Search Results — 2000 specimen records retrieved (1636 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/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC94124  Abutilon theophrasti Lowell Ahart 2006-7-4 12912 Butte In an idle rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC84132  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the west side of an irrigation ditch, on the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. 67 Comment
  CHSC43581  Acer macrophyllum Vernon Oswald 1987-4-27 2345 Butte Paradise Lake between the picnic Area and Doon Creek. 777 Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 Comment
  JEPS119586  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. Comment
  CDA43099  Acer saccharinum L. P. Janeway 2013-2-25 11084 Butte Sacramento Valley.; North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. Comment
  CHSC46330  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  CHSC40464  Achnatherum lemmonii Lowell Ahart 1985-5-15 5004 Butte 1/8 miles north-east of Concow Res. 731 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  CHSC95045  Achnatherum stillmanii L. P. Janeway 2006-7-9 8807 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  SBBG17315  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC100491  Acmispon americanus var. americanus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15439 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC39980  Acmispon americanus var. americanus L. Ahart; P. Ahart 1983-7-24 4204 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 167 Comment
  CHSC45909  Acmispon americanus var. americanus Lowell Ahart 1981-8-11 3025 Butte Along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC39499  Acmispon brachycarpus Lowell Ahart 1983-5-28 4022 Butte Above the trail to the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC90517  Acmispon brachycarpus J. S. Peterich 1988-3-22 12 Butte Vic. Bear Hole in Bidwell Park ca. 2 mi. e. of golf course. 120 Comment
  UCD103753  Acmispon denticulatus A. A. Heller 1914-5-1 11342 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  JEPS124393  Acmispon nevadensis var. nevadensis Lowell Ahart 2015-6-16 20229 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
  CAS-BOT-BC391376  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC100925  Aconogonon phytolaccifolium R. A. Schlising; Pauleen Broyles 1986-8-5 4497 Butte Close to Plumas County line, at beginning of Scotts John Creek. 1889 Comment
  CHSC39124  Aconogonon phytolaccifolium R. A. Schlising 1983-7-24 4341 Butte E of Stirling City, at creek in Breakneck Canyon. 1417 Comment
  CHSC12122  Adiantum aleuticum K. O. Grigsby 1972-4-26 1 Butte 4 mi w of Nimshew on Centerville Rd. 15 mi e of Chico on s side of road. 304 Comment
  UC1499973  Adiantum capillus-veneris Lowell Ahart 1983-7-29 4236 Butte ca. 25 mi ne Oroville (ca. 1/2 mi e of Milsap Bar) 500 Comment
  SEINET10839582  Adiantum capillus-veneris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4236 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  CHSC39780  Adiantum jordanii R. O. Gilpatrick 1970-2-23 4 Butte Found 0.2 miles W. from paved road, lower dirt road 1 mile on Centennial Road from bridge, Chico. Comment
  JEPS116129  Adiantum jordanii Lowell Ahart 2009-5-23 15742 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  SFV82  Adiantum jordanii M. L. Vincent 1961-3-30 25 Butte Honeyrun Road, 0.5 miles west of Paradise. Near spring. 610 Comment
  CHSC91468  Aegilops triuncialis Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  HSC93184  Aegilops triuncialis L. Ahart 1995-5-30 7581 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CHSC8619  Aesculus californica L. V. Ritter 1969-5-5 303 Butte Ca 2 mi. w of Cohasset, ca 10 yds s of Cohasset Highway. Comment
  SEINET12236158  Aesculus californica Unknown 1978-1 18 Butte Cherokee quadrangle, Upper Miocene Canal 448 Comment
  UCD136670  Aesculus californica L. E. Delight 1973-1-5 24 Butte ca. 160 yards east from Centennial Ave., ca. 1 mile east of intersection of Manzanita Ave. and Centennial Ave., Chico. Comment
  SEINET10494492  Aesculus californica Lowell Ahart 1985-6-17 Ahart 5045 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET10494576  Aesculus californica Melvin L. Conrad 1973-6-5 Conrad 7037 Butte Jarbo pass on hwy 70. Yellow pine, calif. Buckeye & shrubby lupine. Comment
  RSA409472  Agastache urticifolia M. B. Dunkle 1945-8-7 9337 Butte Paradise Lake, Klamath Nat l. Forest, Marble Mts. (San Joaquin Co.?) Comment
  SEINET10572507  Agoseris Mary Susan Taylor 1980-4-18 Taylor 2508 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC22966  Agoseris heterophylla A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) 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
  SEINET10968368  Agropyron Mary Susan Taylor 1978-7-18 Taylor 1675 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  JEPS104036  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  JEPS116027  Agrostis gigantea Lowell Ahart 2009-7-9 16006 Butte On the east side of a 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
  SEINET10507089  Agrostis gigantea Lowell Ahart 1985-11-7 Ahart 5235 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SACT000132  Agrostis hyemalis Herbert Copeland 1935-7-25 Butte 1500.0 Comment
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  SEINET4341130  Agrostis microphylla J. Nachlinger 1984-4-8 915 Butte Table Mountain, 4 miles north of Oroville 366 Comment
  CHSC50809  Agrostis pallens Vernon Oswald; Lowell Ahart 1990-7-31 4418 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  UCD53338  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS110402  Agrostis variabilis Lowell Ahart 2006-8-15 13173 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  UC600598  Agrostis variabilis H. F. Copeland 1932-8-17 Butte at the Summit (Jonesville); Jonesville 2000 Comment
  CHSC96863  Agrostis viridis Lowell Ahart 2007-6-3 13977 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CHSC2117  Aira caryophyllea H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E of Chico. 152 Comment
  CHSC42838  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 south-east of Jarbo Gap. 271 Comment
  HSC41092  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-4-14 6046 Butte Bruce Ln. between Humboldt Rd. and Skyway Rd., E of Chico Comment
  SEINET10465408  Alisma triviale Mary Susan Taylor 1978-7-22 Taylor 1850 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  UCD137971  Alisma triviale E. M. Johnston 1915-1 W 144 J Butte Biggs Comment
  CHSC90579  Allium amplectens Jose Romero 1983-4-20 1 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  SEINET8466775 Image available Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy #70, 4.4 miles south of the Oroville Dam Exit (Hwy. #126) Comment
  CAS-BOT-BC460743  Allium amplectens Robert A. Schlising; Marc Hayes 1978-5-22 3266 Butte N of Chico along Cohasset Hwy, 4.3 mi N of Mud Creek. Comment
  CHSC49473  Allium campanulatum Vernon Oswald 1983-6-22 746 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  SEINET12048121  Allium campanulatum M. Ownbey, Ownbey, G. B. 1946-1 2940 Butte below Jonesville Comment
  CHSC92935  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  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
  CHSC87430  Allium neapolitanum R. D. Fischer 2004-3-22 93 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  CHSC101188  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2009-4-18 9730 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 758 Comment
  CHSC44518  Allium obtusum var. obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CAS-BOT-BC132075  Allium peninsulare var. peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, near Bangor Comment
  CAS-BOT-BC132078  Allium peninsulare var. peninsulare Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut, along North Honcut Creek 50 Comment
  CHSC42482  Allium platycaule Lowell Ahart 1987-5-22 5675 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC31426  Allium sanbornii var. sanbornii L. Ahart 1980-7-29 2501 Butte Near the edge of Forbestown Rd, ca. 1 mi e of Hurleton. 700 Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CDA40009  Allophyllum integrifolium T. C. Fuller 1962-7-12 9186 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC113284  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 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
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  SEINET9367935  Alopecurus carolinianus Unknown 1986-4-2 Butte Butte Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  CHSC54374  Alopecurus saccatus M. Bailey 1991-3-29 555 Butte Butte College campus. Ca 200 feet s of Wallis Pond e of Williams Road and ca 1/4 mi n of Pentz Road. 85 Comment
  SEINET215171  Alopecurus saccatus W. J. Barry 1968-4-13 79 Butte Table Mtn Comment
  SEINET10511200  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca. 2 mi ne of Honcut. Valley Grassland. 50 Comment
  JEPS120591  Amaranthus albus Lowell Ahart 2013-11-18 19280 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC102397  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 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
  CHSC76409  Amaranthus retroflexus Lowell Ahart 1999-10-28 8314 Butte On west side of a large pond, large disurbed 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
  CHSC26622  Ambrosia psilostachya M. P. Hayes 1977-9-24 120 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). 30 Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC19540  Ammannia coccinea F. T. Griggs 1974-8-8 143 Butte Growing in the Sacramento River between the Hamilton City bridge and the mouth of Big Chico Creek. Comment
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  CHSC47437  Ammannia coccinea Lowell Ahart 1974-11-9 676 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28620  Ammannia robusta M. S. Taylor. 1979-10-2 2213 Butte In sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET12290588  Amsinckia intermedia K. D. Johnson 1978-1 5 Butte edge of pasture on S side of Cohasset Road, 3.2 mi N of Chico 59 Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 Comment
  SEINET12326971  Amsinckia intermedia J. S. Adams 1980-1 5 Butte Horseshoe Lake, opposite Golf Course, Upper Bidwell Park, Chico 98 Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  UC726358  Amsinckia lycopsoides A. A. Heller 1941-3-16 15889 Butte along road 1/2 mi w Pentz Comment
  CHSC37418  Amsinckia menziesii Nancy A. Stevens 1971-4-23 19 Butte Found ca 30 ft. s of Highway 32 and ca 2.5 mi w of Forest Ranch 701 Comment
  NY622098  Amsinckia nitidicaulis A. A. Heller 1918-4-10 12982 Butte At Chico; especially plentiful as a weed about the high school Comment
  CAS-BOT-BC137800  Andropogon virginicus var. virginicus John Thomas Howell 1959-9-20 34669 Butte Sierra Nevada. Eastern outskirst of Oroville. Lower foothills. 60 Comment
  JEPS83781  Anemone occidentalis V. Oswald and L. Ahart 1988-7-29 3644 Butte ca. 5 mi. (air) s.w. Jonesville (on ridge running e. from peak of Snow Mt., n. brow of ridge) 2103 Comment
  UCR231509  Angelica Anna M. Hurlbutt 2009-8-7 026 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC79636  Angelica breweri G. F. Hrusa; T. D. Wilfred 1996-7-9 13184 Butte On 22N89 approx. 0.3 m. from intersection of Hwy 162. Plumas National Forest. [Lat./Long. on label is '39 45 N; 121 18 W']. 1200 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  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
  SEINET10547632  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-10-5 Taylor 2230 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  POM75790  Apocynum cannabinum C. C. Bruce 1897-06 s.n. Butte Little Chico Comment
  SEINET10873858  Apocynum pumilum Mary Susan Taylor 1975-6-30 Taylor 812 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC392114  Aquilegia formosa Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  CHSC1433  Aquilegia formosa var. truncata R. Carter 1964-6-15 128 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff where Bear Ranch Rd. le ves Hwy. 40A. 609 Comment
  CHSC52680  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 302 Butte E part of county, ca. 1.0 mi NE of Mountain House. 1024 Comment
  POM149785  Aquilegia formosa var. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] Comment
  CHSC50022  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte Borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  UC600706  Arabis glabra E. B. Copeland 1931-6-22 Butte Jonesville 1500 Comment
  CAS-BOT-BC167246  Aralia californica Clarence R. Quick 1952-7-1 52 -116 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC109  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC40357  Aralia californica Lowell Ahart 1985-9-7 5106 Butte Bottom and sides of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles south-west of Forbestown. 548 Comment
  CHSC583  Arbutus menziesii V. Keeler 1935-4-28 Butte Magalia. 731 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CAS-BOT-BC24438  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1682 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  RSA632992  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27458 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52120  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51096 Butte In Upper Sonoran Zone on volanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11989223  Arctostaphylos manzanita J. T. Howell 1975-1 51105 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC24411  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Huboldt Grade, about 12 mi. from Chico. Comment
  CAS-BOT-BC24412  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight 1968-3-7 2279 Butte 1/4 mi. down Pentz Rd. from hwy 70. Comment
  UC1303076  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte e Chico; Ten Mile House Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  SBBG128407  Arctostaphylos manzanita subsp. manzanita L. Ahart, J. Dittes, S. Green 2009-1-17 15468 Butte N side of Humboldt Trail, ca. 50 yards S of Guardian Rock Trail, upper Bidwell Park, ca. 300 yards W of Hwy 32 330 Comment
  UC726639  Arctostaphylos mewukka A. A. Heller 1942-1-29 16359 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  CHSC108842  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC44639  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2146 Butte First ridgeline east of and paralleling Camp Cr. in the canyon of the North Fork Feather River. Comment
  CAS-BOT-BC45569  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SBBG28835  Arctostaphylos nevadensis subsp. nevadensis E. B. Copeland 1930-7-6 Butte above Jonesville 2050 Comment
  CAS-BOT-BC46719  Arctostaphylos patula John Thomas Howell 1978-4-18 52848 Butte Magalia. 731 Comment
  NY8239  Arctostaphylos patula A. A. Heller 1928-2-27 14477 Butte About 2 mi below Forest Ranch in red clay at the lower limit of the transition life zone. Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. Comment
  SEINET11989215  Arctostaphylos truei J. T. Howell 1975-1 51083 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET11995502  Arctostaphylos truei W. Knight, Knight, I.; Knight, T. 1988-1 6303 Butte Paradise at Berkshire Way & Bille Road just off The Skyway 274 Comment
  CAS-BOT-BC44589  Arctostaphylos viscida subsp. mariposa Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 35 Butte 2 mi. N of Paradise off Skyway Blvd., 0.2 mi. N on Coutolene Rd. 701 Comment
  CHSC88618  Arctostaphylos viscida subsp. viscida Linnea Hanson 1985-6-21 275 Butte Plumas National Forest. At Jarbo Gap on Hwy. 70. 731 Comment
  JEPS38758  Arctostaphylos viscida subsp. viscida unknown 1914-2-22 Butte Oroville Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CDA31421  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC108045  Aristida oligantha L. P. Janeway 2011-10-12 10772 Butte Cascade Range Foothills/Sacramento Valley. Upper Bidwell Park, Chico; 1.0 km southwest of Horseshe Lake, along Upper Park Road at the road to Five Mile Recreation Area, north side of Big Chico Creek. 91 Comment
  CHSC117314  Aristida oligantha L. P. Janeway 2016-8-9 12148 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  SEINET11665616  Aristida oligantha Unknown 1977-1 1464 Butte Peter Ahart Ranch, Honcut, Valley grassland 50 Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  UC492750  Arnica mollis H. F. Copeland 1927-9-4 1122 Butte Jonesville 1524 Comment
  CHSC28531  Artemisia douglasiana M. S. Taylor 1979-9-28 2198 Butte At Butte County line at Hwy 70, between boundry and Arch Rock Tunnel. 487 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
  CHSC99489  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte North side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 483 Comment
  UCR219096  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 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
  SEINET10872091  Artemisia douglasiana Mary Susan Taylor 1975-10-29 Taylor 976 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CAS-BOT-BC93885  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA126008  Asarum hartwegii E. K. Balls 1957-5-22 22514 Butte N Fork Feather River, above Camp Rogers, on trail to Buck s Lake 640 Comment
  RSA795241  Asclepias fascicularis L. Ahart 2011-8-17 17629 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 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 240 Comment
  POM180847  Asclepias fascicularis H. F. Copeland 1923-7-9 s.n. Butte Mud Creek Ranch Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  SEINET10529847 Image available Aspidotis carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1926 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  SEINET10872024  Aster chilensis var. medius Lowell Ahart 1985-10-12 Ahart 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  SEINET10474436  Aster oregonensis subsp. californicus Lowell Ahart 1985-8-15 Ahart 5165 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  CHSC42893  Asyneuma prenanthoides L. P. Janeway 1987-6-13 2192 Butte Along Ponderosa Way (Rim Rd) 2.8 mi NE of Jarbo Gap. 883 Comment
  CHSC101083  Athysanus pusillus Lowell Ahart; John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  SEINET10907254  Athysanus pusillus Mary Susan Taylor 1975-3-3 Taylor 398 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CAS-BOT-BC311784  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC34048  Atriplex triangularis L. Ahart 1981-7-26 3005 Butte On the sides of a large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC6659  Avena barbata Marilyn Lee 1968-3-15 121 Butte East side of Cohasset Road, 100 yards north of North entrance to Chico Airport, 6 miles north of C. S. C. Comment
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  UC1562395  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte ca. 4 1/2 mi sw of Oroville (ca. 1/4 mi s of Feather River, ca. 4/10 mi w of Pacific Heights Rd.) 30 Comment
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  CHSC59166  Azolla microphylla Vernon H. Oswald 1992-9-21 5218 Butte SE corner of Llano Seco, in a ditch crossing Seven Mile Lane ca. 0.25 mi N of Nelson West Rd. 30 Comment
  CHSC84645  Baccharis salicifolia Matt Quinn 2001-4-24 58 Butte Found on gravel bar along Big Chico Creek, at Day Camp beach, in Upper Bidwell Park. 94 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC37134  Bacopa rotundifolia L. Ahart 1982-6-27 3652 Butte Peter Ahart Ranch, ca 2 1/4 mi n and 1/4 mi e of Honcut. 50 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  CHSC42510  Barbarea verna Lowell Ahart 1987-5-6 5565 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
  CHSC107120  Bellis perennis L. P. Janeway 2011-6-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. 60 Comment
  CHSC21365  Berberis aquifolium M. S. Taylor 1975-4-8 454 Butte N side of Chemistry Bldg, California State University, Chico. 60 Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  UCD95091  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte One half mile west of Harrison and Stern Roads in town of Paradise. 609 Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC83278  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 27 Comment
  HSC96972  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  JEPS113581  Bergia texana Lowell Ahart, Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville Comment
  CAS-BOT-BC102070  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CHSC31576  Bidens frondosa Lowell Ahart 1976-6-27 1145 Butte Along the edge of North Honcut Creek, near Honcut. 45 Comment
  CHSC72247  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  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
  UC1192175  Bidens frondosa Herbert L. Mason and Verne Grant 1946-9-4 13108 Butte 833 Canal, West Gridley Road, Butte Sink Butte Sink, 833 Canal, West Gridley Road Comment
  CHSC7141  Blennosperma nanum Bryan C. Willingham 1969-3-13 2 Butte Ca. 3 mi SE of Chico. S of Skyway and ca 1 mi NW of Butte Creek. 91 Comment
  CHSC90044  Blennosperma nanum Richard R. Snow 1991-3-25 8 Butte 50 yds n of Renkow Rd., .5 mi e of Meridian Rd. ca. 12.8 mi n of Chico. 70 Comment
  CHSC10614  Boechera breweri subsp. shastaensis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  RSA166345  Boisduvalia glabella D. M. Moore 1960-6-2 99 Butte U.S. 99E 1.2 mi. S of Butte - Tehama county line Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CHSC55296  Bolboschoenus glaucus Lowell Ahart 1991-9-14 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC31372  Bolboschoenus maritimus James D. Jokerst 1982-4-29 1544 a Butte Grey Lodge Waterfoul Management Area adjacent to kirt road that is N of Rutherford Rd. Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  JEPS115834  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles 60 Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CDA10540  Brickellia californica D. G. Kelch 2006-8-2 6 .348 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  CAS-BOT-BC482212  Brodiaea californica subsp. californica C. C., Mrs. Bruce 1893-5-1 2126 Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CHSC90224  Brodiaea elegans subsp. elegans Robert Kissane 1989-5-12 2 Butte East side of Bruce Road, ca. 500 m s of Humboldt Road, Chico. 80 Comment
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Jun 17 2014
  CDA39462  Brodiaea minor L. P. Janeway 2000-5-14 6721 Butte Sacramento Valley; East side of Pine Creek Road 0.3 mile north of Pine Creek Comment
  CAS-BOT-BC484375  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC112887  Brodiaea nana Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  UC1133981  Brodiaea nana F. W. Embree 1934-4-26 45 Butte 2 1/2 mi ne Honcut; Marysville Quad. Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 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
