Search Results — 2000 specimen records retrieved (1585 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
  CHSC4577  Abies concolor C. Glascock 1965-2-6 218 Butte 0.55 mi from highway 70, and 40 yds ne of Rd 24N23. Comment
  UC818137  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows Comment
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  CHSC93  Acer macrophyllum V. Holt 1948-4-14 Butte Cohasset road 10 mi. past Richardson Springs turnoff. 487 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  UCSB62939  Acer macrophyllum Sarr, Dan 1995-7-29 Butte 5 mi of Forest Ranch on Highway 32 1000 Comment
  CHSC111727  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC6000  Acer palmatum M. MacArthur 1968-6-19 272 Butte Lawn in front of ADM. bld., near main entrance, Chico State College. 60 Comment
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  CHSC39262  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1 1/2 miles south-east of Stirling Ciry. Section 4. 1100 Comment
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  RSA416297  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, four miles West of Paradise, overlooking Butte Creek Canyon. Comment
  CHSC113449  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UCD103797  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11675 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CAS-BOT-BC204848  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, abou 3 1/2 miles south-west of Pulga 365 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC86139  Acmispon grandiflorus var. macranthus John Dittes 2002-6-29 627 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC90502  Acmispon parviflorus Doug Burcombe 1988-4-20 18 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  UC2026864  Actinidia arguta Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18232 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  RSA122230  Adenostoma fasciculatum var. fasciculatum A. E. Wieslander 1936-3-30 626 Butte Keefer Ridge 549 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC9263  Adiantum jordanii D. C. Burns 1971-4-9 129 Butte Abundant ca. 1 mi e of the intersection of Manzanita Ave. and Centennial Ave. (lower Big Chico Creek Canyon, called the fern banks). 82 Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  RSA739615  Aegilops triuncialis L. P. Janeway, B. Castro 2007-5-19 8978 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 88 Comment
  CAS-BOT-BC29617  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CHSC71255  Agoseris heterophylla var. cryptopleura Lowell Ahart 1998-7-1 8024 Butte About 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
Read comments
Jan 19 2011
  CHSC29301  Agoseris retrorsa J. D. Prouty 1980-4-17 80 .69 Butte E of Yankee Hill Road. 518 Comment
  JEPS95966  Agrostis avenacea Lowell Ahart 1999-6-12 8088 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  UC1594714  Agrostis exarata Lowell Ahart 1992-8-2 6907 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  SEINET10789979  Agrostis exarata Lowell Ahart 1982-1 Ahart 3823 Butte On damp red granite soil & on a steep shaded road bank along dirt road by Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam, ca. 1/2 mi NW of Strawberry Valley. Yellow Pine Forest. 1100 Comment
  SEINET10507085  Agrostis exigua Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4166 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  SEINET10661070  Agrostis hendersonii Lowell Ahart 2007-5-22 Ahart 13899 Butte T21N, R6E, southeast 1/4 Section 30. On Big Bald Rock, about 14 miles (air) northeast of Oroville. 956 Comment
  CHSC42906  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles south-west of Forbestown. 670 Comment
  RSA129697  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  CAS-BOT-BC138420  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CHSC29993  Aira elegans L. Ahart 1980-4-13 2079 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA0058867  Albizia julibrissin Lowell A. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  JEPS82253  Allium amplectens Roger Raiche 1983-4-13 30188 Butte slope above Honey Run Covered Bridge (Honey Run Road) Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  POM110215  Allium amplectens C. C. Bruce 1897-03 1898 Butte [No locality information provided] Comment
  SBBG17107  Allium amplectens M. Vincent 1960-4-15 176 Butte Pentz Rd, 12 mi S of Paradise Comment
  UC142746  Allium amplectens Mrs. R. M. Austin May 1896 736 Butte Comment
  CHSC46417  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  SEINET12048121  Allium campanulatum M. Ownbey, Ownbey, G. B. 1946-1 2940 Butte below Jonesville Comment
  UCD138462  Allium cratericola C. D. Snider 1975-4-20 25 Butte Table Mountain: 7 mi. S of Hwy 70, Cherokee Road 5 mi S of Cherokee. 0.5 mi NW of road. 381 Comment
  CHSC115474  Allium hyalinum L. P. Janeway 2015-3-9 11635 Butte Sacramento Valley. Just north of the Thermalito Forebay North Picnic Area. 72 Comment
  JEPS122447  Allium hyalinum L. P. Janeway 2015-3-9 11635 Butte Sacramento Valley. Just north of the Thermalito Forebay, North Picnic Area. Quad: Oroville 7.5' Comment
  CHSC36954  Allium membranaceum R. Schlising; R. Banchero 1980-6-5 3639 Butte N of Lake Oroville along Hwy 70, ca 3 mi S of the Pulga Crossing of Feather River. 640 Comment
  CHSC74029  Allium membranaceum B. Castro; Plumas NF botanists 1997-6-13 743 A Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  CHSC46070  Allium obtusum var. obtusum J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1781 Butte At the summit of Bald Rock Dome (Middle Fork Feather River) at its south edge. Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CAS-BOT-BC132074  Allium peninsulare var. peninsulare A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville Comment
  CAS-BOT-BC132076  Allium peninsulare var. peninsulare Lowell Ahart 1989-5-10 6210 Butte Near a dirt road, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  UCD80417  Allium peninsulare var. peninsulare CNPS SN Foothill Team 2005-5-26 SNNR 0204 Butte City of Chico, Upper Bidwell Park, off of the Guardian Trail SE of the intersection with the Humboldt Trail. 340 Comment
  RSA112747  Allium peninsulare var. peninsulare E. K. Balls, Lee W. Lenz 1955-5-13 20696 Butte About 1 mile NE of Pentz trading post on road to U. S. highway 40. From Oroville-Magalia road. 305 Comment
  CHSC25543  Allium sanbornii var. sanbornii R. Schlising 1977-7-20 3197 Butte Magalia, just off the Skyway. 670 Comment
  JEPS87858  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS117691  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  CHSC20717  Alnus incana subsp. tenuifolia M. S. Taylor 1975-8-31 886 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC138036  Alopecurus carolinianus Lowell Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. Found growing in our grain fields. 50 Comment
  CAS-BOT-BC138039  Alopecurus carolinianus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC50703  Alopecurus carolinianus Lowell Ahart 1990-6-16 6517 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
  CHSC8196  Alopecurus saccatus D. McClain 1969-4-18 59 Butte 1/2 mi. n.w. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  JEPS127214  Alopecurus saccatus Lowell Ahart 2016-5-17 20837 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  JEPS98447  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  UCD80510  Alopecurus saccatus CNPS SN Foothill Team 2005-4-12 SNFN 0077 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET10507155  Alopecurus saccatus Lowell Ahart 1991-5-16 Ahart 6654 Butte On the bottom of a small shallow vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  JEPS96093  Amaranthus blitoides Vernon H. Oswald and Lowell Ahart 1996-6-10 7751 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the E side of Fish Camp, Riparian Sanctuary. 28 Comment
  CHSC66894  Amaranthus deflexus Vernon H. Oswald 1996-10-12 8299 Butte Chico, Sewer Ponds on Chico River Rd., ca. 4.5 mi W of Chico. 41 Comment
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  UCR219095  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2009-9-5 15572 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CAS-BOT-BC142951  Amelanchier utahensis A. A. Heller 1915-6-11 11963 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC142955  Amelanchier utahensis Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 miles north of the Lost Creek Dam 1005 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS104209  Ammannia robusta Lowell Ahart 2003-6-19 10294 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA0045595  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. 269 Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  CHSC108839  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. 154 Comment
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  JEPS117149  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  RSA754453  Amsinckia intermedia L. Ahart 2009-4-17 15545 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  UC726541  Amsinckia intermedia A. A. Heller 1942-4-10 16420 Butte Oroville Road just e of Butte Creek Bridge Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC727048  Amsinckia lycopsoides A. A. Heller 1941-4-19 16067 Butte n side of Sandy Gulch, Lindo Channel (along roadside edge of a field on the road to Bidwell Park) Comment
  CHSC37419  Amsinckia menziesii var. menziesii R. Cushman 1972-5-5 10 Butte West side of Chico State campus along the railroad tracks adjacent to tennis courts. 64 Comment
  CHSC77490  Anagallis arvensis Anna Pinsky 1997-4-30 26 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, above Big Chico Creek. 45 Comment
  CHSC67154  Ancistrocarphus filagineus James D. Jokerst 1992-4-14 3345 Butte Stone Ridge Ranch survey for Heritage Partners and landowner Jon Bechtel. E of Cohasset Hwy. and Chico Municipal Airport. 91 Comment
  UCD56050  Andropogon glomeratus M. S. Taylor 1977-11-12 1532 Butte Sierra Neveda, in Foothill Woodland in seep area on north side of Upper Bidwell Park Rd., Chico. 213 Comment
  SEINET12121868  Angelica breweri Unknown 1985-1 5151 Butte along the Forbestown Ditch about 2.5 mi NE of Forbestown 869 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC65533  Antennaria argentea L. P. Janeway 1995-6-1 4769 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CAS-BOT-BC84696  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  CDA14338  Anthriscus caucalis Harrie D. Riley 1995-4-19 Butte Muir and Kennedy avenues, Chico. 0 Comment
  CHSC36168  Anthriscus caucalis G. H. Snodgrass 1981-4-11 PT- 12 Butte Ca. 5 mi e of Chico, ca. 200 yds e of Rockwood Lake entrance on Honeyrun Rd. (previously Humbug Rd.). Comment
  JEPS107279  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 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
  CHSC28432  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-10-5 2230 Butte On se side of Paradise Lake, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC38681  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1983-6-9 660 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 256 Comment
  CHSC42964  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1987-7-3 5787 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC84169  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2003-7-10 10370 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC35695  Aphyllon purpureum J. D. Jokerst 1982-4-19 1531 Butte Top of North Table Mt, S of and adjacent to the second E-W oriented drainage N of Cherokee Rd at the mesa's E edge. 365 Comment
  SEINET10833598  Aquilegia formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC52189  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 296 Butte Ca. 2.0 mi. E of Brush Creek near Indian Creek. 856 Comment
  JEPS110080  Arabis rectissima var. rectissima Lowell Ahart 2006-7-16 12969 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC128718  Arbutus menziesii Ira L. Wiggins 1925-3-22 1562 Butte Above Oroville Comment
  SEINET10449214  Arbutus unedo Mary Susan Taylor Taylor 334 Butte Campus of the California State University, Chico. 61 Comment
  SEINET10837606  Arceuthobium abietinum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 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
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  UC444991  Arceuthobium campylopodum E. B. Copeland July, 1930 Butte w Willow Creek 1500 Comment
  RSA629063  Arctostaphylos Jon E. Keeley 1983-6-27 7817 Butte Highway 70 and Magolia Pentz Road. Comment
  CAS-BOT-BC24439  Arctostaphylos manzanita Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6300 Butte On Pentz Rd. near Kunkle Reservoir. Comment
  RSA632989  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632994  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27466 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET10940291  Arctostaphylos manzanita Mary Susan Taylor Taylor 994 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC24415  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-2-16 s.n. Butte Table Mountain 8 mi. n. of Oroville. Comment
  UC195402  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte e Chico; canyon of Big Chico Creek Comment
  UC725980  Arctostaphylos mewukka A. A. Heller 1942-1-18 16350 Butte Pentz-Magaia Rd one mi e Bille Road; Paradise Comment
  CAS-BOT-BC38527  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51109 Butte Paradise. Skyway just ne. of Billie Rd. 609 Comment
  CAS-BOT-BC38575  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15502 Butte On the Neal Rd. w. of Optimo Lodge, Paradise. Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  POM193357  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  UCD40394  Arctostaphylos patula Rodney Gale Myatt 1971-6-13 721 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC47380  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51100 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  RSA134788  Arctostaphylos viscida subsp. viscida P. C. Everett, E. K. Balls, George B. Everett 1959-10-20 23908 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  UC145952  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico; bank of sloughs Comment
  SEINET4342628  Aristida oligantha B. Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut along La Porte Road Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  HSC65302  Aristolochia californica J. P. Smith 1973-3-22 5917 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CDA34696  Artemisia douglasiana L. Ahart 2009-11-19 16554 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. Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  CHSC76398  Artemisia douglasiana Lowell Ahart; Vernon H. Oswald 1999-10-3 8292 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC3204  Asclepias cordifolia Gerry Carrauthers 1966-4-23 122 Butte Ca. 9.5 mi. E. of city of Chico on Highway 32. Comment
  CHSC39421  Asclepias cordifolia J. D. Jokerst 1984-5-24 2030 Butte North Table Mountain. Edge of Beatson Hollow ca 250 meters north of Cherokee Rd. along the wooded west edge of the canyon. 350 Comment
  CHSC4695  Asclepias cordifolia R. Carter 1966-4-26 370 Butte Found ca. 7 mi. E of Oroville at intersection of Olive Hwy. and Wyandotte-LaPorte Rd. 243 Comment
  SEINET10496162  Asclepias fascicularis Lowell Ahart 1985-6-30 Ahart 5074 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC44365  Asclepias speciosa Lowell Ahart 1988-6-29 6112 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  HSC44928  Asparagus officinalis J. P. Smith, J. O. Sawyer 1973-4-13 6037 Butte Under cultivation at the J.O. Sawyer Sr. residence in Chico Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  UC1609394  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  UCD80287  Astragalus gambelianus CNPS SN Foothill Team 2006-3-22 SNNR 1175 Butte CDPR Oroville State Recreation Area. 295 Comment
  SEINET10452225  Astragalus gambelianus Lowell Ahart 1985-3-22 Ahart 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  CHSC12922  Astragalus pauperculus J. A. Roberts 1973-4-4 3 Butte Ca. 200 yds n of Upper Bidwell Park Road, and 0.25 mi e of East Ave., Chico. 60 Comment
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  JEPS87417  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CHSC27912  Athyrium filix-femina M. S. Taylor 1978-7-19 1737 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CAS-BOT-BC17451  Athysanus pusillus Lowell Ahart 1988-3-28 5948 Butte About 0.1 mile south of Lumpkin Ridge Road, about 1.5 mile east of Camp 18, aobut 8 miles east of Feather Falls. 1280 Comment
  CHSC108857  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte On the west 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
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  SEINET10479057  Atriplex argentea subsp. expansa Lowell Ahart 1983-9-19 Ahart 4451 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
  UCD97511  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley. Comment
  UC203847  Avena barbata A. A. Heller 1914-3-18 11207 Butte along small stream 8 mi n Oroville (near w base of Table Mt.) Comment
  CHSC4350  Avena fatua M. Hillier 1966-5-29 Butte Parallel to Manzanita Ave. Chico. Comment
  RSA713001  Avena fatua L. Ahart 2005-12-11 12515 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
  CHSC2123  Avena sativa H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. Chico. 57 Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC117705  Azolla microphylla Lowell Ahart 2016-9-4 21342 Butte Rice field. Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC41880  Baccharis pilularis subsp. consanguinea Lowell Ahart 1986-10-16 5403 Butte About 1 mile southwest of the Ponderosa Dam, about 3 miles northwest of Forbestown. 457 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  SEINET10448246  Barbarea orthoceras Mary Susan Taylor 1978-7-19 Taylor 1754 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC94387  Bergia texana Lowell Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CDA15321  Bergia texana D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS108975  Bidens frondosa Lowell Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA0035339  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC45375  Bistorta bistortoides Vernon Oswald 1987-7-13 3114 Butte Near the intersection of a Forest Service road and the sw branch of Butte Creek, ca. 1 mi (air) se of Summit Lake, ca. 1 mi (air) e of Snow Mt, ca. 4.75 mi (air) se of Jonesville. 1853 Comment
  UCSB63606  Blennosperma nanum Peek, Jeffrey 1982-4-18 Butte Ca. 5 mi. ne of jct. of Hwy. 99 and Skyway, ca. 6 mi. sw of Paradise, ca. 100 yds n of Skyway Comment
  UCD114301  Boechera arcuata Robert E. Preston 1985-4-4 510 Butte ca. 0.5 mi SW of Mayaro. 585 Comment
  CHSC103971  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CAS-BOT-BC16034  Boechera breweri subsp. shastaensis A. A. Heller 1920-3-28 13359 Butte Canyon of Chico Creek below the Ten Mile house. Comment
  CHSC33468  Boechera platysperma R. E. Preston 1981-7-14 110 Butte Ridgetop. Ca. 4.8 km e of Jonesville. 2050 Comment
  CHSC33633  Boechera platysperma R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 112 Butte N ridge of Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  SEINET10973128  Boisduvalia glabella Mary Susan Taylor 1980-7-6 Taylor 3054 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CAS-BOT-BC145682  Brachypodium distachyon John Thomas Howell 1962-6-16 37622 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC111973  Brachypodium distachyon Lowell Ahart 2012-6-2 18143 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC8190  Brachypodium distachyon Dave Isle 1969-5-20 476 Butte 10 yards S. of the road through upper Bidwell Park, 50 yards W. of the turn-off to Bear Hole. 59 Comment
  JEPS115997  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards 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 232 Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC28530  Brickellia californica M. S. Taylor 1979-9-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  SBBG128018  Briza maxima L. Ahart 2010-5-14 16636 Butte W side Hwy 32, just N of the entrance to the Disc Golf Area, upper Bidwell Park, ca. 5 mi (air) NE of Chico 376 Comment
  CHSC49510  Briza minor Vernon Oswald 1985-5-13 1754 Butte Upper Bidwell Park, Chico, on the rocky bed of Chico Creek at the retaining wall at the e end of Centennial Ave. 85 Comment
  POM112996  Briza minor C. C. Bruce 1897-04 1886 Butte Butte Creek Comment
  UC1130947  Briza minor J. E. Sowder 1933-6-20 87 Butte 1 1/4 mi nw Yankee Hill; Chico Comment
  UC203848  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 mi n Oroville (along streams and low places) Comment
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  RSA32795  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte Near the Chico Airport Comment
  CAS-BOT-BC482216  Brodiaea californica subsp. californica A. A. Heller 1938-5-22 15106 Butte Plentiful near Chico airport Comment
  UC843925  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte near Chico airport Comment
  POM196552  Brodiaea californica var. californica H. F. Copeland 1929-5-4 1156 Butte Canyon of Chico Creek. Comment
  UC768717  Brodiaea coronaria subsp. coronaria R. F. Hoover 1937-5-19 2246 Butte 10 mi nw Chico 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
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  CAS-BOT-BC483078  Brodiaea elegans subsp. elegans Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CHSC2093  Brodiaea minor E. R. Washburn 1930-4-1 Butte Comment
  CHSC2417  Brodiaea minor R. Carter 1965-6-15 229 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. Along W side of road, North Table Mt., ca. 8 mi. N of Oroville. 335 Comment
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  UCD147859  Brodiaea nana Robert E. Preston 2005-5-9 2340 a Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 80 Comment
  RSA726808  Bromus carinatus L. Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CAS-BOT-BC156294  Bromus caroli-henrici Lowell Ahart 1984-5-31 4656 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC156296  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, Honcut. Peter Ahart Ranch, about 1 mile north and 0.25 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS106156  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  SEINET10523276  Bromus catharticus Hillier 1966-5-30 Hillier s.n. Butte In cultivated lawn by drive on the corner of W. Sacremanto Ave, and the Esplanade. Chico. Comment
  CAS-BOT-BC156027  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  HSC97191  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley, N of Spruce St., S of railroad bridge. 28 Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CDA42866  Bromus hordeaceus L. Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC61532  Bromus hordeaceus Lowell Ahart 1993-6-20 7005 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CDA30201  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 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
  CHSC31708  Bromus madritensis subsp. madritensis L. Ahart 1970-4-20 45 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC93449  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 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
