Search Results — 2000 specimen records retrieved (1604 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  CHSC105804  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1911 Comment
  SEINET10479965  Abutilon theophrasti Mary Susan Taylor 1978-9-8 Taylor 1905 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  UC725982  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  CAS-BOT-BC331610  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte Along road W of the Poe Power House, E of the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  CHSC6000  Acer palmatum M. MacArthur 1968-6-19 272 Butte Lawn in front of ADM. bld., near main entrance, Chico State College. 60 Comment
  CHSC63803  Achillea millefolium S. C. Morey 1983-7-28 634 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC210641  Achnatherum lemmonii John Thomas Howell 1962-6-16 37566 Butte Magalia 731 Comment
  JEPS110266  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  CHSC49585  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak. 2151 Comment
  CHSC101974  Achyrachaena mollis John P. McKeon 1980-4-22 9 Butte Ca. 30 m S of Jct of Hwy 99 and Cana Hwy 10 m W of Hwy 99, 19 km NW of Chico. 70 Comment
  CHSC3803  Achyrachaena mollis R. L. Adams 1964-4-13 60 Butte Found at roadside of Richardson Springs Road 3/4 mile from junction of Cohassett, on south side of road. Comment
  CAS-BOT-BC29950  Achyrachaena mollis Lowell Ahart 1980-5-4 2154 Butte near Thermalito 19 Comment
  SEINET11842159  Achyrachaena mollis E. J. Baker 1984-1 20 Butte E. side of Hwy 99, 1 yd S of intersection with Broyles Rd, ca 12 mi N of Chico 58 Comment
  CHSC113096  Acmispon americanus var. americanus Lowell Ahart 2013-11-18 19282 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 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC116583  Acmispon americanus var. americanus L. P. Janeway 2015-7-20 11804 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC43282  Acmispon americanus var. americanus Lowell Ahart 1987-8-30 5867 Butte On a large 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
  CHSC886  Acmispon americanus var. americanus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC96840  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  JEPS113174  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  SBBG121600  Acmispon argophyllus var. fremontii L. Ahart 2007-5-29 13937 Butte E side of Bald Rock Dome on W side of the Dome Trail, ca. 2 mi (air) NE of Big Bald Rock, ca. 16 mi (air) NE of Oroville 585 Comment
  CHSC48515  Acmispon nevadensis var. nevadensis Vernon Oswald 1987-5-31 2942 Butte Camelot Estates at the n end of Lake Concow. 621 Comment
  CHSC2833  Acmispon parviflorus David Prall 1965-4-25 30 Butte Growing on road-cut on north side of Humbug Rd. 0.3 mile swest of junction with Honeyrun Rd. (covered bridge). 152 Comment
  CHSC31813  Acmispon parviflorus L. Ahart 1976-4-7 1034 Butte Near edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  UCSB63730  Acmispon parviflorus Olson, B. 1975-5-7 Butte Ca. 400 m. N of Cherokee Rd., Table Mtn., 7.6 km. N of junction Table Mountain Blvd. and Cherokee Rd., 8.2 km. N of Oroville 335 Comment
  CAS-BOT-BC391376  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CHSC52672  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 355 Butte N part of Butte County, n of Philbrook Reservoir, at Coon Hollow. Streamside. 1633 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
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  CHSC39841  Adiantum jordanii Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CAS-BOT-BC65619  Adiantum jordanii Carol S. Ellingboe 1978-4-23 11 Butte ca. 4.5 m s of Chico Creek and 1.6 km e of Five Mile Recreation Area, 30 m w of Chico Police Shooting Range 100 Comment
  HSC66338  Adiantum jordanii M. S. Taylor 1980-4-1 2422 Butte S side of Butte Cr. near Covered Bridge 6 mi. E of Chico 122 Comment
  SEINET10932926  Adiantum jordanii Mary Susan Taylor 1980-3-1 Taylor 2340 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  HSC102685  Aegilops neglecta J. P. Smith 2013-5-5 13699 Butte Near the boat ramp area north of Grand Avenue at the Thermalito Forebay Recreation Area South. 67 Comment
  CHSC38073  Aegilops triuncialis R. E. Preston 1982-7-5 325 Butte On W side of Notre Dame Blvd, Chico. Comment
  CHSC97342  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. 757 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
  SEINET10942474  Aegilops triuncialis K. Bridwell 1978-5-25 Bridwell 110 Butte Ungrazed rangeland, ca. 300 yds. S of Pentz Rd., ca. 3 mi. E of intersection with Hwy. 99, ca. 12 mi. SE of Chico. Annual grassland. 76 Comment
  CHSC11373  Aesculus californica Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC45263  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kemshew Creek, ca. 1.5 mi (air) NE of Jones Meadow. 1950 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CAS-BOT-BC22968  Agoseris heterophylla Lowell Ahart 1981-4-24 2788 Butte Near North Honcut Creek 150 Comment
  CHSC32602  Agoseris heterophylla J. D. Jokerst 1980-5-6 645 Butte Top of the slope adjacent to Coutelenc Rd ca. 400 m N of its jct with the Skyway. Magalia serpentine. Comment
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC93354  Agoseris heterophylla var. heterophylla Lowell Ahart 2006-4-28 12543 Butte On the east side of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 313 Comment
Read comments
Jan 19 2011
  CHSC45623  Agoseris retrorsa Vernon H. Oswald 1984-4-9 1135 Butte Feather Falls Trail, 2.75 trail mi from the trail head at the end of Bryant Ravine Rd. 548 Comment
  SACT000053  Agropyron laeve Herbert Copeland 1935-7-25 Butte Comment
  CHSC41978  Agrostis avenacea Lowell Ahart 1986-11-14 5468 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS95146  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville Oroville 51 Comment
  CAS-BOT-BC127331  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC127335  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Rd., ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC127374  Agrostis exarata Lowell Ahart 1988-7-31 6152 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
  SEINET3450813  Agrostis exarata Unknown 2003-6-30 10333 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  UCD52484  Agrostis exarata var. monolepis John Thomas Howell 1973-7-9 49692 Butte NE of Pulga Bridge, Feather River highway. Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC108057  Agrostis hendersonii Melanie Williams; Tim Hanson, Matt Simenc, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  CHSC45104  Agrostis idahoensis Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, the creed crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  JEPS122225  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC94533  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10901958  Agrostis scabra Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4220 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  SEINET10465410  Alisma triviale Mary Susan Taylor 1979-11-11 Taylor 2285 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CDA14089  Allium amplectens G. F. Hrusa, T. D. Wilfred 1997-7-3 13974 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC4076  Allium amplectens H. E. Lindahl 1967-4-6 9 Butte Located 1.1 mi n of county dump on Neal Rd. Comment
  CHSC59361  Allium amplectens J. L. Guardino 1992-4-16 6 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  CAS-BOT-BC460740  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC36902  Allium campanulatum R. A. Schlising 1980-6-10 3665 Butte NW part of county, along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. 1341 Comment
  CHSC21270  Allium cratericola M. S. Taylor 1973-4-21 15 Butte Ca. 1/4 mi w of Cherokee Rd, ca. 1 1/2 mi s of Cherokee, on Table Mountain. Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 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
  CHSC96343  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 756 Comment
  CHSC35996  Allium obtusum var. obtusum J. D. Jokerst; R. A. Schlising 1982-5-19 1573 Butte Top of Lumpkin Ridge NE of camp 18. 1280 Comment
  CHSC63486  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte On the south side of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 914 Comment
  CHSC38268  Alnus rhombifolia Vernon Oswald 1983-5-8 450 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel ca. 300 ft downstream from Chico Creek. 79 Comment
  CHSC25502  Alopecurus carolinianus L. Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD55880  Alopecurus carolinianus L. Ahart 1982-5-10 3430 Butte Peter Ahart Ranch, ca. 2 mi northeast of Honcut. 50 Comment
  CAS-BOT-BC137943  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte Thermalito. 65 Comment
  UCD55954  Alopecurus saccatus A. A. Heller 1914-4-24 11318 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC116004  Amaranthus albus Lowell Ahart 2015-10-9 20540 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
  SEINET10937690  Amaranthus albus Lowell Ahart 1985-11-7 Ahart 5228 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
  CHSC37532  Amaranthus blitoides M. S. Taylor; L. Ahart 1982-10-11 5159 Butte Graylodge Wildlife Refuge, on n side of loop road w of HQ, 12 mi sw of Gridley. 18 Comment
  CHSC51348  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1990-10-11 4459 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  CAS-BOT-BC142953  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  CHSC60585  Amelanchier utahensis Vernon H. Oswald; Lowell Ahart 1993-4-19 5285 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Between creek and the lookout. 774 Comment
  SEINET3450928  Ammannia coccinea Unknown 2003-6-23 10300 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  HSC96898  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte Gridley, N of Spruce St., E of the railroad tracks 28 Comment
  UC172861  Amsinckia lycopsoides A. A. Heller 1913-3-9 10683 Butte hills 2 mi n Oroville 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
  RSA0089989  Amsinckia parviflora A. A. Heller 1938-4-22 s.n. Butte Along U.S. Highway #99E near the junction with the Cana road. 76 Comment
  CHSC43929  Ancistrocarphus filagineus Vernon Oswald 1988-4-21 3279 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  UCD56050  Andropogon glomeratus M. S. Taylor 1977-11-12 1532 Butte Sierra Neveda, in Foothill Woodland in seep area on north side of Upper Bidwell Park Rd., Chico. 213 Comment
  CDA13338  Angelica breweri G. F. Hrusa, T. D. Wilfred 1996-7-9 13184 Butte Sierra Nevada; on USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Sheet 1 of 2 Comment
  UC1246763  Angelica californica A. S. Barclay, R. D. Barbee and K. E. Blum 1962-6-20 1198 Butte 2 mi s of Cohasset (on road to Chico) 762 Comment
  SEINET10454783  Angelica californica Mary Susan Taylor 1980-9-12 Taylor 3335 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  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
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CHSC38321  Anthemis cotula Vernon H. Oswald 1983-6-13 674 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  UC195390  Anthemis cotula A. A. Heller 1914-6-18 11479 Butte near, east of Butte Creek Durham; Butte Creek Comment
  RSA0009189  Antirrhinum cornutum C. C. Bruce 1897-06 1833 Butte [No location information provided.] Comment
  JEPS124024  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte About 2 miles east of the intersection of Lumpkin Ridge Road, County Road and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. Comment
  SEINET10547631  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-6-22 Taylor 2169 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC38640  Aphanes occidentalis Vernon Oswald 1983-3-7 133 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 0.1 mi. w of the power lines. 128 Comment
  CHSC43854  Aphanes occidentalis L. P. Janeway 1988-2-21 2588 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC35695  Aphyllon purpureum J. D. Jokerst 1982-4-19 1531 Butte Top of North Table Mt, S of and adjacent to the second E-W oriented drainage N of Cherokee Rd at the mesa's E edge. 365 Comment
  UCR231504  Apocynum androsaemifolium Anna M. Hurlbutt 2009-8-7 021 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC52191  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 236 Butte Ca. 23.5 air mi E of Chico. 1219 Comment
  UC1594658  Arabidopsis thaliana Vernon H. Oswald and Lowell Ahart 1992-4-8 4896 Butte Trail near abandoned railroad grade in Oroville Dam Recreation Area, on s side of Thermalito Diversion Pool, between spillway and Sycamore Hill Oroville Dam Recreation Area; , Thermalito Diversion Pool 76 Comment
  SD1977  Arabis eschscholtziana E. B. Copeland 1929-7-29 366 Butte Jonesville 1550 Comment
  POM219312  Arabis rectissima H. F. Copeland 1931-6-10 1518 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC25285  Aralia californica M. S. Taylor 1977-8-15 1421 Butte W branch of Feather River, ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC28418  Aralia californica M. S. Taylor 1979-10-5 2227 Butte Along stream entering Paradise Lake on se side, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  UC1122885  Aralia californica J. E. Sowder 1933-8-4 120 Butte slope above Sable Power House; Chico Quadrangle Comment
  SEINET10454396  Aralia californica Mary Susan Taylor 1979-10-5 Taylor 2227 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
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  CAS-BOT-BC410080  Arceuthobium occidentale A. A. Heller 1913-10-1 11144 Butte Hills near Big Chico Creek, east of Chico Comment
  RSA632987  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27477 Butte Cohasset. 630 Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  SEINET11989223  Arctostaphylos manzanita J. T. Howell 1975-1 51105 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC38860  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal road west of Paradise just below the Spring House. Comment
  CAS-BOT-BC38861  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile below the ten Mile House east of Chicoin the digger pine and oak belt. Comment
  CAS-BOT-BC38867  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte At Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  RSA178607  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  UC726643  Arctostaphylos mewukka A. A. Heller 1942-1-29 16357 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UCD52377  Arctostaphylos mewukka L. Ahart 1985-11-17 4840 Butte Near Kunkle Reservoir; about 2 miles south of Paradise. 518 Comment
  CHSC106063  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CAS-BOT-BC45570  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CAS-BOT-BC45571  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  POM367380  Arctostaphylos patula H. F. Copeland 1925-5-6 223 Butte Jonesville. 1524 Comment
  UCD51936  Arctostaphylos truei John Thomas Howell 1975-6-15 51107 Butte Castle Drive near Cliff Drive, Paradise, Butte County. Transition Zone. 609 Comment
  UCD51938  Arctostaphylos truei John Thomas Howell 1975-6-15 51100 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte Co. 396 Comment
  UCD51947  Arctostaphylos truei John Thomas Howell 1975-6-15 51099 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11989221  Arctostaphylos truei J. T. Howell 1975-1 51100 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48251  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. 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
  CHSC28870  Aristolochia californica M. S. Taylor 1980-2-17 2359 Butte Along a dirt road, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CAS-BOT-BC295838  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte About Chico Meadows 1219 Comment
  UC573399  Arnica dealbata P. L. Johannsen 1936-7-16 928 Butte Bolt Creek Lassen National Forest, Paynes Creek Quad. 1432 Comment
  CHSC50814  Arnica longifolia Vernon H. Oswald; Lowell Ahart 1990-7-19 4370 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CHSC94007  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CAS-BOT-BC146271  Arrhenatherum elatius var. elatius Lowell Ahart 1988-7-31 6151 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC105789  Artemisia douglasiana Lowell Ahart 2010-9-13 17153 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC11849  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville. 1550 Comment
  CHSC43238  Artemisia douglasiana Lowell Ahart 1987-9-24 5894 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SBBG128103  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, ca. 0.5 mi W of Pacific Heights Rd, ca. 3.5 mi NW of Palermo 31 Comment
  SEINET10872090  Artemisia douglasiana Mary Susan Taylor 1977-10-10 Taylor 1522 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  CHSC3146  Asclepias cordifolia Gary Dutton 1966-4-23 254 Butte Found 9 miles from Chico on Hwy. 32. Comment
  RSA401661B  Asclepias cordifolia M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC119  Asclepias fascicularis Eleanor Stilson 1897-6-1 Butte Comment
  CHSC47067  Asclepias speciosa R. A. Schlising; P. Broyles 1988-7-9 4577 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  POM181763  Aspidotis californica H. F. Copeland 1926-03 542 Butte Near Iron Canyon. Comment
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC44076  Aspidotis densa L. P. Janeway 1987-7-5 2466 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  SEINET10474437  Aster oregonensis subsp. californicus Mary Susan Taylor 1982-8-16 Taylor 4984 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  CHSC90942  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  UC1506099  Astragalus gambelianus Robert T. Clausen 1963-3-22 63016 Butte Oroville Sugarloaf Peak, Campbell Hills, Sacramento River drainage (Campbell Hills, se slope Sugarloaf Peak, Sacramento River drainage, Sacramento Valley) 150 Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  HSC32694  Astragalus pauperculus David Johnson 1974-4-20 43 Butte Table Mtn. Comment
  SEINET10452232  Astragalus pauperculus Mary Susan Taylor 1984-4-6 Taylor 5410 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
  CHSC46264  Astragalus tener var. ferrisiae Vernon Oswald 1989-5-1 3753 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 0.6 mi s of Biggs-Afton Hwy. 18 Comment
  CHSC95084  Asyneuma prenanthoides L. P. Janeway 2006-6-25 8703 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CAS-BOT-BC68687  Athyrium filix-femina var. californicum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  CHSC46866  Atriplex argentea var. mohavensis Vernon Oswald 1989-9-6 3982 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.9 mi w of Pennington Rd. 19 Comment
  CHSC61034  Atriplex depressa Vernon H. Oswald 1993-7-29 5729 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CHSC47669  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito. 73 Comment
  CHSC27232  Aucuba japonica P. Moyer 1972-3-18 141 Butte Front entrance of Bidwell Mansion. 60 Comment
  CHSC10836  Avena sativa Lowell Ahart 1962-5-20 Butte Ahart Ranch, Honcut. 39 Comment
  CAS-BOT-BC66256  Azolla mexicana Lowell Ahart 1975-1-9 s.n. Butte Near North Honcut Creek, 2 miles N & 3 miles E of Honcut 60 Comment
  JEPS120948  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CAS-BOT-BC98759  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Growing on dry dark soil along the edge of a small wash - Palermo 100 Comment
  CAS-BOT-BC98185  Baccharis salicifolia Gordon H. True 1971-4-8 6450 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley. 24 Comment
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  JEPS115263  Baccharis salicifolia subsp. salicifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15443 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
  UC1056314  Bacopa repens John Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  SBBG18210  Balsamorhiza sagittata M. Vincent 1962-4-20 218 Butte Stern Rd, ca. 0.5 mi W of Harrison Rd, Paradise Comment
  CHSC60577  Barbarea orthoceras Vernon H. Oswald; Lowell Ahart 1993-4-21 5294 Butte Along the Skyway ca. 1 mi S of De Sabla. 804 Comment
  CHSC43648  Barbarea verna Vernon Oswald 1987-4-22 2340 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. On the edge of the creek. 68 Comment
  CHSC66291  Bellardia trixago Lowell Ahart 1996-6-13 7684 Butte Along the east side of Palermo Honcut Highway, Peter Ahart Ranch, about 2 3/4 miles north of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC7073  Berberis aquifolium var. dictyota R. B. Watkins 1969-3-31 12 Butte .6 mi e of Jarbo gap, 2yds. S on Forest Service Rd. #23N12. 670 Comment
  CAS-BOT-BC75546  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. 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
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC31615  Blennosperma nanum Lowell Ahart 1975-4-2 739 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  RSA726250  Blennosperma nanum var. nanum R. R. Halse 2002-3-27 6160 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  CHSC43458  Boechera arcuata Lowell Ahart 1978-4-19 1650 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  CHSC28391  Boechera breweri J. D. Jokerst 1979-6-21 295 Butte N.W. slope of Humboldt Peak. 2072 Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  JEPS117231  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC45122  Bolboschoenus glaucus Vernon Oswald 1985-5-8 1751 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  RSA0101689  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC69114  Boykinia major Lowell Ahart 1997-8-1 7796 Butte At the bottom of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  RSA443119  Boykinia occidentalis L. Ahart 1985-6-30 5075 Butte E of the dirt road to the Forbestown Res. About 2.5 miles NE of Forbestown. 869 Comment
  CHSC86863  Brachypodium distachyon L. P. Janeway; John Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  RSA755047  Brassica napus L. Ahart 2009-4-26 15607 Butte E side of Highway 99, south of the wash, about 1/2 mile south of the stoplight at the intersection, about 1 mile south of Butte Creek, about 3 miles S of Chico. 60 Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC28530  Brickellia californica M. S. Taylor 1979-9-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  CHSC11334  Briza maxima Lowell Ahart 1962-5-5 Butte Near Honcut. 42 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC52485  Briza maxima R. L. Ondricek 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  UCD57368  Briza maxima M. S. Taylor; J. D. Jokerst and L. Ahart 1980-5-24 2745 Butte Foothill Woodland. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  RSA181720  Briza minor H. F. Copeland 1923-4-12 90 Butte near Biggs Comment
  SEINET3921417  Briza minor Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 229 Butte Off hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 Comment