  CHSC70820  Brodiaea sierrae B. Castro; H. Durio, L. Gehrung 1995-7-25 593 Butte Ca. 2.5 air mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84. 944 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CHSC2128  Bromus catharticus H. Silberman; D. Isaac 1949-5-9 Butte W. side football field, CSU campus. Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  CAS-BOT-BC156073  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1.5 mile east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CDA29903  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC26444  Bromus diandrus P. Moyer 1972-4-9 165 Butte CSUC Campus. North bank of Chico Ck., w of Warner St. Bridge. 60 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  CHSC36546  Bromus hordeaceus L. Ahart 1982-6-4 3549 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS117608  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 238 Comment
  CHSC88196  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1507 Comment
  CHSC93794  Bromus laevipes Lowell Ahart 2006-5-19 12631 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
  CAS-BOT-BC162364  Bromus madritensis John Thomas Howell 1961-9-22 36782 Butte Sierra Nevada. Jarbo Gap, Feather River Highway. Comment
  CHSC2152  Bromus madritensis subsp. rubens M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC31707  Bromus madritensis subsp. rubens L. Ahart 1970-4-20 44 Butte On creek bank. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10507668  Bromus mollis Mary Susan Taylor 1980-5-27 Taylor 2643 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC49519  Bromus polyanthus Vernon Oswald 1988-6-2 3351 Butte Humboldt Rd. 0.7 mi ne of Lomo. Along this section of road. 1249 Comment
  CAS-BOT-BC161960  Bromus rubens A. A. Heller 1914-4-11 11279 Butte Hills 8 miles north of Oroville. Comment
  JEPS115954  Bromus sterilis Lowell Ahart 2009-4-26 15614 Butte East edge of a small meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  CHSC49523  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1987-8-5 3183 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 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
  CHSC60865  Bromus vulgaris Vernon H. Oswald; Lowell Ahart 1993-6-22 5562 Butte Long Ravine W of Stirling City, along the road in the ravine just N of the Diversion Dam for Hendricks Canal. 960 Comment
  POM196128  Bromus vulgaris H. F. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  RSA794453  Bulbostylis capillaris P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25708 Butte 0.5 air miles northeast of Little Bald Rock, northeast of and below Bean Creek Road 0.6 road miles from Bald Rock Road. Northern Sierra Nevada Highlands. 1005 Comment
  CHSC3584  Buxus sempervirens Susan Carrauthers 1966-2-26 20 Butte City of Chico. E. 5th and Olive Streets. Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  HSC32687  Calandrinia ciliata David Johnson 1974-4-20 50 Butte Table Mtn. Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  CHSC12181  Callitriche heterophylla var. bolanderi Lowell Ahart 1973-3-26 186 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38281  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-3-9 146 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, 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
  JEPS113280  Callitriche heterophylla var. bolanderi Lowell Ahart 2007-4-16 13672 Butte In shallow water of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  CHSC47394  Callitriche trochlearis Lowell Ahart 1974-4-7 347 Butte In 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. 36 Comment
  CHSC103161  Calocedrus decurrens Lowell Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC76965  Calochortus albus Margie Collins 1894-4-1 Butte Forbestown. Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  HSC38106  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2449 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC24782  Calochortus monophyllus D. E. Hale 1976-4-10 15 Butte On n side of Vilas Rd, ca. 25 m e of Vilas Rd - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  UCR190818  Calochortus monophyllus 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
  POM219307  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CDA14083  Calochortus superbus G. F. Hrusa, T. D. Wilfred 1997-7-3 13967 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from E. Comment
  CHSC76967  Calochortus tolmiei Margie Collins 1894-4-1 Butte Forbestown. Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  SEINET12047250  Calochortus tolmiei D. M. Reilly 1980-1 15 Butte ca 0.25 mi SW off Big Bend Rd, ca 2 mi off Hwy 70, ca 25 mi E of Chico 610 Comment
  UC436309  Caltha biflora E. B. Copeland June, 1930 Butte Jonesville; Willow Creek Meadow 1550 Comment
  CAS-BOT-BC175755  Caltha leptosepala H. F. Copeland 1929-6-10 1239 Butte Jonesville 1524 Comment
  CHSC105802  Caltha leptosepala Lowell Ahart 2010-9-28 17266 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  UC1563273  Calycadenia fremontii Lowell Ahart and Mary Sue Taylor 1990-8-28 6585 Butte 3 mi e, s side of Hwy 32 Chico 182 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC44061  Calycadenia oppositifolia L. P. Janeway 1988-5-29 2701 Butte Low in cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 243 Comment
  UC727113  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte e of, Jarboo Pass on the Feather River Highway Oroville 609 Comment
  UC88992  Calycadenia oppositifolia Mrs. R. M. Austin May 1883 Butte Comment
  CHSC39266  Calycadenia truncata Lowell Ahart 1983-6-30 4182 Butte Along the dirt road, about 1 1/2 miles northeast of Concow Res. 550 Comment
  CHSC92937  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  RSA712645  Calycadenia truncata subsp. truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; on Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Bachelor Point. 927 Comment
  CHSC99663  Calycanthus occidentalis H. Koeth 2007-4-12 Butte Chico State Campus, South of Holt Hall (below walking bridge). 57 Comment
  UC725412  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  POM97735  Calycanthus occidentalis Edward Palmer 1892-6-7 2068 Butte Near Chico. Comment
  CAS-BOT-BC223608  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; beside Skyway 650 Comment
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  CHSC52018  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1987-7-5 2442 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  SEINET10496585  Calystegia occidentalis Mary Susan Taylor 1980-5-15 Taylor 2639 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
  UC600772  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville Comment
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  CHSC116496  Camassia quamash subsp. breviflora Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20195 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  CHSC95183  Camassia quamash subsp. quamash R. D. Fischer 2005-6-5 827 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  RSA718787  Campanula prenanthoides L. P. Janeway 2006-6-25 8703 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC600503  Campanula prenanthoides H. F. Copeland 1924-8-11 599 Butte Jonesville Comment
  UC1609041  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte sides of small stream s Fall River (1/8 mi s of campgrounds on the large gravel bar along Fall River, about 6 air mi ne of Feather Falls) 1036 Comment
  CHSC90194  Capsella bursa-pastoris Robert Kissane 1989-4-23 20 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC50317  Cardamine breweri var. breweri Vernon Oswald; Lowell Ahart 1990-5-29 4263 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  UC1609149  Cardamine nuttallii Vernon H. Oswald and Lowell Ahart 1993-4-21 5293 Butte Path along Butte Creek Canal ca 1.0 mi n of its jct with Hendricks Canal (n of De Sabla); along Butte Creek Canal, n of De Sabla 853 Comment
  CAS-BOT-BC37883  Cardamine oligosperma Lowell Ahart 1980-5-4 2167 Butte Thermalito. 65 Comment
  CHSC101089  Cardamine oligosperma Lowell Ahart; John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC4152  Cardamine oligosperma R. Carter 1966-4-2 322 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC90636  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 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
  JEPS122189  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UC855791  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek 68 Comment
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  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 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
  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
  JEPS117517  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico 71 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC55426  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1852 Butte Along Humbug Summit Road at Cold Springs, just below Humbug Summit. 1965 Comment
  CAS-BOT-BC17812  Carex amplifolia Lowell Ahart 1983-9-17 4439 Butte About 0.25 mile southeast of Stirling City. 1100 Comment
  CHSC40269  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte At a small stream east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC17811  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte East of the dirt road to the Forbestown Reservation, about 2.5 miles northeast of Forbestown. 868 Comment
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  CHSC113418  Carex angustata Lowell Ahart 2014-7-13 19641 Butte Dry west edge of a large wet meadow (some bog), about 80 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC59005  Carex angustata Lowell Ahart 1992-7-21 6807 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  SEINET10955616  Carex athrostachya Edwin B. Copel 1929-7-28 Copeland 607 a Butte Jonesville. 1550 Comment
  SEINET3128047  Carex barbarae L. S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CHSC110471  Carex bolanderi L. P. Janeway 2013-5-9 11108 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +-overlooking Cresta, along Camp Creek Road 2.7 road km northeast of Dixie Road. 670 Comment
  CHSC48547  Carex bolanderi Vernon Oswald 1983-6-17 704 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 100 ft w of Day Camp. 91 Comment
  UCD140164  Carex bolanderi L. P. Janeway; B. Castro, Pat Kelly 1987-5-10 2032 Butte Butte Creek Trail, above Butte Creek ca. 1 mile south of the Doe Mill Road bridge. 609 Comment
  CHSC48545  Carex brainerdii L. P. Janeway 1988-6-14 2780 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 952 Comment
  CAS-BOT-BC19601  Carex brainerdii L. P. Janeway 1988-6-14 2789 Butte East side of canyon of Cedar Creek 4.3 miles east of Lomo along the Cedar Loop. 1280 Comment
  CAS-BOT-BC19602  Carex brainerdii L. P. Janeway 1988-6-19 2842 Butte 3.3 miles north of Inskip. 1554 Comment
  CHSC47135  Carex cyrtostachya L. P. Janeway 1988-7-2 2955 Butte Near the marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. Near the creeklet draining the marsh/mdw. 952 Comment
  CHSC82908  Carex cyrtostachya L. P. Janeway; B. Castro 2002-7-28 7689 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  CHSC52854  Carex densa L. P. Janeway 1988-5-30 2716 Butte Canyon of Big Chico Creek; upper Bidwell Park, 3.8 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  CHSC99747  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
  CHSC111380  Carex divulsa subsp. divulsa Lowell Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 63 Comment
  JEPS120129  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CAS-BOT-BC19847  Carex echinata E. B. Copeland 1929-7-5 s.n. Butte Jonesville. 1500 Comment
  CHSC28866  Carex feta J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 431 Butte Along edges of first drainage northwest of jct east edge of Table Mt and Cherokee Rd. Comment
  CHSC43902  Carex feta L. P. Janeway 1987-6-5 2132 Butte Along French Cr Rd 1.4 mi NE of OroQuincy Hwy and Stanwood Saddle. 929 Comment
  CHSC45709  Carex feta L. P. Janeway 1987-5-10 2046 Butte Mdw at jct of The Skyway and Doe Mill/Humbug Rd (just N of DeSable Res.). 838 Comment
  SEINET12649386 Image available Carex flacca L. P. Janeway 2009-1 9796 Butte 59 Comment
  CAS-BOT-BC21241  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  SEINET7485219 Image available Carex fracta Peter F. Zika 2009-1 24616 Butte above Humboldt Road, c. 1 air km S of Humboldt Summit 1900 Comment
  CHSC101144  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte 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
  CHSC85918  Carex gracilior L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oro-ville; 2.1 km east of the Bidwell Bar Bridge; next to Craig Saddle Boat-in Campground. 290 Comment
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC42814  Carex hirtissima L. P. Janeway 1987-6-13 2214 Butte Mdw just NE of Jct of Concow Cr and the rd to Flea Mtn. 1188 Comment
  CHSC52915  Carex integra L. P. Janeway 1988-6-25 2861 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CHSC59007  Carex integra Lowell Ahart 1992-7-21 6813 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC7557  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3044 Butte Just below saddle between Coon Hollow and Chips Creek. West facing rocky outcrop near dry minor drainage. 1889 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  UC600694  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville 1524 Comment
  CAS-BOT-BC7779  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Southeast of Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  HSC87069  Carex lemmonii L. P. Janeway 1987-6-27 2344 Butte Just E of Keyser Creek, 4.3 mi. N of Ramsey Bar along Concow Rd. 1479 Comment
  CHSC109663  Carex leptopoda Lowell Ahart; L. Hanson, S. Bazell, J. Guardino, W. Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA0058976  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS105678  Carex luzulina var. ablata L. P. Janeway 2002-5-26 7561 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC105834  Carex mariposana Lowell Ahart 2010-7-27 16928 Butte High bank on the west side of the South Fork of the Feather River, east of Forest Road 22N68, about 1/4 mile southwest of the Feather Fork Mine, about 1-1/2 miles (air) northeast of Little Grass Valley Reservoir 1565 Comment
  CHSC101767  Carex multicaulis Lowell Ahart 2009-5-15 15709 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
  UCD140656  Carex multicaulis L. P. Janeway 1987-6-27 2368 Butte 2.0 mile west of Bald Mountain alng road to Stirling City. 1493 Comment
  CAS-BOT-BC21235  Carex multicostata V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mountain Region located 6 air miles SE of Jonesville. North brow of a ridge running eastward from Snow Mountain. 2072 Comment
  CHSC43869  Carex nebrascensis Vernon Oswald 1983-6-22 751 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  CHSC109166  Carex nudata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18010 Butte On the north side 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
  CHSC49386  Carex pachystachya L. P. Janeway 1988-6-14 2769 Butte Along W Branch Butte Cr at crossing of road to Ewalt Camp, 1.9 mi W from Hwy 32. 922 Comment
  CHSC92350  Carex pachystachya Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10514 Butte Ca. 3.5 mi SE of village of Butte Meadows, along Humbug Summit Road, upslope from Cornelia Lott Sank Memorial Spring. (WGS 84) 1517 Comment
  CHSC43964  Carex pellita Vernon Oswald 1988-5-27 3344 Butte Rancho Aguas Frias. Nelson-West Rd. 2.1 mi w of Aguas Frias Rd. (Goodspeed-Watt Rd.). 30 Comment
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  CHSC102840  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC47137  Carex praegracilis L. P. Janeway; Vern H. Oswald 1989-4-17 3221 Butte Along E side of Butte Cr 2.4 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  UC1537179  Carex praegracilis Gordon H. True Jr. 1936-3-26 378 Butte Wild Goose Country Club Butte Creek 15 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC47052  Carex retroflexa var. texensis L. P. Janeway 1989-6-1 3270 Butte Campus of California State University, Chico; semi-natural area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  SEINET10709381  Carex rossii Lawrence P. Janeway 1988-7-30 Janeway 3137 Butte T25N, R5E, Jonesville quad (15') NW 1/4 of sec. The ridge SE from Snow Mtn. N edge of ridgetop red fir forest and pine-mat manzanita chaparral. 2103 Comment
  CHSC94300  Carex simulata Lowell Ahart 2006-6-16 13011 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
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  CHSC44169  Carex straminiformis V. Oswald; L. Ahart 1988-7-29 3647 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC116747  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest. Along Feather River N of Stirling City. 1036 Comment
  CHSC36884  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1656 Butte Coon Hollow just north of Coon Hollow Creek on road 26N74. 1706 Comment
  CHSC52874  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3082 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  CAS-BOT-BC116743  Carex subfusca L. P. Janeway 1988-6-14 2772 Butte Ewalt Camp, along W branch Butte Cr. 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  CAS-BOT-BC115684  Carex texensis L. P. Janeway 1989-6-1 3270 Butte Campus of CA State Univ, Chico. Semi-natural area on N side of Big Chico Cr, 57 Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  SEINET10894839  Carex vernacula Lowell Ahart 2010-9-28 Ahart 17264 Butte T25N, R5E, northeast 1/4 Section 29. On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC25333  Carex vesicaria M. P. Hayes; Warner 1977-8-14 40 Butte Marshy meadow along Butte Creek, 10 mi n of turn to Butte Meadows along Highway 32. 1280 Comment
  CHSC50379  Carex vulpinoidea Vernon Oswald; Lowell Ahart 1990-5-26 4254 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. 32 Comment
  CAS-BOT-BC114828  Carex whitneyi L. P. Janeway; Robert A. Schlising 1988-7-16 3022 Butte Near Willow Cr ca. 1 mi W of Humbug Rd. 1798 Comment
  CAS-BOT-BC248998  Castilleja Mrs. H. C. Cantelow 1941-5-25 s.n. Butte 2 miles west of Arch Rock, Feather River Canyon, on State highway 24 Comment
  JEPS8408  Castilleja W. L. Jepson 1891-4-20 21474 Butte South Peak; Marysville Butte Region Comment
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC44707  Castilleja affinis R. Banchero 1980-3-23 78 Butte Along Crown Point Rd, 0.7 mi from its jct with Hwy 32. 539 Comment
  JEPS57366  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1925 Butte about 4 air mi nw Bangor (along Oroville-Bangor road) 182 Comment
  CHSC43191  Castilleja applegatei subsp. pinetorum Richard J. Slama 1981-4-20 8 Butte On s rim of canyon. Ca. 7 mi se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  SBBG28929  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 Butte Jonesville 1750 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  SEINET10549336  Castilleja applegatei var. fragilis Mary Susan Taylor 1980-5-27 Taylor 2729 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC27850  Castilleja attenuata Ethel Pearson 1978-4-18 11 Butte Ca. 12 mi n of Chico on State Hwy. 99 at Broyles Rd. 67 Comment
  CHSC90166  Castilleja attenuata John Copeland 1980-3-7 15 Butte About 1.5 mi north on Meridian Road from Hwy 99, 1.0 mi east of dirt road, 1 ft north and south side of road. Comment
  JEPS103418  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte In a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC1830  Castilleja exserta P. Delaplane 1965-4-6 26 Butte Along side of Cohasset Rd. 3/4 mi. above Richardson Springs Rd. turnoff. 182 Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  CHSC91456  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 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
  CHSC114951  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte Road cut on the east side of Oroville Quincy Highway (162), about one mile north of the suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. 335 Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC240977  Castilleja pilosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC1727  Castilleja subinclusa E. Stilson 1897-5-1 Butte Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CHSC54336  Caulanthus lasiophyllus Lowell Ahart 1991-5-8 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC48809  Ceanothus cuneatus Lowell Ahart 1980-3-26 2061 Butte Near Hurleton 600 Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  CHSC3277  Ceanothus integerrimus M. L. Hillier 1966-5-9 Butte In small open field along rd. side 6.8 miles n.e. of the Skyway on Humbug rd. Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  CAS-BOT-BC51726  Ceanothus lemmonii W. I. Follett; E. B. Follett 1948-6-1 s.n. Butte Calif. Hwy. 24, 6.2 mi. N. of West Branch Feather River Comment
  CHSC1512  Ceanothus lemmonii 1937-5-1 Butte Forest Ranch. 548 Comment
  SEINET10493646  Ceanothus lemmonii Heidi H. Schmidt 1993-6-15 Schmidt 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC52015  Ceanothus prostratus Barbara Trowbridge 1968-5-4 264 Butte Three miles North of Magalia on Magalia-De Sabla Road 762 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  RSA753078  Ceanothus prostratus Dylan O. Burge 2007-5-11 DOB- 921 b Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) N of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 degrees (True) NNW of Magalia. 850 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  JEPS120082  Celtis australis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near the table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  RSA769801  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  CDA43060  Celtis sinensis L. P. Janeway, B. Castro 2010-6-4 9991 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. Comment
  CHSC97032  Centaurea cyanus L. P. Janeway 2007-7-9 9111 Butte Northern High Sierra Nevada. Plumas National Forest; near 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. 1128 Comment
  CDA7258  Centaurea maculosa W. Gilbert, R. Dodd 1970-7-22 Butte North side of Highway 32 west of California Forestry Station, Forest Ranch, northeast of Chico. 0 Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CHSC102170  Centaurium muehlenbergii Lowell Ahart 2009-6-30 15977 Butte On dry soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC71257  Centaurium tenuiflorum Lowell Ahart 1998-7-1 8025 Butte About 100 yards south of a 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. 403 Comment
  POM76323  Centaurium venustum C. C. Bruce 1897-06 2002 Butte Plains Comment
