Search Results — 2000 specimen records retrieved (1625 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73555  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280 Comment
  UC600580  Abies magnifica var. magnifica H. F. Copeland 1931-6-11 Butte near Jonesville (woods above Kirby Meadows) Comment
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  UC1192282  Abutilon theophrasti Herbert L. Mason and Verne Grant 1946-9-4 13105 Butte Colusa Gun Club Butte Sink Comment
  CHSC110871  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  CHSC79434  Acer circinatum G. F. Hrusa; T. D. Wilfred 1997-5-1 13707 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  CHSC51843  Acer macrophyllum Richard Steward 1988-3-6 1 Butte East bank of small stream, ca. 4.2 mi N, 0.3 mi E of Tall Pines Golf Course, Paradise. 640 Comment
  SFV16943  Acer macrophyllum J. N. Hogue 1980-9-6 83 2 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  UCD117057  Acer macrophyllum Johann Watjen 1969-5-4 36 Butte confluence of Rock Creek and Feather River North Fork, Feather River Canyon. 457 Comment
  CHSC65773  Acer negundo var. californicum Vernon H. Oswald 1996-4-10 7350 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 edge of a branch of Angel Slough at the SW corner of Tract 2, Sanctuary 1. 32 Comment
  CHSC110943  Acer saccharinum L. P. Janeway 2013-3-19 11085 Butte Sacramento Valley. North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. 46 Comment
  CHSC110944  Acer saccharinum L. P. Janeway 2013-2-25 11084 Butte Sacramento Valley. North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. 46 Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CAS-BOT-BC21749  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC27564  Achillea millefolium Robert Schlising 1978-5-17 3255 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC109860  Achnatherum lemmonii L. P. Janeway 2012-6-7 10857 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC42446  Achnatherum lemmonii Lowell Ahart 1987-5-22 5663 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
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CAS-BOT-BC216464  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CDA13731  Achnatherum occidentale subsp. pubescens G. F. Hrusa, T. D. Wilfred 1997-6-27 13909 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Small colony in sandy-gravelly opening. Perennial, bunching. Comment
  CHSC33374  Achyrachaena mollis Alisa Goldman 1980-4-23 20 Butte North of Chico. 57 Comment
  CHSC56744  Achyrachaena mollis J. D. Jokerst 1980-3-26 Butte East side of Chico; 100m northeast of junction of Bruce Road and Skyway. Comment
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  SEINET11839699  Achyrachaena mollis D. K. Parker 1981-1 17 Butte Large population, ca 5 m W Hwy 99, 8.5 km N of Chico 65 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC109632  Acmispon americanus var. americanus Lowell Ahart 2013-5-20 18103 Butte Where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 398 Comment
  CHSC38502  Acmispon americanus var. americanus Vernon Oswald 1983-6-9 663 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 213 Comment
  UCD103797  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11675 Butte Chico-Hamilton road, 6 miles from Chico. 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
  CHSC3754  Acmispon brachycarpus R. L. Adams 1964-4-12 66 Butte Bidwell Park on Sacramento River, W. Sac. Ave. and River Rd. 9 mi. W. Chico. Comment
  CHSC48515  Acmispon nevadensis var. nevadensis Vernon Oswald 1987-5-31 2942 Butte Camelot Estates at the n end of Lake Concow. 621 Comment
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC20402  Aconitum columbianum D. E. Brink 1974-6-14 Butte Snag Lake, ca. 175 yds downstream from the confluence of the two outfalls of the lake. Comment
  CHSC58948  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CDA24174  Aconitum columbianum T. C. Fuller 1962-7-12 9190 Butte 2.0 miles east of Butte Meadows. 0 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  JEPS108865  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UCR51802  Adenocaulon bicolor H. F. Copeland 1928-8-18 0399 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CHSC12122  Adiantum aleuticum K. O. Grigsby 1972-4-26 1 Butte 4 mi w of Nimshew on Centerville Rd. 15 mi e of Chico on s side of road. 304 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
  UC811162  Adiantum aleuticum Mrs. R. M. Austin June 1879 Butte near Cherokee Mines Cold Canyon Comment
  CHSC39841  Adiantum jordanii Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CHSC84642  Adiantum jordanii Matt Quinn 2001-4-4 13 Butte Found along vertical bedrock wall on south side of Honey Run Creek, approximately 3/4 mile upstream of confluence with Little Butte Creek. 243 Comment
  SEINET10932926  Adiantum jordanii Mary Susan Taylor 1980-3-1 Taylor 2340 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  SEINET10966247  Adiantum jordanii Mary Susan Taylor 1976-4-4 Taylor 1059 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  CHSC52342  Aesculus californica Pauleen Broyles 1987-5-21 1055 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Scattered along banks of Singer and Pine Creeks. Comment
  JEPS115882  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  CHSC85917  Agoseris heterophylla L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7757 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.8 km north of the Spillway Boat Ramp. 296 Comment
  UC1562421  Agoseris heterophylla var. heterophylla Lowell Ahart 1990-6-16 6509 Butte Just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CAS-BOT-BC447795  Agrimonia gryposepala Clarence Quick 1940-7-20 40 -96 Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout. 2-3 miles towards Brush Creek Comment
  SEINET10942481  Agropyron intermedium Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville. 998 Comment
  CHSC100946  Agrostemma githago R. A. Schlising 1991-5-11 4659 Butte About 0.25 miles north of Gravel Pit Road, along Wheelock (=Messilla Valley) Road. 140 Comment
  SEINET10753212  Agrostis avenacea Lowell Ahart 1986-5-24 Ahart 5281 Butte On dry dark caly soil on the bottom of a large vernal pool, near the first gate to the Dean Ranch, about 1.2 mile N of the intersection of Mallott Road and Alf Road, about 2 miles NE of Sutter, Sutter Buttes 30 Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CHSC31729  Agrostis exarata L. Ahart 1977-6-16 1422 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET4344593 Image available Agrostis gigantea Unknown 2009-7-9 16006 Butte T23N, R2E, near center, upper half of section 35. On the north side of a stream, on the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC25042  Aira caryophyllea Rich Leverton 1974-3-3 Butte 5 mi n of Chico on Cohasset Hwy. 200 yards s of road on Jesse Ranch. 76 Comment
  CHSC92548  Aira caryophyllea L. P. Janeway 2005-3-10 8345 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC98974  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10934845  Aira caryophyllea A. Arthur Heller 1914-5-6 Heller 11363 Butte Marysville. Comment
  SEINET10497817  Ajuga reptans Mary Susan Taylor 1975-4-6 Taylor 434 Butte Chico. 52 Comment
  CHSC107926  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley. Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. On old gravel bar several feet from the water. 41 Comment
  CAS-BOT-BC267054  Alisma Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  SEINET257320  Allium amplectens J. L. Reveal 1988-6-3 7005 Butte Paradise 0.2 mi S of Bennett Rd along South Libby Rd onto N end of Morgan Ridge 518 Comment
  CAS-BOT-BC460736  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC39471  Allium amplectens J. P. Smith 1972-3-23 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  CHSC36902  Allium campanulatum R. A. Schlising 1980-6-10 3665 Butte NW part of county, along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. 1341 Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 Comment
  UC398901  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  RSA0118750  Allium hyalinum L. P. Janeway 2015-3-23 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC135820  Allium jepsonii B. Castro 1993-7-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  CHSC2062  Allium jepsonii R. M. Staley 1952-2-28 Butte W. Branch of Feather River. Comment
  HSC66173  Allium obtusum var. obtusum M. S. Taylor 1980-5-27 2695 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  CHSC27033  Allophyllum divaricatum Robert A. Schlising 1978-6-11 3291 Butte Along Cohasset Rd, below Cohasset, 5.5 mi NE of crossing of Mud Cr and 5.3 mi NE jct of rd to Richardson's Springs; ridge top. Comment
  CHSC63542  Allophyllum divaricatum Vernon H. Oswald 1994-4-14 6108 Butte Old railroad grade along the N. Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  CHSC50413  Allophyllum integrifolium Vernon Oswald; Lowell Ahart 1990-6-27 4328 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC36550  Amaranthus albus L. Ahart 1982-7-10 3671 Butte About 1/4 e of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS124125  Amaranthus albus Lowell Ahart 2015-10-9 20540 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  HSC97057  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  RSA713019  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and about 1 mile east of Honcut, about 12 miles south of Oroville 31 Comment
  CHSC43583  Amaranthus rudis Vernon Oswald 1983-10-10 1061 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC1027  Ammannia coccinea V. Holt 1945-10-2 Butte Butte Creek canyon. 91 Comment
  CHSC45748  Ammannia coccinea L. P. Janeway 1988-6-29 2902 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC96968  Ammannia robusta L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  JEPS119805  Ammannia robusta Lowell Ahart 2012-8-24 18429 Butte On the strand of Black Butte Reservoir (west side), about 3 miles north of the bridge across Stony Creek and the upper reaches of Black Butte Reservoir. 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
  UCD102883  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  JEPS98972  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  JEPS119625  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CHSC83913  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC37420  Amsinckia menziesii R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4004 Butte NW of Oroville and n of Thermalito Forebay, in the Campbell Hills. 106 Comment
  CDA5476  Anagallis arvensis L. Ahart 1998-6-3 8011 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC41319  Angelica californica Lowell Ahart 1985-7-9 5108 Butte Along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of Forbestown. 548 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CHSC20056  Anthriscus caucalis M. S. Taylor 1975-4-25 497 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  SEINET10547817  Antirrhinum cornutum Mary Susan Taylor 1983-1-17 Taylor 5217 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC1685  Antirrhinum vexillo-calyculatum subsp. intermedium E. Walker 1932-7-26 Butte Magalia Heights. 762 Comment
  CHSC38640  Aphanes occidentalis Vernon Oswald 1983-3-7 133 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 0.1 mi. w of the power lines. 128 Comment
  CHSC42213  Aphanes occidentalis L. P. Janeway; C. A. Janeway 1987-3-7 1953 Butte In Bidwell Park, Chico. Along North Rim Tr north-west of Horseshoe Lake. 144 Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC61215  Aphanes occidentalis Vernon H. Oswald; Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  CHSC38260  Apocynum cannabinum Vernon Oswald 1983-6-2 604 Butte Upper Bidwell Park, Chico, at the e end of Yahi Trail. 207 Comment
  UC1562405  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte ca. 1/2 mi. s.w. of Enterprise Bridge across Lake Oroville (Lake Oroville); Lake Oroville 259 Comment
  SEINET10455429  Apocynum pumilum var. rhomboideum Lowell Ahart 1985-6-17 Ahart 5047 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  UC1594591  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CAS-BOT-BC407773  Arceuthobium californicum Lowell Ahart 1988-9-4 6173 Butte dirt road, S of a branch of Last Chance Creek, about 1.5 miles SW of Bald Mountain 1005 Comment
  CHSC62509  Arceuthobium campylopodum L. P. Janeway 1993-8-21 4531 Butte Plumas National Forest, LaPorte Ranger District. Southwest end of Watson Ridge; ca 2 mi east of Bald Rock Dome. 1082 Comment
  CHSC67934  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1685 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  RSA632996  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27451 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET10449247  Arctostaphylos manzanita Mary Susan Taylor 1974-5-20 Taylor 255 A Butte Chico. Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CAS-BOT-BC24411  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Huboldt Grade, about 12 mi. from Chico. Comment
  CHSC109107  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  JEPS119509  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC1303074  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte near Forest Ranch Comment
  UC726642  Arctostaphylos mewukka A. A. Heller 1942-1-29 16356 Butte on State Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UC726686  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte on Pentz-Magalia road three mi below Paradise Comment
  CHSC108842  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  CAS-BOT-BC46718  Arctostaphylos patula F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  UCD51953  Arctostaphylos truei John Thomas Howell 1975-6-15 51083 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CDA42419  Arctostaphylos viscida subsp. viscida D. G. Kelch 2012-9-19 12 .362 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  JEPS118321  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 47 Comment
  UC1121438  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-6-20 89 Butte 1 1/2 mi se Paradise; Chico Quadrangle Comment
  UC535028  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte about 12 mi from Chico; Humboldt Grade Comment
  CHSC30068  Arenaria kingii var. glabrescens R. A. Schlising; R. Banchero 1980-7-31 3950 Butte Above Inskip and Snag Lake on north slopes of Snow Mountain. 1950 Comment
  UCD56476  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut, La Porte Road. Comment
  SEINET8521980  Aristida oligantha Kelly W. Allred 1991-1 5480 Butte along Honcut Road, 2 miles north of junction with Palermo Road, in annual valley grassland 91 Comment
  CHSC90617  Aristolochia californica Richard Ernenwein 1993-4-20 143 Butte Keefers Grist Mill monument site, Rock Creek Dr., c. 0.3 mi e of jct. of Rock Creek Rd. with Cohasset Hwy at Butte Lumber Co. mill, ca. 3 mi e of Chico airport. Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  UCD137812  Aristolochia californica Kathy Corson 1969-4-6 11 Butte Stillsen Canyon Creek bottom, past the garbage dump 9 miles east of Chico. Comment
  UC573399  Arnica dealbata P. L. Johannsen 1936-7-16 928 Butte Bolt Creek Lassen National Forest, Paynes Creek Quad. 1432 Comment
  CAS-BOT-BC295843  Arnica dealbata Clarence R. Quick 1966-7-9 66 -46 Butte 50 yds. s. of campsite, Section Corner Meadow, Coyote Gap-Four Trees road, ca. 5 m. east of Pulga 1463 Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC47851  Artemisia biennis Vernon H. Oswald 1989-12-6 4030 Butte Arroyo Chico. Pine Creek Landing Site of Bidwell River Park, west of Chico. 42 Comment
  CHSC20901  Artemisia douglasiana M. S. Taylor 1975-8-31 894 Butte Ca. 50 ft S of Humboldt Rd, on Ernies Island in Butte Creek, ca. 1/2 mi E of Butte Meadows. 609 Comment
  CHSC40363  Asclepias cordifolia Lowell Ahart 1985-6-17 5063 Butte 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC44270  Asclepias eriocarpa Vernon Oswald 1988-6-4 3355 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 67 Comment
  CHSC108319  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  POM180847  Asclepias fascicularis H. F. Copeland 1923-7-9 s.n. Butte Mud Creek Ranch Comment
  CDA14078  Asclepias speciosa G. F. Hrusa, T. D. Wilfred 1997-7-3 13961 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  CHSC28515  Aspidotis densa M. S. Taylor; J. D. Jokerst 1979-10-13 2263 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC28625  Aspidotis densa M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  OBI74995  Aspidotis densa Hannah M. Fugle 2011-1-17 5 Butte Magalia, ca. 400 ft E of Coutelenc Rd, ca. 0.1 mi up Coutelenc rd from Skyway Rd 762 Comment
  UC474223  Aspidotis densa H. F. Copeland 1920-8-2 200 Butte Jonesville 1600 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
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  HSC93425  Astragalus gambelianus L. Ahart 1995-5-30 7577 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  SEINET10841188  Astragalus gambelianus Lowell Ahart 1985-5-10 Ahart 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the Hwy on a dirt road. 975 Comment
  UC474218  Athyrium filix-femina var. cyclosorum H. F. Copeland 1928-8-18 1017 Butte neighborhood of Jonesville (woods near Butte Creek) 1600 Comment
  CHSC13903  Athysanus pusillus K. Alexander 1968-3-23 28 Butte On the n side of Keefer Rd. ca. 0.9 mi e of the junction of hwy 199e, Keefer Rd., Lassen R. and Rowles Rd. Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  CHSC50024  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte Banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS90672  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road and on s side of Rutherford Road, just e of headquarters complex, 1.75 mi w of Pennington Road); Gray Lodge Wildlife Management Area 19 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  UC1191306  Atriplex heterosperma Herbert L. Mason, Verne Grant 1946-8-14 13034 Butte canal near big pond Sacramento Outing Club (Butte Sink); canal nr big pond on Sacramento Outing Club, Butte Sink Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC42851  Avena barbata Lowell Ahart 1987-5-6 5548 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  CHSC39420  Avena fatua J. D. Jokerst 1984-4-7 1968 Butte Along the edge of Cherokee Rd. Top of North Table Mountain at the mesa's east edge. Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  UC577598  Avena fatua C. G. Albertus 1933-6-6 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  CHSC34148  Azolla filiculoides L. Ahart 1981-9-27 3214 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo R, ca. 4 mi ne of Palermo. 80 Comment
  CHSC46858  Azolla microphylla Vernon Oswald 1989-9-6 3990 Butte Hwy 162 just e of the railroad crossing at the Rice Experimant Station, ca. 2.5 mi sse of Richvale. 30 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  CHSC38326  Baccharis salicifolia Vernon H. Oswald 1983-5-2 410 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  UC172377  Balsamorhiza sagittata unknown Butte Jonesville Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CHSC36680  Barbarea orthoceras R. E. Preston 1982-6-25 317 Butte On the bank of Kanaka Cr; in n meadow at site of Powellton, ca. 3 mi nw of Stirling City. 1097 Comment
  SEINET10907330  Barbarea orthoceras Mary Susan Taylor 1981-5-14 Taylor 3730 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  JEPS97414  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  CHSC92571  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC46283  Boechera arcuata Vernon Oswald 1989-5-25 3785 Butte Railroad between Pulga and Mayaro. On the river side of the RR between Dogwood and Camp Creeks. 438 Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  CHSC20332  Boechera breweri subsp. breweri J. Pitts 1973-4-25 Butte Coal Canyon. Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CAS-BOT-BC14291  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  SEINET10453128  Boisduvalia densiflora Mary Susan Taylor 1975-6-25 Taylor 800 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  JEPS117722  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  RSA739617  Brachypodium distachyon L. P. Janeway, B. Castro 2007-5-19 8980 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 99 Comment
  SBBG128788  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte upper Bidwell Park, Chico, SE facing slope +/- overlooking Bear Hole on Big Chico Crk, between Middle Trail and Upper Trail 166 Comment
  SEINET10507663  Brachypodium distachyon Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4062 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
  SEINET10448434  Brassica geniculata Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5149 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
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  JEPS115834  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles 60 Comment
  CHSC81589  Briza maxima D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  JEPS117274  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  SEINET10507327  Briza maxima Mary Susan Taylor 1980-5-24 Taylor 2745 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC145537  Briza minor Lowell Ahart 1980-5-17 2279 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC56622  Briza minor Andy Winkler 1980-4-27 9 Butte Small population ca 300 yds southwest of the Hwy 99 intersection with Broyles Road. Comment
  CHSC81588  Briza minor D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  SEINET10570589  Brodiaea capitata Mrs. R. M. Austin 1896-3-1 Austin 40 Butte Little Chico Creek. Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  UC768718  Brodiaea coronaria subsp. coronaria R. F. Hoover 1936-5-20 1154 Butte 10 mi sw Oroville Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC75413  Brodiaea minor Jennifer Slater 1997-4-20 27 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC1303078  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte Butte Meadows Comment
  POM109800  Brodiaea minor C. C. Bruce 1897-04 2123 Butte Oroville road. Comment
  CHSC116566  Brodiaea nana B. Castro; Robin Carter 2016-4-14 2128 Butte Sacramento Valley. Ca 1.9 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.2 mi SSW of the Oriville Airport, off N edge of SE portion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  RSA32823  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte Ten miles N of Chico. Comment