  SEINET10507330  Briza minor Mary Susan Taylor 1978-4-14 Taylor 1555 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC40079  Brodiaea elegans A. A. Heller 1938-5-22 15105 Butte Near Chico airport. Upper Sonoran Life Zone. Comment
  UC1080383  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte US Hwy 99, 1.7 mi NW from jct with road from Pentz 91 Comment
  CAS-BOT-BC486479  Brodiaea sierrae John Thomas Howell 1962-6-15 37527 Butte Magalia 731 Comment
  RSA700275  Bromus carinatus L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1913 Comment
  CHSC112437  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the east side of Black Bart Road, about 3/4 miles (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC87953  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  JEPS110292  Bromus carinatus var. carinatus Lowell Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  CAS-BOT-BC156295  Bromus caroli-henrici Lowell Ahart 1984-5-31 4655 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  CAS-BOT-BC156030  Bromus diandrus Peter H. Raven 1953-5-9 5430 Butte 8 miles from Bangor on Oroville Road. 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
  CHSC101659  Bromus diandrus Lowell Ahart 2009-4-26 15611 Butte About 10 miles northeast of Chico, 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. 461 Comment
  UC203849  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 mi n of Oroville Comment
  CAS-BOT-BC155464  Bromus hordeaceus Javier Penalosa 1962-6-18 2464 Butte Near Confluence of French and Peavine Creeks. 609 Comment
  CHSC30297  Bromus hordeaceus M. S. Taylor 1980-5-27 2643 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  RSA691015  Bromus japonicus L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzinita Avenue, Chico. 122 Comment
  UCD58894  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC38065  Bromus orcuttianus R. E. Preston 1982-6-23 310 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC96857  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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
  UCD59252  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  CAS-BOT-BC161958  Bromus rubens A. A. Heller 1914-4-11 11279 Butte Hills 8 miles north of Oroville. Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CHSC31706  Bromus sterilis L. Ahart 1978-5-16 1733 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 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
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  NY664734  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather river near Stirling Comment
  SEINET10524080  Bromus vulgaris Edwin B. Copel 1929-7-22 Copeland 336 Butte Jonesville. In brush and low woods. 1500 Comment
  CDA5336  Bupleurum lancifolium Mackessy, L. L. Heinrichs 1963-6-19 Butte L. A. Balsley property, Route 1, Box 248, Oroville. 0 Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  CHSC3559  Calandrinia ciliata R. D. Briggs 1966-3-6 68 Butte Road side, 1/4 mile due west of golf course club house in Bidwell Park, Chico. 91 Comment
  CHSC54362  Callitriche heterophylla M. Bailey 1991-4-17 563 Butte E side of Pentz-Magalia Road, ca 0.2 mi n of its jct with Hwy 70. Roadside ditch. 152 Comment
  CHSC96424  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
  JEPS117263  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC103748  Callitriche heterophylla var. heterophylla Lowell Ahart 2010-5-16 16681 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC31832  Callitriche marginata L. Ahart 1974-4-29 447 Butte In rice field, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10972756  Callitriche marginata Mary Susan Taylor 1980-3-15 Taylor 2379 A Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  UCSC000453  Callitriche verna E. B. Copeland 1932-1 s.n. Butte Jonesville Comment
  SEINET10531075  Calocedrus decurrens Locey 1975-5-6 LOCEY 22 Butte 10 yds s of Fitzgerald Road and 50 yds e of Highway 32, at Forest Ranch. Woodland. Elevation 2357 feet. 717 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC4674  Calochortus luteus R. Carter 1966-4-30 386 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  RSA377408  Calochortus luteus J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CAS-BOT-BC492562  Calochortus minimus C. C. (Mrs.) Bruce 1897-6-1 s.n. Butte Dye place Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 Comment
  CHSC108803  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC3522  Calochortus monophyllus John Francis 1966-4-23 125 Butte Table Mt. Comment
  CHSC44656  Calochortus monophyllus L. P. Janeway 1988-5-19 2671 Butte Along Cohasset Rd near the Anderson Mill site, near the county line. 1133 Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC4134  Calochortus tolmiei R. Carter 1966-4-26 359 Butte Found ca. 10 mi. NE Oroville along W side USFS road 21N40 to Bloomer Mt., 0.5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  SJSU9961  Calochortus tolmiei F. S. Gereb 1968-5-4 89 Butte above Megalia Reservoir near Megalia 609 Comment
  SEINET7073602  Calochortus weedii A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
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Jul 17 2018
  UC1714555  Caltha biflora E. B. Copeland 1931-6-9 306 Butte Kennedy's Willow Creek Meadow Jonesville; , Jonesville 1550 Comment
  CHSC11814  Caltha leptosepala var. biflora E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadow by North Willow Creek. 1550 Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 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
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 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
  JEPS120843  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CAS-BOT-BC106079  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte Jarbo Pass on the Feather river Highway east of Oroville 609 Comment
  CHSC108165  Calycadenia oppositifolia L. P. Janeway 2011-8-17 10657 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CHSC40472  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC44955  Calycadenia oppositifolia Pauleen Broyles 1988-4-19 1107 Butte Lower Nance Canyon. 90 Comment
  LA203135  Calycadenia oppositifolia A. A. Heller; 1926-5-22 13940 Butte aong the Richardson Springs Road 3 mi. N of Chico Comment
  UC1876647  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mi S of Chico Municipal Airport on Cohasset Rd. Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC275388  Calycadenia truncata var. truncata Clarence R. Quick 1964-7-9 64 -62 Butte N of Jarbo Gap Comment
  CAS-BOT-BC275394  Calycadenia truncata var. truncata Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  CAS-BOT-BC90930  Calycanthus occidentalis H. L. Mason 1927-5-10 3718 Butte Coal Creek, north side of Table Mountain near Oroville. Comment
  CDA13915  Calycanthus occidentalis G. F. Hrusa, T. D. Wilfred 1997-7-3 13982 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC99549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2008-5-26 9392 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 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
  CHSC48299  Calystegia malacophylla Vernon Oswald 1983-8-17 981 Butte Humboldt Summit on Humboldt Road, NE of Jonesville at the junction of Butte, Tehama and Plumas Counties. 1999 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC34980  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-9 3139 Butte S of Cohasset; 4.2 mi NE of Keefer Road, along Cohasset Road. Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City 1219 Comment
  CAS-BOT-BC496961  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  CHSC44446  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte Small meadow north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  POM219514  Campanula prenanthoides H. F. Copeland 1924-8-2 599 Butte Jonesville. 1524 Comment
  CHSC38034  Capsella bursa-pastoris R. E. Preston 1982-11-13 365 Butte At edge of almond orchard, s side of Nelson Rd at jct with Adobe Rd, ca. 3 1/4 mi ne of Nelson. 46 Comment
  CHSC90194  Capsella bursa-pastoris Robert Kissane 1989-4-23 20 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  UC600711  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville 1524 Comment
  CHSC60664  Cardamine californica var. californica Vernon H. Oswald 1993-4-12 5258 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track. 341 Comment
  CAS-BOT-BC37878  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  CHSC31096  Cardamine oligosperma Diane M. Reilly 1980-3-21 3 Butte 1/4 mi off Big Bend Rd on old dirt road, ca. 4 mi off Hwy 70, ca. 25 mi e of Chico. 365 Comment
  UC203628  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek Canyon Big Chico Creek 68 Comment
  SEINET11991665  Cardamine oligosperma M. C. Earley 1982-1 12 Butte ca 11 mi ESE of Chico 112 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  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
  CHSC59008  Carex abrupta Lowell Ahart 1992-7-26 6849 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  HSC87063  Carex amplifolia L. P. Janeway 1988-6-29 3114 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  HSC87283  Carex amplifolia L. P. Janeway 1988-6-14 2775 Butte Near W branch Butte Creek, 2 mi. E of Hwy. 32, at Ewalt Camp 922 Comment
  RSA700399  Carex angustata L. Ahart 2004-8-2 11327 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  UCD140165  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butte City. Comment
  RSA770098  Carex bolanderi L. P. Janeway, B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River) 823 Comment
  SEINET10706540  Carex bolanderi Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3018 Butte T26N, R5E, Jonesville Quad (15'), NW 1/4 of sec 21. Along Willow Creek, 1 mile west of Humbug Road. Small open sedge-dominated moist meadow above the creek. With C. heteroneura, C. lemmonii, C. subfusca. In forest of Jeffrey Pine and White Fir. 1798 Comment
  SEINET10817915  Carex bolanderi A. Arthur Heller 1928-6-16 Heller 14667 Butte Damp, grassy places in the Yello Pine Forest at Butte Meadows. Comment
  SEINET7552657 Image available Carex brainerdii L. P. Janeway 2005-5-29 8406 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. Kimshew Point 7.5' quad. 1317 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CHSC101124  Carex densa Lowell Ahart 2009-5-23 15730 Butte 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. 236 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  RSA0045625  Carex divulsa subsp. divulsa Lowell A. Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 64 Comment
  SEINET7483993 Image available Carex echinata E. B. Copeland 1929-1 610 Butte Jonesville. 1500 Comment
  CHSC45078  Carex echinata subsp. echinata Vernon Oswald 1983-7-6 829 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  JEPS113680  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC105511  Carex fracta Lowell Ahart 2010-9-21 17199 Butte On damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  UCD140346  Carex fracta L. P. Janeway 1987-6-26 2296 Butte Rag Dump, Fall Creek. 1173 Comment
  SEINET7485255 Image available Carex gracilior Peter F. Zika 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) 640 Comment
  CHSC74133  Carex hirtissima B. Castro 1998-6-18 794 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. 929 Comment
  JEPS103107  Carex hoodii L. P. Janeway, B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  RSA0037178  Carex hoodii Lowell A. Ahart 2010-9-21 17201 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC52251  Carex infirminervia L. P. Janeway; R. A. Schlising 1988-7-22 3058 Butte Upper southeast slope of Coon Hollow, near beginning of Coon Hollow Creek. 1920 Comment
  JEPS121937  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC45747  Carex laeviculmis L. P. Janeway 1988-6-19 2839 Butte 3.3 mi N of Stirling City towards Inskip along logging rd 0.2 mi W of The Skyway. 1219 Comment
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  POM213964  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville. 1524 Comment
  UC1609038  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte about 1 1/2 mi se Bald Mountain (on n side of the dirt road to Big Kimshew Creek, ne of Stirling City) 1493 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
  SEINET10467332  Carex multicaulis Mary Susan Taylor 1981-3-24 Taylor 3435 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
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 Comment
  SEINET11182689 Image available Carex nervina Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10518 Butte ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir 1695 Comment
  CHSC84720  Carex nudata L. P. Janeway 2003-5-11 7783 Butte High Cascade Range. Along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte); just upstream of the diversion structure. 588 Comment
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  SEINET4286045  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 B Butte Near Cornelia Lott Sank Memorial Spring Comment
  CAS-BOT-BC119046  Carex pellita Herbert Faulkner Copeland 1920-8-1 174 Butte Jonesville Meadow 1219 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  SEINET7571067 Image available Carex pendula L. P. Janeway 2004-6-20 8137 Butte Chico 7.5' quad, Sacramento Valley. South end of Chico, along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage 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-BC115306  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows. 1219 Comment
  CHSC44989  Carex utriculata S. C. Morey 1983-7-23 574 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52239  Carex utriculata L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2988 Butte Crane Valley (upper Big Kimshew Cr); meadow. 1569 Comment
  JEPS110204  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the 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
  SEINET6194187 Image available Carex utriculata H. F. Copeland 1933-7-21 s.n. Butte by Butte Creek; vicinity of Jonesville, Lassen National Forest Comment
  UC1594543  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow) 1737 Comment
  CHSC94924  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills. West side of Morris Ravine arm of thermalito Diversion Pool (Feather River), 2.0 km north-northeast of Thermalito Diversion Dam. At edge of water. 68 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
  CHSC27268  Castanea dentata P. Moyer 1971-9-29 14 Butte CSUC Campus. So-wil-len-no Ave. 60 Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  CAS-BOT-BC249334  Castilleja applegatei Lowell Ahart 1983-6-21 4074 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CHSC108829  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC44359  Castilleja attenuata Lowell Ahart 1988-3-27 5945 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  JEPS105936  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC3318  Castilleja exserta M. Gregg 1966-3-28 54 Butte On Cherokee Rd. to the top of Table Mt. north of Oroville. Comment
  CHSC3657  Castilleja exserta Robert D. Briggs 1966-4-12 R- 117 Butte 3 miles south of downtown Chico. Comment
  CHSC29117  Castilleja lacera M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2458 Butte On n side of Swedes Flat Rd in dry open areas in Foothill Woodland, ca. 1 mi e of its jct with Oroville Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC1541391  Castilleja miniata E. B. Copeland Jun 1931 1554 Butte Comment
  CHSC40883  Castilleja pruinosa Lowell Ahart 1985-5-15 5002 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  CHSC62130  Castilleja rubicundula subsp. rubicundula B. Castro; R. A. Schlising 1986-5-6 50 a Butte Ca 7 air mi N of Chico in a pasture on NW side of Meridian Road ca 0.2 mi E of its jcn with Hwy 99. 56 Comment
  CHSC12148  Castilleja subinclusa R. A. Petersen 1973-4-29 20 Butte Located 7.2 mi e of Chico City limits s of Hwy. 32. 426 Comment
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  CHSC40338  Ceanothus cuneatus Lowell Ahart 1985-3-4 4845 Butte Found growing on red rocky soil near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC40677  Ceanothus cuneatus Ahart; Jokerst 1985-3-24 4865 Butte Found growing on damp bare serpentine west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC42003  Ceanothus cuneatus Lowell Ahart 1961-3-16 3 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  SEINET12210557  Ceanothus cuneatus Unknown 1975-1 17 Butte 250 mi from Cohasset Rd, 6.8 mi.NE of Chico airport N of Chico Comment
  SEINET12210610  Ceanothus cuneatus B. R. Parker 1976-1 2 Butte 1.5 mi NE of Oroville on SE side of Glen Drive. Chaparral-Oak woodland ecotone 111 Comment
  CHSC77441  Ceanothus integerrimus Tim Stofer 1997-4-9 2 Butte Located on the east side of trail 120 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  CAS-BOT-BC52003  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte edge of the forest at Cohasset. above Pine Creek, several miles farther north Comment
  CHSC52465  Ceanothus prostratus Patricia Causey 1979-4-20 16 Butte Scattered population ca 1 mi SE of Forest Ranch; W base of Doe Mill Ridge, 5 ft E of Doe Mill Rd. 731 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 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. 68 Comment
  CHSC100871  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek 455 m west of Day Camp. 91 Comment
  CAS-BOT-BC272092  Centaurea melitensis Lowell Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut 50 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CDA7276  Centaurea melitensis L. Ahart 2000-5-31 8414 Butte About 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. Comment
  CHSC21010  Centaurea solstitialis M. S. Taylor 1975-6-21 776 Butte In field, Citrus Ave, between W. 11th and 12th Ave, Chico. 60 Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCR188716  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  CHSC66439  Centaurium tenuiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. At NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CDA38375  Centaurium tenuiflorum L. Ahart 1998-7-1 8025 Butte 100 yards south of an east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC51997  Centromadia fitchii M. S. Taylor 1975-6-25 806 Butte Above Mud Ck., ca .5 mi n of Richardson Sprgs. Hotel, ca. 6 mi ne of Chico. 243 Comment
  UC754006  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CHSC77992  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  CDA42901  Cerastium fontanum subsp. vulgare L. Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC48251  Cerastium fontanum subsp. vulgare Vernon Oswald 1984-5-16 1187 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek at Five Mile Recreation Area. In lawn. 82 Comment
  JEPS108776  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC101319  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along 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
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  SEINET11910531  Cercocarpus betuloides Unknown 1975-1 18 Butte 50 Yd. up dirt road junct. with Cohasset Rd., 7.0 mi NE of Chico Muni Airport 305 Comment
  CAS-BOT-BC137002  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CHSC78096  Cercocarpus betuloides var. betuloides Caleb E. Casey 1999-4-9 Butte South rim trail near Bear Hole, Upper Bidwell Park. Trail one half mile before Bear hole. 121 Comment
  JEPS115231  Cercocarpus betuloides var. betuloides Lowell Ahart, John Dittes 2009-3-20 15518 Butte On the south side of the Guardian Rock Trail, about 100 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 C 407 Comment
  SD5738  Chaenactis douglasii E. B. Copeland 1931-7-6 Butte Jonesville 1900 Comment
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  SEINET7042405  Chamaebatiaria millefolium A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC30736  Chamaesyce glyptosperma M. S. Taylor 1980-7-6 3056 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CDA34264  Chamaesyce maculata L. Ahart 2009-10-8 16414 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. 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
  CHSC40362  Chamaesyce maculata Lowell Ahart 1985-7-9 5111 Butte Near a large slab of cement, on a side road 100 yards west of Ponderosa Way, about 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. 292 Comment
  CHSC47424  Chamaesyce maculata Lowell Ahart 1975-7-19 898 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC29718  Chamaesyce ocellata J. D. Jokerst; T. B. Devine, D. Greemstein 1979-9-13 430 Butte Top of North Table Mt, 100 m north of jct of east edge of Mt and Cherokee Rd. Comment
  CHSC37373  Chamaesyce ocellata R. A. Schlising 1981-9-20 4196 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
  CHSC72250  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  CDA34143  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart, J. Dittes, J Guardino 2009-9-13 16404 -A Butte Peter Ahart Ranch, about 2 miles north and 0.25 miles east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  UC1563257  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte 1/8 mi n Canyon Creek Bridge (n side of Canyon Creek, below high water line); Lake Oroville 228 Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  UC1122498  Chamerion angustifolium subsp. circumvagum P. L. Johannsen 1936-7-20 951 Butte 1 1/2 mi s Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 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
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  SEINET10872452  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4999 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  JEPS95989  Chenopodium album Lowell Ahart 1999-10-28 8312 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
  SEINET10904479  Chenopodium ambrosioides Mary Susan Taylor 1979-10-13 Taylor 2248 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CDA3115  Chenopodium pumilio L. Ahart 2002-10-17 9990 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CDA34556  Chenopodium strictum var. glaucophyllum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15411 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  JEPS120022  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  JEPS119926  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east if Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC11806  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  CHSC48670  Chimaphila menziesii Vernon Oswald 1983-8-17 998 Butte Pacific Crest trail ca. 2000 ft E of Humboldt Summit. 2011 Comment
  CAS-BOT-BC451372  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SEINET10472637  Chlorogalum pomeridianum Mary Susan Taylor 1980-7-6 Taylor 3053 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC81582  Chlorogalum pomeridianum var. pomeridianum Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  CAS-BOT-BC252837  Chorizanthe polygonoides var. polygonoides Roxana S. Ferris 1952-5-17 12484 Butte Flat above canyon of Butte Creek, about 2 miles west of Paradise on Chico Road 457 Comment
