Search Results — 2000 specimen records retrieved (1618 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 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
  CHSC45327  Abutilon theophrasti Vernon Oswald 1987-9-7 3233 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  CAS-BOT-BC330613  Acer glabrum var. glabrum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  POM85639  Acer macrophyllum Edward Palmer 1892-6-7 2055 Butte Near Chico Comment
  CAS-BOT-BC334156  Acer negundo var. californicum Lewis S. Rose 1937-6-10 37378 Butte 7 miles W of Honcut along Feather River 22 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CHSC95214  Achillea millefolium R. D. Fischer 2004-5-2 801 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Guardian Trail between the Pine and Bloodypin Trails. 335 Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  UC1609076  Achnatherum occidentale subsp. californicum Lowell Ahart 1993-6-26 7019 Butte 1 mi w Lost Creek Reservoir (e side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC48512  Acmispon argophyllus var. fremontii Vernon Oswald 1985-5-28 1785 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 Comment
  CAS-BOT-BC204849  Acmispon argophyllus var. fremontii Lowell Ahart 1984-6-8 4667 Butte Just north of the spillway at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC2923  Acmispon brachycarpus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  CHSC33115  Acmispon brachycarpus M. S. Taylor 1981-5-14 3734 Butte N side of Feather River Hwy 70 at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC33899  Acmispon brachycarpus M. S. Taylor 1981-4-21 3550 Butte S side of Concow Rd, on Ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC50549  Acmispon nevadensis var. nevadensis Vernon Oswald; Lowell Ahart 1990-7-5 4349 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  JEPS122005  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC101832  Acmispon parviflorus Lowell Ahart 2009-5-23 15758 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road. 381 Comment
  CHSC39539  Acmispon strigosus Lowell Ahart 1983-5-28 4021 Butte Above the trail about 1/4 mile from the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC4197  Acmispon wrangelianus J. Senter 1967-4-4 20 Butte Abundant 1 mi. E. of Hwy . 99E and Skyway interchange along roadway. 45 Comment
  CAS-BOT-BC412593  Aconogonon alaskanum E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC3274  Adiantum aleuticum M. L. Hillier 1966-3-7 Butte On s. side of rd. between Honeyrun covered bridge and Paradise on Honeyrun rd. Comment
  CHSC3425  Adiantum aleuticum Judy Potter 1966-3-7 113 Butte Honey Run Road, 2.5 miles south The Skyway. Comment
  CHSC30820  Adiantum capillus-veneris M. S. Taylor; J. D. Jokerst 1980-4-18 2540 Butte S side of Humbug Rd, ca. 1 mi ne of Centerville. 365 Comment
  SEINET10839582  Adiantum capillus-veneris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4236 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC101750  Adiantum jordanii Lowell Ahart 2009-5-23 15742 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC38243  Adiantum jordanii Vernon Oswald 1983-3-31 246 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 97 Comment
  UCD80687  Adiantum jordanii CNPS SN Foothill Team 2005-4-6 SNFN 0097 b Butte CDFG North Table Mountain Wildlife Area, on the north-facing slope of the south fork of Coal Canyon, approximately half-way down slope from the Table Top before creek. 377 Comment
  SEINET11715826  Adiantum jordanii D. J. Straub 1977-1 5 Butte ca 50 ft S of Big Chico Creek and 5050 ft E of Hooker Oak pool, 1 mi E of Chico 91 Comment
  CHSC112100  Aegilops triuncialis Lowell Ahart 2012-5-20 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 323 Comment
  CHSC47596  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 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
  CAS-BOT-BC202592  Aesculus californica Grace Kermode 1899-5-30 s.n. Butte Centerville 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
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Jan 19 2011
  CAS-BOT-BC13347  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of spur road near Plantation, ridge south of Galen Ridge, ca 3 mi SW of Brush Creek 914 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  UCD51764  Agrostis avenacea William Anderson 1965-6-13 s.n. Butte Table Mountain. 365 Comment
  CHSC87216  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 35 Comment
  CAS-BOT-BC127334  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Along bands of North Honcut Creek. Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC127371  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 50 Comment
  CHSC111735  Agrostis exarata Lowell Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell park, Chico. 62 Comment
  CHSC70857  Agrostis microphylla Lowell Ahart 1998-4-29 7952 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  CAS-BOT-BC138640  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC28544  Agrostis stolonifera M. S. Taylor 1978-7-18 1676 Butte On w side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC31731  Agrostis stolonifera L. Ahart 1977-7-19 1480 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC49502  Agrostis stolonifera Vernon Oswald 1987-7-20 3140 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC94427  Agrostis stolonifera Lowell Ahart 2006-8-15 13185 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC46624  Agrostis variabilis Vernon H. Oswald 1989-7-27 3897 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  RSA701233  Agrostis variabilis L. Ahart 2004-8-9 11358 Butte on the very upper reaches of Jackson Creek, on the northeast side of English Mountain, about 2 3/4 miles east of the east end of Bowman Lake. 2264 Comment
  CHSC98974  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC115424  Albizia julibrissin Kate Ronan 2013-5-18 Butte City of Chico, corner of W. 1st Ave. and Citrus. 58 Comment
  JEPS119851  Alisma triviale Lowell Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  SD6421  Allium acuminatum Mrs. R. M. Austin 1883-1 Butte No further location information on label. 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
  CHSC31524  Allium amplectens L. Ahart 1975-5-12 763 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  RSA768995  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte West side of Guardians Trail, north of the small drainage, about 50 yards north of Pine Trial, about 1/4 air mile west of Highway 32, about 9 air miles northeast of Chico. 430 Comment
  CAS-BOT-BC460743  Allium amplectens Robert A. Schlising; Marc Hayes 1978-5-22 3266 Butte N of Chico along Cohasset Hwy, 4.3 mi N of Mud Creek. Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  UCD141836  Allium cratericola L. K. Mann 1959-4-12 s.n. Butte Table Mountain, East of Chico near Cherokee. Comment
  JEPS113290  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 over-looking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. Comment
  CHSC36950  Allium peninsulare M. S. Taylor 1982-5-2 4391 Butte On n side of Hwy 70 at Pulga bridge, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC9137  Allium peninsulare Terril Wolt 1970-4-23 30 Butte In upper Bidwell Park, at end of road, up N. side of canyon, Chico. 60 Comment
  CAS-BOT-BC132072  Allium peninsulare var. peninsulare Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC84890  Allium sanbornii var. sanbornii R. D. Fischer; Jenny Marr 2003-8-3 1 Butte Sierra Nevada foothills, Big Chico Creek Ecological Reserve. On the east side flood plain of Big Chico Creek at southern end of reserve, approx. 300 ft north of Bidwell Park boundary. 243 Comment
  CAS-BOT-BC274  Allocarya glyptocarpa Amos Arthur Heller 1914-3-16 11202 Butte Hills 8 miles N of Oroville Comment
  RSA337384  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CHSC65329  Alnus incana subsp. tenuifolia Lowell Ahart 1995-10-3 7676 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC99661  Alnus incana subsp. tenuifolia H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  CAS-BOT-BC170913  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte At Kunkle Res., about 2 miles S of Paradise 550 Comment
  JEPS119570  Alnus rhombifolia Lowell Ahart 2012-2-22 17741 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10478439  Alnus rhombifolia Mary Susan Taylor 1979-10-12 Taylor 2242 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC47601  Alopecurus carolinianus Lowell Ahart 1974-4-28 442 Butte Peter Ahart Ranch, about 2 miles north and 1/2 east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC30543  Alopecurus saccatus J. D. Jokerst 1980-3-20 484 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC108131  Amaranthus albus Lowell Ahart 2011-10-29 17720 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
  CHSC113151  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, about 30 yards west 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
  JEPS113490  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CDA3300  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC37081  Amaranthus retroflexus L. Ahart; M. S. Taylor 1982-10-11 3850 Butte On dry disturbed soil of a fire guard, n of check-in station, Graylodge Wildlife Refuge, 12 mi. sw of Gridley. 35 Comment
  CHSC66656  Amaranthus retroflexus Vernon Oswald 1996-7-17 8066 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Along the farm road at Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  CHSC47965  Amaranthus rudis Vernon Oswald 1987-8-13 3218 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Portion of Rancho Bosquejo. 48 Comment
  CAS-BOT-BC55584  Ambrosia psilostachya Lowell Ahart 1982-10-11 3859 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC100492  Ambrosia psilostachya Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC26622  Ambrosia psilostachya M. P. Hayes 1977-9-24 120 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). 30 Comment
  JEPS124126  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte About 100 yards south of Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CAS-BOT-BC142951  Amelanchier utahensis A. A. Heller 1915-6-11 11963 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC66358  Ammannia coccinea Vernon H. Oswald 1996-6-20 7829 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  SBBG117249  Ammannia coccinea B. Crampton 1957-9-17 4631 Butte 5 mi NW of Biggs, Biggs Rice Experiment Station Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  RSA0045595  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  CHSC90577  Amsinckia intermedia Andy Winkler 1980-4-15 3 Butte About 1/2 mi east of the Hwy 99 Butte Creek bridge, on the north side of Butte Creek. Comment
  JEPS119741  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, 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
  UC1191045  Amsinckia intermedia Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 682 Butte near bridge on West Branch of Feather River (on Nelson Bar Road) Comment
  UC726541  Amsinckia intermedia A. A. Heller 1942-4-10 16420 Butte Oroville Road just e of Butte Creek Bridge Comment
  CHSC38634  Anagallis arvensis Vernon Oswald 1983-4-6 289 Butte Upper Bidwell Park, chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between parking Areas R and S). 256 Comment
  CHSC82403  Anagallis arvensis Lowell Ahart 2002-5-7 9632 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS99034  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC40467  Antennaria argentea Lowell Ahart 1985-6-17 5048 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC38683  Antirrhinum cornutum Vernon Oswald 1983-6-3 632 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  UCD123429  Antirrhinum cornutum L. E. Hazeltine 1916-6-23 s.n. Butte U.S. Plant Garden, Chico. Comment
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  CHSC44794  Antirrhinum vexillo-calyculatum subsp. intermedium R. Banchero 1980-7-7 295 Butte Along county Line Rd 0.2 mi E of its jct with Golden Trout crossing, 1.1 mi E of Camp 18. 1280 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  JEPS129818 Image available Aphyllon epigalium Karen D. Cox 1974-6-1 188 Butte Paradise, found in yard at 1332 Elliott Road. Comment
  CHSC34076  Aphyllon epigalium subsp. epigalium M. S. Taylor 1981-5-29 3814 Butte Chico Ridge, ca. 0.5 mi n of 22N31, ca. 3 air mi se of Pulga. 853 Comment
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC88091  Apocynum cannabinum R. D. Fischer 2004-4-17 176 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. At creek edge. 213 Comment
  SEINET10454899  Apocynum pumilum var. rhomboideum Mary Susan Taylor 1978-9-9 Taylor 1921 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC52190  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 234 Butte Ca. 1.4 mi SE of Pulga. 804 Comment
  POM219015  Arabis oligantha E. B. Copeland 1931-6-19 643 Butte [No further location information.] 1550 Comment
  SEINET10448430  Arabis sparsiflora var. subvillosa Mary Susan Taylor 1981-3-24 Taylor 3437 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
  CHSC39785  Arbutus menziesii Eloise Gallatin 1935-5-19 Butte Lake Madrone. Comment
  CHSC48374  Arbutus menziesii Vernon Oswald 1987-3-29 2299 Butte Centerville Flume near the first tunnel N of Humbug Rd. 341 Comment
  CHSC87784  Arbutus menziesii Paul Maslin 2004-3-1 3 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610130E 4408290N. 365 Comment
  CHSC93516  Arbutus menziesii L. P. Janeway; B. Castro, Ana Castro Instone 2006-4-23 8559 Butte Northern Sierra Nevada Foothills. North Table Mountain; near head of Campbell Creek and Beatson Hollow, about 150 m south of Phantom Falls. On steep west-facing slope between the top tablelands and the bottom of the Hollow. 375 Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  CHSC46568  Arceuthobium americanum Vernon H. Oswald 1989-7-4 3839 Butte Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC44407  Arceuthobium campylopodum Lowell Ahart 1988-6-29 6106 Butte At the intersection of Bean Creek Ranch Road and the road to the Andy Smith Ranch, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  CAS-BOT-BC38871  Arctostaphylos manzanita subsp. manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51541 Butte In foothill woodland south of Chrokee on road to Oregon City. Comment
  JEPS119834  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG128407  Arctostaphylos manzanita subsp. manzanita L. Ahart, J. Dittes, S. Green 2009-1-17 15468 Butte N side of Humboldt Trail, ca. 50 yards S of Guardian Rock Trail, upper Bidwell Park, ca. 300 yards W of Hwy 32 330 Comment
  CAS-BOT-BC38637  Arctostaphylos manzanita subsp. roofii John Thomas Howell 1976-4-2 51566 Butte About 2 miles from Paradise on skyway to Chico 396 Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla 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-BC38611  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15491 Butte Neal Road at Paradise in the game refuge, above Bowle's Mansion. Comment
  CAS-BOT-BC38612  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42636 Butte Magalia 701 Comment
  UC726236  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte on the Neal Road w Optimo Lodge (between Paradise and Magalia) Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  SEINET10449337  Arctostaphylos viscida Lowell Ahart 1985-2-17 Ahart 4841 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC48253  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico. Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  RSA636987  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27480 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UC1748290  Arenaria kingii var. glabrescens L. P. Janeway and B. Castro 1999-8-1 6512 Butte 0.3 mi N of: 0.5 mi SW of Summit Lake top of Snow Mountain 2017 Comment
  JEPS110513  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  POM206950  Aristida oligantha E. B. Copeland 1903-7-27 3488 Butte Chico. Butte Creek. Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 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
  JEPS119513  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte About 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  SD7868  Aristolochia californica R. M. Austin 1883-1 Butte Comment
  CHSC46233  Arnica dealbata Pauleen Broyles 1987-7-5 1071 A Butte Ca 7 km n of Inskip and .4 km s of Bull Hill Road where it crosses Coon Creek. On n side of Coon Creek. 1530 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CHSC34052  Arrhenatherum elatius L. Ahart; M. S. Taylor 1981-8-15 3050 Butte Ca. 200 m w of the store at the e end of Philbrook Reservoir, ca. 10 mi ne of Inskip. 1500 Comment
  JEPS115156  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  CHSC42753  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC94100  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC400636  Asarum hartwegii A. A. Heller 1919-5-18 13174 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC51848  Asclepias cordifolia L. P. Janeway 1988-6-16 2794 Butte Slope above W Br. Butte Cr, 0.6 mi S of Lomo along rd through Cedar Cr. 1219 Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  CHSC102716  Asclepias fascicularis Lowell Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CAS-BOT-BC68882  Aspidotis californica Leslie Steidl 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  SEINET10529844  Aspidotis californica Mary Susan Taylor 1976-3-6 Taylor 1008 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the 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
  CHSC27993  Aspidotis densa M. S. Taylor 1978-7-18 1686 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC75437  Aspidotis densa G. F. Hrusa; T. D. Wilfred 1997-5-8 13748 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  SEINET10474435  Aster oregonensis subsp. californicus Mary Susan Taylor 1979-9-28 Taylor 2196 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC178463  Astragalus gambelianus Lowell Ahart 1985-5-10 4940 Butte Along the edge of the Cherokee Road, north of where the public parks, about 5 miels north of Oroville. 450 Comment
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  CAS-BOT-BC192800  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along the Pacific Highway 9 miles north of Chico Comment
  CHSC43882  Astragalus pauperculus L. P. Janeway 1988-5-8 2661 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Drive, 2 mi north of Ten Mile House. 594 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
  UCD136292  Athyrium filix-femina var. californicum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC66022  Athyrium filix-femina var. cyclosorum H. F. Copeland 1920-8-2 199 Butte by Butte Creek 1676 Comment
  CHSC33569  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3728 Butte E side of 23N94, up Wildcat Creek (and nearby creeks) ca. 1 mi ne of Four Trees Rd, ca. 1 mi w of Four Trees on Oroville-Quincy Hwy. 1371 Comment
  CHSC33949  Athyrium filix-femina var. cyclosorum M. S. Taylor; L. Ahart 1981-8-15 4194 A Butte N side of Coon Hollow Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  CHSC51051  Athysanus pusillus Pauleen Broyles 1987-3-24 997 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. Bank along Pine Creek just S of its confluence of Singer Creek. Comment
  CHSC37114  Atriplex cordulata L. Ahart; M. S. Taylor 1982-10-11 3861 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC43257  Atriplex lentiformis Lowell Ahart 1987-10-22 5925 Butte About 150 yards west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles southwest of Oroville. 38 Comment
  SEINET10904484  Atriplex lentiformis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5155 A Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET516429  Atriplex prostrata Lowell Ahart 1981-1 3221 Butte Small part from a large plant, growing on damp soil on the sides of a deep ditch, on the N side of the rd. and near the entrance to the Gray Lodge Waterfowl Management Area Headquarters, W of Pennington Rd., about 12 mi. SW of Gridley. 30 Comment
  CAS-BOT-BC146177  Avena barbata Lowell Ahart 1987-5-6 5548 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  JEPS117709  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 246 Comment
  UCR74664  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada Mtns., Peter Ahart Ranch, c. 2 mi N and 0.5 mi east of Honcut 50 Comment
  CHSC108318  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, 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
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  CHSC48313  Barbarea orthoceras Vernon Oswald 1987-4-6 2306 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. Flood plain of the creek. 80 Comment
  CHSC46284  Barbarea verna Vernon Oswald 1989-5-25 3784 Butte Railroad between Pulga and Mayaro. Along the edge of the railroad right of way. 432 Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  CHSC77820  Bellardia trixago Lowell Ahart 2000-4-22 8329 Butte On the south side of Highway 162, about 1/4 mile west of Highway 99, about 10 miles sothwest of Oroville. 32 Comment
  CHSC3610  Bellis perennis R. Jaegel 1966-2-15 9 Butte Collected on the front lawn of Chico State College Library; Chico. Comment
  CHSC38120  Bellis perennis R. L. Ondricek-Fallscheer 1983-5-10 174 Butte Cultivated lawn area of Butte Hall, California State Univ., Chico campus. 59 Comment
  CDA36621  Bergia texana L. Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC102077  Bidens frondosa Lowell Ahart 1974-9-30 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC40911  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC102072  Bidens frondosa Forman T. McLean 1921-9-29 23 Butte Chico Comment
  RSA0036989  Bidens tripartita Lowell A. Ahart 2013-6-18 18802 Butte Drained bottom of a duck field, about 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  UCD98816  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  POM225863  Boisduvalia macrantha J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  SEINET10874029  Boisduvalia stricta Mary Susan Taylor 1980-5-31 Taylor 2755 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
  SEINET174979 Image available Botrychium simplex E. B. Copeland 1931-6-9 601 Butte Jonesville. 1500 Comment
