Search Results — 2000 specimen records retrieved (1601 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] 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
  UC600815  Acer glabrum var. glabrum H. F. Copeland 1932-7-16 Butte ridge w of the summit Jonesville Comment
  POM193371  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville. 2100 Comment
  CAS-BOT-BC331606  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  SEINET12236469  Acer macrophyllum Unknown 1980-1 10 Butte 8 mi NNW of Lumpkin Rd on Craig access rd on W side of rd. 18 mi E of Oroville Comment
  CHSC6015  Acer rubrum M. MacArthur 1968-6-19 260 Butte ca. 50 ft. SW of Esplanade bridge, on NW edge of Big Chico Creek, Chico State College, Butte Co. 60 Comment
  CHSC3356  Acer truncatum Robert L. Smith 1966-4-6 57 Butte U. S. Plant Introduction Station 5 miles SE of Chico, Calif. Comment
  SEINET10473513  Achillea lanulosa Mary Susan Taylor 1975-8-31 Taylor 889 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 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
  CHSC42447  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 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
  JEPS110242  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  JEPS110266  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  UC392235  Achnatherum occidentale subsp. californicum E. B. Copeland July, 1929 Butte woods w Willow Creek; Jonesville, Willow Creek 1600 Comment
  CAS-BOT-BC218049  Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along road about 2 miles S of Inskip 1400 Comment
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  CHSC3192  Achyrachaena mollis Dona Kingsford 1966-4-23 Butte 6.9 miles SW of Hooker Oak Tree, Chico. Comment
  CHSC38316  Achyrachaena mollis Vernon Oswald 1983-4-20 354 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  CAS-BOT-BC29950  Achyrachaena mollis Lowell Ahart 1980-5-4 2154 Butte near Thermalito 19 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC94785  Acmispon americanus var. americanus Lowell Ahart 2006-10-8 13441 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
  CHSC96998  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-19 9065 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  CHSC876  Acmispon brachycarpus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  CHSC90393  Acmispon parviflorus Richard A. Nichols 1980-4-19 9 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  CHSC44395  Acmispon strigosus Lowell Ahart 1988-7-3 6116 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CHSC49841  Acmispon strigosus Vernon H. Oswald 1990-4-2 4141 Butte East side of Feather River in Oroville, Montgomery St access. Occasional on river-washed dredge tailings near the river directly w of Montgomery St. 42 Comment
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 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
  UCD104482  Acmispon wrangelianus Rimo Bacigalupi; L. R. Heckard 1963-5-14 8857 Butte Along Humbug Road, bottom of Butte Creek Canyon, about 2 miles above and east of its beginning at junction with Paradise Skyway. 91 Comment
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC391377  Aconitum columbianum subsp. columbianum H. F. Copeland 1920-8-12 127 Butte Beside Butte Creek 1676 Comment
  CHSC52677  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-5 323 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek, near stream. 1487 Comment
  HSC66268  Aconogonon davisiae M. S. Taylor 1979-6-21 2156 Butte W side of Humboldt Peak, Humboldt Summit 2155 Comment
  CAS-BOT-BC391597  Actaea rubra Lowell Ahart 1981-9-21 3194 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  CAS-BOT-BC29852  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC29924  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC41299  Adenocaulon bicolor S. C. Morey 1983-7-22 552 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC84627  Adiantum aleuticum Matt Quinn 2001-4-23 52 Butte Found growing along bedrock wall on south side of Honey Run Creek, approximately 3/4 mile upstream of confluence with Little Butte Creek. 243 Comment
  SEINET10529974  Adiantum aleuticum Mary Susan Taylor 1976-5-5 Taylor 1117 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC3630  Adiantum capillus-veneris John Francis 1966-2-28 56 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC21827  Adiantum jordanii B. L. Wiley 1975-4-4 5 Butte Ca. 100 yds s of Butte Creek and 0.4 mi w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  RSA616277  Aesculus californica B. J. Cox, Jeff Huber 1971-6-10 2853 Butte 8 mi. E. of Red Bluff, on Calif. Hwy. 36; live oak, savannah, & Aesculus. 152 Comment
Read comments Dec 20 2012
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC31934  Ageratina occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1038 Butte Top of Humboldt Peak, ca. 200 met N of summit, northern most portion of Butte Co. 2133 Comment