  RSA654633  Bromus orcuttianus G. Fred Hrusa, T. D. Wilfred 1996-7-8 13090 Butte Near Old railroad Grade Rd., Paradise Lake Dam, Approx. 3 m. N of Magalia 800 Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC161962  Bromus rubens John Thomas Howell; Gordon H. True 1967-6-11 42561 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  CAS-BOT-BC161617  Bromus sterilis Lowell Ahart 1983-7-29 4238 Butte Sierra Nevada. Along the edge of the dirt road, ca. 0.5 mile east of Milsazp Bar, ca. 25 miles northeast of Oroville. 500 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  CHSC107590  Bulbostylis capillaris Lowell Ahart 2011-7-9 17572 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  JEPS87443  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  JEPS122070  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC98948  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC11059  Calandrinia ciliata var. menziesii Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC21073  Callitriche heterophylla var. bolanderi M. S. Taylor 1975-4-26 529 Butte In small pool on e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC31554  Callitriche heterophylla var. bolanderi L. Ahart 1973-5-24 228 Butte In a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113215  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 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
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC114988  Callitriche marginata Lowell Ahart 2015-4-28 20062 -A Butte 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
  SEINET10972756  Callitriche marginata Mary Susan Taylor 1980-3-15 Taylor 2379 A Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC40593  Calocedrus decurrens Lowell Ahart 1985-9-18 5168 Butte About 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 914 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  CHSC2510  Calochortus albus W. Fitzwater 1958-4-19 Butte Neal Grade, Chico area. 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
  CAS-BOT-BC489973  Calochortus leichtlinii C. C., Mrs. Bruce 1897-7-1 s.n. Butte Mountains Comment
  HSC66348  Calochortus leichtlinii M. S. Taylor, Jim Jokerst, L. Ahart 1980-8-2 3208 Butte Humboldt Peak, top and W side trail 2155 Comment
  CAS-BOT-BC437678  Calochortus luteus Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  POM292446  Calochortus nudus J. W. Morrison 1929-06 s.n. Butte Oroville to Quincy, Sierra Nevada mountain range, Feather River watershed 1829 Comment
  POM109611  Calochortus superbus C. C. Bruce 1897-05 2117 Butte Butte Creek. Comment
  CAS-BOT-BC494321  Calochortus tolmiei C. C., Mrs. Bruce 1898-5-1 2407 Butte Mountains Comment
  SEINET12048526  Calochortus tolmiei Unknown 1978-1 12 Butte 4 yd E of Hwy 70, 15.6 mi NE of Hwy 149, in Feather River Canyon 549 Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  UCD129711  Calycadenia multiglandulosa L. Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  SEINET11842848  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Ahart, P. 1984-1 4687 Butte ca 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetery, ca 10 mi E of Oroville 500 Comment
  CAS-BOT-BC106121  Calycadenia oppositifolia Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise, in an open area about 1/4 mi N of Kunckle Res. 500 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
  CHSC62526  Calycadenia oppositifolia B. Castro 1993-7-7 470 Butte Ca 2.5 mi SSW of Big Bar Mtn. On the N side of USFS Rd 22N84. 944 Comment
  JEPS105637  Calycadenia oppositifolia L. P. Janeway, John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle 277 Comment
  JEPS98426  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  CHSC26701  Calycadenia truncata M. S. Taylor; M. Hayes 1977-8-16 1453 Butte On N side of Clear Creek next to the newly built bridge (population partially destroyed by the construction), Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC27559  Calycadenia truncata Robert A. Schlising 1977-10-9 3207 Butte NE of Chico on Cohasset Road, 3.0 mi NE of jct road to Richardson Springs and 3.3 mi NE crossing of Mud Creek. Comment
  JEPS15906  Calycadenia truncata R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of, Chico Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 Comment
  CHSC174  Calycanthus occidentalis Agnes Riker 1897-5-1 Butte Comment
  UC176138  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte 8 mi n Oroville; Table Mountain 182 Comment
  UC129117  Calyptridium monospermum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC54300  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald; Lowell Ahart 1991-6-5 4654 Butte Ca. 0.5 miles west of Hwy 32 on logging road 200-G, ca 1 mile north of Platte Mtn Lookout, between Forest Ranch and Lomo. 914 Comment
  CHSC48299  Calystegia malacophylla Vernon Oswald 1983-8-17 981 Butte Humboldt Summit on Humboldt Road, NE of Jonesville at the junction of Butte, Tehama and Plumas Counties. 1999 Comment
  CHSC66383  Calystegia occidentalis subsp. occidentalis Vernon H. Oswalk; Lowell Ahart 1996-6-17 7811 Butte Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy 36 ca 7 mi w of Susanville.Modoc Plateau. Growing on slop at 6.0 mile post E of Dvils Corral Trailhead. 1420 Comment
  CHSC46226  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1061 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  RSA456171  Campanula prenanthoides H. F. Copeland 599 Butte Jonesville. 1524 Comment
  RSA699700  Campanula prenanthoides L. Ahart 2004-7-11 11247 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  CHSC113310  Capsella bursa-pastoris Lowell Ahart 2014-4-16 19360 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  UCD114531  Cardamine Robert E. Preston 1983-2-7 380 Butte above the SW bank of McCabe's Creek, at its junction with Lumpkin Road, 10 miles E of Oroville. 371 Comment
  UCD114501  Cardamine californica R. E. Preston 1982-3-20 188 Butte at sides of Highway 70, 1.4 miles NE of Jarbo Gap, 17 miles NNE of Oroville. 670 Comment
  CHSC94092  Cardamine californica var. integrifolia R. Fischer 2005-1-1 683 Butte Chico. Collected from Bidwell Park, adjacent 10 Mile House Road, at the north end of park property and east side of Big Chico Creek. 219 Comment
  CHSC32739  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-4-14 3534 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 914 Comment
  HSC100727  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte E side of Hwy. 99, ~1 mi. S of Gridley. 27 Comment
  JEPS115289  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley 27 Comment
  CHSC101155  Carduus pycnocephalus Lowell Ahart 2009-5-15 15691 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC109607  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-5-14 18050 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC77165  Carex G. F. Hrusa; T. D. Wilfred 1997-5-7 13737 Butte In riparian zone of Little Butte Creek above Magalia Reservoir, N of Magalia, immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 720 Comment
  JEPS122028  Carex Lowell Ahart 2014-7-2 19537 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SEINET10935491  Carex Mary Susan Taylor 1981-5-6 Taylor 3626 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC45073  Carex abrupta Vernon Oswald 1987-7-13 3112 Butte Near Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. At the turn-around at the end of the spur road on the n side of the lake. 1901 Comment
  NY25081  Carex abrupta A. A. Heller 1913-6-7 10820 Butte West branch of the North Fork of the Feather River near Stirling 914.4 Comment
  CAS-BOT-BC17810  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte Sierra Nevada. Along French Creek. 1300 Comment
  CHSC37757  Carex angustata J. D. Jokerst; R. A. Schlising 1982-10-7 1649 Butte West of and adjacent to the Skyway (not conspicuous from road) 1.1 miles south of Inskip. 1432 Comment
  SEINET7549688 Image available Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. Pulga quad. 1091 Comment
  SD468  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville; about the edges of the Lily Pond, a permanent pool; warm in the summer. 1700 Comment
  CHSC11936  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  SEINET7551511 Image available Carex barbarae Unknown 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. Oroville Dam 7.5' quad. Comment
  CHSC95995  Carex bolanderi L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  JEPS117694  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET10706538  Carex bolanderi Lawrence P. Janeway 1987-5-10 Janeway 2049 Butte T23N, R4E, Stirling City Quad, SW 1/4 of sec 3. Near edge of man-made pond along road that crosses West Branch Feather River 5 miles from Stirling. In east-facing slope of mixed conifer forest. 853 Comment
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  CHSC43912  Carex fracta L. P. Janeway 1987-6-26 2308 Butte Above Camp Cr, 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
  JEPS113289  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side fo North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 52 Comment
  SEINET7560148 Image available Carex gracilior L. P. Janeway, Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Oroville Dam Quad 7.5' quad. Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oroville, 2.1 km east of the Bidwell Bar Bridge, next to Craig Saddle Boat-in Campground. 290 Comment
  SEINET8068024 Image available Carex gracilior Unknown 2009-1 24617 Butte C 0.5km N of North Honcut Creek, 12 miles SE of Oroville, northern Sierra Nevada Foothills (n SNF). Comment
  CHSC52867  Carex hirtissima L. P. Janeway 1989-5-13 3239 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  UC1748285  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road 1749 Comment
  CHSC113469  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC77821  Carex inversa Lowell Ahart 2000-3-25 8324 Butte In the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CAS-BOT-BC7780  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte three miles southeast of Butte Meadows. 1554 Comment
  CAS-BOT-BC7781  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Along French Creek 1300 Comment
  CHSC34168  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC45747  Carex laeviculmis L. P. Janeway 1988-6-19 2839 Butte 3.3 mi N of Stirling City towards Inskip along logging rd 0.2 mi W of The Skyway. 1219 Comment
  CHSC92369  Carex laeviculmis Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10501 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262), (WGS84). 1551 Comment
  CHSC11934  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CHSC44997  Carex lemmonii S. C. Morey 1983-8-4 704 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC45057  Carex multicaulis Vernon Oswald 1984-4-9 1131 Butte Feather Falls Trail, 1.9 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  UC532223  Carex multicaulis H. F. Copeland 1931-6-10 1546 Butte woods between Willow Creek and Colby Creek; Jonesville Comment
  SEINET3904180  Carex multicaulis L. W. Swift 1934-5-8 106 Butte Plumas National Forest, south of. Challenge, CA.; 0 914 Comment
  CAS-BOT-BC119744  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1848 Butte Jonesville quad. Along Humbug Rd. ca 1.5 mi SW of Humbug Summit. 1859 Comment
  SEINET7568665 Image available Carex nebrascensis Unknown 2004-8-15 8244 Butte Butte Meadows 7.5' quad. High Cascade Range, meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC44692  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3063 Butte Philbrook canyon, 0.7 mi W of the pass. 1920 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  JEPS116090  Carex nudata Lowell Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC88364  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC46420  Carex praegracilis Lowell Ahart 1989-5-28 6283 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC48558  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3088 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CAS-BOT-BC117019  Carex straminiformis V. Oswald; Lowell Ahart 1971-8-22 18423 Butte Ca 5 mi (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC45244  Carex subfusca S. C. Morey 1983-8-3 691 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA0080127  Carex texensis Lowell Ahart 2012-6-14 18182 Butte Chico. At the entrance to Lower Bidwell Park, east of Woodland Avenue. 61 Comment
  CHSC33772  Carex vernacula J. D. Jokerst; L. Ahart, M. S. Taylor, H. Wurlitzer 1981-7-31 1040 Butte Top of Humboldt Peak ca 50 meters N of summit, northern-most portion of Butte County. Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  SEINET10549992  Castilleja Mary Susan Taylor 1980-4-6 Taylor 2434 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 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-BC249112  Castilleja affinis Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  SEINET12326984  Castilleja affinis Unknown 1984-1 13 Butte Oroville, S side of Pacific Heights Rd, 1 mi SW of junction with Ophir Rd 46 Comment
  CHSC55411  Castilleja applegatei subsp. pinetorum Dennis W. Morris 1991-4-7 12 Butte 9 mi northeast of Chico at Hwy 32 and Crown Point Road; west side of Crown Point Road. 502 Comment
  CHSC93980  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 771 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. Boy Scout Camp. 1371 Comment
  UC196055  Castilleja applegatei subsp. pinetorum A. A. Heller 1914-7-23 11646 Butte edge of forest about Chico Meadows 1219 Comment
  CAS-BOT-BC255462  Castilleja applegatei var. pinetorum Peter H. Raven 1954-4-17 6619 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest 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. 371 Comment
  CHSC31820  Castilleja attenuata L. Ahart 1974-4-11 375 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SD111899  Castilleja attenuata Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3274 Butte Peter Ahart Ranch ca 2I(c) mi NE of Honcut between Oroville and Marysville, plowed grainfiled, Valley Grassland 29 Comment
  UCD122348  Castilleja campestris R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W. of Oroville. Comment
  CHSC109654  Castilleja exserta subsp. exserta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC90141  Castilleja exserta subsp. exserta Dennis Chambers 1981-4-24 16 Butte Cal State Chico Range approximately 1.7 mi north on Meridian Road off of Hwy 99, east 0.7 mi on north side of road. 65 Comment
  CHSC115280  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CHSC81312  Castilleja tenuis J. Trizzino 2001-4-25 51 Butte Humbug Road, 6 mi north of Steel Bridge, west facing hillside. 914 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  CHSC37450  Caulanthus lasiophyllus L. Ahart 1982-5-29 3445 Butte Peter Ahart Ranch, ca. 1.5 mi n and 2 1/4 mi e of Honcut. 50 Comment
  CHSC96968  Ceanothus diversifolius Lowell Ahart; Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  SD7267  Ceanothus integerrimus Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  SEINET10493644  Ceanothus lemmonii Mary Susan Taylor 1980-5-8 Taylor 2593 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  RSA0028435  Ceanothus lemmonii M. M. Boney 1897-1 1724 Butte Foothills 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
  UC1071269  Ceanothus prostratus P. L. Johannsen 1936-7-16 925 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  POM136667  Ceanothus ramulosus A. A. Heller 1902-5-7 s.n. Butte Berry Canyon (Near Clear Creek). 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
  CAS-BOT-BC52421  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC108985  Celtis australis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue. Lower Bidwell Park, Chico. 80 Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  JEPS115270  Centaurea solstitialis Lowell Ahart 2009-5-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  RSA770101  Centaurium muehlenbergii L. Ahart 2008-11-4 15402 Butte Sides of Potter Ravine, below high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 243 Comment
  CHSC116736  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte 50 yards north of the ditch, about 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CHSC649  Centaurium tenuiflorum A. Anderson 1963-7-7 Butte Near Golf Course. 76 Comment
  CDA38375  Centaurium tenuiflorum L. Ahart 1998-7-1 8025 Butte 100 yards south of an east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC288534  Centromadia fitchii John Thomas Howell 1959-9-20 34682 Butte Eastern outskirts of Oroville 60 Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC8615  Cephalanthera austiniae Burgon 1968-7-2 Butte Soda Springs Camp Ground. 1127 Comment
  UCD138894  Cephalanthera austiniae Kenneth D. Stewart 1965-7-15 s.n. Butte State Highway 32, around 15 miles north of Forest Ranch. Comment
  CHSC94262  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet 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
  CHSC118501  Cerastium glomeratum L. P. Janeway 2016-5-9 11954 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CAS-BOT-BC388266  Cerastium glomeratum Lowell Ahart 1980-5-4 2181 Butte Thermalito 65 Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CAS-BOT-BC179535  Cercis occidentalis Ahart Lowell 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  UCSB16652  Cercis occidentalis Vincent, M. 1961-3-30 Butte Honeyrun Road, one half mile west of Paradise 609 Comment
  CAS-BOT-BC137004  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  UC600735  Chaenactis douglasii var. douglasii E. B. Copeland 1930-7-1 Butte above Jonesville 2000 Comment
  UC1586578  Chaenactis glabriuscula var. megacephala Vernon H. Oswald and Lowell Ahart 1991-6-5 4645 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  HSC66093  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz Vernal Pool, 0.4 mi. SE of Jct. Pentz Rd. and Hwy. 99, about 10 mi. S of Chico 55 Comment
  CHSC113196  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 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
  CHSC38439  Chamaesyce maculata Vernon Oswald 1983-6-27 768 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  CHSC47424  Chamaesyce maculata Lowell Ahart 1975-7-19 898 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC75997  Chamaesyce maculata Lowell Ahart; Vernon H. Oswald 1999-8-13 8160 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94603  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  CHSC97268  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2007-8-19 14492 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC31677  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1975-7-5 851 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  UC1562273  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-7-4 6542 Butte 1/5 mi sw Enterprise Bridge (near McCabe Creek, below high water line); Lake Oroville 243 Comment
  CAS-BOT-BC69476  Cheilanthes cooperae Wayne D. Dakan 1974-4-15 s.n. Butte Near bridge at West Branch of Feather River on Hwy. 70. Comment
  SEINET10867074  Cheilanthes intertexta Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5212 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  CHSC93970  Chimaphila menziesii R. D. Fischer 2004-6-20 751 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CHSC49527  Chloris virgata Vernon Oswald 1983-7-3 799 Butte Located at the n-e corner of Calif. Hwy 32 and W. Lindo Ave. in Chico. Roadside, along edge of almond orchard. Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET3450920  Chondrilla juncea Unknown 2003-7-10 10372 Butte Forbestown, Forbestown, about 2 miles air northwest 290 Comment
  RSA104166  Chorizanthe membranacea R. M. Austin 1883-1 s.n. Butte [No location data on label] Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail. 426 Comment
  UCD99938  Chorizanthe stellulata W. R. Powell 1968-4-23 1469 Butte 2 miles south-southeast of Oroville. 71 Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  SD3366  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 Butte 1500 Comment
  SD5925  Cirsium andersonii E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  SEINET10971148  Cirsium coulteri Mary Susan Taylor 1975-6-30 Taylor 821 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 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
  CAS-BOT-BC285724  Cirsium vulgare Lowell Ahart 1982-8-10 3739 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 Comment
  CAS-BOT-BC228760  Cistanthe umbellata Lowell Ahart 1982-6-15 3559 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  SEINET10865742  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-B Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  CDA35619  Clarkia concinna J. R. Keck Jr. 1978-5-23 PDR# 330033 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC3275  Clarkia concinna subsp. concinna M. L. Hillier 1966-5-11 Butte On a ledge above Honeyrun Rd. 2.4 miles e. of covered bridge. Comment
  RSA712993  Clarkia concinna subsp. concinna L. Ahart 2006-5-19 12636 Butte 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. 406 Comment
  CDA38047  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte 0.1 mile north of bridge over North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC171881  Clarkia gracilis subsp. gracilis Lowell Ahart 1980-4-30 2125 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC171885  Clarkia gracilis subsp. gracilis Lowell Ahart 1983-6-26 4142 Butte Along Ponderosa Way, just a little south of the East Fork of Canyon Creek, 14 miles north-east of Oroville, Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC1732065  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte 0.5 mi N of Mountain House (along Road 22N49 1.2 mi SW of Fourmile Ridge Road (Road 22N33)) 853 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  JEPS109585  Clarkia mosquinii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville, along Forest Road 20N24) 975 Comment
  UCD77552  Clarkia purpurea subsp. purpurea Robert E. Preston 2002-6-7 1809 Butte 8 miles NE of Oroville, along Openshaw Road, 0.8 mile W of Gold Run Creek 82 Comment
  CAS-BOT-BC163638  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8 7/10 mi. below Magalia on Oroville Road 365 Comment
  CHSC56557  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3981 Butte Road-shoulder/top-of-fill of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. 512 Comment
  CAS-BOT-BC172381  Clarkia purpurea subsp. viminea Lowell Ahart 1984-5-28 4650 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  CAS-BOT-BC164776  Clarkia rhomboidea Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CHSC43559  Clarkia rhomboidea Lowell Ahart 1979-5-29 1910 Butte Near the edge of a dirt road, about 1/2 mile east of Kunkle Creek and Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  SEINET10453164  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4118 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
  CHSC39353  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte On the road cut-banks along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  UC1586588  Clarkia unguiculata Vernon H. Oswald and Lowell Ahart 1991-5-31 4636 Butte drainage on ne side Sycamore Hill (along the roadbed on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation Area 76 Comment