  CAS-BOT-BC417632  Boykinia major Lowell Ahart 1985-7-9 5114 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CDA13271  Boykinia major G. F. Hrusa, T. D. Wilfred 1996-7-9 13119 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  CAS-BOT-BC145680  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1/8 mile west of Oroville Quincy Highway, 1.25 mile south of the Berry Creek School. Northeast of Oroville, section 5. 400 Comment
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  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
  CHSC38038  Brassica rapa R. E. Preston 1982-12-4 368 Butte In a field; n side of River Rd at bend at Bremner Ranch, ca. 7 mi sw of Chico. 33 Comment
  CAS-BOT-BC106323  Brickellia californica John Thomas Howell 1961-9-22 36744 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC26642  Brickellia californica M. S. Taylor 1977-11-12 1542 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC45204  Briza maxima Lowell Ahart 1975-5-12 772 Butte Along the edge of 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
  UC1594553  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  SEINET10570649  Brodiaea A. Arthur Heller 1938-4-11 Heller 15023 A Butte Hill back of the rifle range east of Chico in the oak belt of the Upper Sonoran Life Zone, 300 feet. Comment
  JEPS5692  Brodiaea californica var. californica W. L. Jepson 1934-5-4 16615 Butte 2 1/2 mi ne Cana Comment
  UC1080382  Brodiaea californica var. californica E. K. Balls 1957-5-23 22531 Butte 1.7 mi nw U. S. Hwy. 99 E. jct. with road from Penta 91 Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  CHSC40079  Brodiaea elegans A. A. Heller 1938-5-22 15105 Butte Near Chico airport. Upper Sonoran Life Zone. Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  CAS-BOT-BC482929  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC22948  Brodiaea minor Robert A. Schlising; Et al. 1964-6-11 2721 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CHSC78345  Brodiaea minor Lowell Ahart 2000-6-17 8480 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  JEPS93812  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte on w side of Hurleton Swedes Flat Road about 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  UC600594  Bromus carinatus var. carinatus H. F. Copeland 1931-6-11 Butte above Kirby Meadows (Jonesville); Jonesville 1981 Comment
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  CHSC71210  Bromus commutatus Lowell Ahart 1998-6-30 8015 Butte Southeast margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10868335  Bromus commutatus Lowell Ahart 1988-5-30 Ahart 6031 Butte Hairy Chess, On damp disturbed soil, near a seep, about 1/12 mile N of the brige across the North Fork of the Feather River, along Poe Power House Road, about 2 miles SE of Jarbo Gap. 338 Comment
  CAS-BOT-BC156026  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC156069  Bromus diandrus Lowell Ahart 1977-6-16 1473 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CHSC4369  Bromus diandrus M. Hillier 1966-5-30 Butte By creek at s end of Park Ave., Chico. Comment
  CAS-BOT-BC162458  Bromus laevipes Lowell Ahart 1977-6-2 1471 Butte Peter Ahart Ranch, Honcut. Along Honcut Creek. 50 Comment
  UCD58928  Bromus laevipes Beecher Crampton 1965-6-17 7383 Butte Butte-Yuba Co. Border: Just west of Rackerby Store. La Porte Road. 420 Comment
  CAS-BOT-BC162363  Bromus madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  UCD59015  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  CHSC75328  Bromus madritensis subsp. madritensis Lowell Ahart 1999-5-24 8078 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  UC600592  Bromus orcuttianus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  UC816304  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  UCR237303  Bromus rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  CAS-BOT-BC185309  Calamagrostis koelerioides John Thomas Howell 1951-8-19 28154 Butte Sierra Nevada. 2 miles west of Pulga. 365 Comment
  CAS-BOT-BC438356  Calandrinia ciliata John Thomas Howell 1978-4-17 52844 Butte Table Mountain 381 Comment
  CHSC3958  Calandrinia ciliata Ann Dolder 1967-4-8 Butte Ca. 100 yds e of road on Table Mt., 6 1/2 miles from Oroville. 335 Comment
  JEPS127081  Calandrinia ciliata Lowell Ahart 2016-4-15 20753 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC25150  Calandrinia ciliata var. menziesii Willis Ball 1970-2-24 71 Butte Growing along road in Upper Bidwell Park Ca. 2 miles N. E. of Bidwell Golf Course building. 121 Comment
  CHSC26809  Callitriche heterophylla var. bolanderi M. S. Taylor 1978-5-7 1607 Butte In irrigation ditch in Richvale vernal pools area, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC65194  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC48003  Callitriche marginata Vernon Oswald 1987-4-7 2313 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch, e of Hwy 99. In ruts of a dirt track. 68 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC45837  Calocedrus decurrens Lowell Ahart 1973-1-14 147 Butte Along the edge of the dirt road to Forbestown Reservoir, about 3 miles northeast of Forbestown. 762 Comment
  CHSC36540  Calochortus leichtlinii L. Ahart 1982-6-4 3551 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. Comment
  CHSC47585  Calochortus luteus Lowell Ahart 1977-5-2 1342 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC491851  Calochortus luteus H. E. Brown; A. A. Heller 1902-5-8 5494 Butte Berry Canyon, Near Clear Creek Comment
  HSC38106  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2449 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC492563  Calochortus minimus H. F. Copeland 1920-7-11 69 Butte Scitch John meadows 1828 Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC31356  Calochortus monophyllus Howard Paul 1980-3-30 2 Butte Ca. 0.25 mi nw of Humbug road on a large grassy ridge top, 2.5 mi ne of the Centerville cemetery, ca. 20 mi e of Chico. 457 Comment
  CHSC3835  Calochortus monophyllus L. E. Dunkel 1965-4-20 27 Butte Ca. 50 yards e of Monk's Store on Cohasset Road. 670 Comment
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  CAS-BOT-BC492595  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 s.n. Butte Near Paradise in the lower Sierra Nevada, in the Lower Transition Zone 600 Comment
  POM109674  Calochortus monophyllus Mrs. R. M. Austin 1883-05 14 Butte Little Chico Creek Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  SEINET3884980  Calochortus monophyllus Kathy Corson 1967-4-6 3 Butte 10 miles east of Chico on Highway 32.; 0 Comment
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  CAS-BOT-BC493342  Calochortus superbus Marion Ownbey; Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road Comment
  CHSC44977  Calochortus tolmiei Pamela A. Mallen 1987-4-15 11 Butte On Bardees Bar Rd., ca. 4 mi ne of Big Bend Rd. and 0.5 mi w of Hwy 70, 18 mi n of Oroville. 499 Comment
  CHSC84629  Calochortus tolmiei A. Rutherford 2002-4-27 23 Butte South Libby Road, Paradise, across the street from Fire Station 2 in a triangular dirt field. 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
  POM196062  Caltha howellii H. F. Copeland 1929-6-11 1239 Butte Jonesville. 1524 Comment
  CHSC26702  Calycadenia ciliosa M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1454 Butte Ca. 5 ft S of Hwy 32, ca. 8 mi E of Hwy 99 and Chico. 304 Comment
  CHSC51252  Calycadenia ciliosa Lowell Ahart; Mary Sue Taylor 1990-8-28 6595 Butte On the south side of Highway 32, about 3 miles east of Chico. 182 Comment
  UC1563273  Calycadenia fremontii Lowell Ahart and Mary Sue Taylor 1990-8-28 6585 Butte 3 mi e, s side of Hwy 32 Chico 182 Comment
  CAS-BOT-BC270049  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CHSC75348  Calycadenia oppositifolia Lowell Ahart 1999-6-12 8091 Butte West of the split in the dams and on both sides of the poor dirt road, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  JEPS33811  Calycadenia oppositifolia C. C. Parry 1882-1-1 Butte Chico Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  CHSC26763  Calycadenia spicata M. S. Taylor; M. Hayes 1977-8-16 1436 Butte On S side of Pentz Rd near culvert in natural drainage, ca. 1.2 mi E of jct of Pentz Rd and Hwy 99, ca. 15 mi S of Chico. 60 Comment
  CHSC101745  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  UCD170555  Calycanthus occidentalis D. O. Burge 2017-8-16 2283 Butte Butte Creek. 220 Comment
  UC1136670  Calyptridium monospermum P. L. Johannsen 1936-7-21 954 Butte 1/2 mi e of Chaparral House (Lassen National Forest); Lassen National Forest 1584 Comment
  UCD100350  Calyptridium monospermum Alva Day 1939-5-31 s.n. Butte Mooretown. Comment
  CHSC45387  Calyptridium umbellatum Vernon Oswald 1984-7-2 1336 Butte Humbug Summit. Growing on forest floor along the road. 2320 Comment
  HSC103802  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road, 3.1 km. NNE of Schott Road. 860 Comment
  CAS-BOT-BC221233  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET10496588  Calystegia occidentalis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4071 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  SEINET10837231  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA754848  Calystegia occidentalis subsp. occidentalis L. Ahart 2009-5-30 15775 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC34976  Calystegia occidentalis subsp. occidentalis R. A. Schlising; L. A. Bellue 1973-6-13 3096 Butte E of Oroville and Forbestown, 0.6 mi SE of jct Forbestown Road and Challenge Cutoff, along the latter. Comment
  SEINET10472622  Camassia leichtlinii Mary Susan Taylor 1978-6-24 Taylor 1657 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  RSA4633  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  POM59345  Campanula prenanthoides Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SD5018  Campanula prenanthoides E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 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
  CHSC11055  Capsella bursa-pastoris Lowell Ahart 1970-2-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC96910  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 air mi. SW of Chico 26 Comment
  UC600711  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville 1524 Comment
  CHSC50317  Cardamine breweri var. breweri Vernon Oswald; Lowell Ahart 1990-5-29 4263 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC33183  Cardamine oligosperma R. E. Preston 1981-4-8 51 Butte In a field on n side of Sacramento Ave. ca. 8 km w of Chico. 40 Comment
  CHSC47382  Cardamine oligosperma Lowell Ahart 1973-3-14 175 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC102187  Cardamine pachystigma George W. Hartwell 2009-3-14 Butte Rim Road, approx. 1.5 miles NW of SR 70 in an area burned by the Butte Lightening Complex wildfire, summer 2008. 885 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  CHSC34522  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-2-28 45 Butte Ca. 50 m e of Coutelenc Rd, ca. 320 m n of its jct with the Skyway, Magalia. 700 Comment
  CAS-BOT-BC282963  Carduus pycnocephalus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut, banks of N Honcut Creek 50 Comment
  JEPS120144  Carex Lowell Ahart 2012-6-14 18190 Butte On the south side of path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  SBBG128736  Carex L. Ahart 2012-6-14 18190 Butte lawn, on S side of path, SW of CARD Community Center, Lower Bidwell Park, 62 Comment
  SEINET10836545  Carex Mary Susan Taylor 1978-6-24 Taylor 1653 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 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
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  RSA769592  Carex angustata L. Ahart 2010-9-28 17261 Butte West edge of 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  POM218976  Carex athrostachya E. B. Copeland 1928-7-28 s.n. Butte Jonesville. 1700 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  SEINET4285994  Carex athrostachya Unknown 2010-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC19108  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Southeas of Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  CHSC81925  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CHSC102594  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
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  UC1755303  Carex brainerdii Dean W. Taylor 2004-7-21 19198 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  CHSC61509  Carex cyrtostachya Lowell Ahart 1993-7-6 7052 Butte On the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  JEPS102953  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  JEPS103106  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7618 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
  JEPS110318  Carex fracta Lowell Ahart 2006-7-25 13068 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
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 Comment
  SEINET4292194 Image available Carex gracilior Unknown 2003-1 7829 Butte Northern High Sierra Nevada.North side of South Fork Feather River arm of Lake Oroville, 230 m north of the north end of Enterprise Bridge. Dirt roadside at intersection of Springeroad (Road X) and Feather Falls Road(Lumpkin Ridge Rd). Comment
  SEINET7560147 Image available Carex gracilior Unknown 2003-5-8 7782 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  UCD140426  Carex heteroneura L. P. Janeway; R. A. Schlising 1988-7-16 3015 Butte above Willow Creek, 1 mile west of Humbug Road. 1798 Comment
  SEINET11173357  Carex heteroneura var. heteroneura Unknown 1999-7-17 6508 Butte Butte County Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CHSC34168  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  HSC86882  Carex lemmonii L. P. Janeway 1987-6-26 2289 Butte Rag Dump 1174 Comment
  POM213964  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville. 1524 Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CAS-BOT-BC119745  Carex nebrascensis A. A. Heller 1928-6-16 14615 Butte Butte Meadows. Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  CHSC52260  Carex nebrascensis L. P. Janeway; Patty Costello 1987-9-5 2578 Butte NW side of Big Chico Cr below the road to Soda Springs campground near Hwy 32. 1127 Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC45059  Carex nervina Vernon Oswald 1988-6-20 3409 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC52250  Carex nudata L. P. Janeway 1988-4-10 2619 Butte Along Clear Creek just north of Durham-Pentz Rd. 80 Comment
  SEINET7569421 Image available Carex nudata L. P. Janeway 2003-5-11 7783 Butte Stirling City 7.5' quad. 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
  CHSC43964  Carex pellita Vernon Oswald 1988-5-27 3344 Butte Rancho Aguas Frias. Nelson-West Rd. 2.1 mi w of Aguas Frias Rd. (Goodspeed-Watt Rd.). 30 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  CHSC48542  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3009 Butte Along Colby Mountain Rd, 1/4 mi N of Jonesville. 1554 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC84709  Carex subfusca L. P. Janeway 2003-6-8 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  UC830196  Carex subfusca A. A. Heller 1915-6-25 12018 Butte Chico Meadows Sierra Nevada 1219 Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  SEINET10880020  Carex tompkinsii Mary Susan Taylor 1980-5-8 Taylor 2599 Butte T24N, R3E E half NW sec. 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi. E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC43870  Carex vulpinoidea Vernon Oswald 1987-6-5 2954 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC43954  Carex vulpinoidea Vernon Oswald 1988-5-19 3321 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CHSC111130  Carpenteria californica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
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Feb 9 2019
  CHSC109183  Castanea dentata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road,west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UCR190826  Castilleja 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
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  JEPS124226  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  CDA13307  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13153 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS N60. Comment
  CHSC93980  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 771 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. Boy Scout Camp. 1371 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  CHSC4917  Castilleja exserta R. L. Adams 1964-3-24 56 Butte Open field NE of Chico. Manzanita Ave. E. of Manzanita School, Chico. Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  CHSC113234  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC33145  Castilleja lacera James D. Jokerst 1981-5-11 1310 Butte Top of Doe Mill Ridge. 457 Comment
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  CHSC4255  Castilleja lacera J. E. Bowlin 1967-4-14 32 Butte 3.4 mi. E of corner of Keefer Rd. and Cohasset, Chico. Comment
  RSA0108969  Castilleja lacera Lowell A. Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1.5 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  CHSC49015  Castilleja lineariloba Vernon Oswald 1985-4-1 1691 Butte Oroville-Quincy Rd. 0.9 mi n of Bidwell Bar Bridge. Comment
  CHSC43514  Castilleja subinclusa Lowell Ahart 1976-4-15 1077 Butte Along the edge of Swedes Flat Road, near the bridge across Rocky Honcut Creek, north-east of Bangor. 457 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  UC600643  Castilleja tenuis H. F. Copeland 1920-7-12 473 Butte Jonesville Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 Butte Gray Lodge Wildlife management Area W of Gridley, S side of Rutherford Rd. at Parking Lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  SEINET10493629  Ceanothus cuneatus Mary Susan Taylor 1981-3-16 Taylor 3410 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
  JEPS115256  Ceanothus cuneatus var. cuneatus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15486 Butte On a ridge about 300 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 354 Comment
  RSA755786  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-3-27 DOB 815 c Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1 road mile from Centerville Road on Bean Flat Road, 15.1 kilometers 74 degrees true ENE of Chico. 243 Comment
  CAS-BOT-BC50781  Ceanothus integerrimus A. A. Heller 1928-4-30 14536 Butte Along the Neal Road about 3 miles below Paradise Comment
  CAS-BOT-BC50782  Ceanothus integerrimus Ira L. Wiggins 1925-3-25 1451 Butte Two and one half miles above Pence on Pence-Magalia Road Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  LA43611  Ceanothus integerrimus Carl B. Wolf; 1937-5-18 8726 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CHSC27788  Ceanothus integerrimus var. californicus Michael Snider 1978-4-16 5 Butte 25 ft s of Hwy 32, 9 mi e of jct. of Hwys 99 and 32. 9 mi e of Chico. 365 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  RSA19310  Ceanothus lemmonii L. S. Rose 1937-6-10 37377 Butte Forbestown. 838 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  UC726726  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  SEINET10493652  Ceanothus prostratus Mary Susan Taylor 1981-4-16 Taylor 3542 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  UC177577  Ceanothus velutinus var. velutinus H. M. Hall July 1914 9804 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  UC2026879  Celtis australis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC281945  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte 8 miles N of Oroville Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  JEPS115270  Centaurea solstitialis Lowell Ahart 2009-5-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC74674  Centaurium tenuiflorum B. Castro 1998-6-13 790 B Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  SFV10906  Centaurium venustum M. L. Vincent 1967-6-25 668 Butte Cherokee Road to Oroville. Table Mountain. Comment
  CHSC87226  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 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
  CHSC94262  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC103751  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 387 Comment
  CHSC10575  Cerastium glomeratum Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC93490  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 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
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  CHSC23406  Chamaebatia foliolosa M. S. Taylor 1976-3-6 1010 Butte Above Macabes Creek, ca. 1/4 mi e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC29392  Chamaesaracha nana R. A. Schlising; R. Banchero 1980-6-12 3682 Butte 8.6 mi S of Butte/Tehama county line on Hwy 32, (= 0.1 mi S of Fire Tower). On roadcut. Comment
  CHSC11107  Chamaesyce glyptosperma Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC79023  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte On the west side of Highway 70, about 50 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  CHSC94723  Chamaesyce maculata Lowell Ahart 2006-9-28 13385 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
  CHSC23374  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park aarea above golf course and rifle range. Comment
  UC1303129  Chamaesyce ocellata subsp. ocellata A. A. Heller 1927-9-5 14469 Butte ca 3 mi e Chico Comment
  CHSC33632  Chamaesyce serpillifolia subsp. serpillifolia R. E. Preston; R. A. Schlising 1981-7-21 30 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  CHSC51262  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  JEPS120607  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC69448  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  SEINET10867074  Cheilanthes intertexta Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5212 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  RSA755750  Chenopodium L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  JEPS114998  Chenopodium pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS128761  Chenopodium strictum Lowell Ahart 2016-10-25 21373 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 13 miles south Oroville. Comment
  CHSC31544  Chenopodium vulvaria L. Ahart 1977-7-1 1442 Butte On bottom and sides of small swale near our home. Peter Ahart Ranch, Honcut. 50 Comment