  CHSC45667  Ageratina occidentalis Vernon Oswald 1987-7-16 3124 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CAS-BOT-BC29614  Agoseris grandiflora var. grandiflora Helen M. Edwards 1917-6-16 s.n. Butte De Sabla Comment
  CHSC29301  Agoseris retrorsa J. D. Prouty 1980-4-17 80 .69 Butte E of Yankee Hill Road. 518 Comment
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  UC600721  Agoseris retrorsa E. B. Copeland 1931-7-12 Butte (Ridge between Jones and Willow Creeks) Jonesville 1700 Comment
  UCD146247  Agoseris retrorsa Daniel S. Park; D. Potter 2010-4-10 16 Butte Table Mt. Downhill trail across from waterfall. Growing on slope. 314 Comment
  POM33405  Agoseris retrorsa C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  SEINET10475111  Agoseris retrorsa Mary Susan Taylor 1981-5-21 Taylor 3771 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  UCD128658  Agoseris retrorsa A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. Comment
  CHSC112689  Agrimonia gryposepala Lowell Ahart 2013-7-1 18815 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SEINET10964049  Agropyron elongatum Lowell Ahart 1982-7-10 Ahart 3678 Butte On dry soil near dirt Rd, ca. 1/4 mile NE of HQ, Graylodge Wildlife Refuge, ca. 12 miles SW of Gridley. 35 Comment
  CHSC41978  Agrostis avenacea Lowell Ahart 1986-11-14 5468 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC49703  Agrostis avenacea Vernon Oswald 1985-5-20 1775 Butte Between the north edge of Hwy 162 and Thermalito Afterbay ca. 1 mi e of Hwy 99. 35 Comment
  UCD169895  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte On the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  UCD52309  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near Peter Ahart Ranch, 3 miles NE of Honcut. 50 Comment
  SEINET10507085  Agrostis exigua Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4166 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 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
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CDA34632  Agrostis pallens L. Ahart 2009-6-19 15929 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10901700  Agrostis stolonifera Mary Susan Taylor 1978-7-18 Taylor 1676 Butte On W side of Hwy 32 on edge of Yellow Pine Forest in dry open area, 1/4 mi N of Forest Ranch. 718 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC8193  Aira caryophyllea B. Hamilton 1969-3-21 8 Butte Found in Humboldt Rd and Flume Street near creek. Comment
  CAS-BOT-BC138410  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-17 2289 Butte 0.5 mile southeast of Hurleton. 600 Comment
  SEINET10507134  Aira elegans Mary Susan Taylor 1980-4-6 Taylor 2442 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC31016  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  SEINET8466775 Image available Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy #70, 4.4 miles south of the Oroville Dam Exit (Hwy. #126) Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte Near Clear Creek Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  CHSC62600  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca. 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84. 944 Comment
  CHSC62601  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca. 2.5 mi S of Big Bar Mtn, on SSE-facing slope 800 ft along both sides of USFS rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  JEPS109801  Allium jepsonii Dean W. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  SEINET194958  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte Along Feather River Hwy E side of Jarboe Pass 22 mi from Oroville 610 Comment
  JEPS97586  Allium peninsulare R. D. Stone and W. B. Davilla 1984-4-20 591 Butte Canyon of North Fork Feather River Pulga (above intersection of CA Hwy. 70 and Camp Creek (Pulga) RD.; ca. 0.75 mi SSW of) 487 Comment
  CHSC36912  Allium sanbornii var. sanbornii R. A. Schlising 1981-7-24 4166 Butte NW part of county near Lomo (several miles NE of jct Hwy 32 and Humboldt Road to Butte Meadows). 1341 Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CHSC23633  Alnus incana subsp. tenuifolia M. S. Taylor 1976-4-4 1050 Butte On Ernies Island, ca. 50 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows, on Butte Creek. 1706 Comment
  UC1076425  Alnus rhombifolia Herbert L. Mason 1927-5-19 3716 Butte Cherokee mine Table Mt. (ne of Oroville) Comment
  CAS-BOT-BC138039  Alopecurus carolinianus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35649  Alopecurus carolinianus R. E. Preston 1982-4-7 233 Butte On banks of irrigation ditch which crosses Biggs-Princeton Hwy ca. 2.4 mi w of Biggs. 24 Comment