  CHSC52114  Claytonia palustris B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 149 Butte 0.95 mi into Coon Hollow below campground, in meadow on n side of Coon Creek. 1664 Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  JEPS109961  Claytonia palustris Dean W. Taylor 2006-9-20 19644 Butte Coon Hollow; Coon Hollow Creek at confluence with West Branch Feather River 1615 Comment
  CHSC34766  Claytonia parviflora subsp. grandiflora Diane M. Reilly 1980-4-11 4 Butte 20 ft e of creek, ca. 1/2 mi s on dirt road off Big Bend Rd, ca. 2 mi se of Hwy 70, ca. 27 mi n of Oroville. 621 Comment
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC34764  Claytonia perfoliata subsp. perfoliata S. Scott 1981-4-24 Butte 1 km e of Manzanita Ave, and Centennial Ave intersection on Centennial Ave; ca. 2.5 mi e of Chicol 97 Comment
  CHSC32135  Claytonia rubra subsp. rubra L. Ahart 1977-3-28 1228 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43722  Claytonia rubra subsp. rubra Vernon Oswald 1987-3-30 2302 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 65 Comment
  CHSC56075  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-19 2841 Butte 3.4 mi north of Stirling City towards Inskip; along logging road 0.2 mi west of and parallel to Skyway. 1219 Comment
  CHSC90178  Clematis lasiantha Ross L. Jones 1989-4-12 22 Butte Ca. 200 m s of Butte Creek and 400 m e of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  SEINET10536027  Clematis lasiantha Mary Susan Taylor 1977-11-12 Taylor 1543 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET12089666  Clematis lasiantha Unknown 1977-1 18 Butte 100 ft S of Cohasset Rd., 10.5 mi WNW of Chico, 13 mi from CSUC Comment
  CAS-BOT-BC92579  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 280 Comment
  CHSC52785  Clematis ligusticifolia R. A. Schlising 1981-8-8 4191 Butte Concow area n of Oroville, near n end of Concow Reservoir. At roadside. Comment
  CHSC2252  Clintonia uniflora 1932-6-26 Butte Rag Dump. 1066 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  CHSC114647  Collinsia greenei Vivian Paarker 1993-6-16 17 -21 Butte Yolla Bolly Ranger District. Serpentine ridge above and north of Snake Lake, north of FS road 28N10. 1260 Comment
  CHSC87451  Collinsia heterophylla R. D. Fischer 2004-3-28 85 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on slope along tr. connecting south end of Disk Golf Course to the Guardian Trail. 411 Comment
  SD4528  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville, damp spot under brush 1650 Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC93069  Collomia heterophylla L. P. Janeway 1994-5-26 4654 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank. 1226 Comment
  CHSC41369  Collomia tinctoria R. A. Schlising; Sandra Morey 1982-8-31 4381 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  UC600657  Collomia tinctoria H. F. Copeland 1937-9-4 954 Butte Jonesville Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10544540  Comandra umbellata subsp. californica Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5373 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CAS-BOT-BC285920  Conyza bonariensis Lowell Ahart 1974-11-21 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 Comment
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  JEPS66511  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2768 Butte 1.5 mi w Butte Meadows (at Thatcher Ridge road junction) 1280 Comment
  CHSC66075  Cornus glabrata Vernon H. Oswald 1996-5-22 7627 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing in the edge of a slough at the SE corner of the Riparian Sanctuary. 28 Comment
  CHSC90089  Cornus nuttallii Brent E. Palmer 1991-4-4 16 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  RSA123068  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mile south of Butte Meadows. 1341 Comment
  UC600763  Cornus sericea subsp. sericea H. F. Copeland 1931-6-11 Butte by Scotch John Creek in Butte Creek Canyon Jonesville; Butte Creek Canyon, Scotch John Creek Comment
  SEINET10863881  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5143 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. 21 Comment
  CDA24604  Corydalis caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC41922  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows. Small bogs near a small stream that flows into Butte Creek. 1450 Comment
  UC177586  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek Sierra Nevada Mts., Butte Creek 1500 Comment
  JEPS98413  Cotula australis Lowell Ahart 2000-3-25 8323 Butte NE of Oroville Post Office (waste area near the W side of the Ehmann Home) 36 Comment
  CHSC78141  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  JEPS120654  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC31653  Crassula connata L. Ahart 1973-3-16 177 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  CHSC31166  Crassula tillaea M. S. Taylor; J. D. Jokerst 1980-3-28 2403 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CHSC36970  Crassula tillaea M. S. Taylor; L. Ahart, J. D. Jokerst 1982-4-28 4372 Butte Graylodge Wildlife Refuge, around parking lot 5, ca. 1 mi s of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC42487  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS119698  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  JEPS124167  Crassula tillaea Lowell Ahart 2015-3-26 19967 Butte About 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC103025  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UCR219265  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-9-5 15588 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  JEPS98714  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CDA1935  Crypsis alopecuroides L. Ahart 2006-9-1 13302 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. Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  SD4203  Cryptantha torreyana E. B. Copeland 1929-7-29 Butte Jonesville 1700 Comment
  CHSC40347  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 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
  SEINET10966023  Cupressus macnabiana John G. Lemmon 1895-12-2 Lemmon s.n. 1895 Butte Magnalia Comment
  RSA718398  Cuscuta californica L. Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  CHSC113968  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  CHSC88163  Cymopterus terebinthinus var. californicus Lowell Ahart 2004-8-2 11334 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. 1912 Comment
  CHSC116115  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte Crack in the paved road, strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  CDA34640  Cyperus eragrostis L. Ahart 2009-6-3 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC102719  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC37388  Cyperus eragrostis R. A. Schlising 1980-8-31 3977 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC42934  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 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
  CHSC4294  Cyperus eragrostis R. Jaegel 1966-5-16 Butte Drainage of Golf Course Lake, Upper Bidwell Park. Comment
  SEINET191614  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 miles E of Honcut. 137 Comment
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  JEPS103335  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  UCR263569  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS95881  Cyperus fuscus Lowell Ahart 1999-8-13 8181 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA795668  Cyperus iria L. Ahart 2012-8-6 18415 Butte West side of Richvale South Highway, about 1.5 miles south of Richvale. 31 Comment
  CHSC68396  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-12 1924 Butte Canyon of North Fork Feather River near Heinz Creek; at a small side creek and seeps along Hwy 70 about 2 mi east of the Pulga turnoff. 441 Comment
  CHSC45128  Cyperus rotundus Vernon Oswald 1987-7-5 3093 Butte Rancho De Farwell. E. side of Sacramento River just upstream from Golden State Island (perhaps technically in Glenn Co. because of shifting channel). 33 Comment
  CHSC55606  Cyperus squarrosus L. P. Janeway; C. A. Janeway 1986-10-4 1904 Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  UC572227  Cyperus squarrosus H. S. Yates 1936-8-13 6101 Butte Butte Meadow Paunes Creek Quad., Butte Meadow 1341 Comment
  CAS-BOT-BC114201  Cyperus strigosus Lowell Ahart 1987-9-24 5901 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CAS-BOT-BC114210  Cyperus strigosus John Thomas Howell 1959-9-20 34636 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC28667  Cyperus strigosus J. D. Jokerst 1979-10-12 373 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Park Rd. 213 Comment
  RSA755341  Cyperus strigosus L. Ahart 2009-8-13 16276 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC114205  Cyperus strigosus Lowell Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  CHSC39304  Cystopteris fragilis Lowell Ahart 1983-6-26 4130 Butte Along Ponderosa Way, about 2 miles south-east of the inersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC68042  Cystopteris fragilis Clarence R. Quick 1952-7-1 52 -123 Butte Sierra Nevada - Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  SD81976  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte Jonesville 1800 Comment
  SEINET10906973  Cytisus monspessulanus Mary Susan Taylor 1981-5-5 Taylor 3613 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC28557  Dactylis glomerata M. S. Taylor 1978-7-21 1815 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 548 Comment
  CAS-BOT-BC189898  Danthonia californica Clarence R. Quick 1963-7-16 63 -42 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  JEPS120989  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards W of a wet meadow, about 40 yards N of Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  SEINET10900654  Danthonia unispicata M. E. Banning 1969-4-18 Banning 85 Butte Junction of Pentz Rd. and Pentz Magalia Rd. Soil dry and rocky, abundant. 305 Comment
  CHSC116979  Datura wrightii Matthew Forster 2013-5-20 Butte 25 meters on east side of Sacramento River, along River Rd., Chico. 38 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SEINET10873897  Daucus pusillus Lowell Ahart 1985-5-15 Ahart 4985 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET10536233  Delphinium Mary Susan Taylor 1981-5-5 Taylor 3608 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  UCD69668  Delphinium Laura Tanata 1982-4-18 24 Butte East side of road on Highway 70, 4.2 miles south of Grand Avenue exit; valley grassland community dominated by grasses, on a dry, sunny, gravel terrace; common erect herb scattered throughout, 4 1/2 dm tall, flower purple. 35 Comment
  CAS-BOT-BC8564  Delphinium hansenii C. C., Mrs. Bruce 1897-6-1 1913 Butte unspecified Comment
  CHSC31843  Delphinium hesperium L. Ahart 1978-5-24 1743 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101032  Delphinium hesperium subsp. pallescens John Dittes; Josephine Guardino 2007-4-22 1445 Butte Great Central Valley; Northern Sacramento Valley; ca. 6.1 air miles northwest of Chico (municipal airport tower), ca. 1.1 air miles southeast of intersection of State Hwy 99 and Broyles Road, ca. 0.8 air mile northwest of intersection of State Hwy 99 and Cana Hwy; east side of Hwy 99. 60 Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC21259  Delphinium nudicaule M. S. Taylor 1973-4-23 20 Butte 6 mi ne of Chico on Cohasset Hwy, ca. 20 ft n of horse trough. 237 Comment
  UC600482  Delphinium nuttallianum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC121615  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine Comment
  CHSC3986  Delphinium patens subsp. patens Kathy Sommarstrom 1967-4-15 28 Butte Found 400 yds west of covered bridge, 50 yds from creek on south side. 76 Comment
  CHSC56778  Delphinium patens subsp. patens J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte South side of Olive Hwy 0.4 mi southwest of its junction with Forbestown Road; ca 6.0 air mi east of Oroville. Comment
  CAS-BOT-BC121611  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC90040  Delphinium variegatum Rebecca L. Hill 1990-4-8 11 Butte Ca. .5 mi se of jct of Oroville Chico Hwy and Mesa Road. W side of Oroville Chico Hwy, ca. 6 mi se of Chico. 47 Comment
  CDA24274  Delphinium variegatum subsp. variegatum T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  SBBG29993  Dendromecon rigida A. A. Heller 1938-6-14 105 Butte Feather River Hwy, about 1 mi W of Jarboe Gap 609 Comment
  SEINET10970988  Dendromecon rigida Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4188 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CAS-BOT-BC192650  Deschampsia danthonioides Lowell Ahart 1980-5-4 2170 Butte Thermalito 65 Comment
  CHSC37270  Deschampsia danthonioides L. Ahart 1982-6-15 3562 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC402387  Dicentra formosa subsp. formosa H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  SEINET10508817  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-3 Taylor 2218 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CAS-BOT-BC500056  Dichelostemma capitatum Jim Riley 1923-4-2 s.n. Butte Richardson Springs/. Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  CHSC96791  Dichelostemma capitatum subsp. capitatum Lowell Ahart 2007-5-22 13905 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC501078  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 100 yards south of the dirt rood, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET10533976  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E so sec 25. N side of Humburg Rd., ca 1/4 mile upstream from Honey Run Covered Bridge, ca 7 miles e of Chico. Foothill Woodland; 400 ft. With Tritelia laxa, Daucus pusillus, Allium. Comment
  HSC38064  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2472 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  RSA0060846  Digitaria ischaemum Lowell A. Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC209034  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC209036  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte North of the Oroville Grdiley Highway, about 3 miles east of Gridley 28 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CAS-BOT-BC153763  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC24985  Diplacus angustatus R. W. Conover 1975-5-7 1 Butte .7 mi ne of Chico Municipal Airport, .4 mi se of Cohasset Hwy on Cohasset Ridge. 304 Comment
  OBI49343  Diplacus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge Griffith residence, 4.4 mi NE of Keefer Rd along Cohasset hwy, then 0.4-0.6 mi S along private dirt rd 396 Comment
  SEINET13693686  Diplacus aurantiacus M. J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CAS-BOT-BC151919  Diplacus douglasii Lowell Ahart 1983-4-10 3923 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CHSC32743  Diplacus grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  SEINET13751112 Image available Diplacus grandiflorus F. W. Pennell, A. A. Heller 1940-1 25673 Butte Route 24, 6 miles up, along Feather River, above Oroville 91 Comment
  CHSC103691  Diplacus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 304 Comment
  CHSC1762  Diplacus kelloggii R. Carter 1964-3-23 54 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 25 yds. E of road along rim of table. 60 Comment
  CHSC44671  Diplacus kelloggii R. Banchero 1980-4-26 135 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd, 0.4 mi SW of the town of Cohasset. 426 Comment
  CHSC44811  Diplacus kelloggii R. Banchero 1980-4-19 120 Butte Ca 0.4 mi directly SE of Feather Falls, Ca 4.2 mi N of the town of Feather Falls. 579 Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 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
  CHSC108592  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CAS-BOT-BC136235  Dodecatheon alpinum H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  CHSC3290  Dodecatheon clevelandii subsp. patulum M. L. Hillier 1966-2-21 Butte Old Oroville Chico rd. 3/4 miles w. of highway 99E along rd. side. Comment
  CHSC90234  Dodecatheon clevelandii subsp. patulum Ross L. Jones 1989-2-25 4 Butte Ca. 100 m e of abandoned city dump bordered by Highway 32 and Humboldt Rd., immediate outskirts e of Chico. 60 Comment
  CHSC2398  Dodecatheon hendersonii R. Carter 1965-2-13 146 Butte Plant found on Crubbs Rd. .9 mi SE of intersection with Reservoir Rd., on W bank along road ca. 6 mi. S of Oroville. 121 Comment
  RSA31870  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  RSA517016  Downingia bicornuta Barbara Ertter, L. Ahart 1986-4-13 5902 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  JEPS127060  Downingia bicornuta var. bicornuta Lowell Ahart 2016-5-17 20842 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  UC1244001  Downingia bicornuta var. bicornuta John H. Weiler and A. P. Nelson 1961-5-29 61244 Butte 5 mi s Chico (e side of U.S. Highway 99 E (bridge 12-125)) Comment
  CHSC42257  Downingia cuspidata Lynda Sterling 1986-4-15 15 Butte 11 mi n of Chico, sw of jct of Broyles Road and Hwy 99E. Comment
  CHSC4645  Downingia cuspidata R. Carter 1966-4-21 348 Butte Found ca. 5 mi. NE of Oroville on top Table Mt., growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. in dry vernal pool. 274 Comment
  UCD115555  Draba verna L. Ahart 1973-11-21 150 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC103662  Draba verna var. verna Lowell Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC35016  Draba verna var. verna R. E. Preston 1982-3-20 193 Butte Roadside, Hwy 70 at Bear Ranch Creek; ca. 22 mi nne of Oroville. 457 Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CAS-BOT-BC109477  Dudleya John Thomas Howell 1962-6-16 37597 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC3524  Dudleya cymosa John Francis 1966-4-23 129 Butte Table Mt. Comment
  CHSC37102  Dysphania ambrosioides L. Ahart 1982-9-12 3794 Butte Along banks of North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC116141  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS120586  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS124253  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC197100  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CDA42929  Echinochloa crus-galli L. Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC66174  Echinochloa crus-galli Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  UCD61101  Echinochloa muricata var. microstachya E. M. Johnston 1915-1 W- 1415 -J Butte Biggs. Comment
  UCD61109  Echinochloa oryzicola E. Dean; with J. Ditomaso and E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  UCD37171  Echinochloa oryzicola var. mutica Beecher Crampton 1957-9-17 4626 Butte Butte County, 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  UCR136870  Echinochloa oryzicola var. mutica Beecher Crampton 1957-9-17 4626 Butte Sacramento Valley, 5 miles northwest of Biggs, Biggs Rice Experiment Station [955 Butte City Hwy, Hwy 162, 2.5 mi. west of Hwy 99] 30 Comment
  POM219534  Echinodorus berteroi H. F. Copeland 547 Butte Nelson. Comment
  CHSC4578  Egeria densa C. Glascock 1965-1-27 199 Butte Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CDA5097  Elaeagnus angustifolia L. Ahart, M. G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  JEPS122151  Elatine californica Lowell Ahart 2014-4-30 19420 Butte About 50 yards south of the Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southeast of Honcut. Comment
  CHSC66357  Elatine chilensis Vernon H. Oswald 1996-6-20 7835 Butte Sacramento National Wildlife Refuge, Llano Seco Unit, U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  CHSC74724  Eleocharis B. Castro; L. Gehrung 1998-7-2 797 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  CHSC115279  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte Bottom of a large duck field, 50 yards south east 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. Freshwater Marsh. 19 Comment
  POM183193  Eleocharis acicularis var. acicularis H. F. Copeland 1930-7-28 1355 Butte Neighborhood of Jonesville. 1829 Comment
  SEINET3478072  Eleocharis acicularis var. acicularis Unknown 2000-7-11 8576 Butte Feather Falls, Feather Falls, about 4 air miles northeast, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the county road, upper west branch of Know-Nothing Creek, north side of Lumpkin Ridge Road 1210 Comment
  CHSC78562  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC116144  Eleocharis bella Lowell Ahart 2015-10-26 20597 Butte ################ 207 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 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
  CHSC78287  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte Seeps, on the 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, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC36358  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising 1982-6-4 1592 Butte Along the edges of Concow Cr. at its headwaters just S. of Flea Valley. 1097 Comment
  CHSC68442  Eleocharis bolanderi L. P. Janeway 1987-6-13 2217 Butte Meadow just northeast of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC95100  Eleocharis decumbens L. P. Janeway; S. Galen Smith 2006-7-27 8822 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC78188  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CDA38946  Eleocharis macrostachya G. D. Barbe, T. C. Fuller 1982-6-14 3678 Butte Black Bart Road, 1.25 miles west of Forbestown Road. 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
  CHSC44293  Eleocharis pachycarpa V. Oswald 1988-6-8 3359 Butte South border of a small pond in the Oroville Wildlife Area on the w side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  JEPS124329  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 -A Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS124330  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC78302  Eleocharis quinqueflora Lowell Ahart 2000-6-16 8488 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA33180  Eleocharis quinqueflora L. Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City Comment
  CHSC38909  Eleocharis rostellata Vernon Oswald 1983-6-20 721 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. Growing on the southern-most seep of Upper Park Rd. 128 Comment
  RSA691016  Eleocharis rostellata L. Ahart, John Dittes, Josephine Guardino, Steven Green 2003-5-27 10224 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
  CHSC45318  Eleusine indica Vernon Oswald 1988-8-30 3695 Butte California State University, Chico, along Mansion Ave. 59 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  CHSC28573  Elodea canadensis M. S. Taylor; J. D. Jokerst 1979-11-11 2278 Butte Irrigation ditch, at jct with Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC31636  Elodea canadensis L. Ahart 1977-11-22 1610 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 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
  UCD61510  Elymus elymoides L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC101066  Elymus glaucus R. A. Schlising; R. Preston, R. Banchero 1981-6-22 4107 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CHSC71212  Elymus glaucus subsp. glaucus Lowell Ahart 1998-6-3 7973 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC38858  Elymus multisetus Vernon Oswald 1983-5-25 555 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area R (2.3 mi e of the power lines). 231 Comment