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  CHSC24494  Chrysolepis sempervirens M. S. Taylor 1976-6-28 1166 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC39935  Cicendia quadrangularis M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5398 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-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
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  CHSC64197  Circaea alpina subsp. pacifica S. C. Morey 1983-7-23 588 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC278076  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  CAS-BOT-BC285522  Cirsium occidentale var. candidissimum A. A. Heller; H. E. Brown 1902-5-8 5502 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC285526  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30485 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC228760  Cistanthe umbellata Lowell Ahart 1982-6-15 3559 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC30796  Clarkia arcuata M. S. Taylor 1980-4-18 2527 Butte Bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  CHSC84704  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7804 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.4 km southwest of mouth of Bean Creek. 283 Comment
  CHSC1102  Clarkia gracilis subsp. albicaulis M. Underhill 1952-7-2 Butte 304 Comment
  CHSC22114  Clarkia gracilis subsp. albicaulis Robert A. Schlising 1974-5-27 3132 Butte Cohasset Road, 4.7 mi NE of Chico Airport (or 6.7 mi NE of Chico). Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC171878  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CAS-BOT-BC163355  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi north-east of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls 914 Comment
  CAS-BOT-BC163357  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek 786 Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  CHSC81384  Clarkia purpurea Samantha Hillaire 2001-5-16 303 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  JEPS117277  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  UCD80466  Clarkia purpurea subsp. quadrivulnera CNPS SN Foothill Team 2005-5-5 SNFN 0157 c Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  RSA31284  Clarkia purpurea subsp. quadrivulnera H. C. Cantelow 1940-5-10 s.n. Butte 8.5 miles SW of Oroville, Highway 24 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CHSC59110  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. Southwest-facing road-cut. 512 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  CHSC60837  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1993-6-22 5554 Butte Powellton Rd., 2.1 mi N of Doe Mill Rd. (Ponderosa Way), N of De Sabla. 963 Comment
  HSC95491  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi. NW of Oak Point, 0.8 mi. E of Transfer Ridge on the E side of Breakneck Canyon, 1.5 mi. N of W Branch Feather River 1402 Comment
  CAS-BOT-BC164777  Clarkia rhomboidea Lowell Ahart 1983-6-26 4118 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  POM271488  Clarkia rhomboidea J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  SEINET10492534  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte of Lake Madrone, at Oroville-Quincy Hwy turnoff, ca 10 miles NE of Oroville; Yellow Pine Forest. 2000 feet. 610 Comment
  SEINET10689282  Clarkia stellata Robert A. Schlising 1980-5-26 Schlising 3601 Butte Several miles sw village of Cohasset, along fireroad in chaparral e of Cohasset Road, T23N, R2E, sec 8; elevation ca 1350 feet; on shaded banks, among Quercus dumosa, Ceanothus integerrimus, Arctostaphylos viscida, A. mewukka, Rhus trilobata, Heteromeles arbutifolia. 405 Comment
  CHSC56065  Claytonia palustris L. P. Janeway; R. A. Schlising 1988-7-16 3001 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  SEINET4988485  Claytonia palustris Unknown 1959-7-4 490 Butte Jonesville, 0.4 km E of Jonesville Hotel 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
  CHSC31195  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, in very wet shady areas under tress, in moss over rocks by the creek, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi ne of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC38628  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-2-19 88 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. at Parking Area T (3.3 mi e of the power lines). Growing on the shaded side of a rock culvert. 219 Comment
  JEPS119842  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte About 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC64126  Claytonia perfoliata Michael Deal 1992-4-19 1 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  POM219310  Claytonia rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville. 1524 Comment
  CHSC32676  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3432 Butte S side of Hwy 70 near creek entrance opposite Cresta Poserhouse. 487 Comment
  CHSC56077  Claytonia rubra subsp. rubra L. P. Janeway; R. A. Schlising 1988-7-16 3000 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC65824  Clematis lasiantha Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi south of trailhead in Paradise. 548 Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC1737  Collinsia sparsiflora var. collina M. Roberson 1956-4-9 Butte SW of Paradise along Skyway. 426 Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  CHSC2449  Collinsia tinctoria R. Carter 1965-7-8 279 Butte Found at old Berry Creek R. R. station on N Fork of Feather R., ca. 2.2 mi. NW of Lake Madrone, 20 yds. W of R. R. tunnel and 10' down bank. 210 Comment
  UC600649  Collinsia torreyi var. wrightii H. F. Copeland 1932-6-27 Butte woods near Butte Creek Meadows (going toward Kirbys Meadow, Jonesville); Jonesville Comment
  POM74612  Collomia heterophylla C. C. Bruce 1898-05 2389 Butte [No locality information provided] Comment
  RSA337391  Collomia heterophylla L. Ahart, P. Ahart 1984-6-10 4694 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC29378  Collomia tinctoria R. A. Schlising; R. Banchero 1980-6-12 3691 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  RSA80351  Conium maculatum F. W. Peirson 1926-6-20 6761 Butte 5 miles west of Chico Comment
  UC429104  Corallorhiza striata R. M. Austin July, 1896 224 Butte Colby Comment
  CHSC51013  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  JEPS104641  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, ca 1/2 mi n of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 320 Comment
  CHSC50806  Cordylanthus tenuis subsp. viscidus Vernon Oswald; Lowell Ahart 1990-7-31 4415 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  JEPS102542  Coriandrum sativum Lowell Ahart 2001-5-10 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  POM77913  Cornus glabrata C. C. Bruce 1897-05 1823 Butte Butte Creek. Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  CHSC48309  Cornus sericea subsp. sericea Vernon Oswald 1983-6-22 736 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CHSC61640  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte On the west side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC600763  Cornus sericea subsp. sericea H. F. Copeland 1931-6-11 Butte by Scotch John Creek in Butte Creek Canyon Jonesville; Butte Creek Canyon, Scotch John Creek Comment
  CHSC92592  Cornus sessilis L. P. Janeway 2005-5-17 8392 Butte Northern High Sierra Nevada. Plumas National Forest; along unnamed creek 0.5 km west of Cedar Creek, 1.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  UC195371  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte at West Branch; w. side Sierra Nevada 1036 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
  CAS-BOT-BC401863  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  JEPS106291  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville 61 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  UC1562845  Cotula coronopifolia Barbara Ertter with Lowell Ahart 1986-4-13 5903 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC26727  Crassula tillaea M. S. Taylor; M. Hayes 1978-4-14 1554 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
  JEPS122138  Crassula tillaea Lowell Ahart 2014-5-2 19424 Butte About one mile northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CAS-BOT-BC427954  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 301 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC20498  Crataegus monogyna M. S. Taylor 1975-5-8 564 Butte On nw corner of Arcadian and Sacramento, Chico. 60 Comment
  CHSC38642  Crataegus monogyna Vernon Oswald 1983-4-6 287 Butte Upper Bidwell Park, Chico, on the s edge of Upper Park Rd. 0.3 mi e of the end of the pavement. 94 Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  POM29974  Crocidium multicaule C. C. Bruce 1897-01 2074 Butte Foothills Comment
  SEINET5327042  Crotalaria retusa R. McKee 1914-9-1 s.n. Butte U.S. Plant Introduction Garden, Chico, CA Comment
  CHSC46403  Crucianella angustifolia Lowell Ahart 1989-5-23 6252 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC51910  Crucianella angustifolia L. P. Janeway 1988-6-19 2820 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd. 274 Comment
  RSA725028  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CAS-BOT-BC190088  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte North of the state burrow area, west of Pacific Hieghts Road, about 5 miles southwest of Oroville. 40 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET10518390  Crypsis vaginiflora A. Arthur Heller 1919-8-13 Heller s.n. Butte Rice fields between Nelson & Richvale in moist adobe. Comment
  CHSC39263  Cryptantha affinis Lowell Ahart 1983-6-30 4184 Butte Along the dirt road, on the east side of the West Branch of the Feather River, about 5 miles east of Stirling City. 1150 Comment
  CHSC69040  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  SBBG119797  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1524 Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 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
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  SEINET10497277  Cryptantha flaccida Lowell Ahart 1985-5-10 Ahart 4951 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC11391  Cryptantha intermedia Lowell Ahart 1970-4-16 Butte Along Humbug Road, near Paradise. 762 Comment
  CHSC150  Cryptantha intermedia M. Diven 1930-5-6 Butte Chico. 57 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  SD4203  Cryptantha torreyana E. B. Copeland 1929-7-29 Butte Jonesville 1700 Comment
  CHSC113400  Cryptantha torreyana var. torreyana Lowell Ahart 2014-7-7 19565 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte 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
  CHSC34982  Cucurbita foetidissima R. A. Schlising 1981-9-20 4194 Butte 4.3 mi W of railroad crossing in Richvale, on Richvale West Road. Comment
  UCR7821  Cupressus macnabiana Wm. Horn Jr. 1964-7-6 640706 2 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC224425  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70 548 Comment
  CAS-BOT-BC224427  Cuscuta californica Lowell Ahart 1985-6-17 5066 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 975 Comment
  SEINET10496606  Cuscuta californica Lowell Ahart 1985-6-17 Ahart 5066 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  JEPS119952  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  JEPS120643  Cuscuta campestris Lowell Ahart 2013-11-13 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, along the sides of Sucker Creek, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  JEPS94766  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte about 7 air mi n of Oroville (North Table Mountain, e of the fence, e of the cow chute and on the e side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC113062  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte On dry smoothed dredge tailings, northwest of a large wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC4385  Cynodon dactylon M. Hillier 1966-5-30 Butte In juniper bed at corner of Legion Ave and Warner St., Chico. Comment
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CHSC116210  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  CHSC6066  Cynosurus echinatus B. Wilson 1968-5-16 202 Butte E border of Bidwell Park, Chico. 59 Comment
  JEPS116093  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  CHSC84152  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  RSA0028815  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  UCD141029  Cyperus eragrostis L. Ahart 1969-9-24 34 Butte in and along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 45 Comment
  CAS-BOT-BC114381  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11750453  Cyperus erythrorhizos Unknown 1984-1 4789 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  JEPS120025  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET9084642  Cyperus flavescens L. Ahart 2000-8-23 8664 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road; ca 4 air miles SW of Oroville. 43 Comment
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 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
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC76301  Cyperus niger Lowell Ahart 1999-9-21 8274 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCR263570  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  CAS-BOT-BC113840  Cyperus niger var. capitatus A. A. Heller 1914-7-20 11581 Butte Hills 8 mi N of Oroville Comment
  CHSC113157  Cyperus squarrosus Lowell Ahart 2013-11-13 19244 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC113534  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC31629  Cyperus strigosus L. Ahart 1969-9-9 32 Butte Edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66454  Cyperus strigosus Vernon H. Oswald; Lowell Ahart 1996-6-10 7730 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC23703  Cystopteris fragilis M. S. Taylor 1976-5-5 1118 Butte On s side of Bear Creek, ca. 1/4 mi s of Hwy 70, ca. 30 mi ne of Oroville. Comment
  CAS-BOT-BC190483  Dactylis glomerata John Thomas Howell 1962-6-16 37579 Butte Sierra Nevada. Pentz road 2 miles south of Magalia. 609 Comment
  CHSC104848  Danthonia californica var. americana Lowell Ahart 2010-6-12 16798 Butte On the west side of a small drainage, on the east side of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 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
  CHSC6079  Danthonia unispicata B. Wilson 1968-4-19 164 Butte 2 mi s of Cherokee, on Table Mountain. Comment
  CHSC63720  Darlingtonia californica Lowell Ahart 1994-9-3 7547 Butte In open meadow, near the east side of the meadow, ... Field redacted by CHSC, contact the data manager for more information 1371 Comment
  CHSC33371  Darmera peltata Steven Azevedo 1980-4-16 15 Butte Middle of Mud Creek, 1 mi. e of Richardson Spring. 243 Comment
  JEPS95790  Datisca glomerata Lowell Ahart and Vernon H. Oswald 1999-10-3 8289 Butte about 1 mi SE of Ord Ferry (E side of river, NW of Parrott Landing, about 2 mi SE of Ordbend, about 12 miles (air) SW of Chico); Sacramento River 32 Comment
  UC118573  Delphinium Mrs. R. M. Austin 1896-7-1 Butte Colby Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  JEPS115838  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  CAS-BOT-BC121623  Delphinium patens subsp. patens Saichi Kawahara 1968-5-4 394 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC53301  Delphinium variegatum V. L. Keeran 1976-4-13 20 Butte Ca. 200 m e of Skyway ca. 8.3 km ese of Chico and 10 km wsw of Paradise. 334 Comment
  POM150574  Delphinium variegatum E. B. Copeland 1903-5-2 3251 Butte Chico Comment
  UCD96667  Delphinium variegatum A. A. Heller 1918-4-19 12987 Butte 12 miles north of Chico. Comment
  CAS-BOT-BC16982  Delphinium variegatum subsp. variegatum Lowell Ahart 1980-5-17 2297 Butte 1/2 mile south-east of Hurleton. 600 Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  CHSC26821  Deschampsia danthonioides M. S. Taylor 1978-5-7 1618 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC75428  Deschampsia danthonioides Jennifer Slater 1997-4-27 40 Butte At the Wurlitzer addition of the Vina Plains Preserve west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UCD62543  Deschampsia danthonioides R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC38807  Deschampsia elongata Vernon Oswald 1983-6-14 687 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CHSC49534  Deschampsia elongata Vernon Oswald; Lowell Ahart 1987-7-1 3062 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC23654  Dicentra formosa M. S. Taylor 1976-4-20 1078 Butte On e side of Ridge Rd, ca 100 m n of junction of Ridge Rd and Ponderosa Way, Magalia. 609 Comment
  CHSC24672  Dicentra formosa C. E. Stopher 1972-4-18 27 Butte 2.9 km sse of Forest Ranch. On e bank of Little Chico Creek. 489 Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  CHSC638  Dicentra formosa P. Delaplane 1965-5-11 73 Butte Found ca 20 ft. from E side of rd. 2mi. E of Magalia off Skyway, N of Paradise Reservoir. 609 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
  CHSC30355  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1979-2-23 1134 Butte Top of North Table Mt., W edge of Mountain adjacent to the waterfall at the S branch of Coal Cr. Comment
  HSC38022  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2485 Butte Just E of Magalia Comment
  SEINET10533898  Dichelostemma congestum R. M. Austin Austin 37 Butte Mesa-east of Chico. Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CAS-BOT-BC501082  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles SW of Oroville on Highway 24 Comment
  CAS-BOT-BC501086  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville near Table Mountain Comment
  SEINET10472709  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2573 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CAS-BOT-BC208972  Digitaria ischaemum John Thomas Howell 1961-9-22 36734 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  CHSC69735  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Lawn, at the Butte County Historical Society Museum, Oroville. 60 Comment
  RSA0060846  Digitaria ischaemum Lowell A. Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC209030  Digitaria sanguinalis John Thomas Howell 1961-9-22 36731 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC29252  Digitaria sanguinalis M. S. Taylor 1979-10-2 2209 Butte Sacramento River at Chico Landing, off River Rd., ca. 5 mi w of Chico. 30 Comment
  JEPS106151  Digitaria sanguinalis Lowell Ahart 2004-8-30 11398 Butte In a peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  SACT000981  Digitaria sanguinalis Herbert Copeland 1923-1 Butte Comment
  UC1953464  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  UCD163049  Diospyros virginiana var. virginiana D. O. Burge 2015-9-21 1832 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CAS-BOT-BC153763  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC3631  Diplacus douglasii Alice L. Stoll 1966-2-28 35 Butte 7.9 miles N.E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  CAS-BOT-BC151919  Diplacus douglasii Lowell Ahart 1983-4-10 3923 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  SD234187  Diplacus douglasii Virginia Pinkus Ryder 1965-4-3 379 Butte Table Mtns. Open lava meadows. 381 Comment
  CAS-BOT-BC150503  Diplacus grandiflorus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC76971  Diplacus grandiflorus Margie Collins 1894-5-1 Butte Centerville. Comment
  CDA41674  Diplacus grandiflorus James I. Mallory 1970-5-26 374 Butte Comment
  CHSC90254  Diplacus kelloggii Eric M. Haney 1989-4-21 6 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  CHSC44814  Diplacus layneae R. Banchero 1980-6-12 210 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CHSC44730  Diplacus torreyi R. Banchero 1980-6-16 233 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy32. 1292 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CHSC2256  Disporum hookeri N. Maxwell 1929-5-11 Butte 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
  POM57731  Downingia bicornuta E. B. Copeland 1903-5-30 3284 Butte Chico. Comment
  RSA298986  Downingia bicornuta W. L. Jepson 1934-5-4 16605 Butte Pine Creek, near Sacramento River, 1 1/2 miles S of Nord. Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC46261  Downingia insignis Vernon Oswald 1989-5-1 3757 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Fallow fice field located on the e side of the dike road ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  JEPS103261  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
  SEINET10973510  Draba verna Mary Susan Taylor 1975-3-3 Taylor 396 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
  CHSC44483  Draba verna var. aestivalis Lowell Ahart 1988-3-27 5931 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC35016  Draba verna var. verna R. E. Preston 1982-3-20 193 Butte Roadside, Hwy 70 at Bear Ranch Creek; ca. 22 mi nne of Oroville. 457 Comment
  CHSC62546  Drosera rotundifolia B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 154 Butte Southernmost pond on slopes on south side of Coon ... Field redacted by CHSC, contact the data manager for more information 1767 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC3500  Dryopteris arguta M. Gregg 1966-3-7 25 Butte Approx. 12.3 miles from CSC Ad. Bldg. Up Humbug Rd. off the Skyway across the covered bridge. Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CHSC70826  Dryopteris arguta Vernon Oswald 1998-4-12 8904 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  CHSC111982  Dudleya cymosa subsp. cymosa Lowell Ahart 2012-6-2 18133 Butte Along the sides of Truex Road, w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC25451  Dysphania ambrosioides Hayes; Warner 1977-9-12 98 Butte Growing in flowerbed beside the Agriculture rainshed near the Clear Creek. On the Butte College Campus at the intersection of Clark and Pentz Roads, approx. 15 mi sse of Chico. 85 Comment
  CHSC26666  Dysphania ambrosioides M. S. Taylor; M. Hayes 1977-8-16 1445 Butte In flower bed, Butte College, Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC116127  Dysphania botrys Lowell Ahart 2015-11-7 20617 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
  CHSC116589  Dysphania botrys L. P. Janeway 2015-7-20 11802 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  UCD98820  Dysphania pumilio A. A. Heller 1914-7-20 11580 Butte Hills 8 miles north of Oroville. Comment
  CHSC25500  Echinochloa colona L. Ahart 1977-8-14 1547 Butte On the sides of a slough. Peter Ahart Ranch, Honcut. 50 Comment
  RSA722301  Echinochloa colona R. R. Halse 2006-8-2 6985 Butte At edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 29 Comment
  CHSC42921  Echinochloa crus-galli Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC71268  Echinochloa crus-galli Lowell Ahart 1998-7-1 8031 Butte On the margins of a stream, 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 350 Comment