  CHSC114167  Centromadia fitchii Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16790 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CAS-BOT-BC222895  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC222898  Cephalanthus occidentalis M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca. 2 air mi e of Oregon City on Table Mt, 8 mi n of Oroville 304 Comment
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CHSC90970  Cerastium arvense L. P. Janeway; J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge. 991 Comment
  CHSC10575  Cerastium glomeratum Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10535923  Ceratophyllum demersum Mary Susan Taylor 1982-5-22 Taylor 4493 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
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  CHSC99666  Cercis occidentalis H. Koeth 2007-4-26 Butte Chico State Campus. At the west entrance of Holt Hall, Planter box landscape. UTM 10 598699E 437946N 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
  CHSC27316  Cercocarpus betuloides var. betuloides T. B. Devine 1977-7-24 435 Butte Growing beside Humbug Road, .5 mi s of Nimshew. 609 Comment
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  UC1127838  Cercocarpus betuloides var. betuloides J. E. Sowder 1933-8-4 128 Butte slope above De Sable Power House 457 Comment
  CHSC87207  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  UC600653  Chamaesaracha nana H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CHSC113145  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. 299 Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 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
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  JEPS108953  Chamaesyce maculata Lowell Ahart 2006-9-11 13284 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
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CHSC39229  Cheilanthes gracillima M. S. Taylor; K. Tharp 1983-3-11 5223 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  CHSC42506  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET10529917  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2663 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10838810  Chenopodium album Mary Susan Taylor Taylor 772 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC102985  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UCD117415  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  UC203839  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte near Clear Creek Comment
  CAS-BOT-BC252671  Chorizanthe membranacea Lowell Ahart 1980-5-12 2244 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45845  Chorizanthe membranacea Lowell Ahart 1975-6-5 783 Butte On dredger piles along 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. 39 Comment
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  CHSC94030  Chorizanthe stellulata R. D. Fischer 2005-4-30 734 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on thin Tuscan mudflow of ridge top. 518 Comment
  UC101516  Chorizanthe stellulata Mrs. R. M. Austin 1883-1 Butte Comment
  RSA325174  Cicendia quadrangularis M. S. Taylor, L. Ahart, Jim Jokerst 1984-4-6 5398 Butte Approximately 0.5 mile north of Kunkle Reservoir, on east side of Pentz-Magalia Highway, ca. three miles south of Paradise. Comment
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  JEPS87145  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte small stream about 1/2 mi n Carr Mine (s side of Coon Hollow, about 2 (air) mi s of Snow Mountain); s side Coon Hollow 1737 Comment
  UC1131370  Cinna latifolia H. S. Yates 1936-8-13 6098 Butte Butte Meadows; Paynes Creek Quadrangle Comment
  UC328923  Circaea alpina subsp. pacifica unknown Butte near Camp Colby Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  SJSU11874  Cirsium occidentale var. candidissimum J. B. Willis Jr. 1969-5-3 Butte State Highway 70, 7 mi N of Oroville Comment
  CHSC20255  Cirsium occidentale var. venustum T. Lorenz 1972-4-23 2 Butte Collected adjacent to highway 32, ca. 7.6 mi from highway 99 overpass. Comment
  CDA20150  Cirsium vulgare B. Smith August 1996 s.n. Butte Plumas National Forest; 0.5 mi E of Lumpkin. 1173 Comment
  JEPS119724  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte About 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC397531  Cirsium vulgare E. Bleopelaud 1929-7-1 Butte Jonesville 1650 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC5949  Citrus aurantium M. MacArthur 1968-6-17 180 Butte In large boxes at NE end of lawn between LS bld. and Auditorium, Chico State College campus. 60 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
  CHSC56759  Clarkia concinna subsp. concinna L. P. Janeway 1991-6-1 3988 Butte Cut-bank of Dark Canyon Road 3.6 mi south of Big Bend/Parkhill. 280 Comment
  CHSC96800  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  SEINET10939935  Clarkia mildrediae Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4745 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC1732064  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4422 Butte along Road 23N28 0.2 mi S of Last Chance Creek, 6.2 mi NW of Road 22N34 807 Comment
  CHSC1104  Clarkia mildrediae subsp. mildrediae V. Holt 1935-5-28 Butte Butte Creek. 243 Comment
  CAS-BOT-BC163354  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through steep mid-slope of North Fork Feather River canyon 649 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  CHSC112935  Clarkia purpurea subsp. purpurea B. Castro 2012-6-5 1927 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 540 ft NE of jcn of E. Hamilton and Larkin Roads. 38 Comment
  CAS-BOT-BC164796  Clarkia rhomboidea L. P. Janeway 1991-6-1 3985 Butte Northwest-facing cut-bank of Dark Canyon Road 3.3 mi south of Big Bend Road/Parkhill 304 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  UC1186581  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -118 Butte Tehama-Butte County Line and Highway 32 Comment
  SEINET10572701  Claytonia parviflora Mary Susan Taylor 1981-3-24 Taylor 3440 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC33109  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-5 3619 Butte In shaded creek crossing 21N35 and , ca. 0.5 mi s of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi n of Feather Falls. 853 Comment
  UC726489  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte Chico Comment
  CHSC34945  Claytonia perfoliata subsp. perfoliata Debra Barton 1974-4-7 11 Butte Abundant at Campotel Campground, 3 mi e of Oroville on Hwy. 162, left side of left road entrance, 400 ft from entrance. Comment
  CHSC38630  Claytonia perfoliata subsp. perfoliata Vernon Oswald 1983-2-19 87 Butte Upper Bidwell Park, Chico, beside the North Rim Trail 1.4 mi e of the power lines. 353 Comment
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  CHSC45389  Claytonia rubra subsp. rubra Vernon Oswald 1984-5-9 1177 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Loma). 1158 Comment
  CHSC56076  Claytonia rubra subsp. rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CAS-BOT-BC91346  Clematis lasiantha Lowell Ahart 1974-8-9 s.n. Butte East of Marble Creek. 914 Comment
  CHSC109133  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  JEPS119742  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC135532  Clematis lasiantha Mrs. R. M. Austin May 1896 758 Butte Comment
  UCD95626  Clematis lasiantha P. Thompson 1996-4-26 36 Butte Hwy 70. Along steep roadside next to a running creek. Comment
  CHSC42975  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 south-east of Jarbo Gap. 280 Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC42016  Collinsia sparsiflora var. collina Lowell Ahart 1974-4-15 416 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  CHSC39316  Collinsia tinctoria Lowell Ahart 1983-6-26 4106 Butte Along Ponderosa Way. About 1/8 miles east of the intersection 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
  HSC97025  Collinsia tinctoria L. Ahart 2006-6-9 12654 Butte W side of Bardees Bar Rd., N of small stream, 1/8 mi. W of bridge across N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  UC1012162  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25684 Butte above Oroville (in Lassen National Forest, along Feather River, Route 24); Lassen National Forest, Feather River 548 Comment
  CHSC39679  Collomia heterophylla Lowell Ahart 1983-6-21 4070 Butte On the road cut along Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 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
  SEINET10496935  Collomia heterophylla Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4694 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC43702  Collomia tinctoria Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  POM219472  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. 1500 Comment
  CAS-BOT-BC180254  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  RSA699521  Comandra umbellata subsp. californica R. D. Fischer 2004-4-11 60 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side addition along Hwy 32. Located along 10 Mile House Rd where it parallels Chico Creek. Creek side of rd. 229 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-BC286065  Conyza canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC286068  Conyza canadensis Lowell Ahart 1982-10-6 3848 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  SEINET10470000  Corallorhiza maculata Mary Susan Taylor 1981-5-27 Taylor 3804 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CHSC2334  Corallorhiza striata R. Carter 1964-6-12 117 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown Rd. 914 Comment
  RSA0084710  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-6-30 15973 Butte E side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC48988  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1985-7-15 1906 Butte Concow Rd. 0.2 mi s of Ponderosa Way, also called Rim Rd. 950 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  CHSC48308  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3012 Butte Hiogh Lakes Rd. 1.4 mi (odometer) n of Philbrook Rd. 1767 Comment
  UC426924  Cornus sericea subsp. sericea E. B. Copeland 1930-6-23 431 Butte Jonesville 1500 Comment
  CHSC450  Cornus sessilis V. Holt 1935-3-31 Butte De Sabla. 762 Comment
  CHSC87964  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  JEPS98304  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near 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
  SD60237  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows, Gravely moist places Comment
  CHSC66071  Cotula australis Vernon H. Oswald 1996-5-22 7623 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along river at N end of Riparian Sanctuary. 30 Comment
  SEINET10473719  Cotula australis Lowell Ahart 1983-4-1 Ahart 3916 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC105268  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC29771  Crassula aquatica M. S. Taylor; R. A. Schlising, L. Ahart 1980-5-31 2762 Butte E side of Kunkle Reservoir, ca. 1/4 mi e if Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC65421  Crassula aquatica Vernon Oswald 1988-3-16 3258 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves for Durham Mutual Ditch. 67 Comment
  CHSC30890  Crassula connata J. D. Jokerst 1979-4-2 1172 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  UCSB45763  Crassula connata Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Table Mt. Road Comment
  CHSC6618  Crataegus monogyna M. MacArthur 1968-4-16 308 Butte SW side of Building T, Chico State College campus. 60 Comment
  CHSC44891  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC116010  Croton setiger Lowell Ahart 2015-10-9 20543 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC116134  Croton setiger Lowell Ahart 2015-11-7 20620 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  JEPS28122  Crucianella angustifolia John Thomas Howell 1962-6-16 37612 Butte w of Nelson Bar (Feather River West Branch); Sierra Nevada 304 Comment
  SEINET11170847  Crucianella angustifolia B. Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, 30 Comment
  CHSC33409  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-28 3933 Butte E. of Jonesville, on road towards Scotts John Creek. 1828 Comment
  CHSC96816  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  SEINET10497259  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4724 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CHSC29286  Cryptantha intermedia R. A. Schlising 1980-5-4 3579 Butte Along Lunt Road, 1/4 mi n of jct with Hwy 70, north of Hwy 70 crossing Lake Oroville. Comment
  CHSC29960  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-2 3617 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large 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
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  SEINET10834037  Cupressus macnabiana Mary Susan Taylor 1980-2-17 Taylor 2317 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC113052  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile southeast of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS120791  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile SE of the Honcut Cemetery, about 3 1/4 air miles NE of Honcut. Comment
  CHSC78827  Cycloloma atriplicifolium Lowell Ahart 2000-10-15 8708 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
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  SFV3108  Cynoglossum grande M. L. Vincent 1961-3-30 23 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  CAS-BOT-BC190391  Cynosurus echinatus John Thomas Howell 1961-9-22 36760 Butte Sierra Nevada. North Fork of Feather River 10 miles from Oroville. 304 Comment
  CAS-BOT-BC190392  Cynosurus echinatus Clare B. Hardham 1975-6-7 20429 Butte South end of Oroville Dam. Comment
  JEPS124403  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 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
  JEPS127226  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET13710151  Cyperus acuminatus Lowell William Ahart, Lowell William Ahart 2000-1 8688 Butte Pond on E Side Sacramento River, NW of Parrott Landing, 1 Mi SE ord Ferry, 12 Mi SW Chick Comment
  CAS-BOT-BC114743  Cyperus difformis Herbert L. Mason; Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club. Comment
  CDA13836  Cyperus difformis G. F. Hrusa, T. D. Wilfred 1996-9-5 13564 Butte Butte Basin; Adjacent to Durnel Road north of Nelson Rd. Comment
  CHSC34198  Cyperus difformis J. D. Jokerst; L. Ahart 1981-9-26 1492 Butte Moist swale ca 110 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC85160  Cyperus difformis John Dittes 2003-10-8 849 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC77497  Cyperus eragrostis Anna Pinsky 1997-4-30 41 Butte Chico, Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  CAS-BOT-BC114600  Cyperus eragrostis L. P. Janeway 1987-9-7 2582 Butte Chico E side, along Forest Ave between Little Chico Creek and I. 20th St. 82 Comment
  SEINET10466872  Cyperus eragrostis Mary Susan Taylor 1979-10-3 Taylor 2223 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-BC114380  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CDA13826  Cyperus erythrorhizos G. F. Hrusa, T. D. Wilfred 1996-9-5 13554 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  JEPS119524  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UCD141048  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC34317  Cyperus flavescens L. Ahart 1981-9-6 3123 Butte In the rd gutter across the rd from the rest area just a little s of the Arch Rock tunnel on Hwy 70, ca. 4 mi n of Pulga. 500 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
  CDA2587  Cyperus fuscus L. Ahart, Vernon Oswald 1999-10-3 8287 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UCD139946  Cyperus iria Whitney Brim-DeForest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 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
  CHSC11932  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC97396  Cyperus strigosus Robert Fischer 2006-6-19 1002 Butte Chico. Within upper Bidwell Park in the City of Chico. At edge of a remnant pool in Diversion Channel near junction of Lindo Channel, upstream of weir. 60 Comment
  JEPS108959  Cyperus strigosus Lowell Ahart 2006-9-11 13299 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
  CAS-BOT-BC114205  Cyperus strigosus Lowell Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CHSC37118  Cypripedium fasciculatum L. Ahart 1982-9-13 3809 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  CHSC49468  Damasonium californicum Vernon Oswald 1984-5-9 1184 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. 39 Comment
  CHSC59044  Danthonia californica var. americana Lowell Ahart 1992-7-21 6801 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  CHSC5967  Darmera peltata M. MacArthur 1968-6-17 184 Butte SE edge of Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  JEPS115541  Darmera peltata Lowell Ahart 2009-5-15 15714 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
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  UCD127424  Daucus pusillus R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  SEINET10536232  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3570 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC8795  Delphinium gracilentum Lowell Ahart 1980-4-7 2070 Butte Along Swedes Flat Road, near Bangor 320 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
  CHSC3288  Delphinium nudicaule M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin build. at n. end of Upper Bidwell Park 20 yards from Salmon Hole on Big Chico Creek. Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  CHSC36086  Delphinium nuttallianum R. A. Schlising; J. D. Jokerst, R. Banchero 1980-6-16 3722 Butte 2.0 miles S of jct Skyway and Humboldt Road in Butte Meadows. 1432 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  UCR133595  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CHSC23692  Delphinium patens M. S. Taylor 1976-5-5 1116 Butte Ca. 50 ft s of Hwy 70 along dirt road, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CHSC3854  Delphinium patens subsp. patens L. E. Dunkel 1965-3-30 11 Butte Along south road ascending Table Mountain. 243 Comment
  CHSC56779  Delphinium patens subsp. patens J. D. Jokerst 1981-4-10 1285 Butte Table Mountain; west edge of mountain, 100 m north of Cherokee Road. 335 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  CHSC52120  Delphinium variegatum R. E. Alumbaugh 1984-4-26 1 Butte 6.4 mi e of hwy 99 and ca. 50 yds n of Skyway, 8.5 mi e of Chico. 387 Comment
  CHSC52508  Delphinium variegatum Patricia Collins 1981-4-22 11 Butte Field near the bank of Singer Creek, ca. 21 km nw of Chico. Intersection of Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC90007  Delphinium variegatum subsp. variegatum Charles Crannell 1991-4-22 18 Butte Found along side of Hwy 32, 4.1 mi northeast of Chico. 243 Comment
  RSA755267  Delphinium variegatum subsp. variegatum L. Ahart 2009-5-15 15702 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC101116  Dendromecon rigida Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC29239  Dendromecon rigida M. S. Taylor 1980-5-8 2592 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi. e of Hwy 32. 853 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CHSC97364  Deschampsia danthonioides Paul Maslin 2005-5-1 62 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608788E 4410151N. 518 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC2518  Dicentra formosa W. Fitzwater 1958-4-26 Butte Below Forest Ranch, ca. 15 mi. NE of Chico. Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
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Jul 7 2010
  LA47703  Dicentra formosa E. B. Copeland; 1929-7-22 364 Butte Jonesville 1500.0 Comment
  CHSC19656  Dicentra peregrina K. R. Stern 1966-4-1 Butte Chico. Comment
  SEINET11688337  Dichanthelium acuminatum subsp. fasciculatum L. Ahart, Ahart, P. 1984-1 4726 Butte about 1.5 mi SE of Bald Mtn, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  UCD139229  Dichelostemma capitatum Richard Sannar 1982-3-23 30 Butte south end of 18th street, about .25 mile south State route 162 in Thermalito. Comment
  UCD148232  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2893 Butte 7.9 mi NNE of Oroville, along E side of Clark Rd, 0.9 mi N of its jct with Hwy 70. 84 Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET12050315  Dichelostemma multiflorum Unknown 1985-1 5057 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yds S of dirt road 975 Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  UCD139266  Dichelostemma volubile Don Blosser 1970-5-9 12 Butte on Skyline Blvd. near Skyline Way, 5 miles east of Oroville. Comment
  JEPS120151  Digitaria ischaemum Lowell 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. Comment
  CAS-BOT-BC209031  Digitaria sanguinalis John Thomas Howell 1961-9-22 36733 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 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
  JEPS119518  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC51080  Diplacus jepsonii Pauleen Broyles 1987-7-5 1075 .5 Butte Ca 7 km n of Inskip. 1500 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
  CHSC3320  Diplacus kelloggii M. Gregg 1966-3-28 55 Butte On Cherokee Rd. north of Oroville. On top of Table Mt. Comment
  CHSC67392  Diplacus kelloggii James D. Jokerst; R. A. Schlising 1985-4-8 2220 Butte Above Hwy. 70 2.3 mi SE of Pulga Rd. 609 Comment
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 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
  CAS-BOT-BC153337  Diplacus layneae Lewis S. Rose 1955-6-14 55096 Butte Magalia 731 Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC92735  Diplacus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  SD7102  Diplacus torreyi Daniel Cleveland July 1882 Butte Sutton House Comment
  CHSC1803  Diplacus tricolor P. Delaplane 1965-3-23 15 Butte Sparsely distributed on H. Wurlitzer Ranch: Ca. 13 mi NW of Chico, W. of Hwy 99E N. 106 Comment
  CAS-BOT-BC208613  Distichlis spicata Lowell Ahart 1981-5-16 2808 Butte Along the edge of the road, Gray Lodge Waterfowl Management Area, 11 miles SW of Gridley 35 Comment
  CHSC116523  Distichlis spicata B. Castro 2012-9-29 1987 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along The park road from its origin at Wildwood Ave. 132 Comment
  CHSC78360  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CDA43367  Dittrichia graveolens D. G. Kelch 2012-9-19 12 .356 Butte Oroville, immediately west of sewage treatment plant. 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
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC13897  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 248 Butte 0.3 mi e on Neal Road from Hwy 99 on n side of road. Comment
  CHSC3563  Dodecatheon clevelandii subsp. patulum R. D. Briggs 1966-3-21 39 Butte Along Durham-Pentz Rd., 5 miles SSE of downtown Chico and 1 mile west of hwy US 99E. 57 Comment