  RSA0115343  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Lunch [Launch?] Area about 10 1/2 miles (air) northeast of Oroville. 217 Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CHSC39627  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC90812  Alyssum desertorum Lowell Ahart 2005-5-2 11763 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC102990  Amaranthus albus Lowell Ahart 2009-8-13 16273 Butte In the channel about about 100 yards east of the diversion structure that controls Mud Creek and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  CHSC83056  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97133  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
  CHSC116132  Amaranthus californicus Lowell Ahart 2015-11-7 20616 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
  CHSC51344  Amaranthus californicus Vernon Oswald 1990-8-14 4431 Butte West Branch of Lake Oroville, Vinon Gulch access, 0.5 mi north of Cherokee. Occasional on and along the track below the lower end of the paved launching ramp. 259 Comment
  SEINET10478807  Amaranthus graecizans Mary Susan Taylor 1977-8-16 Taylor 1442 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 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
  UC1609225  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road) 48 Comment
  SBBG128776  Amaranthus palmeri L. Ahart 2013-10-16 19111 Butte W side of Hwy 99E, ca. 20 yards S of B St, ca. one mi E of Biggs 30 Comment
  CHSC43584  Amaranthus rudis Vernon Oswald 1987-6-12 2990 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  UC179502  Ambrosia psilostachya A. A. Heller 1914-9-3 11759 Butte 6 mi from, on the Chico-Hamilton road Chico Comment
  CAS-BOT-BC142948  Amelanchier utahensis H. F. Copeland 1920-8-29 159 Butte Jonesville Woods 1219 Comment
  JEPS98972  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  UCD119626  Amsinckia intermedia R. R. Kehlor 1951-4-14 29 Butte Sierra Nevada, 6.25 miles E of Oroville - Mt. Ida Road. 48 Comment
  CHSC109077  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 202 Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  UC726542  Amsinckia lycopsoides A. A. Heller 1942-4-5 16417 Butte 8 mi n Chico (1/2 mi e of junction of Cohasset road with U.S. 99E) Comment
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  HSC32578  Anagallis arvensis Linda M. Barker 1974-4-20 147 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  POM57372  Ancistrocarphus filagineus A. A. Heller, H. E. Brown 1902-5-12 s.n. Butte Grade between Clear Creek and Paradise. Comment
  SEINET10507169  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC46837  Anemone oregana Kirsten Tarp 1982-6-27 192 Butte S of Sly Creek Reservoir. 1097 Comment
  CHSC45871  Anethum graveolens Lowell Ahart 1979-9-8 2020 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC11879  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1650 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  CHSC90945  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  SEINET10873865  Anthriscus scandicina Mary Susan Taylor 1975-4-25 Taylor 497 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC117333  Antirrhinum vexillocalyculatum subsp. intermedium L. P. Janeway 2016-8-8 12142 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  POM305519  Antirrhinum vexillocalyculatum subsp. intermedium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 848 Butte Feather River Hwy. Comment
  CHSC28753  Aphanes occidentalis J. D. Jokerst 1979-3-18 172 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico, top of ridge. 365 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
  CHSC63971  Aphyllon epigalium subsp. epigalium B. Castro; G. Kuenster, L. Gehrung 1994-6-1 513 Butte Ca 1.5 air mi ENE of Feather Falls (the falls), ca 1 mi W of Jackson Ranch, on broad S-facing slopes S of jcn USFS Rd 21N25Y and another smaller dirt road. 1054 Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road 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
  RSA726810  Apocynum androsaemifolium L. Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  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
  CAS-BOT-BC392110  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  CHSC52457  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-16 207 Butte Crane Valley; streamlike on rocks, in opening of Fir Forest. 1560 Comment
  CHSC52680  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 302 Butte E part of county, ca. 1.0 mi NE of Mountain House. 1024 Comment
  CHSC52681  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-25 303 Butte E part of county, near Milsap Bar. 640 Comment
  CHSC52686  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 357 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1633 Comment
  POM366932  Aquilegia formosa var. truncata L. Ahart, P. Ahart 1984-6-10 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] 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