  JEPS110295  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA123459  Echinochloa crus-galli H. S. Yates 1936-8-19 6125 Butte Chico; 10 miles S. of Durham 30 Comment
  SBBG116106  Echinochloa crus-galli B. Crampton 1963-9-9 6887 Butte ca. 5 mi NW of Biggs, Biggs Rice Experiment Stn Comment
  UC1563279  Echinochloa crus-galli Lowell Ahart 1990-9-30 6604 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  UCD60909  Echinochloa crus-galli L. Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C 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
  CAS-BOT-BC208563  Echinochloa oryzicola Lowell Ahart 1981-9-19 3192 Butte Butte County Rice Experiment Station 35 Comment
  CHSC113142  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte In a rice field, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  JEPS120762  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  SEINET3097024 Image available Echinodorus berteroi Marc Mittleman 1980-8-1 223 Butte Little Chico Creek, east side adjacent to China Garden Springs 262 Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  CHSC115332  Elatine Lowell Ahart 2015-4-24 20073 Butte Normal size plants, on dry to damp bare dark soil, on the west side of the dirt road. 22 Comment
  CHSC115335  Elatine Lowell Ahart 2015-4-24 20069 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS122150  Elatine Lowell Ahart 2014-8-8 19696 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  JEPS122196  Elatine Lowell Ahart 2014-4-25 19398 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UC1101557  Elatine ambigua Herbert L. Mason 1946-8-15 13051 Butte near caretaker's house (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CHSC82226  Elatine americana Lowell Ahart 2002-4-10 9477 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC117440  Eleocharis acicularis Lowell Ahart 2016-5-24 20868 Butte On the bottom of a large drainage, about 100 yards norfth of the ditch, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  CHSC78181  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-5 8447 Butte On the north margin of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC78920  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-10-2 8699 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
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  UC569530  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow 1341 Comment
  CHSC45116  Eleocharis bolanderi Vernon Oswald 1988-5-18 3317 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 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
  CHSC102404  Eleocharis macrostachya Lowell Ahart 2009-6-30 15979 Butte On wet soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC78289  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  CHSC97340  Eleocharis pachycarpa L. P. Janeway 2007-8-6 9148 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Carpeting the floor of the pond where water level has dropped, ground still saturated but not standing water. 776 Comment
  POM183192  Eleocharis parishii H. F. Copeland 1930-7-24 1356 Butte Jonesville. 1524 Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98521  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  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
  SEINET13709637  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8677 Butte Feather River, 1/2 Mi. W of Pacific Heights Rd., Oroville Wildlife Area, 3.3 Mi. SW Oroville (T19N, R3E, S 34, SE 1/4) 140 Ft 43 Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC31714  Elymus multisetus L. Ahart 1977-6-16 1419 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  JEPS110200  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC38166  Enemion occidentale Vernon Oswald 1983-2-14 71 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 200 ft e of Parking Area R (on the section of trail leading eastward to Brown's Hole). 231 Comment
  CHSC117433  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 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
  UC600547  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-7-19 Butte along Butte Creek Jonesville Comment
  CHSC95136  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-11-12 13542 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  POM214003  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-26 s.n. Butte Jonesville. 1500 Comment
  RSA767491  Epilobium cleistogamum L. Ahart 2010-6-20 16825 Butte Large vernal pool, about 0.25 miles north of Cox lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 air miles southeast of Oroville. 60 Comment
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC70424  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC26796  Epilobium minutum M. S. Taylor 1978-5-6 1572 Butte By RR tracks, Magalia. 609 Comment
  SEINET10841085  Epilobium minutum Lowell Ahart 1984-6-8 Ahart 4674 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC61642  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte On the north side of the ridge, about 1/2 mile easta of Snow Mountain. 2103 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC46455  Epilobium oregonense V. Oswald; L. Ahart 1989-6-27 3824 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a meadow along Butte Creek. 1767 Comment
  RSA795698  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 0.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 299 Comment
  SEINET7073008 Image available Epilobium torreyi 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
  UC873167  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville (in a field below the Quercus Douglasii belt) Comment
  CAS-BOT-BC57854  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC109682  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, atTable 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC66068  Equisetum laevigatum Vernon H. Oswald 1996-5-22 7617 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  UC1609407  Equisetum laevigatum Lowell Ahart 1993-6-26 7012 Butte ca. 1/4 mi w Lost Creek Reservoir (near center <of> Section 24, n of dirt rd.) 1036 Comment
  CHSC35777  Equisetum telmateia subsp. braunii S. T. Heaston; M. Foster 1982-4-12 20 Butte W branch of the Feather River. 13 air mi n of Oroville, ca. 600 ft. ne Lime Saddle Powerhouse. 304 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  CAS-BOT-BC204456  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  UCD62970  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CHSC100523  Eragrostis pectinacea var. pectinacea Lowell Ahart 2008-11-4 15405 Butte On the east edge of the paved road, about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. 273 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
  SEINET10507725  Eragrostis pilosa Lowell Ahart 1985-10-12 Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  UC1562293  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-15 6558 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area); Lake Oroville 243 Comment
  CHSC35048  Eremogone cliftonii R. Schlising 1980-7-11 3882 Butte NE part of county at south end of Walker Plains. 1536 Comment
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  CHSC93078  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
  CAS-BOT-BC174185  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1987-7-1 3054 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek 1828 Comment
  CHSC48159  Ericameria bloomeri Vernon Oswald 1985-8-28 1933 Butte Humboldt Rd. 0.2 mi s of Humboldt Summit. 2005 Comment
  CAS-BOT-BC298292  Ericameria nauseosa var. speciosa H. E. Brown 1896-11-15 46 Butte Near Clear Creek 53 Comment
  CHSC61628  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC296819  Erigeron divergens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC100467  Eriobotrya japonica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15419 Butte On the west side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC259404  Eriogonum luteolum Harry A. George 1971-11-5 s.n. Butte Feather River, Oroville Barrow Area nr. Vance Avenue between Biggs & Oroville 40 Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39078  Eriogonum marifolium var. marifolium R. A. Schlising; K. Tarp 1983-8-12 4442 Butte N part of county, NE of Philbrook Reservoir on road to Carr Mine; 1.2 mile W of Plumas County line. 1981 Comment
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CAS-BOT-BC261715  Eriogonum nudum var. oblongifolium John Thomas Howell 1976-7-14 51815 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  POM306193  Eriogonum nudum var. pubiflorum Henry J. Ramsey 1939-10-16 s.n. Butte Oroville Comment
  CHSC31772  Eriogonum roseum Lowell Ahart 1974-9-30 639 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  CAS-BOT-BC268614  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC40784  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  JEPS117896  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Ridge top at head of Rattlesnake Creek (short tributary to West Branch Feather River) about 2.9 air km east of Magalia and 0.8 air km east of Sawmill Peak Northern High Sierra Nevada 951 Comment
  RSA718778  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of north Fork Feather River, along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentinr outcrop road cut bank; southeast-facing 579 Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  CAS-BOT-BC265215  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte Pulga Bridge, N. Fk. Feather River, Sierra Nevada 417 Comment
  CAS-BOT-BC265211  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 417 Comment
  SEINET11935016  Eriogonum umbellatum var. speciosum R. A. Schulising 1981-1 4136 Butte NE part of county,T22N,R5E,sec.2;serpentine outcrop along Coyote Gap Road,ca .5mi S of Coyote Gap 1219 Comment
  UC600499  Eriogonum ursinum E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  UCD101521  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of Feather River. 182 Comment
  JEPS103369  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CDA13336  Eriophyllum lanatum var. croceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13182 Butte Sierra Nevada; On USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Comment
  CHSC332  Eriophyllum lanatum var. croceum 1954-5-30 Butte Below Concow Lake on road to Flea Valley. Comment
  CHSC37768  Eriophyllum lanatum var. croceum M. S. Taylor 1981-5-21 3760 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  CAS-BOT-BC308160  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1955-6-14 30465 Butte Magalia, Sierra Nevada 731 Comment
  CDA13725  Eriophyllum lanatum var. grandiflorum G. F. Hrusa, T. D. Wilfred 1997-6-27 13903 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  JEPS115587  Eriophyllum lanatum var. grandiflorum Lowell Ahart 2009-5-23 15770 Butte On the north side of Ten Mile House Road, just southeast of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  POM193095  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  POM358061  Eriophyllum lanatum var. grandiflorum D. McClain 1969-4-24 89 Butte 10 yards south of Cohasset Road, 5 miles west of Cohasset 488 Comment
  RSA754545  Eriophyllum lanatum var. grandiflorum L. Ahart 2009-5-23 15770 Butte N side of Ten Mile House Road, just SE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET7057334  Erodium botrys Richard R. Halse 2002-3-27 6154 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway ca. 8 miles northwest of Chico. Elevation 40 meter. 40 Comment
  CHSC38450  Erodium brachycarpum Vernon Oswald 1983-3-5 116 Butte Upper Bidwell Park, Chico, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC38452  Erodium cicutarium Vernon Oswald 1983-3-13 153 Butte Upper Bidwell Park, Chico, in Parking Area P (2.0 mi e of the power lines). 207 Comment
  UCD127596  Eryngium castrense B. F. Smith 1969-4-15 93 Butte 2 miles south of Oroville. 74 Comment
  SEINET12118292  Eryngium vaseyi var. castrense Unknown 1936-1 13044 Butte along Mud Creek, near Chico Comment
  POM219374  Erysimum capitatum var. capitatum H. F. Copeland 1931-6-10 1527 Butte Jonesville. Between Willow and Colby Creeks. 1524 Comment
  CHSC44768  Erythranthe bicolor R. Banchero 1980-6-17 245 Butte Along the Skyway 1.1 mi Ne of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC113519  Erythranthe breweri Lowell Ahart 2014-7-7 19599 Butte Depression in a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 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. 228 Comment
  CHSC31868  Erythranthe geniculata L. Ahart 1974-5-14 453 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1771  Erythranthe guttata L. Oliver, D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  SEINET8380924  Erythranthe moniliformis C. E. Wickstrom 1964-8-29 52 Butte Butte Meadows 200 ft. sw of where [the] stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  CHSC1790  Erythranthe nasuta L. Oliver; D. Sloan 1939-3-27 Butte Rifle Range, Chico Creek. 91 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  SD4667  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville, in wet meadow 1500 Comment
  CHSC42865  Erythranthe pulsiferae Lowell Ahart 1987-5-12 5654 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falles. 1280 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
  CHSC32741  Erythronium multiscapideum M. S. Taylor 1981-4-14 3533 Butte S side of Ponderosa Way (Rim Rd), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  JEPS18173  Erythronium multiscapideum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5601 Butte 0.5 mi n Magalia 731 Comment
  UCD111667  Erythronium multiscapideum Christopher Mallek 2008-1 HW1- 2 Butte Magalia. 756 Comment
  SBBG70183  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole on Chico Crk, E of Chico Comment
  POM253318  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway near the Yankee Hill road Comment
  CHSC10823  Eschscholzia californica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  POM125703  Eschscholzia californica var. crocea C. C. Bruce 1897-05 2022 Butte Near Chico. Comment
  CHSC48614  Eucalyptus camaldulensis Vernon Oswald 1987-7-4 3090 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  CHSC235  Euonymus occidentalis F. Hedglin 1954-5-30 Butte Kimshew Falls by Rag Dump 5. Along streamside. 975 Comment
  CHSC25348  Euphorbia crenulata Marc P. Hayes 1977-4-22 18 Butte Ca. 2 km nw of Jarbo Gap, ca. 11 km w of Paradise. Forest, along Hwy 70, ca. 20 m n of Rd. 660 Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC49837  Euphorbia spathulata Vernon Oswald 1990-3-24 4139 Butte Nance Canyon on the n side of Neal Rd, ca. 0.7 mi ene of the double power transmission lines, ca. 1.7 mi ne of Butte County Sanitary Landfill. 121 Comment
  UC1562303  Eurybia integrifolia Vernon Oswald and Lowell Ahart 1990-7-19 4363 Butte ca. 3 mi e of, ca. .2 mi w of Plumas Co. line Philbrook Resevoir (on the s side of Philbrook Creek); Philbrook Creek 1981 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC115368  Festuca myuros var. myuros Lowell Ahart 2015-4-24 20060 Butte On the sides (road edges) of a large duck field, 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  CHSC73716  Festuca rubra H. Durio 1995-8-1 Butte Pinkard Meadow. 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. In meadow E of road. 1143 Comment
  CHSC41308  Festuca subulata S. C. Morey 1983-7-22 544 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC68916  Festuca subulata Lowell Ahart 1997-7-11 7756 Butte Along a stream, south of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS95024  Festuca subulata Lowell Ahart 1997-7-11 7807756 Butte abour 2 air mi ne of Stirling City (s of the dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  UC1609519  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  JEPS98971  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte Sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CHSC34215  Fragaria vesca M. S. Taylor 1981-4-28 3571 Butte N side of 23N28.2, at jct of Chico Creek, ca. 4 mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  UCD113236  Fragaria vesca L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC55648  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  SEINET10969447  Frangula purshiana Mary Susan Taylor 1981-5-21 Taylor 3758 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  SEINET8730880 Image available Frasera albicaulis Unknown 1946-1 2944 Butte S. 1, T. 20 N0. , R. 5 E. Comment
  JEPS120081  Fraxinus Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18111 Butte Along the paved park road, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10457424  Fraxinus latifolia Mary Susan Taylor 1974-10-11 Taylor 327 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico Comment
  CHSC2276  Fritillaria affinis N. Maxwell 1929-3-2 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC130315  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Along Milsap Bar Road, Plumas National Forest Comment
  CAS-BOT-BC130317  Fritillaria eastwoodiae A. A. Heller 1938-5-1 15058 Butte Above the reservoir beyond Magalia on Highway Comment
  CAS-BOT-BC130319  Fritillaria eastwoodiae A. A. Heller 1922-4-23 13618 Butte On the Feather River crossing near Yankee Hill Comment
  CHSC88655  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 266 Butte Plumas National Forest. In fill slope on Galen Ridge. 792 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  SEINET10905360  Fritillaria recurva Mary Susan Taylor 1981-5-21 Taylor 3784 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
  SEINET10500691  Galium bifolium Mary Susan Taylor 1978-7-18 Taylor 1714 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC34229  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y, ca. 1 air mi N of Feather Falls. 792 Comment
  CHSC38657  Galium bolanderi Vernon Oswald 1983-5-9 461 Butte Upper Bidwell Park, Chico. 100 ft W of the east terminus of Yahi Trail (near the turn-around at the E end of the park). 207 Comment
  SEINET10968826  Galium bolanderi Mary Susan Taylor 1981-5-5 Taylor 3611 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC36512  Galium murale L. Ahart 1982-5-29 3444 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CHSC78269  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UCD80735  Galium parisiense CNPS SN Foothill Team 2005-5-26 SNNR 0203 c Butte City of Chico, Upper Bidwell Park, near the intersection of 10 Mile House Road and Guardian Trail. The stand runs parallel to the Guardian Trail, which runs through part of the stand. 427 Comment
  HSC38059  Galium parisiense Thomas W. Nelson, Jane P. Nelson 1976-5-10 2466 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC51912  Galium porrigens var. tenue Sally A. Carter 1988-4-24 Butte South side of Little Chico Cr, ca 8.8 mi ESE of Chico, ca 50 ft W of Honey Run Rd. Comment
  JEPS26674  Galium porrigens var. tenue P. C. Hutchison 1961-6-9 2093 Butte 7 mi s Jarbos Gap (along US Alt. 40); canyon of the north fork of the Feather River Comment
  UC1523185  Galium porrigens var. tenue M. S. Taylor, T. Devine, and M. Merryman 1981-2-11 3380 Butte 20 ft e Lumpkin Rd (on n side of creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville); Big Bend Mt. Quad, Macabes Creek 457 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 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
  CHSC35317  Galium sparsiflorum subsp. glabrius M. S. Taylor 1980-5-8 2600 Butte Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32. 853 Comment
  CHSC32843  Galium tricornutum S. Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centenial Ave jct, 2.5 km E of Chico. 97 Comment
  CHSC38447  Garrya fremontii Vernon Oswald 1983-2-16 80 Butte Upper Bidwell Park, Chico, near th e end of the strip of riparian woodland bordering the n edge of Hooker Oak Recreation Area. 80 Comment
  HSC102784  Garrya fremontii L. Ahart 2012-3-2 17759 Butte About 9 mi. NE of Chico, ~200 yds. west of Hwy.32, ~200 yds. N of Ten Mile House Rd. 423 Comment
  RSA134772  Garrya fremontii Percy C. Everett, E. K. Balls 1959-10-20 23910 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  JEPS107518  Gastridium ventricosum Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  CHSC46708  Gayophytum humile V. Oswald; L. Ahart 1989-8-22 3955 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. Along the creek. 1767 Comment
  CHSC77425  Genista maderensis Laura Bogni 1997-4-5 15 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC94438  Gentianopsis simplex L. P. Janeway 2006-8-12 8846 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC7103  Geranium molle K. Cox 1969-4-4 15 Butte Bidwell Park. 4.2 mi E. of entrance to upper park. 60 Comment
  CDA25864  Geum macrophyllum T. C. Fuller 1962-7-12 9177 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  RSA774147  Gilia capillaris L. Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  SEINET10496744  Gilia capitata subsp. mediomontana Mary Susan Taylor 1981-5-21 Taylor 3772 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC90052  Gilia tricolor Peggy Fain 1991-4-21 20 Butte Ca. 2 km. E. of Richardson Springs Hotel, Musty Buck Preserve. 213 Comment
  HSC45815  Gilia tricolor J. P. Smith 1973-3-22 5920 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SEINET12326974  Gilia tricolor L. D. Curtis 1982-1 31 Butte 88 Comment
  CHSC36069  Gilia tricolor subsp. tricolor Daniel K. Parker 1981-4-21 4 Butte Ca. 75 m w Cherokee Road, 9.4 km ssw Cherokee. Meadow. 380 Comment
  CHSC78135  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  SEINET10873415  Githopsis pulchella subsp. campestris Austin AUSTIN s.n. Butte Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  CHSC31948  Githopsis specularioides J. D. Jokerst 1979-5-1 1220 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC38288  Githopsis specularioides Vernon Oswald 1983-4-25 381 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC67358  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2221 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  CHSC71213  Glyceria declinata Lowell Ahart 1998-6-9 7987 Butte Southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
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Aug 13 2012
  CHSC64257  Glyceria elata S. C. Morey 1983-7-23 582 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC44903  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 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
  SEINET10473780  Grindelia camporum Mary Susan Taylor 1975-6-30 Taylor 811 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  CHSC28513  Grindelia hirsutula var. davyi M. S. Taylor; J. D. Jokerst 1979-10-13 2262 Butte On Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. mi e of Paradise. 609 Comment
  CHSC97328  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills. Along the Oroville-Quincy Hwy 0.3 road km southwest of the south end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville. 306 Comment