  HSC23407  Dodecatheon clevelandii subsp. patulum Willis Ball 1970-2-24 70 Butte N edge of Bidwell Golf Course 107 Comment
  CHSC14047  Dodecatheon hendersonii J. F. Goodwin 1974-3-11 184 Butte Ca. .8 mi se on Oregon Gulch Rd from its intersection with Cherokee Rd, Table Mt, n of Oroville. Comment
  POM253217  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-23 15045 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  UCD123714  Dopatrium junceum June McCaskill; G. D. Barbe 1990-9-5 4395 Butte experimental fields of Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  SEINET7073007  Downingia bacigalupii A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  CHSC28146  Downingia bicornuta Robert A. Schlising; Ellen Sanders 1979-4-28 3379 Butte Near Richvale; vernal pools in grassland w of Hwy 99 and Thermalito Afterbay, 1/4 mi s of jct Hwy 99 and Hwy 162 to Oroville. Comment
  POM59018  Downingia bicornuta A. A. Heller, H. E. Brown 1902-5-3 5448 Butte Near Nelson Comment
  CHSC112888  Downingia bicornuta var. bicornuta Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC70790  Downingia bicornuta var. bicornuta B. Castro 1995-6-6 574 Butte Ca 4 air mi SE of Chico, W of Hwy 99, on E side of the Oro-Chico Hwy ca 0.3 mi N of its jcn with Neal Road. 53 Comment
  CHSC31556  Downingia cuspidata L. Ahart 1978-5-12 1713 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC82224  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC19930  Draba verna M. S. Taylor 1975-3-3 396 Butte Along creek ca. 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 182 Comment
  CHSC34537  Draba verna var. aestivalis R. E. Preston 1982-2-21 177 Butte N facing slope of small side branch of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 243 Comment
  CHSC39617  Draba verna var. aestivalis Lowell Ahart 1983-4-1 3914 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC46482  Draba verna var. verna Lowell Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CHSC84243  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  SFV11589  Draperia systyla M. L. Vincent 1968-6-10 838 Butte Sierra Nevada 1.2 miles south from Cresta Power House sign, North Fork Feather River. 460 Comment
  CHSC109669  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS119718  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC28512  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1979-10-13 2267 Butte On Jordan Hill Rd (Ponderosa Way on some maps) ca. 7.1 mi n of its jct with Concow Rd, ca. 2 mi se of Magalia. Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  UCSB64005  Dysphania ambrosioides Ahart, Lowell; Jokerst, Jim 1981-9-26 Butte Near the Sacramento River, about 6 miles west of Chico 36 Comment
  SD8071  Dysphania pumilio Daniel Cleveland 1882-6-7 Butte Comment
  CHSC108611  Echinochloa colona L. P. Janeway 2011-10-20 10781 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
  CDA14356  Echinochloa oryzicola B. Voorhees 1997-8-21 s.n. Butte Davit Dayton Ranch, south of Chico. 0 Comment
  RSA777517  Echinochloa oryzicola L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  UCD137960  Echinodorus berteroi W. W. Robbins 1931-9-3 2253 Butte Biggs. Comment
  SEINET10474219  Eclipta alba Mary Susan Taylor 1980-9-26 Taylor 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset Rds, Chico. 46 Comment
  CHSC33245  Eclipta prostrata Mary Banchero 1979-9-23 40 Butte SW of Chico and e of Ordbend at w margin of Butte Co. at Sacramento River and Ord Ferry Road. 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
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC84023  Elatine rubella Lowell Ahart 2003-6-19 10292 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  SEINET10447968  Elatine rubella Lowell Ahart 1984-5-8 Ahart 4598 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD49689  Eleocharis acicularis var. occidentalis L. Ahart 2000-9-15 8691 Butte Normal sized plants, on wet bare sand, 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
  CAS-BOT-BC113413  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte In rice plots, Biggs Rice Experiment Station Comment
  CHSC84716  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  CAS-BOT-BC113374  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, Honcut, ca 2.5 mi N and 1/4 mi E of Honcut. 50 Comment
  HSC95808  Eleocharis engelmannii L. Ahart 2003-6-23 10302 Butte Fallow rice field on Peter Ahart Ranch, 300 yds. E of Palermo Honcut Hwy., 2 1/8 mi. N of Honcut, 12 mi. S of Oroville 30 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC28829  Eleocharis macrostachya J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 421 Butte Top of North Table Mt, ca 1.0 mi n of east edge jct with Cherokee Rd. 381 Comment
  CHSC29283  Eleocharis macrostachya R. A. Schlising 1980-4-2 3538 Butte Richvale vernal pools. S of junction of Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC68439  Eleocharis macrostachya L. P. Janeway 1988-6-29 2907 Butte Spring where Crouch Ravine fades into Cool Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  CHSC45142  Eleocharis pachycarpa Lowell Ahart 1969-7-12 29 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS98717  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte 13 mi SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  CHSC76304  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  UC1586534  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte 2 mi E of Honcut (Joie Osgood Ranch) 45 Comment
  CHSC78306  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte By the road culvert on the northwest 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
  JEPS98362  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte 4 air miles N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd N to Fall River, and the County Road) 1219 Comment
  JEPS98511  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8555 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CDA38989  Eleocharis quinqueflora L. Ahart 2000-5-3 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC44534  Elymus glaucus Lowell Ahart 1988-6-21 6052 Butte Along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 365 Comment
  CHSC49577  Elymus multisetus Vernon Oswald 1987-6-2 2944 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  SEINET10560390  Elymus repens Lowell Ahart 1982-7-10 Ahart 3668 Butte On dry soil, forming a dense colony, 1/12 mi w of check-in station on n side of dirt rd, Graylodge Wildlife Refuge, 12 mi sw of Gridley. 35 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
  UC873501  Epilobium brachycarpum A. A. Heller 1914-7-23 11602 Butte edge of the forest about Chico Meadows 1219 Comment
  UCD105294  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 miles N of Oroville. Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  UC873160  Epilobium campestre Lewis S. Rose 1937-6-11 37382 Butte 7 mi w Honcut 22 Comment
  CHSC12074  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-10 55 Butte At the fern banks, Bidwell Park, Chico. On cliffs overlooking Big Chico Creek. 64 Comment
  JEPS115361  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 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
  SEINET6637245 Image available Epilobium ciliatum subsp. ciliatum H. F. Copeland 1923-1 920 Butte Nelson Comment
  SEINET6637246 Image available Epilobium ciliatum subsp. ciliatum H. F. Copeland 1927-1 413 Butte Jonesville 1524 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  CHSC94617  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-11 13287 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
  POM183928  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-23 s.n. Butte Jonesville, meadow near Jonesville Inn 1500 Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  JEPS119636  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC21136  Epilobium densiflorum M. S. Taylor 1975-6-30 817 Butte In ditches, ca. 500 yds e of Cohasset Hwy, ca. 500 yds ne of Greenwood Store, Cohasset. 853 Comment
  CHSC43149  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 48 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  UCD106306  Epilobium densiflorum M. Vincent 1963-6-8 394 Butte Honey Run Road. Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  CHSC54442  Epilobium glaberrimum Vernon H. Oswald; Lowell Ahart 1991-7-15 4738 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. Just upstream from the bridge. 1051 Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest 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
  CHSC70342  Epilobium minutum R. A. Schlising 1980-6-17 3732 a Butte Along Skyway, N of Magalia and De Sabla, ca. 1.5 mi SW of junction with Coutelenc Road at Lovelock. 780 Comment
  RSA712758  Epilobium minutum L. P. Janeway 2005-5-29 8400 Butte Northern High Sierra Nevada. Between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. (NAD83) 762 Comment
  CHSC45336  Epilobium obcordatum Vernon Oswald 1983-8-17 987 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  SEINET177952  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville at 'The Summit 2000 Comment
  CHSC46681  Epilobium oregonense V. Oswald; L. Ahart 1989-8-15 3935 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In a meadow adjacent to a lake n of and visible from the road. 1752 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS110236  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  JEPS117724  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  RSA0118769  Equisetum laevigatum Lowell A. Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 0.5 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3.75 miles (air) northeast of Honcot. 50 Comment
  SEINET10470670  Equisetum laevigatum Lowell Ahart 1983-4-22 Ahart 3937 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Riparian Woodland; 50 m. 50 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
  CHSC31705  Eragrostis cilianensis L. Ahart 1979-10-2 2023 Butte In a garden, at the jct of Lower Honcut Rd and Smullin Rd, Honcut. 33 Comment
  CHSC44921  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 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
  CHSC97293  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  UCD62970  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  UCD62990  Eragrostis curvula J. W. Jones 1930-6-20 Butte Biggs. Comment
  CHSC49239  Eragrostis curvula var. curvula Vernon Oswald 1984-5-9 1174 Butte Between Chico and Forest Ranch on Hwy 32, 6.7 mi n-e of Calif. Hwy 99. On the edge of the road. 411 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CAS-BOT-BC213614  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34683 Butte Eastern outskirts of Oroville, Sierra Nevada Comment
  SEINET10507722  Eragrostis pectinacea Lowell Ahart 1984-9-24 Ahart 4811 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC47617  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 667 Butte On the bottom of a swale, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CAS-BOT-BC174107  Eremogone aculeata Anna Head 1920-7-20 s.n. Butte Top of ridge near Round Lake, Feather River Region 2133 Comment
  CHSC78797  Ericameria arborescens Vernon H. Oswald 2000-9-23 9971 Butte Lumpkin Rd 2.0 mi northwest of the Enterprise Bridge over Lake Oroville. 518 Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  RSA32021  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  CAS-BOT-BC295418  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  CHSC43603  Erigeron inornatus var. inornatus Vernon Oswald 1983-7-6 813 Butte On Humboldt Rd. (to Butte Meadows) 0.6 mi e of its jct. with Calif. Hwy. 32. 1249 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  JEPS119900  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CDA28201  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC216048  Eriodictyon californicum A. A. Heller 1928-4-30 14535 Butte Along the Neal Road about 3 miles below Paradise Comment
  RSA401485B  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Road, 3 miles northeast of Centerville Comment
  SBBG16968  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Rd, 3 mi NE of Centerville Comment
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  UC426902 Image available Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte above Jonesville; ; above Jonesville, Butte Co. 2000 Comment
  CHSC58939  Eriogonum marifolium var. marifolium Lowell Ahart 1992-7-29 6892 Butte Around and on rocks, about 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 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
  CHSC39141  Eriogonum nudum var. pubiflorum R. A. Schlising 1981-6-22 4106 Butte Lumpkin Ridge, e of village of Feather Falls. 1280 Comment
  CHSC58940  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC262211  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville 2050 Comment
  CAS-BOT-BC262212  Eriogonum ursinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC39091  Eriogonum ursinum var. ursinum R. A. Schlising 1980-7-28 3935 Butte N part of county, E of Jonesville on road to Scotts John Creek. Comment
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 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
  UC194735  Eriophyllum lanatum var. grandiflorum A. A. Heller 1902-5-16 Butte slope of East Butte; Marysville Buttes, East Butte Comment
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) Comment
  RSA715577  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD103171  Erodium cicutarium John Thomas Howell 1975-6-15 51052 Butte Chico. 60 Comment
  UCR237331  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18749 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  CHSC38734  Eryngium castrense Vernon Oswald 1983-5-8 456 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC27980  Erysimum capitatum var. capitatum M. S. Taylor 1978-7-18 1712 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC29240  Erythranthe bicolor M. S. Taylor 1980-5-8 2590 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC29395  Erythranthe bicolor R. A. Schlising; S. Azevedo 1980-6-13 3697 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC42864  Erythranthe breweri Lowell Ahart 1987-5-12 5633 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC1759  Erythranthe cardinalis R. M. Staley 1953-7-13 Butte Butte Creek. Comment
  CAS-BOT-BC153864  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC44907  Erythranthe glaucescens Lowell Ahart 1988-7-31 6144 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC44944  Erythranthe glaucescens Cathy Young 1988-4-23 8 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC77495  Erythranthe glaucescens Anna Pinsky 1997-4-24 13 Butte Chico, Upper Bidwell Park, Salmon Hole, above Chico Creek, on rock outcrop. 30 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  CHSC105165  Erythranthe guttata Christopher T. Ivey 2007-4-28 366 Butte Clark Road, along Dry Creek, in cattle pasture on W side of road, 2.4 m S of Durham-Pentz Rd, 1.2 m N of Hwy 70. 82 Comment
  CHSC2527  Erythranthe guttata W. Fitzwater 1958-3-15 Butte Rock Creek, Chico area. 243 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC48999  Erythranthe microphylla Vernon Oswald 1984-3-26 1111 Butte Hamilton-Nord-Cana Hwy, 0.5 mi n of Bennett Rd. 48 Comment
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. Comment
  CHSC44782  Erythranthe nasuta R. Banchero 1980-3-23 76 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC49009  Erythranthe pulsiferae Vernon Oswald 1987-6-9 2973 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbuf Rd. between Butte Creek House and Snag Lake. 1813 Comment
  SEINET10469660  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3473 Butte T20N R6E se sec 15; Forbestown quad. S side of Rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Yellow Pine Forest opening; 2500 ft. 762 Comment
  CHSC10602  Erythronium multiscapideum Lowell Ahart 1968-3-17 Butte Bidwell Park. 91 Comment
  CHSC36220  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  POM109649  Erythronium multiscapideum C. C. Bruce 1897-04 2011 Butte Butte Creek Comment
  SEINET10528912  Erythronium multiscapideum Nelson 1979-4-24 NELSON s.n. 1979 Butte Population at vicinity of intersection of Coutelene Rd. and Skyway, 0.25 mi n of Magalia. Soil Serpentine. 3000 feet. 915 Comment
  CHSC43796  Erythronium purpurascens Vernon Oswald 1984-7-12 1575 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  SEINET12091620  Eschscholzia glyptosperma D. K. Aust 1981-1 3 Butte Bidwell Park, Chico, ca 200 yds W of Horseshoe Lake, Wildwood Ln, 2.5 mi W of Manzanita Road; 107 Comment
  CHSC20114  Eschscholzia lobbii M. S. Taylor 1975-4-26 509 Butte Scattered in meadow on e side of Kunkle Reservoir, ca. 40 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  UC85512  Eschscholzia lobbii Mrs. R. M. Austin Apr. 1899 93 Butte near Chico Comment
  JEPS118625  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley. Near edge of water, south side Feather River just east of Bedrock Park, Oroville. Lamoine 7.5 minute quadrangle, 665-2, 1998 Comment
  CAS-BOT-BC312030  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  CHSC236  Euonymus occidentalis V. Holt; M. Underhill 1952-7-7 Butte Magalia. 670 Comment
  SEINET10841031  Euphorbia glyptosperma Mary Susan Taylor 1980-6-29 Taylor 2988 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  JEPS119517  Euphorbia maculata Lowell Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  RSA746974  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC115428  Euphorbia peplus Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  SEINET8687814 Image available Eurybia radulina K. Conger 1907-1 151 Butte Brush creek Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  CHSC94615  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  SEINET10474656  Evax caulescens Lowell Ahart 1983-5-12 Ahart 3975 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS116648  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Along Four Trees Road 3.4 road km east of Coyote Gap Soapstone Hill (at head of minor drainage into Clear Creek, head of French Creek Basin); Northen High Sierra Nevada 1469 Comment
  SEINET10920743  Festuca californica Lowell Ahart 2007-5-29 Ahart 13939 Butte T21N, R6E, Secton 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  CHSC42919  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  CHSC94294  Festuca occidentalis Lowell Ahart 2006-7-16 12958 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  CHSC108172  Frangula californica subsp. tomentella L. P. Janeway 2011-8-18 10665 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  UCD112786  Frangula californica subsp. tomentella J. I. Mallory 1968-5-29 289 Butte 0.75 mile northeast of Union Hill. 670 Comment
  CAS-BOT-BC55654  Frangula purshiana Lowell Ahart 1981-9-15 3175 Butte On the W side of the Sly Creek Reservoir 1150 Comment
  CAS-BOT-BC55657  Frangula purshiana C. R. Quick 1953-8-11 53 -126 Butte Rag Dump Meadow se. of Stirling City Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  JEPS115585  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC130424  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC2286  Fritillaria recurva N. Maxwell 1929-3-17 Butte Forest Ranch. 548 Comment
  POM225409  Fritillaria recurva Anonymous, Flower Show 1929-04 Butte [no additional locality information] Comment
  SEINET10500615  Galium aparine Mary Susan Taylor 1981-5-14 Taylor 3711 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC20972  Galium bolanderi M. S. Taylor 1975-9-12 906 Butte Ca. 24 mi NE of Chico, ca. 500 ft W of Hwy 32. 1066 Comment
  UC1586556  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte about 1 1/4 mi n and 2 1/2 mi e Honcut (about 12 mi se of Oroville, banks of a small wash); Peter Ahart Ranch 48 Comment
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 747 Comment
  CHSC31921  Galium porrigens var. tenue M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3380 Butte 20 ft E of Lumpkin Rd, on N side of Macabes Creek, ca. 2 mi N of jct of Lumpkin Road and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  CHSC32670  Galium porrigens var. tenue M. S. Taylor; D. Hemphill 1981-3-18 3426 Butte S of bridge crossing West Branch Feather River, ca. 50 ft W of the river, ca. 1 mi NE of Magalia. 487 Comment
  UC1562386  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte near McCabe Creek (below high water line of lake, about 1/2 mi sw of the Enterprise Bridge across lake); Lake Oroville 243 Comment
  CHSC42391  Gamochaeta argyrinea Lowell Ahart 1987-6-9 5738 Butte 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
  UC1562286  Gamochaeta coarctata Lowell Ahart 1990-7-20 6573 Butte about 1 1/2 mi n and 3 mi e Honcut (about 12 mi se of Oroville); North Honcut Creek, Peter Ahart Ranch 54 Comment
  CAS-BOT-BC303386  Gamochaeta ustulata Lowell Ahart 1987-6-9 5738 Butte On the W side of the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CDA2169  Gastridium phleoides L. Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  SEINET10507449  Gastridium ventricosum Lowell Ahart 1985-6-17 Ahart 5050 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  HSC87163  Gayophytum heterozygum Robert Banchero, Robert A. Schlising 1980-7-28 3926 Butte Chico Meadows, 1 mi. N of Butte Meadows 1317 Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  CHSC60998  Gayophytum humile Lowell Ahart 1993-6-26 7033 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  POM181516A  Gayophytum racemosum H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  CHSC3194  Genista monspessulana Dona Kingsford 1966-3-31 Butte 1.2 miles from 4th. Street entrance of Bidwell Park. Comment
  JEPS117139  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 38 Comment
  UCD105746  Genista monspessulana Michael A. Vincent; Ethan H. Freid 1998-4-6 8109 Butte Table Mountain. Along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 Comment
  CHSC3968  Geranium carolinianum J. Senter 1967-4-10 18 Butte Located 200 yds. S. E. slope ca. 60 yards from Honeyrun Road. 76 Comment
  SBBG17317  Geranium carolinianum M. Vincent 1962-4-15 171 Butte intersection of Bernum and Pentz Rds Comment
  CDA38793  Geranium dissectum L. Ahart 2012-5-2 17968 Butte Under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS88265  Geranium dissectum Vernon H. Oswald and Lowell Ahart 1966-5-27 7661 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, S side of the levee road at the SW corner of Tract 3.4, Sanctuary II Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CDA4657  Geranium dissectum T. C. Fuller 1962-5-17 8704 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC30298  Geranium molle M. S. Taylor 1980-5-27 2644 Butte Among grasses in parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC34809  Geranium molle M. S. Taylor 1980-4-27 2566 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CHSC35319  Geranium molle M. S. Taylor; K. Tharp 1982-4-8 4284 Butte At end of Beckwourth Rd, just above Oroville Dam overlook parking area, Oroville. 320 Comment