  SEINET10534142  Brodiaea purdyi R. M. Austin Austin 32 Butte Sutton House Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  JEPS120851  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown Comment
  RSA712796  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  RSA700275  Bromus carinatus L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1913 Comment
  JEPS94726  Bromus commutatus Lowell Ahart 1998-6-30 8015 Butte about 7 air mi n Oroville (sw of the ione oak tree, w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS115993  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  UCD169395  Bromus diandrus Lowell Ahart 2005-4-14 11707 Butte North of Spruce Street, Gridley; south of the railroad bridge, east of the railroad tracks. 28 Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CHSC30297  Bromus hordeaceus M. S. Taylor 1980-5-27 2643 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC38796  Bromus hordeaceus Vernon Oswald 1983-4-10 321 Butte Upper Bidwell Park, Chico, on the n side of the canyon at Salmon Hole. 188 Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA691015  Bromus japonicus L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzinita Avenue, Chico. 122 Comment
  CAS-BOT-BC162455  Bromus laevipes John Thomas Howell 1955-6-14 30459 Butte Magalia. 731 Comment
  CHSC101463  Bromus laevipes L. P. Janeway; Sarah Starkey 2009-7-13 9856 Butte Northern High Sierra Nevada. Upper end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 0.3 km southeast of Concow Road near the quarry. 978 Comment
  CHSC102428  Bromus laevipes Lowell Ahart 2009-6-19 15947 Butte On dry rocky soil, on the north side of Ten Mile House Road, just north of Guardian's 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
  UCD58894  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  CHSC27568  Bromus madritensis subsp. madritensis Robert Schlising 1978-5-17 3260 Butte Magalia, serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS117882  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  SEINET10514795  Bromus racemosus Lowell Ahart 1970-5-12 Ahart 52 Butte Ahart Ranch. On dry soils, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CAS-BOT-BC161963  Bromus rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  UC1609516  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  CHSC44173  Bromus suksdorfii V. Oswald; L. Ahart 1988-7-26 3626 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2042 Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 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
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CHSC46116  Calandrinia ciliata L. P. Janeway 1989-1-27 3171 Butte SE-facing rocky slope just above the spur ridge overlooking the Diversion; cyn of Big Chico Cr 3.1 mi E of Wildwood Ave via Upper Park Rd. 213 Comment
  UC1564786  Calandrinia ciliata V. Oswald and L. Ahart 1989-6-27 3835 Butte Humbug Road at Butte Creek House (ca 3.3 mi (air) se of Jonesville); Butte Creek 1767 Comment
  CHSC1359  Calandrinia ciliata var. menziesii E. Dolittle 1929-2-26 Butte Near Chico. 57 Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  CHSC30891  Callitriche heterophylla var. bolanderi J. D. Jokerst 1979-3-20 1150 Butte Top of North Table Mt., ca 0.5 mi N of the jct. of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC38282  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-4-10 318 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  UCSC000453  Callitriche verna E. B. Copeland 1932-1 s.n. Butte Jonesville Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  CHSC50436  Calochortus coeruleus Vernon Oswald 1990-6-14 4293 Butte Logging road (T-line) just southwest of High Rock Ravine, ca. 1.5 miles west of Bald Mtn Lookout. 1304 Comment
  CHSC27985  Calochortus leichtlinii M. S. Taylor 1978-7-18 1702 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC34484  Calochortus luteus J. D. Jokerst 1978-5-21 127 Butte 200 met w of Hwy 32 on top of ridge. 365 Comment
  CHSC34488  Calochortus luteus J. D. Jokerst 1979-5-21 252 Butte NE corner of jct Pentz-Magalia Hwy and Pentz Rd. Comment
  CAS-BOT-BC437678  Calochortus luteus Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  POM215697  Calochortus luteus D. D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor. Comment
  CHSC2832  Calochortus monophyllus David Prall 1965-4-16 21 Butte Growing along Helltown Canyon Rd. 1 mile north from Humbug Rd. 228 Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC90197  Calochortus monophyllus S. M. Fleshman 1989-5-1 20 Butte Ca. 1 mi se of junct. of Cohasset and Vilas roads ca. 12 mi e of Chico. 579 Comment
  SJSU9969  Calochortus monophyllus G. L. Baker 1968-5-4 71 Butte near Nimshew N of Megalia 670 Comment
  CAS-BOT-BC492597  Calochortus monophyllus H. C. Cantelow 1939-5-19 2440 Butte Old rd. to Quincy 23.2 mi. E of Oroville Comment
  SEINET12053995  Calochortus monophyllus Unknown 4 s.n. Butte no further locality Comment
  CHSC25014  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville. 1550 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
  CAS-BOT-BC494321  Calochortus tolmiei C. C., Mrs. Bruce 1898-5-1 2407 Butte Mountains Comment
  JEPS95625  Calycadenia fremontii Lowell Ahart 1994-10-8 7551 Butte 1 mi e of Chico Bidwell Park; Chico, North Rim Trail 152 Comment
  CAS-BOT-BC273290  Calycadenia fremontii G. D. Carr 1978-7-7 792 (1978) Butte NE of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave 232 Comment
  RSA789311  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca 10 mi NW of Chico and ca. 1/2 mile S of Broyles Rd fairly extensive pop. 61 Comment
  UC1971684  Calycadenia fremontii 1978-7-7 792 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave 232 Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CAS-BOT-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC106125  Calycadenia oppositifolia David D. Keck 1930-7-25 975 Butte Hurleton, ten miles east of Oroville, on Forbestown Road, eastern Butte County. 487 Comment
  CDA13908  Calycadenia oppositifolia G. F. Hrusa, T. D. Wilfred 1997-7-3 13989 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC30940  Calycadenia oppositifolia L. Ahart 1980-7-4 2448 Butte Near the Oak Grove Cemetary, ca. 1/2 mi SE of Hurleton. 600 Comment
  RSA584737  Calycadenia oppositifolia J. T. Howell 1955-6-15 s.n. Butte West Branch of North Fork of Feather River. 183 Comment
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  CAS-BOT-BC270887  Calycadenia spicata L. P. Janeway; B. Castro; R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the SE side of Neal Road opposite the upper part of the Butte County Land Fill, ca. 1.5 miles NE of Highway 99 76 Comment
  CHSC34793  Calycadenia truncata M. S. Taylor 1981-6-19 3960 Butte North side of Hwy 70 at NW end of Pulga bridge. Ca. 20 mi NE of Oroville. 487 Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CHSC33651  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-6-13 3143 Butte Along the Skyway NE of De Sabla, about 0.2 mi NE of junction with Humbug Road. Comment
  CHSC92549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8373 Butte Northern High Sierra Nevada. Plumas National Forest; on Saw-mill Peak, 350 m east of the Lookout Tower; 2.2 km east of Magalia. 991 Comment
  RSA716320  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  POM219251  Calystegia malacophylla H. F. Copeland 1930-7-20 1389 Butte Jonesville. Comment
  CHSC94025  Calystegia occidentalis subsp. occidentalis R. D. Fischer 2005-4-30 735 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants on a west facing, brushy hillside trail. 518 Comment
  CHSC20350  Calystegia occidentalis subsp. occidentalis L. V. Ritter 1969-5-5 306 Butte Ca. 2 mi. W of Cohasset, ca 10 yds. S of Cohasset Highway. Comment
  RSA4474  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  UC398738  Camelina microcarpa Katharine Brandegee Butte Peavine Comment
  CAS-BOT-BC160852  Camissonia tanacetifolia subsp. tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Hiwy 97, Butte Creek Comment
  SEINET10463111  Campanula prenanthoides Johannsen 1936-7-28 JOHANNSEN 967 Butte 2.25 MI N OF JUNCT. BUTTE & SECRET CREEKS. T25N R3E SEC 12 PAYNES CREEK QUAD 1280 Comment
  CAS-BOT-BC37882  Cardamine oligosperma Lowell Ahart 1980-3-26 2062 Butte Near Hurleton. 600 Comment
  CHSC87200  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  RSA767798  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  RSA769678  Cardaria chalepensis L. Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley. 27 Comment
  CHSC112103  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  JEPS117517  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico 71 Comment
  SJSU15296  Carex Lisa Morton 2002-3-31 18 Butte Upper Bidwell Park along Middle Trail 50 Comment
  CAS-BOT-BC18213  Carex Lowell Ahart s.n. Butte Honcut. Peter Ahart Ranch. Comment
  SEINET10644416  Carex Lowell Ahart 1982-4-1 Ahart 3529 Butte On wet soil in small meadow a little s of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. Only a few plants were seen. Yellow Pine Forest. 750 Comment
  UC8055  Carex W. H. Brewer 1470 Butte near Chico Comment
  CHSC49385  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-16 3029 Butte Large meadow at head'waters' of Willow Cr. 1935 Comment
  CHSC113418  Carex angustata Lowell Ahart 2014-7-13 19641 Butte Dry west edge of a large wet meadow (some bog), about 80 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC84927  Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  UCD140104  Carex angustata Robert E. Preston 1982-7-16 338 Butte Crane Valley, on streambank. 1584 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  SEINET10586772  Carex bolanderi Lowell Ahart 2010-6-12 Ahart 16796 Butte T22N, R2E, northwest 1/4 Section 35. About 150 yards east of Ten Mile House Road, about 3.4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC102570  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Sacramento Valley. Campus of California State University, Chico; between Merriam Library, the new student services building, and Warner Ave. 59 Comment
  CHSC44105  Carex cusickii L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2510 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CHSC115865  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands. 1000 Comment
  CAS-BOT-BC34955  Carex densa L. P. Janeway 1988-6-25 2855 Butte Ridgetop above Clark Road (Hwy 191) 4.9 miles N of Durham-Pentz Road. 381 Comment
  CHSC52855  Carex densa L. P. Janeway 1989-5-17 3245 Butte Along Lower Forbestown Rd 0.1 mi N of Forbestown Rd. 777 Comment
  SEINET10649718  Carex densa Lawrence P. Janeway 1987-4-14 Janeway 2002 Butte T19N, R3E, Oroville Quad, NW 1/4 of Sec 1. Thermalito Forebay State Park, Oroville. Along creek on north side of picnic area, ca 200 feet from the lake. 70 Comment
  JEPS115983  Carex deweyana subsp. leptopoda Lowell Ahart 2009-6-3 15828 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC40661  Carex feta J. D. Jokerst 1984-5-19 2025 Butte Perennial seepage along the edge of Highway 70 directly across from a roadside rest area along a small dirt road that parallels Hwy 70. Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC47062  Carex feta L. P. Janeway 1989-5-17 3246 Butte High in cyn of S Fk Feather River; along edge of road to Forbestown Diversion Dam 1.4 mi E of Forbestown Rd. 853 Comment
  JEPS121929  Carex fracta Lowell Ahart 2014-7-16 19678 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC21239  Carex fracta L. P. Janeway 1988-6-25 2862 Butte The Carices of Butte County. Near Coon Creek and near Bull Hill Road 1.0 mile from Skyway. 1554 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC110238  Carex hirtissima L. P. Janeway 2012-6-2 10831 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC42828  Carex hirtissima L. P. Janeway 1987-5-10 2045 Butte Mdw at jct of Skyway and Doe Mill Rd/Humbug Rd, just N of Da Sabla Reservoir. 838 Comment
  CHSC83936  Carex hirtissima L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Northern Sierra Nevada Foothills. Near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. Meadow. 280 Comment
  CHSC52914  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3062 Butte Upper canyon of Philbrook Creek, 0.7 mi W of the pass. 1920 Comment
  JEPS117658  Carex integra Lowell Ahart 2010-9-21 17218 Butte Open meadow like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC41296  Carex jonesii S. C. Morey 1983-7-21 491 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52918  Carex jonesii L. P. Janeway; R. A. Schlising 1988-8-2 3151 Butte Along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground; ca 1 1/2 air mi NW of Butte Meadows. 1143 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  CHSC109968  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir. Northern Sierra Nevada Highlands (n SNH). 1025 Comment
  UCR246363  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Northern Sierra Nevada Highlands (n SNH), Moreville Ridge Road [Forest Road 20N03 ], 0.4 road miles N of dam on Lost Creek Reservoir 1025 Comment
  JEPS117661  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  SEINET6190661 Image available Carex macloviana subsp. subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville; Jones Creek 1500 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
  CHSC111389  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Near a small drainage, north of the meadow, southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 268 Comment
  CHSC42385  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  SEINET10971821  Carex multicaulis Mary Susan Taylor 1981-5-13 Taylor 3696 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
  CHSC45042  Carex nudata Vernon Oswald 1984-4-8 1118 Butte Upper Bidwell Park, Chico, in Chico Creek between Parking Area R and Brown's Hole. 170 Comment
  CHSC49386  Carex pachystachya L. P. Janeway 1988-6-14 2769 Butte Along W Branch Butte Cr at crossing of road to Ewalt Camp, 1.9 mi W from Hwy 32. 922 Comment
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC102213  Carex rossii L. P. Janeway 2009-11-14 9962 Butte High Cascade Range. North side of Scotts John Creek at corssing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). 1740 Comment
  CHSC76325  Carex stipata var. stipata G. F. Hrusa; T. D. Wilfred 1996-7-9 13143 Butte Northern California; Plumas National Forest. On shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 1175 Comment
  CAS-BOT-BC116746  Carex subfusca L. P. Janeway; C. A. Janeway 1986-8-31 1807 Butte Along Scotts John Cr at rd 26N27 crossing 3 mi from Humboldt Rd. 1737 Comment
  CDA33157  Carex subfusca T. C. Fuller 1963-7-12 9187 Butte Butte Creek; road to Jonesville, 2 miles east of Butte Meadow. 0 Comment
  CHSC88167  Carex utriculata Lowell Ahart 2004-8-2 11326 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC113465  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte In a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  CHSC40888  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC115360  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte Steep east road cut, along Oregon Gluch Road, about one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  JEPS119872  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  LA209084  Castilleja affinis subsp. affinis E. B. Copeland; 1930-7-12 Butte above Jonesville 2100.0 Comment
  CAS-BOT-BC249591  Castilleja applegatei subsp. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia 731 Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC44359  Castilleja attenuata Lowell Ahart 1988-3-27 5945 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  SFV10459  Castilleja attenuata M. L. Vincent 1965-4-16 635 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  UC726755  Castilleja campestris subsp. campestris A. A. Heller 1940-4-20 Butte about 1 mi s Oroville Y 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
  CHSC90143  Castilleja exserta subsp. exserta Andy Winkler 1980-4-15 13 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  CHSC4255  Castilleja lacera J. E. Bowlin 1967-4-14 32 Butte 3.4 mi. E of corner of Keefer Rd. and Cohasset, Chico. Comment
  POM181782  Castilleja miniata H. F. Copeland 1927-09 253 Butte Jonesville. Comment
  CHSC81312  Castilleja tenuis J. Trizzino 2001-4-25 51 Butte Humbug Road, 6 mi north of Steel Bridge, west facing hillside. 914 Comment
  CHSC3611  Ceanothus cuneatus R. Jaegel 1966-2-21 29 Butte Collected 10 miles east of Durham Cemetary, in a meadow on the floor of the valley. Comment
  SEINET10493632  Ceanothus cuneatus Mary Susan Taylor 1973-1 Taylor 56 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12210968  Ceanothus cuneatus Unknown 1977-1 14 Butte 4 mi N of Paradise and 100 yds N of Magalia 732 Comment
  CHSC77439  Ceanothus cuneatus var. cuneatus Tim Stofer 1997-4-13 11 Butte This bush was located on the west side of the trail 100 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  RSA15055  Ceanothus integerrimus var. macrothyrsus Daniel Cleveland 1882-07 s.n. Butte Sultant House. Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
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May 17 2021
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CHSC48835  Ceanothus prostratus Vernon Oswald 1984-4-16 1157 Butte Doon Campground on the Skyway, 1.0 mi e of Coutelenc Rd. at Lovelock. 853 Comment
  RSA107845  Ceanothus prostratus L. S. Rose 1955-6-14 55098 Butte De Sabia. 732 Comment
  UC725531  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte Comment
  CHSC100800  Ceanothus velutinus R. A. Schlising; L. Janeway 1988-7-1 4547 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC6012  Cedrus deodara M. MacArthur 1968-6-19 252 Butte Lawn in front of CAC and next to NE end of Library bld., Chico State College. 60 Comment
  CHSC108969  Cedrus libani var. libani Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17816 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC281946  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte 8 miles N of Oroville Comment
  CDA18839  Centaurea diffusa M. Stewart, Riley, Rick Keck 1997-8-12 PDR 1145796 Butte along N/S Humboldt Rd., 1.2 miles west of USFS CDF fire station, Butte Meadows. 0 Comment
  CAS-BOT-BC272095  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  CHSC116109  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 A Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC295  Centaurea solstitialis E. Walker 1932-6-21 Butte Durham. Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  SEINET10454834  Centaurium venustum Mary Susan Taylor 1980-5-15 Taylor 2632 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UC1594735  Centromadia fitchii Lowell Ahart 1992-9-9 6921 Butte about 0.5 mi se Kunkle Reservoir (Lake Oroville below the high water line); Lake Oroville 243 Comment
  CAS-BOT-BC288533  Centromadia fitchii John Thomas Howell 1974-9-19 50884 Butte Feather River Highway bridge at West Branch Feather River 304 Comment
  CHSC66662  Centromadia parryi subsp. rudis Vernon H. Oswald; Lowell Ahart 1996-7-22 8096 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Sanctuary II. 33 Comment
  CHSC27062  Centunculus minimus Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC69709  Centunculus minimus Lowell Ahart 1997-10-12 7917 Butte Along North Honcut Creek, about 2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  CHSC48251  Cerastium fontanum subsp. vulgare Vernon Oswald 1984-5-16 1187 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek at Five Mile Recreation Area. In lawn. 82 Comment
  CHSC75264  Cerastium fontanum subsp. vulgare Lowell Ahart 1999-5-24 8079 Butte In the lawn, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC98979  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  JEPS120146  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte About 70 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UCD137763  Ceratophyllum demersum Herbert L. Mason; Verne Grant 1946-8-8 12994 Butte Butte Sink. Sanford Slough on Tule Gun Club. Comment
  CHSC33360  Cercis occidentalis Steve Alvarez 1980-3-24 19 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  SEINET12161338  Cercis occidentalis Unknown 1977-1 29 Butte E side of Hwy 32 at Tenmile House. 9.2 mi NE of Chico. Paradise Quadrangle, see comments 366 Comment
  CAS-BOT-BC137001  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 s.n. Butte 3 miles north-west of Bangor, along N. Honcut Creek 100 Comment
  RSA794797  Cercocarpus betuloides var. betuloides L. Ahart, John Dittes 2009-3-20 15518 Butte On south side of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 200 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
  CHSC30415  Chaenactis glabriuscula var. heterocarpha R. Banchero 1980-5-4 50 B Butte N of Hwy 70 crossing of Lake Oroville St. Rec. Area, 1/4 mi north of jct Lunt Rd and Hwy 70. 609 Comment
  CDA7374  Chamaemelum fuscatum L. Ahart 2004-4-1 10732 Butte On the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. Comment
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  RSA755772  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-8-15 16284 Butte Road edges, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC30762  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1978-9-8 1887 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC40901  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-11-7 5230 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  CHSC94271  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-7-16 12964 Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UC1122498  Chamerion angustifolium subsp. circumvagum P. L. Johannsen 1936-7-20 951 Butte 1 1/2 mi s Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC426921  Chamerion angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  UC600557  Chamerion angustifolium subsp. circumvagum H. F. Copeland 1928-8-14 443 Butte on ridge above Jones Creek; Jonesville 1828 Comment
  CAS-BOT-BC69449  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CDA14058  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1997-5-1 13705 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  CHSC60940  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM196123  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  SEINET10966199  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3454 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  JEPS93939  Chimaphila umbellata Vernon H. Oswald and Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi n of Four Trees-Coyote Gap Road Upper Wildcat Creek; USFS 25N95 to Upper Wildcat Creek 1463 Comment