  UCR219266  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  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
  SEINET10497305  Hackelia californica Mary Susan Taylor 1978-9-9 Taylor 1909 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  POM161686  Hackelia nervosa E. B. Copeland 1929-7-17 s.n. Butte About Jonesville. 2000 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  SD241752  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte Damp soil of dredge piles, no the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC897381  Helenium bigelovii A. A. Heller 1938-7-20 15284 Butte 7 mi e Chaparral (upper end of lake); Snag Lake 1524 Comment
  CAS-BOT-BC306544  Helenium bigelovii Clarence R. Quick 1966-7-11 66 -49 Butte At west end of Concow Meadow, about 6 m. north of Jarbo Gap 1097 Comment
  CDA35648  Helenium bigelovii J. R. Keck Jr. 1985-7-25 PDR# 331426 Butte Jones Meadow, near Stirling City. Lassen National Forest. 0 Comment
  UC600741  Helianthella californica subsp. nevadensis H. F. Copeland 1930-7-26 Butte Jonesville Jonesville (rocky peak above hotel) Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC100479  Heliotropium europaeum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15442 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
  CHSC60958  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC309787  Hemizonia congesta subsp. luzulifolia Lowell Ahart 1982-9-9 3768 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  POM219506  Hemizonia pungens subsp. pungens H. F. Copeland 1923-8-13 545 Butte Nelson. Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC115296  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Dredge tailings on south sides of the road, Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. 39 Comment
  CHSC94089  Hesperevax acaulis var. robustior R. Fischer 2005-3-27 680 Butte Chico. Collection from Bidwell Park along the lower South Rim Trail just above old pistol range. 76 Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC176000  Hesperolinon californicum Lowell Ahart 1988-4-29 5962 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
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC42894  Heterocodon rariflorum L. P. Janeway 1987-6-13 2204 Butte Along Dogwood Cr, along rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CHSC96960  Heterocodon rariflorum Lowell Ahart 2007-6-12 14074 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  SD116535  Heterocodon rariflorum Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3320 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Honcut between Marysville and Oroville. 45 Comment
  CAS-BOT-BC143634  Heteromeles arbutifolia Mrs. E. C. Sutliffe 1924-12-1 s.n. Butte Isaiah Comment
  SEINET11910533  Heteromeles arbutifolia Unknown 1977-1 27 Butte ca 10 mi NE of Chico, 1.1 mi E of Ten-mile and Hwy 32. Paradise Quad. 15' E central border 341 Comment
  CAS-BOT-BC311008  Heterotheca oregona 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
  CHSC88083  Heuchera micrantha var. erubescens R. D. Fischer 2004-4-2 169 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Big Chico Creek 25' from creek. E. bank below 10 Mile House Road. 213 Comment
  CAS-BOT-BC423450  Heuchera micrantha var. micrantha Saichi Kawahara 1968-5-4 382 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC33184  Hirschfeldia incana R. E. Preston 1981-5-27 72 Butte On n shoulder of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  UC177574 Image available Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  CHSC34145  Holcus lanatus L. Ahart 1981-9-15 3156 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  SD2178  Holodiscus discolor var. glabrescens E. B. Copeland 1929-7-17 Butte Above Jonesville, on stony mountain top 2000 Comment
  SEINET10506845  Hordeum Mary Susan Taylor 1981-5-1 Taylor 3582 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC34087  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst 1981-5-14 1319 Butte Top of North Table Mt, ca 25 M north of Cherokee Rd at the west edge of the mountain. Comment
  CAS-BOT-BC285092  Hordeum marinum subsp. gussoneanum John Thomas Howell 1962-6-15 37485 Butte Magalia 731 Comment
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  UCD113498  Horkelia fusca var. tenella H. F. Copeland 1928-8-2 371 Butte Jonesville. 1524 Comment
  CHSC12116  Horkelia tridentata M. F. Smith 1972-4-22 5 Butte 500 ft. south of Lumpkin Road at east end of old saw mill. 914 Comment
  CHSC43123  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC25265  Hosackia oblongifolia M. S. Taylor 1977-6-27 1395 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 60 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  SEINET10882700  Hypericum anagalloides Lowell Ahart 1977-6-3 Ahart 1403 Butte Peter Ahart Ranch, Honcut. Valley Grassland. Comment
  UCD110323  Hypericum anagalloides L. Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC738  Hypericum concinnum M. Underhill 1952-7-2 Butte Dry, brushy slope. 152 Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UC871991  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte Chico meadows 1219 Comment
  CHSC51265  Hypericum perforatum Lowell Ahart 1990-10-3 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC312933  Hypochaeris glabra John Thomas Howell 1961-9-22 36718 Butte Bank of Feather River, Oroville 53 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  CDA2760  Ipheion uniflorum R. Bell-Booth 1962-3-28 Butte 656 E. 5th Street, Chico. 0 Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CHSC116977  Iris macrosiphon Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CHSC79863  Iris macrosiphon Leanna Brown; Shirley Innecken 1999-3-9 77 Butte Paradise Flume, north from parking area. 439 Comment
  UC143451  Iris macrosiphon Mrs. R. M. Austin Mar 1896 13 Butte Little Chico Creek Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  RSA135852  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20690 Butte Along road crossing from Oroville-Magalia road to Highway 50 alt. via Pentz 488 Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  SEINET10874665  Isoetes Mary Susan Taylor 1980-3-1 Taylor 2345 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CAS-BOT-BC69946  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CHSC39547  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45120  Isolepis setacea V. Oswald; L. Ahart 1988-6-17 3405 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1066 Comment
  UC2026887  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east 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
  CAS-BOT-BC210160  Juncus acuminatus Peter Rubtzoff 1978-8-6 9248 Butte Thermalito Forebay, North Area in Lake Oroville State Recreation Area. Near picnic area just off Hwy. 70 Comment
  CHSC57153  Juncus articulatus L. P. Janeway 1987-6-19 2249 Butte Meadow on Pinkard Creek between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC78326  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte On the sides of a dirt road, about100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) mortheast of Feather Falls. 1219 Comment
  SEINET10472234  Juncus articulatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4136 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS113880  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14061 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  JEPS114389  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, 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 305 Comment
  UCD80374  Juncus bufonius var. bufonius CNPS SN Foothill Team 2005-4-15 SNFN 0081 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 50 m from the western boundary and ca. 70 m from the northern boundary. 85 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS120918  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the E side of Black Bart Road, about 3/4 road miles SW of the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  JEPS124273  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC78333  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA0113968  Juncus effusus subsp. pacificus Lowell A. 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 0.25 mile west of the Ponderosa Dam. 258 Comment
  SBBG121547  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte ca. 30 yards S of Oroville Dam Blvd, ca. 0.25 mi SW of old overlook, ca. 4 mi NE of Oroville 166 Comment
  JEPS115973  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS118082  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1252 Comment
  JEPS114888  Juncus ensifolius Lowell Ahart 2008-5-30 14801 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  CHSC28656  Juncus exiguus J. D. Jokerst 1979-10-13 383 Butte Along edges of Concow Cr. Intersecton of Concow Rd. Comment
  UC1564807  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-7-12 3848 Butte 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  JEPS118349  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  SEINET11787469  Juncus leiospermus Unknown 1984-1 4589 Butte ca 0.5 mi N of Kunkle Reservoir, along Kunkle Cr, ca 2 mi S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  JEPS110152  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12581 Butte On the bottom of a tire track through a marshy area, about 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parkin area, North Table Mountain, about 7 miles (air) north of Oroville 377 Comment
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north 346 Comment
  RSA768998  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte Open pasture field about 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4.5 air miles northeast of Oroville. 386 Comment
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS118343  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC117439  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Rodad, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC50698  Juncus tenuis Lowell Ahart 1990-5-25 6483 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC99817  Juncus tenuis Lowell Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS114823  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte below the high water mark of Lake Oroville, on the N side of the South Fork of the Feather River, about 50 yds E of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 243 Comment
  UC1562428  Juncus tenuis Lowell Ahart 1990-5-24 6483 Butte about .12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  CHSC107600  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  JEPS121377  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte above Oroville-Qunicy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill Comment
  JEPS119955  Juncus usitatus Lowell Ahart, Linnea Hanson 2012-5-23 18105 Butte Along the horse trail, north of Table 25, 20 yards south of Vallombrosa Avenue, southwest of Madrone, Lower Bidwell Park, Chico. Comment
  RSA592529  Keckiella breviflora subsp. glabrisepala S. O. Mattoon 1970-6-12 18 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE Cohasset. 671 Comment
  JEPS7915  Keckiella lemmonii Rimo Bacigalupi with Richard Hauke 1954-7-15 4727 Butte 3.1 mi below Nimshew (between Nimshew and Centerville, along Humbug Road, on the Butte Creek canyonside) 518 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
  CHSC69053  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  UC600427  Kelloggia galioides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC46107  Koeleria macrantha J. D. Jokerst; R. A. Schlising 1982-6-4 1587 Butte Ridge, ca 100 meters below the road on top of the ridge. 853 Comment
  JEPS122294  Lactuca saligna Lowell Ahart 2014-8-24 19731 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC31920  Lactuca serriola M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3377 Butte On road embankment, e side of Lumpkin Rd, ca. 200 ft n of Macabes Creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. 457 Comment
  JEPS19936  Lagophylla glandulosa C. C. Parry 1881-11-1 Butte Chico Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CHSC31888  Lamium amplexicaule L. Ahart 1973-4-15 201 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90649  Lamium amplexicaule Lowell Ahart 2005-4-2 11691 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
  CHSC111382  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  UCSC004639  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  CHSC44391  Lathyrus angulatus Lowell Ahart 1988-5-12 5991 Butte Open pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD106232  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  UC204733  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte w of Chico (bank of Sacramento River); Sacramento River Comment
  JEPS120834  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  SEINET956034  Lathyrus nevadensis E. B. Copeland 1931-1 654 Butte Jonesville. 457 Comment
  CHSC93981  Lathyrus nevadensis var. nevadensis R. D. Fischer 2004-6-20 768 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 collected at north end of Chico Meadows, adjacent Scout Road, along a meadow edge. 1371 Comment
  CDA4996  Lavatera cretica L. Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 /14 miles (air) northwest of Honcut, about 1 mile south of Oroville. Comment
  CAS-BOT-BC321780  Layia fremontii Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC90239  Layia fremontii Michael J. McNairn 1989-4-17 8 Butte Ca. 100 yds. ne of jct. Lupin Ave. and Ceres Ave., NE Chico. 76 Comment
  CAS-BOT-BC321776  Layia fremontii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC44373  Leontodon saxatilis subsp. longirostris Lowell Ahart 1988-6-23 6064 Butte Meadow, north of Forbestown Road, about 1 1/2 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC20877  Lepechinia calycina Robert A. Schlising 1963-6-7 2613 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC23141  Lepechinia calycina M. S. Taylor 1976-2-25 1003 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  POM70456  Lepechinia calycina C. C. Bruce 1898-05 2382 Butte County seat grade. Comment
  CAS-BOT-BC89879  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  CAS-BOT-BC89880  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CHSC108138  Leptochloa fusca subsp. fascicularis Lowell Ahart 2011-10-29 17731 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  UCD72995  Leptosiphon bicolor Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC59335  Leptosiphon filipes J. L. Guardino 1992-4-16 8 Butte Paradise, 1/4 mi s of Circle Dr terminus. 472 Comment
  CHSC31181  Lessingia nana M. S. Taylor; R. Schlising 1980-7-5 3059 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, up on edge of forest. 1127 Comment
  CAS-BOT-BC341786  Lessingia nemaclada John Thomas Howell 1951-6-26 27508 Butte Feather River Canyon 198 Comment
  CHSC116146  Lessingia nemaclada Lowell Ahart 2015-10-26 20587 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 228 Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CAS-BOT-BC341782  Lessingia nemaclada Lowell Ahart 1986-11-8 5432 Butte About 1 1/2 miles north of French Creek, along Swayne Hill, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville 640 Comment
  UCD159567  Leucanthemum maximum D. S. Park 2011-6-27 304 Butte East shore of Thermalito Afterbay. Growing on roadsides. Disturbed. 1999 Comment
  CHSC42945  Leucothoe davisiae Lowell Ahart 1987-7-8 5817 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  CHSC100837  Lewisia nevadensis R. A. Schlising 1980-6-26 3787 Butte 3.2 mi SEof Butte Meadows on Bull Hill Road (='Skyway'); in meadows along Bull Creek. 1511 Comment
  CHSC21272  Lewisia rediviva M. S. Taylor 1973-4-21 14 Butte Ca. 50 yds w of Cherokee Rd, ca. 6 mi ne of Oroville, on Table Mountain. 373 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CHSC42593  Ligusticum grayi Vernon Oswald 1985-7-11 1899 Butte High Lakes Rd. n of Philbrook Lake at a point 0.8 mi w of the road to Chips Creek. 1859 Comment
  CHSC27186  Ligustrum japonicum P. Moyer; R. Pessner 1971-10-1 22 Butte CSUC Campus. N bank Chico Ck., along So-wil-len-no Ave. 60 Comment
  POM169434  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SJSU967  Limnanthes alba A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  RSA31668  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 s.n. Butte 8 miles north of Oroville. Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  RSA715420  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte 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 Road. 29 Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  SEINET10496801  Linanthus filipes Mary Susan Taylor 1980-5-27 Taylor 2677 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
  SEINET10496803  Linanthus harknessii Mary Susan Taylor 1978-7-19 Taylor 1772 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
  UC726826  Linanthus parviflorus A. A. Heller 1942-5-17 16473 Butte between Cherokee and the Oregon City road Comment
  UCD123910  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 miles north of Oroville. Comment
  JEPS120849  Lindernia dubia var. anagallidea Lowell Ahart 2013-7-9 18832 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
  JEPS88435  Lindernia dubia var. anagallidea Vernon H. Oswald and Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, in the NW corner of Tract 9.1., Sanctuary I, a unit managed for watergrass (Echinochloa). 30 Comment
  SD2733  Linum lewisii E. B. Copeland 1929-7-17 Butte Above Jonesville 2000 Comment
  JEPS95792  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 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
  JEPS95811  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 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
  SEINET9782028 Image available Lipocarpha occidentalis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC27911  Listera convallarioides M. S. Taylor 1978-7-19 1739 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 152 Comment
  POM196098  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  NY43799  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC52134  Lithophragma bolanderi Carol A. Bordin 1983-4-19 19 Butte S Pentz-Magalia Hwy and Hwy 70 intersection, 0.3 mi e of Hwy 70 to Cherokee Rd. ca. 7.2 mi n of Cherokee Rd and ca. 6 mi n of Oroville city limit. Table Mtn. 335 Comment
  CHSC96229  Lithophragma bolanderi R. Fischer 2006-4-21 987 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at bottom of 10 Mile House Road, ca. 250 ft s of gated park property line.. 228 Comment
  CHSC6294  Lithophragma parviflorum L. Lyons 1967-4-27 Butte On south side of Rcihardson's Spring Rd. 1.8 mi e of entrance on n Cohasset Rd. 3.5 mi from Chico. 76 Comment
  RSA633337  Lithophragma parviflorum Michael A. Vincent, Ethan H. Freid 1998-4-6 8133 Butte Table Mountain Comment
  CAS-BOT-BC438121  Lithophragma parviflorum Mary E. Wall 1938-4-15 s.n. Butte Las Plumas Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  CAS-BOT-BC342142  Logfia filaginoides A. A. Heller 1914-6-2 11148 Butte 8 miles north of Oroville Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  CHSC116726  Logfia gallica Lowell Ahart 2016-5-25 20880 Butte On the north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC41557  Lolium multiflorum R. L. Ondricek-Fallscheer 1982-5-26 137 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  CHSC108809  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte On the high bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC116706  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC3151  Lomatium dasycarpum subsp. tomentosum Dona Kingsford 1966-4-23 Butte Location: 2.3 miles SW of Hooker Oak Tree, Chico. Comment
  CHSC87778  Lomatium dissectum var. multifidum Paul Maslin 2004-4-30 30 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 Comment
  RSA724932  Lomatium marginatum L. P. Janeway 2006-5-14 8596 Butte Northern High Sierra Nevada: just west of Jordan Hill Road, 0.9 km east of Sawmill Peak lookout 953 Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  CHSC30824  Lomatium utriculatum M. S. Taylor; J. D. Jokerst 1980-4-18 2534 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CHSC10576  Lonicera interrupta Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  CHSC46357  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 11/2 miles south of Forbestown Road. 670 Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  CHSC200  Lonicera involucrata var. involucrata E. Walker 1932-4-19 Butte Concow reservoir. Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  SEINET10970287  Lotus Mary Susan Taylor 1982-6-24 Taylor 4734 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  SEINET957207  Lotus balsamiferus Lowell Ahart 1987-1 5804 Butte On dry bare distrubed soil, near Big Bar Mountian Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. Comment
  CHSC101744  Lotus corniculatus Lowell Ahart 2009-5-23 15748 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  RSA719534  Lotus denticulatus Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12877 Butte East of Chico along Route 32. Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UC176259  Lotus incanus A. A. Heller 1913-6-7 10797 Butte near Stirling 1074 Comment
  SEINET3694615 Image available Lotus macranthus A. A. Heller 1938-5-28 15125 Butte On Feather River Hwy west of Pulga Comment
  SEINET12161334  Lotus micranthus Unknown 1978-1 19 Butte ca 15.4 mi NE of Chico and 5ft S of Cohasset Hwy. Richardson Springs Quad. NW corner of Sec. 18 280 Comment
  SEINET10906991  Lotus nevadensis Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5224 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  UC600394  Lotus purshianus var. purshianus H. F. Copeland 1932-7-24 Butte by small stream running down from the w to Butte Creek meadows Jonesville, Butte Creek Meadows Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  SEINET10452369  Lotus subpinnatus Mary Susan Taylor 1978-4-14 Taylor 1557 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC112879  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CHSC25320  Ludwigia peploides subsp. peploides Hayes; Warner, Schlising 1977-8-23 46 Butte Found in canal at Gray Lodge State Wildlife Refuge. 50 Comment
  CAS-BOT-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  CHSC84889  Lupinus affinis R. D. Fischer 2003-4-20 5 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
  UC702964  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along Feather River Highway about two mi w Arch Rock Tunnel; along Feather River Highway Comment
  SEINET5558505  Lupinus albifrons H. S. Gentry, S. Koch 1962-1 19777 Butte 14-18 mi. north of Forest Ranch, along Rt. 32. 1066 Comment
  CAS-BOT-BC196035  Lupinus albifrons var. collinus Ira L. Wiggins 1925-3-25 1445 Butte On road one and one half miles above Pence on Pence-Magalia road Comment