  RSA699613  Chloris virgata L. Ahart 2004-6-28 11147 Butte on the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville. 44 Comment
  CHSC6035  Choenomeles japonica M. MacArthur 1968-6-18 225 Butte Ca. 30 ft. E of Big Chico Creek, near end of PSA bld. bridge, Chico State College. 60 Comment
  JEPS119767  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC252669  Chorizanthe membranacea Lowell Ahart 1975-6-5 s.n. Butte North Honcut Creek, Honcut 45 Comment
  CHSC45529  Chorizanthe polygonoides var. polygonoides L. P. Janeway 1988-5-9 2663 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC87571  Chorizanthe stellulata R. D. Fischer 2004-4-28 140 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. On top of Disk Golf Course near canyon edge and toward the middle of the course. 365 Comment
  CHSC9142  Chorizanthe stellulata L. W. Gray 1970-5-5 27 Butte Collected ca. 30 yds. N. of the Chico-Paradise Skyway ca. 7 mi. E. of the intersection of the Skyway with Highway 99 E. Was located ca. 5 ft. from the cliffs. Comment
  UCD40403  Chrysolepis Rodney Gale Myatt 1971-6-13 728 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC36370  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  HSC43130  Cicendia quadrangularis Maralyn O'Meara 1974-4-20 267 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  SEINET10475748  Cinnamomum camphora Mary Susan Taylor Taylor 453 Butte Campus of the California State University, Chico. 61 Comment
  CDA13340  Circaea alpina subsp. pacifica G. F. Hrusa, T. D. Wilfred 1996-7-9 13188 Butte Sierra Nevada; on USFS 23N15, approx. 100 meters to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  SEINET10939934  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4739 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  SEINET5507008 Image available Cirsium andersonii E. B. Copeland 1931-7-27 n.s. Butte Jonesville 1650 Comment
  SEINET10474555  Cirsium breweri Mary Susan Taylor 1978-7-19 Taylor 1747 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 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
  CHSC21140  Cirsium occidentale var. venustum M. S. Taylor 1975-6-30 821 Butte Cohasset. Comment
  CHSC39418  Cirsium occidentale var. venustum J. D. Jokerst 1984-5-24 2033 Butte West edge of Table Mountain (W edge of mesa) ca 1 mile south of Cherokee Road. 365 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CDA42837  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; Rough area adjacent to fairway at Bidwell Golf Course. 0 Comment
  CAS-BOT-BC163542  Clarkia arcuata G. P. Van Eseltine 1918-5-5 1724 Butte Near Nimshew Comment
  HSC66229  Clarkia arcuata Thomas A. Welgan 1979-4-15 4 Butte 6 mi. N of Oroville, 100 ft. W of Cherokee Mtn. Rd. 366 Comment
  SEINET10453144  Clarkia arcuata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4159 Butte T20N R6E sw sec 6. Along Bean Creek Rd, ca. 5 mi s of Little Bald Rock, ca. 17 mi ne of Oroville. Foothill Woodland; 600 m. 600 Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  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
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CAS-BOT-BC163277  Clarkia mildrediae subsp. mildrediae H. Lewis; M. Lewis; F. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi. S. of Arch Rock on Feather River Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CHSC91105  Clarkia purpurea subsp. purpurea Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  POM32285  Clarkia purpurea subsp. purpurea A. A. Heller, H. E. Brown 1902-5-6 5472 Butte Berry Canyon (near Clear Creek). Comment
  CHSC27727  Clarkia purpurea subsp. quadrivulnera Robert A. Schlising 1978-5-20 3265 Butte SE of Chico Airport, north of Chico, along Cohasset Hwy. Comment
  SEINET7073009  Clarkia purpurea subsp. quadrivulnera 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
  CAS-BOT-BC172377  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CAS-BOT-BC164932  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC70753  Clarkia rhomboidea L. P. Janeway 1993-7-2 4419 Butte Southwest side of Swayne Hill 1 mi northeast of mouth of French Creek; along Road 23N28 1.3 mi north of Road 22N34. 743 Comment
  SD3273  Clarkia rhomboidea E. B. Copeland 1931-6-10 Butte Jonesville 1650 Comment
  UC1143245  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 759 Butte 1.4 mi s Arch Rock (Hwy. 24); Feather River Comment
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  CAS-BOT-BC439111  Claytonia exigua subsp. exigua Ahart; Jokerst 1985-3-24 4859 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  UC1562475  Claytonia lanceolata Vernon Oswald and Lowell Ahart 1990-6-20 4306 Butte s side Philbrook Creek (between Philbrook Reservoir and Carr Mine; ca 0.5 mi w of the Butte-Plumas county line) 1920 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  CAS-BOT-BC443763  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC3749  Claytonia rubra subsp. rubra R. L. Adams 1964-4-12 59 Butte Skyway, 1/2 mi. S. on Elliott Rd. Paradise. Comment
  CHSC40612  Claytonia rubra subsp. rubra L. Ahart; J. Jokerst 1985-3-24 4861 Butte Found growing on damp bare broken disturbed 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
  UC726582  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Magalia Comment
  CHSC42491  Clematis lasiantha Lowell Ahart 1987-5-9 5587 Butte Near a wash, along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC99570  Clematis lasiantha L. P. Janeway 2008-5-26 9366 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  CHSC28506  Clematis ligusticifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2250 Butte By bridge over creek, Jordan Hill Rd (Ponderosa Way on some maps), ca. .8 mi n of its jct with Concow Rd., ca. 5 mi e of Paradise. 426 Comment
  SBBG28886  Collinsia parviflora E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  CHSC46087  Collinsia sparsiflora var. collina Lowell Ahart 1989-3-25 6198 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 miles north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  SEINET10548312  Collinsia tinctoria Mary Susan Taylor 1981-6-19 Taylor 3959 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  POM278760  Collomia grandiflora Lyman Benson 3959 Butte First Summit, Oroville-Quincey. 1207 Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC26790  Comandra umbellata subsp. californica M. S. Taylor 1978-5-6 1588 Butte Scattered in Yellow Pine Forest on edge of serpentine, Magalia. 609 Comment
  CHSC38398  Convolvulus arvensis Vernon Oswald 1983-6-7 652 Butte Upper Bidwell Park, Chico, on the edge of Upper Park Rd. at Diversion Dam. 121 Comment
  JEPS124157  Conyza canadensis Lowell Ahart 2015-11-7 20614 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC288956  Conyza floribunda John Thomas Howell 1959-9-20 34632 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC237928  Cordylanthus M. S. Taylor; J. D. Jokerst 1979-10-13 2258 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise 609 Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC105592  Cordylanthus tenuis subsp. tenuis Barbara L. Wilson; Richard E. Brainerd, Lawrence Janeway, Barbara Cas 2010-8-7 16244 Butte Forbestown Road. Label says Lat. and Long. indicated +/- 36 feet. 806 Comment
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  JEPS60487  Cordylanthus tenuis subsp. viscidus T. I. Chuang, L. R. Heckard 1969-8-20 6738 Butte 0.2 mi below junction of Ridge Road on Humbug Road (near Nimshew (nw of Magalia)) 640 Comment
  CHSC20047  Cornus nuttallii M. S. Taylor 1975-4-17 480 Butte Corner of Arcadian and Sacramento Sts, Chico. Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  SBBG119778  Coronilla varia L. Ahart 2006-6-24 12862 Butte E side of dirt rd (Ponderosa Way), on Cohasset Ridge, ca. 4 air mi NE of Cohasset 1113 Comment
  UC1562396  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC46795  Corydalis caseana subsp. caseana R. A. Schlising; P. Broyles 1987-6-26 4526 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 Comment
  UC1594678  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East southwest of Oroville Dam. 213 Comment
  CAS-BOT-BC291331  Cotula coronopifolia Lowell Ahart 1980-4-9 2220 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC65421  Crassula aquatica Vernon Oswald 1988-3-16 3258 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves for Durham Mutual Ditch. 67 Comment
  JEPS117153  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
  JEPS103410  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS107325  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS119613  Crassula connata Lowell Ahart 2012-4-9 17837 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC20498  Crataegus monogyna M. S. Taylor 1975-5-8 564 Butte On nw corner of Arcadian and Sacramento, Chico. 60 Comment
  UCSB3581  Croton setiger Copeland, H. 1937-7-30 Butte Near Oroville Comment
  CHSC101152  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC41357  Crucianella angustifolia R. A. Schlising; J. D. Jokerst 1980-7-2 3816 Butte NW of De Sabla, 0.75 miles SW of crossing of Butte Creek. 658 Comment
  JEPS98582  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  RSA0106564  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte Northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  JEPS122263  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS121942  Cryptantha affinis Lowell Ahart 2014-7-7 19601 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC33134  Cryptantha flaccida J. D. Jokerst 1980-5-28 799 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  SD122568  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte At the Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  SEINET10497278  Cryptantha flaccida Lowell Ahart 1984-6-8 Ahart 4668 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico 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
  RSA325181  Cupressus macnabiana M. S. Taylor, V. Oswald 1984-4-4 5395 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  UC726581  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Magalia Comment
  SEINET5716134 Image available Cupressus macnabiana Lowell Ahart 1989-1 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles NE of Jarbo Gap.; Rocky Ridge 732 Comment
  CDA34741  Cuscuta californica var. breviflora L. Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC30781  Cuscuta subinclusa M. S. Taylor 1980-9-12 3331 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft w of the Hwy, n of a dirt rd. 975 Comment
  SEINET12122113  Cymopterus terebinthinus var. californicus R. A. Schlising 1980-1 3666 Butte N part of county, along Humboldt Rd, 1.9 mi NE of junction with Hwy 32 at Lomo, Carpenter Ridge Comment
  JEPS88266  Cynodon dactylon Vernon H. Oswald and Lowell Ahart 1996-5-27 7668 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the S paddock of Tract 7, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  POM72524  Cynoglossum grande Mrs. R. M. Austin 1883-04 25 Butte Butte County Comment
  CHSC116743  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CDA13836  Cyperus difformis G. F. Hrusa, T. D. Wilfred 1996-9-5 13564 Butte Butte Basin; Adjacent to Durnel Road north of Nelson Rd. Comment
  CHSC10729  Cyperus difformis Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS113688  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  UCD169397  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC114737  Cyperus difformis Lowell Ahart 1981-9-19 3187 Butte Cresta Power House 167 Comment
  POM313106  Cyperus difformis H. L. Mason, Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  CAS-BOT-BC114597  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-12 1919 Butte In rocks, gravel and sand on the N side of North Fork Feather River at Pulga 426 Comment
  CAS-BOT-BC114602  Cyperus eragrostis Ira L. Wiggins 1959-9-20 34640 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC94998  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC116125  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC110399  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC94783  Cyperus flavescens Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CDA38970  Cyperus flavescens L. Ahart 2000-8-23 8664 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC6603  Cyperus involucratus M. MacArthur 1968-6-13 313 Butte Location: SW yard of Building V, Chico Crare College campus. 60 Comment
  CHSC109757  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS116000  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow 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
  SEINET9084437  Cyperus niger L. Ahart 2000-6-17 8489 Butte North Table Mountain, W side of Cherokee Road, W of the cow chute and the large parking area, W of the lone oak tree, ca 7 air miles N of Oroville.. 404 Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC572227  Cyperus squarrosus H. S. Yates 1936-8-13 6101 Butte Butte Meadow Paunes Creek Quad., Butte Meadow 1341 Comment
  CAS-BOT-BC114206  Cyperus strigosus Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110395  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC81934  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  RSA263830  Cyperus strigosus J. T. Howell 1959-9-20 34636 Butte Eastern outskirts of Oroville. 61 Comment
  CAS-BOT-BC68040  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2148 Butte On Humboldt Peak, at Humboldt Summit 2154 Comment
  CHSC28412  Cystopteris fragilis M. S. Taylor 1979-9-28 2192 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  SEINET10535618  Cystopteris fragilis Mary Susan Taylor 1980-3-8 Taylor 2375 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC41919  Danthonia californica var. americana Lowell Ahart 1983-8-16 4291 Butte Near a bog, near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  CHSC39662  Danthonia unispicata Lowell Ahart 1983-6-21 4093 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC51951  Danthonia unispicata T. B. Devine 1980-4-28 725 Butte On Cherokee Rd ca 3.4 mi S of its jct with Hwy 70. Roadside. Comment
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CAS-BOT-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  SEINET10536233  Delphinium Mary Susan Taylor 1981-5-5 Taylor 3608 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  CHSC36086  Delphinium nuttallianum R. A. Schlising; J. D. Jokerst, R. Banchero 1980-6-16 3722 Butte 2.0 miles S of jct Skyway and Humboldt Road in Butte Meadows. 1432 Comment
  UC600482  Delphinium nuttallianum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CHSC61214  Delphinium patens subsp. patens Vernon H. Oswald; Lowell Ahart 1993-3-24 5236 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. 243 Comment
  UC1185307  Delphinium recurvatum H. E. Brown May 1 1897-May 15 1897 207 Butte near Clear Creek Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  UCD95786  Delphinium variegatum D. Finley 1998-5-25 6 -2 Butte town of Oroville, Table Top Mountain, 7.4 road miles on Cherokee Rd. from Table Mountain Blvd. Intersection. 396 Comment
  SEINET12094430  Delphinium variegatum J. D. Jokerst 1981-1 1307 Butte Ca 1/2-3/4 mi S of The Skyway along W side of Hwy 99 Comment
  UCD96667  Delphinium variegatum A. A. Heller 1918-4-19 12987 Butte 12 miles north of Chico. Comment
  CAS-BOT-BC16978  Delphinium variegatum subsp. variegatum H. E. Brown 1897-4-15 160 Butte Near Clear Creek Comment
  CAS-BOT-BC17023  Delphinium variegatum subsp. variegatum A. A. Heller 1918-4-19 12987 Butte Valley oak belt on the banks of Pine creek 12 miles north of Chico Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  CHSC59332  Dendromecon rigida J. L. Guardino 1992-3-23 4 Butte Paradise. 1/4 mi s of Circle Dr. terminus. 481 Comment
  CAS-BOT-BC192662  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  CHSC37270  Deschampsia danthonioides L. Ahart 1982-6-15 3562 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC6145  Deschampsia danthonioides E. Parreno 1968-4-19 70 Butte Cherokee rd. e of Cherokee cemetary. Comment
  UCD62543  Deschampsia danthonioides R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 10 miles S of Oroville on Marysville Road. Comment
  SEINET10508567  Deschampsia elongata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4184 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
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  SEINET10965506  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4065 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC19646  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. 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
  LA47703  Dicentra formosa E. B. Copeland; 1929-7-22 364 Butte Jonesville 1500.0 Comment
  UC1362265  Dicentra formosa Kingsley R. Stern 1964-5-15 2070 Butte ca 1.7 mi n Magalia (vicinity of Magalia Reservoir, just off Skyway road) Comment
  UC600687  Dicentra formosa H. F. Copeland 1929-6-9 Butte Jonesville 1524 Comment
  CAS-BOT-BC402381  Dicentra formosa subsp. formosa Lowell Ahart 1983-9-21 4465 Butte Near French Creek, about 2 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC402390  Dicentra formosa subsp. formosa D. Parkinson 1964-5-1 s.n. Butte In vicinity of Monk's Store, Cohasset Stage Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  CHSC118579  Dichelostemma capitatum subsp. capitatum Nancy Groshong 2017-4-30 1 Butte Magalia Serpentine. Just west of Coutelenc Road and Skyway, south side of Coutelenc Road. 701 Comment
  CHSC32721  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1981-4-8 3488 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds Jct, ca. 3 air mi s of Harbo Gap on Hwy 70. 426 Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  SEINET10839403  Dichelostemma multiflorum Lowell Ahart 1985-6-17 Ahart 5057 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10839398  Dichelostemma pulchellum Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4864 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET7073606  Dichelostemma volubile A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  CDA42841  Dichondra donelliana L. Ahart 2011-6-5 17367 Butte Just north of the small wash, 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 (air) southeast of Oroville. Comment
  SEINET4207208  Dichondra donelliana Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-8 3312 a Butte North Honcut Creek, Ahart Ranch about 2.5 mi NE of Honcut between Marysville & Oroville.; 0 46 Comment
  CAS-BOT-BC208972  Digitaria ischaemum John Thomas Howell 1961-9-22 36734 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  UCD64139  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On the bottom of North Honcut Creek, ca. 2.7 mi. NE of Honcut. 50 Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC150277  Diplacus grandiflorus Grace Kermode 1899-6-17 s.n. Butte Chico Comment
  CAS-BOT-BC150504  Diplacus grandiflorus A. A. Heller 1914-5-18 11407 Butte Between Chico and Forest Ranch, 14 miles from Chico; West slope of the Sierra near Forest Ranch 609 Comment
  CHSC37630  Diplacus grandiflorus T. B. Devine 1979-10-5 597 Butte Feather River Canyon, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  CAS-BOT-BC153219  Diplacus kelloggii A. A. Heller; H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek) Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CAS-BOT-BC154033  Diplacus torreyi A. A. Heller 1913-6-7 10799 Butte Near Stirling 1074 Comment
  SEINET8393803  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte westslopes of the Sierra near Forest Ranch. 701 Comment
  CAS-BOT-BC208612  Distichlis spicata Lowell Ahart 1977-7-24 1494 Butte Gray Lodge, 10 miles south-west of Gridley 30 Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  RSA726558  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte About 7 (air) miles west of Oroville. 34 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC14050  Dodecatheon hendersonii J. F. Goodwin 1972-3-11 183 Butte Ca. 3.6 mi se on Cherokee Rd from its intersection with Hwy 70, side of road. Comment
  CHSC31198  Dodecatheon hendersonii M. S. Taylor 1980-2-17 2358 Butte Along a dirt road, ca. 1/4 mi sw of Lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC52008  Downingia bella John P. McKeon 1980-4-22 10 Butte Ca. 20 m s of jct of Hwy 99 and Cana Hwy, 15 m w of Hwy 99, 19 km nw of Chico. 70 Comment
  CHSC70790  Downingia bicornuta var. bicornuta B. Castro 1995-6-6 574 Butte Ca 4 air mi SE of Chico, W of Hwy 99, on E side of the Oro-Chico Hwy ca 0.3 mi N of its jcn with Neal Road. 53 Comment
  CHSC103734  Downingia cuspidata Lowell Ahart 2010-5-16 16690 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. 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
  CHSC35006  Draba verna var. aestivalis R. E. Preston 1982-2-25 178 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  JEPS104415  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, ca 2 1/2 miles (air) east of the Brush Creek Work Center, ca 17 miles (air) northeast of Oroville. 1036 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CHSC94338  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard ... Field redacted by CHSC, contact the data manager for more information 1569 Comment
  JEPS120572  Drymocallis glandulosa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  SEINET10470596  Dryopteris arguta Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4207 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  CHSC77480  Dudleya cymosa subsp. cymosa Tim Stofer 1997-4-12 7 Butte On the west side of the trail 1 mi. from the head of the South Rim Train off South Park Dr. in upper Bidwell Park. 91 Comment
  CHSC66666  Dysphania ambrosioides Vernon H. Oswald 1996-7-17 8064 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  JEPS120589  Dysphania ambrosioides Lowell Ahart 2013-11-18 19274 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  UCSB64005  Dysphania ambrosioides Ahart, Lowell; Jokerst, Jim 1981-9-26 Butte Near the Sacramento River, about 6 miles west of Chico 36 Comment
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A 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
  CHSC94252  Dysphania 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
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC66174  Echinochloa crus-galli Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  JEPS124347  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC208563  Echinochloa oryzicola Lowell Ahart 1981-9-19 3192 Butte Butte County Rice Experiment Station 35 Comment