  CHSC49492  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1983-7-6 814 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi e of Hwy 32. 1249 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  CHSC65411  Elytrigia intermedia subsp. intermedia Vernon Oswald 1987-7-29 3155 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  UC1594716  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte about 1/2 mi n Flea Valley (e of intersection, about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  CHSC69450  Epilobium brachycarpum Lowell Ahart 1997-9-6 7888 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  UCR188571  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC111964  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC69047  Epilobium canum subsp. latifolium Lowell Ahart 1997-8-1 7775 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC75969  Epilobium ciliatum subsp. ciliatum Lowell Ahart; Vernon H. Oswald 1999-8-13 8171 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1562487  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along creek below high water line of Lake Oroville (about 1/2 mi sw of the Enterprise Bridge across lake); McCabe Creek 228 Comment
  SEINET10452979  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6623 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  UC398938  Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  CHSC109575  Epilobium minutum L. P. Janeway 2012-6-7 10866 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  JEPS123820  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte About 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC70346  Epilobium oregonense R. A. Schlising 1981-7-28 4171 Butte N part of county at Coon Hollow, N of Philbrook Reservoir; near junction dirt road and West Branch of Feather River. Creekside. 1328 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
  CDA38098  Epilobium saximontanum T. C. Fuller 1962-7-12 9166 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC46148  Epilobium torreyi Lowell Ahart 1974-6-5 476 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS119904  Epilobium torreyi Lowell Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  RSA684652A  Equisetum arvense Michael A. Vincent 1962-4-15 180 Butte 1 mile S of Stirling City on Skyway Comment
  CHSC109682  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, atTable 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CAS-BOT-BC57258  Equisetum laevigatum John Thomas Howell 1975-6-15 51072 Butte Butte Creek near Chico 60 Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  SEINET10530242  Equisetum laevigatum Mary Susan Taylor 1980-7-6 Taylor 3081 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC26626  Eragrostis cilianensis M. P. Hayes 1977-9-7 123 Butte In a flower bed on Butte College Campus parking lot at the corner of Clark and Pentz roads. 95 Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  CHSC110982  Eragrostis curvula Lowell Ahart 2012-7-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. 162 Comment
  CHSC65187  Eragrostis hypnoides Lowell Ahart 1995-8-19 7614 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC94758  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC90973  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8376 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road on southwest side of Dogwood Creek; canyon of North Fork Feather River. 594 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CHSC117805  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 kim north of Forbestown Road. 860 Comment
  CHSC41870  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls. 609 Comment
  CHSC20959  Ericameria nauseosa var. speciosa M. S. Taylor 1975-9-19 920 Butte Ca. 1/2 mi n of Magalia. 609 Comment
  CHSC45661  Erigeron bonariensis Vernon Oswald 1987-6-12 2991 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC46917  Erigeron bonariensis Lowell Ahart 1974-11-9 678 Butte On levees around a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC6172  Erigeron bonariensis J. Wheeler 1968-5-17 370 Butte N side of intersection of Broadway and First Street, Chico. 59 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC26624  Erigeron sumatrensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  CHSC680  Eriodictyon californicum M. Roberson 1956-5-14 Butte SW of Paradise along Skyway 426 Comment
  SBBG16968  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Rd, 3 mi NE of Centerville Comment
  CAS-BOT-BC259396  Eriogonum luteolum Richard R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCD100301  Eriogonum luteolum L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC30847  Eriogonum nudum var. oblongifolium M. S. Taylor 1980-9-19 3339 Butte On edge of large serpentine area at jct of Coutelenc Rd and the Skyway, Magalia. 670 Comment
  CAS-BOT-BC261715  Eriogonum nudum var. oblongifolium John Thomas Howell 1976-7-14 51815 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  CAS-BOT-BC269856  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 839 Butte West of Pentz Comment
  SEINET10479534  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1980-9-19 Taylor 3339 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC95160  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. 60 Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  JEPS94437  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7883 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road about 1/4 mi w of Rim Road) 731 Comment
  UC1594723  Eriogonum umbellatum var. nevadense Lowell Ahart 1992-7-29 6868 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC332  Eriophyllum lanatum var. croceum 1954-5-30 Butte Below Concow Lake on road to Flea Valley. Comment
  CHSC73931  Eriophyllum lanatum var. croceum B. Castro; L. Gehrung 1998-7-16 809 Butte Ca 7.5 air mi NW of Brush Creek, ca 0.7 mi SE of Big Bar Mtn, on N edge of USFS Rd 22N73X/76X, ca 0.35 E of its jcn with the main road (USFS Rd 23N28). In bed of old logging road. 1194 Comment
  UC1118260  Eriophyllum lanatum var. grandiflorum J. E. Sowder 1933-6-6 80 Butte 0.5 mi nw of Nelson's Bar; Chico Quadrangle 457 Comment
  CAS-BOT-BC308164  Eriophyllum lanatum var. grandiflorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC61767  Eriophyllum lanatum var. integrifolium Vernon H. Oswald 1993-8-24 5852 Butte Forest Rd. 26N33, 1.8 mi S of Humbug Rd. (27N11), ca. 0.5 mi (air) SW of Cirby Mdw., ESE of Jonesville. 1828 Comment
  CHSC664  Erodium botrys P. Delaplane 1965-3-20 25 Butte On open fields on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  SEINET10495107  Erodium cicutarium Mary Susan Taylor 1973-1 Taylor 38 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC7118  Erodium moschatum J. Borgstrom 1969-4-23 8 Butte Abundant ca. 4 mi sw of Chico on Dayton Rd, 4 ft. on s side of road. 60 Comment
  UC1487246  Eryngium castrense Yusuf Sheikh 1975-7-9 606 Butte e. Briggs (on Hamilton Rd. ca. 0.5 mi. from intersection w/ State Hwy. 99) Comment
  CAS-BOT-BC40745  Erysimum capitatum A. A. Heller 1913-6-7 10826 Butte West Branch of the North Fork of the Feather River near Stirling. 914 Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC105163  Erythranthe bicolor Christopher T. Ivey 2007-5-22 369 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC1759  Erythranthe cardinalis R. M. Staley 1953-7-13 Butte Butte Creek. Comment
  CAS-BOT-BC153575  Erythranthe floribunda Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC108801  Erythranthe glaucescens Lowell Ahart 2012-4-9 17850 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 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
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  CAS-BOT-BC153853  Erythranthe glaucescens Jed McClellan; Bonnie McClellan 1976-4-16 s.n. Butte Honey Run Road Comment
  CHSC44681  Erythranthe guttata R. Banchero 1980-4-19 121 Butte Along Lumpkin Rd ca 1.1 mi NE of the Enterprise Bridge, Ca 0.3 mi from the jct of Lumpkin and Enterprise Rds. 353 Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC3185  Erythronium multiscapideum Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  CHSC65606  Erythronium multiscapideum L. P. Janeway 1995-5-18 4764 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1155 Comment
  CAS-BOT-BC504525  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte Hills 12 miles northeast of Chico near Rock creek Comment
  CHSC99545  Erythronium purpurascens L. P. Janeway 2008-6-15 9418 Butte Northern High Sierra Nevada. Along Concow Road 1.1 road km southwest of Philbrook Road; north-facing slopes above the east end of Philbrook Reservoir. 1729 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CHSC39225  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CAS-BOT-BC402963  Eschscholzia californica Lowell Ahart 1985-3-24 4860 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CDA43084  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville. Comment
  CHSC43617  Eucephalus breweri Vernon H. Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak. 2148 Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  CDA34133  Euphorbia peplus L. Ahart 2009-4-3 15532 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC615  Euphorbia peplus V. Holt 1945-11-16 Butte Chico. 57 Comment
  JEPS122258  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC312201  Eurybia radulina Lowell Ahart 1980-9-10 2640 Butte 7 miles east of Milsap Bar, Sierra Nevada 1200 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  CHSC46920  Euthamia occidentalis Lowell Ahart 1977-9-20 1570 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 Comment
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC118578  Festuca californica Nancy Groshong 2017-4-30 2 Butte Magalia Serpentine. South side of Coutelenc Road east of Skyway. 701 Comment
  CHSC27705  Festuca californica Robert A. Schlising; Coleta Lawler 1978-5-27 3280 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. Rr and Coutelenc Road. 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
  UCR237317  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18733 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  POM206211  Festuca elmeri A. A. Heller 1902-5-16 5562 Butte Marysville Buttes (rocky slope of East Butte) Comment
  JEPS122213  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CDA13878  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-7 13736 Butte Sierra Nevada; Bottom of Little Butte Creek canyon above Magalia Reservioir, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CHSC42521  Festuca subulata Lowell Ahart 1987-5-9 5595 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  SEINET10507968  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC77688  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CAS-BOT-BC77692  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CDA14053  Fragaria vesca G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries enter from east. Comment
  CAS-BOT-BC62910  Frangula californica subsp. tomentella A. A. Heller; H. E. Brown 1902-5-6 5468 Butte Berry Canyon (Near Clear Creek). Comment
  UCD112786  Frangula californica subsp. tomentella J. I. Mallory 1968-5-29 289 Butte 0.75 mile northeast of Union Hill. 670 Comment
  CHSC47050  Frangula purshiana R. A. Schlising; P. Broyles 1987-6-26 4520 Butte 1.2 mi s of Inskip, along Skyway. 1417 Comment
  RSA166766  Frasera albicaulis var. nitida H. Dearing, M. Dearing 1938-6-21 2054 Butte 21 miles north of Chico, near Lone Pine Lookout. 1220 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CAS-BOT-BC223389  Fraxinus dipetala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  LA50899  Fraxinus dipetala A. A. Heller; 1915-4-12 11815 Butte hills 14 mi NE of Chico near Rock creek Comment
  CHSC3019  Fraxinus latifolia Carl Pejsa 1958-4-19 53 Butte Bidwell Park Forestry Station. Comment
  SEINET10871601  Fremontodendron californicum Mary Susan Taylor 1980-5-15 Taylor 2638 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
  CHSC28962  Fritillaria atropurpurea M. S. Taylor 1978-7-19 1773 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC88649  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 296 Butte Plumas National Forest. On Woodleaf Road. 853 Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  SJSU8739  Fritillaria eastwoodiae L. J. Ericsen 1955-4-17 117 Butte Humbug Rd Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CHSC2287  Fritillaria recurva R. M. Staley 1952-7-17 Butte Butte Creek. 365 Comment
  CHSC87418  Fritillaria recurva R. D. Fischer 2004-3-11 108 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected off cut bank near northern end of Humboldt Trail. 435 Comment
  CHSC99097  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 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
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC107270  Galium bolanderi L. P. Janeway 2011-6-29 10405 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC33859  Galium bolanderi J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 854 Butte Carpenter Ridge, 50 met N of Humboldt Rd at a point 1.9 mi N of it's jct with Hwy 32. Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS113505  Galium bolanderi Lowell Ahart, Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  UC426969  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville 1700 Comment
  SEINET10869770  Galium bolanderi Mary Susan Taylor 1980-6-14 Taylor 2876 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC26731  Galium murale M. S. Taylor; M. Hayes 1978-4-14 1551 Butte On E side of Williams Rd, ca. 1/4 mi N of Pentz Rd, on Butte College campus, ca. 15 mi S of Chico. 30 Comment
  CHSC112200  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte On a dredge pile, in Wilson Creek, about 40 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC36511  Galium parisiense L. Ahart 1982-5-29 3446 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CHSC45083  Galium porrigens var. tenue Chris Bradley; C. A. Bradley 1988-4-26 2 Butte Honey Run Rd., ca. 100 m from Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  POM193329  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 Comment
  CHSC33968  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-15 4187 Butte Ca. 14 mi NE of Stirling City. 1737 Comment
  CAS-BOT-BC169934  Garrya fremontii John Thomas Howell 1975-6-15 51081 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CAS-BOT-BC169939  Garrya fremontii H. F. Copeland 1338 Butte Neighborhood of Jonesville, 26-VII-30, by Government Trail 1676 Comment
  CHSC109651  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the sides of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-3/8 miles (air) northeast of Chico. 220 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 Comment
  SEINET12193690  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-1 4164 Butte NE part of the county, SE of Snag Lake on Snow Mt., top of Snow Mt. Ridge 2073 Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  CHSC90079  Genista monspessulana Ross Rowland 2001-4-25 53 Butte On east side of Longview Road about 20 yards north of Skyway in Paradise. 616540mE/4400340mN/zone 10N. 463 Comment
  CHSC44909  Gentianopsis simplex Lowell Ahart 1988-7-31 6167 Butte In a meadow, about 1/4 mile east of the road, about one mile south-east of Jones Meadow, about 2 miles north-east of Bald Mountain. 1767 Comment
  CHSC51885  Gentianopsis simplex L. P. Janeway 1988-7-29 3135 Butte Near W Br Feather River at crossing of rd into Coon Hollow. Meadow. 1615 Comment
  CHSC94438  Gentianopsis simplex L. P. Janeway 2006-8-12 8846 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
  SEINET2140398  Gentianopsis simplex E. B. Copeland 1930-1 440 Butte Jonesvilee, Butte County. 1500 Comment
  CHSC113238  Geranium dissectum Lowell Ahart 2014-4-16 19378 A Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  CHSC23642  Geranium molle M. S. Taylor 1976-3-30 1039 Butte On s side of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  UC134005  Gilia capitata subsp. mediomontana Mrs. R. M. Austin 1899-7-1 833 Butte Colby Comment
  RSA469346  Gilia capitata subsp. pedemontana L. S. Rose 1939-6-7 39245 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  POM225868  Gilia capitata subsp. pedemontana J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  HSC45825  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UCD14392  Gilia tricolor Maura Cullinane 1983-4-1 5 Butte Butte Co.; from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit NE, turn right on Richardson's Springs Road, drive form 3 mi. to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17; Comment
  CHSC1255  Gilia tricolor subsp. tricolor Eleanor Stilson 1897-6-1 Butte Comment
  CHSC24975  Gilia tricolor subsp. tricolor J. Cox 1976-3-10 44 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
Read comments
Jan 19 2011
  CAS-BOT-BC266592  Githopsis pulchella Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC40401  Githopsis pulchella subsp. campestris Lowell Ahart 1985-5-15 4967 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC39534  Githopsis specularioides Lowell Ahart 1983-6-12 4041 Butte Found growing along the road near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  SEINET10906066  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart 213 Butte Swedes Flat road near Bangor 457 Comment
  CDA20825  Glyceria declinata M. Stewart 2006-4-17 PDR 1290445 Butte Sacramento Valley; Red Hill Ranch, 1855 Nugent Rd, Gridley. Growing in rice stubble field. Comment
  CHSC82288  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC59047  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte Near a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA0037016  Gnaphalium palustre Lowell A. Ahart 2013-11-17 19258 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  SEINET10938047  Gnaphalium palustre Mary Susan Taylor 1978-9-9 Taylor 1911 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC28684  Goodyera oblongifolia M. S. Taylor 1979-9-9 1920 Butte Inskip on the Skyway. 1467 Comment
  SEINET10839605  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1920 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CAS-BOT-BC305282  Grindelia hirsutula John Thomas Howell 1951-6-29 27769 Butte Big Bend Mt. 609 Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  UC196299  Hackelia californica A. A. Heller 1914-8-7 11657 Butte Summit back of Jonesville 2133 Comment
  UCR64621  Hackelia californica H. F. Copeland 1930-7-20 1313 Butte Jonesville 1524 Comment
  UC177580  Hackelia nervosa H. M. Hall 1914-7-27 9790 Butte Big Summit, Humboldt Road Big Summit 2042 Comment
  UC119829  Hastingsia alba Mrs. R. M. Austin July 1896 799 Butte Colby Comment
  CHSC5942  Hedera helix M. MacArthur 1968-6-17 176 Butte SW edge of Big Chico Creek, NE of Dining Hall, Chico State College campus. 60 Comment
  SD241752  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte Damp soil of dredge piles, no the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC117400  Heliotropium europaeum Lowell Ahart 2016-5-30 20888 Butte On the bottom of a deep wash (west of where we removed gravel), 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
  UCD77751  Heliotropium europaeum Robert E. Preston 1996-4-30 933 Butte 4.5 mi n of Hamilton City, on e side of Sacramento River 44 Comment
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC111117  Herniaria hirsuta var. hirsuta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18070 Butte On the west side of the poor road (horse trail), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, lower Bidwell Park, Chico. 76 Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 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
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  SEINET260315  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Honcut Flume on the Joie Osgood Ranch ca 2 mi N and 2.5 mi E of Honcut 76 Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  CHSC100911  Heterocodon rariflorum R. A. Schlising 1979-5-4 3436 Butte South of Cohasset. 457 Comment
  SEINET10460747  Heterocodon rariflorum Mary Susan Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  SEINET12331810  Heterocodon rariflorum L. Ahart, Ahart, P. 1984-1 4727 Butte About 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE 1500 Comment
  CHSC30952  Heteromeles arbutifolia L. Ahart 1980-7-4 2455 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 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
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC21131  Hirschfeldia incana M. S. Taylor 1975-10-29 974 Butte On n side of Butte Creek, ca. 4 mi e of junc of Humbug Rd and the Skyway. Comment
  CHSC84242  Hoita macrostachya Lowell Ahart 2003-7-17 10420 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  CHSC27242  Holcus lanatus P. Moyer 1972-4-9 170 Butte Chico State campus. Railroad tracks service road. 60 Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  JEPS120759  Holocarpha virgata Lowell Ahart 2013-9-5 19022 Butte On west side of La Porte Road, about 1/4 mile SW of Dunstone Drive, about 2 1/3 air miles northeast of Huncut Comment
  RSA0112643  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  RSA449801  Holodiscus microphyllus H. F. Copeland 1928-8-29 398 Butte Neighborhood of Jonesville. Summit of Humboldt road. 2134 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  UCD85409  Hordeum brachyantherum subsp. brachyantherum Robert E. Preston 1982-7-21 345 Butte Ca. 1.1 miles W of Philbrook Res. Upper Montane Forest. 1676 Comment
  JEPS119876  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte About 100 yards north 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
  CAS-BOT-BC143973  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  UCD113498  Horkelia fusca var. tenella H. F. Copeland 1928-8-2 371 Butte Jonesville. 1524 Comment
  CAS-BOT-BC536262  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CHSC33103  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-15 3749 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC35707  Hosackia stipularis var. ottleyi J. D. Jokerst 1982-5-16 1570 Butte Ponderosa Way ca. 1/2 mi N of its junction with Lower Forbestown Rd. 731 Comment
  UCD119485  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC400828  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  CHSC11966  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  JEPS66777  Hypericum anagalloides H. R. Dutton 1921-1 Butte Chico, Hooker Oak Comment
  JEPS93795  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte along spur road intersecting Rim Road 4.1 mi n of Jarbo Gap (1 air mi w of Pulga and 0.4 mi w of Rim Road) 853 Comment
  UC600533  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CHSC51264  Hypericum mutilum Lowell Ahart 1990-10-3 6627 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
Read comments
Mar 31 2009
  JEPS86716  Hypericum mutilum Vernon Oswald 1990-9-20 4451 Butte at w. end of Cana Hwy Sacramento R. (portion of Rancho Bosquejo) 48 Comment
  CHSC27197  Hypericum patulum P. Moyer 1971-2-1 74 b Butte S side Chico Ck., 100 ft. from L. S. main entrance. CSUC campus. 60 Comment
  CDA42906  Hypericum perforatum L. Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  UC600658  Ipomopsis aggregata H. F. Copeland 1928-8-14 Butte Jonesville Comment
  CAS-BOT-BC133510  Iris Saichi Kawahara 1968-5-4 391 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  SEINET12056851  Iris douglasiana L. A. Tillotson 1890-1 s.n. Butte Chico Comment