  SEINET7073629 Image available Lupinus andersonii A. G. Vestal 1955-5-21 s.n. Butte About 15.3 miles east of Oroville on the Forbestown Road. UTM Zone 10, 645084mE, 4373885mN. Coordinate datum: NAD27. Comment
  SEINET10452024  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  SEINET10484606  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22n,r63,sec.5 sw 1/4. Pulga se quad. In sandy granite, on ridge above foreman Creek, ca 0.5 mile w of 23n15.5, ca 1.5 mile s of its junction with four trees Road, ca 0.5 mile w of oroville-quincy hwy, ca 2 air miles w of elks retreat. Assoc.; Madia minima 1311 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  SEINET5767545 Image available Lupinus arbustus subsp. silvicola A. A. Heller 1917-1 12853 Butte summit above Jonesville 2134 Comment
  SEINET7073625 Image available Lupinus bicolor A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  RSA0045622  Lupinus bicolor subsp. tridentatus Lowell A. Ahart 2012-4-17 17874 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10838149  Lupinus bicolor subsp. tridentatus Johnson 1978-4-16 Johnson 2 Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset Rd. At lassen ave., 3 Mi. N of chico, butte co, calif. At edge of moist Pasture in gravelly loam with grass and other annuals of valley grassland. 61 Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  CHSC34689  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC111346  Lupinus polycarpus Lowell Ahart 2012-5-2 17952 Butte On damp dark clay soil, along the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  CHSC29250  Luzula cascadensis M. S. Taylor 1978-7-18 1719 A Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, ca. 2 mi sw of Jonesville. 1524 Comment
  CDA34738  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC109621  Luzula macrantha Lowell Ahart 2012-5-12 18028 Butte On the south side of the large meadow, south of the deep drainage, about 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. 328 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
  CHSC60591  Luzula macrantha Vernon H. Oswald; Lowell Ahart 1993-4-21 5289 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  JEPS116099  Luzula macrantha Lowell Ahart 2009-5-15 15711 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
  CAS-BOT-BC441208  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3.5 miles SW of Oroville 33 Comment
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC28806  Lycopus americanus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 408 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  CHSC48485  Lycopus americanus Vernon Oswald 1983-10-10 1064 Butte Growing on the e bank of Pine Creek just s of the Calif. Hwy. 32 bridge. Comment
  CHSC94609  Lycopus americanus Lowell Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  HSC86843  Lycopus americanus L. P. Janeway, Heidi Weinert, Scott George 1988-7-27 3093 Butte W of Murphy Slough and across from Golden State Island 38 Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CHSC26643  Madia elegans subsp. densifolia M. S. Taylor 1977-11-12 1541 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  RSA755649  Madia elegans subsp. vernalis L. Ahart 2009-5-23 15726 Butte About 60 yards northwest of Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile west of Highway 32, about 10 miles northeast of Chico. 268 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC109573  Madia exigua L. P. Janeway 2012-6-7 10861 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
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC31572  Madia gracilis L. Ahart 1978-5-30 1744 Butte On dredger piles near North Honcut Creek. Ca. 3 mi ne of Honcut. 50 Comment
  CHSC43622  Madia gracilis Vernon Oswald 1985-6-2 1796 Butte Upper Bidwell Park, Chico, along Upper Park Rd. between the east and west entrance to Parking Area S at Brown's Hole. At the edge of the road where it cuts through a brush- covered slope. 231 Comment
  UC202669  Madia gracilis A. A. Heller 12816 Butte Butte Meadows 1402 Comment
  SEINET10474815  Madia gracilis Mary Susan Taylor 1980-5-31 Taylor 2752 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
  CHSC90838  Madia subspicata Lowell Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  SEINET3441872  Malva parviflora Unknown 2003-5-9 10122 Butte Dobbins, Dobbins, about 3 air miles northeast, about 0.5 miles north of Fountain Hill Road, about 3 miles south of Oregon Hill Road, west side of Fountain Hill road 20 Comment
  UC196260  Marah fabacea A. A. Heller 1914-3-12 11193 Butte Canyon of Big Chico Creek 76 Comment
  CHSC573  Marah fabacea var. agrestis S. Ptomey 1929-4-1 Butte Bidwell Park. 60 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
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  RSA441249  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  RSA718050  Marsilea vestita L. Ahart 2006-8-5 13088 Butte Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC34400  Meconella californica R. N. Bowman 1981-5-21 2083 Butte East-facing slope, s bank of Butte Creek, .1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  SEINET12155158  Medicago arabica P. L. Ricker 1912-1 8952 Butte Chico Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. 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
  CHSC94296  Melica bulbosa Lowell Ahart 2006-7-16 13009 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
  CHSC35664  Melica californica R. E. Preston 1982-4-22 252 Butte Ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi sw of Paradise. 289 Comment
  CHSC6103  Melica californica A. R. Jaegel 1968-4-24 137 Butte On cutbank, 2 mi e of Centerville on Humbug Rd. Comment
  CDA13293  Melica subulata G. F. Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CAS-BOT-BC262498  Melica torreyana John Thomas Howell 1962-6-16 37538 Butte Magalia 731 Comment
  SEINET10599678  Melica torreyana Lowell Ahart 1989-5-10 Ahart 6221 Butte About 1/10 mile north-west of the West branch Bridge across Lake Oroville. Foothill Woodland. Common, growing on dry red rocky soil along a dirt road near a small stream near the lake. 290 Comment
  CHSC33678  Melilotus indicus L. Ahart 1981-5-16 2797 Butte Along the edge of dirt rd on Gray-Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CDA5723  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. 0 Comment
  CHSC25294  Melissa officinalis M. S. Taylor 1977-7-15 1415 Butte On n side of Butte Creek directly beneath Covered Bridge, ca. 8 mi e of Chico. 243 Comment
  CHSC753  Melissa officinalis V. Holt; M. Underhill 1952-7-21 Butte 304 Comment
  CHSC43839  Mentha canadensis B. Castro 1987-8-25 212 Butte At s edge of Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  CHSC50109  Menyanthes trifoliata Vernon Oswald 1990-5-9 4194 Butte Boy Scout Camp at Chico Meadows, ca. 1 mile north of Butte Meadows. Growing in a boggy area on the seepy slope slightly northeast of the 'swimming hole. 1295 Comment
  CHSC43753  Micranthes bryophora Vernon Oswald 1984-7-12 1576 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CHSC3442  Micranthes integrifolia Judy Potter 1966-3-7 Butte Hill east of Honey Run Bridge. Comment
  CHSC45981  Micranthes integrifolia Lowell Ahart 1975-3-18 712 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC11903  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. In swamp. 1550 Comment
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  SEINET10871998  Micropus californicus Mary Susan Taylor 1974-4-20 Taylor 185 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  RSA725057  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  RSA754454  Micropus californicus var. californicus L. Ahart 2009-4-17 15554 Butte S slope of a ridge, about 300 yards W of Highway 32, near the S boundary, Upper Bidwell Park, about 5 air miles NE of Chico. 352 Comment
  UC1070012  Micropus californicus var. californicus C. G. Albertus 1933-7-6 25 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  CAS-BOT-BC348467  Micropus californicus var. californicus A. A. Heller; H. E. Brown 1903-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  RSA126767  Micropus californicus var. californicus C. G. Albertus 1933-6-6 24 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 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
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  UCR188704  Mimulus 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
  HSC66317  Mimulus bicolor Robert A. Schlising 1963-6-7 2619 Butte 3.1 mi. S of Cohasset along Cohasset Hwy. Comment
  SEINET10570196  Mimulus bifidus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7043 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine, woody Plant, corolla apricot color. 701 Comment
  RSA183143  Mimulus breweri E. B. Copeland 1930-7-28 s.n. Butte Neighborhood of Jonesville, along So. Willow Creek 1829 Comment
  UC1609082  Mimulus breweri Lowell Ahart 1993-6-20 6982 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC426955  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Scotch John meadow Jonesville 1700 Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  JEPS108856  Mimulus glaucescens Lowell Ahart 2006-5-10 12614 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  SEINET12319563  Mimulus glaucescens S. E. Patton 1978-1 19 Butte 7.5 mi NE of jct Eaton Rd, S side of Cohosset Hwy 280 Comment
  CHSC118860  Mimulus guttatus Christopher T. Ivey 2017-5-27 392 Butte Honeyrun Road, about 6.5 km NE of bridge crossing Butte Creek, S side of road. 453 Comment
  RSA715566  Mimulus guttatus L. Ahart 2005-5-2 11781 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
  SEINET12332656  Mimulus guttatus D. E. Young 1983-1 18 Butte North Table Mountain, 5 mi W of Cherokee Rd & 1.3 km SW of Oregon Gulch Rd, 7.2 km E of Hwy 70 & 9.2 390 Comment
  RSA34063  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte On the treeless undulating plain of Table Mountain. Comment
  JEPS9651  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  CHSC44790  Mimulus moschatus R. Banchero 1980-7-7 283 Butte Along County Rd 0.9 mi E of the town of Feather Falls. 975 Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  UC1012174  Mimulus nasutus F. W. Pennell and A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  UC886330  Mimulus pulsiferae A. A. Heller 1915-4-12 11805 Butte near Cohasset; Sierra foothills Comment
  POM173736  Mimulus torreyi H. F. Copeland 1927-9-2 957 Butte Jonesville. Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  UC56384  Mimulus tricolor Mrs. R. W. Summers 1886-5 Butte Comment
  POM285522  Minuartia californica Lyman Benson 1935-3-27 6359 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 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
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  UCSB44147  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road; from Highway 70 Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC102399  Mollugo verticillata Lowell Ahart 2009-8-13 16274 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS93834  Mollugo verticillata Lowell Ahart 1998-7-1 8029 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, in the tracks of poor dirt road about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CAS-BOT-BC435071  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CDA3377  Mollugo verticillata T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 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. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  CHSC10724  Montia fontana subsp. chondrosperma Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  CHSC98947  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-8 14717 Butte Below the high water line of Lake Oroville, about 150 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC70812  Montia linearis B. Castro 1995-5-18 571 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  CAS-BOT-BC264286  Muhlenbergia andina Lowell Ahart 1981-9-19 3182 Butte Arch Rock Tunnel, Hwy. 70, Sierra Nevada 550 Comment
  CAS-BOT-BC260541  Muhlenbergia filiformis Clarence R. Quick 1963-7-16 63 54 b Butte Section Corner Meadow, E of Pulga, Feather River Canyon 1463 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CAS-BOT-BC274935  Muhlenbergia rigens Lowell Ahart 1982-10-15 3896 Butte N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  JEPS113276  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  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
  CHSC85417  Myriophyllum spicatum John Dittes 2003-10-8 844 Butte 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. 36 Comment
  JEPS98993  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles SE of Oroville. 38 Comment
  CHSC42138  Narthecium californicum Lowell Ahart 1984-7-19 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1600 Comment
  UCD87726  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Grade to Paradise. Comment
  RSA754858  Nassella pulchra L. Ahart 2009-4-26 15617 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC42498  Navarretia capillaris Lowell Ahart; Vern Oswald 1987-6-10 5746 Butte Around a meadow, at Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  UC600661  Navarretia capillaris E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek (Jonesville); , btw Jones Creek and Willow Creek 1700 Comment
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC65457  Navarretia divaricata subsp. vividior Vernon Oswald 1986-5-6 1999 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC27034  Navarretia filicaulis Robert A. Schlising 1978-6-11 3290 Butte Cohasset Road, below Cohasset, 5.5 mi NE of crossing of Mud Creek and 5.3 mi above (NE) jct rd to Richardson's Springs; ridge top. Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  SBBG58255  Navarretia filicaulis E. B. Copeland 1932-6-24 Butte near Hog Springs, ca. 5 mi N of Chico on the Humbolt Rd Comment
  SEINET7373988 Image available Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Three and one-quarter miles SW of Forbestown, intersection of Forbestown Rd. and Black Bart Rd. 150 yds E of intersection. Comment
  UCD48400  Navarretia filicaulis M. S. Taylor; J. D. 1979-6-12 2297 Butte Off dirt rd from Magalia serpentine area to Feather River, ca. 0.5 mi up from the river. 670 Comment
  UC1719845  Navarretia heterandra David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC36712  Navarretia intertexta D. H. Ikeda 1980-5-26 389 Butte 1.4 mi w of intersection of Lunt Rd. and Nelson-Bar Rd. Comment
  RSA716060  Navarretia intertexta L. Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville. 52 Comment
  CHSC91267  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  POM129395  Navarretia leptalea Mrs. R. M. Austin 1896-07 258 Butte Colby Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  CHSC12747  Navarretia pubescens L. V. Ritter 1969-5-5 262 Butte Ca 200 yds. w of Horseshoe Lake, Bidwell Park, 50 yds. n of the Park Rd. Comment
  CHSC36710  Navarretia pubescens D. H. Ikeda 1980-5-10 349 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in field. Comment
  POM65860  Navarretia pubescens A. A. Heller, H. E. Brown 1902-5-14 5547 Butte Berry Canyon (near Clear Creek) Comment
  UCD48660  Navarretia tagetina M. Vincent 1963-6-5 381 Butte Pentz road 5 miles south of Paradise. Roadside. Comment
  CHSC27501  Navarretia viscidula subsp. purpurea Robert A. Schlising 1978-5-29 3283 Butte Bidwell Park, Chico, near the end of paved road at golf course and old rifle range. Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC7184  Nemophila alata H. E. Brown 1897-3-3 173 Butte Near Clear Creek 53 Comment
  SD60314  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte Along Chico creek about 4 miles east of Chico in the Quercus lobata belt. Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  SBBG29928  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  POM199585  Nemophila spatulata H. F. Copeland 1932-6-29 s.n. Butte Jonesville. Above meadow by Butte Creek. Comment
  UCD14585  Notholithocarpus densiflorus Robert Willoghby 1985-12-17 s.n. Butte California, Butte Co.; Forbestown, ca. 2-3 miles northwest of Challenge Station (by air), on the Kenneth Haddick property (ca. 150 acres with old homestead, some pasture and cows, but largely Pinus ponderosa and Pseudotsuga menziesii timberland), Comment
  UCD137710  Nuphar polysepala Herbert L. Mason; Verne Grant 1946-8-14 13029 Butte Sacramento Outing Club. Butte Sink. Comment
  CHSC26845  Nymphaea odorata M. S. Taylor 1978-6-23 1635 Butte Irrifation ditch, ca. 5 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  SEINET10472784  Odontostomum hartwegii Lowell Ahart 1985-5-15 Ahart 4980 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  UCD113663  Oemleria cerasiformis Vernon H. Oswald 1994-3-30 6034 Butte In Beatson Hollow on North Table Mtn., along a jeep road 0.7 mi W of Cherokee Rd. Branch. 304 Comment
  CHSC116672  Ophioglossum californicum Lowell Ahart 2016-2-22 20741 Butte About 150 yards south of the north fence line, about 1/2 mile east of dthee 'S' turn in Dunstone Drive, about 4 1/4 miles northeast of Honcut. 66 Comment
  CHSC45636  Oreostemma alpigenum var. andersonii Vernon Oswald 1987-5-11 2385 Butte Chico Meadows ca 1 mi N of Butte Meadows. 1292 Comment
  UC600724  Oreostemma alpigenum var. andersonii H. F. Copeland 1931-6-11 1534 Butte Butte Creek Meadows 1828 Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  SEINET10500390  Orobanche fasciculata Mary Susan Taylor 1980-5-15 Taylor 2640 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
  JEPS95517  Orobanche uniflora Lowell Ahart 1994-4-22 7286 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  CAS-BOT-BC213922  Orthocarpus bicolor A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  POM43591  Orthocarpus erianthus R. M. Austin 1883-03 28 Butte [No location information provided.] Comment
  SEINET10549676  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 2 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC6995  Orthocarpus lacerus Amos Arthur Heller; H. E. Brown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10454524  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5119 Butte About 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, abut 9 miles northeast of Feather Falls. Comment
  CHSC89745  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  UC1594566  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC4056  Oxalis corniculata J. Wheeler 1967-5-20 29 Butte In lawn at 248 Serviss St. Durham. Comment
  JEPS122162  Oxypolis occidentalis Lowell Ahart 2014-8-13 19703 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA724822  Oxypolis occidentalis L. Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 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
  CAS-BOT-BC316886  Packera eurycephala var. lewisrosei John Thomas Howell 1967-6-22 42619 Butte Magalia 701 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  SEINET10948596 Image available Packera eurycephala var. lewisrosei Lewis S. Rose 1939-6-7 Rose 39247 Butte North Fork of Feather River. 3 mi. s. of Pulga. Canyon side. 610 Comment
  CHSC45339  Paeonia brownii Vernon Oswald; Lowell Ahart 1987-5-14 2900 Butte Ca. 2.75 mi ne of Jonesville on the road paralleling Scotts John Creek, 1.9 mi n of the road connecting Humboldt and Humbug Roads. Common on the edge of an alder thicket bordering the creek. 1828 Comment
  CHSC111736  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte About 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  RSA29937  Panicum capillare I. L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  UCD88690  Paspalum boscianum Elizabeth Wilson 1934-8-9 s.n. Butte Biggs Rice Station. Comment
  CHSC37391  Paspalum dilatatum R. A. Schlising 1980-8-31 3973 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
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC48898  Pectiantia breweri Vernon Oswald 1987-6-29 3035 Butte Jones Meadow Rd. e of Inskip at a small streamlet which joins Last Chance Creek just downstream from its East Fork. 1676 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 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
  CHSC103679  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 Butte Below rim and above cliffs, 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
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  CHSC49020  Pedicularis densiflora Vernon Oswald 1984-4-9 1123 Butte Feather Falls Trail, 0.6 trail mi n of the trail head at the end of Bryant Ravine Rd. 731 Comment
  UC725511  Pedicularis densiflora A. A. Heller 1939-3-23 15358 Butte Paradise Comment
  CAS-BOT-BC71201  Pellaea andromedifolia Ira L. Wiggins 1925-3-22 1487 Butte Chico Creek Canyon about five miles above Chico Comment
  CAS-BOT-BC71200  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  UC122746  Pellaea andromedifolia Mrs. R. M. Austin April 1883 77 Butte Little Chico Canyon Comment
  CHSC58  Pellaea mucronata V. Holt 1935-3-17 Butte Salmon Hole on Chico Creek. 550 Comment
  SEINET11713847  Pellaea mucronata Unknown 4 s.n. Butte no further locality Comment
  CHSC44732  Penstemon azureus R. Banchero 1980-5-7 143 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC114681  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Roadside, Highway 70, Jarboe Gap. 'Near Poe Power House'. Comment
  UC726756  Penstemon azureus var. angustissimus A. A. Heller 1940-6-5 15701 Butte along the Feather River Highway e of the first [Feather River] crossing; along the Feather River highway e of first crossing Comment
  CHSC64668  Penstemon azureus var. azureus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with hwy 70. 1010 Comment
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  RSA712797  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  CHSC26686  Penstemon gracilentus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1485 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  CHSC33337  Penstemon gracilentus R. Banchero; R. Schlising 1980-7-31 325 Butte Ca. 1.4 mi e of Snag Lake (East end). 1950 Comment
  NY601766  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles north of Chico. Comment
  CHSC30303  Penstemon laetus var. leptosepalus M. S. Taylor 1980-5-27 2730 Butte N side of Oroville-Quincy Hwy, ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC44698  Penstemon laetus var. leptosepalus R. Banchero 1980-6-17 228 Butte Along Bald Rock Rd, 0.2 mi E of its jct with Zink Rd, 4.6 mi E of its jct with Hwy 162. 731 Comment
  CHSC44713  Penstemon laetus var. leptosepalus R. Banchero 1980-6-26 264 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32. 1219 Comment
  UCSB63872  Penstemon neotericus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; on the west side of Little Kimshew Creek, where the basalt is eight sided; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CAS-BOT-BC245684  Penstemon newberryi var. newberryi Lowell Ahart 1980-5-19 2312 Butte Near bridge, South Fork of Feather River, Sierra Nevada 800 Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  UC122974  Pentagramma pallida Mrs. R. M. Austin May, 1883 84 Butte Iron Canyon above Chico Comment