  JEPS50845  Chlorogalum angustifolium H-M. Beard 1967-6-26 65 .1217 Butte Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  CAS-BOT-BC252670  Chorizanthe membranacea Lowell Ahart 1984-6-8 4678 Butte Along the dirt road 1/10 mile north-west of the water tower, above the genterator about 1 mile east of teh Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  JEPS117238  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
  CAS-BOT-BC252836  Chorizanthe polygonoides var. 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
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  SEINET10454841  Cicendia quadrangularis Mary Susan Taylor 1980-5-15 Taylor 2631 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CAS-BOT-BC279859  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC27910  Circaea alpina subsp. pacifica M. S. Taylor 1978-7-19 1741 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC44043  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-26 2304 Butte Edge of pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  SEINET10939934  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4739 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
  UC328923  Circaea alpina subsp. pacifica unknown Butte near Camp Colby Comment
  UCD130510  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  JEPS115722  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
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC725467  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte e Chico (back of the Salmon Hole on creek); Chico Creek Comment
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UC1071957  Clarkia biloba subsp. brandegeeae H. and M. Lewis 1947-6-11 394 Butte 7.0 mi nw Bangor (on road to Oroville) Comment
  CHSC35135  Clarkia concinna subsp. concinna R. Schlising; R. Banchero 1980-6-5 3640 Butte N of Oroville along Hwy 70, ca 3 miles S of Pulga crossing of the Feather River. 640 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  UC725459  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte 22 mi from Oroville (on the Feather River Highway, just e of Jarboe Pass) 609 Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  CHSC88639  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-29 354 Butte Plumas National Forest. 4WD Road off Concow Road. 853 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, 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 234 Comment
  CAS-BOT-BC171877  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson; Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road 451 Comment
  CAS-BOT-BC6941  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  UC1143186  Clarkia mildrediae H. and M. Lewis, F. Vasek 1950-6-30 760 Butte 2.0 mi s Arch Rock (Hwy.24); Feather River Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10939935  Clarkia mildrediae Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4745 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
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CHSC71151  Clarkia mildrediae subsp. lutescens L. P. Janeway 1994-7-7 4684 Butte South side of ridge between Haphazard, Baker, and Foreman Creeks; 3.7 road mi west of Oroville-Quincy hwy and Rogers Cow Camp via Roads 23N15, 22N66X, and 22N40X. Southwest-facing road cutbank and above. 1158 Comment
  CAS-BOT-BC163353  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  CAS-BOT-BC163647  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardson Springs Comment
  CAS-BOT-BC163652  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37599 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  SEINET10453161  Clarkia purpurea subsp. quadrivulnera Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4036 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
  CHSC1111  Clarkia purpurea subsp. viminea M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC164790  Clarkia rhomboidea H. Lewis; M. Lewis 1951-5-1 824 Butte Rd. from Oroville to Magalia, 1.65 mi. S. of Rd. to Paradise Comment
  CHSC59114  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill. 512 Comment
  CHSC59118  Clarkia rhomboidea L. P. Janeway 1991-6-1 3985 Butte Northwest-facing cut-bank of Dark Canyon Road 3.3 mi south of Big Bend Road/Parkhill. 304 Comment
  CAS-BOT-BC164785  Clarkia rhomboidea A. A. Heller 1921-5-30 13552 Butte Along the road toward Cohassett Comment
  RSA0059925  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  SEINET10841119  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  CAS-BOT-BC439426  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-12 5644 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC31194  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-4-1 2418 Butte In deep shade in moss over rocks, along s side of Butte Creek, ca. 1/4 mi downstream (w) of Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CAS-BOT-BC439432  Claytonia parviflora subsp. parviflora A. A. Heller 1927-4-26 s.n. Butte In Bidwell Park east of Chico Comment
  SEINET7067162  Claytonia perfoliata subsp. mexicana A. G. Vestal 1947-5-1 s.n. Butte Meadow on Little Chico Creek east of Route 32 northwest of Butte Meadow. Coordinate datum: NAD27. Comment
  CHSC1379  Claytonia perfoliata subsp. perfoliata C. Durbrow 1938-3-10 Butte W. of Chico. 51 Comment
  JEPS115238  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  RSA469284  Claytonia rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville. 1524 Comment
  CAS-BOT-BC443764  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC45389  Claytonia rubra subsp. rubra Vernon Oswald 1984-5-9 1177 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Loma). 1158 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
  CHSC52782  Clematis lasiantha Neal Schaeffer 1982-4-18 10 Butte Between Pentz Rd and Kunkle Reservoir, ca. 20 m from road, 50 m n of reservoir access road. 450 Comment
  CHSC3817  Collinsia sparsiflora L. E. Dunkel 1965-2-23 1 Butte Along road bank ca. 200 yards e of covered bridge, on centerville road of Butte Canyon. 54 Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  POM70644  Convolvulus arvensis C. C. Bruce 1897-05 2040 Butte Butte Creek. Comment
  JEPS6678  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e of Oroville (in the Quercus Douglasii Belt) Comment
  CHSC11902  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  UC202363  Cornus sericea subsp. sericea H. M. Hall July 1914 Butte Butte Creek near Jonesville; Butte Creek 1554 Comment
  UCD117262  Cornus sessilis Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CDA1914  Cortaderia selloana L. Ahart 2000-9-2 8678 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  UC854991  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville Sierra Nevada, Jonesville 1676 Comment
  CAS-BOT-BC401859  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  JEPS107341  Cotula australis Lowell Ahart 2005-4-2 11680 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
  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
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CAS-BOT-BC427916  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC44954  Crassula connata Pauleen Broyles 1988-3-12 1100 Butte Between Reservoir and Singer Creek. The Nature Conservancy Vina Plains Preserve. Comment
  JEPS117405  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CAS-BOT-BC190091  Crypsis schoenoides Lowell Ahart 1982-7-10 3672 Butte Sierra Nevada. On bottom of a dry duck pond, ca. 0.25 mile southeast of Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CAS-BOT-BC190168  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte About 0.1 mile south of the clay burrow for Oakville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  UCD59960  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  RSA4225  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  UC1564785  Cryptantha affinis V. Oswald and L. Ahart 1989-6-27 3820 Butte ca 3.3 (air) mi e Jonesville (ridge e of Scotts John Creek) 2042 Comment
  CHSC58256  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 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
  POM64246  Cryptantha flaccida E. B. Copeland 1903-5-2 3253 Butte Chico Comment
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Jan 23 2011
  SEINET10497275  Cryptantha flaccida Lowell Ahart 1985-5-6 Ahart 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC31551  Cryptantha rostellata L. Ahart 1972-5-8 101 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC600569  Cryptogramma acrostichoides E. B. Copeland 1930-7-12 Butte Jonesville, Upper Butte Creek area Jonesville 1800 Comment
  CHSC3012  Cryptomeria japonica Carl Pejsa 1958-4-19 30 Butte Bidwell Park Forestry Station. Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SEINET10531479  Cupressus macnabiana Lowell Ahart Ahart 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. Comment
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  SEINET10496611  Cuscuta campestris Lowell Ahart 1983-9-19 Ahart 4455 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  SEINET12122113  Cymopterus terebinthinus var. californicus R. A. Schlising 1980-1 3666 Butte N part of county, along Humboldt Rd, 1.9 mi NE of junction with Hwy 32 at Lomo, Carpenter Ridge Comment
  UC600449  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC11331  Cynosurus echinatus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  CHSC6129  Cynosurus echinatus E. Parreno 1968-5-12 102 Butte Ca. 50 m from Chico Creek in Upper Bidwell Park downstream from Alligator Hole, Chico. Comment
  CHSC85160  Cyperus difformis John Dittes 2003-10-8 849 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  SEINET9781676 Image available Cyperus difformis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC114737  Cyperus difformis Lowell Ahart 1981-9-19 3187 Butte Cresta Power House 167 Comment
  SEINET8756313 Image available Cyperus difformis J. M. Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CAS-BOT-BC114597  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-12 1919 Butte In rocks, gravel and sand on the N side of North Fork Feather River at Pulga 426 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
  OBI49299  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi E of Honcut 137 Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  UC1100514  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13022 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  UC1100518  Cyperus erythrorhizos Herbert L. Mason 1945-9-19 12738 Butte Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  JEPS97341  Cyperus flavescens Lowell Ahart 1995-8-19 7618 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC43783  Cyperus fuscus Vernon Oswald 1983-8-19 1005 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. Growing at the edge of Chico Creek. 91 Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West 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
  CHSC76301  Cyperus niger Lowell Ahart 1999-9-21 8274 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78281  Cyperus niger Lowell Ahart 2000-6-17 8489 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET11268266  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville.; 0 43 Comment
  CAS-BOT-BC114081  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CHSC59011  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS119891  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  JEPS64114  Cyperus squarrosus H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UC144668  Cyperus squarrosus Dr. E. B. Copeland 1903-7-27 3489 Butte Chico Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  SEINET10937953  Cystopteris fragilis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4130 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
  CHSC28140  Damasonium californicum J. D. Jokerst 1979-5-6 215 Butte Ditch. Cox Ln, 0.8mi w. of intersection with Palermo Honcut Hwy. Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 Comment
  CDA34740  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte On the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC41919  Danthonia californica var. americana Lowell Ahart 1983-8-16 4291 Butte Near a bog, near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC43128  Danthonia californica var. americana Robert Banchero 1981-7-19 610 Butte Ca 0.6 mi e of Balt Mt look-out tower, on Keyser Creek. 1682 Comment
  SEINET10598269  Danthonia californica var. americana Quick 1965-7-25 QUICK 65 -18 Butte Swampy alder thicket below spring. Section Corner Meadow, Coyote Gap-Four Trees Road. Comment
  CHSC110036  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. 79 Comment
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  CHSC76402  Datisca glomerata Lowell Ahart; Vernon H. Oswald 1999-10-3 8289 Butte 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
  SEINET10840961  Daucus pusillus Mary Susan Taylor 1980-6-14 Taylor 2882 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC24644  Delphinium gracilentum S. Deaton 1976-4-23 34 Butte 1 3/4 mi n of Feather Falls parking lot and 20 ft down s slope of Falls trail. 853 Comment
  CHSC32756  Delphinium gracilentum J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte S side of Olive Highway, 0.4 mi SW of its junction with Forbestown Rd (ca 6.0 mi E of Oroville). Comment
  CHSC3804  Delphinium gracilentum L. E. Dunkel 1965-3-30 11 Butte South road ascending Table Mtn., near Oroville. 243 Comment
  CHSC56766  Delphinium gracilentum R. A. Schlising 1981-6-16 4088 Butte Cohasset, e of KPAY radio tower (1.1 mi e of junction Cohasset Road on Vilas Road) at West Branch of Mud Creek. 975 Comment
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  CAS-BOT-BC8564  Delphinium hansenii C. C., Mrs. Bruce 1897-6-1 1913 Butte unspecified Comment
  RSA0118757  Delphinium hansenii subsp. hansenii Lawrence P. Janeway 2016-5-5 11941 Butte Cascade Range Foothills. Along Humboldt Road 2.3 road-km northeast of Bruce Road; Chico. 152 Comment
  CHSC39537  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Found along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC38163  Delphinium nudicaule Vernon Oswald 1983-3-4 108 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  CHSC59804  Delphinium patens subsp. patens Diana Licky 1981-5-5 Butte Concow area. Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  CAS-BOT-BC121618  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4252 Butte E of Bidwell Bar Bridge Comment
  CAS-BOT-BC121625  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte South side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 39 Comment
  UC1185307  Delphinium recurvatum H. E. Brown May 1 1897-May 15 1897 207 Butte near Clear Creek 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
  CHSC101129  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 Butte about 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  SEINET10448609  Dentaria californica Mary Susan Taylor 1975-3-3 Taylor 402 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CHSC64255  Deschampsia cespitosa S. C. Morey 1983-8-2 675 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SD215  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville; border of the Lily Pond. Comment
  CAS-BOT-BC192654  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte About 0.5 mi. NE of Highway 99 and Pentz Road 65 Comment
  CAS-BOT-BC192662  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  SEINET10524160  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CHSC105687  Dicentra formosa subsp. formosa Lowell Ahart 2010-9-21 17202 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CAS-BOT-BC500065  Dichelostemma capitatum A. A. Heller 1915-3-24 11778 Butte Low grassy hills 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodacatheon and Athysanus, the first plants in bloom.. Comment
  CHSC41231  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1985-3-29 2185 Butte Immediately NE of the marsh area indicated on USGS map, ca. 1/2 mile north of Cottonwood Rd, NW of PG and E substation several hundred meters. Several miles northwest of Oroville. 45 Comment
  CHSC45019  Dichelostemma capitatum subsp. capitatum Keith T. Pomeroy 1988-3-16 1 Butte 19 km nne of Chico, 2 km n of Centerville and 1.1 km e of Butte Creek. 360 Comment
  CHSC82601  Dichelostemma capitatum subsp. capitatum Tara Morgan 2002-4-23 26 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail to the left split. 395 Comment
  JEPS113335  Dichelostemma capitatum subsp. capitatum L. P. Janeway and B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  CHSC101669  Dichelostemma multiflorum Lowell Ahart 2009-4-26 15647 Butte On the west side of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC33141  Dichelostemma multiflorum J. D. Jokerst 1981-5-14 1315 Butte Top of North Table Mountain at it's W edge, ca. 1/3 mi N of Cherokee Rd. 365 Comment
  CHSC4083  Dichelostemma multiflorum J. E. Bowlin 1967-4-21 27 Butte Ca. 3 feet n of Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  RSA725064  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  CAS-BOT-BC501085  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC501090  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte Near Cohasset, Sierra foothills Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  UCD123713  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte at loop in road above Discovery Creek. ca. 1 mile north of Bald Mt., ca. 4 miles northeast of Stirling City. 1584 Comment
  SEINET10931328  Digitalis purpurea Mary Susan Taylor 1982-8-16 Taylor 5001 Butte T24N R4E ne/sw sec 1. Pulga NW quad. At loop in rd above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. Open to sun; 5200 ft. 1585 Comment
  SEINET13711412  Digitaria sanguinalis Lowell William Ahart, Lowell William Ahart 1999-1 8154 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC30376  Diplacus douglasii J. D. Jokerst 1979-3-9 1141 Butte Top of North Table Mt., adjacent to and S of the waterfalls of the S branch of Coal Cr. Canyon, center of the W edge of section 8. Comment
  CAS-BOT-BC150496  Diplacus grandiflorus John Thomas Howell; Gordon H. True 1967-7-12 43386 Butte North Fork Feather River near Cresta Powerhouse 426 Comment
  CAS-BOT-BC150504  Diplacus grandiflorus A. A. Heller 1914-5-18 11407 Butte Between Chico and Forest Ranch, 14 miles from Chico; West slope of the Sierra near Forest Ranch 609 Comment
  CAS-BOT-BC153209  Diplacus kelloggii Gladys L. Smith 1976-4-1 s.n. Butte Table Mountain Comment
  CHSC1763  Diplacus kelloggii R. Carter 1965-3-13 154 Butte Found on North Table Mt. Ca. 10 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CHSC92587  Diplacus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC44791  Diplacus torreyi R. Banchero 1980-7-7 284 Butte Along Quartz Creek Rd 0.2 mi N of its jct with County Line Rd, ca 2.4 mi S of the Fall River campground. 1164 Comment
  CHSC44815  Diplacus torreyi R. Banchero 1980-6-12 209 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CAS-BOT-BC154174  Diplacus tricolor Peter H. Raven 1963-5-8 18360 Butte On State Highway 32, 5 miles west of Chico Comment
  CHSC44358  Diplacus tricolor Lowell Ahart 1988-4-29 5969 Butte On the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  CDA34621  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. Comment
  JEPS120013  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  CHSC3563  Dodecatheon clevelandii subsp. patulum R. D. Briggs 1966-3-21 39 Butte Along Durham-Pentz Rd., 5 miles SSE of downtown Chico and 1 mile west of hwy US 99E. 57 Comment
  CHSC31198  Dodecatheon hendersonii M. S. Taylor 1980-2-17 2358 Butte Along a dirt road, ca. 1/4 mi sw of Lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC31199  Dodecatheon hendersonii M. S. Taylor 1980-3-19 2395 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. 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
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  CHSC67293  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1955 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  CHSC90092  Dodecatheon hendersonii Ross Rowland 2001-4-2 28 Butte On edge of cliff at end of Billie Trail, about 50 yards below park bench, in Billie Park, Paradise. 617180mE/4403680mN/zone 10N. 487 Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1400616  Dopatrium junceum S. Galen Smith and Malcolm Nobs 1949-7-29 1085 Butte ca 5 mi w Richvale (formerly Richland) Comment
  CHSC31400  Downingia bicornuta Paula J. Minton 1980-4-21 2 Butte Ca. 11 mi n of Chico, ca. 25 ft w of Hwy 99 and 100 ft s of Broyles Rd. 64 Comment
  UC52284  Downingia bicornuta var. bicornuta Mrs. R. W. Summers Butte Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CAS-BOT-BC41347  Draba verna Lowell Ahart 1983-4-1 3914 Butte About 4 miles south of Jarbo Gap. Along the edge of old Highway 40. 350 Comment
  CHSC2103  Dracunculus vulgaris M. Anthony 1954-5-14 Butte Campus near Chico Creek. Comment
  SFV2953  Draperia systyla I. L. Wiggins, D. B. Wiggins 1961-6-10 16314 Butte Sierra Nevada Southeast-facing, rocky slope in Feather River Canyon near P. G. & E. Rock Creek Reservoir. Comment
  UC567099  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 0.5 mile south of Barnum Mills; Chico Quad. 1371 Comment
  CDA40332  Draperia systyla G. D. Barbe, T. C. Fuller 1982-6-14 3684 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. 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
  CHSC96314  Drosera rotundifolia L. P. Janeway 2006-8-12 8850 Butte Northern High Sierra Nevada. Large soggy meadow o ... Field redacted by CHSC, contact the data manager for more information 1681 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CAS-BOT-BC157791  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC99571  Dryopteris arguta L. P. Janeway 2008-6-22 9419 Butte Cascade Range Foothills. Upper Bidwell Park, Chico (a large generally natural area); just below junction of Pine Trail and Guardians Trail. 396 Comment
  CHSC3244  Dudleya cymosa Virginia Hagaman 1966-4-17 118 Butte 6.3 miles east of Chico State College, on the side of road in Upper Bidwell Park above Salmon Hole. Comment
  CHSC42110  Dysphania ambrosioides Lowell Ahart 1986-11-7 5419 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC45548  Dysphania botrys Lowell Ahart 1984-8-19 4781 Butte Growing on dry bare sand in an area where gravel is removed, north of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC31543  Dysphania pumilio L. Ahart 1976-11-30 1224 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10507007  Echinochloa Mary Susan Taylor 1977-10-10 Taylor 1510 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  SBBG116106  Echinochloa crus-galli B. Crampton 1963-9-9 6887 Butte ca. 5 mi NW of Biggs, Biggs Rice Experiment Stn Comment