  UCD75790  Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 mi. NW Biggs, Biggs Rice Experiment Station. Comment
  CDA2000  Echinochloa oryzoides G. D. Barbe, T. C. Fuller 1977-9-2 2336 Butte Rice Experiment Station, Biggs. 0 Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10474219  Eclipta alba Mary Susan Taylor 1980-9-26 Taylor 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset Rds, Chico. 46 Comment
  CHSC113536  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC116008  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte Hamilton road, about 1/4 miles east of Riceton Highway. Rice field on the north side of Hamilton road, about 1/4 miles (air) north of Biggs. 30 Comment
  CHSC82228  Elatine ambigua Lowell Ahart 2002-4-10 9476 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC84010  Elatine ambigua Lowell Ahart 2003-6-19 10291 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  CHSC82217  Elatine chilensis Lowell Ahart 2002-4-22 9524 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
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 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
  JEPS117614  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CHSC43524  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44243  Eleocharis bella V. Oswald; L. Ahart 1988-7-13 3586 Butte Road to High Lakes e of Philbrook Reservoir. Along a streamlet in a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC83294  Eleocharis decumbens L. P. Janeway; B. Castro 2002-7-7 7608 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC31668  Eleocharis engelmannii L. Ahart 1979-6-2 1911 Butte On the bottom of a large wash in one of the farmed fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC85159  Eleocharis engelmannii John Dittes 2003-10-8 842 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  SEINET8795265 Image available Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC31667  Eleocharis macrostachya L. Ahart 1975-6-19 792 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43789  Eleocharis quadrangulata Vernon Oswald 1987-9-9 3239 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, ca. 0.4 mi e of the diversion dam for Crouch Ditch. 82 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  CHSC78315  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC28573  Elodea canadensis M. S. Taylor; J. D. Jokerst 1979-11-11 2278 Butte Irrigation ditch, at jct with Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC101797  Elymus elymoides subsp. californicus Lowell Ahart 2009-5-15 15683 Butte About 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC40457  Elymus elymoides subsp. elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  UC1133005  Elymus elymoides subsp. elymoides A. E. Wieslander 1933-6-23 323 Butte Bottle Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC31719  Elymus glaucus L. Ahart 1977-6-16 1420 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC65411  Elytrigia intermedia subsp. intermedia Vernon Oswald 1987-7-29 3155 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC32107  Epilobium ciliatum subsp. ciliatum L. Ahart 1976-6-27 1146 Butte Along North Honcut Creek; near Honcut. 45 Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  RSA725008  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC600555  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  SEINET9070861 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-1 388 Butte Jonesville 1500 Comment
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  SEINET10453013  Epilobium glaberrimum Mary Susan Taylor 1977-8-17 Taylor 1468 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC92730  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  RSA169435  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CAS-BOT-BC56941  Equisetum arvense Alice Eastwood 1912-6-15 s.n. Butte Deer Park, Lake Tahoe Region Comment
  SEINET3070848 Image available Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville 1300 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  JEPS103447  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC34778  Eragrostis mexicana subsp. virescens L. Ahart 1981-11-6 3229 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. Along edge of the road. 35 Comment
  CHSC41971  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-7 5428 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  HSC97053  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  JEPS110298  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  UC1562484  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-4 6544 Butte about 1/2 mi sw Enterprise Bridge across Lake Oroville (across Lake Oroville, along McCabe Creek); below high water line Lake Oroville 243 Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC91479  Eremogone cliftonii L. P. Janeway; Linnea Hanson 2005-6-29 8444 Butte Northern High Sierra Nevada. Plumas National Forest; south side of Hwy 70 on the south side of the canyon of North Fork Feather River, 100 m west of the western driveway to Cresta Powerhouse. Steep, north-northwest facing road cutbank. 455 Comment
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Jul 8 2014
  CAS-BOT-BC131515  Ericameria arborescens Lowell Ahart 1976-10-13 s.n. Butte 0.25 mile west of Pinkard Creek which is about 2 miles northwest of The Sly Creek Reservoir Comment
  UC1609003  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  SEINET10473505  Erigeron Mary Susan Taylor 1981-5-21 Taylor 3788 Butte In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. 1600 Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC13921  Erigeron canadensis M. S. Taylor 1974-9-14 318 Butte In Police Firing Range on s side of Chico Creek, opposite Golf Course, Bidwell Park, Chico. 91 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  SD5418  Erigeron lassenianus E. B. Copeland 1929-7-17 Butte Above Jonesville. 2000 Comment
  CHSC110034  Eriobotrya Lowell Ahart; Josephine Guardino, 2012-10-12 18481 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC216046  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  CHSC116974  Eriodictyon californicum Danielle Gee 2013-4-27 Butte Yankee Hill Rd., 30 yards off Hwy. 70, along road cut. 579 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  NY280796  Eriogonum heracleoides var. heracleoides C. L. Hitchcock 1960-6-12 22002 Butte 1 mi. N of Craters of the Moon National Monument. Comment
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Jul 31 2012
  CDA13260  Eriogonum luteolum var. luteolum G. F. Hrusa, T. D. Wilfred 1996-7-8 13104 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  SEINET10479534  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1980-9-19 Taylor 3339 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  SEINET10479575  Eriogonum ursinum Mary Susan Taylor 1982-6-6 Taylor 4608 Butte T22N R5E ne/ne sec 6. Pulga SW quad. Pulga serpentine, along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  UCD80057  Eriophyllum lanatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 g Butte City of Chico, Upper Bidwell Park,on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CDA20457  Eriophyllum lanatum var. croceum B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile southeast of Lumpkin Ridge Road about 1 1/2 miles east of Camp 18 about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC308158  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  CHSC21274  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1975-5-30 394 Butte On the n side of Upper Bidwell Park Rd, ca. 3 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  UC725409  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  SBBG8177  Eriophyllum lanatum var. integrifolium H. and M. Dearing 1938-6-21 2045 Butte 15 mi N of Chico Comment
  CHSC663  Erodium brachycarpum B. Hetherington 1936-9-2 Butte Chico. 57 Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  UC600712  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte woods between Willow Creek and Colby Creek; Jonesville 1524 Comment
  CHSC9287  Erysimum capitatum var. capitatum D. C. Burns 1971-4-3 116 Butte At base of cliff, ca. 3.5 mi e of Jarbo, (2.5 mi w of 1st bridge that crosses the n fork of the Feather River). 609 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  CHSC42039  Erythranthe bicolor Lowell Ahart 1986-5-20 5280 Butte Road goes to the Forbestown Reservoir, about 2 miles south-west of the Forbestown Reservoir, about 2 1/2 miles north-east of Forbestown. 822 Comment
  CHSC61182  Erythranthe bicolor Vernon H. Oswald 1993-5-18 5400 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
  CHSC91264  Erythranthe bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC78396  Erythranthe cardinalis Lowell Ahart 2000-7-18 8599 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC44683  Erythranthe glaucescens R. Banchero 1980-4-26 134 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd. 0.4 mi SW of the town of Cohasset. 426 Comment
  CHSC85410  Erythranthe glaucescens John Dittes; Josephine Guardino 1992-5-7 480 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; south-facing slope, north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC90150  Erythranthe glaucescens J. Lund 1980-4-19 Butte On the trail leading up to the falls above Richardson Springs 2.0 mi east of Chico. 121 Comment
  CAS-BOT-BC153858  Erythranthe glaucescens A. A. Heller 1938-5-4 15060 Butte Near the covered bridge over Butte Creek east of Chico Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC44736  Erythranthe guttata R. Banchero 1980-6-17 244 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC64222  Erythranthe guttata S. C. Morey 1983-8-1 653 Butte Chico meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC94605  Erythranthe guttata Lowell Ahart 2006-9-13 13322 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  SEINET10469665  Erythronium cliftonii Mary Susan Taylor 1981-4-14 Taylor 3535 Butte 3400 ft. T23N R4E nw sec 36, Pulga SW quad. S side of Ponderosa Way (Rim Rd) around low rise off logging spur rd around a landing in the open, ca. 1/10 mi N of its jct with Concow Rd, ca. 2 mi N of Lake Concow, ca. 3/4 mi S of Flea Mt. 1036 Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 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
  UC119848  Erythronium multiscapideum Mrs. R. M. Austin 1883-1 320 Butte Davis Creek Comment
  UC1731059  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town Comment
  CAS-BOT-BC504519  Erythronium multiscapideum Lois E. Edwards 1917-4-1 s.n. Butte De Sabla 548 Comment
  CAS-BOT-BC504529  Erythronium multiscapideum Lowell Ahart 1982-4-8 3272 Butte Along Swedes Falt Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC504537  Erythronium multiscapideum John Thomas Howell 1955-6-14 30438 Butte Magalia 731 Comment
  SEINET10966320  Erythronium multiscapideum Collins, 1981-3-15 Collins 1 Butte Paradise, ca 1/4 mile e of the Pearson and Pentz intersection on the w side of the Feather River Canyon (w branch). Wooded hillside. 1900 feet. 580 Comment
  HSC32620  Eschscholzia caespitosa Kitsy Kelly 1974-4-20 23 Butte Table Mtn. Volcanic area Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  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
  CAS-BOT-BC402964  Eschscholzia californica Mrs. C. C. Bruce 1893-3-1 2020 Butte Unspecified Comment
  HSC23330  Eschscholzia californica L. Walk 1971-4-9 3 Butte S bank of stream, .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99, Chico 30 Comment
  SEINET10476225  Eschscholzia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4860 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC419502  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mountain Comment
  CHSC46497  Eschscholzia lobbii Lowell Ahart 1975-5-12 776 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UCD95350  Eschscholzia lobbii Curtis Clark 1975-4-20 474 Butte Cherokee Road, 6 miles NE of junction with Table Mountain Road. Comment
  SD48502  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Highway, U. S. 40 alt., 18 miles northeast from Oroville. 700 Comment
  UCD34285  Euphorbia hooveri Beecher Crampton 1978-8-21 9659 Butte Ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  SEINET10973051  Euphorbia maculata Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5111 Butte About 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. Comment
  CDA38820  Euphorbia peplus L. Ahart 2012-4-17 17877 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) sothwest of Oroville. Comment
  SEINET10873987  Euphorbia serpillifolia Lowell Ahart 1984-8-19 Ahart 4785 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC101135  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  UC127844  Eurybia radulina Miss Kate Conger 1907-1-1 150 Butte Brush Creek Comment
  CHSC28422  Euthamia occidentalis M. S. Taylor 1979-10-2 2215 Butte On sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  RSA755369  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte On the south edge of a deep large ditch on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  CHSC38794  Festuca arundinacea Vernon Oswald 1983-5-9 462 Butte Upper Bidwell Park, Chico, along Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  CHSC112787  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  JEPS113257  Festuca occidentalis Lowell Ahart 2007-5-29 13942 Butte On the south side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oro 844 Comment
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CHSC95182  Fragaria virginiana R. D. Fischer 2005-6-5 826 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  CHSC63269  Frangula rubra Lowell Ahart 1994-6-5 7309 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CAS-BOT-BC55728  Frangula rubra subsp. rubra E. B. Copeland 1931-7-28 657 Butte west of North Willow Creek 1650 Comment
  JEPS120064  Fraxinus Lowell Ahart, Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the south side of Brig Chico Creek, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC108992  Fraxinus dipetala Lowell Ahart 2012-4-30 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  POM76346  Fraxinus dipetala C. C. Bruce 1898-03 2471 Butte Foothills [no specific locality given] Comment
  UC215516  Fraxinus dipetala Helen M. Edwards Jun 1917 Butte De Sabla Comment
  JEPS55690  Fritillaria Wayne Roderick 1967-4-16 Butte near Magalia Comment
  POM109752  Fritillaria affinis C. C. Bruce 1897-02 2024 Butte Little Chico Comment
  CHSC77456  Fritillaria eastwoodiae Laura Bogni 1997-4-5 13 Butte Magalia grove. West side of Coutelenc rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  CAS-BOT-BC505286  Fritillaria micrantha Lowell Ahart 1983-4-14 3933 Butte On east side of Woodleaf Creek above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  CHSC2286  Fritillaria recurva N. Maxwell 1929-3-17 Butte Forest Ranch. 548 Comment
  SEINET10469524  Fritillaria recurva Mary Susan Taylor 1981-4-8 Taylor 3506 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
  RSA127595  Galium aparine Peter H. Raven 1953-5-9 5431 Butte 8 miles from Bangor on Oroville Rd. Comment
  RSA754579  Galium aparine L. Ahart 2009-4-17 15548 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
  CHSC46591  Galium bifolium V. Oswald; L. Ahart 1989-7-12 3849 .5 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) SE of Philbrook Reservoir. 1901 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  UC426969  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville 1700 Comment
  CHSC48884  Galium divaricatum Vernon Oswald 1985-5-1 1741 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the S edge of the Golf course. 97 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC112200  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte On a dredge pile, in Wilson Creek, about 40 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC29629  Galium parisiense J. D. Jokerst 1980-5-28 805 Butte Table Mt. Top of North Table Mt, sides of Cherokee Rd ca 1/2 mi W of the edge of the Mt. Comment
  RSA81683  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 miles S of Cherokee on road to Oroville. Comment
  CHSC27950  Galium porrigens var. tenue M. S. Taylor 1979-3-20 1940 Butte Ca. 1 mi N of jct of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  JEPS52624  Galium sparsiflorum subsp. glabrius Lauramay T. Dempster 1964-7-24 4046 Butte 1 mi s Nimshew (near creekbed) 658 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10500747  Galium trifidum var. pacificum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC28430  Galium triflorum M. S. Taylor 1979-10-5 2337 Butte On SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CHSC93072  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. Northeast side near top of ridge 0.7 mi east-southeast of Flea Mountain; 0.3 mi east-southeast of Campbell Meadow. On road cutbank and above. 1158 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562433  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte below high-water line Lake Oroville (e of the Enterprise boat launch area, about 1/8 mi nw of the Enterprise Bridge across Lake Oroville) 259 Comment
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC169933  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 502 Comment
  CHSC48444  Garrya fremontii Vernon Oswald 1983-1-13 44 Butte Along Highway 32 ca. 8 mi n-e of Chico. 512 Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  CHSC78003  Gastridium phleoides Lowell Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS127202  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  JEPS108157  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River 1179 Comment
  JEPS104190  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, ca 100 yd ne of the buildings in Butte Creek House Meadow, ca 3 mi ne of Snag Lake, ca 7 mi (air) e of Butte Meadows. 1771 Comment
  CHSC11779  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Along Butte Creek. 1650 Comment
  CAS-BOT-BC208055  Genista monspessulana John Thomas Howell 1962-6-16 37574 Butte Magalia 731 Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  RSA754951  Gentiana newberryi var. tiogana Robert A. Schlising, A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles east of Jonesville, along Humbug Road. 1768 Comment
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC99325  Geranium carolinianum Lowell Ahart 2008-5-12 14753 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC8624  Geranium dissectum D. Patten 1968-3-5 71 Butte Collected ca. 3 mi. e of Chico on the n shoulder of Honey Run Road. 91 Comment
  SEINET10495121  Geranium dissectum Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4285 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CHSC7103  Geranium molle K. Cox 1969-4-4 15 Butte Bidwell Park. 4.2 mi E. of entrance to upper park. 60 Comment
  CHSC82395  Geranium molle Lowell Ahart 2002-5-7 9625 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  SEINET10495130  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4284 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CHSC42790  Geum macrophyllum L. P. Janeway 1987-6-26 2318 Butte SW end of Logue Meadows. 1325 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC134005  Gilia capitata subsp. mediomontana Mrs. R. M. Austin 1899-7-1 833 Butte Colby Comment
  UCD117708  Gilia capitata subsp. mediomontana L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC40921  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 4989 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM181675  Gilia tricolor Williams 1927-4-11 s.n. Butte Near Chico Comment
  CHSC185  Githopsis pulchella subsp. campestris M. Roberson 1956-4-9 Butte Near Paradise along Skyway. 548 Comment
  CHSC94051  Githopsis pulchella subsp. campestris R. D. Fischer 2005-5-18 725 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail, canyon facing. 426 Comment
  UCD80196  Githopsis pulchella subsp. campestris CNPS SN Foothill Team 2005-5-27 SNNR 0205 Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek. 201 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
  JEPS121950  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC82288  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC113451  Goodyera oblongifolia Lowell Ahart 2014-8-13 19700 Butte East bank of a small creek, about 100 yards southeast of the Way Point, about 200 yards southeast of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  POM168292  Goodyera oblongifolia Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC118061  Gratiola ebracteata Daphne K Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 231 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  RSA77829  Hackelia californica F. W. Peirson 1926-6-21 6771 Butte Butte Meadow, Humboldt Road. Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte 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. Comment
  UC897269  Helianthella californica subsp. nevadensis A. A. Heller 1915-5-25 11897 Butte ridge above Enterprise; Sierra Nevada 609 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 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
  CHSC36532  Hemizonella minima L. Ahart 1982-6-4 3532 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC309785  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  CHSC38361  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1983-7-28 939 Butte Upper Bidwell Park, Chico, ca. 200 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  UCR219268  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  RSA4484  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC45571  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1978-6-17 1778 Butte Along roadways, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC75250  Hesperevax caulescens Jennifer Slater 1997-4-27 35 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 60 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  CAS-BOT-BC310190  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-8 s.n. Butte 3 miles north-east of Honcut. Near North Honcut Creek. About 1/4 mile north of the Peter Ahart Ranch 70 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  RSA4421  Hesperolinon micranthum E. B. Copeland 1931-7-12 s.n. Butte Jonesville, dry bare ridge between Jones and North Willow Creeks. 1700 Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  CHSC113973  Heteranthera limosa Lowell Ahart 2014-10-14 19884 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC101168  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 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