  CHSC21012  Pentagramma triangularis M. S. Taylor 1974-4-30 199 Butte S side of Cohassett Rd, ca. 7 mi ne of Chico. 304 Comment
  CHSC31464  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-1-5 3368 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC40225  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1855 Butte Humbug Rd. near Willow Creek culvert. 1853 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC40219  Perideridia lemmonii Lowell Ahart 1985-7-9 5112 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  JEPS115269  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 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
  CHSC40241  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1898 Butte Philbrook Rd. ca. 0.1 mi e of Humbug Rd. at the road leading to W. Branch Camp. 1463 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC94597  Persicaria lapathifolia Lowell Ahart 2006-9-11 13289 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-BC418954  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  CHSC21144  Persicaria maculosa M. S. Taylor 1975-10-3 924 Butte Abundant in mud on Big Chico Creek, under bridge over River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS124337  Persicaria maculosa Lowell Ahart 2015-10-16 20556 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC42055  Persicaria pensylvanica Lowell Ahart 1986-11-14 5457 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin road, about 6 miles south-west of Oroville. 36 Comment
  CDA42927  Persicaria punctata L. Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC101313  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the 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
  CHSC96551  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  HSC23287  Petrorhagia dubia T. C. DeWitt 1971-4-4 26 Butte 5.6 mi. NW of Oroville on Table Mtn. W side of rd. 213 Comment
  CHSC25277  Petroselinum crispum K. R. Stern 1977-4-25 Butte Comment
  CHSC51524  Phacelia cicutaria J. D. Jokerst 1985-4-23 2262 Butte Top of North Table Mountain. East edge of Beatson Hollow near the second drainage entering from the east. 365 Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  CHSC40595  Phacelia egena Ahart; Jokerst 1985-3-24 4857 Butte Serpentine Point, west of Yankee Hill, around large rock outcroppings. 550 Comment
  UC175560  Phacelia imbricata A. A. Heller 1913-6-6 10786 Butte 8 mi n Oroville; Table Mountain 182 Comment
  CHSC105820  Phacelia mutabilis Lowell Ahart 2010-9-28 17269 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC39104  Phacelia mutabilis R. A. Schlising 1982-7-21 4335 Butte N part of county, at E end of Philbrook Reservoir. 1691 Comment
  CHSC39122  Phacelia procera R. A. Schlising 1980-7-5 3838 Butte First crossing of Butte Creek on main road, e of Butte Meadows; at immediate roadside in region of streamside vegetation. 1341 Comment
  CHSC39116  Phacelia vallicola L. Ahart 1982-6-4 3534 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC48477  Phacelia vallicola Vernon Oswald 1986-4-28 1982 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CHSC6109  Phalaris caroliniana A. R. Jaegel 1968-4-19 143 Butte 2 mi s of Cherokee in field (3/4 mi w of 1st gate at top of Table Mountain, gate about 1 mi from Oregon City cutoff on Cherokee Rd.). Comment
  UC1594547  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  CAS-BOT-BC77369  Philadelphus lewisii C. C., Mrs. Bruce 1897-5-1 1785 Butte Little Chico Creek Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  CDA13299  Phleum pratense G. F. Hrusa, T. D. Wilfred 1996-7-9 13147 Butte Plumas National Forest; Few individuals on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC11788  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  HSC100733  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 210 Comment
  JEPS115277  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 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
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC48856  Physocarpus capitatus Vernon Oswald; M. S. Taylor 1985-5-30 1789 Butte Four Trees Rd. 0.5 mi e of Hwy 70. Along the road. 536 Comment
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  UCD98425  Phytolacca americana var. americana B. F. Smith 1968-10-9 92 Butte 1 mile west of Old Forbestown, Plumas National Forest. 853 Comment
  NY61952  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CHSC109616  Pinus sabiniana Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18019 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 miles of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10872492  Piperia elegans Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4051 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC103950  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  CHSC86581  Piperia elongata L. P. Janeway; Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CHSC84186  Piperia transversa Lowell Ahart 2003-6-30 10328 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CHSC110980  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  UC2026875  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529965  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-3-16 Taylor 3408 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
  CAS-BOT-BC227981  Plagiobothrys H. E. Brown 1897-4-4 165 Butte Near Clear Creek 53 Comment
  POM287608  Plagiobothrys Lyman Benson 1935-3-27 6365 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC7059  Plagiobothrys austiniae Lynn R. Thomas 1969-3-3 3 Butte S edge of Humboldt Rd., 1.4 mi e of junction with Stilson Canyon and Bruce Rds., or 3.3 mi e of US 99 freeway underpass, Chico. 152 Comment
  CHSC13487  Plagiobothrys canescens S. Poe 1974-4-22 15 Butte Adjacent to Fern Bank area, upper Bidwell Park. Comment
  POM196508  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  UC79364  Plagiobothrys cusickii Mrs. R. M. Austin Butte Comment
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  UCD18741  Plagiobothrys glyptocarpus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 34 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 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
  POM223244  Plagiobothrys greenei H. F. Copeland 1923-4-12 604 Butte near Biggs Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC104001  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC112938  Plagiobothrys stipitatus var. micranthus B. Castro 2012-5-29 1926 Butte Sacramento Valley. Between E. Hamilton Rd and the S edge of the Thermalito Afterbay levee, ca 0.6 mi E of Hwy99. 35 Comment
  CHSC32155  Plagiobothrys stipitatus var. micranthus L. Ahart 1980-5-10 2226 Butte Peter Ahart Ranch, Honcut. On bottom of a small wash in farmed field, ca. 2.5 mi n and 1/4 to 1/2 mi e of Honcut. 50 Comment
  CHSC54380  Plagiobothrys stipitatus var. micranthus M. Bailey 1991-4-19 565 Butte At margin of seasonal drainage ca 200 ft e of Williams Road and ca 1/4 mi n of Pentz Road; near Wallis Ponds. 85 Comment
  JEPS120959  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  JEPS123826  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  UCD80162  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-12 SNFN 0077 c Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET516431  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1974-1 406 Butte Normal size plants, growing on damp red soil at the bottom of a swale, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC43553  Plagiobothrys tenellus Lowell Ahart 1978-4-19 1652 Butte Along the trail, about 1/2 mile south of Feather Falls, about 5 miles north of the town of Feather Falls. 548 Comment
  CHSC36306  Plantago coronopus M. S. Taylor 1982-4-28 4346 Butte Graylodge Waterfowl Refuge roadsides, n side of Rutherford Rd, just w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC71186  Plantago coronopus Lowell Ahart 1998-6-9 7984 Butte At the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC77990  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte On the edge of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC24953  Plantago elongata Ron Stewart 1976-3-24 Butte Ca 40 yds sw of the Broyles Road, -Hwy 99 intersection. 73 Comment
  CHSC82233  Plantago elongata Lowell Ahart 2002-3-16 9417 Butte On the bottom and sides of a depression, on the north side of a poor dirt road, about 50 yards north of Highway 32, about 1/4 mile east of the intersection of Bruce Road and Highway 32, east of Chico. 73 Comment
  CHSC83954  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, about 20 yards south of a faint poor dirt road, pasture field, about 150 yards southwest of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CDA42161  Plantago elongata L. Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut. 0 Comment
  CHSC101334  Plantago erecta Lowell Ahart 2009-4-22 15584 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC109132  Plantago erecta Lowell Ahart 2012-3-23 17778 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
  CHSC33393  Plantago erecta Tamara Anderson 1978-4-23 12 Butte Ca. 3.2 mi. s of jct. of Neal Rd. and Skyway, Paradise. 50 yds. ne of Skyway on cliffs. 339 Comment
  SEINET10499852  Plantago erecta Mary Susan Taylor 1980-3-1 Taylor 2353 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET12318336  Plantago hookeriana Unknown 1978-1 18 Butte S side Hwy 32, ca 7.5 mi E jct Hwy 99 & 32 at Chico 515 Comment
  UCD22636  Plantago hookeriana var. californica Joseph Laferriere 1982-4-18 6 Butte 3 miles south of Oroville on Hwy 70, roadside hilltop 1/4 mile south of jet Baggett-Marysville Rd. 65 Comment
  CHSC88176  Plantago major Lowell Ahart 2004-7-23 11302 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS3266  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte About 3 mies south of Cherokee on road Oroville. 335 Comment
  JEPS102499  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) SW of Oroville. 42 Comment
  JEPS118330  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  CAS-BOT-BC91594  Platystemon californicus Ira L. Wiggins 1925-3-22 1492 Butte At roadside about one mile below Five Mile Dam on Chico Creek. Three miles above Chico. Comment
  RSA325088  Plectritis ciliosa M. S. Taylor 1981-4-5 3491 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  SEINET10464979  Plectritis ciliosa Mary Susan Taylor 1975-3-10 Taylor 415 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  JEPS127607  Plectritis congesta subsp. brachystemon L. P. Janeway 2015-4-21 11666 Butte Plumas National Forest; SW side of Old Forbestown Road, 0.8 road km N of Forbestown Road and New York Flat Road. Comment
  SEINET10905832  Plectritis congesta subsp. brachystemon Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5236 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC24979  Plectritis macrocera J. Cox 1976-3-10 39 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  POM68797  Plectritis macrocera subsp. macrocera C. C. Bruce 1897-04 1882 Butte Little Chico. Comment
  CHSC113297  Poa annua Lowell Ahart 2014-4-9 19324 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC94258  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
  SEINET10508290  Poa bolanderi Lowell Ahart 1985-7-16 Ahart 5147 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1829 Comment
  SEINET10888236  Poa bolanderi A. Arthur Heller 1917-7-29 Heller 12868 Butte Summit above Jonexville in granite. In open forest of Abies magnifica. Undershrubs are Uva-ursi Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  SEINET11688462  Poa bolanderi Unknown 1985-1 5147 Butte along Willow Creek, near Section Corner of Sections 17, 16, 20, & 21, ca 4 mi E of Cherry Hill 1829 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." Comment
  CHSC113420  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest 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. 1561 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  SEINET10659346  Poa scabrella Prouty 1980-4-17 PROUTY 80 .99 Butte Oak-Foothill Woodland off of Yankee Hill Rd. T21N, R4E, Sec 4, SE 1/4. 518 Comment
  SEINET10822308  Poa scabrella James D. Jokerst, Robert A. Schlising; Lowell Ahart 1982-5-8 Jokerst 1561 Butte Locally abundant on open steep serpentine slope adjacent on road to Forbestown Resv. just S of the North Fork of the Feather River, T20N, R7E nw1/4 se1/4 sec. 32. Comment
  RSA712924  Poa secunda L. Ahart 2006-5-10 12615 Butte On the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga. 355 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  JEPS120576  Poa sierrae L. P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon + / - overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. Comment
  SEINET10508319  Poa tenerrima Mary Susan Taylor 1980-3-15 Taylor 2382 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  CHSC7066  Pogogyne zizyphoroides Darron Cook 1969-4-22 69 Butte Roadside ca. 3 mi. w off Pentz. S. side Pentz Rd. Comment
  CHSC64205  Polemonium occidentale S. C. Morey 1983-7-23 586 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. Meadow. 1414 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC44418  Polygala cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  RSA76964  Polygala cornuta var. cornuta F. W. Peirson 1926-6-21 6764 Butte About 10 miles east of Chico on Humboldt Road. Comment
  CHSC50680  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte On the north edge of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 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
  CHSC28768  Polygonum bidwelliae J. D. Jokerst 1978-5-21 125 Butte Ca. 200 mets. N. W. of Hwy 32, 7.7 mi. N. of Chico, top of ridge. 365 Comment
  CHSC28730  Polygonum californicum Robert Schlising 1979-10-4 3493 Butte Old archery range in Bidwell Park, Chico, just e of lake. Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  UC1609060  Polygonum douglasii subsp. douglasii Lowell Ahart 1993-6-20 6984 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CDA2788  Polygonum hydropiper L. Ahart, Vernon Oswald 1999-10-3 8293 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
  SEINET10479466  Polygonum hydropiper Lowell Ahart 1983-9-17 Ahart 4437 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  JEPS103454  Polygonum lapathifolium Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC69111  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte Around rocks, near some steamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SEINET10479659  Polygonum parryi Mary Susan Taylor 1986-5-6 Taylor 5618 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  SEINET10479668  Polygonum persicaria Mary Susan Taylor 1977-10-10 Taylor 1513 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 Comment
  UC1594696  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte Coon Hollow; sides of snow lake on s side, about 2 air mi ne of Philbrook Reservoir 1737 Comment
  CDA22844  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  CHSC39819  Polypodium calirhiza Ruby Gist 1935-4-26 Butte Fern Banks. Comment
  CAS-BOT-BC76866  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  CAS-BOT-BC232964  Polypogon australis Lowell Ahart 1979-6-9 s.n. Butte 2 miles SE of Paradise, near Kunkle Creek 500 Comment
  CAS-BOT-BC233062  Polypogon interruptus A. A. Beetle 1941-6-27 1745 Butte Near Lomo, 13 miles W of Chester, near road to Chico Creek Comment
  CDA5623  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC116024  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS107782  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  CHSC37109  Polypogon maritimus L. Ahart 1982-10-15 3888 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  SEINET10959317  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart s.n. Butte T22N R6E sw sec. 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest Comment
  JEPS117719  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico 197 Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC116273  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20577 Butte On the west side of Slate Creek Resevoir, about 100 yards northwest of the intake building, about 2 1/4 miles (air) northeast of La Porte Road, about 6 miles (air) southwest of La Porte. 1128 Comment
  JEPS106115  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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May 14 2014
  SEINET10530128  Polystichum munitum Mary Susan Taylor 1981-5-14 Taylor 3708 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
  POM107428  Populus fremontii subsp. fremontii C. C. Bruce 1897-05 1791 Butte Little Chico. Comment
  CAS-BOT-BC102692  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte south of the dirt road, about 1/2 miles south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UCD100118  Portulaca oleracea Malcolm A. Nobs; S. Galen Smith 1949-6-29 1087 Butte Butte Creek, on road from Biggs to Princeton. Comment
  CHSC38889  Potamogeton diversifolius Vernon Oswald 1983-6-3 617 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CAS-BOT-BC453685  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC453687  Potamogeton gramineus H. F. Copeland 1930-7-29 1536 Butte Jonesville 1828 Comment
  CHSC31817  Potamogeton illinoensis L. Ahart 1977-9-8 1569 Butte In North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC539446  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  UCR66579  Potentilla norvegica H. F. Copeland 1928-8-22 1066 Butte Jonesville 1524 Comment
  CHSC39550  Proboscidea louisianica Lowell Ahart 1983-7-10 4192 Butte On the bottom of a dry pond, in front of the large barn, near the two large barns, about 1 1/2 miles north-east of the intersection of Highway 99 and Pentz Road, about 14 1/2 miles north of Oroville. 70 Comment
  CHSC37530  Proboscidea lutea M. S. Taylor; L. Ahart 1982-10-11 5158 Butte Graylodge Wildlife Refuge, just se of HQ quad, 12 mi sw of Gridley. 19 Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  CDA27702  Prosopis glandulosa var. torreyana L. Ahart, M. G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  CHSC94460  Prosopis glandulosa var. torreyana Lowell Ahart; Mike G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 Comment
  CHSC64044  Prunella vulgaris var. lanceolata S. C. Morey 1983-8-4 715 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  JEPS108578  Prunus avium L. P. Janeway, C. Christofferson, M. Brown, S. Mackey Hillaire 2005-4-19 8363 Butte Northern High Sierra Nevada. Plumas National Forest; in small upper drainage of Flea Valley Creek, about 560 m east-northeast of junction of Concow Road and Rim Road (Ponderosa Way) 841 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
  JEPS120056  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18071 Butte On the sides of the horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CDA38804  Prunus dulcis L. P. Janeway 2012-3-6 10792 Butte Sacramento Valley; Southern edge of Chico; fence-line along west side of Hwy 99 just south of Estates Drive. Comment
  CAS-BOT-BC159918  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CAS-BOT-BC159920  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  UCD113182  Prunus emarginata H. F. Copeland 1929-6-10 s.n. Butte Jonesville. 1524 Comment
  UC2026867  Prunus ilicifolia subsp. ilicifolia Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  RSA595071  Prunus persica var. persica J. T. Howell 1976-7-14 51816 Butte Feather River Canyon Hwy, just E of Jarbo Gap SW of Bucks Lake on road to Oroville. 640 Comment
  CAS-BOT-BC154609  Prunus subcordata Lowell Ahart 1990-3-19 6420 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 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
  JEPS117188  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CAS-BOT-BC361739  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CHSC48191  Psilocarphus oregonus Vernon Oswald 1987-4-15 2327 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  JEPS120953  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  SFV10343  Psilocarphus tenellus M. L. Vincent 1963-6-8 403 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UCD116916  Ptelea crenulata Collector Unknown 1925-5-17 1743 Butte Marysville Buttes. Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  SEINET10454558  Pteryxia terebinthina var. californica Mary Susan Taylor 1979-7-21 Taylor 2160 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC54356  Pycnanthemum californicum L. P. Janeway 1989-5-19 Butte Vicinity of Sawmill Peak; along Jordan Hill Road ca 7 3/4 mi n of Concow Road. 944 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  SEINET178132  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  RSA0080633  Pyrola dentata H. F. Copeland 1928-8-18 1018 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CHSC108797  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  UC1135490  Quercus berberidifolia J. E. Sowder 1933-6-14 113 Butte .12 mi n 13 Mile House; Chico Quad. 609 Comment
  POM106268  Quercus chrysolepis C. C. Bruce 1898-05 1805 Butte Forest Ranch Comment
  CHSC109601  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18120 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking area, Lower Bidwell Park Chico. 76 Comment
  SEINET10477873  Quercus dumosa Mary Susan Taylor Taylor 995 Butte Bidwell Park, Chico. Comment
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  JEPS38008  Quercus garryana var. breweri A. E. Wieslander 1927-6-29 Butte Humboldt road from Chico (Fourteen-mile House) Comment
  CHSC90047  Quercus kelloggii Rhonda Posey 1991-4-16 20 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  CHSC96799  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  UCR231085  Quercus kelloggii Anna M. Hurlbutt 2009-8-12 015 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  UCD47602  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Road to Table Mtn from Oroville. 293 Comment
  CHSC97403  Ranunculus alismifolius var. alismellus Robert Fischer 2006-6-11 1009 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 the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 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
  SEINET10536065  Ranunculus aquatilis var. capillaceus Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4183 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  CHSC29054  Ranunculus aquatilis var. hispidulus R. A. Schlising 1980-4-2 3541 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay; in ditches. Comment
  CHSC41528  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-27 356 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. In stream. 1706 Comment
  CHSC46843  Ranunculus bonariensis var. trisepalus Kirsten Tarp 1983-4-3 261 Butte SW of Bangor; vernal pool. 73 Comment
  CHSC45401  Ranunculus flammula var. ovalis Lowell Ahart 1981-8-15 3032 Butte Bottom of Snag Lake, on the north side of Snag Lake, about 10 miles north of Inskip. 1371 Comment