  SEINET3928601  Echinochloa muricata Lowell Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles south of Oroville.; 0 50 Comment
  UCD61091  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CHSC113142  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte In a rice field, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC115209  Elatine Lowell Ahart 2015-5-5 20141 Butte North side of large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about one mile south west of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  JEPS122234  Elatine Lowell Ahart 2014-4-26 19411 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC113455  Elatine ambigua Lowell Ahart 2014-8-8 19697 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC116008  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte Hamilton road, about 1/4 miles east of Riceton Highway. Rice field on the north side of Hamilton road, about 1/4 miles (air) north of Biggs. 30 Comment
  CHSC31681  Elatine ambigua Lowell Ahart 1974-5-1 449 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 45 Comment
  CHSC82228  Elatine ambigua Lowell Ahart 2002-4-10 9476 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  SEINET10447967  Elatine rubella Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4200 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte 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
  CAS-BOT-BC113635  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CHSC11931  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  JEPS98372  Eleocharis acicularis Lowell Ahart 2000-7-11 8579 Butte 4 air mi NE of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  SEINET13709937  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8333 Butte 12 Mi. SE of Oroville (T17N, R4E, sec 3, SW 1/4) 120 Ft. 37 Comment
  SEINET13710245  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8690 Butte Pond on E Side Sacramento River, NE of Parrott Landing, 12 Mi SW Chico Comment
  UC1562357  Eleocharis bella Lowell Ahart and Vern Oswald 1990-7-5 6650 b Butte 2 mi NE of Snag Lake (small meadow 1/2 mi N of Butte Creeek house) 1828 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-Nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the county road 1210 Comment
  CAS-BOT-BC113374  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, Honcut, ca 2.5 mi N and 1/4 mi E of Honcut. 50 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  CAS-BOT-BC112791  Eleocharis macrostachya Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC102733  Eleocharis macrostachya Lowell Ahart 2009-7-4 15997 Butte On the bottom of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC39338  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road insteaad of Ponderosa Way. 550 Comment
  JEPS98566  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  JEPS103568  Eleocharis montevidensis Lowell Ahart 2002-6-7 9710 Butte On the S side of North Honcut Creek, Peter Ahart Ranch, ca 1 mile N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 38 Comment
  CAS-BOT-BC113339  Eleocharis montevidensis Lowell Ahart 1978-7-15 s.n. Butte On moist soil along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC78196  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8289 Butte On the east 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. 39 Comment
  SEINET13710556  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8389 Butte 12 Air Mi. SE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  SEINET10938682  Eleocharis pachycarpa Lowell Ahart 1985-8-11 Ahart 5161 Butte Peter Ahart Ranch about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC113171  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville, in and beside the Lily Pond, a permanent pool. 1750 Comment
  JEPS98389  Eleocharis quinqueflora Lowell Ahart 2000-6-17 8488 Butte 7 air mi N of Oroville Oroville (North Table Mountain, W side of Cherokee Rd, S margin large spring-like area, W of lone oak tree, W of cow shute and large parking area) 403 Comment
  CDA38988  Eleocharis quinqueflora L. Ahart 2000-5-1 8333 Butte On the north margin of a large wash, just west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET7587014 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-23 8386 Butte About 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 55 Comment
  JEPS98465  Eleocharis radicans Lowell Ahart 2000-9-4 8686 Butte Along the west margin 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
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CHSC28462  Elymus caput-medusae R. A. Schlising 1979-5-30 3426 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC8205  Elymus caput-medusae D. McClain 1969-5-1 65 Butte 10 yds. s. of Upper Bidwell Rd., 1/2 mi. e. of Salmon Hole, Upper Bidwell Park, Chico. 76 Comment
  CHSC61551  Elymus elymoides subsp. californicus Lowell Ahart 1993-6-20 7005 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC46230  Elymus glaucus Pauleen Broyles 1987-6-26 1065 Butte Ca 1 air mile n.e. of Inskip. On a gravel bar in West Branch of North Fork of Feather River, ca 90 m. above road-crossing bridge. 1400 Comment
  UCD61842  Elymus glaucus R. N. Raynor; H. A. Hannesson 1941-5-9 Butte Feather River, 4 mi. S. of Oroville. Comment
  UCD61886  Elymus glaucus L. E. Hazeltine 1916-7-13 Butte Chico. Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  JEPS120108  Elymus glaucus subsp. glaucus Lowell Ahart 2012-6-28 18239 -A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC65611  Elymus glaucus subsp. jepsonii L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  SD34470  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  SD239827  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley: Palermo Road 0.3 mile east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  SBBG126101  Epilobium campestre L. Ahart 2012-6-5 18166 Butte strand of the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 295 Comment
  CHSC20963  Epilobium canum subsp. latifolium M. S. Taylor 1974-9-17 317 Butte Along Fern Banks, s side of Chico Creek, opposite Chico Municipal Golf Course, Bidwell Park, Chico. Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC113171  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC21072  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1975-10-4 954 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC37095  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-9-13 3813 Butte Near and along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reeservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC41314  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-7-22 550 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET6637246 Image available Epilobium ciliatum subsp. ciliatum H. F. Copeland 1927-1 413 Butte Jonesville 1524 Comment
  UC600547  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-7-19 Butte along Butte Creek Jonesville Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  RSA774140  Epilobium ciliatum subsp. glandulosum L. Ahart 2010-9-28 17248 Butte West side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1887 Comment
  UC398938  Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  CHSC46575  Epilobium glaberrimum subsp. glaberrimum V. Oswald; L. Ahart 1989-7-12 3856 Butte Road between Inskip and Jones Meadow, at Fish Creek. In a roadside drainage. 1432 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 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
  SEINET10939941  Epilobium paniculatum Mary Susan Taylor 1977-8-19 Taylor 1504 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CHSC52093  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC20496  Epipactis gigantea M. S. Taylor 1975-6-25 802 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  JEPS119721  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 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. 1400 Comment
  CHSC39211  Equisetum hyemale subsp. affine M. S. Taylor 1983-3-13 5244 Butte Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. 487 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
  CAS-BOT-BC57511  Equisetum telmateia E. B. Copeland 1899-4-1 s.n. Butte near Chico Comment
  CAS-BOT-BC204453  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC44921  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  SEINET10507426  Eragrostis curvula Lowell Ahart 1984-5-19 Ahart 4608 Butte Along edge of Hwy 70, ca. 1 mi S of the jct of Cherokee Road and Hwy 70, ca. 12.5 mi N of Oroville; Foothill Woodland; 300 m. 300 Comment
  CAS-BOT-BC284040  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 1492 Butte EAst of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of the Gridley Bridge 28 Comment
  CAS-BOT-BC284080  Eragrostis pectinacea var. pectinacea Lowell Ahart 1977-7-10 1493 Butte 3 miles northeast of Honcut 50 Comment
  CHSC112736  Eragrostis pectinacea var. pectinacea Lowell Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC34204  Eragrostis pectinacea var. pectinacea J. D. Jokerst 1981-9-26 1501 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  JEPS103286  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  CHSC56749  Erigeron canadensis J. D. Jokerst 1980-4-2 Butte Town of Cherokee. Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  CAS-BOT-BC295436  Erigeron karvinskianus M. S. Taylor 1981-5-21 3788 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  UC1586605  Erigeron philadelphicus var. philadelphicus Vernon H. Oswald and Lowell Ahart 1991-5-13 4586 Butte between Canyon Drive and Oroville Dam Blvd East (opposite the spillway); Oroville Recreation Area, Dan Beebe Trail 137 Comment
  CAS-BOT-BC216053  Eriodictyon californicum John Thomas Howell 1962-6-15 37450 Butte Magalia, Sierra Nevada 731 Comment
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  SD1343  Eriogonum marifolium E. B. Copeland 1930-7-12 Butte Above Jonesville; open fir woods 2000 Comment
  SEINET4854949  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  CHSC34041  Eriogonum nudum var. oblongifolium L. Ahart 1981-7-7 2930 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  POM306193  Eriogonum nudum var. pubiflorum Henry J. Ramsey 1939-10-16 s.n. Butte Oroville Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC113601  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CAS-BOT-BC268238  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  UC1562322  Eriogonum umbellatum var. nevadense Vernon Oswald and Lowell Ahart 1990-7-19 4373 Butte ca. 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca. 0.7 mi w of Plumas County line); Philbrook Creek 1950 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  CAS-BOT-BC262215  Eriogonum ursinum Lowell Ahart 1987-5-27 5717 Butte Along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 365 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  CAS-BOT-BC308149  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1977-5-20 1146 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  POM358062  Eriophyllum lanatum var. grandiflorum M. M. Boney 1897-1 s.n. Butte [Unspecified] Comment
  UC1577644  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  SEINET10904847  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 Ahart 4997 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  RSA715730  Erodium brachycarpum L. P. Janeway 2005-3-10 8357 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
  CHSC19922  Erodium cicutarium M. S. Taylor 1975-2-16 375 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC98941  Erodium cicutarium Lowell Ahart 2008-5-8 14722 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET10495114  Erodium moschatum Mary Susan Taylor 1975-3-25 Taylor 420 Butte Chico. Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  UC195454  Eryngium castrense A. A. Heller 1914-6-2 11472 Butte 5 mi. s. Pentz (along Dry Creek); Dry Creek Comment
  UC764741  Eryngium castrense R. F. Hoover 1936-5-20 1156 Butte 8 mi. n. Oroville Comment
  CAS-BOT-BC211103  Eryngium pinnatisectum Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC9287  Erysimum capitatum var. capitatum D. C. Burns 1971-4-3 116 Butte At base of cliff, ca. 3.5 mi e of Jarbo, (2.5 mi w of 1st bridge that crosses the n fork of the Feather River). 609 Comment
  CHSC113422  Erythranthe breweri Lowell Ahart 2014-7-7 19590 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC40889  Erythranthe filicifolia Lowell Ahart 1985-5-22 5027 Butte Along Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC31868  Erythranthe geniculata L. Ahart 1974-5-14 453 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC20495  Erythranthe glaucescens M. S. Taylor 1975-6-25 796 Butte Along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC40884  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC78102  Erythranthe glaucescens Caleb E. Casey 1999-4-6 Butte Bear Hole, Upper Bidwell Park. Found near Chico creek along old diversion canal. 121 Comment
  CHSC90151  Erythranthe glaucescens Kevin J. Kearns 1980-4-24 10 Butte About 50 yds south of Butte Creek and 300 yds west of the Covered Bridge (Covered Bridge is 35 yds southeast of intersection of Humbug and Honey Run Road), 6.5 mi east-southeast of Chico. 140 Comment
  CHSC102412  Erythranthe guttata Lowell Ahart 2009-6-19 15926 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC44735  Erythranthe guttata R. Banchero 1980-6-16 235 Butte Chico Meadows, 0.95 mi N of the jct of Humbolt Rd and the Skyway. 1316 Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part 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
  SEINET8340799  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte on the Chico-Hamilton road, 6 miles from Chico in a low grain field. Comment
  CHSC38702  Erythranthe nasuta Vernon Oswald 1983-5-7 443 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.7 mi e of the power lines. 353 Comment
  CHSC44687  Erythranthe nasuta R. Banchero 1980-4-13 108 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CHSC44757  Erythranthe primuloides R. Banchero 1980-6-16 234 Butte Chico Meadows, 0.95 mi N of the jct of Humbolt Rd and the Skyway. 1316 Comment
  CHSC23653  Erythronium multiscapideum M. S. Taylor 1976-4-20 1077 Butte Ca. 100 m n of junc of the Skyway and Coutolenc Rd, Magalia. 609 Comment
  CHSC32853  Erythronium multiscapideum William Askea 1981-4-22 11 Butte Ca. 50 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 725 Comment
  CHSC33719  Erythronium multiscapideum M. S. Taylor 1981-4-8 3515 Butte S side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek cyn and Pulga, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 21 mi n of Oroville. 1005 Comment
  CHSC49690  Erythronium multiscapideum Vernon Oswald 1985-4-3 1697 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC88607  Erythronium multiscapideum Linnea Hanson 1983-4-6 181 Butte Plumas National Forest. Hwy. 70, behind Cal Trans Maint. Station. 609 Comment
  UCD111667  Erythronium multiscapideum Christopher Mallek 2008-1 HW1- 2 Butte Magalia. 756 Comment
  CAS-BOT-BC504520  Erythronium multiscapideum W. J. Follett 1965-3-24 s.n. Butte Feather River highway, 0.6 mi. above Pulga Bridge Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  UC204875  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte 8 mi from Chico (on Chico-Centerville Rd, near Cutte Creek) Comment
  POM253319  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-17 15041 Butte Slope back of the Salmon Hole on Chico Creek east of Chico 122 Comment
  CAS-BOT-BC402972  Eschscholzia californica Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  CHSC101694  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  HSC86836  Eschscholzia lobbii Debby Reber 1981-4-14 18 Butte 1/4 mi. SW of Horseshoe Lake 91 Comment
  SEINET12094432  Eschscholzia lobbii Unknown 1988-1 12 Butte ca 4 mi E of Hwy 70 on Palermo Rd., 4 mi S of Palermo Honcut Hwy., .1 mi E on Melody Lane 41 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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Mar 30 2007
  UC1586472  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4736 Butte Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.) at Jordan Creek (e. of Oroville-Quincy Hwy., ca. 5.75 mi. (air) n.e. of Brush Creek) 1082 Comment
  CHSC11090  Euphorbia crenulata Lowell Ahart 1969-5-20 Butte Near Centerville, 10 miles N.E. of Chico. 457 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 Comment
  RSA70383  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte north of Chico. Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 Comment
  CHSC50815  Eurybia integrifolia Vernon Oswald; Lowell Ahart 1990-7-19 4363 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.2 mi west of the Plumas County line. 1981 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC310668  Euthamia occidentalis Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut. Near the edges of North Honcut Creek 50 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC44535  Festuca arundinacea Lowell Ahart 1988-6-29 6104 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  CHSC49546  Festuca californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir. At the edge of the road bordering the reservoir. 1005 Comment
  JEPS108543  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
  CHSC12611  Ficus carica S. Posner 1972-9-24 Butte Ca. 150 yds S of Humbug Road, 3 mi E of Skyway. Comment
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 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
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  CAS-BOT-BC437083  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  SEINET10483092  Fragaria virginiana var. platypetala Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4190 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CAS-BOT-BC62939  Frangula californica subsp. tomentella Ella Dales Cantelow 1940-10-6 4292 Butte Buck's Lake to Oroville Road. Comment
  CHSC43730  Frangula purshiana Vernon Oswald 1984-6-7 1269 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. 1109 Comment
  CAS-BOT-BC223387  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 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-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC40037  Fritillaria pluriflora R. M. Austin 1986-2-1 Butte Chico. Comment
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Jul 23 2013
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
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Oct 5 2009
  CHSC3430  Galium aparine Judy Potter 1966-3-28 207 Butte On Table Mountain. 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
  CHSC44906  Galium bolanderi Lowell Ahart 1988-7-24 6132 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  JEPS52658  Galium bolanderi Lauramay T. Dempster 1964-7-24 4048 Butte road above Jonesville 1658 Comment
  JEPS52659  Galium bolanderi Lauramay T. Dempster 1964-7-24 4047 Butte Nimshew 731 Comment
  RSA726312  Galium bolanderi L. Ahart, Lawrence Janeway 2007-7-10 14284 Butte On the N side of Forest Road 21N31Y. About 6/10 mile W of Bald Rock Road. About 17 miles (air) NE of Oroville. 1033 Comment
  CHSC29769  Galium divaricatum M. S. Taylor 1980-5-24 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29770  Galium parisiense M. S. Taylor; L. Ahart, R. S. Schlising 1980-5-31 2750 Butte E side of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 609 Comment
  JEPS98587  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS122076  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  SEINET10500787  Galium trifidum var. subbiflorum Mary Susan Taylor 1977-8-17 Taylor 1462 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  UC1562286  Gamochaeta coarctata Lowell Ahart 1990-7-20 6573 Butte about 1 1/2 mi n and 3 mi e Honcut (about 12 mi se of Oroville); North Honcut Creek, Peter Ahart Ranch 54 Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UCD159565  Gamochaeta ustulata D. S. Park 2011-6-24 302 Butte Growing on edges of Thermalito Afterbay. 43 Comment
  CAS-BOT-BC282603  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC84035  Gastridium phleoides Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 45 Comment
  SEINET10935022  Gastridium phleoides Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4063 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
  SEINET4571746  Gastridium phleoides R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC30070  Gaultheria ovatifolia R. A. Schlising; R. Banchero 1980-7-7 3845 Butte NE of village of Feather Falls, 2.2 mi N of Lumpkin-LaPorte Road on road to Fall River Campground. 1051 Comment
  CHSC25423  Gayophytum heterozygum Hayes; Warner 1977-9-11 60 Butte Along shoulder, Hwy 32, ca. 2 m s of road, exactly 24.6 mi e of Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  POM220088A  Gayophytum humile H. F. Copeland 1927-9-4 448 Butte Jonesville. 1524 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CDA42876  Geranium carolinianum L. Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC3974  Geranium molle L. R. Alexander 1967-4-11 10 Butte Found at intersection of Honey Run Rd. and Humbug Road near covered bridge. 91 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 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
  CHSC44413  Gilia capitata subsp. pedemontana Lowell Ahart 1988-5-30 6028 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10969154  Gilia capitata subsp. pedemontana Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4748 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
  CHSC45947  Gilia tricolor Lowell Ahart 1976-4-14 1063 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  HSC43100  Gilia tricolor Maralyn O'Meara 1974-4-20 294 Butte Table Mtn. 305 Comment
  CHSC1256  Gilia tricolor subsp. tricolor A. Riker 1897-4-1 Butte Comment
  CAS-BOT-BC266484  Githopsis diffusa Lowell Ahart 1987-5-12 5651 Butte S of Lumpkin Ridge Road, 1.5 miles NE of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CAS-BOT-BC266584  Githopsis pulchella A. A. Heller 1937-5-31 15340 Butte Near the junction of Highway 24 and the Yankee Hill road, about 21 miles from Oroville Comment
  CHSC86852  Githopsis pulchella subsp. campestris L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7788 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC113223  Githopsis specularioides Lowell Ahart 2014-5-2 19434 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC24649  Githopsis specularioides S. Deaton 1976-4-23 36 Butte 10 ft down side of Feather Falls trail, ca. 1 7/8 mi n of Falls parking lot. 853 Comment