  CHSC50048  Geranium molle Lowell Ahart 1990-4-8 6435 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CDA31943  Geranium purpureum L. Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown Comment
  CHSC93994  Geum macrophyllum R. D. Fischer 2004-6-20 766 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found along stream edge downstream of pond. 1371 Comment
  CHSC46391  Gilia capitata subsp. mediomontana Lowell Ahart 1989-5-29 6312 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  SEINET10496751  Gilia leptalea Mary Susan Taylor 1978-7-19 Taylor 1762 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  UCSB44171  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 4 miles west on Cherokee Rd. from Hwy 70 Comment
  CHSC45500  Gleditsia triacanthos Lowell Ahart 1988-10-28 6190 Butte On the south side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  JEPS120858  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  JEPS95316  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte about 1 1/2 mi S of Oroville Airport (S side of the Shooting Area, SW of Oroville) 45 Comment
  CHSC61221  Glyceria declinata Lowell Ahart 1993-4-5 6927 Butte Floor of a rice field on the south side of Cottonwood Road, about 1/2 mile east of Highway 99. 36 Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CAS-BOT-BC302479  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte On the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow 1920 Comment
  CHSC33643  Gnaphalium palustre M. Merryman; R. A. Schlising 1979-9-23 49 Butte SW of Chico, just e of Ord Ferry and Sacramento River. On riverbank. 30 Comment
  SD122586  Gnaphalium purpureum Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way 1/8 mile west of Ponderosa Dam; 2 miles northwest of Forbestown. 370 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC118061  Gratiola ebracteata Daphne K Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 231 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  JEPS104637  Grindelia hirsutula Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, ca 1/8 mi e of Bean Creek Rd, ca 1 1/4 mi (air) se of Little Bald Rock, ca 4 mi (air) se of Brush Creek. 801 Comment
  CHSC35080  Hackelia californica R. Schlising; D. Ikeda, R. Banchero 1980-6-26 3789 Butte 4.0 mi SE of Butte Meadows on Bull Hill Road. 1536 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  UC119829  Hastingsia alba Mrs. R. M. Austin July 1896 799 Butte Colby Comment
  CHSC116730  Hedypnois cretica Lowell Ahart 2016-5-25 20875 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of LaPorte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC78122  Hedypnois cretica Lowell Ahart 2000-5-31 8429 Butte Below the high water line of Lake Oroville, about 400 yards est of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC41317  Helenium bigelovii S. C. Morey 1983-7-23 596 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC78371  Helenium bigelovii Vernon H. Oswald 2000-7-13 9940 Butte Forest road 25N02 between Jones Meadow and Bald Mountain Lookout. 1731 Comment
  SBBG54694  Helenium bigelovii E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  CAS-BOT-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CHSC35991  Helianthella californica var. nevadensis J. D. Jokerst 1982-5-8 1567 Butte N of Forbestown along Ponderosa Way 3/10 mi. N of its jct with Lower Forbestown Rd. Comment
  SEINET10475610  Hemerocallis fulva Mary Susan Taylor 1975-6-22 Taylor 782 Butte California State University, Chico, campus. 61 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  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
  JEPS33802  Hesperevax caulescens W. L. Jepson 1932-5-9 16368 Butte 6 mi n Nord (e of Cana (a small station on the S.P. Railroad)) 45 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
  JEPS115990  Hesperocnide tenella Lowell Ahart, Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CHSC60104  Hesperolinon californicum B. Castro; L. P. Janeway 1992-5-9 449 Butte In bottom of unnamed canyon SE of Neal Road in dark, deeply cracking clay in grassland phase of surrounding Foothill Woodland community. 70 Comment
  CAS-BOT-BC175998  Hesperolinon californicum Lowell Ahart 1977-5-11 154 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC47435  Hesperolinon micranthum Lowell Ahart 1979-5-29 1890 Butte About 1/4 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  SEINET10903214  Hesperolinon micranthum Mary Susan Taylor 1978-5-6 Taylor 1575 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC100911  Heterocodon rariflorum R. A. Schlising 1979-5-4 3436 Butte South of Cohasset. 457 Comment
  SEINET10972526  Heterocodon rariflorum Conger CONGER 1907 Butte BRUSH CREEK Comment
  CAS-BOT-BC143628  Heteromeles arbutifolia Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC143630  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  RSA0072449  Heteromeles arbutifolia L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  SEINET10483349  Heteromeles arbutifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4113 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC43244  Heterotheca oregona var. compacta Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM92886  Heuchera micrantha C. C. Bruce 1897-05 2041 Butte Butte Creek. Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC38521  Hoita macrostachya Vernon Oswald 1983-7-28 936 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 207 Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CHSC31385  Hordeum murinum subsp. leporinum J. D. Jokerst 1979-4-13 1193 Butte Top of North Table Mt., ca 200 meters N of the intersection of Cherokee Rd and the E edge of the mountain. 396 Comment
  JEPS115240  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS116046  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-17 15562 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 Comment
  SEINET10483369  Horkelia tridentata Mary Susan Taylor 1980-5-8 Taylor 2613 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
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  UC398920  Horkelia tridentata subsp. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  SD2233  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CAS-BOT-BC536251  Horkelia tridentata var. tridentata H. F. Copeland 1920-7-11 53 Butte By Butte Creek 1828 Comment
  CAS-BOT-BC536252  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CAS-BOT-BC536259  Horkelia tridentata var. tridentata H. C. Cantelow 1940-5-10 s.n. Butte 2.3 miles west of Brush Creek Ranger Station Comment
  CHSC69108  Hosackia crassifolia var. crassifolia Lowell Ahart 1997-8-1 7794 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  CHSC41315  Hosackia oblongifolia var. oblongifolia S. C. Morey 1983-7-22 551 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC55469  Hydrocotyle umbellata L. P. Janeway 1991-4-21 3916 Butte About 1 1/4 mi south of Wyandotte and 1/8 mi west of Dunstone Road. 167 Comment
  CHSC96935  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  SEINET10720066  Hypericum anagalloides A. Arthur Heller 1914-8-6 Heller 11637 Butte Chico Meadows. 1219 Comment
  CDA13229  Hypericum concinnum G. F. Hrusa, T. D. Wilfred 1996-7-8 13076 Butte Plumas National Forest; Old gun range along Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  SBBG4758  Hypericum concinnum H. and M. Dearing 1938-6-21 2047 Butte near Lone Pine Lookout, 19 mi N of Chico Comment
  JEPS98550  Hypericum mutilum Lowell Ahart 2000-7-18 8602 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
  CDA13831  Hypericum perforatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13559 Butte Butte Basin; 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC37395  Hypericum perforatum R. A. Schlising 1980-8-31 3972 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
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC67203  Idahoa scapigera James D. Jokerst 1992-4-14 3346 Butte Stone Ridge Ranch. E of Cohasset Hwy. and Chico Municipal Airport, S of barn on ridge top. 91 Comment
  UC1564773  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte ne of Chico (Richardson Springs, n of the falls on East Branch of Mud Creek); Richardson Springs 243 Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC133561  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte Near Stirling 1074 Comment
  CAS-BOT-BC133562  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  RSA137403  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22525 Butte State Highway 32, 6.9 miles south from Lomo, at junction with road from Butte Meadows 1037 Comment
  CHSC61244  Iris hartwegii subsp. hartwegii K. B. McShea 1992-4-23 13 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  CHSC84916  Iris macrosiphon Ron P. Garcia 1995-4-23 20 Butte E side of Coutolenc Rd, 0.1 mi n of Skyway, ca. 0.5 mi n of Magalia. 707 Comment
  SEINET10469752  Iris macrosiphon Mary Susan Taylor 1975-2-16 Taylor 379 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC69946  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  RSA261555  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles NE of Bangor and ca 15 miles SE of Oroville. 343 Comment
  CHSC29118  Isoetes nuttallii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2438 Butte Ca. 150 ft nw of jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  UC1259505  Isoetes nuttallii Lowell Ahart 1979-4-6 Butte 3 mi. n.w. Bangor (w. side of N. Honcut Creek); N. Honcut Creek 110 Comment
  SEINET10530333  Isoetes nuttallii Mary Susan Taylor 1984-4-6 Taylor 5399 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
  UCSB44160  Isoetes nuttallii Reisentz, Paul 1979-5-12 Butte Along road, 1.3 miles W on Lunt Rd. from Hwy 70. Comment
  CAS-BOT-BC112445  Isolepis cernua Lowell Ahart 1989-5-23 6270 Butte In Dutch Ravine ca. 1/8 mi N of Swedes Flat Rd, ca. 1 1/2 mi E of the Oroville Bangor Hwy 426 Comment
  CHSC38471  Juglans californica var. hindsii Vernon Oswald 1983-5-4 427 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 500 ft e of the power lines. 91 Comment
  JEPS120841  Juncus acuminatus Lowell Ahart 2013-7-9 18829 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  JEPS87447  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  UCD141317  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CHSC38918  Juncus bufonius var. congestus Vernon Oswald 1983-6-7 648 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC97238  Juncus bufonius var. congestus Lowell Ahart 2007-6-3 13971 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  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
  CHSC31905  Juncus capitatus L. Ahart 1973-5-24 226 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC73490  Juncus covillei var. obtusatus B. Castro; L. Gehrung 1995-7-26 598 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. Meadow E of road. 1143 Comment
  SEINET11787470  Juncus cyperoides P. Ahart, Ahart, L. 1984-1 4692 Butte ca 0.5 mi SW of jct of Black Bart Rd & Forbestown Rd, ca 14 mi E of Oroville 650 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC111716  Juncus effusus subsp. pacificus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CHSC96878  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14289 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC99762  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS115974  Juncus effusus var. exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  RSA718307  Juncus effusus var. exiguus L. P. Janeway 2006-8-6 8828 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC11961  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville. In marsh. 1550 Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD141535  Juncus ensifolius Robert E. Preston 1982-7-16 337 A Butte Crane Valley. 1584 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  SEINET11787694  Juncus ensifolius R. A. Schlising, Jokerst, J. B. 1982-1 1660 Butte W branch of Feather River, Coon Hollow where forest service rd 27N74 crosses river 1615 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
  CHSC117019  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte Depression (mud puddle) in the middle of a poor road, about 50 yards east of cow corral, about 200 yards north of the County Road, about one mile we of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC59021  Juncus howellii Lowell Ahart 1992-7-26 6840 Butte Near a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UC1258091  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte 2.5 mi se Paradise (on e side of Kunkle Creek, 0.25 mi n of Kunkle Reservoir) 500 Comment
  CHSC54165  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte On the sides and bottom bottom of a small vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  CHSC27049  Juncus leiospermus var. leiospermus Lowell Ahart 1978-4-17 1644 Butte Table Mountain, 6 mi n of Oroville. On the bottom of a small vernal pool. The pool is on top of Table Mountain where it is open and where people park their cars to look at the flowers. The park area is the largest on the top of the mountain. 400 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC97419  Juncus occidentalis Robert Fischer 2006-5-28 1023 Butte Chico. Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. 243 Comment
  CHSC99745  Juncus occidentalis Lowell Ahart 2008-6-13 14816 B Butte Along a small road, small meadow, bottom of an old gold mined area, about 180 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44525  Juncus oxymeris Lowell Ahart 1988-6-23 6069 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
  CHSC88164  Juncus oxymeris Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 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
  CAS-BOT-BC312666  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch. Honcut Comment
  CHSC97123  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte On the south side a drainage ditch, on the north side of Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC235680  Keckiella breviflora var. glabrisepala Mrs. C. C. Bruce 1898-5-1 2008 Butte Unspecified Comment
  CHSC44721  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-5 196 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  UC1562418  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte about 4.5 mi sw Oroville (about 0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  RSA293267  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Immediately along the Feather River, 2.9 miles south of the Plumas Co line. [Along CA 70.] 550 Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  CHSC110352  Kickxia elatine B. Castro 2006-8-10 1596 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal at dirt road crossing the canal. 35 Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CDA7509  Lactuca saligna T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  RSA754844  Lactuca serriola L. Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 mile east of Honcut, about 12 air miles south of Oroville. 32 Comment
  POM181475  Lactuca serriola H. F. Copeland 1923-1 864 Butte Nelson. Comment
  CAS-BOT-BC341291  Lagophylla glandulosa John Thomas Howell 1961-9-22 36746 Butte Feather River Highway, 3 miles from Oroville Comment
  CAS-BOT-BC341292  Lagophylla glandulosa John Thomas Howell 1962-6-15 37486 Butte Magalia 731 Comment
  CAS-BOT-BC341299  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  JEPS104007  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  CAS-BOT-BC337912  Lasthenia californica Lowell Ahart 1970-4-20 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC337911  Lasthenia californica A. A. Heller; H. E. Brown 1902-5-5 5450 Butte Near Chico Comment
  CHSC108818  Lasthenia californica subsp. californica Lowell Ahart 2012-4-9 17834 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  UC135155  Lasthenia californica subsp. californica Dr. E. B. Copeland 1903-4-10 3038 Butte Chico Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  SEINET11806710  Lasthenia fremontii Unknown 1984-1 12 Butte ca 12 mi NW of Chico at jct of Broyles Rd & Hwy 99, on W side of Hwy 99 61 Comment
  CHSC45006  Lasthenia glaberrima Lowell Ahart 1979-5-25 1888 Butte On the edges of pond, west of the Western Pacific Railroad, about 2 air miles south of Palermo. 33 Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  RSA715476  Lasthenia glaberrima L. Ahart 2005-5-14 11810 Butte Peter Ahart Ranch, about 2 miles N and 0.25 mile E of Honcut, about 12 miles (air) SE of Oroville. 26 Comment
  CHSC30374  Lasthenia gracilis J. D. Jokerst 1979-3-9 1142 Butte Top of North Table Mt., 20 M N of Cherokee Rd where it intersects the E edge of the section. Comment
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Jan 19 2011
  CHSC66159  Lathyrus angulatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7652 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In weeds between the hiking trail and the S end of Tract 2, Sanctuary II. 33 Comment
  JEPS127072  Lathyrus angulatus Lowell Ahart 2016-5-30 20896 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC213342  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  RSA715575  Lathyrus jepsonii subsp. californicus L. Ahart 2005-4-14 11699 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC3297  Lathyrus latifolius Robert L. Smith 1966-4-19 30 Butte Honey Run Rd. 1 miles W. of Paradise, Calif. Comment
  SEINET12161676  Lathyrus nevadensis Unknown 1977-1 55 Butte ca 10yd to E sdie of Vilas Rd, ca .4miNE of jct of Cohasset Rd and Vilas rd, Cohasset. see comments 945 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  CHSC30389  Layia fremontii J. D. Jokerst 1980-4-17 600 Butte Top of North Table Mt. 419 Comment
  UC179640  Layia fremontii A. A. Heller 1914-3-28 11235 Butte 8 mi n Oroville Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC59579  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte About 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  HSC97027  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the S side of Sheldon Avenue at the intersection with Larkin Rd., ca. 1 mi. S of Gridley Rd., ca. 2 air mi. SE of Gridley. 28 Comment
  JEPS127248  Lemna minuta Lowell Ahart 2016-9-4 21341 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CAS-BOT-BC527299  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville Comment
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  CHSC106885  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC102408  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2009-6-19 15945 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  CHSC19949  Lepidium nitidum M. S. Taylor 1975-3-10 410 Butte Ca. 30 yds s of Covered Bridge on Butte Creek, ca. 8 mi e of Chico. Comment
  SEINET10907264  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 42 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC92547  Lepidium nitidum var. nitidum L. P. Janeway 2005-3-10 8348 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC33262  Lepidium pinnatifidum R. E. Preston 1981-6-19 95 Butte At roadside, 300 m w of Headquarters, Gray Lodge State Wildlife Area, ca. 13.5 km ssw of Gridley. 20 Comment
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  CHSC82413  Lepidium strictum Lowell Ahart 2002-5-7 9615 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC273956  Leptochloa fusca subsp. fascicularis Forman T. McLean 1921-11-25 29 Butte Nelson Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC226524  Leptosiphon acicularis Lowell Ahart 1971-4-21 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
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Jul 19 2018
  CHSC10557  Leptosiphon androsaceus Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC101312  Leptosiphon bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC40749  Leptosiphon filipes A. A. Heller 1938-6-14 15154 Butte 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  CHSC59335  Leptosiphon filipes J. L. Guardino 1992-4-16 8 Butte Paradise, 1/4 mi s of Circle Dr terminus. 472 Comment
  CHSC88080  Leptosiphon filipes R. D. Fischer 2004-3-28 165 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Disk Golf Course. 403 Comment
  CHSC113226  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CAS-BOT-BC341794  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  UC1287454  Lessingia virgata Willard Spence 1962-7-24 731 Butte along alternate Rt. 40 4 mi s Oroville Comment
  CHSC10792  Lewisia rediviva Lowell Ahart 1968-3-17 Butte Table Mountain, Oroville. 243 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC33967  Ligusticum grayi M. S. Taylor; L. Ahart 1981-8-15 4191 A Butte S side of Coon Hollow Rd (26N74), 1.1 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City; 1676 Comment
  CHSC42592  Ligusticum grayi Vernon Oswald 1985-8-4 1922 Butte Scotts John Rd. 0.9 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  JEPS117524  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  SEINET10971606  Lilium kelleyanum Mary Susan Taylor 1980-7-6 Taylor 3069 Butte T26N R4E ne sec 14, Butte Meadows quad; N side of Old Humboldt Rd, ca. 0.8 mi NE of Cherry Creek Campground, around spring which crosses road. With R.A. Schlising. 1463 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CAS-BOT-BC110626  Limnanthes alba Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC24944  Limnanthes alba M. L. McCrum 1976-4-26 18 Butte Ca. 6.0 mi sw of Cohasset on Cohasset Rd., .25 mi e on dirt rd. 365 Comment
  SEINET12183586  Limnanthes alba E. L. Knight 1988-1 16 Butte Small clustered population, ca 100 ft w of Ceanothus Road and ca 1 m n of East Avenue, in N. Chico 58 Comment
  JEPS103417  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  UCR224690  Limnanthes alba subsp. alba Dena Grossenbacher, Joel Smith 2009-5-9 986 Butte On south shore of Wyandotte Lake along Forbes Town Road, 2.0 miles east of Hwy 62 427 Comment
  UC971796  Limnanthes douglasii Herbert L. Mason 1941-4-6 12415 Butte hills w Cherokee Comment
  CHSC62831  Limnanthes douglasii subsp. rosea Ella Icard 1893-4-1 Butte Comment
  POM86189  Limnanthes douglasii subsp. rosea C. C. Bruce 1897-04 1910 Butte [No location information on label.] Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville Comment
  CHSC54010  Limnanthes floccosa subsp. californica Vernon H. Oswald 1991-3-30 4476 Butte Hwy 149, 0.9 mi northwest of Hwy 70 at Wicks Corner, ca. 7 mi northwest of Oroville. In drainage on top of road cut on the south side of the highway. 80 Comment
  CHSC41228  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1985-3-30 2188 Butte N. edge of county, plants scattered throughout this quarter section and N. into Tehama Co. 121 Comment