  CHSC32725  Ranunculus hebecarpus M. S. Taylor 1981-4-8 3492 Butte Rd embankment at end of Dark Canyon Rd, around the turnout near the restroom, up from the boat ramp to the West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC115433  Ranunculus muricatus Ariana Gehrig 2013-5-9 Butte City of Chico. Lawn on campus. 64 Comment
  UCD80710  Ranunculus muricatus CNPS SN Foothill Team 2005-4-14 SNFN 0033 d Butte Rock Ranch (private), in the horse pasture, near the NE corner of the pasture located west of the barn and house; plot is ca. 10 m from corner of pasture fence. 105 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  CHSC113393  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  RSA4437  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  UC204566  Rhamnus rubra A. A. Heller 1914-5-17 11404 Butte between 14 Mile House and Forest Ranch; Sierra Nevada 731 Comment
  RSA712976  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nva, open serpentine bowl on W side of Concow road 3.2 miles NE of the upper end of Concow Reservoir. 860 Comment
  CHSC13517  Rhododendron occidentale A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CAS-BOT-BC168023  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte In openings south of Oregon Gulch Road, about 1/2 mile north of the [Cementery] Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CHSC20055  Rhus aromatica M. S. Taylor 1975-4-25 505 Butte Scattered on Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC38911  Rhynchospora californica Vernon Oswald 1983-6-9 653 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1400 ft e of Salmon Hole Parking Lot. 182 Comment
  CHSC89896  Rhynchospora californica L. P. Janeway 2004-12-11 8326 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope about 350 m north of Parking Lot F; west side of major ephemeral drainage about 240 m west of upper high voltage power lines. Seep about 50 m long, 25 m wide. 116 Comment
  JEPS98291  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS98301  Rhynchospora capitellata Lowell Ahart 2000-6-27 8521 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UC1260479  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte near Bean Creek Rd. (se of Little Bald Rock, ne of Oroville) 1100 Comment
  UC726482  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte near Stirling; Feather River 975 Comment
  RSA0022850  Ribes nevadense H. F. Copeland 1928-8-18 217 Butte Neighborhood of Jonesville. 1524 Comment
  SBBG126087  Ribes roezlii L. Ahart 2012-2-22 17753 Butte S side of Ten Mi House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 387 Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  CAS-BOT-BC362954  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37559 Butte Magalia 731 Comment
  SBBG119803  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville 31 Comment
  SEINET10940298  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 Ahart 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC36687  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-5-19 289 Butte In meadow; 1/4 mi n of Fall River Campground. 1021 Comment
  CHSC98950  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 A Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS120598  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC98952  Rorippa nasturtium-aquaticum Lowell Ahart 2008-5-21 14788 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
  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
  CHSC58894  Rorippa palustris var. occidentalis Lowell Ahart 1992-4-7 6745 Butte On the bottom and sides of irrigation ditches, on the south side of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC65428  Rosa bridgesii Vernon Oswald 1987-5-28 2939 Butte Concow Rd. 0.4 mi s of Flea Valley. 1097 Comment
  SEINET10483516  Rosa gymnocarpa Mary Susan Taylor 1980-9-12 Taylor 3333 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  UC1609469  Rosa pisocarpa subsp. ahartii Vernon H. Oswald and Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  HSC97124  Rosa woodsii subsp. ultramontana L. Ahart 2005-7-13 12144 Butte 20 yds. S of intersection of Forbestown Rd. and Black bart Rd., 3.5 air mi. SW of Forbestown, 12 air mi. E of Oroville 749 Comment
  POM206580  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC60996  Rotala ramosior Lowell Ahart 1993-6-13 6959 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS120765  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  UCD103090  Rotala ramosior E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  UCD103092  Rotala ramosior June McCaskill; G. D. Barbe 1990-9-5 4369 Butte Rice Experiment Station, West Hamilton Road at Riceton Highway, N of Biggs. Comment
  JEPS119763  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC148349  Rubus laciniatus Lowell Ahart 1984-6-10 4696 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  UC650296  Rubus laciniatus E. B. Copeland 1940-8-6 Butte Forest Ranch Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  SEINET5735589 Image available Rubus parviflorus Lowell Ahart, Peter Ahart 1984-1 4695 Butte About 2 mi. SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; Forbestown 700 Comment
  CHSC45819  Rubus ursinus L. P. Janeway 1987-5-10 2033 Butte Near beginning of Butte Cr Tr, downstream of Forks of Butte and of the bridge (Doe Mill Rd). 640 Comment
  JEPS115188  Rumex acetosella Lowell Ahart 2009-6-19 15940 Butte On dry soil, open area north of a 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
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC36510  Rumex crispus L. Ahart 1982-5-29 3451 Butte In a farmed field, near the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC111171  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. About 60 yards west of Parking Lot 14. 19 Comment
  SEINET10479779  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1978-7-21 Taylor 1824 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
  CAS-BOT-BC434070  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC42737  Sagina apetala Lowell Ahart 1987-5-6 5515 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS122222  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  JEPS102545  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC75536  Salix eastwoodiae Vernon H. Oswald 1999-6-15 9769 Butte Adjacent to Butte Creek at the Lassen National Forest boundary between Butte Meadows and the bridge at Cherry Hill. 1414 Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  SEINET10965409  Salix exigua Mary Susan Taylor 1982-5-22 Taylor 4498 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  JEPS119591  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UCD110804  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte Jonesville, by Butte Creek. 1500 Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  HSC102781  Salix gooddingii L. Ahart 2012-4-20 17893 Butte About 9 air miles NE of Chico, ~0.6 mi. west of Hwy. 32; ~100 yds. south of the intersection of South Rim Trail and Ten Mile House Road, ~50 yds. SW of table at old homestead; on east side of dam, east of South Rim Trail. 259 Comment
  JEPS119845  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southeast of intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC65011  Salix laevigata Vernon Oswald 1987-3-26 2298 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. 73 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  CAS-BOT-BC106982  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville 487 Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  JEPS119584  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  UC204568  Salix lasiolepis A. A. Heller 1914-4-27 11324 Butte banks of a winter stream 8 mi n Oroville Comment
  SEINET10538854  Salix lasiolepis Mary Susan Taylor 1981-3-24 Taylor 3434 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
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  CAS-BOT-BC129585  Salix lasiolepis var. lasiolepis A. A. Heller 1915-4-20 11858 Butte In the digger pine and oak belt, 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CAS-BOT-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-BC129624  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36779 Butte Jarbo Gap, Feather River Highway - Sierra Nevada 60 Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CAS-BOT-BC124576  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  LA208857  Salix lemmonii E. B. Copeland; 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750.0 Comment
  RSA4400  Salix lemmonii E. B. Copeland 1931-6-11 620 -a Butte Jonesville. Kirby's Meadow. 1750 Comment
  UC446429  Salix ligulifolia E. B. Copeland 1931-6-10 Butte below <Copeland> house between Copeland meadows Jonesville (above lower meadow) 1500 Comment
  CHSC21074  Salix lucida subsp. lasiandra M. S. Taylor 1975-10-3 942 Butte Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC129486  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CHSC42771  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  UCD99300  Salsola ryanii G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley: East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC13717  Salsola tragus M. S. Taylor 1974-10-11 332 Butte Abundant in weed field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC52066  Salvia columbariae R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yds W of road. 419 Comment
  SEINET12320802  Sambucus caerulea Unknown 1974-1 s.n. Butte ca 6mi NE of Chico Municipal Airport on Cohasset Rd 518 Comment
  POM219484  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  CAS-BOT-BC238622  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte 8 miles north of Oroville Comment
  UC426975  Sambucus racemosa var. microbotrys E. B. Copeland 1930-7-12 480 Butte above Jonesville (n brow of high ridge) 2100 Comment
  CHSC28872  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte On w end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  UC174165  Sanicula bipinnata Mrs. R. M. Austin Apr. 1896 210 Butte Little Chico Creek Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  SEINET10454569  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4715 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC65442  Sanicula bipinnatifida var. flava L. P. Janeway 1995-6-19 4798 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC85626  Sanicula bipinnatifida var. flava Frances Kimball 1965-5-2 2667 Butte Cherokee Rd., 9.9 mi. E of California Rt. 70, between Oroville and Quincy; top of Table Mt.; gully, left bank. Comment
  JEPS108822  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  UC1006698  Sanicula crassicaulis C. Ritchie Bell 1952-4-19 3 X419 Butte 3.8 mi ne of Berry Creek (in (an old home site)) Comment
  CHSC96828  Sanicula graveolens Lowell Ahart 2007-5-29 13950 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC32624  Sanicula tuberosa M. S. Taylor 1981-3-31 3463 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC46328  Sanicula tuberosa Lowell Ahart 1989-5-29 6326 Butte On a lava cap, near the dirt road, east of Mooreville Ridge, about 2 air miles north of the Lost Creek Dam, south of the west branch of Pinkard Creek. 1188 Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. 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
  UC1713670  Saxifraga aprica E. B. Copeland 1930-7-12 Butte above Butte Creek House (Jonesville); Jonesville 1700 Comment
  CHSC47145  Schoenoplectus acutus var. occidentalis Henricus Jansen 1989-6-15 Butte Wild Goose. Sutter Butte Sink. Comment
  UC683297  Scirpus californicus Alan A. Beetle 1941-6-27 2739 Butte Rte 99E 4 mi n Richvale (along roadside); n of Richvale Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  CAS-BOT-BC110893  Scirpus microcarpus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC28682  Scribneria bolanderi M. S. Taylor 1979-5-6 1996 A Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  CHSC51277  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 6634 Butte Growing below the high water line of Lake Oroville, about 1mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 243 Comment
  CHSC42831  Scutellaria californica L. P. Janeway 1987-6-5 2126 Butte Along OroQuincy Hwy 0.5 mi S of Suspension Bridge over Lake Oroville. 320 Comment
  CHSC61213  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1993-3-24 5240 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
  CHSC87928  Secale cereale Lowell Ahart 2004-5-17 10936 Butte On the south side of the Midway, about 1/2 mile east of the railroad, about 1 1/2 miles northeast of Durham. 54 Comment
  CHSC30973  Sedella pumila Joann Lacey 1979-4-13 19 Butte Ca. 1.1 mi ne of jct of Humboldt rd. and Stilson Canyon Rd. Ca. 3.9 mi ne of Chico. 129 Comment
  POM142365  Sedella pumila E. B. Copeland 1903-5-2 3019 Butte Chico. Comment
  CAS-BOT-BC63852  Sedum spathulifolium Helen M. Edwards 1917-6-6 s.n. Butte De Salbla Comment
  CHSC101818  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 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
  CHSC109544  Sedum spathulifolium L. P. Janeway 2012-5-29 10830 Butte Northern High Sierra Nevada. Along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south-southwest of Ponderosa Reservoir dam. 482 Comment
  CHSC115440  Sedum spathulifolium M. Sutton; K. Schierenbeck 2013-5-5 Butte Deer Creek. 3200 Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC48043  Selaginella hansenii L. P. Janeway 1984-10-8 1179 Butte Along Hwy 70 above North Fork Feather River. 609 Comment
  SEINET10530439  Selaginella hansenii Mary Susan Taylor 1980-4-6 Taylor 2448 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  RSA302659  Senecio eurycephalus var. lewisrosei J. R. Shevock 1972-5-19 1777 Butte Hwy 70, Feather River Canyon. 21 Comment
  RSA32802  Senecio eurycephalus var. lewisrosei A. A. Heller 1938-5-28 s.n. Butte Feather River Hwy, 23 miles from Oroville Comment
  CAS-BOT-BC213676  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  CDA38817  Senecio sylvaticus L. Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CHSC87434  Senecio sylvaticus R. D. Fischer 2004-4-5 97 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near drainage at bottom of Pine Trail, near the junction of Guardian Trail. 396 Comment
  CHSC420  Senecio vulgaris P. Delaplane 1965-3-20 4 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC42456  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte On gravel bars 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
  CHSC90185  Senecio vulgaris Robert Kissane 1989-4-18 8 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  JEPS115314  Senecio vulgaris Lowell Ahart 2009-4-17 15539 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
  SEINET10473963  Senecio vulgaris Mary Susan Taylor 1975-3-25 Taylor 428 Butte Chico. Comment
  CHSC36296  Sericocarpus oregonensis M. S. Taylor 1982-8-16 4986 Butte Just N of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  UCD92594  Setaria parviflora L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CHSC51294  Setaria pumila Lowell Ahart 1990-10-21 6638 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  SEINET10609527  Setaria pumila Roland McKee 1918-8-12 McKee s.n. Butte Weed in alfalfa plots, Plant Industry Station, Chico. Comment
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  HSC43132  Sherardia arvensis Maralyn O'Meara 1974-4-20 286 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  CHSC105800  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, 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
  RSA32820  Sidalcea A. A. Heller 1942-5-27 16479 Butte Clear Creek Schoolhouse, Clark Road. Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. 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
  POM84399  Sidalcea calycosa subsp. calycosa C. C. Bruce 1897-03 1923 Butte Chico. Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  POM61856  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon (near Clear Creek) from type region Comment
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  RSA31659  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte Near covered bridge on Butte Creek east of Chico. Comment
  HSC38066  Sidalcea malviflora Thomas W. Nelson, Jane Nelson 1976-5-10 2474 Butte Beside Hwy. 191, 4 mi. W of Paradise Comment
  CDA13282  Sidalcea oregana subsp. oregana G. F. Hrusa, T. D. Wilfred 1996-7-9 13130 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UCD116832  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 s.n. Butte Jonesville. Comment
  CHSC84914  Sidalcea robusta Becky Munds 1990-4-16 10 Butte Upper Bidwell Park Chico. Vic. of Salmon Hole on e side in gully. 76 Comment
  UC1586524  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte about 2 mi ne Coyote Gap (about 2 mi nw of Four Trees, near where the two branches of Wildcat Creek come together); Wildcat Creek, nw of Four Trees, ne of Coyote Gap 1219 Comment
  CHSC215  Silene laciniata subsp. californica M. Underhill 1952-7-2 Butte Canyon. 304 Comment
  CHSC90050  Silene laciniata subsp. californica Peggy Fain 1991-4-21 19 Butte Ca. 3 km. E. of Richardson Springs Hotel, N. side of Walker Creek, Musty Buck Preserve. 243 Comment
  CAS-BOT-BC389285  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville 1550 Comment
  CAS-BOT-BC389287  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte About Chico Meadows 1219 Comment
  CHSC44513  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-BC389289  Silene lemmonii A. A. Heller 1924-4-27 13854 Butte Near the Enloe Sanitarium at Paradise Comment
  UC177562  Silene occidentalis subsp. longistipitata H. M. Hall Jul 1914 9773 Butte Jonesville 1524 Comment
  SEINET10537666  Silene occidentalis subsp. occidentalis Mary Susan Taylor 1982-8-16 Taylor 5000 Butte T24N R4E se/sw sec 1. Pulga NW quad. Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600 ft. 1707 Comment
  CHSC19525  Silybum marianum J. H. Sneed 1972-3-5 8 Butte Found along side Chico-Butte City Hwy. s of Chico. 3.5 mi on right side of road. 59 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
  UC143528  Sisyrinchium bellum Mrs. R. M. Austin July, 1896 34 Butte Colby Comment
  CHSC41256  Sisyrinchium idahoense S. C. Morey 1983-7-21 475 Butte Cherry Hill Meadow. On n side of humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS119911  Solanum americanum Lowell Ahart 2012-10-20 18514 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS124146  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  JEPS117269  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC4360  Sorghum halepense M. Hiller 1966-5-29 Butte In creek bed parallel to Manzanita Ave., Chico. Comment
  UCD92663  Sorghum halepense G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley. East Gridley Road at the W edge of the Feather River bridge. 27 Comment
  UCR219113  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15584 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET8233923  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC35004  Spergula arvensis subsp. arvensis R. A. Schlising; R. Banchero 1981-4-17 4039 Butte S part of county, NE of Honcut and SW of Bangor; 2.5 miles N of La Porte road along Dunstone Road. At roadside. Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  CHSC40005  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Found on bank of small wash, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC94891  Spergularia rubra Lowell Ahart 2006-9-28 13367 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS108927  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  CHSC42675  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  CHSC42793  Spiraea densiflora subsp. densiflora L. P. Janeway 1987-6-27 2331 Butte Along Little Kimshew Cr just N of Ramsey Bar. Site of old Ramsey Bar mining and timber center. 1341 Comment
  UC1128715  Spiraea douglasii P. L. Johannsen 1936-7-21 955 Butte 1 mi ene Chaparral House; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC49684  Spiranthes porrifolia Vernon Oswald 1987-7-29 3158 Butte South side of Humbug Rd. just e of Chaparral Guard Station, ca. 1.5 mi (air) wnw of Philbrook Reservoir. 1554 Comment
  JEPS108131  Sporobolus creber Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville 34 Comment
  CHSC88063  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  UC2055630  Stachys pycnantha O. H. Kappler 1949-7-28 Butte North Fork, Feather River, Route 24. Comment
  POM181718  Stachys rigida subsp. rivularis H. F. Copeland 1927-4-9 104 Butte Jonesville. Comment
  SEINET10969019  Stachys stricta Mary Susan Taylor 1977-11-12 Taylor 1534 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  UC179507  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi north of Oroville. Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  CHSC10641  Stellaria media Lowell Ahart 1968-3-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120002  Stellaria pallida Lowell Ahart 2012-4-30 17943 Butte 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
  CAS-BOT-BC405341  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  JEPS121971  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  UC725556  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  UCD115989  Streptanthus diversifolius Robert E. Preston 1986-4-29 539 Butte 8 km north of Oroville, on North Table Mountain. 396 Comment
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC87430  Streptanthus polygaloides John Thomas Howell 1962-6-16 37539 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  HSC96695  Streptanthus tortuosus var. suffrutescens L. Ahart 2006-6-9 12647 Butte W side of Bardees Bar Rd., S of small stream, 0.25 mi. SW of bridge across N Fork Feather River at Bardees Bar, 2.75 mi. SW of Pulga 404 Comment
  CHSC36089  Streptopus amplexifolius var. americanus R. A. Schlising; K. Tarp, D. Burk 1982-6-27 4306 Butte SE part of county S of Lost Creek Res. At crossing of Strawberry Valley Creek. 1097 Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  CAS-BOT-BC48063  Styrax redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the rige, above Road 21N25A. 1143 Comment
  RSA304177  Styrax redivivus James R. Shevock 1972-5-19 1783 Butte S of Storie. Feather River Cyn. 610 Comment
  CHSC653  Swertia albicaulis var. nitida R. Massey 1931-5-20 Butte Forest Ranch. 548 Comment
  CHSC38292  Symphoricarpos albus var. laevigatus Vernon Oswald 1983-6-2 609 Butte Upper Bidwell Park, Chico, along Yahi Trail E of Brown's hole. 207 Comment
  LA204590  Symphoricarpos mollis E. B. Copeland; 1930-7-7 479 Butte Jonesville 1600.0 Comment
  CHSC43136  Symphyotrichum ascendens Robert Banchero 1981-8-4 643 Butte Ca 1.7 mi N jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  JEPS119917  Symphyotrichum bracteolatum Lowell Ahart 2012-10-20 18492 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
  RSA0060807  Symphyotrichum chilense Lowell A. Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SD50980  Symphyotrichum chilense Darley F. Howe 1960-9-20 Butte North fork of Feathe