  CHSC33153  Githopsis specularioides R. Watts 1974-4-30 29 Butte Found ca. 15 mi ne of Chico on Cohasset Road. Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  UC1609064  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 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
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  SEINET4584723  Glyceria striata R. McKee, H. Westover 1918-6-16 s.n. Butte Jonesville Comment
  JEPS115661  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET10452321  Glycyrrhiza lepidota Mary Susan Taylor 1979-10-12 Taylor 2245 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  SEINET10839251  Gnaphalium chilense Mary Susan Taylor 1981-1-5 Taylor 3372 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC115367  Gnaphalium palustre Lowell Ahart 2015-4-24 20076 Butte On the sides of a large duck field, 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  SEINET10938059  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4152 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 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. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  SEINET10475272  Gnaphalium thermale Mary Susan Taylor 1979-10-5 Taylor 2233 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC25448  Goodyera oblongifolia Hayes; Warner 1977-9-11 75 Butte Ca. 100 m n of road between Jonesville and Butte Meadows, exactly 8.4 mi from the junction of the Butte Meadows road with Hwy 32. 1219 Comment
  SEINET10470040  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1908 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10547782  Gratiola ebracteata Mary Susan Taylor 1980-4-21 Taylor 2562 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  JEPS113891  Grindelia hirsutula L. P. Janeway 2007-6-27 9077 Butte Northern High Sierra Nevada; Plumas National Forest; along Road 28 at Road 22N01; ridgetop between Swayne Hill and Chino Ridge; 3.7 air km N-NE of the mouth of French Creek at the North Fork Feather River arm of Lake Oroville. Along edge of old but well-used dirt road. 832 Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  CHSC47986  Hackelia californica Vernon Oswald 1983-7-19 884 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  UC1560382  Hackelia californica E. Joyal and D. Mehlman 1988-7-3 1308 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  CHSC35083  Hackelia micrantha Preston; Burk, Banchero, R. A. Schlising 1981-7-21 4162 Butte NE Butte County, on E slopes of Snow Mt. 2042 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  CAS-BOT-BC282857  Hainardia cylindrica Lowell Ahart 1974-6-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC31428  Helenium bigelovii L. Ahart 1980-7-20 2479 Butte Near the edges of seeps, near Bean Creek Rd, on the s side of Little Bald Rock, ca. 15 mi ne of Oroville. 1100 Comment
  RSA4141  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville. 1500 Comment
  CAS-BOT-BC306544  Helenium bigelovii Clarence R. Quick 1966-7-11 66 -49 Butte At west end of Concow Meadow, about 6 m. north of Jarbo Gap 1097 Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  CHSC35991  Helianthella californica var. nevadensis J. D. Jokerst 1982-5-8 1567 Butte N of Forbestown along Ponderosa Way 3/10 mi. N of its jct with Lower Forbestown Rd. Comment
  SD175807  Heliotropium europaeum D. G. Kelch 2006-8-2 06 340 Butte Along butte Cree, north of Durham-Dayton Highway. 46 Comment
  CHSC21381  Hemerocallis fulva M. S. Taylor 1975-6-22 782 Butte On s side of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University Chico. Comment
  CAS-BOT-BC309784  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  UC897728  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  SEINET10759135  Hemizonia fasciculata Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7030 A Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC74081  Herniaria hirsuta subsp. hirsuta B. Castro 1996-8-20 715 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.25 mi S of Rogers Cow Camp via 'J' spur rd S of USFS Rd 23N15. 1222 Comment
  CHSC113538  Herniaria hirsuta var. hirsuta Lowell Ahart 2014-9-23 19862 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  CHSC24954  Hesperevax caulescens T. F. Burnham 1976-4-20 12 Butte E side of Broyles Road, .7 mi n of Cana Pine Creek Road and Broyles Road intersection. 97 Comment
  UCD133079  Hesperevax caulescens L. Ahart 1974-5-20 458 Butte Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC310189  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. Near North Honcut Creek 100 Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  CHSC41914  Hesperolinon micranthum Lowell Ahart 1983-8-16 4286 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  UC203614  Hesperolinon micranthum A. A. Heller 1914-7-22 11587 Butte Little Summit 1463 Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  UC1586511  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1991-8-28 4851 Butte sw side of Hwy 162 ca 3.5 mi nnw Biggs; Rice Experiment Station 30 Comment
  UCD19365  Heteranthera limosa E. Dean; with J. Ditomaso and E. Healy 2001-8-20 856 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC115191  Heterocodon rariflorum Lowell Ahart 2015-4-27 20081 Butte On the bottom of the stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along the Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10460714  Heterocodon rariflorum A. Arthur Heller 1914-7-23 Heller 11616 Butte CHICO MEADOWS, edge of meadow 1219 Comment
  SEINET10460749  Heterocodon rariflorum Mary Susan Taylor 1980-5-15 Taylor 2623 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC40325  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CHSC45193  Heteromeles arbutifolia Lowell Ahart 1975-11-13 994 Butte Near the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the 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 miles (air) SW of Chico. 32 Comment
  CHSC107596  Heuchera micrantha var. erubescens Lowell Ahart 2011-7-9 17578 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC61013  Heuchera micrantha var. erubescens Lowell Ahart 1993-7-6 7057 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1192274  Hibiscus lasiocarpos Malcolm A. Nobs and S. Galen Smith 1949-7-29 1090 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC116522  Hibiscus lasiocarpos var. occidentalis B. Castro 2012-9-29 1986 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along the park road from its origin at Wildwood Ave. 132 Comment
  CHSC38056  Hirschfeldia incana R. E. Preston 1983-5-26 385 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  SEINET10966308  Hookera coronaria A. Arthur Heller 1913-6-4 Heller 107 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC285088  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-5-17 2311 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC27569  Hordeum marinum subsp. gussoneanum Robert Schlising 1978-5-17 3261 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  JEPS115240  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC56635  Hordeum vulgare J. Lund 1980-4-28 Butte 0.3 mi south of Palermo on Hwy 99. 76 Comment
  JEPS94725  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10483360  Horkelia elata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4101 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  CHSC48462  Hydrophyllum occidentale Vernon Oswald 1984-4-9 1128 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  UCD110323  Hypericum anagalloides L. Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM196017  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  CAS-BOT-BC410225  Hypericum concinnum A. A. Heller 1928-5-27 I 4560 Butte In an adandoned field near the sawmill along the Neal road at Paradise Comment
  SBBG4758  Hypericum concinnum H. and M. Dearing 1938-6-21 2047 Butte near Lone Pine Lookout, 19 mi N of Chico Comment
  CHSC48480  Hypericum formosum var. scouleri Vernon Oswald 1983-7-26 917 Butte Near Soda Springs Campground off of Calif. Hwy 32, 18.1 mi n=e of Forest Ranch. Growing in a wet, marshy spot beside Chico Creek. 1158 Comment
  CHSC94032  Hypericum perforatum R. D. Fischer 2005-6-6 737 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants found growing near trailhead adjacent highway. 457 Comment
  CAS-BOT-BC401220  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CAS-BOT-BC312926  Hypochaeris glabra M. S. Taylor 1981-4-28 3568 F Butte Along Four Trees Rd, ca. 1 mi e of Hwy 70, ca. 2 mi ne of Pulga 670 Comment
  CAS-BOT-BC312932  Hypochaeris glabra John Thomas Howell; Gordon H. True 1967-6-13 42592 Butte Oroville 51 Comment
  UC398944  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville 1500 Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC2812  Iris macrosiphon David Prall 1965-3-14 Butte At roadside ca. 3 yds. west of Neal Rd. 2 miles east of Highway 99E. 152 Comment
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  SEINET10469750  Iris macrosiphon Mary Susan Taylor 1976-4-4 Taylor 1060 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC35705  Iris tenuissima J. D. Jokerst 1982-5-8 1569 Butte Areas adjacent to road to Forbestown Resv. Comment
  CHSC52482  Iris tenuissima Rob Lee 1975-5-4 13 -23 Butte Eldredge Drive, Paradise. 304 Comment
  CDA43102  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada.; Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA5202  Isoetes melanopoda E. B. Copeland 1903-5-30 3281 Butte Unspecified Comment
  CHSC116710  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte On the very west edge of North Honcut creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC29222  Isoetes nuttallii M. S. Taylor 1980-3-28 2404 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave, ca. 1 1/4 mi e of Hwy 99. 76 Comment
  SEINET10874662  Isoetes nuttallii Mary Susan Taylor 1975-4-26 Taylor 516 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
  CHSC30733  Jensia rammii M. S. Taylor 1980-5-27 2707 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  UC1609045  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte about 6 air mi ne of Feather Falls (on the w side of Fall River, about 100 yards w of the bridge across Fall River); Fall River 1036 Comment
  CHSC44522  Juncus balticus subsp. ater Lowell Ahart 1988-6-23 6070 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CHSC44648  Juncus bufonius var. bufonius J. D. Jokerst 1982-4-29 1539 Butte Grey Lodge n of and adjacent to Rutherford Rd. ca 100 m w of Pennington Rd. Comment
  CHSC54363  Juncus bufonius var. bufonius M. Bailey 1991-4-19 567 Butte Butte College campus. Within fenced area around Wallis Pond, along drainage to the w of the pond and e of Well #3. 85 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
  UC1609069  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte about 1 air mi nw of the Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC49607  Juncus bufonius var. congestus Vernon Oswald 1987-6-12 2986 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC97238  Juncus bufonius var. congestus Lowell Ahart 2007-6-3 13971 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  JEPS117319  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  CDA42856  Juncus capitatus L. Ahart 2012-5-2 17976 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC28663  Juncus effusus subsp. pacificus J. D. Jokerst 1979-10-5 362 Butte At base of waterfall on Bear Ranch Cr., ca. 1/4 mi. S.E. of Hwy 70. 548 Comment
  RSA726658  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14301 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  RSA718307  Juncus effusus var. exiguus L. P. Janeway 2006-8-6 8828 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  RSA325886  Juncus ensifolius L. Ahart, P. Ahart 1983-7-29 4223 Butte Ca. 2 miles S of Milsap Bar, ca. 23 miles NE of Oroville. 750 Comment
  SEINET3450941  Juncus ensifolius Unknown 2003-6-30 10336 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CHSC44246  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1988-7-13 3587 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC95186  Juncus howellii R. D. Fischer; Jenny Marr 2004-9-5 787 Butte Sierra Nevada Mountains, the north-east corner of Butte County and ca. 6 miles north of Butte Meadows and 1 mile north of Humboldt Road along Scotts John Road/creek. 1524 Comment
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS127087  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC110102  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41441  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Along the sides and on the bottom of small vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC47564  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte On the bottom and sides of vernal pools, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  SEINET3069038 Image available Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca 2 miles north and 1/2 mile east of Honcut, between Marysville and Oroville 50 Comment
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  JEPS114977  Juncus occidentalis Lowell Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  JEPS121936  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS98471  Juncus occidentalis Lowell Ahart 2000-6-29 8535 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  RSA0119188  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  SEINET10472458  Juncus oxymeris Lowell Ahart 1983-8-16 Ahart 4297 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CDA34545  Juncus tenuis L. Ahart 2007-7-7 14262 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS121895  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte Below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC44722  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-17 251 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  CAS-BOT-BC237826  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 7/10 mi. NW. of Magalia at NW. side of Magalia Reservoir 731 Comment
  CHSC50422  Kelloggia galioides Vernon Oswald; Lowell Ahart 1990-6-27 4326 Butte Oro-Quincy Hwy between Merrimac and Buckeye sites, ca. 0.4 mi south of Plumas County line. Comment
  CHSC50687  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte Near the Forbestown Generator, on the south-east side of the Forbestown Reservoir. 487 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
  CHSC63697  Lactuca canadensis Lowell Ahart 1994-10-23 7568 Butte Along the edge of the water ditch, about 3 miles north of De Sabla Reservoir, about 4 miles (air) west and 1/2 mile north of Stirling City. 853 Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC26761  Lagophylla glandulosa M. S. Taylor; M. Hayes 1977-8-16 1438 Butte On both sides of Williams Rd, ca. 300 yds n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  CAS-BOT-BC271247  Lamarckia aurea Lowell Ahart 1980-3-23 2050 Butte West Branch Bridge, Highway 70 Comment
  SEINET3450773  Lamarckia aurea Unknown 2003-4-8 10051 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, northwest of Cherokee Road, about 1/8 miles northwest of the iron gate and fence 320 Comment
  CHSC100986  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  RSA755349  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  CHSC277  Lasthenia californica J. Turner 1930-3-25 Butte Chico Creek Canyon. 152 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  JEPS107753  Lasthenia californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
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Jan 19 2011
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CHSC112889  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-6-1 n.s. Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  UC725646  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte 1 mi n Rock Creek (along the road e of U.S. Highway #99E) Comment
  HSC85968  Lasthenia glaberrima J. Hunter 1986-4-12 49 Butte Vacant lot within the city of Chico, ca. 45 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  CAS-BOT-BC352921  Lasthenia glaberrima Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC44392  Lathyrus angulatus Lowell Ahart 1988-5-22 6006 Butte In a farmed field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS98423  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte 5 air miles SW of Oroville (near margin of Thermalito Afterbay, S side of access road to boat ramp, w of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC29843  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  CAS-BOT-BC213347  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 8786 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  CHSC38495  Lathyrus latifolius Vernon Oswald 1983-5-23 532 Butte Upper Bidwell Park, Chico, on the N side of Chico Creek at Bear Hole (1.0 mi E of the power lines). 109 Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC213289  Lathyrus sulphureus Frances Brown 1935-4-1 s.n. Butte Near Durham. Comment
  CAS-BOT-BC213296  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte 5 mi. below Magalia on Oroville Road, Northern Sierra Nevada 609 Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  CHSC861  Lathyrus tingitanus V. Holt 1947-5-1 Butte Nimshew grade. 609 Comment
  CHSC3871  Layia fremontii Gary Dutton 1966-3-14 112 Butte Found 1 mile into Upper Bidwell Park. From entrance. Comment
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  SEINET11805150  Layia fremontii Unknown 1978-1 20 Butte 0.5 mi ESE of East Ave, ca 1700 ft NW of Big Chico Creek, ca 1800 ft N of Hooker Oak, Chico 85 Comment
  CAS-BOT-BC249064  Layia platyglossa George K. Helmkamp; E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley: W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  CHSC109659  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC215734  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near Cohasset Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CAS-BOT-BC89885  Lepidium nitidum H. E. Brown 1897-4-15 146 Butte Near Clear Creek. 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
  CAS-BOT-BC12912  Lepidium strictum Lowell Ahart 1962-4-10 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS98989  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte About 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) SE of Paradise. 335 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CHSC41977  Leptochloa fusca subsp. uninervia Lowell Ahart 1986-11-14 5480 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
  CAS-BOT-BC226524  Leptosiphon acicularis Lowell Ahart 1971-4-21 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
Read comments
Jul 19 2018
  CHSC1276  Leptosiphon bicolor R. Carter 1964-3-13 42 Butte Bidwell Park, Chico, across from golf course beside building at old rifle range. Comment
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC40675  Leptosiphon bolanderi J. D. Jokerst 1984-4-6 1963 Butte Just north of Kunkle Resv ca. 1/2 mile, south of Lago Vista Rd ca 1/2 mile. Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 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
  CHSC29386  Leptosiphon filipes R. A. Schlising 1980-6-24 3777 Butte Along Hwy 70 in canyon of North Fork, Feather River, 0.2 mi N of Cresta Powerhouse. At roadside. 457 Comment
  CHSC33250  Leptosiphon filipes R. A. Schlising; R. Banchero 1980-7-7 3852 Butte NE of village of Feather Falls, 0.5 mi N of Fall River Campground and bridge. Roadside. Comment
  POM65231  Leptosiphon filipes A. A. Heller, H. E. Brown 1902-5-9 5508 Butte Berry Canyon (Near Clear Creek) from [type?] region Comment
  CAS-BOT-BC341741  Lessingia nana A. A. Heller 1922-8-25 13734 Butte On the Richardson Springs road about 4 miles from Chico Comment
  CAS-BOT-BC341781  Lessingia nemaclada Lowell Ahart 1980-9-10 2643 Butte 7 miles east of Milsap Bar 1200 Comment
  UC179649  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte hills 8 mi n Oroville Comment
  CHSC42469  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  UC1736059  Lewisia rediviva var. rediviva Dean W. Taylor 1972-4-28 1396 Butte 304 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  JEPS117524  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  CHSC43073  Lilium humboldtii R. A. Schlising; Diane Ikeda 1987-6-12 4512 Butte S of Cohasset, along Cohasset Rd. ... Field redacted by CHSC, contact the data manager for more information 457 Comment
  POM161665  Lilium kelleyanum E. B. Copeland 1929-07 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  SEINET10971606  Lilium kelleyanum Mary Susan Taylor 1980-7-6 Taylor 3069 Butte T26N R4E ne sec 14, Butte Meadows quad; N side of Old Humboldt Rd, ca. 0.8 mi NE of Cherry Creek Campground, around spring which crosses road. With R.A. Schlising. 1463 Comment
  UC119797  Lilium washingtonianum subsp. washingtonianum Mrs. R. M. Austin Jul 1896 528 Butte Colby Comment
  CHSC111363  Limnanthes alba subsp. versicolor Lowell Ahart 2012-5-4 17986 Butte About 200 feet south of stream in Beatson Hollow, about 1 1/4 mile NW of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC3998  Limnanthes douglasii L. R. Alexander 1967-4-9 2 Butte Around pool, ca. 4 mi. s of Chico on 99E. Ca. 50 yds. off the right side of highway. 60 Comment
  UC1586572  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 Butte about 2 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC67555  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3241 Butte N of Hwy. 32 across from church. 76 Comment
  CDA38643  Limnophila X ludoviciana Cass 2012-10-31 PDR# 041 P06003903 Butte Nelson; Aguas Frias Road and Nelson Road. 0 Comment
  JEPS123907  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10546852  Linanthus Mary Susan Taylor 1981-5-21 Taylor 3777 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC38596  Linanthus dichotomus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  JEPS120027  Lindernia dubia Lowell Ahart 2012-10-20 18512 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC43261  Lindernia dubia var. anagallidea Lowell Ahart 1987-9-4 5878 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC51015  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-4 6541 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  CHSC28632  Lithocarpus densiflorus M. S. Taylor 1979-3-31 1969 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  CHSC618  Lithocarpus densiflorus N. Glasgow 1939-4-1 Butte De Sabla. 762 Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  CHSC92947  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  CHSC32134  Lithophragma bolanderi L. Ahart 1974-4-11 390 Butte Peter Ahart Ranch. 45 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