  CHSC30291  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-27 2646 Butte Around parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 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
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  SEINET12050314  Iris macrosiphon Unknown 1985-1 4848 Butte about 1/2 mi NE of the West Branch Bridge across Lake Oroville, 1/4 mi E of Hwy 70, N of Oroville Comment
  UC1377667  Iris tenuissima John Ingram and Arlynn Ingram 1960-4-6 500 Butte s of Paradise (at Endicot Springs on Neal Road); Endicot Springs Comment
  CAS-BOT-BC69903  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 mi. n. and 1/4 mi. e. of Honcut. 50 Comment
  CHSC71271  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  SEINET3863772  Isoetes howellii Alv Dan Youngberg 1968-4-13 901 Butte On Table Mountain above Oroville.; 0 Comment
  UCD135856  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles northeast of Bangor and ca. 15 miles southeast of Oroville. 342 Comment
  SEINET10530332  Isoetes nuttallii Mary Susan Taylor 1980-3-28 Taylor 2404 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC42749  Isolepis cernua Lowell Ahart 1973-6-17 254 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC83671  Isolepis setacea John Dittes 2002-7-9 2 -13 Butte Northern High Sierra Nevada; Plumas National Forest, between Hartman Bar Ridge and Mountain Spring House Ridge, on slope above confluence of South Branch of the Middle Fork Feather River and Pinchard Creek, ca. 0.2 air miles south-southeast of Whisky Hill. 1280 Comment
  UC1609032  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte about 6 (air) mi ne Feather Falls (w of the bridge across Fall River); Fall River, ne of Feather Falls 1036 Comment
  CHSC69474  Jensia rammii James D. Jokerst 1982-5-28 1584 Butte Concow Basin W of Concow Creek (and Concow Rd.) ca. 0.25 mi N of Concow Lake. 609 Comment
  HSC23348  Juglans hindsii S. K. Ray 1971-4-27 19 Butte N side of Gridley-Colusa Hwy., 0.5 mi. W of Randolph Ave. Jct., 0.5 mi. W of Gridley Comment
  SEINET10937859  Juglans hindsii Mary Susan Taylor 1975-5-6 Taylor 559 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
  JEPS114885  Juncus acuminatus Lowell Ahart 2008-5-30 14802 Butte Dry to damp bare granite soil, along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  CHSC31839  Juncus articulatus L. Ahart 1976-6-24 502 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC56894  Juncus articulatus L. P. Janeway; C. A. Janeway 1986-10-12 1922 Butte North side North Fork Feather River at Pulga. Between river and railroad grade. 426 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
  JEPS113865  Juncus brachyphyllus Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. 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
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC98806  Juncus bufonius var. bufonius Lowell Ahart 2008-5-2 14707 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  JEPS98716  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  JEPS107948  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 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
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC59024  Juncus covillei var. covillei Lowell Ahart 1992-7-27 6863 Butte Along Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC115687  Juncus cyperoides Emily Meigs Doe 2015-5-11 27 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 miles (air) NW of Forbestown. About 200 ft. SE of Rd. 19N19, approx. 0.82 mi. (air) NE of its intersection with Ponderosa Way. 768 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  CHSC49609  Juncus drummondii Vernon Oswald; Lowell Ahart 1987-7-1 3084 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the s edge of the large lake. 1935 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  JEPS98528  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  SBBG128059  Juncus effusus subsp. effusus L. Ahart 2011-8-19 17636 Butte ca. 30 yards E of Know-nothing Crk, in low area on the N side of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  CHSC39587  Juncus effusus subsp. pacificus Lowell Ahart 1983-7-24 4202 Butte Found along the edge of the dirt road, about 2 miles south-west of the Forbestown Res., about 3 miles north-east of Forbestown. 550 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC42090  Juncus kelloggii Lowell Ahart 1980-5-13 2263 Butte Below a seep, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  RSA795237  Juncus laccatus L. Ahart 2011-8-19 17641 Butte About 1/2 miles north of the Lost Creek Reservoir Dam, about 4.5 air miles north of Clipper Mills. 1267 Comment
  CAS-BOT-BC312663  Juncus leiospermus Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10472450  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2560 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
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 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-BC110104  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-14 3434 Butte Peter Ahart Ranch, about 2 miles north and 0.5 mile east of Honcut. 50 Comment
  UC1438369  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CDA34709  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  RSA304367  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Stranchan, L. Ahart 1980-5-7 3309 Butte North Table Mountain, 5 airmiles N of Oroville 396 Comment
  SBBG55177  Juncus leiospermus var. leiospermus B. Ertter, J. L. Strachan 1980-5-7 3309 Butte North Table Mtn, ca. 5 air mi N of Oroville 396 Comment
  UCD141562  Juncus longistylis A. A. Heller 1917-7-28 12837 Butte Butte Meadows. 1280 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  CHSC107582  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1225 Comment
  CHSC57156  Juncus orthophyllus L. P. Janeway; C. A. Janeway 1986-8-31 1808 Butte Along Scotts John Creek at road 26N27, 3 mi from Humboldt Road. 1737 Comment
  CHSC2219  Juncus oxymeris I. Boyd 1949-5-19 Butte Near Chico. Along stream bank. 57 Comment
  CHSC102614  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC28402  Juncus patens J. D. Jokerst 1979-10-12 377 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC113109  Juncus tenuis Lowell Ahart 2013-11-13 19241 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
  CHSC69729  Juncus tenuis Lowell Ahart 1997-10-20 7927 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS113765  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  SEINET10531637  Juniperus californica Mary Susan Taylor 1980-2-23 Taylor 2321 Butte T21N R2E SE section 11. In Foothill savannah, ca 15 m NW of Neal Road. ca 3 km E of Highway 99, ca 1.5 km E of Neal Road dump, ca 11 km S of Chico. Comment
  UC2026866  Juniperus lusitanica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  CHSC38692  Keckiella breviflora var. glabrisepala Vernon Oswald 1983-5-18 502 Butte Upper Bidwell Park, Chico, near Yahi Trail 100 ft w of Parking Area P (2.0 mi e of the power lines). 195 Comment
  UCR133592  Kelloggia galioides H. F. Copeland 1930-7-21 1327 Butte Jonesville 1524 Comment
  CHSC43864  Kumlienia hystricula Vernon Oswald 1988-3-20 3260 Butte Centerville flume upstream from Humbug Rd. at the s end of the tunnel. 353 Comment
  UC179501  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte meadows Butte 1219 Comment
  CHSC92058  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CHSC38365  Lactuca saligna Vernon Oswald 1983-6-29 798 Butte Upper Bidwell Park, Chico, at the edge of Parking Area L at Diversion Dam. 121 Comment
  CAS-BOT-BC341292  Lagophylla glandulosa John Thomas Howell 1962-6-15 37486 Butte Magalia 731 Comment
  CHSC108176  Lagophylla glandulosa L. P. Janeway 2011-8-17 10658 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850 m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 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
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  SFV3166  Lamium amplexicaule M. L. Vincent 1961-3-26 30 Butte Sierra Nevada Honey Run Road, near covered bridge over Butte Creek. Southwest of Paradise. 110 Comment
  SEINET10473882  Lasthenia californica Mary Susan Taylor 1980-3-1 Taylor 2352 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CDA42855  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC354122  Lasthenia fremontii Ahart Lowell 1979-5-11 s.n. Butte Wheat field, Valley Grassland. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46247  Lasthenia glaberrima Vernon Oswald 1989-4-27 3750 Butte Wurlitzer Unit, Vina Plains Preserve. North of the woodland and E of Cana-Pine Creek Rd. 56 Comment
  JEPS88907  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC36963  Lathyrus latifolius M. S. Taylor 1982-8-16 4985 Butte Just S of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  POM219421  Lathyrus nevadensis subsp. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CHSC65554  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-6 4774 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 749 Comment
  CDA13877  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1997-5-7 13735 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET7042408  Lathyrus sulphureus A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC38497  Lathyrus tingitanus Vernon Oswald 1983-5-15 496 Butte Upper Bidwell Park, Chico, on the s dike of Horseshoe Lake. 100 Comment
  UCD106543  Lathyrus vestitus var. ochropetalus R. R. Kehlor 1951-4-14 26 Butte 6 1/4 miles east of Oroville on Mt. Ida Road. Comment
  CAS-BOT-BC321779  Layia fremontii H. E. Brown 1897-4-15 184 Butte Near Clear Creek Comment
  CHSC2831  Layia fremontii David Prall 1965-3-28 16 Butte In field east of Meridian Rd. 8 miles NE of HW. 99E north of Chico. 60 Comment
  CHSC29007  Layia fremontii M. S. Taylor 1980-3-28 2409 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC8140  Layia fremontii B. Hamilton 1969-4-20 105 Butte Found 1 mile south of Pentz Rd on Highway 99 along roadside. Comment
  CAS-BOT-BC321753  Layia fremontii A. A. Heller 1914-3-28 11235 Butte Hills 8 miles N of Oroville Comment
  CAS-BOT-BC321776  Layia fremontii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC103169  Lemna minuta Lowell Ahart 2009-11-19 16556 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  RSA718342  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about 1 mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  RSA755760  Lepechinia calycina L. Ahart 2009-5-23 15759 Butte East side of Guardians Trail, about 150 yards southwest of the Ten Mile House Road, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC63700  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA726665  Lepidium nitidum var. nitidum Richard Halse 2002-3-27 6153 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 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
  CHSC101269  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC35023  Lepidium strictum R. E. Preston 1982-3-27 204 Butte At roadside; W. First Ave between Warner and Cedar Sts, Chico. Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  CHSC66176  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7662 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC36822  Leptosiphon bolanderi R. A. Schlising; J. D. Jokerst 1980-7-2 3813 Butte 0.75 mi SW of road crossing of Butte Creek. 658 Comment
  CHSC35973  Leptosiphon ciliatus M. S. Taylor 1982-6-24 4740 Butte In meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  POM219377  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte Jonesville, Woods above Butte creek meadows. 1829 Comment
  CHSC62775  Leptosiphon filipes L. P. Janeway 1993-6-9 4376 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. 621 Comment
  CHSC91672  Leptosiphon filipes L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Steep southwest-facing slope. 981 Comment
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CHSC30399  Lessingia nemaclada Diane H. Ikeda 1979-9-29 162 Butte Ca. 3.1 mi from the first crossing of Feather River with Hwy. 70 on Hwy. 70, just before the Plumas National Forest boundary. Comment
  CHSC62431  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest. South end of Swayne Hill. Along edge of dirt road 23N28. 731 Comment
  SEINET10474779  Lessingia nemaclada Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4179 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  UC1287453  Lessingia virgata Willard Spence 1960-9-7 625 Butte Alternate Rt. 40 7 mi s Oroville Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  UC478546  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC46224  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1060 Butte Ca. 2.0 km s of Inskip on W. side of Skyway. 1400 Comment
  CDA35341  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico; Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. 0 Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  CHSC83909  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  CHSC93480  Limnanthes douglasii subsp. nivea Lowell Ahart 2006-4-28 12542 Butte Along a small stream, south part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC23531  Limnanthes douglasii subsp. rosea M. S. Taylor 1976-3-23 1030 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99 junc, ca. 11 mi n of Chico. 60 Comment
  CHSC67553  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte Doe Mill population E of Butte Creek Diversion Channel, S of Doe Mill Rd. In a vernal pool. 80 Comment
  CHSC84877  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 47 Butte Dove Ridge Preserve, south of Gold Run Creek. Comment
  HSC93613  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 481 Butte 0.3 mi. E of El Monte Ave., between Hwy. 32 and Humboldt Rd., E side Chico. Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  UC1562434  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte dirt road about 1/2 mi e of Larkin Road about 1 mi s Oroville Airport 45 Comment
  SEINET10496796  Linanthus ciliatus Mary Susan Taylor 1982-6-24 Taylor 4740 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC62123  Linanthus dichotomus B. Castro; R. A. Schlising, L. P. Janeway 1987-4-4 52 Butte Ca 1 mi N of Magalia on the N side of Ponderosa Way, ca 0.1 mi E of its jcn with Coutolenc Rd. 716 Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 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
  JEPS117409  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  CDA6347  Linaria genistifolia subsp. dalmatica T. C. Fuller 1962-7-12 9163 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  SBBG121597  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte North Honcut Crk, Peter Ahart Ranch, ca. 0.75 mi N and 2.5 mi E of Honcut, ca. 12 mi (air) SE of Oroville Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  CHSC74726  Lipocarpha aristulata B. Castro 1987-8-25 203 A Butte Lower Butte Creek, on cobble and gravel bars along S edge, ca 0.25 mi E of its crossing under Hwy 99, and 2.1 mi S of the Skyway. 60 Comment
  CHSC78930  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC47074  Listera convallarioides R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4651 Butte NE part of county, on Snow Mountain Ridge. 1950 Comment
  CHSC23698  Lithocarpus densiflorus M. S. Taylor 1976-5-5 1110 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. Comment
  CAS-BOT-BC36126  Lithocarpus densiflorus var. densiflorus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54409 Butte Near Mountain House on Oroville - Quincy road 1051 Comment
  CHSC42953  Lithocarpus densiflorus var. echinoides Lowell Ahart 1987-7-8 5811 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC3164  Lithophragma Dona Kingsford 1966-3-26 Butte Covered Bridge, 7 miles NE of Chico on damp hill side, Chico area. Comment
  SEINET10483002  Lithophragma Mary Susan Taylor 1981-5-22 Taylor 3798 Butte T23N R5E ne/se sec 30, Pulga quad. Top of ridge nder powerlines, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3621 ft. 1104 Comment
  CAS-BOT-BC435491  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile S of Lumpkin Ridge Road, about 1 1/2 miles E of Camp 18, about 8 miles E of Feather Falls 1280 Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC90016  Lithophragma parviflorum Peggy Fain 1991-4-21 21 Butte Ca. 2.5 km. E. of Richardson Springs Hotel (S. bank of Walker Creek just east of Spanish Corrals). 243 Comment
  SEINET12216581  Lithophragma parviflorum P. D. Nelson 1979-1 s.n. Butte Table Mountain, ca 200 ft W of Cherokee-Mountain Rd, ca 6 mi N of Oroville 381 Comment
  CHSC12190  Lithophragma parviflorum var. trifoliatum Lowell Ahart 1973-4-15 190 Butte Swedes Flat Road, Bangor. 304 Comment
  CHSC1654  Lithophragma parviflorum var. trifoliatum V. Holt 1935-3-27 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC316347  Lithospermum californicum A. A. Heller 1918-5-5 s.n. Butte Near Magalia. Comment
  CHSC29099  Lithospermum californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2507 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC50645  Logfia filaginoides Lowell Ahart 1990-5-25 6480 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC30307  Logfia gallica M. S. Taylor 1980-5-27 2681 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC101666  Lolium multiflorum Lowell Ahart 2009-4-26 15639 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC107077  Lolium multiflorum V. Lockie 2010-3-2 Butte Upper Bidwell Park. Found near the Horseshoe Lake area. 103 Comment
  CHSC33670  Lolium multiflorum L. Ahart 1981-5-24 2834 Butte Wash in one of the pasture fields on Peter Ahart Ranch, 2 mi e of Honcut. 50 Comment
  SEINET241452 Image available Lolium multiflorum A. A. Heller 11420 Butte 8 miles north of Oroville 2 Comment
  CHSC4384  Lolium perenne M. M. Gregg 1966-5-21 170 Butte NW end of CSC campus: around the artificial ski jump. Chico. Comment
  CHSC116699  Lomatium caruifolium var. denticulatum Lowell Ahart 2016-5-14 20826 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  UC765514  Lomatium caruifolium var. denticulatum R. F. Hoover 1937-5-18 2238 Butte 3 mi. n. Chico Comment
  UCD127730  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte north side of Big Chico Creek, on bluffs at Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC42477  Lomatium macrocarpum Lowell Ahart 1987-5-11 5616 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC30824  Lomatium utriculatum M. S. Taylor; J. D. Jokerst 1980-4-18 2534 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  JEPS119550  Lonicera hispidula Lowell Ahart 2012-2-22 17739 Butte About 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA725050  Lonicera hispidula var. vacillans L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  CAS-BOT-BC240688  Lonicera interrupta J. F. Emmel 1970-4-5 252 Butte Mud Creek near Ponderosa Way 670 Comment
  CHSC86143  Lonicera involucrata var. involucrata John Dittes 2002-6-29 625 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  SEINET10465044  Lonicera japonica Mary Susan Taylor 1975-6-22 Taylor 784 Butte California State University, Chico, campus. 61 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  SEINET6655536  Lotus nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Yellow Pine Forest.; 0 274 Comment
  SEINET3696861 Image available Lotus purshianus A. A. Heller 1938-7-20 15289 Butte Upper end Snag Lake, 7 miles east of Chaparral 1524 Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 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
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  CHSC86544  Lupinus albicaulis var. albicaulis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7860 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.5 km east-southeast of south end of Bidwell Bar bridge. 280 Comment
  POM161687  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 s.n. Butte Jonesville. 1600 Comment
  RSA0036363  Lupinus albifrons Daisie Huang 2006-8-3 06080305 Butte Butte. 1124 Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  JEPS119527  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC196336  Lupinus argenteus var. argenteus J. D. Jokerst 1980-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Cr. 609 Comment
  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC90362  Lupinus bicolor Andy Winkler 1980-4-15 4 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  SD241816  Lupinus bicolor G. K Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley: Middle Honecut Road, 1.5 miles east of CA-70, ESE of Gridley (Honcut 7.5'Q) 17 Comment
  RSA32773  Lupinus bicolor subsp. tridentatus A. A. Heller 1938-4-3 15010 Butte Between Pebtz and Cherokee. Comment
  SEINET10484925  Lupinus bicolor subsp. tridentatus Frediani 1981-3-24 FREDIANI 2 Butte Petals bluish with white banner. N side of butte creek, 6.2 mi. E of hwy 99 and skyway inerchange; ca. 2 Mi. Se Of chico. A foothill woodland. 107 Comment
  CHSC38505  Lupinus bicolor var. tridentatus Vernon Oswald 1983-3-6 120 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). Growing along the edge of Upper Park Rd. 219 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  SEINET10485237  Lupinus densiflorus var. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20n r3e ne1/4ne1/4 sec 22. Oroville quad. Nw corner of jct of hwy 70 with Hwy 149, at wicks corner, ca 4 mi. N of oroville. Assoc: trifolium hirtum. 91 Comment
  CHSC84887  Lupinus grayi R. D. Fischer 2003-6-6 8 Butte Northern Sierra Nevada. Off hwy. 32 between the Butte Meadows turn-off and Potato Patch and 5.6 miles north of hwy. 32 on county rd. 27N08 (K-Line). There is a primitive campground along Deer Cr. right after crossing the single lane bridge. Found on the banks of road-cuts at campground turn-off. 899 Comment
  SEINET10484003  Lupinus grayi Lowell Ahart 1985-6-17 Ahart 5046 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET6655084  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 4721 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City.; 0 1500 Comment
  SEINET10841147  Lupinus latifolius subsp. longipes Mary Susan Taylor 1978-7-21 Taylor 1822 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  UC204540  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico Comment
  SEINET10940184  Lupinus pachylobus Johnson 1978-4-16 Johnson 2 B Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset rd At lassen avenue, 3 mi n of chico. At edge of moist pasture in gravelly loam With grass and other annuals of valley grassland. 61 Comment
  CHSC32605  Lupinus succulentus J. D. Jokerst 1981-3-28 1270 Butte Butte College Campus along entrance in the vicinity of the eastern-most parking lot. Comment
  POM24970  Lupinus succulentus C. C. Bruce 1898-05 2454 Butte Sacramento River. Comment
  CHSC59026  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
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CHSC109082  Luzula macrantha Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  CHSC110328  Lycopus americanus B. Castro; Margie Graham 2006-8-25 1605 Butte Sacramento Valley. Ca 1.9 mi W of Highway 99 and 1 mi E of Richvale, immediately N of Richvale Hwy in Cherokee Canal. On E side of canal abt 120 ft in from toe of E levee. 32 Comment
  JEPS115358  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, 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