  CHSC42135  Heterocodon rariflorum Lowell Ahart 1984-7-19 4727 Butte In a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  JEPS93842  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ione oak tree, nw of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  CAS-BOT-BC143628  Heteromeles arbutifolia Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  UC725600  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mi above Pentz (on the Paradise grade) Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 Comment
  CHSC97365  Hieracium albiflorum Paul Maslin 2005-5-18 63 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  OBI69218  Hirschfeldia incana Kari Fisher 2000-10-7 5 Butte Lindo Channel, 100 ft from E First Street 82 Comment
  SEINET10483353  Holodiscus boursieri Lowell Ahart 1985-6-16 Ahart 5044 Butte About 1/4 mile south-west of the Forbestown Resevoir, about 4 miles north-east of Forbestown. Comment
  CHSC31535  Holozonia filipes L. Ahart 1974-7-9 549 Butte Along banks of North Honcut Creek on moist soil. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113947  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC46275  Hordeum depressum Vernon Oswald 1989-4-20 3747 Butte Gray Lodge Wildlife Area, field on s side of Rutherford Rd and e side of the road to Parking Areas 12 and 13. 19 Comment
  CHSC8218  Hordeum murinum subsp. leporinum Dave Isle 1969-3-21 260 Butte Just off the S. side of the road through Upper Bidwell Park about 50 yards W. of the entrance to the golf course (E. of Chico). 59 Comment
  SEINET11911372  Horkelia fusca subsp. parviflora L. Ahart, Ahart, P. 1984-1 4753 Butte By the road, about 1 1/2 mi SE of Bald Mnt, 1/4 mi E of Oak Point, about 5 mi NE of Stirling City 1500 Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  UC860238  Horkelia tridentata subsp. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville Sierra Nevada 1676 Comment
  CAS-BOT-BC537883  Horkelia tridentata var. flavescens F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  SEINET3836429 Image available Hosackia argophylla var. fremontii A. A. Heller 1940-6-5 15699 Butte Feather River, between bridge and mouth of the West Branch of North Fork Comment
  CHSC60977  Hosackia incana Lowell Ahart 1993-6-26 7024 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC107597  Hosackia oblongifolia var. oblongifolia Lowell Ahart 2011-7-9 17579 Butte Along a small stream, north of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  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
  CAS-BOT-BC175967  Hypericum Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek 50 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  HSC100730  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  UCD169859  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 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
  CHSC10830  Hypericum concinnum Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  SEINET10472174  Hypericum concinnum Mary Susan Taylor 1977-6-25 Taylor 1385 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC11965  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville. 1550 Comment
  CAS-BOT-BC401196  Hypericum mutilum Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC45686  Hypochaeris radicata Vernon Oswald 1985-4-29 1728 Butte Bald Rock Rd. 0.3 mi e of Oroville-Quincy Hwy. 640 Comment
  CHSC3340  Ilex latifolia Robert L. Smith 1966-3-1 31 Butte U.S. Plant Introduction Station, 5 Miles S.E. of Chico, Calif. Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  JEPS43465  Iris chrysophylla Joan O. Danielson 1966-4-6 17 Butte Oregon Gulch Road 609 Comment
  CHSC61244  Iris hartwegii subsp. hartwegii K. B. McShea 1992-4-23 13 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  CHSC88058  Iris hartwegii subsp. hartwegii R. D. Fischer 2004-5-30 184 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  CHSC44625  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 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
  CHSC29767  Isoetes howellii M. S. Taylor 1980-5-24 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC61879  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC43573  Isoetes nuttallii Vernon Oswald; Lowell Ahart 1987-5-14 2901 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, ca. 1.0 mi n of the road connecting Humboldt and Humbug Roads. 1804 Comment
  SEINET10530328  Isoetes nuttallii Mary Susan Taylor 1980-5-27 Taylor 2678 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
  UC1609406  Isoetes nuttallii Lowell Ahart 1993-5-17 6945 Butte about 1 1/2 mi n and 2 3/4 mi e of Honcut (about 12 mi se of Oroville, on e side of North Honcut Creek); North Honcut Creek 53 Comment
  HSC66269  Isoetes nuttallii M. S. Taylor, J. D. Jokerst, L. Ahart 1980-6-4 2438 Butte 500 yards N of Swedes Flat Rd., 50 ft. W of Rocky Honcut Creek, 2 mi. E of Oroville-Bangor Hwy. 10 mi. S of Oroville 366 Comment
  SEINET223336 Image available Isoetes nuttallii B. Ertter, J Strachan; L. Ahart 1980-5-7 3289 Butte Ca 2.5 mi NNE of Honcut between Oroville and Marysville 31 Comment
  CHSC60643  Isoetes orcuttii Vernon H. Oswald 1993-4-15 5271 Butte Upper Bidwell Park, Chico, in the vernal pool located at the SE corner of the fenced enclosure along the north boundary, somewhat E of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CAS-BOT-BC112388  Isolepis carinata Lowell Ahart 1983-6-12 4048 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, 425 Comment
  UC1609343  Isolepis setacea Lowell Ahart 1993-6-20 6965 Butte about 1/2 mi s Quartz Hill; s of Quartz Hill 1219 Comment
  CHSC108964  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 and 13, Lower Bidwell Park, Chico. 65 Comment
  UC1299264  Jensia rammii Freed W. Hoffman 1949-5-14 3179 Butte 14.7 mi w Challenge (on Oroville Road); Black Bart Monument Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  JEPS120841  Juncus acuminatus Lowell Ahart 2013-7-9 18829 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC76017  Juncus articulatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8147 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
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  SEINET10872268  Juncus brachyphyllus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4135 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10472239  Juncus bufonius Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4141 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  SEINET10872253  Juncus bufonius Mary Susan Taylor 1982-4-28 Taylor 4366 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC102420  Juncus bufonius var. bufonius Lowell Ahart 2009-7-9 16005 Butte On damp to wet soil, in ditch, 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
  CHSC113367  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS127084  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC116305  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  HSC100819  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte ~30 yd. E of Know-northing Creek, N side of Lumpkin Ridge Rd., 1/2 mi. SW of the intersection of Lumpkin Ridge Rd., County Rd. and road to Cascade, 5 (air) mi. NE of Feather Falls. 1225 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  RSA0113969  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15144 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 0.25 miles west of the Ponderosa Dam. 258 Comment
  SEINET10472479  Juncus effusus var. pacificus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4099 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS106096  Juncus ensifolius Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC27060  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut. On the bottom of vernal pools and swales in a farmed field. 50 Comment
  CAS-BOT-BC110136  Juncus leiospermus var. leiospermus J. D. Jokerst 1979-5-2 1227 A Butte On top of North Table Mountain, ca. 200 meters south of Cherokee Road along the east edge of section 17, southwest of benchmark 1263. 396 Comment
  JEPS110154  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine 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 of Or 354 Comment
  JEPS117320  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  JEPS98325  Juncus oxymeris Lowell Ahart 2000-6-17 8486 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC54194  Juncus patens Vernon H. Oswald; Lowell Ahart 1991-5-31 4638 Butte Dan Beebe Trail, Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool and on the north side of Oroville Dam Blvd East, between the 4 and 5 mile posts (ca. 4.5 miles). Along a drainage crossing the trail. 85 Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS113857  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  JEPS116053  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS113761  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  JEPS87130  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte ca. 2 mi. w. Oroville Dam (near Longs Bar Monument, n. side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
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Nov 1 2009
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CHSC50686  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte 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
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  CDA42980  Kickxia elatine L. Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 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
  CHSC103754  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC103990  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC4140  Kumlienia hystricula R. Carter 1966-4-28 379 Butte Found in Feather R. Canyon 11 mi. NW of Butte-Plumas Co. line along N side of Hwy 70. On cliff above road just S of water fountain. 701 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC32543  Lactuca serriola S. Posner 1972-9-21 Butte 100 yds. west of Nord Ave, 200 yards south of Sacramento Ave., in almond orchard. Chico. Comment
  JEPS115631  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville 31 Comment
  CAS-BOT-BC341296  Lagophylla glandulosa R. F. Hoover 1965-10-16 9719 Butte Deer Creek road east of Chico Comment
  UC175392  Lagophylla glandulosa A. A. Heller 1913-9-16 11138 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  CHSC40551  Lasthenia californica Ahart; Jokerst 1985-3-24 4869 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC8117  Lasthenia californica J. G. Moore 1969-4-13 74 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  JEPS107753  Lasthenia californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
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Jan 19 2011
  UC135155  Lasthenia californica subsp. californica Dr. E. B. Copeland 1903-4-10 3038 Butte Chico Comment
  CHSC49826  Lasthenia ferrisiae Vernon Oswald 1990-4-11 4160 Butte Campus of Butte Community College, along the edge of the road just west of the Horse Arena. 91 Comment
  CAS-BOT-BC354124  Lasthenia fremontii H. E. Brown 1897-4-15 153 Butte Near Clear Creek. 53 Comment
  CHSC46948  Lasthenia fremontii Lowell Ahart 1978-5-1 1694 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10475352  Lasthenia fremontii Lowell Ahart 1983-5-12 Ahart 3974 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS120546  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. In NE - SW trending swale bottom, ca 500 ft E of Cohasset Rd in area of grassland and scattered shallow vernal pools. Comment
  UCSC004638  Lasthenia glabrata subsp. glabrata Lowell Ahart 2005-6-1 11843 Butte T23N, R15E, Section 30, Hwy 70, east of the Plumas Co Airport, about 3 miles east of Beckwourth 1412 Comment
  HSC38105  Lasthenia gracilis Thomas W. Nelson, Jane P. Nelson 1976-5-9 2451 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CHSC45907  Lathyrus angulatus Lowell Ahart 1978-5-15 1727 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS95616  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CHSC42561  Lathyrus sulphureus Lowell Ahart 1987-5-22 5659 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UCD73059  Layia fremontii 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
  CAS-BOT-BC321756  Layia fremontii A. A. Heller 1914-4-4 11292 Butte Hills 8 miles N of Oroville Comment
  CHSC93791  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley. 28 Comment
  JEPS117216  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC215735  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near Cohasset Comment
  RSA719538  Lepechinia calycina Michael A. Vincent 2006-7-29 12881 Butte East of Chico along Rt. 32. Comment
  RSA755760  Lepechinia calycina L. Ahart 2009-5-23 15759 Butte East side of Guardians Trail, about 150 yards southwest of the Ten Mile House Road, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC42702  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA715890  Lepidium didymum L. Ahart 2005-4-2 11685 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC31882  Leptosiphon acicularis L. Ahart 1974-4-11 361 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  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
  HSC23389  Leptosiphon bicolor J. D. Sagray 1970-4-20 10 Butte 4 mi. N of Chico on S side of upper Bidwell Park Rd., 100 yds. from end of rd. 175 Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC109164  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC35973  Leptosiphon ciliatus M. S. Taylor 1982-6-24 4740 Butte In meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC36813  Leptosiphon ciliatus L. Ahart 1982-6-15 3576 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC62776  Leptosiphon parviflorus L. P. Janeway 1993-5-2 4340 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 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
  CHSC94725  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  JEPS20646  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  RSA725007  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte At the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  UC725484  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  RSA32020  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  SEINET10863158  Lewisia triphylla Mary Susan Taylor 1976-5-3 Taylor 1103 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  SEINET10469578  Lilium washingtonianum Mary Susan Taylor 1980-7-6 Taylor 3065 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CAS-BOT-BC133049  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  POM282581  Limnanthes alba Hattie Morrison 1928-05 s.n. Butte Near Oroville, Sierra Nevada Mountain Range, Feather River. Upper Sonoran. 305 Comment
  UCD116449  Limnanthes alba Jeff Dole 1986-4-27 s.n. Butte 2.1 miles east of Bean Creek Road, along Highway 44. Comment
  CHSC35708  Limnanthes alba subsp. versicolor J. D. Jokerst 1982-5-19 1576 Butte Top of Lumpkin Ridge 2 mi E of Camp 18, at the S edge of the ridge. 1280 Comment
  HSC23392  Limnanthes douglasii Willis Ball 1970-3-7 85 Butte Growing 1/4 mi. E of Hwy. 99E, beside Skyway to Paradise from Chico. 61 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 Comment
  CHSC51887  Limnanthes douglasii subsp. rosea Suzanne Peters 1988-3-15 49 Butte Vicinity Salmon Hole, ca 5 mi E of Chico Municipal Golf Course. 121 Comment
  HSC93980  Limnanthes douglasii subsp. rosea Mary Drumm 1996-3-17 16 Butte 10 mi. N of Chico on Hwy. 99 where 99 intersects Hamilton Norde Cana Rd. 61 Comment
  UC869486  Limnanthes douglasii subsp. rosea A. A. Heller 1917-4-15 12679 Butte ten mi n Chico 64 Comment
  UC203613  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 mi from Oroville (on Chico-Oroville road, below blue oak belt) Comment
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  CHSC112705  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS122228  Limosella acaulis Lowell Ahart 2014-4-26 19413 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
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  JEPS115836  Linanthus bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC1586577  Linanthus bolanderi Vernon H. Oswald and Lowell Ahart 1991-6-5 4644 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SEINET10496794  Linanthus ciliatus Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4645 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC29040  Linanthus dichotomus J. D. Jokerst 1980-3-31 532 Butte Several miles S of Cohasset Hwy, eastern portion of Cohasset Ridge. 670 Comment
  UCD118649  Linanthus dichotomus subsp. meridianus M. Vincent 1961-3-28 18 Butte Skyway between Chico and Paradise. Bluff overlooking Butte Creek. 609 Comment
  SEINET10837197  Linanthus filipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4257 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  CDA20241  Lindernia dubia G. D. Barbe 1984-8-25 4189 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
  CHSC97400  Lindernia dubia var. anagallidea Robert Fischer 2006-6-18 1006 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  CHSC44285  Linum lewisii var. lewisii Vernon Oswald 1988-6-14 3383 Butte Rim Rd. or Ponderosa Way (23N06) 0.8 mi se of Concow Rd., ne of Lake Concow. Scattered on a brushy serpentine outcrop. 975 Comment
  CHSC31954  Lipocarpha aristulata J. D. Jokerst; R. A. Schlising 1980-7-2 926 Butte Adjacent to Garland Rd. 1.3 mi SE of Hwy 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  UC1562297  Lipocarpha micrantha Lowell Ahart 1990-7-15 6566 Butte about 1/4 mi nw of the Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area) 243 Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 Comment
  CDA14774  Lithocarpus densiflorus var. densiflorus G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3377 Butte 1.1 miles northeast of Mountain House. 1051 Comment
  CHSC45969  Lithophragma bolanderi Lowell Ahart 1974-4-7 355 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC50059  Lithophragma bolanderi Lowell Ahart 1990-3-28 6428 Butte Along the south edge of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UC402468  Lithophragma bolanderi Mrs. R. M. Austin 1896-1 254 Butte Mud Creek Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  SEINET10483074  Lithophragma bolanderi Mary Susan Taylor 1980-4-16 Taylor 2496 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  CAS-BOT-BC428450  Lithophragma trifoliatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  UC1562424  Logfia gallica Lowell Ahart 1990-5-25 6480 Butte about 1/8 mi nw Enterprise Bridge (e of the Enterprise Boat Launch Area, below the highwater line of Lake Oroville); Lake Oroville 271 Comment
  CHSC107077  Lolium multiflorum V. Lockie 2010-3-2 Butte Upper Bidwell Park. Found near the Horseshoe Lake area. 103 Comment
  CHSC52153  Lolium multiflorum J. G. Moore 1969-4-21 4 Butte Salem St. between 10th and 11th Sts., e side of road, Chico. 60 Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  RSA754796  Lolium perenne subsp. multiflorum L. Ahart 2009-5-8 15669 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  UC726872  Lomatium caruifolium var. denticulatum A. A. Heller 1938-4-23 15056 Butte 1/4 mi. e. Jarboe Pass (on State Hwy. #24) Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  CHSC38736  Lomatium dasycarpum subsp. tomentosum Vernon Oswald 1983-3-13 164 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Salmon Hole and Parking Area P (1.7 mi e of the power lines). 182 Comment
  CHSC87549  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Sierra Nevada foothills on the edge of upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on top of a ridge next to the old Hwy 32 Road near the north end of Humboldt Trail. 426 Comment
  UC726871  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1939-4-14 15380 Butte near Pine Creek (in field along rd. e. of U.S. #99E) Comment
  RSA795765  Lomatium macrocarpum L. Ahart 2012-4-20 17897 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  JEPS117222  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CAS-BOT-BC240446  Lonicera hispidula C. R. Quick 1941-6-8 41 -05 Butte About 2 miles S. of Big Bar Mt. Comment
  CHSC50660  Lonicera interrupta Lowell Ahart 1990-6-16 6510 Butte On the north side of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  JEPS97342  Lotus corniculatus Lowell Ahart 1995-8-19 7612 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  UC128825  Lotus oblongifolius var. oblongifolius Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CDA27290  Lotus oblongifolius var. oblongifolius Vernon H. Oswald & Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mile north of Four Trees-Coyote Gap Road. Comment
  UC598644  Lotus purshianus var. purshianus John Bright 1936-5-6 13042 Butte near Chico; Mud Creek Comment
  UC1562315  Lotus stipularis Vernon Oswald and Lowell Ahart 1990-6-27 4334 Butte 0.5 mi n Coyote Gap (Four Trees Rd) 1341 Comment
  UC204727  Lotus wrangelianus A. A. Heller 1914-5-28 11238 Butte 8 mi n Oroville Comment
  UCD66036  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-2 06- 28 -LU Butte Feather River, east bank at Oroville Wildlife Area south of Thermolito. Access from DFG Wildlife Area levee road. 23 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins 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
  CHSC71185  Ludwigia palustris Lowell Ahart 1998-6-30 8013 Butte In a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  CHSC97355  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610536E 4412518N. 292 Comment
  CHSC31442  Lupinus albicaulis var. shastensis L. Ahart 1980-9-10 2642 Butte Along the edge of the road ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  SEINET5766838 Image available Lupinus albifrons subsp. eminens Lewis S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  JEPS119527  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  RSA30735  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes. Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  SEINET10484003  Lupinus grayi Lowell Ahart 1985-6-17 Ahart 5046 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  RSA715593  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada, south side of Cascade Creek 0.4 mile east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  UC1609313  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte about 1/4 mi n Jackass Flat (Mooreville Ridge, about 1 1/4 mi (air) nw of Lost Creek Reservoir); Mooreville Ridge, nw of Lost Creek Reservoir 1188 Comment