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  CHSC51110  Lithophragma parviflorum var. trifoliatum Ginger S. Gough 1989-4-8 20 Butte Ca. 9 m se of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  UC137062  Lithophragma parviflorum var. trifoliatum Mrs. R. M. Austin Apr. 1896 263 Butte Bluffs Little Chico Creek Little Chico Creek; Bluffs Little Chico Creek Comment
  CAS-BOT-BC428448  Lithophragma trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek east of Chico near the Honey Run grade bridge. Comment
  RSA727542  Lithospermum californicum 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
  CHSC29828  Logfia gallica M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2767 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC38350  Logfia gallica Vernon Oswald 1983-4-25 390 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC765468  Lomatium caruifolium var. denticulatum R. F. Hoover 1938-4-24 3238 Butte 3 mi. n. Chico Comment
  CHSC28975  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst 1980-3-12 469 B Butte Ca 1.0 mi E of Chico Municipal Airport. 60 Comment
  UCD80001  Lomatium marginatum CNPS SN Foothill Team 2006-5-23 SNNR 0784 Butte BLM Parcels near Paradise. 648 Comment
  SEINET10454503  Lomatium marginatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4098 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  SD116547  Lomatium tomentosum Barbara Ertter, Jeffery Strachan and Lowell Ahart 1980-5-8 3317 Butte North Honcut Creek on Peter Ahart Ranch around 2I(c) miles northeast of Honcut between Marysville and Oroville 45 Comment
  SEINET10840943  Lomatium tomentosum Mary Susan Taylor 1980-3-30 Taylor 2412 Butte Upper Bidwell Park, Chico. 244 Comment
  CHSC1963  Lomatium utriculatum E. Canfield 1904-4-7 Butte Hooker Oak field. 76 Comment
  JEPS115616  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 235 Comment
  SEINET12121859  Lomatium utriculatum Unknown 1985-1 4976 Butte W of Lunt Road, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  POM78231  Lomatium vaginatum C. C. Bruce 1897-04 2058 Butte Butte Creek Comment
  POM319309  Lonicera Patricia Wilder 1971-6-23 5197 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  CAS-BOT-BC240446  Lonicera hispidula C. R. Quick 1941-6-8 41 -05 Butte About 2 miles S. of Big Bar Mt. Comment
  CHSC869  Lotus corniculatus D. Bower 1953-8-6 Butte 1B Llano Seco. 30 Comment
  JEPS87386  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  CDA13324  Lotus nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13170 Butte Sierra Nevada; Approx. 1 mi. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  SEINET10940035  Lotus nevadensis Lowell Ahart 1985-5-31 Ahart 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  RSA769900  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg ) of Honcut, 6.6 mi. SE (116 deg ) of Gridley 27 Comment
  CDA27344  Lotus wrangelianus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  JEPS34381  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1963-5-14 8857 Butte about 2 mi above and e Butte Creek Canyon beginning at jct with Paradise Skyway (along Humbug Road, bottom of Butte Creek Canyon); Butte Creek Canyon 91 Comment
  RSA406345  Lotus wrangelianus M. M. Boney 1897-1 1724 Butte Butte Comment
  CAS-BOT-BC198301  Lupinus John Thomas Howell 1976-4-1 51521 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  RSA0036525  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC65559  Lupinus albicaulis L. P. Janeway 1995-6-20 4805 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  RSA795643  Lupinus albifrons var. albifrons L. Ahart 2012-4-20 17895 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  RSA0045622  Lupinus bicolor subsp. tridentatus Lowell A. Ahart 2012-4-17 17874 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  RSA754861  Lupinus bicolor subsp. tridentatus L. Ahart 2009-4-26 15619 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
  JEPS107276  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
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  RSA337376  Lupinus latifolius subsp. longipes L. Ahart 1984-6-8 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Road, ca. 6 miles northeast of Ponderosa Dam, ca. 4 miles southeast of Feather Falls. 550 Comment
  CHSC46561  Lupinus lepidus var. sellulus V. Oswald 1989-7-12 3847 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  UC478506  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville , Colby Canyon (Coby Canyon) 1600 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
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  CHSC32139  Lupinus nanus var. vallicola L. Ahart 1975-5-12 778 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UC600395  Lupinus polyphyllus var. burkei H. F. Copeland 1931-6-10 Butte Jonesville Comment
  SEINET10452666  Lupinus stiversii Mary Susan Taylor 1980-4-18 Taylor 2529 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  CHSC116230  Luzula cascadensis Lowell Ahart 2015-6-16 20240 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  CDA39245  Luzula comosa W. Gilbert,et al. 1968-3-18 s.n. Butte West side of old Hwy 70 ca. 3/4 mile south of Big Bend Rd., Yankee Hill district. 0 Comment
  CAS-BOT-BC436645  Luzula comosa var. laxa H. F. Copeland 1929-6-11 1244 Butte Jonesville 1524 Comment
  JEPS113269  Luzula comosa var. subsessilis Lowell Ahart 2007-5-29 13951 Butte On the north side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northea 844 Comment
  CHSC38926  Luzula macrantha Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. In a steamlet at the bottom of a slope bordering Chico Creek. 198 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
Read comments
Jun 21 2007
  CHSC51222  Lycopus americanus Lowell Ahart 1984-8-19 4783 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 30 Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  UC1594713  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte ca. 2 mi. w. Oroville Dam (n. side of Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  POM180888  Lycopus americanus H. F. Copeland 1923-6-4 816 Butte Nelson. Comment
  CHSC112328  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  JEPS98548 Image available Lythrum salicaria Lowell Ahart 2000-7-18 8598 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
  CAS-BOT-BC342704  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  JEPS40334  Madia elegans H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UC1609068  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD134232  Madia elegans M. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. Comment
  CHSC102734  Madia elegans subsp. densifolia Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 203 Comment
  CHSC84327  Madia elegans subsp. densifolia Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CAS-BOT-BC342964  Madia gracilis Lowell Ahart 1981-8-15 3037 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CDA8274  Madia gracilis G. D. Barbe, T. C. Fuller 1982-6-14 3682 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC40301  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
  CAS-BOT-BC342952  Madia gracilis David D. Keck 1930-7-25 979 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  SEINET10474830  Madia rammii Heidi H. Schmidt 1993-6-15 Schmidt 859 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC2306  Maianthemum racemosum R. M. Staley 1953-7-1 Butte Canyon Creek. Comment
  CHSC33974  Maianthemum stellatum M. S. Taylor 1981-5-13 3705 Butte Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi s of Four Trees R, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CHSC62096  Malacothrix floccifera L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC84130  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  CHSC34965  Malvella leprosa R. A. Schlising 1981-9-20 4195 Butte 3.4 mi W of railroad crossing in Richvale, on Richvale West Road. Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC60580  Marah watsonii Vernon H. Oswald; Lowell Ahart 1993-4-21 5287 Butte Middle of Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC63048  Marah watsonii Vernon H. Oswald 1994-4-14 6105 Butte Old railroad grade along the N. Fork Freather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  HSC95531  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte 100 yards E of Parking lot 10, Gray Lodge State Wildlife Management Area, about 4 mi. SW of Gridley 23 Comment
  CHSC106886  Matricaria discoidea Lowell Ahart 2011-5-1 17334 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
  CHSC87562  Meconella californica R. D. Fischer 2004-3-28 144 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail below the north-end bluffs of the Disk Golf Course. UTM: 10608453E 4403974N. 311 Comment
  CAS-BOT-BC422640  Meconella californica W. R. Ernst 1958-3-27 215 Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  SEINET10476234  Meconella californica Mary Susan Taylor 1975-3-10 Taylor 407 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC63250  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  RSA754957  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10-50 yards north of the Bears Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC35693  Medicago polymorpha J. D. Jokerst 1982-4-19 1532 Butte Top of North Table Mountain, ca 1/4 mi N of Cherokee Rd at the mesa's E edge. Comment
  CAS-BOT-BC271133  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 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-BC269383  Melica californica John Thomas Howell 1955-6-14 30458 Butte Magalia 731 Comment
  UCD87019  Melica californica A. A. Heller 1918-5-5 13012 Butte Butte county. Near Magalia. Comment
  CHSC94248  Melica fugax Lowell Ahart 2006-7-16 13007 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
  CHSC101464  Melica geyeri L. P. Janeway; Sarah Starkey 2009-7-13 9855 Butte Northern High Sierra Nevada. Northwest side of Concow Road 2.8 air km northeast of upper end of Concow Reservoir, 1.5 road km northeast of Cirby Creek Road. 823 Comment
  CHSC61543  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCR115105  Melica harfordii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  JEPS113283  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side fo North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 52 Comment
  SEINET10599671  Melica torreyana A. Arthur Heller 1902-5-8 Heller 5511 Butte Berry Canon (near Clear Creek). Comment
  CHSC109670  Melilotus albus Lowell Ahart 2012-6-28 18243 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC954  Melilotus indicus A. Koopman 1929-5-7 Butte CSC Campus. 57 Comment
  CHSC111133  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC34144  Melissa officinalis L. Ahart 1981-9-27 3210 Butte On sides of dredger piles ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 294 Comment
  JEPS98512  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  UCR219112  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CAS-BOT-BC428455  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte At Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir 1981 Comment
  CHSC100807  Micranthes aprica R. A. Schlising; L. Janeway 1988-7-1 4550 Butte N part of county: end of road above Summit Lake, on Snow Mountain. Comment
  CHSC34447  Micranthes californica R. E. Preston 1982-2-4 161 Butte Top of cliffs, s rim of Butte Creek Canyon above Honeyrun Covered Bridge, ca. 7.5 mi e of Chico. 289 Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC90594  Micropus californicus var. californicus J. Lund 1980-4-18 66 Butte About 3 mi north of Chico, 0.9 mi east of Hicks Lane on the south side of Keefer Road, approximately 50 ft from the edge of the road. 91 Comment
  CAS-BOT-BC348466  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC348694  Microseris acuminata K. L. Chambers 1952-5-17 411 Butte 9.4 mi. s. of Forest Ranch P. O. on Hwy. 32 from Chico to Lake Almanor, west rim of Little Chico Creek Canyon Comment
  SEINET10475280  Microseris acuminata Lowell Ahart 1985-4-21 Ahart 4879 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CAS-BOT-BC348876  Microseris douglasii subsp. douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  CAS-BOT-BC349165  Microseris elegans Lowell Ahart 1979-5-21 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 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
  POM173673  Mimulus breweri H. F. Copeland 1928-8-17 958 Butte Jonesville. Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  JEPS108856  Mimulus glaucescens Lowell Ahart 2006-5-10 12614 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  RSA795600  Mimulus glaucescens Christopher T. Ivey 2010-6-7 377 Butte Honey Run Road, 7.7 km northeast of bridge crossing Butte Creek, in roadside ditch. 427 Comment
  UC1023693  Mimulus glaucescens F. W. Pennell and A. A. Heller 1940-6-4 25667 Butte above Richardson Springs 182 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  UC196160  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 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
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  UC1609161  Mimulus kelloggii Vernon H. Oswald and Lowell Ahart 1993-3-24 5242 Butte n Pentz historical site (e side of canyon, on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  CHSC44666  Mimulus moschatus R. Banchero 1980-5-12 158 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC62134  Mimulus moschatus L. P. Janeway 1993-6-23 4403 Butte Plumas National Forest. Oroville Ranger District. Big Bar Compartment. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  UCD122806  Mimulus moschatus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET10929294  Mimulus moschatus Mary Susan Taylor 1981-5-15 Taylor 3747 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  SEINET10896222  Mimulus pilosus Mary Susan Taylor 1975-10-3 Taylor 938 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
  UC625522  Mimulus tricolor Frank W. Gould 1938-4-23 305 Butte two mi n Chico 60 Comment
  CHSC93350  Minuartia californica Lowell Ahart 2006-5-3 12559 Butte In the center of a shallow vernal pool, 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
  SEINET7072730  Minuartia californica A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC103951  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CAS-BOT-BC388613  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte South of Serpentine Point and above Hwy 70 518 Comment
  CAS-BOT-BC433045  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC99311  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 331 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC113540  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CAS-BOT-BC219949  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC39334  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Along Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC52231  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-16 3023 Butte Ca 1 mi SE on dirt rd that leaves Humbug Summit Rd at Willow Cr. 1950 Comment
  RSA769594  Monardella odoratissima subsp. pallida L. Ahart 2010-9-28 17247 Butte East side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CDA36131  Monochoria vaginalis CDFA Staff Aug 1988 Butte Biggs; Rice Experimental Station. 0 Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  CHSC50557  Montia diffusa Vernon Oswald 1990-7-10 4361 Butte Bryant Ravine Rd 0.25 mi north of Feather Falls Trailhead, ca. 1.5 mi (air) north-northwest of the town of Feather Falls. Scattered plants in disturbed soil along a short track leading to Bryant Ravine Creek. 749 Comment
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  CHSC87533  Montia parvifolia R. D. Fischer 2004-4-20 134 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located adjacent to Big Chico Creek, at bottom of 10 Mile House Road. 198 Comment
  SEINET10572668  Montia parvifolia Mary Susan Taylor 1981-5-11 Taylor 3692 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC108765  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. 42 Comment
  CHSC34187  Muhlenbergia filiformis L. Ahart 1981-9-15 3168 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 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
  SEINET10599802  Muhlenbergia filiformis A. Arthur Heller 1917-7-28 Heller 12833 Butte Moist open places in the yellow pine forest, Butte Meadows. Douglas fir, white fir, and incense cedar are also plentiful, Ceanothus cordulatus and Uva-ursi common shrubs. 1280 Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC51291  Muhlenbergia mexicana Lowell Ahart 1990-10-21 6635 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UC600785  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Jonesville 1828 Comment
  CHSC43129  Muhlenbergia richardsonis Robert Banchero 1981-8-6 637 Butte Ca 3 air miles se of Jonesville. Lake bed. 1853 Comment
  CHSC45423  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte On the sides of a small wash in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC52774  Myosurus minimus Kelly Beane 1981-4-16 3 Butte Ca. 0.5 mi. e of Hwy 99 and The Skyway intersect., 2 mi. e of Chico. Along stream bed. 70 Comment
  CHSC65459  Myosurus minimus Vernon Oswald 1984-3-16 1095 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n boundary of the park 1200 ft e of the Wildwood Ave. entrance. 86 Comment
  RSA0025076  Myriophyllum aquaticum L. P. Janeway, B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  SEINET946127  Myriophyllum hippuroides Verne Grant, Herbert L. Mason 1946-1 13014 Butte Canal near big pond on Sacramento Outing Club. Comment
  CHSC112729  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 miles (air) north of East Biggs. 49 Comment
  CHSC6049  Nandina domestica M. MacArthur 1968-6-12 147 Butte Location: NW side of LS bld. Near the SW end, Chico State College campus. 60 Comment
  CAS-BOT-BC60372  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  JEPS121907  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS107908  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  UC1008733  Navarretia heterandra Lewis S. Rose 1945-5-12 45015 Butte Richardson Springs 304 Comment
  RSA4130  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. 1650 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  SEINET225643  Navarretia leucocephala B. Ertter, Jeff Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  SEINET10496831  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1596 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
  SEINET10902897  Navarretia leucocephala Mary Susan Taylor 1975-4-29 Taylor 539 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC91116  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC43943  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-5-18 3315 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  UCD169102  Navarretia prostrata Ramona Robison 2013-4-15 23 Butte Clay Pit State Vehicular Recreation Area. In disturbed vernal pool located in main riding area. 41 Comment
  CHSC59119  Navarretia pubescens L. P. Janeway; B. Castro 1992-5-9 4166 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. 79 Comment
  JEPS115871  Navarretia pubescens Lowell Ahart 2009-5-23 15727 Butte About 20 yards east fo 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
  CHSC96231  Navarretia subuligera R. Fischer 2006-5-21 997 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants were growing adjacent a seasonal spring on the east side of the Overlook Road. 518 Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  SEINET10935977  Navarretia viscidula subsp. purpurea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4133 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC50992  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  POM65257  Nemophila heterophylla A. A. Heller, H. E. Brown 1902-5-9 11606 Butte Berry Canyon (Near Clear Creek). Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  RSA325124  Nemophila heterophylla M. S. Taylor 1981-3-16 3411 Butte East side of Truex Road, ca. 0.5 miles south of its junction with Highway 70, ca. 7 miles north of Oroville. 305 Comment
  UC196340  Nemophila menziesii A. A. Heller 1914-2-16 11179 Butte 8 mi n Oroville; n of Oroville Comment
  UCD80356  Nemophila parviflora CNPS SN Foothill Team 2005-3-29 SNFN 0026 c Butte CDFG, North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  CHSC103670  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC90799  Nemophila pedunculata Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11554 Butte Butte Creek Ecological Reserve. About 50 yards east of Chico Canyon Road, about 1/2 mile west of Highway 32, about 8 miles northeast of Chico. 242 Comment
  CHSC39095  Nemophila spatulata Robert Schlising; R. Banchero 1980-6-2 3629 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  SEINET10869750  Nemophila spatulata Mary Susan Taylor 1979-3-31 Taylor 1967 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC45988  Nicotiana acuminata var. multiflora Lowell Ahart 1978-6-17 1779 Butte About 1 mile north and 1 mile east of Honcut, about 13 miles south of Oroville. 39 Comment
  CDA5775  Nicotiana acuminata var. multiflora T. C. Fuller 1959-10-2 Butte Feather River drainage, Robinson Street, just west of Marysville Road, Oroville. 0 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  POM202705  Odontostomum hartwegii J. H. Morrison 1932-04 s.n. Butte Durham Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  RSA767794  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian s Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  SEINET10530386  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1991-3-11 Ahart 6642 Butte Near a small wash, in an open pasture field, Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S1. 91 Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  CHSC61330  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte Small bog about 1/8 mile south-west of the Snow Mine, about 2-1/2 miles east of Bald Mountain, about 6-1/2 miles north-east of Stirling City. 1463 Comment
  SEINET10931219  Orthocarpus attenuatus Mary Susan Taylor 1982-4-28 Taylor 4355 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  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