  HSC97048  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte Rice Experiment Station, between the Main Ditch and Stine Lateral, N side of Hamilton Rd., 0.25 mi. E of Riceton Rd. 29 Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  CHSC114380  Limnophila X ludoviciana Cass 2012-10-31 Butte Nelson; Aguas Frias Road and Nelson Road. Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  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
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  JEPS120027  Lindernia dubia Lowell Ahart 2012-10-20 18512 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD123914  Lindernia dubia Bill B. Fischer 1977-8-23 s.n. Butte Biggs Rice Experiment Station. Comment
  JEPS97415  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte 11/2 mi N and 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  CHSC2391  Linum bienne R. Carter 1965-5-19 213 Butte Found 7 mi. E of Oroville, along N side Feathervale Ave., 20' from intersection with Wyandott-LaPort Rd. 274 Comment
  SEINET9797295 Image available Lipocarpha aristulata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC26769  Liquidambar styraciflua P. Moyer 1971-10-1 17 Butte CSUC campus. Along So-wil-len-no Ave. 60 Comment
  RSA712647  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  CHSC62459  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Plumas National Forest. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees Road; ca 1.25 mi northeast of Coyote Gap. 1463 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
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  SBBG17379  Lithophragma parviflorum M. Vincent 1961-3-28 15 Butte overlooking Butte Crk; Skyway, 4 mi W of Paradise on rd to Chico 609 Comment
  CHSC92562  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC4426  Lolium multiflorum 1966-5-21 Butte Upper Bidwell Park, near Bare Hole, Chico. Comment
  CHSC6662  Lolium multiflorum Marilyn Lee 1968-3-15 112 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. Comment
  CHSC94679  Lolium multiflorum Lowell Ahart 2006-9-28 13382 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS88228  Lolium multiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7734 Butte U.S. Fish and Wildlife Service parcel btw 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary, Sacramento River Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge 28 Comment
  CHSC3873  Lomatium Susan Carrauthers 1966-3-14 56 Butte Ca. 4 mi. N.W. of city of Chico on Highway 32. Next to Lindo Channel. Comment
  CHSC38151  Lomatium caruifolium var. denticulatum J. D. Jokerst 1983-5-12 1763 Butte Table Mountain. Top of North Table Mt. Comment
  JEPS119608  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  RSA713002  Lomatium marginatum L. Ahart 2006-5-8 12606 Butte North of Phantom Falls ,about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles north of Oroville 384 Comment
  UCD80001  Lomatium marginatum CNPS SN Foothill Team 2006-5-23 SNNR 0784 Butte BLM Parcels near Paradise. 648 Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 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
  CHSC1963  Lomatium utriculatum E. Canfield 1904-4-7 Butte Hooker Oak field. 76 Comment
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  RSA0118763  Lonicera hispidula Lawrence P. Janeway 2014-5-29 11276 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
  UCD80204  Lonicera interrupta CNPS SN Foothill Team 2005-5-5 SNFN 0158 b Butte City of Chico, Upper Bidwell Park, Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CHSC44393  Lotus corniculatus Lowell Ahart 1988-6-21 6047 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 Comment
  JEPS117542  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  UC866486  Lotus nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows 1402 Comment
  SEINET10452002  Lotus purshianus Mary Susan Taylor 1979-8-4 Taylor 2171 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  RSA754821  Lotus purshianus var. purshianus L. Ahart 2009-6-19 15930 Butte N side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 380 Comment
  UC862220  Lotus purshianus var. purshianus A. A. Heller 1938-7-20 15289 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  POM253436  Lotus unifoliolatus A. H. Heller 1938-7-20 15289 Butte 7 miles east of Chaparral. 1524 Comment
  RSA406268  Lotus unifoliolatus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC71185  Ludwigia palustris Lowell Ahart 1998-6-30 8013 Butte In a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC35656  Lunaria annua R. E. Preston 1982-4-20 243 Butte N bank of Chico Creek, ca. 100 yds w of Warner St bridge, Chico. Comment
  CHSC35676  Lunaria annua R. E. Preston 1982-5-12 280 Butte Bidwell Park, ca. 10 m s of S. Park Drive, ca. 0.4 km e of Hwy 99, Chico. Comment
  CHSC84888  Lupinus affinis R. D. Fischer; Jenny Marr 2003-4-29 4 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  CHSC65560  Lupinus albicaulis L. P. Janeway 1995-6-6 4771 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
  CHSC113654  Lupinus albicaulis var. albicaulis L. P. Janeway 2014-5-29 11277 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
  CHSC33728  Lupinus albifrons M. S. Taylor 1981-4-5 3480 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  SEINET10870639  Lupinus albifrons var. albifrons Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7041 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine 701 Comment
  SEINET10484602  Lupinus apertus Haas 1983-9-8 HAAS UMO 173488 Butte On mcrae ridge w of plumas-eureka state park. Study by plumas nat for botanist Comment
  SD2382  Lupinus aridus E. B. Copeland 1929-7-17 377 Butte Above Jonesville, on very porous soil in full sun 2000 Comment
  CHSC90494  Lupinus bicolor Stacy Scott 1981-4-24 6 Butte About 1.3 km north of Eaton Road, 100 m east of Cohasset Hwy along Sheep (Grizzly) Hollow; about 7 km north-northeast of Chico. 190 Comment
  CHSC90515  Lupinus bicolor Michael D. Mayes 1983-4-19 16 Butte Ca. 6 mi ese Chico s side of Butte Creek, 75 yds w of Covered Bridge. 152 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 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
  CHSC91473  Lupinus grayi L. P. Janeway 2005-6-26 8437 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  SEINET10452086  Lupinus latifolius Lowell Ahart 1984-6-8 Ahart 4665 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC87796  Lupinus latifolius var. columbianus Paul Maslin 2004-4-6 12 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  CHSC84647  Lupinus microcarpus var. microcarpus Matt Quinn 2001-4-26 53 Butte Approximately 1500 feet east of Clark Road and 1/2 mile south of Fallager Creek. 85 Comment
  CHSC917  Lupinus microcarpus var. microcarpus D. Crummett 1937-6-2 Butte Sandy Gulch near Chico. 57 Comment
  RSA739693  Lupinus nanus John Dittes, Josephine Guardino 1991-4-19 339 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 14. Rock outcrop on plateau west of Cherokee Road near middle tributary of Campbell Creek at east end of Beatsons Hollow. 366 Comment
  CHSC38507  Lupinus nanus var. apricus Vernon Oswald 1983-3-23 203 Butte Upper Bidwell Park, Chico near the N boundary between the Omicron Enclosure and the low swale to the east. 88 Comment
  CHSC103001  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 209 Comment
  CHSC25003  Lupinus polyphyllus var. burkei E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  UCD109586  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CDA27576  Lupinus stiversii L. L. Heinrichs 1963-5-21 Butte Olive Highway, 5 miles from Oroville. 0 Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  SEINET10491010  Lupinus vallicola subsp. vallicola Taylor 1981-5-21 Taylor 3762 Butte Paradise se quad. S side of lake concow, ca. 5 Mi e of paradise. Associates: Viola lobata. 640 Comment
  RSA0069567  Lupinus vallicola var. apricus Daisie Huang 2006-8-3 06080304 Butte Butte County. 1124 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 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
  CAS-BOT-BC441203  Luzula macrantha Lowell Ahart 1975-3-23 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC441207  Luzula macrantha Lowell Ahart 1988-3-27 5940 Butte Aboaut 1/10 mile N of the bridge across the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 335 Comment
  RSA718305  Luzula parviflora L. P. Janeway 2006-8-6 8830 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC110451  Luzula subsessilis L. P. Janeway 2013-5-20 11113 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. 646 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 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
  CHSC109786  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC1191546  Lythrum hyssopifolia Herbert L. Mason, Verne Grant 1946-8-6 12973 Butte 2.7 mi n of colusa (between Sacramento River and Butte Creek, Butte Sink); Butte Sink Comment
  CHSC46975  Lythrum portula Vernon H. Oswald 1989-9-27 4019 Butte Paradise Lake ca. 3 mi n of Magalia. 774 Comment
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 0 Comment
  CDA5125  Lythrum salicaria L. Ahart 2000-7-18 8598 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  RSA0016015  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  HSC95490  Lythrum salicaria L. Ahart 1997-6-29 7742 Butte S side of Wyman Ravine, on W side of Lone Tree Rd., ca. 6 mi. S of Oroville. 37 Comment
  JEPS95946  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CAS-BOT-BC342643  Madia citrigracilis Vern Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga 512 Comment
  CHSC62529  Madia elegans subsp. elegans B. Castro; J. Jurewicz 1993-7-13 481 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 1 mi SW of the low-water crossing at confluence of French and Peavine Creeks. 615 Comment
  CHSC103957  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC116988  Madia exigua Lowell Ahart 2016-6-4 20936 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CAS-BOT-BC342966  Madia gracilis Lowell Ahart 1983-7-29 4232 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  SBBG28509  Madia gracilis E. B. Copeland 1931-8-14 Butte Jonesville 1500 Comment
  RSA302630  Madia gracilis subsp. gracilis J. R. Shevock 1972-5-19 1772 Butte 10 miles north of Lake Oroville, Highway 70 457 Comment
  CHSC6010  Magnolia grandiflora M. MacArthur 1968-6-19 251 Butte Front Lawn Administration Building, Chico State College. 60 Comment
  POM98246  Mahonia dictyota C. C. Bruce 1897-04 1818 Butte Big Chico Comment
  CDA14064  Malus sylvestris G. F. Hrusa, T. D. Wilfred 1997-5-1 13711 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CDA5025  Malva parviflora L. Ahart 2003-5-9 10122 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC109095  Malva parviflora Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  JEPS95294  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  CHSC28446  Marah macrocarpa Robert A. Schlising; R. Waaland 1965-3-27 2764 Butte Just north of city Gridley limits, junction of Gridley Road and unnamed dirt road running west. Comment
  CHSC63048  Marah watsonii Vernon H. Oswald 1994-4-14 6105 Butte Old railroad grade along the N. Fork Freather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  CDA42740  Marsilea T. C. Fuller 1958-4-15 4798 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC25479  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC726322  Medicago A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  CDA31966  Medicago lupulina L. 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. Comment
  SEINET10906952  Medicago lupulina Mary Susan Taylor 1975-6-25 Taylor 797 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  CDA13255  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13103 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC113424  Melica aristata Lowell Ahart 2014-7-7 19559 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS103561  Melica aristata Lowell Ahart 2002-6-21 9745 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  UC699616  Melica bulbosa E. B. Copeland 1944-7-6 Butte Butte Meadows; Sierra Nevada Comment
  CHSC101768  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC96858  Melica californica Lowell Ahart 2007-5-29 13924 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 1 1/4 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. 598 Comment
  UCD87014  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  UCD88607  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1500 Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  RSA31168  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  UCD89083  Melica torreyana August L. Hormay 1929-6-24 s.n. Butte East of Chico, Deer Creek, near Murphy. Comment
  CHSC5965  Melilotus albus M. MacArthur 1968-6-17 150 Butte SE side Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  SEINET10452218  Melilotus albus Mary Susan Taylor 1975-7-4 Taylor 830 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  CHSC111140  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  UC1191789  Mentha canadensis Herbert L. Mason and Verne Grant 1946-8-14 13032 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC96038  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CAS-BOT-BC428755  Micranthes californica Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC428758  Micranthes californica Mrs. C. C. Bruce 1898-2-1 2042 Butte Unspecified Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC24697  Micropus californicus var. californicus L. Casto 1976-4-28 20 Butte 50 yd s of Skyway, ca. 4 mi e of intersection of Hwy 99 and Skyway. 182 Comment
  UC1070012  Micropus californicus var. californicus C. G. Albertus 1933-7-6 25 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  UCD80105  Microseris acuminata CNPS SN Foothill Team 2005-3-30 SNFN 0071 Butte CDFG North Table Mountain Wildlife Area, approximately 2 mi. west of parking and 200-300 m north. 372 Comment
  CAS-BOT-BC348694  Microseris acuminata K. L. Chambers 1952-5-17 411 Butte 9.4 mi. s. of Forest Ranch P. O. on Hwy. 32 from Chico to Lake Almanor, west rim of Little Chico Creek Canyon Comment
  CAS-BOT-BC348704  Microseris acuminata J. D. Jokerst 1982-4-12 1524 A Butte West edge of Highway 149 3/10 mile north of Highway 70 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  CAS-BOT-BC322774  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC51046  Microseris sylvatica J. D. Jokerst 1985-4-16 1971 Butte Cherokee area east of Table Mt, south of Campbell Flat in my backyard. Comment
  CHSC54092  Microseris sylvatica Vernon H. Oswald; Lowell Ahart 1991-5-13 4588 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 121 Comment
  CHSC45354  Microsteris gracilis Vernon Oswald 1987-4-16 2332 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  SEINET178518  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville by Butte Cr 1500 Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 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
  POM219172  Mimulus breweri E. B. Copeland 1920-7-11 268 Butte S. Wats neighborhood of Jonesville, Scotch John Meadow Comment
  RSA183143  Mimulus breweri E. B. Copeland 1930-7-28 s.n. Butte Neighborhood of Jonesville, along So. Willow Creek 1829 Comment
  RSA178677  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale Grade about 5 miles from Paradise Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  SEINET12332655  Mimulus glaucescens Unknown 1977-1 17 Butte ca 25 ft N of Wildrose Rd, ca 8 mi N of Manzanita Ave, ca 1 mi N of Chico 70 Comment
  CHSC98977  Mimulus guttatus Lowell Ahart 2008-5-12 14737 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
  JEPS104638  Mimulus guttatus Lowell Ahart 2003-7-23 10438 Butte Around the margins of ponds, Oroville Wildlife Area, ca 1/4 mi w of Pacific Heights Rd, ca 5 mi (air) sw of Oroville. 26 Comment
  LA209359  Mimulus guttatus E. B. Copeland; 1929-7-28 sn Butte Jonesville 1500.0 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  RSA718738  Mimulus guttatus L. Ahart 2006-7-25 13063 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SFV3383  Mimulus kelloggii M. L. Vincent 1961-3-26 20 Butte Sierra Nevada Near Feather River Bridge. Nelson Bar Road, two miles east of Pentz Road. Southeast of Paradise. 430 Comment
  HSC85965  Mimulus kelloggii J. Hunter 1986-3-21 31 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  UC103727  Mimulus latidens Mrs. R. M. Austin 1890-1 164 Butte Little Chico Creek Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  UC103748  Mimulus torreyi Mrs. R. M. Austin July 1896 162 Butte Colby Comment
  RSA535457  Mimulus torreyi David M. Thompson 1986-6-26 548 Butte 0.5 mi from Hwy 32 along Humboldt Road (to Butte Meadows). 1159 Comment
  UC1562476  Mitella breweri Vernon Oswald and Lowell Ahart 1990-7-20 4302 Butte ca. 0.25 mi w Butte-Plumas county line (headwaters of creek, between Philbrook Reservoir and Carr Mine); Philbrook Creek 1889 Comment
  CHSC66289  Moehringia macrophylla Lowell Ahart 1996-6-5 7682 Butte On the east side of the river, about 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 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
  JEPS42874  Mollugo verticillata W. L. Jepson 1939-8-17 19459 Butte near Oroville (Feather River); Feather River 45 Comment
  UC204576  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte land 8 mi n of Oroville Comment
  CHSC51226  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along the edge of Swedes Flat Road, about 1/10 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  RSA718088  Monardella odoratissima subsp. glauca L. Ahart 2006-7-16 12960 Butte north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1436 Comment
  CHSC52231  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-16 3023 Butte Ca 1 mi SE on dirt rd that leaves Humbug Summit Rd at Willow Cr. 1950 Comment
  CHSC43024  Monardella sheltonii L. P. Janeway 1987-6-26 2303 Butte Above Camp Cr. 2.4 mi east of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
  CHSC52212  Monardella sheltonii L. P. Janeway 1988-7-2 2968 Butte Near the road to French Cr 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC67986  Monardella sheltonii James D. Jokerst 1989-7-3 3123 Butte Hwy. 70 3.6 mi E of Pulga turnoff. Comment
  JEPS115268  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 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
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  JEPS62419  Monardella villosa subsp. villosa W. I. Follett 1937-6-25 95 Butte 4.7 mi north Bidwell Bar (on the old Oroville-Quincy highway) 335 Comment
  JEPS119542  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  CHSC94589  Muhlenbergia andina Lowell Ahart 2006-9-11 13306 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
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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Jun 20 2012
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  CAS-BOT-BC260530  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC103439  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UC1563268  Muhlenbergia filiformis unknown 1990-10-21 6636 Butte about 1/2 mi w Gold Flat (1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  CAS-BOT-BC275343  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River 53 Comment
  CHSC38084  Muhlenbergia minutissima R. E. Preston 1982-8-25 360 Butte At margin of lakelet; S of Coon Hollow. 1755 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  CHSC32131  Myosurus minimus L. Ahart 1974-4-28 446 Butte In rice field, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  SEINET10899320  Myosurus minimus var. filiformis Mary Susan Taylor 1980-3-28 Taylor 2398 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  CHSC38886  Najas gracillima Vernon Oswald 1983-7-21 893 Butte Upper Bidwell Park, Chico, along the n edge of Horseshoe Lake. 100 Comment
  UC1586518  Najas graminea Lowell Ahart 1991-9-14 6723 Butte About 2 miles east of Honcut, Joie Osgood Ranch. 45 Comment
  SEINET3890285  Najas graminea Herbert L. Mason, Verne E. Grant 1946-8-15 13047 Butte Near caretaker's house, Greylodge Game Refuge.; 0 Comment
  JEPS105275  Narthecium californicum Dean W. Taylor 1995-8-6 15391 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 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
  CHSC11950  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville. 1550 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
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  JEPS120502  Navarretia filicaulis B. Castro, L. P. Janeway 2004-6-13 1469 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  LA206699  Navarretia filicaulis H. F. Copeland; 1932-6-24 sn Butte near Hog Springs, about 5 mi. N of Chico, on the Humboldt Road Comment
  CHSC44338  Navarretia heterandra Lowell Ahart 1988-5-5 5981 Butte In pasture fields, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC55393  Navarretia intertexta L. P. Janeway 1991-6-8 3999 Butte Upper reach of Spring Hollow (between Montgomery Bar Ravine and Oregon Gulch). On dirt road adjacent to spring. 365 Comment
  CHSC23857  Navarretia leucocephala Glenda Foster 1975-5-10 99 Butte In vernal pool at the roadside at the intersection of Highway 99 and Broyles Road. Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  UC518029  Navarretia tagetina Lewis S. Rose 1933-5-27 33187 Butte Honcut 32 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
  SEINET3156476  Nemophila exilis H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC42000  Nemophila heterophylla Lowell Ahart 1973-4-15 206 Butte Along Swedes Flat road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  RSA754791  Nemophila heterophylla L. Ahart 2009-4-26 15641 Butte South side of Guardians Trail, about 30 yards SW of Pine Trail, Upper Bidwell Park, about 3/8 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  CHSC38460  Nemophila menziesii var. menziesii Vernon Oswald 1983-3-14 179 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.75 mi e of the power lines. 297 Comment
  CHSC103670  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  RSA769605  Nemophila pedunculata L. Ahart, John Dittes 2009-3-20 15499 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk 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
  SEINET8395638  Nemophila pedunculata A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  CHSC11970  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville. 1650 Comment
  CHSC6627  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  SEINET13711422  Nicotiana acuminata Lowell William Ahart, Lowell William Ahart 1999-1 8135 Butte 12 Mi. SW of Chico, 2 Mi. SE Ordbend, Sacramento River Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SBBG57427  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi N of Chico on the Richardson Springs rd Comment
  CHSC62624  Oemleria cerasiformis Vernon H. Oswald; Lowell Ahart 1994-5-27 5959 Butte 0.66 miles W of Cherokee Rd. Jeep trail in Beaston Hollow on N. Table Mtn., W side of Cherokee Rd., N of Oroville. In the bottom of the hollow. 304 Comment