  UC725973  Lupinus nanus A. A. Heller 1938-4-14 15034 Butte summit of Table Mountain 609 Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  SEINET10484054  Lupinus nanus subsp. nanus Mary Susan Taylor 1981-4-14 Taylor 3528 Butte Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 137 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 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
  CHSC33125  Lupinus polycarpus J. D. Jokerst 1981-4-10 1291 Butte Top of North Table Mt., ca 300 m N of Cherokee Rd at the W edge of the mountain. Comment
  SEINET10937164  Lupinus polyphyllus subsp. superbus Mary Susan Taylor 1977-7-15 Taylor 1418 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  CHSC94276  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  CHSC52706  Luzula cascadensis L. P. Janeway 1987-6-19 2227 Butte Along Sly Creek, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Creek Reservoir. 1097 Comment
  UCD142129  Luzula comosa M. Vincent 1964-4-11 566 Butte Cherokee Road, beside the Campbell ranch 1 mile from Cherokee (Oroville Rd.). Comment
  CDA34742  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  CHSC52714  Luzula comosa var. subsessilis L. P. Janeway 1987-5-10 2040 Butte Near PG and E ditch ca 3/4 mi north of DeSAbla Reservoir and near where Doe Mill Road crosses the ditch. 853 Comment
  CHSC47583  Luzula macrantha Lowell Ahart 1975-3-23 717 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. 51 Comment
  CHSC55457  Luzula macrantha L. P. Janeway 1991-4-30 3918 Butte At the head of Spring Hollow, 2 mi east of confluence of South and North Forks Feather River (under Lake Oroville). 350 Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  CHSC110347  Luzula subsessilis L. P. Janeway 2013-5-5 11098 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SEINET10498035  Lycopus americanus Mary Susan Taylor 1977-10-10 Taylor 1520 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
  CHSC46308  Lythrum californicum Vernon Oswald 1989-5-23 3780 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  CHSC30953  Lythrum hyssopifolia L. Ahart 1980-7-4 2456 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UC108060  Lythrum hyssopifolia Mrs. R. M. Austin Apr, 1899 840 Butte Butte County Comment
  SEINET10474799  Madia bolanderi Mary Susan Taylor 1977-8-17 Taylor 1469 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  RSA746979  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  JEPS32701  Madia exigua Lewis S. Rose 1963-6-2 63069 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte 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
  CHSC25449  Madia glomerata Marc Hayes; Warner 1977-9-11 70 Butte Along road to Butte Meadows, exactly 5.8 mi from the turn to Butte Meadows on Hwy 32 onto Humboldt Road. 1127 Comment
  CAS-BOT-BC342955  Madia gracilis Clarence R. Quick 1963-7-16 63 -41 Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC40301  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CAS-BOT-BC342950  Madia gracilis L. P. Janeway 1995-6-19 4800 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of steep slope overlooking Frey Creek 1066 Comment
  SEINET10474812  Madia gracilis Mary Susan Taylor 1977-8-17 Taylor 1458 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  SEINET10474826  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2669 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
  RSA0035822  Madia rammii Lowell A. Ahart 2008-6-13 14823 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC345240  Madia subspicata David D. Keck 1933-5-30 2404 Butte 3 miles southwest of Richardson Springs, on bluff at south side of Mud Creek Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC42809  Maianthemum racemosum L. P. Janeway 1987-7-4 2433 Butte Along the Concow Rd towards Jones Mdw ca 1 mi from Bald Mtn. 1786 Comment
  CDA13274  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13122 Butte Plumas National Forest; N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CDA31965  Malva nicaeensis L. Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  JEPS119992  Malva nicaeensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte Near the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC36960  Malva parviflora M. S. Taylor; L. Ahart, J. D. Jokerst 1982-4-28 4360 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/4 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CDA34161  Marrubium vulgare L. Ahart 2009-4-22 15581 Butte On the east side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC116981  Marrubium vulgare Matthew Forster 2013-5-7 Butte Lower Bidwell Park, along bike path just east of Hwy. 99. 65 Comment
  SEINET10530353  Marsilea vestita Mary Susan Taylor 1978-9-8 Taylor 1879 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC105266  Marsilea vestita subsp. vestita Lowell Ahart 2010-6-20 16821 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC31380  Matricaria discoidea J. D. Jokerst 1979-4-20 1208 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd, and the E edge of mt. 396 Comment
  JEPS115307  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico Comment
  SEINET10474310  Matricaria matricarioides Mary Susan Taylor 1975-4-11 Taylor 456 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CHSC46112  Matricaria occidentalis J. D. Jokerst 1982-4-29 1541 Butte Grey Lodge Waterfoul Management Area. Along the edge of Rutheford Rd. where it turns 90 degrees to the north in the center of section 14. Comment
  CHSC3518  Medicago arabica John Francis 1966-4-16 110 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC102722  Medicago lupulina Lowell Ahart 2009-6-3 15834 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
  CHSC45286  Medicago lupulina Vernon Oswald 1987-5-12 2387 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, near the Crouch Ditch Dam. 79 Comment
  SEINET12155162  Medicago orbicularis P. L. Ricker 1912-1 3958 Butte Chico Comment
  SEINET10874086  Medicago sativa Mary Susan Taylor 1981-5-11 Taylor 3688 A Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  CHSC46606  Melica aristata V. Oswald; L. Ahart 1989-7-12 3843 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  JEPS48096  Melica californica Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2691 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  RSA500431  Melica geyeri Vernon H. Oswald 1989-5-28 3787 Butte Logging road paralleling the west side of Butte Creek, 3.1 miles south of Humboldt Road (near Butte Meadows). 1293 Comment
  CAS-BOT-BC281301  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, ca 0.25 mile W of Milsap Bar, ca 25 miles NE of Oroville 500 Comment
  CAS-BOT-BC281020  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Skirting the N flank of Humboldt Peak on the Butte - Plumas county border, S of the Pacific Crest Trail 2072 Comment
  CHSC34062  Melica stricta L. Ahart; M. S. Taylor 1981-8-15 3049 Butte At base of cliffs near dirt road from Coon Hollow to Poison Springs, ca. 1 mi se of Snow Mt, ca. 15 mi ne of Inskip. 2000 Comment
  CHSC31422  Melilotus albus L. Ahart 1980-9-10 2629 Butte Along edge of the road ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  CDA42903  Melissa officinalis L. Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC90202  Melissa officinalis Robert Kissane 1989-4-22 16 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  CHSC92381  Melissa officinalis Lowell 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 Big Bend Road. 293 Comment
  JEPS119627  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte About 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 294 Comment
  CHSC21038  Mentha X piperita M. S. Taylor 1975-10-3 923 Butte Along slough, at bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44351  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  CHSC42857  Micranthes nidifica Lowell Ahart 1987-5-22 5664 Butte In a small wash, about 1/4 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC348703  Microseris acuminata John Thomas Howell; Gordon H. True 1967-5-7 42172 Butte Northwest outskirts of Oroville north of the Feather River Comment
  JEPS104031  Microseris acuminata Lowell Ahart 2003-4-10 10058 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  JEPS115236  Microseris acuminata Lowell Ahart, John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 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 Chic 407 Comment
  UCD80105  Microseris acuminata CNPS SN Foothill Team 2005-3-30 SNFN 0071 Butte CDFG North Table Mountain Wildlife Area, approximately 2 mi. west of parking and 200-300 m north. 372 Comment
  SEINET10971137  Microseris acuminata Mary Susan Taylor 1978-4-14 Taylor 1562 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
  SEINET10475279  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 Ahart 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC322774  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  POM183423  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC103689  Microsteris gracilis Lowell Ahart 2010-4-30 16599 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SD4012  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  SEINET10830535  Mimulus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5242 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
  UCSB44169  Mimulus angustatus Reisentz, Paul 1979-5-13 Butte 4 miles West on Cherokee Road from Highway 70 at Cherokee Point Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  CDA14055  Mimulus bicolor G. F. Hrusa, T. D. Wilfred 1997-5-1 13702 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  JEPS108837  Mimulus geniculatus Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  SEINET10570230  Mimulus glaucescens Mary Susan Taylor 1975-6-25 Taylor 796 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  SEINET10962493  Mimulus kelloggii Mary Susan Taylor 1978-5-6 Taylor 1574 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  JEPS11922  Mimulus microphyllus F. W. Pennell, A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  CHSC38705  Mimulus moschatus Vernon Oswald 1983-5-27 565 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC44808  Mimulus moschatus R. Banchero 1980-6-6 201 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 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
  SEINET10929294  Mimulus moschatus Mary Susan Taylor 1981-5-15 Taylor 3747 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  UC1509660  Mimulus nasutus M. S. Taylor and K. Tharp 1983-3-12 5442 Butte ca. 3 mi sse Chico (along small rd. off Stillson Canyon Rd. (leading to Mannion property)); Chico quad. 152 Comment
  UC1586471  Mimulus nasutus Vernon H. Oswald and Lowell Ahart 1991-7-15 4741 Butte ca. 5.5 air mi ene Brush Creek (Milsap Bar Rd. (Forest Rd. 22N62), 6.4 mi w of Feather Falls-Little Grass Valley Rd. (Forest Rd. 22N94)) 845 Comment
  JEPS117422  Mimulus primuloides subsp. primuloides Lowell Ahart 2010-9-28 17255 Butte On damp black soil, about 10 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  UC196166  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  JEPS117548  Mimulus tricolor Lowell Ahart 2010-6-20 16820 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  SEINET7072713  Mimulus tricolor A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  POM181509  Mimulus tricolor H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  RSA20869  Minuartia californica C. B. Wolf 1937-3-29 8330 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  UCR227349  Minuartia californica 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
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  SEINET11933236  Minuartia douglasii S. E. Bigbee 1984-1 62 Butte Ca 400 yds W of Cherkee Rd on Table Mt., ca 12 mi N of Oroville 396 Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  SEINET6645727  Mollugo verticillata R. R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC435066  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte Eastern outskirts of Oroville 60 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
  CAS-BOT-BC219951  Monardella breweri subsp. lanceolata Lowell Ahart 1984-5-28 4652 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  SD6883  Monardella breweri subsp. lanceolata R. M. Austin Jun 1883 Butte Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  UC2035806  Monardella odoratissima subsp. glauca H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 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
  UC600442  Monardella odoratissima subsp. pallida E. B. Copeland 1931-7-12 Butte Ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  UC1564781  Monolepis nuttalliana V. Oswald and L. Ahart 1989-6-27 3833 Butte ca. 3.3 mi. (air) s.e. Jonesville (Humbug Rd. at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  SEINET11933619  Montia fontana subsp. chondrosperma M. S. Taylor, Oswald, V. 1984-1 5384 Butte S side Humbug Rd., ca 6 mi NE of Honey Run Covered Bridge, ca 10 air mi NE of Chico 372 Comment
  CAS-BOT-BC260532  Muhlenbergia filiformis Lowell Ahart 1983-8-16 4305 Butte 3 miles S of Butte Meadows, near Bull Hill Road 1600 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
  CHSC39428  Muhlenbergia filiformis L. Ahart 1983-8-16 4305 Butte Near Bull Hill Road, ca. 3 miles south of Butte Meadows. 1450 Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 Comment
  CAS-BOT-BC275161  Muhlenbergia richardsonis Lowell Ahart 1981-8-15 3040 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC44274  Myosotis discolor V. Oswald; L. Ahart 1988-6-17 3406 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Near the creek where it flows through a meadow. 1066 Comment
  CHSC42763  Myosotis laxa Lowell Ahart 1987-8-3 5848 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET946111  Myriophyllum brasiliense Lowell Ahart 1987-1 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 610 Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC39100  Nama lobbii R. A. Schlising; K. Tarp 1983-8-12 4437 Butte N part of county, N of Philbrook Reservoir on unnamed road. 1828 Comment
  CHSC3169  Narcissus pseudonarcissus Dona Kingsford 1966-3-12 Butte Yard at 528 W. 3rd. Street, Chico. Comment
  CHSC88162  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  JEPS105275  Narthecium californicum Dean W. Taylor 1995-8-6 15391 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  CHSC113498  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA4131  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville. 1550 Comment
  UC1609052  Navarretia divaricata Lowell Ahart 1993-7-29 7125 Butte 6.5 mi ne Stirling City (2.5 mi ne of Bald Mountain, .12 mi n of the Snow Mine, on the e side of an old water ditch for gold mining) 1676 Comment
  CHSC105683  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-21 17209 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC111149  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  CHSC47065  Navarretia filicaulis R. A. Schlising; P. Broyles 1988-7-9 4573 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  JEPS107908  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  UC177516  Navarretia filicaulis H. M. Hall 1914-7-31 9824 Butte Forest Ranch, Humboldt Road Sierra Nevada Mountains Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS120937  Navarretia intertexta Lowell Ahart 2013-5-23 18705 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CDA40267  Navarretia intertexta subsp. intertexta L. Ahart 2005-6-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g 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 over a diversion canal). 87 Comment
  UCD106118  Navarretia intertexta subsp. propinqua L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC20897  Navarretia leptalea M. S. Taylor 1975-8-31 883 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC75581  Navarretia leucocephala Mrs. Elbridge Miles Butte Comment
  CHSC36434  Navarretia subuligera D. H. Ikeda 1980-5-31 390 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  CHSC36717  Navarretia tagetina D. H. Ikeda 1980-5-8 345 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  SEINET3163758  Navarretia tagetina L. S. Rose 1939-6-5 39197 Butte Honcut 30 Comment
  UC535093  Navarretia viscidula H. F. Copeland 1932-6-24 Butte about 5 mi n Chico (on the Humboldt Road, near Hog Springs) 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
  SEINET3450874  Nemacladus interior Unknown 2003-7-10 10371 Butte Ponderosa Dam, Ponderosa Dam, about 1.5 air miles east, both sides of the dirt road to the power generator, north side of Ponderosa Reservoir 490 Comment
  CHSC38459  Nemophila heterophylla Vernon Oswald 1983-2-23 96 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 700 ft. e of Diversion Dam Parking Lot. 134 Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  POM65379  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  SEINET10497053  Nemophila heterophylla Mary Susan Taylor 1981-3-16 Taylor 3411 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
  CHSC50328  Nemophila parviflora var. austiniae Vernon Oswald 1990-6-4 4283 Butte Logging road just south of Humbug Summit and Cold Springs, ca. 0.25 mile northwest of Humbug Rd, on a branch of Willow Creek. 1950 Comment
  CHSC39097  Nemophila spatulata R. A. Schlising; K. Tarp 1983-8-12 4449 Butte N and E of Philbrook Reservoir in N part of county, about 1.2 mi W of Plumas County line on road to Carr Mine; in crevices and draws of slate outcrop. 1981 Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC95359  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8890 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  POM195804  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. Comment
  SEINET12265276  Odontostomum hartwegii J. H. Morris 1932-1 s.n. Butte Durham Comment
  CHSC47370  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte Joie Osgood Ranch, about 1 mile north-east of Honcut Cemetery, 4 miles north-east of Honcut. 79 Comment
  UC1499354  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte 4 mi NE of Honcut ( Joie Osgood Ranch) 85 Comment
  RSA0059254  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  RSA523836  Orthocarpus erianthus Gordon H. True Jr. 1936-3-26 375 Butte Gray Lodge Refuge. 23 Comment
  SEINET12326946  Orthocarpus purpurascens Unknown 1981-1 12 Butte no further locality 372 Comment
  CHSC108973  Oxalis corniculata Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17812 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC4056  Oxalis corniculata J. Wheeler 1967-5-20 29 Butte In lawn at 248 Serviss St. Durham. Comment
  CHSC75387  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 36 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CHSC9144  Oxalis rubra L. W. Gray 1970-5-1 28 Butte Collected at 710 W. 3rd street on lawn in front of house, Chico. Comment
  CHSC42642  Oxypolis occidentalis Vernon Oswald 1985-8-4 1925 Butte Slightly w of the Skyway 1.4 mi s of Inskeep. 1424 Comment
  CHSC42458  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC37106  Panicum capillare L. Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  UCD89498  Panicum capillare Beecher Crampton 1963-9-9 6883 Butte Honcut. Comment
  UCD89584  Panicum dichotomiflorum Beecher Crampton 1963-9-9 6885 Butte Honcut. Comment
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CHSC84032  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  JEPS98570  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 A Butte 5 mi(air)E of;in a meadow on bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  CHSC6146  Paspalum dilatatum E. Parreno 1968-5-4 82 Butte Lawn of 2nd house from corner of Flume St. and E 9th St., n side of e 9th, Chico. 59 Comment
  CHSC8571  Paspalum dilatatum M. MacArthur 1968-6-23 291 Butte Ca. 30 ft. SW of Big Chico Creek up slope by Esplanade bridge, Chico State College. 60 Comment
  CAS-BOT-BC259720  Paspalum distichum John Thomas Howell 1959-9-20 34666 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC43749  Pectiantia breweri Vernon Oswald 1987-6-29 3038 Butte Jones Meadow Rd. e of Inskip, 0.1 mi e of the intersection of the last section of road to Jones meadow. 1734 Comment
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  NY68337  Pedicularis groenlandica A. A. Heller 1928-7-10 14673 Butte At Butte Meadows in the yellow pine belt. Comment
  CHSC5977  Pelargonium graveolens M. MacArthur 1968-6-17 217 Butte Ca. 20 ft. SE Big Chico Creek along path between greenhouse and headhouse, Chico State College campus. 60 Comment
  CHSC96838  Pellaea andromedifolia Lowell Ahart 2007-5-29 13941 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  CHSC44615  Pellaea brachyptera Vernon Oswald 1984-7-2 1344 Butte 2.5 mi s-e of the junction of 26N27 and Humboldt Rd. n-e of Jonesville. 1767 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  UC382581  Pellaea mucronata var. mucronata Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  CHSC35217  Penstemon azureus var. azureus M. S. Taylor 1981-5-21 3774 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, in upper Concow Basin, ca. 20 mi n of Oroville. 853 Comment
  SEINET10547978  Penstemon deustus Mary Susan Taylor 1978-7-18 Taylor 1710 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC94061  Penstemon heterophyllus var. purdyi R. D. Fischer 2005-6-12 738 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at theeast end of Humboldt trailhead in Bidwell Park. Roadside collection. 407 Comment
  SEINET10548026  Penstemon laetus Mary Susan Taylor 1980-8-2 Taylor 3204 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  HSC66308  Penstemon laetus subsp. leptosepalus M. S. Taylor 1980-6-14 2878 Butte N side of Zink Rd., near entrance to Zink Ranch, 2 mi. E of Lake Madrone 762 Comment
  CHSC29802  Penstemon laetus var. leptosepalus M. S. Taylor; J. D. Jokerst 1980-6-14 2878 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  JEPS118483  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  NY604514  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-20 14666 Butte At Butte Meadows Comment