  POM252937  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  CHSC49843  Oxalis corniculata Vernon Oswald 1990-4-11 4162 Butte Upper Miocene Canal between Kunkle Reservoir and the jeep trail cutting down the slope above the West Branch of Lake Oroville. On the downhill side of the canal. 426 Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC94539  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  JEPS115994  Panicum acuminatum var. acuminatum Lowell Ahart 2009-6-3 15832 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC253698  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC253701  Panicum capillare Ira L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles W of Chico Comment
  CHSC34053  Panicum capillare L. Ahart; M. S. Taylor 1981-8-15 3042 Butte On bottom of Snag Lake, on n side of lake, ca. 10 mi n of Inskip. 1500 Comment
  RSA724812  Panicum dichotomiflorum L. Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SEINET10901935  Panicum dichotomiflorum Lowell Ahart 1990-9-30 Ahart 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC43275  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Road gutter, along Highway 70 about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  JEPS124344  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  RSA769674  Parvisedum pumilum L. Ahart 2009-4-22 15603 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET7067155  Parvisedum pumilum A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  CHSC37107  Paspalum dilatatum L. Ahart 1982-10-15 3895 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC66463  Paspalum dilatatum Vernon H. Oswald; Lowell Ahart 1996-6-10 7747 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET10927046  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 40, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC46854  Pectiantia pentandra R. A. Schlising 1998-7-11 4596 Butte N of Crane Valley; near Balsam Creek. Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  JEPS116138  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC3223  Pellaea mucronata Virginia Hagaman 1966-3-28 93 Butte On Table Mountain. Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  SEINET10529811  Pellaea mucronata Mary Susan Taylor 1981-4-5 Taylor 3482 Butte T21N R4E se sec 2; Berry Creek quad. 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, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  UC406903  Penstemon azureus var. angustissimus David D. Keck 1928-6-16 451 Butte 1.5 mi s Berry Creek Inn; Sierra Nevada, s of Berry Creek Inn 609 Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC62138  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-23 4398 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC87976  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  CHSC95213  Penstemon laetus var. leptosepalus R. D. Fischer 2004-6-20 818 Butte Chico Meadows. Norther Sierra Nevada, off Hwy 32, between Lomo and Butte Meadows along Humboldt Road. 1280 Comment
  CHSC97014  Penstemon laetus var. leptosepalus L. P. Janeway 2007-6-19 9063 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River 556 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  RSA109280  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  UC423640  Penstemon laetus var. leptosepalus David D. Keck 1930-7-24 972 Butte near Chaparral; Sierra Nevada 1645 Comment
  CHSC49033  Penstemon neotericus Vernon Oswald; Lowell Ahart 1987-7-1 3052 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  CHSC92744  Penstemon neotericus L. P. Janeway; Barbara Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek 0.6 km east-northeast of its confluence with Camp Creek. 1085 Comment
  CHSC42829  Penstemon personatus L. P. Janeway 1987-6-27 2356 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Mostly on NW-facing roadcut but also scattered on slope immed. above. 1554 Comment
  CHSC30716  Pentagramma triangularis M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  CAS-BOT-BC77136  Pentagramma triangularis subsp. semipallida Lowell Ahart 1975-3-7 s.n. Butte Along road 1/2 mile E. of the Ponderosa Dam on the South Fork of the Feather River, north of Forbestown. Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  RSA769682  Pentagramma triangularis subsp. triangularis L. 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. 382 Comment
  CHSC84394  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the west side of Encina Grande Road, about 50 yards southeast of Truman Journey Way, about 2 miles (air) southeast of of Bloomer Hill, about 6 miles (air) northeast of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CAS-BOT-BC211292  Perideridia gairdneri subsp. gairdneri Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115274  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 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
  CHSC40241  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1898 Butte Philbrook Rd. ca. 0.1 mi e of Humbug Rd. at the road leading to W. Branch Camp. 1463 Comment
  CAS-BOT-BC413703  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CHSC48663  Persicaria lapathifolia Vernon Oswald 1987-8-10 3202 Butte Snag lake located 2.5 mi (air) se of Jonesville. Scattered plants in moist soil on the east side of the reservoir near the normal high-water line. 1726 Comment
  CHSC76004  Persicaria lapathifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8174 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS119938  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 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
  CHSC40595  Phacelia egena Ahart; Jokerst 1985-3-24 4857 Butte Serpentine Point, west of Yankee Hill, around large rock outcroppings. 550 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  UC392196  Phacelia procera E. B. Copeland 1929-7-29 Butte above Jonesville (by creek); Butte Creek 1700 Comment
  POM73566  Phacelia purpusii C. C. Bruce 1898-05 2388 Butte Mountains. Comment
  CHSC56832  Phalaris aquatica J. Lund 1980-4-28 Butte Corner of Pentz Road and Pentz-Magalia Hwy, ca 15 mi south of Chico and 5 mi east of Hwy 99. 91 Comment
  CHSC49564  Phalaris brachystachys Vernon Oswald 1987-5-1 2362 Butte Rancho Aquas Frias. Collected along Goodspeed-Watt Rd. at the Western Canal. 39 Comment
  POM207754  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  CHSC46440  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
  CHSC38676  Philadelphus lewisii Vernon Oswald 1983-5-27 562 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf course and the power lines. 121 Comment
  CHSC45972  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown. 365 Comment
  SEINET10496850  Phlox diffusa Mary Susan Taylor 1978-7-18 Taylor 1713 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 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
  CHSC1305  Phlox speciosa subsp. occidentalis T. Morgue 1932-4-18 Butte Concow Reservoir. 579 Comment
  UCR143102  Phoradendron bolleanum subsp. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia 732 Comment
  CDA13911  Phoradendron densum G. F. Hrusa, T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada; Slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC3576  Phoradendron densum Judy Lee Potter 1966-2-26 Butte 4 miles north Paradise Comment
  CAS-BOT-BC135127  Phoradendron juniperinum Saichi Kawahara 1968-5-5 395 Butte Innskip 1463 Comment
  CAS-BOT-BC141248  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2624 Butte Little Bald Rock 335 Comment
  CHSC31846  Phoradendron villosum L. Ahart 1975-12-18 995 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  RSA755411  Phoradendron villosum L. Ahart 2009-6-30 15959 Butte Open area west of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  CHSC59478  Phyllostachys bambusoides Bryan C. Willingham 1968-12-12 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  UC1563297  Phytolacca americana unknown 1990-9-21 6598 Butte about 2 1/2 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
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Dec 3 2014
  CHSC45290  Pickeringia montana var. montana Vernon Oswald 1985-5-20 1768 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  SEINET10530811  Pinus ponderosa Mary Susan Taylor 1978-9-9 Taylor 1914 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC110983  Pinus rigida Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18268 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC116565  Piperia elongata L. P. Janeway 2015-6-17 11781 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road, 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. Northwest facing slope above the road. 826 Comment
  CHSC103719  Plagiobothrys austiniae Lowell Ahart 2010-5-14 16656 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  UC75319 Image available Plagiobothrys bracteatus Dr. E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  SEINET10497373  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 Ahart 4590 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET263357  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte S of Oregon Gulch Rd ca. 0.5 mi N of the Cemetary ca 1.25 mi W of Rocky Point ca 10 mi E and 3 mi N or Oroville 335 Comment
  JEPS124229  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC28480  Plagiobothrys greenei R. A. Schlising 1979-4-15 3363 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  JEPS108771  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
  CHSC46761  Plagiobothrys nothofulvus Lowell Ahart 1980-4-7 2072 Butte On the north side of Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 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
  UC179566  Plagiobothrys stipitatus A. A. Heller 1914-4-24 11317 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CHSC117421  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20889 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  POM368952  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  RSA485317  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  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
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  CHSC24687  Plantago erecta D. Hattem 1976-4-10 18 Butte Ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 50 m n of Big Chico Creek, ca. 10.2 mi e of Chico. 335 Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  POM61255  Plantago erecta Copeland 1903-4-10 3034 Butte Chico. Comment
  HSC43127  Plantago erecta Maralyn O'Meara 1974-4-20 280 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 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
  CHSC39938  Platanus racemosa M. S. Taylor; V. Oswald 1984-4-4 5376 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC109100  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  JEPS119841  Plectritis ciliosa Lowell Ahart 2012-3-23 17781 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  POM253142  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  SD65551  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 Butte Jonesville 1550 Comment
  CHSC76431  Poa annua Lowell Ahart 1999-10-28 8311 Butte On the west side of a pond, 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
  SEINET10593443  Poa annua Lowell Ahart 1973-2-21 Ahart 154 Butte Dry soil, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CHSC31930  Poa bolanderi J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1037 Butte Top of Humboldt Peak on the E slope ca. 1/4 mi. below summit. Comment
  OBI22115  Poa bolanderi H. F. Copeland 1932-8-19 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest 1700 Comment
  CHSC8602  Poa bulbosa M. Banning 1969-4-9 47 Butte 9 mi. E. Chico on Hwy. 32. 259 Comment
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC76332  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. Near creek. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 750 Comment
  CAS-BOT-BC255787  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico Comment
  CAS-BOT-BC255975  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte North Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 3 mi. E of Honcut, Sierra Nevada 50 Comment
  CDA14065  Poa pratensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13712 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common to dominant in wet meadow drained to N by serpentine outcrop, but not on serp. Perennial, rhizomatous. Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  JEPS106267  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  JEPS110191  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 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
  SEINET10822306  Poa scabrella A. Arthur Heller 1917-4-15 Heller 12678 Butte Treeless plains ten miles north of Chico in adobe soil. 64 Comment
  CHSC28857  Poa secunda subsp. secunda J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 459 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC49568  Poa secunda subsp. secunda Vernon Oswald; Lowell Ahart 1987-5-14 2395 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  CHSC96855  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  RSA141496  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Field near Nelson Comment
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  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  UC598550  Pogogyne zizyphoroides John Bright 1936-5-6 13043 Butte along highway near Chico Comment
  CHSC75992  Polanisia dodecandra subsp. trachysperma Lowell Ahart; Vernon H. Oswald 1999-8-13 8157 Butte Large disturbed 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. 32 Comment
  RSA4227  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  UC600676  Polemonium pulcherrimum E. B. Copeland July, 1930 Butte Big Summit Jonesville, Big Summit 2200 Comment
  JEPS115319  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  UCSB64007  Polycarpon tetraphyllum Ahart, Lowell 1978-6-2 Butte Along the edge of North Honcut Creek; Peter Ahart Ranch; about 1 mile north and 3 miles east of Honcut; about 12 miles south of Oroville 39 Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC37555  Polygala cornuta T. B. Devine 1977-7-24 437 Butte Beside Humbug Road near P.G. and E. ditch about 3/4 mi N of DeSabla. 853 Comment
  UC203665  Polygala cornuta var. cornuta A. A. Heller 1914-7-24 11624 Butte gravelly slopes near Forest Ranch; ; near Forest Ranch, Butte Co. 731 Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds Comment
  SEINET10479328  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4373 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CDA43082  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-2 10780 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC113210  Polygonum aviculare subsp. depressum Lowell Ahart 2014-4-25 19407 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CAS-BOT-BC414191  Polygonum aviculare subsp. depressum Lowell Ahart 1976-9-21 s.n. Butte Along the edge of the road 1/8 mile east of Golden Trout Crossing, a bridge across South Fork Feather Riv; about 3 miles west of Sly Creek Reservoir Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  CHSC63714  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  CAS-BOT-BC414363  Polygonum californicum John Thomas Howell 1962-6-16 37589 Butte 3.5 mi. n. of Pentz 396 Comment
  CAS-BOT-BC414419  Polygonum douglasii Lowell Ahart 1988-7-31 6158 Butte On the north side 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
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CDA22816  Polygonum lapathifolium L. Ahart 2002-10-17 9992 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
  SEINET13711408  Polygonum lapathifolium Lowell William Ahart, Lowell William Ahart 1999-1 8174 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC94265  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 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
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 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
  CHSC50392  Polypogon australis Vernon Oswald 1990-6-2 4279 Butte Oroville Wildlife Area on the northwest side of the Feather River, just upstream from the outlet of Thermalito Afterbay. On the bank of the river. 33 Comment
  JEPS114970  Polypogon australis Lowell Ahart 2008-5-21 14778 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CDA5623  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC45744  Polypogon interruptus S. A. Conley 1986-6-16 41 Butte On n. bank of Western Canal, at jct. with the Midway, 0.8 mi. s of Nelson. 35 Comment
  RSA713014  Polypogon interruptus L. Ahart 2005-12-11 12520 Butte Rice Experiment Station, between the Main Ditch and Stine lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  RSA715583  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC232571  Polypogon monspeliensis Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC232572  Polypogon monspeliensis Lowell Ahart 1977-6-2 1524 Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC24671  Polystichum californicum C. E. Stopher; K. R. Stern 1976-4-13 24 Butte 2.8 km sse of Forest Ranch. 489 Comment
  CHSC28416  Polystichum imbricans M. S. Taylor 1979-10-5 2232 Butte Se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  SEINET10867042  Polystichum imbricans Mary Susan Taylor 1981-3-18 Taylor 3420 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC90203  Polystichum imbricans subsp. curtum Lowell Ahart 2005-1-20 11474 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  CAS-BOT-BC72294  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-6-26 4122 Butte along Ponderosa Way, about 2 miles southeast of the intersection of the Oroville Quincy Highway and Ponderosa Way 500 Comment
  CAS-BOT-BC72298  Polystichum imbricans subsp. imbricans M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock Tunnel 487 Comment
  CHSC116291  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte On south side of Forbestown Reservoir, about 400 yards southeasst of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC33978  Polystichum munitum M. S. Taylor 1981-5-14 3708 Butte 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 Mt House on Oroville-Quincy Hwy. 975 Comment
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  CHSC13715  Populus fremontii M. S. Taylor 1974-10-11 326 Butte Ca. 50 ft e of Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA500429  Potamogeton diversifolius Vernon H. Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the west side of the north end of Cana-Pine Creek Road. 55 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  UCR179421  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Sacramento Valley, Biggs Rice Experimental Station [955 Butte City Hwy(162), 2.5 mi west of Hwy 99] 30 Comment
  CAS-BOT-BC453700  Potamogeton illinoensis Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 50 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  CAS-BOT-BC453738  Potamogeton natans Lowell Ahart 1981-9-21 3198 Butte Along French Creek 1300 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CAS-BOT-BC539450  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC46315  Poteridium annuum Vernon Oswald 1989-6-8 3804 Butte Concow Rd at Flea Valley. On the edge of a meadow. 1118 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. 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
  CDA13269  Prunella vulgaris var. lanceolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13117 Butte Plumas National Forest; on Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CHSC2416  Prunella vulgaris var. lanceolata R. Carter 1965-6-20 243 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd. growing in moist meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC776  Prunella vulgaris var. lanceolata R. M. Staley 1952-7-1 Butte Honey Run. 182 Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC115782  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. 32 Comment
  CAS-BOT-BC159927  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  CHSC52698  Prunus laurocerasus L. P. Janeway 1990-3-25 3658 Butte Campus of California State University, Chico. Along E side of Trinity Hall. 59 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
  CHSC42464  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 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
  SEINET2054141 Image available Pseudognaphalium luteoalbum Marc Mittleman 1980-8-1 221 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  CAS-BOT-BC357590  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC25290  Pseudognaphalium thermale M. S. Taylor 1977-7-15 1419 Butte Along w branch of Feather River ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  UC1609224  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch Comment
  SEINET10475180  Psilocarphus oregonus Mary Susan Taylor 1979-5-6 Taylor 2003 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC28822  Psilocarphus tenellus var. tenellus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 414 Butte Top of north Table Mt, ca 1.0 mi nw of Cherokee Rd. Roadsides and vernal pools. 381 Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC60976  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek's Reservoir. 1188 Comment
  POM220019  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville. 1524 Comment
  SEINET4853257  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC6647  Punica granatum M. MacArthur 1968-6-16 342 Butte Chico State College campus. NW side of Aymer Jam Hamilton School. 60 Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CAS-BOT-BC462602  Pyrola dentata H. F. Copeland 1938-8-8 s.n. Butte Jonesville, near Kennedy's Meadow Comment
  JEPS119837  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC92544  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  HSC23322  Quercus douglasii D. G. Schmale 1971-5-25 32 Butte Off Skyway Rd. 8 mi W of Paradise 396 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
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CHSC110993  Quercus ilex Lowell Ahart; L. Hanson, S. Bazell, J. Guardino,W. Dempsey 2012-6-7 18175 Butte On the south side of the paved park road, south of Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC31424  Quercus kelloggii L. Ahart 1980-9-10 2625 Butte Along the edge of Bean Creek Rd, ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  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
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  SD129646  Ranunculus bonariensis var. trisepalus Barbara Ertter, Lowell Ahart 1986-4-13 5901 Butte ca 2 airmiles NNE of Honcut between Oroville and marysville, Peter Ahart Ranch 29 Comment