  CHSC6625  Oenothera M. MacArthur 1968-6-17 319 Butte NE side of Building T, Chico State College campus. 60 Comment
  RSA0059256  Orobanche californica subsp. grayana Herbert F. Copeland 1928-8-29 1019 Butte Jonesville. Comment
  CHSC1167  Orobanche fasciculata V. Holt 1935-5-26 Butte Humboldt Road. Comment
  CHSC113486  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA31738  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  RSA4168  Orthocarpus hispidus E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  SEINET12326989  Orthocarpus purpurascens Unknown 1984-1 2 Butte ca 5 mi E of Hwy 99, jct of Honey Run & Humbug Rds, SE side of road 107 Comment
  SEINET10935052  Oryza sativa Lowell Ahart 1984-9-17 Ahart 4793 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CHSC25254  Osmorhiza chilensis M. S. Taylor 1977-6-26 1378 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 609 Comment
  SEINET10454516  Osmorhiza chilensis Mary Susan Taylor 1978-7-19 Taylor 1733 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10840954  Osmorhiza chilensis Mary Susan Taylor 1977-6-25 Taylor 1378 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC31393  Oxalis corniculata J. D. Jokerst 1979-4-13 1192 Butte Top of North Table Mt., ca. 200 met N of the intersection of Cherokee Rd and the E edge of the mountain. Adjacent to vernal creek. 396 Comment
  CHSC3541  Oxalis pes-caprae John Francis 1966-3-19 69 Butte On hillside S. of covered bridge, Honey Run. Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CAS-BOT-BC316887  Packera eurycephala var. lewisrosei A. Heller 1938-5-28 15115 Butte 23 miles from Oroville on Highway 24. Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  UCD88205  Panicum acuminatum var. fasciculatum E. G. Cakin 1947-5-30 s.n. Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC253698  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  JEPS76249  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  CHSC31686  Panicum dichotomiflorum L. Ahart 1978-8-30 1803 Butte Along the edge of rice field. Peter Ahart Ranch, Honcut. 50 Comment
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  JEPS98570  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 A Butte 5 mi(air)E of;in a meadow on bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  CHSC38839  Paspalum dilatatum Vernon Oswald 1983-6-3 630 Butte Upper Bidwell Park, Chico, on the side of the access road on the w bank of the diversion channel near Lindo Channel. 83 Comment
  SEINET191202 Image available Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  CHSC38840  Paspalum distichum Vernon Oswald 1983-6-27 776 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC63242  Pectocarya pusilla Lowell Ahart 1994-4-22 7285 Butte In a small meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  JEPS117133  Pectocarya pusilla Lowell Ahart 2010-5-7 16615 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
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  UCR133597  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC32661  Pedicularis densiflora M. S. Taylor; L. Hanson 1981-3-8 3402 Butte On s side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. 1005 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET11718082  Pellaea andromedifolia J. D. Mott 1978-1 16 Butte Upper Miocene Canal 448 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  CHSC31534  Pellaea mucronata L. Ahart 1976-4-7 1037 Butte Around rocks along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39615  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte On the east side of Woodleaf Creek, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC58  Pellaea mucronata V. Holt 1935-3-17 Butte Salmon Hole on Chico Creek. 550 Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  SEINET10547579  Penstemon azureus var. azureus Lowell Ahart 1985-5-15 Ahart 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC10693  Penstemon breviflorus subsp. glabrisepalus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  CHSC105203  Penstemon neotericus B. Castro; L. P. Janeway 1999-8-1 1023 Butte NE slope of Snow Mtn, ca 0.3 mi NNE of top, and ca 0.5 mi SE of Summit Lake. 2017 Comment
  NY627284  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  CHSC43130  Penstemon personatus R. Banchero; R. Schlising 1981-7-19 609 Butte 1 mi e of Bald Mt lookout tower on Bald Mt. 1780 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 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
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC34242  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-7 3629 A Butte N side of Ponderosa Way, 0.6 mi n of Ponderosa Dam, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC97157  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  RSA769682  Pentagramma triangularis subsp. triangularis L. Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  UC1390032  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5986 Butte 2 mi e Oroville 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
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CAS-BOT-BC418859  Persicaria hydropiperoides Lowell Ahart 1982-10-6 3847 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC34133  Persicaria maculosa L. Ahart 1981-9-19 3189 Butte On edges of a pond ca. 100 m n of Cresta Powerhouse, and a little e of Feather River along hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC38691  Persicaria maculosa Vernon Oswald 1983-5-8 452 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  CHSC98957  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UCR237312  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18763 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10546870  Phacelia Mary Susan Taylor 1978-6-24 Taylor 1641 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC52345  Phacelia distans J. D. Jokerst 1986-4-23 2264 Butte Top of north Table Mountain, N of Cherokee at the second drainage entering Beatson Hollow. 365 Comment
  RSA4128  Phacelia mutabilis E. B. Copeland 1930-7-13 s.n. Butte Jonesville. 1550 Comment
  POM193436  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Near Butte Creek, Jonesville. 1550 Comment
  SEINET10497028  Phacelia racemosa Lowell Ahart 1985-7-16 Ahart 5146 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 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
  CAS-BOT-BC265889  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC77377  Philadelphus lewisii Lewis S. Rose 1940-5-30 40423 Butte Feather River Canyon, 25 mi. ne. of Oroville 609 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
  UC1609449  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  RSA0057769  Philadelphus lewisii Jim R. Shevock 1972-5-19 1779 Butte Hwy 70, Feather River Canyon. 610 Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  CAS-BOT-BC250866  Phleum pratense Lowell Ahart 1987-7-8 5795 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC43205  Phleum pratense Robert Banchero 1981-7-19 612 Butte Big Crane Valley. Meadow. 1584 Comment
  UC600674  Phlox austromontana H. F. Copeland 1920-8-8 Butte Jonesville Comment
  CHSC93966  Phlox diffusa R. D. Fischer 2004-6-20 748 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  CAS-BOT-BC134916  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magalia. Sierra Nevada 731 Comment
  CAS-BOT-BC135129  Phoradendron juniperinum Lowell Ahart 1985-9-18 5169 Butte 2 miles W of Sly Creek Res. Tree was on lava soil on a lava cap, about 2 miles W of Sly Creek reservoir. E of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  SEINET10492814  Phoradendron juniperinum var. libocedri Mary Susan Taylor 1976-2-22 Taylor 997 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC51930  Physalis lancifolia L. P. Janeway 1986-9-20 1887 Butte Inside the bend at the jct of Chico-Butte City Hwy and Road 48. 28 Comment
  CHSC36431  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte E of Paradise at Concow Reservoir. Roadside. Comment
  CHSC105954  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  UCD136789  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte In Valley Grassland just E of Chico. NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 68 Comment
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  UC813301  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  JEPS115635  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 259 Comment
  JEPS95141  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Clear Creek, s of the hay barn, Butte Junior College Clear Creek; , Butte Junior College 76 Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10529829  Pityrogramma triangularis Mary Susan Taylor 1980-7-20 Taylor 3190 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  SEINET10529830  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2316 A 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
  JEPS107766  Plagiobothrys austiniae Lowell Ahart 2005-5-11 11809 Butte Margins of vernal pools, about 300 yards southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 359 Comment
  CHSC101285  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS21223  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte hills 8 mi n Oroville Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, 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
  CHSC46777  Plagiobothrys glyptocarpus Lowell Ahart 1977-5-8 1363 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC117346  Plagiobothrys glyptocarpus var. glyptocarpus B. Castro; L. P. Janeway 2014-4-4 2003 Butte Northern Sierra Nevada Foothills. On North Table Mountain, ca 5.5 air mi N of Oroville, 100 ft N of the main parking area just W of Cherokee Rd on the table top; ca 200 ft NE of the large lone oak tree by the parking lot. 406 Comment
  CHSC25484  Plagiobothrys greenei L. Ahart 1977-4-15 1297 Butte Found in the bottom of swales and vernal pools. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28480  Plagiobothrys greenei R. A. Schlising 1979-4-15 3363 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UC480661  Plagiobothrys hispidulus H. F. Copeland 1930-6-10 Butte Jonesville 1524 Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC39030  Plagiobothrys scriptus R. A. Schlising 1983-4-15 4403 Butte Cohasset Ridge, just sw of village of Cohasset and e of Maple Branch of Mud Creek. Dirt road. 536 Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  UC179610  Plagiobothrys stipitatus A. A. Heller 1914-5-30 11470 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC65896  Plagiobothrys stipitatus var. micranthus Vernon H. Oswald 1996-4-20 7407 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC87205  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  SEINET10497616  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 A Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC28590  Plagiobothrys tenellus M. S. Taylor 1974-3-3 68 Butte On Burton's Mesa, ca. 3 mi e of Chico on the Skyway to Paradise. 60 Comment
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  SEINET10499838  Plantago bigelovii Lowell Ahart 1983-4-10 Ahart 3919 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC26726  Plantago elongata M. S. Taylor 1978-4-14 1550 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
  UCSC008612  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  CHSC24157  Plantago erecta B. Bunge 1976-4-22 20 Butte Ca 100 yds s of Skyway, ca 8 mi ese of Chico. 259 Comment
  CHSC41133  Plantago erecta B. Anthony 1967-4-9 43 Butte Bare Hole, along Yahi Trail, Bidwell Park, Chico. 1828 Comment
  SBBG128463  Plantago erecta L. Ahart 2012-4-9 17851 Butte N side of S Rim Trail, W of the power lines, Upper Bidwell Park, ca. 1 mi NE of Chico 143 Comment
  SEINET10499849  Plantago erecta Mary Susan Taylor 1981-4-21 Taylor 3549 Butte T23N R4E sw sec 36, Pulga SW quad. Serpentine, S side of Concow Rd, on ridge, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 2 mi N of Lake Concow, ca. 20 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC66165  Plantago lanceolata Vernon Oswald; Lowell Ahart 1996-5-27 7666 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. Scattered plants in the formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS88267  Plantago lanceolata Vernon H. Oswald and Lowell Ahart 1996-5-27 7666 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. Sacramento R. Nat'l Wildlife Refuge (in the s. paddock of Tract 7, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  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
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CHSC3808  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Along road bank 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC40046  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte On the road to golf links near Chico. In the Quercus lobata belt Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  SEINET10938875  Plectritis ciliosa Mary Susan Taylor 1980-4-16 Taylor 2488 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CDA2388  Poa annua L. Ahart 2003-3-31 10031 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC8573  Poa annua J. G. Moore 1969-5-7 22 Butte Salem St. between 7th and 8th Sts. on e side of road, Chico. 60 Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 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
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC51377  Poa compressa Vernon Oswald 1990-9-11 4447 Butte Pond located ca. 1 mile south of Brush Creek. On a path on the south side of the pond. 990 Comment
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  UC1594539  Poa compressa Lowell Ahart 1992-8-2 6897 Butte cxa 3 air mi ne Concow Reservoir (in Concow Medow, along Concow Creek) 1097 Comment
  RSA0116255  Poa palustris Lowell A. Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Hymbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC64262  Poa pratensis S. C. Morey 1983-8-1 652 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC111401  Poa pratensis subsp. pratensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey. 2012-6-28 18240 Butte About 1/3 of a clump, on wet good soil, on the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 61 Comment
  CAS-BOT-BC255234  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  UC478556  Poa pringlei E. B. Copeland 1931-6-22 606 Butte the Summit Jonesville 2000 Comment
  JEPS117717  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  UC196319  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Comment
  UC1988910  Pogogyne douglasii Robert F. Hoover 1936-5-20 1155 Butte ten miles southwest of Oroville Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 Comment
  CHSC101687  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
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  UC1564727  Polygonum aviculare subsp. aviculare V. Oswald and L. Ahart 1989-7-21 3870 Butte junction of Willow Creek and Colby Creek (on n side of Humbold Rd ca 1 mi w of Jonesville, w side of Colby Creek) 1487 Comment
  CDA43082  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-2 10780 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  CAS-BOT-BC109142  Polygonum bidwelliae Clare B. Hardham 1974-5-24 20 -150 Butte North of Penty-Line Ridge north of Oroville. Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 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
  CHSC45374  Polygonum bidwelliae Vernon Oswald 1986-5-7 2002 Butte Upper Bidwell Park, Chico, on the north rim near the Rifle Range ravine. 182 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 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
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CHSC71187  Polygonum californicum Lowell Ahart 1998-6-9 7982 Butte On dry dark rocky bare basalt, west of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  POM161664  Polygonum davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  JEPS110392  Polygonum douglasii subsp. douglasii Lowell Ahart 2006-8-15 13189 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  CAS-BOT-BC109252  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UCD90975  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 miles north of Oroville Comment
  JEPS107328  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA715468  Polypogon interruptus L. Ahart 2005-5-2 11779 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  CDA2355  Polypogon maritimus L. Ahart 1998-7-1 8028 Butte 20 yards south of an east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC39300  Polystichum imbricans Lowell Ahart 1983-7-24 4213 Butte At the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC34678  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC4145  Polystichum munitum R. Carter 1966-6-26 463 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC20257  Populus fremontii G. S. Ellmore 1972-4-28 175 Butte Big Chico Creek ca. 1.2 km. E of Five Mile Pool. Comment
  SEINET10539164  Populus tremuloides Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4189 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
  CHSC49685  Potamogeton crispus Vernon Oswald 1987-8-2 3173 Butte Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  CHSC49687  Potamogeton natans Vernon Oswald 1987-4-30 2359 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In several ponds. 80 Comment
  CHSC46885  Potamogeton pectinatus Vernon H. Oswald 1989-9-4 3977 Butte Wurlitzer Unit, Vina Plains Preserve. In the farm pond. 56 Comment
  SEINET10871296  Potentilla glandulosa Mary Susan Taylor 1978-7-18 Taylor 1680 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC93978  Potentilla glandulosa subsp. ashlandica R. D. Fischer 2004-6-20 774 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. At north end of Chico Meadows, along the meadow edge. 1371 Comment
  SEINET11906804  Potentilla glandulosa var. nevadensis L. S. Rose 1939-1 39234 Butte Strawbery Valley, 1219 Comment
  JEPS117310  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC158499  Potentilla millefolia Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  JEPS47186  Potentilla rivalis W. L. Jepson 1939-8-17 19455 Butte near Oroville; Feather River, near Oroville 45 Comment
  CHSC29397  Poterium sanguisorba R. A. Schlising; R. Banchero 1980-6-17 3738 Butte N of Magalia, along Coutelenc Road, 0.7 mi S of jct with Skyway at Lovelock. In meadow. 902 Comment
  UCSC000640  Prunella vulgaris subsp. lanceolata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC27213  Prunus caroliniana P. Moyer 1972-4-9 162 Butte CSUC Campus. Off path to camillia stand, n side of Chico Creek. 60 Comment
  CAS-BOT-BC159919  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CAS-BOT-BC159921  Prunus emarginata A. A. Heller 1928-6-28 14618 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC159922  Prunus emarginata H. F. Copeland 1920-7-8 42 Butte On summit divide between Butte, Plumas and Tehama Co's 1828 Comment
  CAS-BOT-BC159929  Prunus emarginata A. A. Heller 1915-6-11 11962 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  CHSC94091  Prunus subcordata R. Fischer 2005-3-20 682 Butte Chico. Collected from Bidwell Park off of Pine Trail ca. 1/4 mi downhill from hwy 32. Shrubs growing on brushy north facing slope with an overstory of Big Leaved Maple. 426 Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC69713  Pseudognaphalium luteoalbum Lowell Ahart 1997-10-20 7922 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CAS-BOT-BC357589  Pseudognaphalium stramineum Lowell Ahart 1980-5-4 2184 Butte Thermalito 65 Comment
  CHSC46923  Pseudognaphalium thermale Lowell Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat Road, about 1 1/2 miles east of the Bangor Oroville, Highway, near Bangor. 304 Comment
  SEINET11739303  Pseudotsuga menziesii Unknown 1982-1 1 Butte 50 m W of Coultolenic Road, 150 m E of Skyway, 0.5 km N of Magalia 700 Comment
  CHSC82429  Psilocarphus tenellus var. globiferus Lowell Ahart 2002-5-7 9612 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC38348  Psilocarphus tenellus var. tenellus Vernon Oswald 1983-4-25 379 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Near a jeep trail. 359 Comment
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC90241  Pterostegia drymarioides Michael J. McNairn 1989-4-22 17 Butte At the base of rocks along Yahi trail above Salmon Hole. Bidwell Park. Ca. 3 mi. e of 5-mile swimming area, ne Chico. 106 Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  CHSC12607  Punica granatum S. Posner 1972-9-20 Butte Ca. 20 ft. w of Nord Ave, ca. 1/4 mi n of First St, Chico. Comment
  SEINET10452826  Punica granatum Mary Susan Taylor Taylor 779 Butte Weedy or cultivated plants of Chico. 61 Comment
  CDA13242  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-8 13089 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10449204  Pyrola picta f. aphylla Mary Susan Taylor 1977-6-25 Taylor 1387 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10874403  Pyrola picta subsp. integra Mary Susan Taylor 1980-8-2 Taylor 3215 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC2806  Quercus Carl Pejsa 1958-3-15 99 Butte Bidwell Park Forestry Station. Comment
  HSC104019  Quercus X morehus L. Ahart 2012-3-23 17799 Butte About 5 air mi. NE of Chico, ~ 50 yds. W of Hwy. 32; on the south side of the Old Humboldt Road cut, north end of the Disc Golf Area 395 Comment
  UC847952  Quercus berberidifolia A. A. Heller 1916-9-8 12649 Butte e of Chico (Ten Mile House) Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  JEPS95870  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; 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
  CAS-BOT-BC86635  Quercus douglasii Lowell Ahart 1981-7-7 2919 Butte About 0.5 mi W of the Oroville Forbestown Road on the Black Bart Road, W of Forbestown 700 Comment
  CHSC96361  Quercus garryana var. breweri L. P. Janeway; B. Castro 2007-5-6 8976 Butte Northern High Sierra Nevada. Slopes above the east side of West Branch Feather River; along Jordan Hill Road 1.0 km north-northeast of the bridge crossing; 1.9 air km north-northwest of Sawmill Peak. 555 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
  CAS-BOT-BC61582  Quercus lobata G. P. Rixford 1912-10-1 s.n. Butte Bidwell Ranch, Chico Comment
  JEPS107327  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  CAS-BOT-BC104694  Quercus wislizeni E. B. Copeland 1899-5-28 s.n. Butte unspecified Comment
  CHSC30862  Quercus wislizeni J. D. Jokerst 1979-3-23 1160 Butte Occasional in the shaded portions of drainage ravines leading off the W edge of Mt. Top of North Table Mt., W edge of Mt immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
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Jan 19 2011
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- Ranch. Comment