  JEPS120718  Lythrum portula Lowell Ahart 2013-10-16 19112 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CHSC34017  Lythrum salicaria L. Ahart 1981-7-18 2938 Butte On the bottom of a deep drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CAS-BOT-BC342708  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC342721  Madia elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC101120  Madia elegans subsp. vernalis Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. 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
  SEINET10904899  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2707 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC6612  Magnolia M. MacArthur 1968-6-13 312 Butte SW of bridge b PSA building, along NW side of Big Chico Creek, Chico State College campus. 60 Comment
  CAS-BOT-BC512737  Maianthemum stellatum C. R. Quick 1953-8-11 53 -99 Butte Rag Dump meadow south east of Stirling City Comment
  CHSC34706  Malacothrix floccifera M. S. Taylor 1981-5-21 3793 A Butte E side of Mayaro Rd, ca. 1/2 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70. 609 Comment
  JEPS124029  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  CHSC84639  Malus sylvestris Bryan Gabbard 2002-4-30 56 Butte Paradise Lake. Found two feet from the water's edge next to the path. Comment
  RSA754953  Malva nicaeensis L. Ahart 2009-6-12 15840 Butte 10-50 yards north of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC348087  Matricaria discoidea Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC2397  Meconella californica R. Carter 1965-3-14 164 Butte 457 Comment
  POM97345  Meconella californica C. C. Bruce 1897-03 2018 Butte Foothills near Chico Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  SEINET12155167  Medicago hispida P. L. Ricker 1912-1 3949 Butte Chico Comment
  JEPS115505  Medicago lupulina Lowell Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  SD165  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville, in open pine and fir woods Comment
  CHSC82664  Melica californica Tara Morgan 2002-4-23 37 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate trail of Highway 32. 414 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  SEINET10599356  Melica californica Lawrence P. Janeway 1995-6-19 Janeway 4797 Butte Cascade quad. T21N R6E S25 SE1/4 NW1/4. About 0.5 mi east of the western end of Jackson Ranch Ridge. Open areas in open ponderosa pine dominated mixed conifer forest. 1097 Comment
  JEPS106314  Melica geyeri Lowell Ahart 2004-6-22 11110 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  SEINET10901843  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4231 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC262456  Melica subulata E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  CHSC11977  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  LA12166  Melica subulata E. B. Copeland; 1929-7-16 338 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC46439  Melica torreyana Lowell Ahart 1989-5-10 6221 Butte Along a dirt road, near a stream, near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 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
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  SEINET10498169  Mentha X piperita Mary Susan Taylor 1978-9-9 Taylor 1923 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC109759  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10498159  Mentha arvensis Mary Susan Taylor 1975-10-4 Taylor 957 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC20720  Mentha canadensis M. S. Taylor 1975-8-31 885 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC51266  Mentha canadensis Lowell Ahart 1990-10-3 6622 Butte Growing on the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek bridge across Lake Oroville. 259 Comment
  UCD125040  Mentha canadensis L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  UC1562283  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte on bottom of Wyman Ravine on e side of Lincoln Boulevard Palermo (Palermo) 45 Comment
  SFV16939  Mentha spicata J. N. Hogue 1980-9-6 83 .8 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC94587  Mentha spicata var. spicata Lowell Ahart 2006-9-13 13319 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD3167  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville. Found on two rocks-slides in full sunlight, along Butte Creek. Comment
  CHSC42936  Mentzelia laevicaulis Lowell Ahart 1987-7-3 5783 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC92569  Micranthes integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC429038  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CAS-BOT-BC429073  Micranthes odontoloma E. B. Copeland 1931-7-20 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 1500 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  SFV10349  Micropus californicus M. L. Vincent 1963-6-6 373 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  CHSC33366  Micropus californicus var. californicus Steven Azevedo 1980-4-16 18 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC8146  Micropus californicus var. californicus J. G. Moore 1969-4-13 78 Butte Pentz Rd., 200 yds. e of Hwy 99, on s side of road. 60 Comment
  UCD134514  Micropus californicus var. californicus M. Vincent 1963-6-6 373 Butte one mile west from Nelson Bar Road. Comment
  CAS-BOT-BC348703  Microseris acuminata John Thomas Howell; Gordon H. True 1967-5-7 42172 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  CHSC46335  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Along the edges of a dirt road, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET178518  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville by Butte Cr 1500 Comment
  CHSC42770  Mimetanthe pilosa Lowell Ahart 1987-8-8 5853 Butte On the bottom of North Honcut Creek, about 2miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  JEPS14976  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  SFV3372  Mimulus bicolor B. Fuller 1962-5-8 Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  JEPS118486  Mimulus breweri Lowell Ahart 2011-7-9 17562 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  UC1594698  Mimulus breweri Lowell Ahart 1992-7-21 6802 Butte about 2 air mi ne Philbrook Reservoir (s side of hollow); Coon Hollow 1737 Comment
  JEPS10563  Mimulus congdonii R. F. Hoover 1938-4-24 3240 Butte 3 mi n Chico Comment
  CHSC118861  Mimulus glaucescens Christopher T. Ivey 2017-5-27 390 Butte Honeyrun Road,, about 4.5 km NE of bridge crossing Butte Creek, roadsie ditch on E side of road. 318 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
  RSA178677  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale Grade about 5 miles from Paradise Comment
  UC1023693  Mimulus glaucescens F. W. Pennell and A. A. Heller 1940-6-4 25667 Butte above Richardson Springs 182 Comment
  UCD122720  Mimulus glaucescens E. Rilla 1976-4-4 14 Butte ca. 3 ft n of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 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
  POM252825  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  UC1012165  Mimulus guttatus F. W. Pennell and H. L. Mason 1940-6-5 25681 a Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  SEINET5561543  Mimulus guttatus H. S. Gentry, S. Koch 1962-1 19782 Butte 6 mi. NE of USDA Field Station, Chico, along road to Centerville. Comment
  SEINET8360335  Mimulus guttatus Unknown 1991-4-19 337 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 air-miles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-miles east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  JEPS7098  Mimulus moniliformis Rimo Bacigalupi with L. R. Heckard 1951-8-7 3474 Butte 1/4 mi e Butte Meadows road (at crossing of Chaparral-Butte Meadows road, at very edge of boundary with Tehama Co.); Butte Creek 1325 Comment
  CHSC31022  Mimulus moschatus M. S. Taylor 1980-10-6 3361 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC44790  Mimulus moschatus R. Banchero 1980-7-7 283 Butte Along County Rd 0.9 mi E of the town of Feather Falls. 975 Comment
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  SEINET10962487  Mimulus pilosus Mary Susan Taylor 1978-9-8 Taylor 1880 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  UC426952  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville 1550 Comment
  UC175540  Mimulus torreyi A. A. Heller 1913-6-7 10799 Butte near Stirling 1074 Comment
  CHSC38293  Minuartia californica Vernon Oswald 1983-2-20 91 Butte Upper Bidwell Park, Chico, on the north rim at the level of the w end of Horseshoe L. 128 Comment
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  RSA636047  Minuartia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  JEPS117627  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
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC45575  Minuartia douglasii Lowell Ahart 1974-4-11 362 Butte Along a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  POM101121  Minuartia douglasii C. C. Bruce 1897-06 1958 Butte Fields near Chico. Comment
  CHSC24647  Moehringia macrophylla S. Deaton 1976-4-14 11 Butte NW edge of Feather Falls trail, 1 5/8 mi n of Falls parking lot. 853 Comment
  CDA3373  Mollugo verticillata L. P. Janeway, B. Castro 1999-6-4 6451 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Bridge. Comment
  CAS-BOT-BC435066  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC435069  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville 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
  CHSC11987  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville. 1550 Comment
  SD6867  Monardella odoratissima subsp. pallida Daniel Cleveland 1882-7-14 Butte Comment
  CHSC102988  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC76342  Monardella sheltonii L. P. Janeway 1999-7-17 6504 Butte Steep northwest-facing slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  UC1609442  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  CDA40936  Monardella venosa James D. Jokerst & Barbara Castro 1992-5-19 3355 Butte Unnamed canyon north of Nugen Canyon on the south side of Neal Rd. near the Butte County Sanitary Landfill. Comment
  JEPS100227  Monardella villosa subsp. villosa Dean W. Taylor 2002-7-3 18218 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  RSA755352  Montia fontana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  UCD80681  Montia fontana CNPS SN Foothill Team 2005-4-15 SNFN 0082 c Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (ca. 20 m from the east fence and ca. 40 m from the north fence). 81 Comment
  CAS-BOT-BC444891  Montia fontana L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. 1798 Comment
  CHSC106876  Montia fontana subsp. amporitana Lowell Ahart 2011-4-28 17330 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
  CHSC52116  Montia fontana subsp. chondrosperma Dena Gracey 1979-3-27 21 Butte S edge of Table Mountain 6 mi n of Oroville off Cherokee-Table Mt. Road .25 mi off road. 365 Comment
  SEINET10572665  Montia linearis Mary Susan Taylor 1981-5-22 Taylor 3801 Butte T23N R4E sw/sw sec 24, Pulga quad. In Flea Valley, ca. 100 ft E of jct of Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft N of Sawmill Peak Rd, ca. 4 air mi E of Magalia. 3700 ft. 1128 Comment
  CDA13311  Montia parvifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13157 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS 23N60. Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  CHSC104007  Morus alba Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16743 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  SEINET10605679  Muhlenbergia andina Vernon H. Oswald, Lowell Ahart 1989-7-21 Oswald 3885 Butte T26N R5E nw/nw/S29, Red Fir Forest. Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. Along a small drainage in a marshy part of the meadow. 1780 Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC47698  Muhlenbergia filiformis Lowell Ahart 1989-9-21 6395 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC78362  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 Comment
  UC600755  Muhlenbergia filiformis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CAS-BOT-BC262586  Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 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
  CHSC55809  Najas gracillima Vernon H. Oswald; Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 Comment
  SEINET3890285  Najas graminea Herbert L. Mason, Verne E. Grant 1946-8-15 13047 Butte Near caretaker's house, Greylodge Game Refuge.; 0 Comment
  SEINET10871965  Narthecium californicum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  UCD116084  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC34704  Navarretia divaricata M. S. Taylor 1978-7-19 1764 Butte On e side of Upper Scots John Rd, ca. 3 mi n of its jct with Scots John Rd. ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC112682  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Open disturbed area, 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
  CHSC39663  Navarretia filicaulis Lowell Ahart 1983-6-21 4092 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  SEINET10969161  Navarretia filicaulis Mary Susan Taylor 1980-7-6 Taylor 3063 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  RSA122934  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mile west of Pentz. 137 Comment
  CHSC30683  Navarretia intertexta subsp. intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2758 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC31164  Navarretia leptalea M. S. Taylor 1978-7-19 1762 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC35115  Navarretia leptalea R. A. Schlising 1980-7-7 3856 Butte E part of county, Lumpkin Ridge, along Lumpkin/La Porte Road, just W of road dropping down to Fall River. 1280 Comment
  RSA4130  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. 1650 Comment
  CHSC4163  Navarretia leucocephala R. Carter 1966-4-21 350 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side of Old Cherokee Rd., 6.55 mi. from Chico Rd., in vernal pool. 274 Comment
  CHSC66962  Navarretia leucocephala subsp. leucocephala James D. Jokerst; Chuck Ricard 1993-4-12 3948 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  CHSC67262  Navarretia nigelliformis subsp. nigelliformis James D. Jokerst; Barbara Castro 1992-5-19 3352 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CAS-BOT-BC230475  Navarretia nigelliformis var. nigelliformis David D. Keck 1933-5-30 2415 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  CHSC91111  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  JEPS117327  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico 144 Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC118892  Nemacladus capillaris R. A. Schlising 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  CHSC50658  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  RSA0006287  Nemacladus montanus E. Brooks s.n. Butte Enterprise. Comment
  JEPS115283  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UC196272  Nemophila heterophylla A. A. Heller 1914-5-8 11376 Butte plateau above Clear Creek (on the Paradise Road); above Clear Creek Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  CHSC39092  Nemophila maculata R. A. Schlising 1980-4-7 3560 Butte N of Rackerby in s part of county; Swedes Flat Road, 0.2 mile e of Hurleton-Swedes Flat Road. Comment
  SEINET10497060  Nemophila pedunculata Mary Susan Taylor 1984-4-6 Taylor 5400 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
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  UCD14585  Notholithocarpus densiflorus Robert Willoghby 1985-12-17 s.n. Butte California, Butte Co.; Forbestown, ca. 2-3 miles northwest of Challenge Station (by air), on the Kenneth Haddick property (ca. 150 acres with old homestead, some pasture and cows, but largely Pinus ponderosa and Pseudotsuga menziesii timberland), Comment
  CHSC42230  Odontostomum hartwegii L. A. Hinman 1986-4-21 18 Butte Ca. 7 mi ne of Chico, 4 mi s of Centerville. 237 Comment
  JEPS104455  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  JEPS120090  Odontostomum hartwegii Lowell Ahart 2012-6-2 18140 Butte About 100 yards north 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
  POM253051  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Near the Chico Airport Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC35079  Oenothera elata subsp. hirsutissima R. A. Schlising 1981-11-3 4219 Butte Feather River Canyon along Hwy 70, ca 0.1 mi S of Arch Rock Tunnel. 463 Comment
  CHSC47037  Oenothera elata subsp. hirsutissima R. A. Schlising 1985-10-6 4480 Butte At Sacramento River, W of Chico, N of Chico Landing site. Along E edge of river. 36 Comment
  CHSC48638  Oenothera elata subsp. hirsutissima Vernon Oswald 1987-6-12 2993 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC116980  Orobanche fasciculata Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC26829  Orobanche fasciculata M. S. Taylor 1978-5-6 1621 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. Comment
  SEINET12328344  Orthocarpus campestris Unknown 1984-1 4585 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 Comment
  RSA178636  Orthocarpus lithospermoides var. bicolor A. A. Heller 1927-5-10 14370 Butte From the type station, in a grassy meadow near Clear Creek Post Office Comment
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  UCR182945A  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-20 2334 Butte Sacramento Valley, west of Biggs Rice Experimental Station, east of Cherokee Canal, approximately 0.5 km south of Hwy 162 29 Comment
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC43298  Oxalis laxa Lowell Ahart 1979-4-6 1822 Butte On the west side of North Honcut Creek, about 3/4 mile north-east of the bridge across North Honcut Creek and Avacado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CDA38814  Oxalis pes-caprae L. Ahart 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC3541  Oxalis pes-caprae John Francis 1966-3-19 69 Butte On hillside S. of covered bridge, Honey Run. Comment
  CHSC9144  Oxalis rubra L. W. Gray 1970-5-1 28 Butte Collected at 710 W. 3rd street on lawn in front of house, Chico. Comment
  JEPS109973  Packera eurycephala var. lewisrosei Dean W. Taylor 2004-6-17 19111 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CHSC39336  Panicum acuminatum Lowell Ahart 1983-6-26 4138 Butte Along the edges of the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC45210  Panicum acuminatum Lowell Ahart 1984-7-19 4726 Butte On road banks, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  JEPS94729  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte about 7 air mi n Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CHSC97686  Panicum dichotomiflorum Lowell Ahart 2007-11-3 14562 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC66462  Panicum dichotomiflorum subsp. dichotomiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7755 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 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
  SBBG649  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 mi N of Gridley Comment
  SEINET191202 Image available Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  CAS-BOT-BC202818  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 450 Comment
  CHSC37125  Paxistima myrsinites L. Ahart 1982-9-13 3827 Butte Along edge of dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42059  Paxistima myrsinites Lowell Ahart 1986-10-16 5402 Butte On the east side of the road, about 1 mile south-west of the Forbestown Diversion Dam, about 4 miles north-east of Forbestown. 548 Comment
  CHSC108833  Pectocarya penicillata Lowell Ahart 2012-4-17 17881 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast 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
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 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
  CHSC30367  Pellaea mucronata J. D. Jokerst 1979-3-20 1151 Butte Top of North Table Mt, W edge at the waterfalls of the S branch of Coal Cr. Canyon. 365 Comment
  SEINET10867065  Pellaea mucronata Mary Susan Taylor 1979-3-19 Taylor 1935 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  SEINET10899920  Pellaea mucronata Mary Susan Taylor 1980-2-23 Taylor 2315 Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  SEINET10932921  Pellaea mucronata Mary Susan Taylor 1981-5-15 Taylor 3733 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  UC122749  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1879 83 Butte hills near Cold Canyon Comment
  SEINET10547914  Penstemon azureus Mary Susan Taylor 1978-5-6 Taylor 1581 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC99572  Penstemon azureus var. azureus L. P. Janeway 2008-5-26 9372 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  NY571158  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25675 Butte Route 24, 6 miles up, along Feather River, above Oroville 91.4 Comment
  SEINET10547986  Penstemon gracilentus Mary Susan Taylor 1978-7-19 Taylor 1780 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC52140  Penstemon heterodoxus var. shastensis L. P. Janeway; R. A. Schlising 1988-7-1 2917 Butte Bench on N-facing flank of Snow Mtn. 2011 Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  NY627343  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371.6 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CHSC49038  Penstemon personatus Vernon Oswald 1987-6-29 3044 Butte High Rock Ravine at a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  UC1602332  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte on gravel bar by Butte Creek (Jonesville); , Jonesville 1500 Comment
  CHSC28894  Pentagramma triangularis M. S. Taylor 1980-3-1 2348 Butte On the se facing bluffs overlooking Hamlin Canyon, ca. 1/4 se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC28896  Pentagramma triangularis M. S. Taylor 1980-3-1 2339 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 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, a 844 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  CAS-BOT-BC77080  Pentagramma triangularis subsp. triangularis John Thomas Howell 1959-9-26 35091 Butte Sierra Nevada - Pulga Bridge, N. Fk. Feather River 411 Comment
  CHSC40222  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1852 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  UC195447  Perideridia bolanderi subsp. involucrata A. A. Heller 1914-7-13 11572 Butte on volcanic hills 5 mi e Oroville Comment
  CAS-BOT-BC211292  Perideridia gairdneri subsp. gairdneri Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1389952  Perideridia lemmonii T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5988 Butte 1 mi ne Paradise (by reservoir); Paradise reservoir Comment
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  SEINET12121858  Perideridia oregana Unknown 1985-1 5061 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yards S of dirt road 975 Comment
  CHSC31065  Perideridia parishii subsp. latifolia M. S. Taylor 1978-7-19 1788 Butte On n end of Snag Lake between creek and Humbug Rd, ca. 3 mi s of jct of Humbug Rd and Scotts John Rd. 1920 Comment
  SEINET10454555  Perideridia parishii subsp. latifolia Mary Susan Taylor 1978-7-19 Taylor 1788 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CHSC6631  Persicaria M. MacArthur 1968-6-17 298 Butte SE edge of Big Chico Creek below the Headhouse, Chico State College campus. 60 Comment
  UCD99056  Persicaria capitata H. Clem Meith 1966-9-5 Butte Oroville. Comment