  POM21002  Penstemon laetus var. leptosepalus Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  RSA718790  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC600437  Penstemon laetus var. leptosepalus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks (Jonesville); , between Willow and Colby Creeks Comment
  NY604512  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14624 Butte Along the road 2 miles above the Ten Mile House, east of Chico. Comment
  CHSC31197  Penstemon neotericus M. S. Taylor; R. Schlising 1980-7-6 3078 A Butte On s side of Old Humboldt Rd., beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC49034  Penstemon neotericus Vernon Oswald 1984-7-5 1346 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of Hwy 32. 1380 Comment
  SEINET10548066  Penstemon neotericus Mary Susan Taylor 1978-7-21 Taylor 1800 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  SEINET10548098  Penstemon procerus subsp. formosus Mary Susan Taylor 1980-7-6 Taylor 3086 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  CAS-BOT-BC239445  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  CAS-BOT-BC239450  Penstemon rydbergii var. oreocharis H. F. Copeland 1920-8-12 126 Butte Beside Butte Creek 1676 Comment
  UCD137761  Pentagramma triangularis M. S. Taylor 1980-4-1 2425 Butte south side of Butte Creek, ca. 0.25 mile down stream from Honey Run Covered Bridge, ca. 6 miles east of Chico. 182 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40222  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1852 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC88068  Perideridia kelloggii R. D. Fischer 2004-6-6 154 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC40230  Perideridia lemmonii Vernon Oswald 1985-8-1 1919 Butte Jordan Hill Rd. between Concow Rd. and Magalia, 0.5 mi s of road to Sawmill Pk. 926 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  SEINET3924533  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte On the west side of Wickman Road, about 1 mile south of Richvale West road, about 1.5 miles (air) southwest of Richvale.; 0 29 Comment
  CAS-BOT-BC418949  Persicaria lapathifolia Lowell Ahart 1982-10-6 3844 Butte Along the edges of North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch 50 Comment
  JEPS127591  Persicaria pensylvanica B. Castro with Margie Graham and Stephanie Chun 2009-7-1 1798 Butte Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Road, off SE bank of Cherokee Canal 0.2 mi NE of southward bend in canal. Sanborn Slough 7.5' Quad. Comment
  CHSC110392  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC94488  Persicaria punctata Lowell Ahart 2006-8-29 13238 Butte West side of the gravel road, southwest of Parking Lot 17, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CHSC101117  Petrorhagia dubia Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC3836  Petrorhagia dubia L. E. Dunkel 1965-4-15 19 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge and ca. 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  SEINET207369  Petrorhagia dubia Rimo Bacigalupi, G. T. Robbins; F. Chisaki 1956-4-19 5615 Butte Along road from Oroville to Bangor, 5.3miles North of Bangor. 183 Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  SEINET12326938  Phacelia heterophylla Unknown 1980-1 18 Butte ca .75 mi E of Oroville Quincy Highway, 10 ft S of Lumpkin Rd 402 Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  POM181498  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville. 1524 Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC110226  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SEINET10658606  Phalaris caroliniana A. Arthur Heller 1902-5-3 Heller 5447 Butte Near Nelson Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  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
  UCD80589  Phalaris paradoxa CNPS SN Foothill Team 2005-5-5 SNFN 0156 Butte City of Chico, Upper Bidwell Park, off upper Bidwell Park Road on the N side of the road, about 0.75 miles E of Horseshoe Lake. 99 Comment
  CAS-BOT-BC77379  Philadelphus lewisii Clarence R. Quick 1952-7-1 52 -113 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  CHSC44459  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  CHSC93966  Phlox diffusa R. D. Fischer 2004-6-20 748 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  JEPS123873  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  POM75214  Phlox speciosa subsp. occidentalis C. C. Bruce 1898-05 2448 Butte Forest Ranch Comment
  JEPS82727  Phoradendron densum Wayne Roderick 1983-7-23 Butte near old R.R. station Magalia 762 Comment
  CHSC49450  Phyla nodiflora var. rosea Vernon Oswald 1987-6-5 2956 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glnn County because of shifting channel). 33 Comment
  RSA423763  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson. Comment
  CAS-BOT-BC140562  Physocarpus capitatus Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  JEPS94978  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  CHSC104831  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC28691  Pilularia americana M. S. Taylor 1979-5-6 2002 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET10530357  Pilularia americana Mary Susan Taylor 1978-5-7 Taylor 1605 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CHSC84863  Piperia elongata L. P. Janeway; John Hunt 2003-6-5 7808 Butte Northern Sierra Nevada Foothills. Top of low west-trending ridge into Lake Oroville 350 m west-southwest of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 296 Comment
  CHSC25253  Piperia transversa M. S. Taylor 1977-6-26 1388 Butte Ca. 2 mi. e of Cohasset. 762 Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CHSC69117  Piperia unalascensis Lowell Ahart 1997-8-1 7778 Butte Near some small streamlets of Little Kimshew Creek, in Smow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  SEINET10529823  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2319 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  SEINET10470433  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4241 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
  SEINET10529966  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-19 Taylor 2390 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC28964  Plagiobothrys austiniae J. D. Jokerst 1980-3-7 475 Butte Top of ridge ca. 100 m E of Hwy 32, 1/4 mi S of the NW corner of section 11. 396 Comment
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  UCD120768  Plagiobothrys austiniae Robert E. Preston 1990-3-11 594 Butte Chico, N end of Cactus Ave. 76 Comment
  SEINET10497374  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 Ahart 4886 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET12329563  Plagiobothrys glyptocarpus Unknown 1984-1 4590 Butte ca 0.5 mi N of Kunkle Reserv., along Kunkle Creek, ca 2 mi S of Paradise, E side of Pentz-Magalia Hy 600 Comment
  CHSC31257  Plagiobothrys greenei Don Kroessig 1979-4-18 1 Butte N. Butte Co. NW of Singer Cr. 60 Comment
  UCD80154  Plagiobothrys greenei CNPS SN Foothill Team 2005-4-13 SNFN 0080 a Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock. The plot is near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  UCR212286  Plagiobothrys greenei 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
  CAS-BOT-BC228256  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 s.n. Butte Jonesville 1500 Comment
  SD4241  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 Butte Jonesville. In brush near the head of South Willow Creek. 1700 Comment
  HSC32416  Plagiobothrys nothofulvus Kitsy Kelly 1974-4-20 30 Butte Table Mtn. Volcanic area Comment
  POM71486  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  JEPS106005  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  SEINET10497612  Plagiobothrys stipitatus Mary Susan Taylor 1978-4-14 Taylor 1566 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
  JEPS117200  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte West side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 396 Comment
  SEINET3449087  Plagiobothrys stipitatus var. micranthus Unknown 2003-5-28 10229 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain west of Cherokee Road, about 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence 270 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 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
  CHSC48343  Planodes virginica Vernon Oswald 1985-3-17 1685 Butte Peter Ahart Ranch ca. 1.5 mi n of Honcut. In pasture ca. 300 ft e of the home. 33 Comment
  JEPS122274  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC25538  Plantago coronopus Robert A. Schlisng 1974-4-24 3121 Butte Northernmost part of the county, near jct Hwy 99 and Broyles Road. Comment
  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
  UCD124395  Plantago coronopus Steven C. Joslin 1978-4-18 2 Butte ca. 11 miles north of Chico on Highway 99 at intersection with Broyles Road. 60 Comment
  CHSC111355  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC24971  Plantago elongata T. F. Burnham 1976-4-20 11 Butte 50 ft s of Cana Pine Creek Road, at the intersection of 99 and Cana Pine Creek Road. 97 Comment
  JEPS22686  Plantago elongata Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-25 6324 -A Butte 1.25 mi s Wicks Corner (along road from Chico to Oroville) 94 Comment
  RSA715920  Plantago erecta L. P. Janeway 2005-3-10 8343 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  UCD72996  Plantago erecta 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
  RSA756695  Plantago erecta Barbara J. Ertter, Linda Vorobik 1986-4-13 5881 Butte NE arm of Lake Mendocino NE of Ukiah. North side of Highway 20. 366 Comment
  JEPS115531  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  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
  CHSC32583  Plantago major var. scopulorum L. Ahart 1976-9-21 1199 Butte Along the edge of the rd 1/8 mi e of Golden Trout Crossing, ca 3 mi w of the Sly Creek Reservoir, the crossing is a bridge across from the South Fork of the Feather River. 762 Comment
  CHSC78157  Plantago virginica Lowell Ahart 2000-5-17 8366 Butte On the southeast margin of the Thermalito Afterbay, west of the poor dirt road, south of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. 42 Comment
  SEINET10470058  Platanthera dilatata var. leucostachys Mary Susan Taylor 1978-1 Butte Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  RSA325024  Plectritis californica L. Ahart 1984-4-3 4538 Butte Along N Honcut Creek, 1 mile N and 2.7 miles E of Honcut, Peter Ahart Ranch. Foothill Woodland. 50 Comment
  HSC92454  Plectritis ciliosa L. Ahart 1974-4-11 378 Butte North Honcut Creek, Peter Ahart Ranch, 1.25 mi. N and 3 mi. E of Honcut, 12 mi. S of Oroville. 46 Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  CAS-BOT-BC458152  Pleuricospora fimbriolata C. C., Mrs. Bruce 1898-1-1 1217 Butte Colby place Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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Mar 7 2011
  CHSC60705  Poa annua Vernon H. Oswald 1993-4-3 5248 Butte 1007 Lori Dr., in northwest Chico. In garden. 53 Comment
  CHSC65692  Poa annua Vernon H. Oswald 1996-3-22 7251 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, N end of levee between Tracts 6 and 7.1. On the levee road. 33 Comment
  UCD80594  Poa annua CNPS SN Foothill Team 2005-3-31 SNFN 0073 d Butte CDFG North Table Mountain Wildlife Area, North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  CHSC51377  Poa compressa Vernon Oswald 1990-9-11 4447 Butte Pond located ca. 1 mile south of Brush Creek. On a path on the south side of the pond. 990 Comment
  CHSC74172  Poa compressa B. Castro 1998-7-8 807 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. Near edges of meadow. 929 Comment
  CHSC102820  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CAS-BOT-BC255975  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte North Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 3 mi. E of Honcut, Sierra Nevada 50 Comment
  CHSC4373  Poa pratensis M. M. Gregg 1966-4-25 94 Butte Between Ed-Psy. Building and the Life Science Building, in a vacant lot, on CSC campus, Chico. Comment
  CHSC8574  Poa pratensis J. G. Moore 1969-4-21 23 Butte Next to sidewalk on 11th St. 20 yds. w of Oakdale St., Chico. 60 Comment
  RSA718081  Poa pratensis L. Ahart 2006-7-16 12973 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC88152  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CAS-BOT-BC236366  Poa secunda subsp. secunda L. W. Swift 1934-5-7 101 Butte Unspecified 731 Comment
  JEPS117705  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico 301 Comment
  CHSC107922  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  RSA0022186  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  SEINET12318337  Pogogyne zizyphoroides E. D. Osman 1978-1 18 Butte Ca 7.8mi N of Chico and 200' E of Cohasset Hwy. Richardson Springs Quadrangle, 7.5'. NE corner of * 76 Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC39676  Polygala cornuta Lowell Ahart 1983-6-21 4095 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC70809  Polygala cornuta var. cornuta B. Castro 1995-7-20 587 Butte Ca 2 air mi NW of Feather Falls, at western end of Watson Ridge, at W end of USFS Rd 21N25 along trail. 1005 Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 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
  CHSC100501  Polygonum aviculare Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC62156  Polygonum bidwelliae B. Castro 1987-5-18 98 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On flat lava outcrop surfaces and edges. 435 Comment
  UC85635  Polygonum bidwelliae Mrs. Bidwell May 1884 Butte Chico Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 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
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  CHSC38615  Polygonum californicum Vernon Oswald 1982-11-6 9 Butte Bidwell Park, Chico. 100 ft n of Upper Park Rd. 3.3 mi e of its junction with Wildwood Ave. Growing in gravel of abandoned roadbed in foothill woodland. 158 Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 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
  UC478528  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  POM280377  Polygonum kelloggii Lyman Benson 1932-7-28 3975 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA795242  Polygonum lapathifolium L. Ahart 2011-8-17 17628 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CAS-BOT-BC414716  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  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
  SEINET10530410  Polypodium californicum Mary Susan Taylor 1980-3-8 Taylor 2373 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10966165  Polypodium californicum Mary Susan Taylor 1979-9-28 Taylor 2191 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC103672  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 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
  CHSC28514  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2270 Butte Near creek on Jordan Hill Rd (Ponderosa Way on some maps) ca. 10.7 mi n of its jct with Concow Rd, ca. 1.5 mi n of Sawmill Peak, ca. 2 mi e of Magalia. 853 Comment
  CHSC42399  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC233053  Polypogon interruptus Lowell Ahart 1987-5-27 5699 Butte On sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SACT002116  Polypogon lutosus Herbert Copeland 1923/07/00 Butte Comment
  SEINET10530118  Polystichum imbricans Mary Susan Taylor 1980-5-27 Taylor 2668 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
  CAS-BOT-BC72266  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River 929 Comment
  RSA754818  Polystichum imbricans subsp. curtum L. Ahart 2009-6-30 15971 Butte E bank of Big Chico Creek, on W side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CAS-BOT-BC72298  Polystichum imbricans subsp. imbricans M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock Tunnel 487 Comment
  CHSC113580  Polystichum imbricans subsp. imbricans Lowell Ahart 2014-8-24 19722 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC28380  Polystichum kruckebergii Robert A. Schlising; Marc P. Hayes 1978-6-24 3292 Butte Extreme NW Butte County, just below summit of Humboldt Peak above Jonesville. 2133 Comment
  UCD138221  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  CAS-BOT-BC452108  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  SEINET8472199 Image available Potamogeton foliosus subsp. foliosus N. E. Brown, Charles C. Deam 1896-11-15 Butte Near Clear Creek Comment
  SD2231  Potentilla andersonii E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  SEINET7073611  Potentilla glandulosa A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC38645  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-11 472 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CHSC75531  Potentilla glandulosa subsp. glandulosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada. Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 710 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC28731  Proboscidea louisianica M. Banchero; R. Schlising, R. Banchero 1979-9-23 45 Butte SW of Chico, along Ord Ferry Road, 3.7 mi W of jct Ord Ferry and Goodspeed--Watt Roads (= Dayton Four Corners). Comment
  CHSC31789  Prunella vulgaris var. lanceolata L. Ahart 1977-6-3 1407 Butte Peter Ahart Ranch, Honcut. Along edges of North Honcut Creek. 50 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville 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
  CHSC110112  Prunus cerasifera L. P. Janeway 2012-5-2 10818 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. Next to the road. 62 Comment
  CAS-BOT-BC159921  Prunus emarginata A. A. Heller 1928-6-28 14618 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC35628  Pseudobahia heermannii R. E. Preston 1982-2-21 176 Butte N side of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 274 Comment
  CHSC408  Pseudobahia heermannii B. Richardson 1925-3-25 Butte Centerville road. 91 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  SEINET10475242  Pseudobahia heermannii Mary Susan Taylor 1980-4-1 Taylor 2423 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  CAS-BOT-BC357238  Pseudognaphalium microcephalum J. D. Jokerst 1979-10-5 0364 Butte Along edge of Hwy 70. Hwy 70 at intersection with Bear Ranch Cr., ca. 3/4 mi. S. of Arch Rock Tunnel 548 Comment
  CHSC38351  Pseudognaphalium stramineum Vernon Oswald 1983-5-27 560 Butte Upper Bidwell Park, Chico, 200 ft n of Upper Park Rd. at Diversion Dam. 121 Comment
  CHSC25290  Pseudognaphalium thermale M. S. Taylor 1977-7-15 1419 Butte Along w branch of Feather River ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CHSC103937  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-22 16723 A Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 387 Comment
  CHSC29289  Psilocarphus oregonus R. A. Schlising 1980-4-23 3574 Butte Between Singer Creek and Cana-Pine Creek Road (Wurlitzer Ranch). 54 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
  CAS-BOT-BC361917  Psilocarphus tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows 1600 Comment
  CHSC29709  Pterostegia drymarioides J. D. Jokerst 1980-4-21 626 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  CHSC108767  Pyracantha koidzumii L. P. Janeway 2011-6-1 10354 Butte Sacramento Valley. North side of the levee on the south side of the Feather River just northwest of Centennial Park, Oroville. Old gravel bar along south side of the river, just above the water line. 41 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  CHSC54527  Pyrola asarifolia subsp. asarifolia Vernon H. Oswald; Lowell Ahart 1991-8-19 4835 Butte Marshy meadow and lake on the north side of Forest Rd 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  CDA13272  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-9 13120 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  JEPS119898  Pyrus communis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 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
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt 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
  CHSC102405  Quercus kelloggii Lowell Ahart 2009-6-19 15952 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC48385  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  CAS-BOT-BC104689  Quercus wislizeni A. A. Heller 1913-4-6 10716 Butte Hills near Big Chico creek, E of Chico Comment
  CDA19813  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  CAS-BOT-BC186694  Ranunculus John Thomas Howell 1976-4-2 51549 Butte About 2 miles southeast of Chico 60 Comment
  CHSC48697  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-2 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  CHSC33971  Ranunculus aquatilis var. capillaceus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte In and along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  SEINET12089319  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft. e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run 146 Comment
  POM150698  Ranunculus canus A. A. Heller, H. E. Brown 1902-5-3 5220 Butte Near Nelson. Comment
  SEINET8359672  Ranunculus canus A. Heller 1926-3-31 13916 Butte Nelson, 14 miles S of Chico. Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) Comment
  CHSC87438  Ranunculus hebecarpus R. D. Fischer 2004-3-31 102 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  RSA754961  Ranunculus muricatus L. Ahart 2009-5-15 15698 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  RSA636048  Ranunculus muricatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8124 Butte Table Mountain. Comment
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 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
  CHSC31209  Ranunculus occidentalis var. occidentalis M. S. Taylor 1980-4-1 2426 Butte On bluffs above Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  SEINET177458  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  SD1767  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville, in wet woods 1500 Comment
