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  CHSC65683  Senecio vulgaris Vernon H. Oswald 1996-3-22 7255 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  JEPS98698  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET9798642 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  SEINET10901939  Setaria glauca Mary Susan Taylor 1979-10-3 Taylor 2221 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  JEPS119849  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte On the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. Comment
  SEINET11994748  Sibara virginica Unknown 1985-1 4871 A Butte along Wyandotte Creek & Central House Road, NW of Honcut, about 12 mi S of Oroville 35 Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC24146  Sidalcea calycosa B. Bunge 1976-4-12 9 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway, Chico. 67 Comment
  CHSC39887  Sidalcea 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
  SEINET11992378  Sidalcea calycosa M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5404 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CHSC75384  Sidalcea diploscypha Jennifer Slater 1997-4-27 36 Butte Upland the Wurlitzer addition of the Vina Plains Preserve, west of the Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC61324  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte On gravel bar along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC34956  Sidalcea glaucescens R. Schlising; R. Banchero 1980-7-14 3906 Butte North part of county, 0.4 mi N of Snag Lake. Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 Comment
  UCD116742  Sidalcea hartwegii Dana J. LeNarz 1982-4-8 14 Butte 110 m SE of Butte Creek, in vicinity of Covered Bridge, 9.7 km SE of Chico. 122 Comment
  CHSC101171  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC99579  Silene antirrhina L. P. Janeway; David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills. Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. 902 Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  SEINET10932255  Silene californica Mary Susan Taylor 1980-10-6 Taylor 3353 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC219  Silene gallica M. Roberson 1956-5-14 Butte S.W. of Paradise, along Skyway. 426 Comment
  CHSC78071  Silene laciniata subsp. californica Caleb E. Casey 1999-5-11 Butte Green gate road, along Hwy. 32. Along road embankment. 426 Comment
  CHSC84918  Silene laciniata subsp. californica Janice Morris 1995-4-24 90 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 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
  CAS-BOT-BC181358  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  CHSC3658  Sinapis arvensis Robert D. Briggs 1966-3-15 R- 58 Butte 5 miles south of downtown Chico near hwy. U.S. 99E. Comment
  CHSC80520  Sinapis arvensis Vernon H. Oswald 2001-4-1 9993 Butte Grainland Rd (Pratt Grant Rd) 0.75 mi east of Seven Mile Lane, southwest of Chico. 30 Comment
  CAS-BOT-BC74928  Sinapis arvensis Lowell Ahart 1974-5-1 s.n. Butte About one mile east of Bangor. 500 Comment
  RSA26487  Smilax californica C. Dudley 1940-06 s.n. Butte Near Magolia. Comment
  SEINET10839147  Solidago canadensis subsp. elongata Mary Susan Taylor 1978-7-21 Taylor 1832 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC28692  Soliva sessilis M. S. Taylor 1979-5-6 2006 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CAS-BOT-BC374754  Sonchus tenerrimus Lowell Ahart 1984-11-1 4832 Butte On the Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC79905  Sorbus scopulina G. F. Hrusa; T. D. Wilfred 1996-7-9 13107 Butte Northern California, Plumas National Forest. Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  UCR188719  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UCR219097  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15574 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10452463  Spartium junceum Mary Susan Taylor 1975-4-26 Taylor 524 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
  HSC95535  Spergula arvensis L. Ahart 2003-6-23 10307 Butte Fallow field on Peter Ahart Ranch, .5 mi. E of Palermo Honcut Hwy., 2 mi. N of Honcut, 12 mi. S of Oroville 30 Comment
  CHSC10664  Spergula arvensis subsp. arvensis Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC50032  Spergula arvensis subsp. arvensis Lowell Ahart 1990-1-17 6406 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CDA3448  Spergula arvensis subsp. arvensis L. Ahart 2000-5-23 8388 Butte About 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  JEPS120960  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  SEINET10537506  Spergularia rubra Lowell Ahart 1983-8-16 Ahart 4309 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CHSC28745  Sphenosciadium capitellatum M. Banchero 1979-9-2 33 Butte Streamside in large meadow near Humboldt Road crossing of Butte Creek, 8.1 mi NE jct Hwy 32. Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  RSA700394  Spiraea douglasii L. Ahart 2004-8-2 11331 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 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
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC44531  Spiranthes porrifolia Lowell Ahart 1988-5-29 6012 Butte About 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  JEPS98321  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte 5 air miles E of Oroville Dam (old gold mining pit SE of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC85751  Stachys ajugoides var. ajugoides G. F. Hrusa; T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada--Plumas National Forest. Approx. 0.4 m. E of bridge over Marble Creek on USFS N60. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  CDA13910  Stachys pycnantha G. F. Hrusa, T. D. Wilfred 1997-7-3 13983 Butte Sierra Nevada; Little Butte Creek, N of Magalia and immed. E of Holmwood Drive. Comment