  CHSC37256  Persicaria hydropiper L. Ahart 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC26647  Persicaria maculosa M. S. Taylor 1977-11-10 1513 Butte In dry irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CHSC46192  Persicaria maculosa L. P. Janeway; C. A. Janeway 1986-10-5 1914 Butte Along Pine Cr at Cana Hwy. Gravel bar along the creek. 48 Comment
  CHSC76290  Persicaria maculosa Lowell Ahart 1999-9-21 8270 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
  CHSC66676  Persicaria punctata Vernon H. Oswald; Lowell Ahart 1996-7-22 8077 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common among tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC23287  Petrorhagia dubia T. C. DeWitt 1971-4-4 26 Butte 5.6 mi. NW of Oroville on Table Mtn. W side of rd. 213 Comment
  SEINET10546873  Phacelia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5228 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC721  Phacelia egena P. Delaplane 1965-4-8 57 Butte Under overhang of cliff above creek on Richardson's Ranch. Ca 1.2 mi from Chico Municipal Airport on Richardson Springs Rd. Ca. 1/4 mi inside gate. 274 Comment
  CHSC84912  Phacelia egena Janice Morris 1995-4-24 93 Butte Ca. 1/4 mi. n of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10496979  Phacelia heterophylla var. pseudohispida Mary Susan Taylor 1978-7-19 Taylor 1784 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  NY61541  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte On the Feather River Highway a mile or two west of Arch Rock Tunnel Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  CHSC39536  Philadelphus lewisii Lowell Ahart 1983-6-21 4080 Butte Found growing on dry rocky soil along Bloomer Hill Road, about 3/4 mile west of the Oroville-Quincy Highway, about 15 miles north-east of Oroville. Label says Section 6. 425 Comment
  CHSC87951  Phleum pratense Lowell Ahart 2004-6-22 11124 Butte On the north side of Hupp Coutolenc Road, about 1/2 mile north of Paradise Lake, about 1/2 mile northeast of De Sabla Reservoir, about 4 miles (air) southwest of Stirling City. 821 Comment
  CHSC1305  Phlox speciosa subsp. occidentalis T. Morgue 1932-4-18 Butte Concow Reservoir. 579 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  SEINET10492843  Phoradendron juniperinum subsp. libocedri Mary Susan Taylor 1981-5-15 Taylor 3739 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CDA22378  Phoradendron libocedri L. Ahart 2000-9-27 8696 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  CHSC3605  Phoradendron villosum Gerry Carrauthers 1966-2-14 6 Butte Far end of Bidwell Park. 8 mi. N. E. of city of Chico. Comment
  CHSC86068  Phoradendron villosum R. D. Fischer 2004-1-4 46 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. East side of Upper Park Road between Diversion Dam and Salmon Hole. 213 Comment
  RSA691014  Phoradendron villosum L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Lahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4.5 miles east of Manzanita Avenue, Chico. 183 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC66085  Phyla nodiflora var. rosea Vernon H. Oswald 1996-5-22 7619 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  SEINET10970314  Physocarpus capitatus Mary Susan Taylor 1981-5-17 Taylor 3805 Butte T22N R3E ne sec 10, Paradise SE quad. Along creek, Phillips property, 685 Wagstaff, Paradise. Riparian Woodland in Yellow Pine Forest; 1900 ft. 579 Comment
  CAS-BOT-BC76937  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC78115  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  JEPS98331  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte 10 air miles NW of: slickens from the Cherokee mine, E side of Clark Road (Hwy 191), about 200 yds S of Dry Creek Oroville; ; <coords cont.: NW 1/4> 60 Comment
  SEINET10470796  Pilularia americana Lowell Ahart 1983-6-6 Ahart 4032 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC78448  Pinus contorta subsp. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville 1524 Comment
  NY61953  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC59486  Pinus ponderosa Micheal Deal 1992-4-19 2 Butte Private Property, 449 Castle Drive, w of Laural St., Paradise. 609 Comment
  UC600637  Piperia colemanii H. F. Copeland 1932-7-23 Butte above Jonesville hotel; Jonesville 1600 Comment
  CAS-BOT-BC136583  Piperia leptopetala Chester Dudley 1940-6-1 s.n. Butte Field redacted by CAS, contact the data manager for more information Comment
  CDA13729  Piperia leptopetala G. F. Hrusa, T. D. Wilfred 1997-6-27 13907 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  CHSC65869  Piperia transversa L. P. Janeway 1995-7-16 4862 Butte Along Jordan Hill Road 0.3 mi south of the turn to Sawmill Peak Lookout; about 2 mi east of Magalia. 929 Comment
  SBBG28894  Piperia unalascensis E. B. Copeland 1929-7-13 Butte Jonesville 1500 Comment
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  CHSC110105  Pistacia chinensis L. P. Janeway 2012-9-23 11060 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Big Chico Creek between a high and low split of South Rim Trail, overlooking the west end of the golf course. 116 Comment
  CHSC43590  Pistacia terebinthus Vernon Oswald 1987-4-29 2351 Butte Chico Tree Improvement Center (former USDA Plant Introdution Station) in se Chico 68 Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10834170  Pityrogramma triangularis Mary Susan Taylor 1980-6-14 Taylor 2869 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET10899921  Pityrogramma triangularis Mary Susan Taylor 1981-4-5 Taylor 3483 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
  CAS-BOT-BC6382  Pityrogramma triangularis var. semipallida John Thomas Howell 1959-9-20 34696 Butte Feather River Highway, 9 mi NE of Oroville 182 Comment
  SEINET10529962  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-1-5 Taylor 3368 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
  CHSC67180  Plagiobothrys austiniae James D. Jokerst 1989-4-8 3092 Butte North Table Mtn., ca. 200 m N of Cherokee Rd. at a point where Cherokee Rd. drops off east edge of mesa. Comment
  HSC85966  Plagiobothrys fulvus J. Hunter 1986-3-5 21 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC35325  Plagiobothrys fulvus var. campestris M. S. Taylor; K. Tharp 1982-4-8 4281 Butte SE corner of jct of Hys 149 and 99, ca. 10 mi s of Chico. 68 Comment
  CHSC31252  Plagiobothrys glyptocarpus R. A. Schlising 1980-5-18 3591 Butte NE of Chico Airport and WSW of Richardson Springs at vernal pool on Cohasset Ridge. 249 Comment
  CHSC60966  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CDA34720  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  UCD169853  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte About 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles(air) northeast of Oroville. About 100 yards west of the fence. 398 Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  UC480661  Plagiobothrys hispidulus H. F. Copeland 1930-6-10 Butte Jonesville 1524 Comment
  UC1377778  Plagiobothrys nothofulvus John Ingram 1960-4-6 508 Butte about 1 mi n junction of Pentz Road and Nelson Bar Road (slope below Pentz Raod, s of Paradise) 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
  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
  CHSC117424  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC29269  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-15 3366 Butte Richvale vernal pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC65897  Plagiobothrys stipitatus var. stipitatus Vernon H. Oswald 1996-4-10 7355 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a check in an old irrigated pasture at the S end of Tract 7, Sanctuary 2. 33 Comment
  CHSC28150  Plagiobothrys tenellus Robert A. Schlising 1979-4-22 3375 Butte Along the Skyway, ca 1 mi s of jct with Neal Road in Paradise. Comment
  JEPS115845  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET12334063  Plantago bigelovii L. R. Perry 1988-1 9 Butte vic. Salmon Hole, ca 5 mi E of Chico Municipal Golf Course 122 Comment
  CHSC33680  Plantago coronopus L. Ahart 1981-5-16 2795 Butte Along edge of dirt roads on Gray Lodge Waterfowl Mgmt Area, 1 mi sw of Gridley. 35 Comment
  CHSC77990  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte On the edge of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS98424  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte 5 air mi SW of Oroville (edge of a poor dirt rd, S side of the access rd to boat ramp at the Thermolito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CHSC10737  Plantago erecta Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  RSA0036649  Plantago erecta Lowell A. Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. 143 Comment
  UCSC008325  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte North side of South Rim Trail, west of the power lines, Upper Bidwell Park, aout one (air) mile northeast of Chico. 143 Comment
  CHSC116306  Plantago major Lowell Ahart 2015-11-18 20663 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
  CDA42769  Plantago virginica L. Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CDA6609  Plantago virginica L. Ahart 2000-5-17 8366 Butte On the southeast margin of the Thermalito Afterbay, west of the poor dirt road, south of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  CHSC41261  Platanthera leucostachys S. C. Morey 1983-7-21 479 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM193018  Plectritis ciliosa subsp. insignis R. M. Austin 1896-07 824 Butte [No location information provided.] Comment
  RSA32918  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  CHSC29796  Pleuricospora fimbriolata M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2868 Butte On trail embankment, to Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC458153  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte 4 miles E of Cherry Hill, south of Willow Creek, about 100 meters SW of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles E of Cherry Hill, about 7 miles NE of Butte Meadows 1828 Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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Mar 7 2011
  CAS-BOT-BC244403  Poa annua John Thomas Howell 1961-9-22 36719 Butte Bank of Feather River, Oroville 53 Comment
  CHSC49697  Poa bolanderi Vernon H. Oswald 1983-8-4 969 Butte Humboldt Summit, ca 3 mi ne of Jonesville. 1993 Comment
  UC600760  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville 1524 Comment
  CHSC42453  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CAS-BOT-BC255067  Poa compressa Lowell Ahart 1988-6-29 6090 Butte E of Galen Ridge Road, about 0.5 mile E of the Oroville Quincy Highway, N of Lake Madrone 621 Comment
  CHSC38845  Poa compressa Vernon Oswald 1983-6-24 762 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  UC1586632  Poa compressa Lowell Ahart 1991-7-22 6665 Butte e of Springtown Rd Lake Oroville (w side of Powell Creek) 243 Comment
  RSA712924  Poa secunda L. Ahart 2006-5-10 12615 Butte On the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga. 355 Comment
  CHSC30282  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst, R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. On granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  CHSC45030  Pogogyne douglasii Pauleen Broyles 1988-4-6 1101 Butte The Nature Conservancy Vina Plains Preserve. West of reservoir in n.e. portion of Addition, in an extensive low area. Comment
  UC762123  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 mi. SW of Oroville Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  UCD80398  Pogogyne zizyphoroides CNPS SN Foothill Team 2005-4-12 SNFN 0077 f Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC23447  Polanisia dodecandra subsp. trachysperma K. R. Stern 1974-7-23 Butte Neal Road, 0.1 mi e of junction with Hwy 99 e, ca 6 mi se of Chico. Comment
  CHSC33649  Polanisia dodecandra subsp. trachysperma M. Merryman; R. Banchero 1979-9-23 43 Butte SW of Chico, just e of Ord Ferry and Sacramento River. 30 Comment
  POM74713  Polemonium occidentale Mrs. R. M. Austin 1895-07 512 Butte Willow Creek (Devils Garden) 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
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET11263758  Polygala cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi se of Paradise on Pentz Road.; 0 427 Comment
  RSA76964  Polygala cornuta var. cornuta F. W. Peirson 1926-6-21 6764 Butte About 10 miles east of Chico on Humboldt Road. Comment
  SEINET10537769  Polygonum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5153 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  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
  CHSC31768  Polygonum aviculare L. Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, ca, 2,5 mi n and 1/4 mi e of Honcut, in farmed field. 50 Comment
  CHSC41905  Polygonum aviculare Lowell Ahart 1976-9-21 1200 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CHSC108544  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-20 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. 66 Comment
  UCD80668  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-5 SNFN 0157 d Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  JEPS94976  Polygonum bolanderi Vernon Oswald and Lowell Ahart 1997-9-9 8861 Butte 2.0 mi ne of Lomo (Humboldt Road between Lomo and Butte Meadows, near the 4833 ft. benchmark); Humboldt Road Comment
  POM161664  Polygonum davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  CHSC42027  Polygonum douglasii subsp. douglasii Lowell Ahart 1986-8-15 5390 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  JEPS87148  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC39081  Polygonum douglasii subsp. spergulariiforme R. A. Schlising 1980-6-30 3798 Butte Meadow 0.1 mile s of junction Humboldt road and Skyway at Butte Meadows; along Skyway. 1341 Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1101161  Polygonum lapathifolium Herbert L. Mason and Verne Grant 1946-8-14 13028 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CHSC100914  Polygonum minimum R. A. Schlising; Lawrence Janeway 1988-7-22 4624 Butte North of Philbrook Lake, near Plumas County line. 1935 Comment
  UC204448  Polygonum phytolaccifolium A. A. Heller 1914-8-8 11672 Butte Jonesville; stream bank 1524 Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC90096  Polypodium calirhiza Charlie Crannell 1991-4-23 5 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  HSC103916  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte About 9 mi. (air) NE of Chico; east edge of Big Chico Creek, ~100 yds. S of trail crossing creek, ~100 yds W of Ten Mile House Road; ~.75 mi. W of Hwy. 32 190 Comment
  JEPS107676  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam 304 Comment
  CHSC99009  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
  CAS-BOT-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CAS-BOT-BC233056  Polypogon interruptus Lowell Ahart 1980-7-29 2515 Butte Along lower Forbestown Road 750 Comment
  CAS-BOT-BC233059  Polypogon interruptus Lowell Ahart 1983-6-26 4110 Butte Along Ponderosa Way, ca. 1/8 mile E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 miles NE of Oroville 500 Comment
  CHSC2177  Polypogon interruptus H. Silberman; D. Isaac 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 1/2 mi. ENE of Chico. 243 Comment
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  SEINET10470609  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4122 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
  SEINET10530115  Polystichum imbricans Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3470 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CAS-BOT-BC72296  Polystichum imbricans subsp. imbricans John Thomas Howell; Gordon H. True 1967-6-11 42566 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  UCD138221  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  UCR88931  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte Along the Biggs Princeton Hwy, under P.G. and E. power lines, about 1 mi west of Biggs 29 Comment
  CHSC8768  Potamogeton diversifolius S. Chulasmai 1966-4-15 10 Butte Keefer Rd, up to northern Chico. Comment
  UC1562436  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte on e side of Forbestown Reservoir (on e side of the road, at the Forbestown Generator) 487 Comment
  JEPS120837  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1.75 miles north and 1.5 miles east of Honcut, about 12 air miles southeast of Oroville. Comment
  CHSC50855  Potamogeton foliosus var. foliosus Vernon Oswald 1990-7-28 4406 Butte De Sabla Lake, near the Skyway between Magalia and Stirling City. 801 Comment
  CHSC31817  Potamogeton illinoensis L. Ahart 1977-9-8 1569 Butte In North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33656  Potamogeton natans R. Schlising; J. Fuller, M. Merryman, K. Tarp 1981-7-28 4175 Butte N of Inskip in NE part of county; Coon Hollow; in pond. 1752 Comment
  CAS-BOT-BC453738  Potamogeton natans Lowell Ahart 1981-9-21 3198 Butte Along French Creek 1300 Comment
  SEINET3077020 Image available Potentilla flabellifolia Marc Mittleman 1980-8-1 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  UCR190829  Potentilla glandulosa 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
  CHSC45585  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2047 Butte Along the rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. 853 Comment
  CHSC63976  Proboscidea louisianica B. Castro 1987-8-6 202 Butte E side of Chico Cyn as it heads NE. 91 Comment
  UC195448  Proboscidea lutea A. A. Heller 1914-8-20 11685 Butte near Dry Creek (on Oroville-Chico rd 12 mi from Chico) Comment
  UCD125325  Prunella vulgaris L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC43834  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-20 2266 Butte Along Fall River ca 2 mi straight line NE from Camp Eighteen. 1173 Comment
  CHSC43836  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-13 2200 Butte Flea Valley. 0.1 mi from Concow Rd on road into Flea Valley. 1127 Comment
  JEPS121993  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC159923  Prunus emarginata H. F. Copeland 1920-8-29 160 Butte Jonesville wood 1219 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC65445  Pseudognaphalium thermale Vernon Oswald 1987-7-29 3156 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CAS-BOT-BC72550  Pteridium aquilinum T. P. Spira 1974-4-28 7 Butte along Contolene Rd, ca. 2 mi e of Paradise 609 Comment
  CHSC30732  Pteridium aquilinum var. pubescens M. S. Taylor 1980-5-27 2649 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC57334  Pteridium aquilinum var. pubescens Robert C. Hill 1990-4-10 7 Butte Large population at junction of Enterprise Bridge and south Fork Feather River, 13 mi e of Oroville. 426 Comment
  CHSC2418  Pterospora andromedea R. Carter 1965-6-21 258 Butte Found along E side of Oroville-Quincy Rd. 1.05 mi. S of Buckeye Water Hole, growing ca. 15' from road. 1219 Comment
  POM132116  Pterospora andromedea Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC474261  Pterospora andromedea H. F. Copeland 1930-7-21 Butte Butte Creek Jonesville Comment
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC38648  Pyracantha fortuneana Vernon Oswald 1983-5-22 525 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CHSC110840  Pyrola aphylla David Isle; Ana Mendez 1989-7-3 f 2009 Butte Mendocino Natl. Forest-North Coast Ranges Briscoe Creek Watershed. N sslope of Noel Slprings Ridge, 0.9 mi NW (up) Clover Creek Rd 20N41 from 20N71/20N41. N of cull deck. 1292 Comment
  CHSC61332  Pyrola picta Lowell Ahart 1993-7-22 7076 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SD3515  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  UC726204  Pyrola picta A. A. Heller 1941-6-22 16181 Butte at Cohassett Comment
  UC747785  Pyrola picta E. B. Copeland Aug 1942 Butte Jonesville Comment
  SEINET10449210  Pyrola picta subsp. integra Mary Susan Taylor 1977-8-17 Taylor 1483 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CAS-BOT-BC45810  Quercus H. F. Copeland 1920-7-6 35 Butte near Jonesville 1219 Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  SEINET13953128 Image available Quercus berberidifolia T. A. Ranker, P. G. Trapp 1994-1 1619 Butte Pence Road, south of Paradise, T21N, R4E, S6 ca 1,300 ft (395m). 396 Comment
  CHSC96810  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CHSC104826  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  CDA21944  Quercus kelloggii L. Ahart 1999-6-12 8084 Butte Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS95964  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1135701  Quercus lobata H. A. Jensen 1934-10-25 389 Butte 1.5 mi n Penty; Chico Quad., Dry Creek 152 Comment
  CHSC21385  Quercus nigra M. S. Taylor 1975-6-22 785 Butte On s side of Big Chico Creek, ca. 15 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC8558  Quercus suber M. MacArthur 1968-6-12 322 Butte NE side of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  POM219180  Quercus vacciniifolia H. F. Copeland 1928-8-14 335 Butte Neighborhood of Jonesville, above Scotch-John Creek. 1829 Comment
  CAS-BOT-BC104689  Quercus wislizeni A. A. Heller 1913-4-6 10716 Butte Hills near Big Chico creek, E of Chico Comment
  CHSC52775  Ranunculus aquatilis var. hispidulus R. Preston; R. Banchero, J. Fuller, R. A. Schlising 1981-7-21 4159 Butte NE part of county, N of Snow Mountain ridge. In small lake. 1950 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CAS-BOT-BC378986  Ranunculus arvensis Lowell Ahart 1980-5-10 2234 Butte Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CHSC116742  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 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
  SEINET10535966  Ranunculus canus Mary Susan Taylor Taylor 989 Butte Bidwell Park, Chico. Comment
  UC118186  Ranunculus canus Mrs. R. M. Austin April 1896 Butte e Chico Comment
  CHSC23895  Ranunculus canus var. canus R. W. Conover 1975-4-18 1 Butte Cole Canyon area of Table Mtn., ca. 6 mi nw of Oroville, along creek 60 yds w of waterfall. 381 Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  SD48507  Ranunculus occidentalis E. K. Balls 1957-5-22 22518 Butte Sw. shore, Lake Almanor, w. of Big Meadows Dam 1402 Comment
  UCD96844  Ranunculus occidentalis P. Thompson 1996-4-26 42 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  SEINET215121  Ranunculus occidentalis var. eisenii K. Corson 1969-4-6 7 Butte 10 mi E of Chicao on CA Hwy 32 Comment
  CHSC11812  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  POM219012  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 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
  POM94326  Raphanus sativus C. C. Bruce 1897-04 1941 Butte [No locality information provided] Comment
  SEINET13946281 Image available Rhamnus californica A. A. Heller 1915-1 11869 Butte Chico-Centerville road 3 miles from Chico Comment
  SEINET13946284 Image available Rhamnus californica A. A. Heller 1915-1 11881 Butte Canyon of Chico creek 5 miles east of Chico Comment
  CAS-BOT-BC59887  Rhamnus ilicifolia A. A. Heller; H. E. Brown 1902-5-10 5522 Butte Berry Canyon (near Clear Creek). Comment
  CHSC29815  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2259 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  UC1562321  Rhamnus purshiana Vernon Oswald and Lowell Ahart 1990-7-19 4364 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 3 mi e of of the Plumas County line) 1981 Comment