  CHSC29235  Ranunculus hebecarpus M. S. Taylor 1980-4-1 2424 Butte On bluffs above Covered Bridge and s of Butte Creek, ca. 5 mi e of Chico. 182 Comment
  CHSC31383  Ranunculus muricatus J. D. Jokerst 1979-4-20 1205 Butte Along the banks of a creek. Top of North Table Mt., ca. 200 met. N of Cherokee Rd. at the E edge of the mountain. 403 Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  UC204949  Ranunculus occidentalis A. A. Heller 1914-6-22 11498 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  SEINET12100630  Ranunculus occidentalis L. S. Rose 1939-1 39235 Butte Strawberry Valley 1219 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  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
  RSA268750  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC43498  Ranunculus pusillus Lowell Ahart 1979-5-20 1882 Butte On the edge of a depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  JEPS123886  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  SEINET12080672  Ranunculus pusillus Unknown 1974-1 444 Butte Peter Ahart Ranch, about 2 mi N and 1/2 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  UC1594623  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC52694  Ranunculus uncinatus var. uncinatus Kirsten Tarp 1983-8-6 334 Butte Near Butte Meadows, on Bull Hill Rd. 0.2 mi from its jct with Humboldt Rd. Near creek. 1325 Comment
  JEPS115273  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  RSA31115  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC33718  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-4-8 3505 Butte Serpentine ridge on n side of logging landing site just w of power lines, off logging road ca. 0.5 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CHSC20055  Rhus aromatica M. S. Taylor 1975-4-25 505 Butte Scattered on Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC25111  Rhus aromatica D. Russell Droege 1970-4-13 30 Butte At ca. 300 yards from eastern termination of Upper Bidwell Park rd. ca. 200 yds. north of Big Chico Creek, Chico. Comment
  SEINET3118940 Image available Ribes cereum E. B. Copeland 1931-1 645 Butte Jonesville, Kirby's Meadow 1800 Comment
  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  UC79695  Ribes nevadense T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  RSA0024709  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  CAS-BOT-BC198953  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  SEINET13942865 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC48903  Ribes viscosissimum var. hallii Vernon Oswald 1987-6-9 2968 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
  HSC73109  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd., ca. 0.5 mi. S of its junction with Ponderosa Way, ca. 20 air mi. N of Oroville 854 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CAS-BOT-BC74463  Rorippa curvisiliqua Lowell Ahart 1986-11-9 5451 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles SW of Oroville. 36 Comment
  CHSC98978  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2008-5-8 14714 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 Comment
  JEPS108924  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 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
  CHSC110994  Rosa Lowell Ahart 2012-6-9 18181 Butte On the south side of the pond, east of the South Rim Trail, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  JEPS104092  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Rd, ca 3 mi south of the Brush Creek Work Center, ca 15 mi (air) ne of Oroville. 1015 Comment
  SEINET10904100  Rosa californica Mary Susan Taylor 1980-5-24 Taylor 2747 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC106059  Rosa multiflora Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  CHSC29764  Rosa pisocarpa subsp. ahartii M. S. Taylor 1980-5-24 2747 Butte Peter Ahart Ranch, along Rocky Honcut Creek, Honcut. 50 Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  SEINET11688672  Rostraria cristata T. B. Devine 1980-1 719 Butte at jct of Pentz Rd & Pentz-Magalia Hwy Comment
  CAS-BOT-BC156611  Rubus bifrons M. S. Taylor 1982-5-22 4506 A Butte Graylodge Waterfowl Refuse, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CAS-BOT-BC148351  Rubus laciniatus Clarence R. Quick 1962-8-19 62 -81 Butte Coyote Gap-Four Trees Road, Plumas National Forest Comment
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  JEPS114984  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte about 5 yards N of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetary, about 10 mi (air) NE of Oroville 305 Comment
  CAS-BOT-BC422137  Rumex californicus Lowell Ahart 1982-9-13 3816 Butte Along the edge of 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
  JEPS94633  Rumex obtusifolius Lowell Ahart 1998-7-1 8034 Butte about 7 air mi n Oroville (e of cow chute and on e side of Cherokee Rd.); North Table Mountain 403 Comment
  SEINET10479441  Rumex pulcher Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4145 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom 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
  CHSC35030  Sagina apetala A. W. Ratcliff; R. A. Schlising 1980-4-6 3551 Butte About 5 miles S of Chico along Oroville/Chico Road, near its jct with Nead Road. In vernal pool at roadside. Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  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
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  JEPS113284  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  CHSC55806  Sagittaria latifolia var. obtusa Vernon H. Oswald; Lowell Ahart 1991-8-28 4855 Butte Gravel road 0.5 mile south of Richvale East Rd, 0.25 mile west of Hwy 99 and the Thermalito Afterbay, on the north boundary of the Richvale Vernal Pools. 33 Comment
  CHSC2051  Sagittaria montevidensis subsp. calycina R. Morford 1931-5-5 Butte Irrigation ditch near Compton's. 54 Comment
  LA208601  Salix eastwoodiae E. B. Copeland; 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750.0 Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CHSC8626  Salix exigua E. L. Smith 1969-3-29 Butte 2 Mi. SE Chico. Comment
  JEPS107337  Salix exigua Lowell Ahart 2005-4-2 11696 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
  RSA715886  Salix exigua L. Ahart 2005-4-2 11696 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  RSA0045618  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-9 17828 Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 111 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  CDA38813  Salix gooddingii L. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC108871  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southwest of the intersection of south rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  RSA0058980  Salix gooddingii Lowell A. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  CHSC7061  Salix lasiolepis Lynn R Thomas 1969-5-8 112 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  RSA28802  Salix lasiolepis A. A. Heller 1914-4-27 11324 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC129586  Salix lasiolepis var. lasiolepis A. A. Heller 1915-4-20 11858 Butte In the digger pine and oak belt, 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  LA208858  Salix lemmonii E. B. Copeland; 1931-8-1 620 Butte Jonesville 1700.0 Comment
  UC600412  Salix lemmonii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  CAS-BOT-BC129488  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte Chico, on banks of Butte Creek Comment
  CHSC42545  Salix melanopsis Lowell Ahart 1987-4-30 5491 Butte North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC103226  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road. 63 Comment
  CHSC7039  Salvia sonomensis L. Kimbley 1969-5-4 9 Butte Ca. 300 yds ne of Chico Airport, 4 mi n of Chico. Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  CAS-BOT-BC235068  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC101262  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC92566  Sanicula bipinnata L. P. Janeway 2005-3-10 8356 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC66267  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte W end of county dump on N side of Neal Rd., about 1 mi. E of Hwy. 99, about 7 mi. S of Chico 76 Comment
  SEINET10939821  Sanicula bipinnata Mary Susan Taylor 1981-5-5 Taylor 3618 Butte T20N R6E ne sec 11. Forbestown quad. E side of spur rd off 21N35Y, ca. 0.5 mi SE of Feather Falls trailhead, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  UCD128003  Sanicula bipinnata M. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  CHSC23641  Sanicula bipinnatifida M. S. Taylor 1976-3-30 1038 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UC875445  Sanicula bipinnatifida Lewis S. Rose 1937-6-10 37367 Butte Forbestown 838 Comment
  JEPS108822  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC44269  Sanicula tracyi V. Oswald; L. Ahart 1988-6-17 3394 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC7052  Sanicula tuberosa F. Kimball 1969-4-15 43 Butte 100 yds. w of Foster Rd., 1.5 mi s of Skyway. Paradise. 396 Comment
  CHSC79646  Sanicula tuberosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13749 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  UC1605153  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte N of Oroville (S wall of Flag Canyon near top of an old track from bottom of canyon onto NW edge of North Table Mountain) 341 Comment
  SBBG26811  Sarcodes sanguinea E. B. Copeland 1931-7-1 Butte Jonesville Comment
  SD3536  Sarcodes sanguinea John Copeland 1931-7-1 Butte Jonesville 1550 Comment
  UC474244  Sarcodes sanguinea H. F. Copeland 1929-6-11 Butte Jonesville Comment
  UC1212527  Saxifraga odontoloma H. F. Copeland 1932-8-22 Butte vicinity of Jonesville (se of crest of Butte Creek); Lassen National Forest Comment
  UC1602228  Saxifraga oregana H. F. Copeland jun 1929 1240 Butte Jonesville 1524 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS117892  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road 123 Comment
  SEINET10454697  Scandix pecten-veneris Lowell Ahart 1985-4-1 Ahart 4875 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
  SEINET12121860  Scandix pecten-veneris Unknown 1985-1 4875 Butte along Table Mountain Boulevard, near Cambell Overflow, a little S of intersection of Hwy 70 & 149 100 Comment
  CHSC30069  Sceptridium multifidum R. A. Schlising; R. Banchero 1980-6-6 3656 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of its junction with Oroville-Quincy Hwy at Brush Creek. Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CAS-BOT-BC111369  Schoenoplectus acutus var. occidentalis John Thomas Howell 1959-9-20 34651 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC36302  Schoenoplectus acutus var. occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4367 Butte Graylodge Waterfowl Refuge, s side of lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 19 Comment
  POM181779  Schoenoplectus acutus var. occidentalis H. F. Copeland 1923-6-4 354 Butte Nelson. Comment
  UCD49962  Schoenoplectus mucronatus Carl Wick 1983-6-1 s.n. Butte CA. Butte Co. Comment
  CHSC56801  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3073 Butte Canyon of Philbrook Creek; seep just above the High Lakes Road 3.4 mi west of the pass. 1905 Comment
  CAS-BOT-BC110844  Scirpus microcarpus Herbert Faulkner Copeland 1920-8-1 167 Butte Tonesville meadow 1219 Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 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
  RSA82375  Scutellaria siphocampyloides F. W. Peirson 1926-6-21 6773 Butte Butte Meadow, Humboldt Road. Comment
  CHSC24648  Scutellaria tuberosa S. Deaton 1976-4-14 16 Butte Small population 1 7/8 mi n of Feather Falls parking lot, n side of Falls trail. 853 Comment
  CHSC796  Scutellaria tuberosa M. Davidson 1929-3-22 Butte Near Paradise. 457 Comment
  CHSC90598  Sedella pumila Lisa J. Newsum 1984-4-19 15 Butte Cohasset Rd., 1/2 mi s of Keefer Rd. and Cohasset Rd. jct., 10 1/2 mi ne of Chico. 91 Comment
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  CAS-BOT-BC61496  Sedum albomarginatum M. S. Taylor 1982-6-21 4489 Butte On north side of Hwy 70 along Pulga Rd. near Pulga Bridge over Feather River. 20. miles NE of Oroville. 487 Comment
  CHSC34802  Sedum radiatum M. S. Taylor 1981-4-2 3474 Butte E side of Coutelenc Rd, n side of Spur Rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. 701 Comment
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  SEINET10470991  Selaginella hansenii A. Arthur Heller 1902-5-6 Heller 5466 Butte Berry Canon, near Clear Creek. Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  SEINET6336387  Selaginella hansenii J. T. Howell 1959-9-20 34716 Butte Feather River Highway at West Branch Bridge. Comment
  CHSC48045  Selaginella wallacei L. P. Janeway 1984-10-7 1178 Butte Big Bald Rock. 975 Comment
  CHSC33577  Senecio aronicoides M. S. Taylor 1981-4-16 3546 Butte W side of 21N33Y.1, ca. 0.5 mi n of is jct with Zink Rd near Big Bald Rock, ca. 3 mi e of Lake Madrone. 1036 Comment
  RSA712950  Senecio eurycephalus var. lewisrosei L. Ahart 2006-5-10 12616 Butte Bardees Bar Road, about 100 yards north of poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of pulga. 355 Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS94732  Senecio sylvaticus Lowell Ahart 1998-6-3 7966 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC27967  Senecio triangularis M. S. Taylor 1978-7-19 1743 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC69107  Senecio triangularis Lowell Ahart 1997-8-1 7767 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  HSC68223  Senecio vulgaris J. P. Smith 1973-3-22 5923 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC73741  Sericocarpus oregonensis B. Castro; L. Hanson 1996-8-22 717 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge, near overlook to Seven Falls on short S-trending ridge. 944 Comment
  CAS-BOT-BC364728  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 883 Comment
  CAS-BOT-BC364731  Sericocarpus oregonensis subsp. californicus John Thomas Howell 1959-9-26 35094 A Butte At Pulga Bridge, North Fork of the Feather River Comment
  CAS-BOT-BC243561  Setaria parviflora Lowell Ahart 1987-9-24 5899 Butte Along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  CHSC105952  Setaria viridis Lowell Ahart 2010-9-24 17237 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  RSA724995  Setaria viridis L. Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC29016  Sherardia arvensis M. S. Taylor; J. D. Jokerst 1980-4-4 2462 Butte On W side of La Porte Rd, ca. 2 mi N of Bangor. 335 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  JEPS100687  Sidalcea Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15381 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  CHSC116992  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  CHSC43351  Sidalcea calycosa Lowell Ahart 1979-5-7 1860 Butte Along and near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC33518  Sidalcea gigantea R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4140 Butte NE part of county, E of Fork of Feather River and NE of Coyote Gap. On Four Trees Road. 1447 Comment
  SEINET7055655  Sidalcea gigantea Dean W. Taylor 1995-8-6 15397 Butte Flora of the Northern Sierra Nevada. Near Concow Reservoir, about 6 miles east of Paradise, along Hoffman Road 0.3 miles west of Concow Road. Lassen National Forest. Elevation about 2200 feet. Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  POM253295  Sidalcea hartwegii A. A. Heller 1938-4-17 15040 Butte Stony slope back of the Salmon Hole Chico creek east of Chico Comment
  SEINET10838742  Sidalcea hirsuta Mary Susan Taylor 1978-5-7 Taylor 1617 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10937544  Sidalcea malviflora subsp. celata Mary Susan Taylor 1978-7-21 Taylor 1834 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
  CHSC93502  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 336 Comment
  CHSC101677  Silene laciniata subsp. californica Lowell Ahart 2009-4-26 15624 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico. 286 Comment
  CAS-BOT-BC389291  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock 914 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  CHSC91476  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  UC852931  Silene occidentalis subsp. longistipitata A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  SEINET13095564  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC115421  Silybum marianum Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail near golf course. 89 Comment
  CAS-BOT-BC74932  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS110130  Solanum americanum Lowell Ahart 2006-9-28 13377 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
  JEPS124332  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC39934  Solanum parishii M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC76963  Solanum parishii Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  JEPS115842  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CDA6222  Solanum scabrum W. Sauer, L. Heinricks 1974-9-11 Butte Stirling City. 0 Comment
  SEINET10546692  Solanum umbelliferum Mary Susan Taylor 1984-4-6 Taylor 5413 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET10971230  Solidago californica Mary Susan Taylor 1979-10-5 Taylor 2234 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 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
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  CAS-BOT-BC365839  Soliva sessilis Lowell Ahart 1980-5-17 2280 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC8153  Sonchus asper Dave Isle 1969-5-17 479 Butte On meadow to N. of Upper Bidwell Park road just E. of Bare Hole turn-off. 59 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC424  Sonchus oleraceus J. Turner 1930-5-14 Butte Chico Creek road. 76 Comment
  CAS-BOT-BC158895  Sorbus scopulina Lowell Ahart 1983-8-16 792 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows 1450 Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 Comment
  CHSC224  Spergula arvensis subsp. arvensis M. Anthony; L. Ahart 1963-5-15 Butte Honcut. 32 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC45749  Spergularia rubra L. P. Janeway; C. A. Janeway 1986-9-13 1855 Butte Along Humbug Summit Rd at Cold Springs. Mdw. 1965 Comment
  CHSC50665  Spergularia rubra Lowell Ahart 1990-4-28 6470 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  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
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  UC2026894  Spiraea Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC11996  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville. At 'the Summit. 2100 Comment
  SD2172  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit. 2100 Comment
  CHSC42800  Spiraea douglasii L. P. Janeway 1987-6-8 2168 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  UCSB63841  Spiraea douglasii Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC38893  Spiranthes porrifolia Vernon Oswald 1983-6-9 654 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1400 ft e of Salmon Hole Parking Area. 182 Comment
  CHSC88186  Spiranthes romanzoffiana Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
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Sep 6 2011
  CHSC42985  Stachys ajugoides var. rigida L. P. Janeway 1987-7-4 2407 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC65573  Stachys ajugoides var. rigida R. Banchero 1980-7-28 314 Butte Upper margins of Chico Meadows. Ca 1 mi N of jcn of Humboldt Rd and the Skyway, ca 6 mi NE of jcn Humboldt Rd and Hwy 32. 1322 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  POM193437  Stachys rigida subsp. rivularis E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  SEINET11934433  Stellaria crispa L. Ahart, Ahart, P. 1984-1 Butte About 1.5 mi SE of Bald Mt., 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  RSA0041907  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 490 Butte Jonesville. 1524 Comment
  CHSC26854  Stellaria longipes var. longipes M. S. Taylor; M. Hayes 1978-6-24 1655 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its juct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC113349  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC45566  Stellaria nitens Lowell Ahart 1985-3-24 4862 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 518 Comment
  CHSC65336  Stellaria obtusa Lowell Ahart 1995-10-3 7675 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  CHSC43197  Stephanomeria lactucina Robert Banchero 1981-6-29 544 Butte 1.7 air mi w of Pulga. 926 Comment
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  HSC73016  Stipa stillmanii M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  CHSC44959  Streptanthus diversifolius Pamela A. Mallen 1987-4-10 10 Butte On Table Mt. ca. 0.5 mi w of Cherokee Rd., 5.8 mi ne of Table Mt. Blvd. Oroville. 426 Comment
  UC725557  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  UCD164225  Streptanthus drepanoides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 302 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 303 Comment
  CHSC39408  Streptanthus longisiliquus L. Ahart 1983-9-17 4434 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. 1100 Comment
  CHSC94104  Streptanthus longisiliquus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UCD164178  Streptanthus longisiliquus N. Ivalu Cacho; Sharon Y. Strauss 2010-8-28 IC-SS 177 - Butte Humboldt Rd: 3.2 mi off Hwy 32, going to Butte Meadows. 1417 Comment
  CAS-BOT-BC87429  Streptanthus polygaloides John Thomas Howell 1955-6-14 30460 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS108792  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CAS-BOT-BC87510  Streptanthus tortuosus Lowell Ahart 1987-5-9 5597 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River, about 3 miles SW of Pulga. 365 Comment
  CHSC38020  Streptanthus tortuosus R. A. Schlising 1982-8-1 4366 Butte E of Stirling City at Table Mountain; at N end of mountain. 1859 Comment
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. Comment
  CHSC58895  Streptanthus tortuosus var. tortuosus Lowell Ahart 1992-7-29 6872 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  CHSC116205  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  CAS-BOT-BC98092  Symphyotrichum spathulatum V. Oswald; L. Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996