  SEINET10837606  Arceuthobium abietinum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  SEINET10969532  Arceuthobium campylopodum Mary Susan Taylor 1975-9-19 Taylor 911 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  RSA632986  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27448 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633008  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27455 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52236  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51561 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52255  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51542 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC109137  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  RSA178613  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico. Comment
  RSA31631  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal Road west of Paradise just below the Spring House. Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  RSA178607  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  CAS-BOT-BC38554  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-7-14 51817 Butte Just NE of Pulga Bridge. 417 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
  JEPS84879  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte Conteleve Road e Paradise 762 Comment
  CAS-BOT-BC45567  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge e. of the Summit. 2100 Comment
  CAS-BOT-BC45570  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  SBBG28835  Arctostaphylos nevadensis subsp. nevadensis E. B. Copeland 1930-7-6 Butte above Jonesville 2050 Comment
  RSA31744  Arctostaphylos patula A. A. Heller 1941-2-12 15875 Butte Along the Neal Road, a 1/2 mile West of Optimo Lodge. Comment
  CHSC67932  Arctostaphylos truei James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1683 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  UCD51935  Arctostaphylos truei John Thomas Howell 1975-6-15 51110 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  SEINET10874396  Arctostaphylos truei Mary Susan Taylor 1981-3-24 Taylor 3441 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
  SEINET11989220  Arctostaphylos truei J. T. Howell 1975-1 51094 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET10449336  Arctostaphylos viscida Mary Susan Taylor 1976-4-24 Taylor 1074 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  UC1174972  Arctostaphylos viscida subsp. viscida P. C. Everett and E. K. Balls 1959-10-20 23908 Butte Hwy 32 9.4 mi ne Chico (toward De Sabla) 792 Comment
  CDA31488  Aristida oligantha L. Ahart 2000-9-27 8692 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  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
  UCD137818  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 243 Comment
  SEINET10475905  Aristolochia californica Mary Susan Taylor 1981-3-16 Taylor 3407 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
  RSA123056  Arnica dealbata P. L. Johannsen 1936-7-16 928 Butte Bolt Creek. 1433 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC42852  Arrhenatherum elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC103160  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
  CHSC76398  Artemisia douglasiana Lowell Ahart; Vernon H. Oswald 1999-10-3 8292 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10872091  Artemisia douglasiana Mary Susan Taylor 1975-10-29 Taylor 976 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  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
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  UC127748  Asarum lemmonii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC878976  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC40364  Asclepias fascicularis Lowell Ahart 1985-6-30 5074 Butte Along the road at the intersection of Forbestown Road and Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC47067  Asclepias speciosa R. A. Schlising; P. Broyles 1988-7-9 4577 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC51850  Asclepias speciosa L. P. Janeway 1988-6-5 2728 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  SEINET10529843  Aspidotis californica Mary Susan Taylor 1976-4-24 Taylor 1073 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  CAS-BOT-BC99219  Aster M. S. Taylor 1977-11-12 1537 Butte By Big Chico Creek, at end of Upper Bidwell Park, ca. 10 mi e of Chico 304 Comment
  CAS-BOT-BC478052  Asteraceae Grace Kermode 1898-6-3 s.n. Butte Big Chico Creek Comment
  UCD80287  Astragalus gambelianus CNPS SN Foothill Team 2006-3-22 SNNR 1175 Butte CDPR Oroville State Recreation Area. 295 Comment