  RSA4444  Rhamnus rubra subsp. obtusissima E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  SEINET10493611  Rhamnus rubra subsp. obtusissima Mary Susan Taylor 1980-5-8 Taylor 2601 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC33791  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-7-10 4066 Butte North side of Feather River Hwy 70 at Pulga Bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  RSA518944  Rhamnus tomentella subsp. tomentella J. T. Howell 1959-9-20 34701 Butte Feather River Hwy 5.9 miles below W Branch bridge. Comment
  SD111937  Rhododendron occidentale Barbara Ertter, Peter Strachan, and Lowell Ahart 1980-5-8 3319 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Huncut between Marysville and Oroville. 49 Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  CHSC44063  Rhynchospora californica L. P. Janeway 1988-6-14 2761 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 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
  CHSC33908  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC51875  Robinia pseudoacacia L. P. Janeway 1987-4-20 2008 Butte North side of hwy 32 ca 9 mi NE of jct with hwy99; at Ten Mile House Trail Rd. 471 Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  RSA769677  Romulea rosea var. australis Lowell A. Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  JEPS124147  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC35750  Rorippa nasturtium-aquaticum R. E. Preston 1982-5-19 288 Butte In stream at edge of meadow; ca. 1/4 mi n of Fall River Campground. 1028 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, 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
  CHSC20548  Rosa californica M. S. Taylor 1975-7-4 833 Butte Ca. 500 yds e of Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  HSC97124  Rosa woodsii subsp. ultramontana L. Ahart 2005-7-13 12144 Butte 20 yds. S of intersection of Forbestown Rd. and Black bart Rd., 3.5 air mi. SW of Forbestown, 12 air mi. E of Oroville 749 Comment
  CHSC47447  Rotala ramosior Lowell Ahart 1975-7-19 899 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC76000  Rotala ramosior Lowell Ahart; Vernon H. Oswald 1999-8-13 8170 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA37504  Rotala ramosior L. Ahart 2000-8-28 8667 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC148349  Rubus laciniatus Lowell Ahart 1984-6-10 4696 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  SEINET10483595  Rubus parviflorus Mary Susan Taylor 1980-5-27 Taylor 2732 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CAS-BOT-BC158770  Rubus ursinus John Thomas Howell 1975-6-15 51077 Butte Butte Creek near Chico 60 Comment
  CHSC38148  Rubus ursinus J. D. Jokerst 1983-5-12 1760 Butte Table Mountain. Slope of the first creek canyon north of Cherokee Rd. where it intersects the east edge of the mesa. Comment
  CAS-BOT-BC363200  Rudbeckia occidentalis E. B. Copeland 1939-8-7 s.n. Butte Jonesville Comment
  CHSC54432  Rudbeckia occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4739 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. On the east side of the creek just upstream from the bridge. 1051 Comment
  CHSC116231  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 500 yards north of the County Road, about one mile west of the intersection of Lumpkin Riddge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CHSC38063  Rumex acetosella R. E. Preston 1982-6-23 308 B Butte In meadow at edge of stream; Deadwood Creek at Dixie Valley Road. 999 Comment
  JEPS120853  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  RSA754881  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET10904511  Rumex conglomeratus Mary Susan Taylor 1975-6-22 Taylor 788 Butte California State University, Chico, campus. 61 Comment
  CHSC90930  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC45385  Rumex dentatus subsp. klotzschianus Vernon Oswald 1985-5-8 1750 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Common in the bottom of a drying pond which was vernally wet. Comment
  UCD150347  Rumex persicarioides Harry A. George 1971-7-17 s.n. Butte Gray Lodge Wildlife Management Area, Field 14. 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
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  CHSC36956  Sagina apetala M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4365 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  UCSB64010  Sagina apetala Ahart, Lowell 1985-3-4 Butte At the Palermo Post Office, Palermo 36 Comment
  JEPS114955  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 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
  CHSC108820  Salix babylonica Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  SEINET10965409  Salix exigua Mary Susan Taylor 1982-5-22 Taylor 4498 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC42436  Salix exigua var. hindsiana Lowell Ahart 1987-5-6 5540 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC846523  Salix exigua var. hindsiana A. A. Heller 1915-5-16 11870 Butte 3 mi from Chico (Chico-Centerville rd.) Comment
  CAS-BOT-BC107830  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico on the banks of Dry Creek Comment
  CHSC109090  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte On the east side of the dam, east side of South Rim Trail, about 50 yards southwest of the table at the old homestead, about 100 yards south 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
  JEPS122277  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  CAS-BOT-BC106938  Salix laevigata M. S. Taylor; K. Tharp 1982-4-8 4295 Butte Turnout near Bridal Path sign, [across] across Feather River from spillway, along Oroville Dam Blvd, ca. 2.5 mi w of Oroville Dam Visitor Center 121 Comment
  UC478540  Salix lasiandra subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CHSC38671  Salix lasiolepis Vernon Oswald 1983-1-30 52 Butte Upper Bidwell Park, Chico, on the edge of Upper Park Rd. at Diversion Dam. 121 Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CAS-BOT-BC125060  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  CHSC42434  Salix lucida subsp. lasiandra Lowell Ahart 1987-4-20 5492 Butte Along North Honcut Creek, abour 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC221114  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC62751  Salvia sonomensis L. P. Janeway; Barbara Castro 1993-5-18 4348 Butte North side of Oroville-Quincy Hwy on north side of Lake Madrone. 603 Comment
  UC1124851  Salvia sonomensis H. A. Jensen 1934-10-26 390 Butte Cohasset Ridge (Keefer Ridge on map); Chico Quad. 548 Comment
  CAS-BOT-BC238617  Sambucus nigra subsp. caerulea Lowell Ahart 1968-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SBBG29841  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 Butte above Jonesville 2100 Comment
  CHSC36558  Samolus parviflorus L. Ahart 1982-8-22 3758 Butte Along edge of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 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
  SEINET10454565  Sanicula bipinnata Mary Susan Taylor 1975-4-26 Taylor 512 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
  UCD128003  Sanicula bipinnata M. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  UC566789  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3713 Butte ne of Oroville (Table Mountain, Cherokee Mine); Table Mountain, Cherokee Mine Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC99582  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9385 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  UC600515  Sanicula graveolens H. F. Copeland 1932-7-16 Butte a little W of the summit Jonesville Comment
  CHSC32622  Sanicula tuberosa M. S. Taylor; L. Hanson 1981-3-31 3455 Butte Serpentine ridge, n side of spur rd 1/4 mi w of its jct w Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 3 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 792 Comment
  CHSC42672  Sanicula tuberosa Vernon Oswald 1985-4-3 1696 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC99591  Sanicula tuberosa R. A. Schlising 2008-6-25 4469 Butte East of Jonesville, along road crossing to Humbug Summit Road, in small meadow 0.25 mi east of turnoff to Scotts John Creek. 1746 Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  CHSC96827  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  SEINET10449183  Sarcodes sanguinea Mary Susan Taylor 1981-5-29 Taylor 3818 Butte T23N R7E nw/nw sec 29, Bucks Lake quad. Along Buckhorn Creek on S side, about midslope, ca. 200 ft W of 23N18.5, ca. 1 mi SW of Grizzly Mt, ca. 13 air mi NE of Pulga. Dense, shaded, moist Yellow Pine Forest; 5200 ft. 1585 Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  POM277045  Schoenoplectus mucronatus M. K. Bellue 1947-8-28 s.n. Butte Afton Road, northeast of Biggs Comment
  UCD49962  Schoenoplectus mucronatus Carl Wick 1983-6-1 s.n. Butte CA. Butte Co. Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 Comment
  CAS-BOT-BC111831  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  SFV12648  Scirpus acutus var. occidentalis M. L. Vincent 1963-6-10 424 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC57149  Scirpus microcarpus L. P. Janeway 1988-6-14 2777 Butte Old creek bed along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road; at Ewalt Camp. 922 Comment
  CHSC65604  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. 1396 Comment
  JEPS124023  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte 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. 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
  CHSC65570  Scutellaria californica R. Banchero 1980-5-23 160 Butte Ca. 1.6 mi NW of jcn of Nelson Bar Rd and Lunt Rd, ca 0.4 mi from where Nelson Bar Rd meets Lake Oroville. 384 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
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill 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
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC458  Sedella pumila P. Delaplane 1965-3-16 2 Butte E. of US 99 ca. 14 mi. N. Chico. 30 Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  UCD102081  Sedum spathulifolium P. Thompson 1996-4-26 35 Butte Highway 70. Belden. Along the north entrance of the Pacific Crest Trail. 304 Comment
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Apr 5 2013
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC100795  Selaginella hansenii Lowell Ahart; John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 335 Comment
  CHSC42010  Selaginella hansenii Lowell Ahart 1974-7-29 690 Butte Along the dirt road 100 yards east of Rocky Honcut Creek, along Swedes Flat Road, north-east of Bangor. 304 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
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  HSC78629  Selaginella wallacei L. P. Janeway 1984-10-8 1180 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  SEINET10874645  Selaginella wallacei Mary Susan Taylor 1980-4-6 Taylor 2439 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  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
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  UC472365  Senecio aronicoides H. M. Hall 1912-5-26 Butte Stirling City Sierra Nevada Mountains Comment
  UC492747  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  NY233356  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CHSC113948  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte 10 yards east of the east edge of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  CAS-BOT-BC364550  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC3243  Sequoia sempervirens Virginia Hagaman 1966-2-21 24 Butte Chico State College Campus. Comment
  UC128826  Sericocarpus oregonensis subsp. californicus Miss Kate Conger 1907-1-1 151 Butte Brush Creek Comment
  JEPS98698  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC102819  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10902558  Sherardia arvensis Mary Susan Taylor 1980-4-6 Taylor 2462 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  UCD122004  Sherardia arvensis H. Clem Meith 1968-5-20 s.n. Butte Oroville. Comment
  UC426911  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville 2000 Comment
  CHSC34963  Sidalcea calycosa Eric D. Osman; R. Schlising 1978-4-22 16 Butte Ca 1.5 mi E of Chico, 0.2 mi S of Highway 32 and 100 feet N of Humboldt Rd. 80 Comment
  SEINET10480000  Sidalcea calycosa Mary Susan Taylor 1984-4-6 Taylor 5404 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
  CHSC90253  Sidalcea hartwegii Eric M. Haney 1989-4-21 8 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  SEINET11985721  Sidalcea hartwegii K. D. Johnson 1978-1 13 Butte E side of Cohasset Rd, 0.7 mi SE of Chico Municipal Airport control tower & 5 mi N of Chico 73 Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  UC763986  Sidalcea hirsuta R. F. Hoover 1937-5-19 2241 Butte 10 mi nw Chico; nw of Chico Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CAS-BOT-BC384467  Silene antirrhina Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi. se of Paradise. NE of Kunkle Res. 500 Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CDA31994  Silene gallica L. Ahart 2008-5-12 15690 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC32665  Silene lemmonii M. S. Taylor 1981-3-24 3436 Butte S side of Hwy 70, ca. 1/2 mi w of Cresta Powerhouse, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC35040  Silene lemmonii R. A. Schlising 1981-6-11 4069 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of its junction with Hwy 32 at Lomo. Comment
  CHSC50404  Sisymbrium altissimum Vernon Oswald 1990-6-10 4287 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). On the west edge of the pullout on Hwy 32. 1158 Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  JEPS115613  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 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
  POM107995  Sisyrinchium bellum C. C. Bruce 1897-05 2067 Butte Iron Canyon. Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 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
  JEPS119785  Smilax californica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18007 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC28529  Solanum americanum M. S. Taylor 1979-9-28 2195 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CDA41197  Solanum parishii L. Ahart 2006-5-19 12633 Butte 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. Comment
  CHSC45724  Solanum parishii J. Marr 1988-3-27 18 Butte 20 ft n side Concow Rd ca. 5 mi e of Hwy 70, 18 mi n of Oroville. 365 Comment
  HSC23325  Solanum parishii Carolyn Fante 1971-10-19 23 Butte E side Humbug Rd. 146 Comment
  POM181689  Solanum umbelliferum Williams 1927-4-11 s.n. Butte Near Chico Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  SEINET10474350  Solidago californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4148 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  CAS-BOT-BC365383  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC107121  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  JEPS18175  Soliva sessilis Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5607 Butte along Oroville-Concow road 2.8 mi below junction Yankee Hill Road 373 Comment
  JEPS124111  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10474015  Sonchus tenerrimus Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5150 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
  UC573852  Sorghum halepense H. S. Yates 1936-8-19 6124 Butte 10 mi. s. Durham; Chico Quad. Comment
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Nov 12 2007
  CHSC38522  Spartium junceum Vernon Oswald 1983-5-4 424 Butte Upper Bidwell Park, Chico, 100 ft w of the parking lot at Day Camp. 91 Comment
  CHSC103974  Spergularia bocconi Lowell Ahart 2010-5-7 16610 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
  CHSC37437  Spergularia bocconi R. A. Schlising 1982-5-18 4242 Butte Richvale Vernal Pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 Comment
  CHSC92509  Spergularia rubra Lowell Ahart 2005-12-11 12512 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
  CHSC6651  Spiraea M. MacArthur 1968-6-16 346 Butte In SE yard of Building T, Chico State College campus. 60 Comment
  SEINET10483625  Spiraea douglasii Mary Susan Taylor 1977-7-15 Taylor 1410 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CHSC85751  Stachys ajugoides var. ajugoides G. F. Hrusa; T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada--Plumas National Forest. Approx. 0.4 m. E of bridge over Marble Creek on USFS N60. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CHSC52205  Stachys ajugoides var. rigida L. P. Janeway 1988-7-2 2957 Butte Along road to Coyote Gap 2.6 mi from bridge on French Cr. 982 Comment
  UC2055630  Stachys pycnantha O. H. Kappler 1949-7-28 Butte North Fork, Feather River, Route 24. Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  RSA4123  Stachys rigida subsp. quercetorum E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  POM181718  Stachys rigida subsp. rivularis H. F. Copeland 1927-4-9 104 Butte Jonesville. Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  JEPS87171  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  CHSC52015  Stellaria longipes var. longipes L. P. Janeway 1988-6-25 2865 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from The Skyway. 1554 Comment
  CDA42900  Stellaria media L. Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC38305  Stellaria media Vernon Oswald 1982-12-3 19 Butte Bidwell Park, Chico, along edge of road leading to Police Pistol Range. 85 Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  SEINET10537521  Stellaria media Mary Susan Taylor 1975-3-25 Taylor 426 Butte Chico. Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC113602  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC43197  Stephanomeria lactucina Robert Banchero 1981-6-29 544 Butte 1.7 air mi w of Pulga. 926 Comment
  JEPS108756  Streptanthus Lowell Ahart 2006-7-16 12958 A Butte N side of Humboldt Road, abut 1 1/2 air mi SW of Butte Meadows 1435 Comment
  UCD164224  Streptanthus drepanoides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 301 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 303 Comment
  CHSC39048  Streptanthus longisiliquus Lowell Ahart 1983-6-30 4187 Butte About 3 mi SE of Stirling City, on dirt road on the west side of the West Branch of the Feather River; along the edge of the road. Section 10. 1100 Comment
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 Comment
  CHSC93454  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
  UC856691  Streptanthus polygaloides A. A. Heller 1938-5-28 15120 Butte steep slopes on Feather River Hwy 23 mi from Oroville Comment
  UCD164226  Streptanthus polygaloides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 303 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 314 Comment
  CAS-BOT-BC87435  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  UCD164181  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss, Patrick J. McIntyre 2011-4-10 IC-SS 188 Butte Table Mountain. 1092 Comment
  HSC96704  Streptanthus tortuosus var. orbiculatus L. P. Janeway, Matt Brown 2005-5-17 8391 Butte N High Sierra Nevada, Plumas National Forest, 0.3 km W of Cedar Creek, 2.6 km NNW of the mouth of Cedar Creek at N Fork Feather River 1295 Comment
  CAS-BOT-BC48062  Styrax redivivus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  SEINET10465014  Symphoricarpos Mary Susan Taylor 1974-3-19 Taylor 83 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET10465101  Symphoricarpos acutus Mary Susan Taylor 1978-7-18 Taylor 1696 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CAS-BOT-BC269532  Symphoricarpos albus var. laevigatus Clarence R. Quick 1952-6-30 52 -101 Butte Big Bar Mt., east of Pulga Comment
  CHSC27722  Symphyotrichum bracteolatum Robert A. Schlising 1978-10-10 3342 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest area. Comment
  UC29849  Symphyotrichum bracteolatum H. E. Brown Nov 15 1896-Nov 30 1896 80 Butte near Clear Creek 53 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  CAS-BOT-BC98090  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  JEPS124218  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20546 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  JEPS104006  Taeniatherum caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  CHSC38727  Tamarix gallica Vernon Oswald 1983-4-24 361 Butte Upper bidwell Park, Chico, on the north edge of Chico Creek 100 ft E of Parking Area H at Day Camp. 91 Comment
  CHSC4203  Taraxacum officinale J. Wheeler 1967-5-20 28 Butte In lawn at 248 Serviss St. Durham. Comment
  CHSC26830  Tauschia kelloggii M. S. Taylor 1978-5-6 1624 Butte On n side of Ponderosa Way, ca. 4 mi e of Cohasset. 609 Comment
  CHSC81446  Taxus brevifolia D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  UC401317  Taxus brevifolia R. M. A. 1896-5-1 755 Butte mountains n Chico Comment
  CHSC12405  Tellima grandiflora Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  CAS-BOT-BC445889  Tellima grandiflora A. A. Heller 1938-5-28 15127 Butte Along Highway #24, 2 miles east of Pulga, in the Arid Transition Life Zone. Comment
  CHSC44305  Tetrapteron graciliflorum Lowell Ahart 1988-3-25 5930 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, aout 12 miles south-east of Oroville. 76 Comment
  CHSC96633  Tetrapteron graciliflorum Lowell Ahart 2007-3-28 13589 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  CHSC52078  Teucrium fruticans B. Castro 1988-4-10 258 Butte At extreme e end of parking lot of Five Mile Recreation Area along s side of Big Chico Ck. 83 Comment
  CAS-BOT-BC392314  Thalictrum fendleri A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  CAS-BOT-BC392316  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville 1500 Comment
  CAS-BOT-BC197364  Thinopyrum intermedium subsp. barbulatum M. S. Taylor 1978-7-21 1835 Butte In Big Bald Rock parking lot 997 Comment
  CHSC35014  Thysanocarpus curvipes R. E. Preston 1982-3-20 189 Butte Feather River canyon, n side of Hwy 70, ca. 18 mi n of Oroville. 646 Comment
  CHSC43448  Thysanocarpus curvipes Lowell Ahart 1977-4-28 1321 Butte Along Fields Ridge Road, about 8 miles south-east of Feather Falls. 914 Comment
  CHSC90236  Thysanocarpus curvipes Jody Henderson 1989-3-22 2 Butte 200 yds n of Rock creek, Hwy 99 to Meridian Rd to Kilkare ln, 6 mi. n of Chico, 0.25 se of Kilkare ln. 72 Comment
  HSC23288  Thysanocarpus curvipes D. C. Polen 1971-4-8 27 Butte 10 mi. N of road, 0.6 mi. E on Skyway from its junction with Hwy. 99E Chico 70 Comment
  CHSC108804  Thysanocarpus curvipes var. elegans Lowell Ahart 2012-4-9 17840 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  RSA0057564  Thysanocarpus curvipes var. elegans James Payne Smith 1972-3-23 5094 Butte 1.6 miles from junction with U.S. 99 on the road to Paradise. Comment
  UC1562453  Thysanocarpus radians Lowell Ahart 1990-4-23 6463 Butte about 1/2 mi e of Larkin Road about 1 mi s Oroville Airport; s of the Oroville Airport 45 Comment
  UCD116037  Thysanocarpus radians L. Ahart 1975-3-26 719 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA0049962  Thysanocarpus radians A. A. Heller 1928-3-12 14481 Butte In a field near the Hooker Oak east of Chico. Comment