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  CDA19813  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  POM98907  Ranunculus aquatilis var. capillaceus C. C. Bruce 1897-04 1892 Butte [No location data on label] Comment
  UCD95868  Ranunculus aquatilis var. diffusus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte in and along West Branch Feather River, 3.4 miles SW of Snag Lake, ca. 11 miles NE of Stirling City. 1615 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte On the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  UC1442628  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 Butte Peter Ahart Ranch Honcut 45 Comment
  CHSC38160  Ranunculus canus Vernon Oswald 1983-3-26 206 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.7 mi e of the power lines. 286 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  JEPS98680  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  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
  CHSC54389  Raphanus raphanistrum M. Bailey 1991-3-8 649 Butte North side of Butte Campus Drive, across from the Fire Training facility, Butte College Campus. Roadside. 76 Comment
  CAS-BOT-BC59570  Rhamnus John Thomas Howell 1975-6-15 51118 Butte Sierra Nevada - Paradise - Skyway near Billie Road 609 Comment
  CHSC1529  Rhamnus ilicifolia M. Roberson 1956-4-16 Butte SW. Paradise, along Skyway. 426 Comment
  JEPS95615  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3 1/2 mi SW of Forbestown (S of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET5569772  Rhamnus rubra H. S. Gentry, S. Koch 1962-1 19761 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  CHSC33942  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-6-19 3963 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, on serpentine, ca. 1/4 mi ca. 20 mi ne of Oroville. 487 Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  CAS-BOT-BC168126  Rhus aromatica Mrs. C. C. Bruce 1897-1-1 1819 Butte Chico Comment
  CHSC24683  Rhus aromatica D. Hattem 1976-4-10 5 Butte Ca. 50 m ne of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC51844  Rhus aromatica Steven Triano 1987-4-7 37 Butte Ca 20 ft S of Honey Run Rd ca 2.7 mi E of The Skyway, out of SE Chico. 91 Comment
  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
  SD2128  Ribes cereum E. B. Copeland 1931-6-11 Butte Jonesville. In the open, Kirby's Meadow. 1800 Comment
  CHSC33898  Ribes nevadense M. S. Taylor 1981-4-14 3532 Butte S side of Ponderosa Way, ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  CHSC101655  Robinia pseudoacacia Lowell Ahart 2009-4-26 15609 Butte About 10 miles northeast of Chico, Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road. 461 Comment
  CHSC115427  Robinia pseudoacacia Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  JEPS119786  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC90654  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. 54 Comment
  JEPS53826  Rorippa W. L. Jepson 1927-6-25 12356 Butte Biggs 30 Comment
  JEPS120612  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC31640  Rorippa nasturtium-aquaticum L. Ahart 1977-5-8 1356 Butte On the bottom of a wash, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CHSC38649  Rosa californica Vernon Oswald 1983-6-2 600 Butte Upper Bidwell Park, Chico, near the east boundary of the park. On the bank of Chico Creek. 207 Comment
  JEPS115697  Rosa californica Lowell Ahart 2009-6-19 15942 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CHSC78098  Rosa canina Shelly Pirtle 1997-4-9 29 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek; Field 19-20. Near Butte Creek. Comment
  UCD40393  Rosa gymnocarpa Rodney Gale Myatt 1971-6-13 718 Butte 1 mile north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC99317  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte Small meadow, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC5958  Rosmarinus officinalis M. MacArthur 1968-6-17 196 Butte N corner of Administration bld., Chico State College campus. 60 Comment
  SEINET10498793  Rosmarinus officinalis Mary Susan Taylor Taylor 449 Butte Campus of the California State University, Chico. 61 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  JEPS98345  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  CHSC42719  Rubus armeniacus Lowell Ahart 1987-6-9 5736 Butte 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. 274 Comment
  CAS-BOT-BC156611  Rubus bifrons M. S. Taylor 1982-5-22 4506 A Butte Graylodge Waterfowl Refuse, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CAS-BOT-BC156612  Rubus bifrons Lowell Ahart 1982-9-29 3835 Butte Near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley 1100 Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CDA42870  Rubus ursinus L. Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 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
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CAS-BOT-BC421908  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte 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
  CHSC116294  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte On west side of Feather River, about half way of and east of ne Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC25289  Rumex obtusifolius subsp. agrestis M. S. Taylor 1977-7-15 1420 Butte Scattered along w branch of Feather River, ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC28002  Rumex obtusifolius subsp. agrestis M. S. Taylor 1978-7-21 1824 Butte On s side of Oroville-Quincy Hwy by creek, ca. 14 mi n of Lake Madrone. 914 Comment
  CHSC58271  Rumex salicifolius var. triangulivalvis Lowell Ahart 1992-5-9 6768 Butte On the bottom of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 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
  CHSC87191  Sagina apetala Lowell Ahart 2004-4-4 10720 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC98975  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
  UC600587  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte above Jonesville; above Jonesville 1700 Comment
  CHSC51375  Sagittaria latifolia Vernon Oswald; Mary Bailey 1990-8-23 4442 Butte Durham Mutual Ditch just south of Butte Creek, ca. 0.25 mi north of Hwy 99 in south Chico. 67 Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  CHSC111971  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the north side of the creek, on the bottom of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 280 Comment
  CDA38813  Salix gooddingii L. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS122276  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC104074  Salix 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
  CAS-BOT-BC106936  Salix laevigata Lowell Ahart 1987-5-22 5684 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CAS-BOT-BC106984  Salix lasiolepis Lowell Ahart 1987-4-30 5492 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  HSC104023  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte About 9 air mi. NE of Chico, ~ 5/8 mi. W of Hwy. 32, edges of the pond at the old homestead 259 Comment
  JEPS119607  Salix lasiolepis Lowell Ahart 2012-4-9 17831 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129587  Salix lasiolepis var. lasiolepis Lowell Ahart 1982-5-8 3408 Butte Near the Forbestown Res, about 1 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 800 Comment
  CAS-BOT-BC129506  Salix melanopsis C. C., Mrs. Bruce 1897-6-1 1806 Butte Gen. Bidwell's Comment
  POM107064  Salix melanopsis C. C. Bruce 1806 Butte Chico. Butte Creek. Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC26719  Salsola tragus Hayes 1977-10-23 142 Butte In Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  CHSC81481  Sambucus mexicana Sabrina Wright; Alvin Myers 2000-5-7 Butte Chico. Upper Bidwell Park on Arena Rd. 60 Comment
  UC102282  Sambucus mexicana Mrs. R. M. Austin 1896-7 612 Butte Colby Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  CHSC46078  Sanicula bipinnata Lowell Ahart 1989-3-25 6200 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 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
  CHSC10638  Sanicula bipinnatifida Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  POM219522  Sanicula graveolens E. B. Copeland 1931-6-22 s.n. Butte Jonesville, on ridge west of Jones Creek. 2100 Comment
  CHSC103977  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 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
  CHSC7052  Sanicula tuberosa F. Kimball 1969-4-15 43 Butte 100 yds. w of Foster Rd., 1.5 mi s of Skyway. Paradise. 396 Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  SD3415  Sanicula tuberosa E. B. Copeland 1929-7-20 Butte Jonesville 1550 Comment
  SEINET10454587  Sanicula tuberosa Mary Susan Taylor 1981-3-16 Taylor 3414 A Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC43660  Sapium sebiferum Vernon Oswald 1987-8-15 3220 Butte Butte Creek Reserve, on the n side of Butte Creek e of the Skyway, e of Chico. On the edge of the creek. 73 Comment
  CHSC94574  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CHSC62566  Satureja douglasii B. Castro; J. Jurewicz 1993-7-8 476 Butte Ca 1.6 mi S of Brush Creek via Bald Rock Rd, at head of drainage basin on W-facing slope. 975 Comment
  JEPS93968  Saxifraga californica Vernon H. Oswald 1998-3-16 8890 Butte along lower Jeep Trail paralleling the e side of Big Chico Creek (n of the old homestead, n end of Upper Bidwell Park); Upper Bidwell Park 243 Comment
  SEINET10871269  Saxifraga nidifica Lowell Ahart 1983-3-27 Ahart 3905 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  JEPS87147  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  CHSC65885  Scandix pecten-veneris Vernon H. Oswald 1996-4-20 7409 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 SE corner of Tract 5, Sanctuary II. Sacramento Valley. 32 Comment
  JEPS117892  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road 123 Comment
  SEINET10454697  Scandix pecten-veneris Lowell Ahart 1985-4-1 Ahart 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC84662  Schinus molle Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 ft southwest of the base of Oroville Dam. Along a drainage area below the trailer/office building. 112 Comment
  CHSC37383  Schoenoplectus acutus var. occidentalis R. A. Schlising 1980-8-3 3964 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
  CHSC81939  Schoenoplectus acutus var. occidentalis L. P. Janeway 2001-6-13 7171 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of canal next to the road. 30 Comment
  CAS-BOT-BC111654  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte By 730 Princeton. 1 mi So-1 mi W Butte City 4 corners. Comment
  UC1100774  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-14 13031 Butte canal near big pond on Sacramento Outing Club (Butte Sink); Butte Sink Comment
  CAS-BOT-BC22405  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  JEPS110301  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCSB63988  Scirpus microcarpus Janeway, L. 1995-8-2 Butte T22N, R6E, SE1/4 of SW1/4 of sec. 3; Soapstone quad.; 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 1478 Comment
  SEINET10971844  Scirpus setaceus Lowell Ahart 1984-6-8 Ahart 4685 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC103745  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC65571  Scutellaria siphocampyloides R. Banchero 1980-5-31 166 Butte Ca 2.3 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 3.9 mi SW of Cohasset. Ca 0.1 mi NW of road. 182 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  CHSC101326  Scutellaria tuberosa Lowell Ahart 2009-4-22 15582 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC21279  Scutellaria tuberosa M. S. Taylor 1974-4-20 184 Butte On Cohasset Ridge, ca. 1 mi n of Richardson Springs. 274 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  CAS-BOT-BC416978  Sedella pumila W. J. Follett; E. B. Follett 1963-5-19 s.n. Butte 3.8 mi. W of Paradise on road to Chico Comment
  HSC92528  Sedella pumila Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 30 Butte On N Table Mtn., S of Paradise on Cherokee Rd., S end of Table Mtn. proper 381 Comment
  RSA32758  Sedella pumila A. A. Heller 1938-4-22 15042 Butte About 9 miles north of Chico along U, S. Highway 99E. Comment
  CHSC57368  Sedum spathulifolium Rebecca Hill 1990-4-17 16 Butte Vic. Covered Bridge S bank of Butte Ck., ca. 7 mi e of Chico. 121 Comment
  RSA0081477  Sedum spathulifolium J. R. Shevock 1972-5-19 1784 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  CAS-BOT-BC62115  Selaginella hansenii W. I. Follett 1948-6-6 s.n. Butte West branch of Feather River at Dark Canyon 182 Comment
  SEINET10874644  Selaginella hansenii Mary Susan Taylor 1981-3-18 Taylor 3419 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC31518  Selaginella wallacei L. Ahart 1973-12-28 292 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10530444  Selaginella wallacei Mary Susan Taylor 1980-3-8 Taylor 2370 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  JEPS89349  Senecio Dean W. Taylor 1997-4-9 15967 Butte along Hwy. 70 ca. 2 rd. mi. w. of bridge over the river at Pulga (Feather River Canyon, Plumas Nat'l Forest); Sierra Nevada (nSNF), Plumas Nat'l Forest, Feather River Ca 579 Comment
  CDA13874  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-5-7 13732 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC116987  Senecio sylvaticus Lowell Ahart 2016-6-4 20939 Butte On the east side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC47665  Senecio triangularis Lowell Ahart 1989-9-21 6389 Butte On the west side of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CHSC43671  Sesbania punicea Vernon Oswald 1987-6-12 2998 Butte South side of the mouth of Big Chico Creek at the Sacramento River. 35 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  JEPS120148  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC101258  Sherardia arvensis Lowell Ahart 2009-4-17 15547 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC25051  Sherardia arvensis G. N. Steger 1972-4-15 Butte At edge of Cherokee road about 4 mi S of Cherokee, on North Table Mt. 396 Comment
  CHSC35323  Sherardia arvensis M. S. Taylor; K. Tharp 1982-4-8 4286 Butte Immediate vicinity of Oroville Dam Visitors Center, Oroville. 365 Comment
  CHSC47072  Sherardia arvensis R. A. Schlising 1986-3-22 4481 Butte Richvale Vernal Pools; 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC92545  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC32630  Sherardia arvensis Gary S. Lester 1974-4-20 108 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CHSC48609  Sidalcea calycosa Vernon H. Oswald 1984-4-1 1113 Butte Humboldt Rd, about mid-way between El Monte and Bruce roads, Chico. 79 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
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  CHSC1061  Sidalcea robusta F. Johnson 1937-5-25 Butte Near Covered Bridge on Butte Creek. 108 Comment
  CHSC104795  Silene antirrhina L. P. Janeway 2010-6-19 10026 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC50663  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC37434  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte E. of Inskip and near Jones Meadow. 1734 Comment
  UC600626  Silene douglasii H. F. Copeland 1932-7-24 Butte Jonesville Butte Creek drainage, Jonesville (near the rim w wall of Butte Creek drainage) Comment
  CHSC45558  Silene gallica Lowell Ahart 1974-4-14 402 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC4084  Silene laciniata subsp. californica E. P. Parreno 1967-4-17 Butte Upper Bidwell Park ca. 1 mile from Salmon Hole. Comment
  CHSC46352  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  CAS-BOT-BC389291  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock 914 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  UC478523  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  UC600621  Silene occidentalis subsp. longistipitata H. F. Copeland 1930-7-20 Butte Jonesville 1524 Comment
  CHSC104845  Silybum marianum Lowell Ahart 2010-6-12 16807 Butte Open grass land, at the old homestead on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  JEPS122256  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte West end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC31639  Sisyrinchium bellum L. Ahart 1977-5-20 1385 Butte Along edge of a small wash. Peter Ahart Ranch, Honcut. 60 Comment
  SEINET10905129  Smilacina racemosa Mary Susan Taylor 1981-5-21 Taylor 3783 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC97697  Solanum americanum Lowell Ahart 2007-10-31 14521 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  SBBG27341  Solidago elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CHSC25459  Solidago velutina subsp. californica Hayes; Warner 1977-9-11 98 Butte At the intersection of Schott Rd. and Highway 32 above Forest Ranch, ca. 20 mi e of Chico. 640 Comment
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD169794  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
  JEPS122118  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  CHSC112731  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 miles (air) northeast of Palermo. 51 Comment
  CHSC4396  Sorghum halepense R. Jaegel 1966-5-20 Butte 3 mi NW of Chico. Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC84019  Spergula arvensis subsp. arvensis Lowell Ahart 2003-6-23 10307 Butte In a grain field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  RSA0098132  Spergularia rubra L. Ahart 2008-5-8 14712 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC147948  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  CHSC44426  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock. 762 Comment
  CHSC51949  Spiranthes porrifolia L. P. Janeway 1988-7-29 3107 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  CDA41009  Stachys ajugoides var. rigida T. C. Fuller 1962-7-12 9192 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC52076  Stachys pycnantha B. Castro 1988-6-5 261 Butte Upper Little Chico Ck Cyn. 243 Comment
  JEPS108973  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  JEPS114740  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  SEINET10969018  Stachys rigida Mary Susan Taylor 1975-8-31 Taylor 879 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC60828  Stellaria borealis subsp. sitchana Vernon H. Oswald; Lowell Ahart 1993-6-22 5558 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  JEPS122022  Stellaria longipes subsp. longipes Lowell Ahart 2014-7-4 19555 -A Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  CHSC116270  Stellaria media Lowell Ahart 2015-11-7 20634 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of parking area at end of old highway Alternate 50, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC109120  Stellaria nitens Lowell Ahart 2012-3-23 17777 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  UC1609205  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  CDA42852  Stellaria pallida L. Ahart 2012-4-3 17943 Butte On large rocks, on the north side of Bloody Pin Trail, west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10506971  Stipa Mary Susan Taylor 1981-5-14 Taylor 3718 Butte T22N R6E sw sec 16, Pulga SE quad. S side of 23N00.2 in open landing area and edge of Yellow Pine Forest, ca. 2 mi SW of Merrimac. 3700 ft. 1128 Comment
  SEINET10934981  Stipa lemmonii Lowell Ahart 1985-5-15 Ahart 5004 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10480710  Streptanthus Mary Susan Taylor 1979-6-12 Taylor 2306 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC7047  Streptanthus diversifolius Darron Cook 1969-4-22 66 Butte W. side road top Table Mtn. ca. 7 mi n of Oroville. Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC44032  Streptanthus longisiliquus L. P. Janeway 1988-6-14 2791 Butte Northwest side of cyn of Cedar Cr, 4.1 mi E of Lomo along the 'Cedar Loop.' S-facing cutbank of the dirt rd. 1280 Comment
  CDA11185  Streptanthus polygaloides G. F. Hrusa 1991-5-29 8437 Butte Sierra Nevada; At junction of Hwy 70 and Pulga Rd. in Feather River Cyn. 473 Comment
  CHSC35749  Streptanthus polygaloides R. E. Preston 1982-5-18 285 Butte Ca. 0.5 mi sw of Forbestown Dam. 640 Comment
  CHSC54298  Streptanthus polygaloides Vernon H. Oswald; Lowell Ahart 1991-6-5 4648 Butte Dirt road to Minie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  JEPS110269  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  RSA700213  Streptanthus polygaloides L. Ahart 2004-6-22 11111 Butte On west margin of a gravel road, road leads to Butte Creek, S of Doe Mill Road, about 1/8 mile SW of the bridge across Butte Creek, about 2 miles (air) W of Stirling City. 692 Comment
  CAS-BOT-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  CAS-BOT-BC269532  Symphoricarpos albus var. laevigatus Clarence R. Quick 1952-6-30 52 -101 Butte Big Bar Mt., east of Pulga Comment
  CHSC101122  Symphoricarpos albus var. laevigatus Lowell Ahart 2009-5-23 15731 Butte On the west edge of a meadow and the east bank of Big Chico Creek, west 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
  UC1119963  Symphoricarpos mollis P. L. Johannsen 1936-7-29 972 Butte 1 mi n junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  CHSC11846  Symphyotrichum bracteolatum E. B. Copeland 1930-8-26 487 Butte Jonesville. 1500 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  CAS-BOT-BC98328  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Gray Lodge, SW of Gridley - sides of a deep ditch, about 100 meters north of the Check-in-Station, Gray Lodge, 35 Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC32736  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Between Ponderosa Way (Rim Rd) and Concow Rd, ca. 1/10 mi s of their jct; ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 2 mi n of Lake Concow. 975 Comment
  CAS-BOT-BC81330  Taxus brevifolia Clarence R. Quick 1952-6-29 52 -94 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  RSA122686  Thalictrum fendleri P. L. Johannsen 1936-7-17 948 Butte 3 miles SE of Butte Meadows, Paynes Creek 1555 Comment
  CHSC45804  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-5 324 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek; near stream. 1487 Comment
  CHSC40323  Thalictrum fendleri var. polycarpum Ahart; Jokerst 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CAS-BOT-BC399766  Thalictrum polycarpum Lowell Ahart 1988-4-6 5958 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 60 Comment
  SEINET10530454  Thelypteris nevadensis Mary Susan Taylor 1981-5-21 Taylor 3782 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC25274  Thymus vulgaris K. R. Stern 1977-6-25 Butte Comment
  CAS-BOT-BC88200  Thysanocarpus curvipes A. A. Heller 1915-3-19 11772 Butte Hills 12 miles northeast of Chico near Rock Creek. Comment
  CHSC34535  Thysanocarpus curvipes R. E. Preston 1982-2-18 174 Butte Bank at base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
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