  SEINET10532283  Athyrium filix-femina Mary Susan Taylor 1978-7-19 Taylor 1737 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  CHSC19918  Athysanus pusillus M. S. Taylor 1975-3-3 398 Butte Ca 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards 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
  UCD114230  Athysanus pusillus L. Ahart 1973-3-7 159 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  UCD56132  Avena barbata P. B. Kennedy 1914-5-1 4752 Butte Grade to Paradise. Comment
  CHSC101295  Avena fatua Lowell Ahart 2009-4-17 15553 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC90835  Avena fatua Lowell Ahart 2005-4-14 11706 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  JEPS107374  Avena fatua Lowell Ahart 2005-4-14 11706 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley 28 Comment
  JEPS102322  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (E side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC113982  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 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
  SEINET10615075 Image available Balsamorhiza hookeri H. E. Brown 1897-5-1 Brown 208 Butte Collected near Clear Creek, Butte County. 53 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  CAS-BOT-BC75546  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CAS-BOT-BC102071  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte Chico, on Big Chico creek Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  SEINET11842156  Blennosperma nanum S. C. Joslin 1978-1 9 Butte ca 2 mi E of Chico on Humbug Rd, ca 3 mi W of intersection with Hwy 32 91 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 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. Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  CHSC33707  Boechera arcuata J. D. Jokerst 1981-5-21 1331 Butte Ca 1.0 mi NE of the town of Pulga. Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CAS-BOT-BC15808  Boechera arcuata Lowell Ahart 1978-4-19 s.n. Butte At Feather Falls. 650 Comment
  CHSC11926  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  SBBG128788  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte upper Bidwell Park, Chico, SE facing slope +/- overlooking Bear Hole on Big Chico Crk, between Middle Trail and Upper Trail 166 Comment
  JEPS102338  Brassica napus Lowell Ahart 2001-5-10 8739 Butte 4 air miles SW of Gridley (on sides of dirt rd E of the large pump, on S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC35009  Brassica rapa R. E. Preston 1982-3-2 181 Butte Old County Dump site, ne corner of jct of Humboldt Rd and Bruce Rd; ca. 3 mi e of downtown Chico. 86 Comment
  CDA5622  Briza minor L. Ahart 2005-4-14 11710 -A Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC101761  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, 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
  CHSC6716  Briza minor V. Hagaman 1968-4-19 479 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  CHSC82678  Briza minor Tara Morgan 2002-5-7 55 Butte It was located within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 546 Comment
  JEPS116080  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, 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
  SEINET201433  Brodiaea californica Rimo Bacigalupi, G. Bacigalupi; Heckard Sanderson 1952-6-20 3752 Butte Along road from Oroville to Forbestown 1.2 miles west of Hurleton 442 Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CHSC38764  Brodiaea californica var. californica Vernon Oswald 1983-5-9 460 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  POM253053  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte In fields near Chico Airport. Comment
  SEINET3884842  Brodiaea coronaria Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -8 Butte Magalia, near Skyline road to Paradise.; 0 168 Comment
  CHSC117441  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 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
  HSC31885  Brodiaea minor R. A. Vanbianchi 1974-4-20 217 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  RSA126000  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CHSC3529  Brodiaea nana John Francis 1966-5-7 156 Butte 4.2 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Comment
  CHSC40272  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC71461  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte On the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 54 Comment
  JEPS106106  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  RSA703217  Bromus catharticus L. Ahart 2004-8-20 11399 Butte On the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Grudley. In walnut orchard. 28 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  SEINET3923094  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; 0 700 Comment
  CHSC42847  Bromus madritensis subsp. 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 south-east of Jarbo Gap. 283 Comment