  CHSC46851  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC52695  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC10657  Raphanus raphanistrum Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET13946281 Image available Rhamnus californica A. A. Heller 1915-1 11869 Butte Chico-Centerville road 3 miles from Chico Comment
  CAS-BOT-BC59888  Rhamnus ilicifolia P. Monnet 1913-3-1 683 Butte Feather River Canyon. Oroville. Comment
  CAS-BOT-BC59923  Rhamnus ilicifolia Lewis S. Rose 1955-6-15 55104 Butte 6 mi. se. of Paradise on Pentz Road. 426 Comment
  HSC100722  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte Along Guardian Rock Trail, 5/8 (air) mi. SW of intersection of Ten Mile House Rd. and Hwy. 32, Upper Bidwell Park, 10 mi. NE of Chico. 386 Comment
  UC1121842  Rhamnus ilicifolia J. E. Sowder 1933-11-27 132 Butte near Hog Spring; Chico Quad. 243 Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  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
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  CHSC97536  Rhynchospora californica Vernon Oswald 1985-7-10 1895 Butte Upper Bidwell Park, Chico, ca. 200 ft south of Upper Park Rd. ca. 0.2 miles ne of Salmon Hole. 182 Comment
  CHSC31430  Rhynchospora capitellata L. Ahart 1980-7-20 2481 Butte Large bare granite rock, near Bean Creek Rd, on the s side of Little Bald Rock, ca. 15 mi ne of Oroville. 1100 Comment
  CAS-BOT-BC111924  Rhynchospora glomerata var. minor Lowell Ahart 1980-7-20 2481 Butte At Little Bald Rock. 1100 Comment
  SBBG28495  Ribes inerme E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  CHSC44938  Ribes nevadense J. Marr 1988-3-19 11 Butte S side of Concow Rd. 4 mi w from Hwy 70, 18 mi n of Oroville. 633 Comment
  RSA0022849  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Jonesville, near Butte Creek. 1550 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  JEPS119556  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17753 Butte On the south side of Ten Mile House Road, about 1/4 miles west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC36093  Ribes viscosissimum var. hallii R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4330 Butte NE part of county, N of Philbrook Res.; SE of Snow Mountain peak, on flanks of mountain. 2103 Comment
  CHSC48903  Ribes viscosissimum var. hallii Vernon Oswald 1987-6-9 2968 Butte Near the headwaters of Scotts John Creek, 3.3. mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CHSC3020  Robinia pseudoacacia Carl Pejsa 1958-4-19 102 Butte Bidwell Park Forestry Station. Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  CDA30179  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Sierra Nevada foothills; Chico; adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. Plants growing at southern end of reserve along Chico Canyon Road, on the roadbed and the eastern edge. Population 1 to 1.25 miles north of Bidwell Park boundary. Comment
  CAS-BOT-BC74464  Rorippa curvisiliqua Lowell Ahart 1987-5-6 5512 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC74465  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6451 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  SEINET10483877  Rosa Mary Susan Taylor 1979-10-12 Taylor 2240 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  JEPS118337  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico 197 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  SEINET8359729  Rosa pisocarpa Unknown 2007-6-23 19074 Butte Black Bart Road 1.2 miles from lower junction with Forbestown Road, ca 10 air miles east-southeast of Oroville. 655 Comment
  CHSC102409  Rosa pisocarpa subsp. ahartii Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  JEPS98345  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  UCD149867  Rotala ramosior William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  SEINET10483581  Rubus leucodermis Mary Susan Taylor 1977-11-12 Taylor 1538 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  CHSC48875  Rubus ursinus Vernon Oswald 1987-4-6 2307 Butte Butte Creek Reservoir on the n side of Butte Creek e of the Skyway. 80 Comment
  CHSC28954  Rudbeckia hirta var. pulcherrima M. S. Taylor 1978-7-21 1831 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte county-Plumas county line. Comment
  UC1562345  Rudbeckia occidentalis Vernon Oswald and Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi N of Concow. 1097 Comment
  CHSC99475  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS124034  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC421909  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  JEPS115372  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles no 232 Comment
  SEINET11930159  Rumex conglomeratus Unknown 1982-1 3635 Butte Ahart Ranch, about 2 1/4 mi N and 1/4 mi E of Honcut, about 12 mi S of Oroville 37 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
  CHSC38625  Rumex crispus Vernon Oswald 1983-6-2 613 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  JEPS127063  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CAS-BOT-BC421619  Rumex crispus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CAS-BOT-BC433780  Rumex pulcher Lowell Ahart; John Thomas Howell; Gordon H. True 1974-5-3 50335 Butte Honcut Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  CHSC58271  Rumex salicifolius var. triangulivalvis Lowell Ahart 1992-5-9 6768 Butte On the bottom of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  UCD77982  Rupertia hallii Robert E. Preston 2003-7-17 2161 Butte Ca. 1 mi SW of Butte Meadows, along both sides of The Skyway 1447 Comment
  JEPS127102  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC48261  Sagina saginoides Vernon Oswald 1987-5-12 2393 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. On the edge of Butte Creek. 80 Comment
  SEINET260325  Sagittaria greggii C. Wick 1988-6-17 sn Butte S of Grainland Rd W of Agua Fria Rd (Goodspeed Watt) Rd S of Dayton 40 Comment
  UCD150366  Sagittaria montevidensis subsp. calycina William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CAS-BOT-BC267091  Sagittaria sanfordii Lowell Ahart 1987-10-22 5920 Butte In shallow water in Madrone Lake, near the Oroville Quincy Highway 609 Comment
  JEPS102545  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  CHSC108851  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  LA208842  Salix ligulifolia E. B. Copeland; 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  CHSC7049  Salvia sonomensis S. Armantrout 1969-5-1 8 Butte Cohasset hwy. 3 mi. n of Cohasset, off road. Comment
  UC104508  Salvia sonomensis Mrs. Austin Jun 1896 213 Butte Forest Ranch Comment
  CAS-BOT-BC238622  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte 8 miles north of Oroville Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC45733  Sanicula bipinnata J. S. Peterich 1988-3-8 7 Butte On Cohassset rd. ca. 70 m. w. of entrance to Richardson Springs, Chico. 90 Comment
  CHSC31412  Sanicula bipinnatifida Howard Paul 1980-4-23 11 Butte Along the s rim of Chico Creek canyon, ca. .2 mi n of Highway 32, 6.2 mi e of Chico. 259 Comment
  CHSC4089  Sanicula bipinnatifida L. R. Alexander 1967-4-9 7 Butte Found 4.5 mi. from Chico on the Paradise road ca. 250 yds. off the left hand side of the road. 182 Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC99582  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9385 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  UCD127991  Sanicula crassicaulis Robert Kehlor 1951-5-6 47 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC73731  Sanicula graveolens B. Castro 1997-6-30 725 Butte Ca. 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On N edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Quincy hwy, at base of road cut. 1066 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  SEINET10454590  Sanicula tuberosa Mary Susan Taylor 1981-3-31 Taylor 3461 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1594563  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  UC398919  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  POM92858  Saxifraga oregana C. C. Bruce 1898-03 2043 Butte [no locality information] Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CAS-BOT-BC111652  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge, 1/4 mi south of Skyway, 170 Comment
  CHSC31691  Schoenoplectus mucronatus L. Ahart 1972-7-5 133 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43291  Schoenoplectus tabernaemontani Lowell Ahart 1987-9-24 5898 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA13835  Scirpus mucronatus G. F. Hrusa, T. D. Wilfred 1996-9-5 13563 Butte Butte Basin; Adjacent to Durnel Road north of Nelson Rd. Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 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
  CHSC35035  Scleranthus annuus subsp. annuus R. A. Schlising 1981-4-11 4024 Butte Along Hwy 32 S of Forest Ranch. Immediate roadside. Comment
  CAS-BOT-BC239962  Scribneria bolanderi Lowell Ahart 1985-5-15 4971 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  CHSC44140  Scutellaria siphocampyloides Vernon Oswald 1988-8-3 3660 Butte North side of Humboldt Rd. ca. 0.1 mi w of its intersection with Scout Rd. in Butte Meadows. 1325 Comment
  SEINET10499232  Scutellaria tuberosa Mary Susan Taylor 1980-5-8 Taylor 2591 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  CHSC3952  Sedella pumila E. P. Parreno 1967-4-3 Butte Tabletop Mt. Comment
  SBBG70348  Sedella pumila H. L. Mason 1941-4-6 12409 Butte 3 mi S of Chico near jct of rd to Paradise 91 Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  CHSC42124  Sedum spathulifolium Lowell Ahart 1980-5-29 2358 Butte South of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  RSA0081478  Sedum spathulifolium C. C. Bruce 1897-05 1778 Butte Butte Creek. Comment
  SEINET12215938  Sedum spathulifolium Unknown 1972-1 7 Butte P.G.& E. stop, ca 1/2 mi N of Bear Creek where it flows into the N fork of the Feather River 183 Comment
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  JEPS113219  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  CAS-BOT-BC62123  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Chico quad, along small rd off Stillson Canyon Rd (leading to Mannion Property), ca. 3 mi sse of Chico 152 Comment
  HSC78628  Selaginella wallacei L. P. Janeway 1984-10-8 1181 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CHSC36520  Senecio integerrimus var. major L. Ahart 1982-5-8 3410 Butte Ca. 1/2 mi sw of the Forbestown Reservoir. 800 Comment
  CHSC109666  Senecio sylvaticus Lowell Ahart; S. Bazell, J. Guardino, W. Dempsey, J. Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM219171  Senecio triangularis H. F. Copeland 1928-8-17 251 Butte Jonesville. Comment
  CDA34164  Senecio vulgaris L. Ahart 2009-4-17 15539 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC101994  Senecio vulgaris J. M. Lund 1980-2-21 18 Butte Southwest corner of Esplanade and East Ave. approximately 200 ft west of the intersection within city limits. 76 Comment
  CHSC34697  Senecio vulgaris M. S. Taylor 1981-5-1 3580 Butte E side of Hwy 70, ca. 4 mi nw of Oroville. 91 Comment
  CHSC4002  Senecio vulgaris L. R. Alexander 1967-3-20 9 Butte Chico. Found at Almond Grove Trailor Park 567 E. Lassen Ave. Space 506. 59 Comment
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  UC128826  Sericocarpus oregonensis subsp. californicus Miss Kate Conger 1907-1-1 151 Butte Brush Creek Comment
  CDA32075  Sesbania punicea C. Owens 2010-9-23 s.n. Butte Chico; 10 meters downstream of River Road in Shady Oak Slough (which connects to Little Chico Creek). 0 Comment
  JEPS98698  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC243561  Setaria parviflora Lowell Ahart 1987-9-24 5899 Butte Along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 Comment
  CAS-BOT-BC240122  Setaria pumila John Thomas Howell 1959-9-20 34680 Butte Eastern outskirts of Oroville 60 Comment
  SEINET10609527  Setaria pumila Roland McKee 1918-8-12 McKee s.n. Butte Weed in alfalfa plots, Plant Industry Station, Chico. Comment
  CHSC40642  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte On the sides of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC35326  Sidalcea asprella M. S. Taylor; R. A. Schlising, K. Tharp 1982-4-8 4283 Butte At the end of Beckwith Rd. just above Oroville Dam Overlook parking area, Oroville. 320 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
  CHSC76947  Sidalcea diploscypha Margie Collins 1894-5-1 Butte Nord. Comment
  CHSC34952  Sidalcea gigantea R. A. Schlising; C. A. Lawler 1981-8-8 4190 Butte Near N end of Concow Reservoir. Comment
  POM253293  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte Upper end of Sang Lake, east of Chaparral, east of a meadow 1524 Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 Comment
  CHSC90253  Sidalcea hartwegii Eric M. Haney 1989-4-21 8 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  HSC23513  Sidalcea hartwegii J. Moore 1969-5-5 145 Butte Hwy. 70, 3 mi. S of Oroville Comment
  JEPS93900  Sidalcea hartwegii Lowell Ahart 1998-6-9 7992 Butte about 7 air mi n of Oroville (about 300 yards w of the Ione oak tree, w of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SFV2294  Sidalcea hartwegii M. L. Vincent 1962-4-17 199 A Butte Sierra Nevada 4 miles south of Paradise at Kunkel Reservoir. 450 Comment
  POM84282  Sidalcea hartwegii C. C. Bruce 1897-05 1873 Butte Forest- Ranch. Comment
  POM84284  Sidalcea hartwegii C. C. Bruce 1897-05 1922 Butte [No location information on label.] Comment
  SEINET10937541  Sidalcea hartwegii Mary Susan Taylor 1980-4-27 Taylor 2570 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
  SEINET11991675  Sidalcea hartwegii M. A. Pella 1984-1 20 Butte ca 20 yds N of Cohasset Stage Rd 244 Comment
  CHSC71183  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC44634  Sidalcea oregana subsp. spicata Lowell Ahart 1988-6-21 6049 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jargo Gap. 271 Comment
  CHSC28789  Sidalcea robusta J. D. Prouty 1979-5-23 7905231 Butte Along the s cliffs of Butte Creek Canyon, 900' n of the Skyway, ca. 4 mi e of Chico. 164 Comment
  CHSC35044  Silene antirrhina R. A. Schlising 1980-6-10 4112 Butte Along Humboldt Road, 1.9 mi NE of its jct with Hwy 32 at Lomo. On Carpenter Ridge. 1356 Comment
  CAS-BOT-BC389007  Silene laciniata subsp. californica Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC389010  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CAS-BOT-BC389015  Silene laciniata subsp. californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC37282  Silene latifolia subsp. alba M. S. Taylor 1982-6-24 4726 Butte E side of Flea Mt ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  RSA715709  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  LA204646  Silene occidentalis E. B. Copeland; 1930-7-28 635 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC34530  Sinapis arvensis R. E. Preston 1982-2-18 167 Butte N side of Keefer Lane ca. 0.4 mi w of Cohasset Hwy; ca. 6 mi n of downtown Chico. In stock pen. 106 Comment
  CHSC481  Sinapis arvensis M. Goin 1933-3-17 Butte Field near Chico. 57 Comment
  CAS-BOT-BC74932  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC35024  Sisymbrium officinale R. E. Preston 1982-3-27 205 Butte Along dirt road; Campbell Hills, n of Thermalito Afterbay, Oroville. In saddle. 121 Comment
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 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
  UC1134656  Smilacina racemosa P. L. Johannsen 1936-7-17 946 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  POM109243  Smilax californica Mrs. R. M. Austin 1883-05 31 Butte Lomo. Comment
  UC119624  Smilax californica Mrs. R. M. Austin April 1883 284 Butte Big Chico Comment
  CHSC111145  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC112743  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  JEPS95877  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte about 2 miles north and 1/4 mile east of Honcut; Peter Ahart Ranch, Oroville; Peter Ahart Ranch; about 2 miles north and 1/4 mile east of Honcut; about 12 miles south of Oroville 30 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  SEINET10546687  Solanum parishii Mary Susan Taylor 1981-5-22 Taylor 3797 Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  SEINET10546692  Solanum umbelliferum Mary Susan Taylor 1984-4-6 Taylor 5413 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS110090  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows 1516 Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  UCD136103  Soliva sessilis H. Clem Meith 1961-4-4 s.n. Butte Oroville. Comment
  CDA42842  Sonchus oleraceus L. Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  CHSC115178  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte Gravel bar on the south side of the dry stream, about 20 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
  CHSC424  Sonchus oleraceus J. Turner 1930-5-14 Butte Chico Creek road. 76 Comment
  CHSC8560  Sonchus oleraceus M. MacArthur 1968-6-12 165 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science bld., Chico State College campus. 60 Comment
  CHSC31658  Sonchus tenerrimus L. Ahart 1974-6-3 474 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10594682  Sorghum halepense Prouty 1980-1 PROUTY 80 .97 Butte Along Cherokee Rd., ca. 0.8 mi n of jctn. with Thompson Flat Rd. Comment
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC101749  Spartium junceum Lowell Ahart 2009-5-23 15743 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  SEINET7420479  Spartium junceum M. J. Williams, W. Roderick 1984-5-25 84- 22 -2 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  JEPS114737  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC225  Spergularia bocconi V. Holt 1935-4-24 Butte Roadside near Plant Gardens. 60 Comment
  RSA0118768  Spergularia bocconi Lowell A. Ahart 2013-4-20 18563 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  CHSC98983  Spergularia rubra Lowell Ahart 2008-5-8 14712 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
  CAS-BOT-BC390596  Spergularia rubra Clarence R. Quick 1963-7-16 63 53 a Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CAS-BOT-BC147949  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  SEINET10483626  Spiraea douglasii Lowell Ahart 1983-9-17 Ahart 4440 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  UC600632  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  UC1609424  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC42981  Stachys ajugoides var. rigida L. P. Janeway 1987-6-27 2352 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of road. 1554 Comment
  CDA41009  Stachys ajugoides var. rigida T. C. Fuller 1962-7-12 9192 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SBBG128189  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte drainage on the E side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  CHSC113251  Stebbinsoseris heterocarpa Lowell Ahart 2014-4-20 19389 Butte Near the bottom of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  JEPS121997  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC26467  Stellaria media P. Moyer 1972-3-4 113 Butte CSUC Campus. 2nd and Ivy to 2nd and Cherry. 60 Comment
  CHSC90186  Stellaria media Robert Kissane 1989-4-18 7 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  JEPS113137  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  RSA754998  Stellaria media L. Ahart 2008-5-12 14752 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  CAS-BOT-BC395111  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  SEINET10833473  Stellaria nitens Lowell Ahart 1983-3-28 Ahart 3907 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  SEINET12558144 Image available Stellaria nitens Lowell Ahart 1983-1 3907 Butte about 1/2 mile southwest of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown, California 450 Comment
  JEPS109818  Stellaria obtusa Dean W. Taylor 2004-7-21 19201 Butte Coon Hollow, upper reaches thereof ca. 0.3 miles above the creek crossing of Forest Road 26N74 (High Lakes Road), watershed West Branch Feather River 1706 Comment
  POM219119  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  CAS-BOT-BC405342  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC43197  Stephanomeria lactucina Robert Banchero 1981-6-29 544 Butte 1.7 air mi w of Pulga. 926 Comment
  CHSC61633  Stephanomeria lactucina Lowell Ahart 1993-9-8 7173 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  SEINET10474963  Stephanomeria lactucina Lowell Ahart 1983-8-16 Ahart 4307 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  UC1609323  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam 1158 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CAS-BOT-BC61284  Streptanthus cordatus var. cordatus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Mountains. 1463 Comment
  CAS-BOT-BC61285  Streptanthus cordatus var. cordatus John Thomas Howell 1955-6-14 30467 Butte Near Magalia. 731 Comment
  JEPS94685  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC52007  Streptanthus polygaloides L. P. Janeway 1988-7-2 2969 Butte Near the road to French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  JEPS108792  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CHSC93504  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  UCD67369  Styrax redivivus Leslie Goldberg 1992-5-16 17 Butte Pulga, side of Road along north fork Feather River. Comment
  SEINET10465014  Symphoricarpos Mary Susan Taylor 1974-3-19 Taylor 83 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC11856  Symphoricarpos mollis E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  CHSC40561  Symphyotrichum chilense Lowell Ahart 1985-10-12 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CAS-BOT-BC98058  Symphyotrichum lentum John Thomas Howell 1959-9-20 34685 Butte eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  CAS-BOT-BC376773  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown 457 Comment
  CAS-BOT-BC376888  Taraxacum officinale Lowell Ahart 1979-4-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC87775  Tauschia hartwegii Paul Maslin 2004-4-22 28 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611524E 4411103N. Comment
  UCR7828  Taxus brevifolia Wm. Horn Jr. 1964-6-24 640624- 01 Butte 9 mi east of De Sabla 1159 Comment
  CAS-BOT-BC197422  Thinopyrum ponticum John Thomas Howell 1961-9-22 36785 Butte Pulga bridge, Feather River Highway Comment