  CHSC806  Stachys pycnantha E. Walker 1932-7-26 Butte Magalia Heights. 731 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
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CHSC34185  Stellaria crispa L. Ahart 1981-9-15 3165 Butte Along banks of French Creek, below the swamp and where the road forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  RSA0116103  Stellaria longifolia Lowell A. Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC29990  Stellaria nitens L. Ahart 1980-3-26 Butte E of the cemetery, ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CHSC50034  Stellaria nitens Lowell Ahart 1990-3-19 6423 Butte Along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 36 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
  CHSC46828  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-22 4629 Butte NE of Philbrook Lake in N part of county near Plumas County line. Edge of meadows. 1935 Comment
  UC1564733  Stellaria umbellata V. Oswald and L. Ahart 1989-7-21 3876 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  OBI22289  Stipa stillmanii Robert F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  CDA25173  Streptanthus diversifolius L. Ahart 1998-6-3 7967 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  JEPS98473  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UC1586579  Streptanthus polygaloides Vernon H. Oswald and Lowell Ahart 1991-6-5 4648 Butte dirt road to Minnie-Ha-Ha Mine (on w side of Hwy 32 ca 1.5 air mi nw of Platte Mtn Lookout, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  CHSC36696  Streptanthus tortuosus R. E. Preston 1981-6-16 88 Butte Ca. 10.5 mi ne of Paradise. 1127 Comment
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  JEPS110447  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-6-9 12647 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  UCD138355  Stuckenia pectinata Herbert L. Mason; Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road. Comment
  SEINET6647401  Styrax officinalis var. californicus M. J. Williams, W. Roderick 1984-5-25 84- 23 -2 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam. Comment
  UCD119109  Styrax redivivus E. D. Phelps 1930-9-23 2151 Butte Pulga. Comment
  CHSC116483  Styrax redivivus R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49598 Butte Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CAS-BOT-BC234615  Symphoricarpos mollis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC31584  Symphyotrichum chilense Lowell Ahart 1977-9-20 1572 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  CHSC99671  Symphyotrichum spathulatum var. yosemitanum R. A. Schlising 2006-8-16 4465 Butte East of Jonesville and east of Snag Lake, at Summit Lake. In open areas around lake. 1889 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  CHSC113661  Tanacetum parthenium L. P. Janeway 2014-5-29 11278 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC26830  Tauschia kelloggii M. S. Taylor 1978-5-6 1624 Butte On n side of Ponderosa Way, ca. 4 mi e of Cohasset. 609 Comment
  SEINET10906782  Tauschia kelloggii Mary Susan Taylor 1981-5-15 Taylor 3754 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC110455  Tellima grandiflora L. P. Janeway 2013-5-19 11110 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  CAS-BOT-BC445890  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton and Coutelence. Comment
  CAS-BOT-BC445892  Tellima grandiflora Mrs. Eva Pattee 1923-5-15 s.n. Butte Near Cresta Comment
  SEINET10483064  Tellima grandiflora Mary Susan Taylor 1981-4-28 Taylor 3569 Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC197408  Thinopyrum intermedium subsp. intermedium Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CAS-BOT-BC88230  Thysanocarpus curvipes Dr. E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  UC857555  Thysanocarpus curvipes A. A. Heller 1915-4-20 11855 Butte Chico-Centerville road 3 mi from Chico Comment
  CHSC100975  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC562  Thysanocarpus curvipes var. curvipes M. Roberson 1956-4-16 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC88971  Thysanocarpus radians Christine Hantelman 2000-4-8 66 Butte In vernal pool preserve between Oroville airport runway and Table Mountain golf course. Around pools. 60 Comment
  SEINET3449123  Thysanocarpus radians Unknown 2003-3-24 10023 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, on the north side of Fall River, west of the bridge across Fall River 40 Comment
  HSC38050  Thysanocarpus radians Thomas W. Nelson, Jane P. Nelson 1976-5-9 2456 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC49044  Tonella tenella Vernon Oswald 1986-4-12 1067 Butte Butte Creek Trail ca. 1.5 mi s of Doe Mill Rd. 609 Comment
  CHSC45889  Torilis nodosa Lowell Ahart 1977-5-8 1358 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CDA13332  Torreya californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13178 Butte Sierra Nevada; Small colony in shaded woods approx. 0.4 m from Hwy 162 on 22N89. Tree, approx. 10 m tall. Uncommon here. Immed. S of Rogers Cow Camp. Comment
  CHSC29217  Torreya californica M. S. Taylor; J. D. Jokerst 1980-4-27 2553 Butte Along Middle Butte Creek off of Little Butte Creek, ca. 1 1/2 mi se of Nimshew. 609 Comment
  UC494275  Torreya californica H. F. Copeland 1932-7-18 Butte near West Branch Comment
  CHSC