  CHSC46437  Bromus madritensis subsp. rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  JEPS73967  Bromus madritensis subsp. rubens G. P. Van Eseltine 1918-4-26 895 Butte Chico Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  SACT000625  Bromus orcuttianus Herbert Copeland 1930-7-21 Butte in woods by butte creek common, small clumps 1524.0 Comment
  CDA13897  Bromus sterilis G. F. Hrusa, T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC1609516  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC161501  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of Feather River near Stirling. Comment
  UCD60053  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  RSA4655  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC82504  Bulbostylis capillaris Lowell Ahart; John Dittes 2002-6-17 9720 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  JEPS122141  Bulbostylis capillaris Lowell Ahart 2014-5-2 19426 Butte About one mile (air) northwest of the improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 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
  CHSC23133  Calandrinia ciliata var. menziesii M. S. Taylor 1976-2-12 991 Butte Abundant along roadside, ca. 500 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 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
  CHSC38282  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-4-10 318 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC19926  Calocedrus decurrens M. S. Taylor 1975-2-16 387 Butte Along w side of Jordan Hill Rd, ca. 2 mi s of Concow reservoir, ca. 4 mi s of Paradise. Comment
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  UC565380  Calochortus albus Helen Hedges 1937-5-19 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  SEINET12046117  Calochortus albus Unknown 1978-1 12 Butte Butte Creek Canyon, 3.5 mi up from the Skyway, 300 yd in front of gaging station 122 Comment
  UC600460  Calochortus leichtlinii E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creek; Jonesville 1700 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  CAS-BOT-BC437678  Calochortus luteus Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  UCD139538  Calochortus luteus L. Ahart 1979-5-12 1875 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC492565  Calochortus minimus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 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
  CHSC32118  Calochortus monophyllus L. Ahart 1970-4-5 42 Butte Along Robinson Mill Rd. 457 Comment
  CHSC51942  Calochortus monophyllus John J. Copeland 1980-3-31 19 Butte 0.95 mi SE of Cohasset Rd, ca 5 mi E of Chico airport. Comment
  CHSC7087  Calochortus monophyllus F. Kimball 1969-4-15 42 Butte 1.5 mi s of Skyway on Foster Rd. 396 Comment
  CHSC90226  Calochortus monophyllus Eric M. Haney 1989-4-23 18 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  CHSC9277  Calochortus monophyllus D. C. Burns 1971-4-2 112 Butte Few plants on n side of Cohasset rd., ca. 1.3 mi w of intersection of Cohasset rd. and Vilas rd. 487 Comment
  SD669  Calochortus nuttallii E. B. Copeland 1929-7-17 352 Butte Above Jonesville, on bare or open stony outcrops and ridges. 2000 Comment
  CHSC76967  Calochortus tolmiei Margie Collins 1894-4-1 Butte Forbestown. Comment
  CAS-BOT-BC273288  Calycadenia fremontii G. D. Carr 1971-6-15 563 Butte NE of Chico, NW side of Devil's Kitchen, Upper Bidwell Park, about 0.4 mi SW of N boundary of park, (ca. 5.5 mi NE of Manzanita Ave on Upper Bidwell Park Rd via Wildwood Ave) 232 Comment
  CAS-BOT-BC106084  Calycadenia oppositifolia John Thomas Howell 1955-6-15 30509 Butte West Branch of North Fork of Feather River 182 Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 Comment
  CHSC23367  Calycadenia oppositifolia R. A. Schlising 1975-5-31 3161 Butte Bidwell Park on ridge above (N) of Golf course. Comment
  CHSC29833  Calycadenia oppositifolia M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2753 Butte Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 441 Comment
  CHSC91459  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  RSA788196  Calycadenia oppositifolia R. L. Carr 1977-7-6 2033 Butte Big Ridge Rd, 2.3 mi SE of jct with Oroville-Quincy Hwy, S of Berry Creek. 610 Comment
  RSA788204  Calycadenia oppositifolia R. L. Carr 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave, 100 yds NW of rd. 244 Comment
  UCD80040  Calycadenia oppositifolia CNPS SN Foothill Team 2005-5-4 SNFN 0201 e 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
  UCD135719  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile north of Broyles Road. Comment
  CAS-BOT-BC270885  Calycadenia spicata John Thomas Howell 1962-6-15 37421 Butte 5 miles W of Oroville Comment
  UC913063  Calycadenia truncata David D. Keck and J. Clausen 1935-6-25 3778 Butte 2.2 mi s, on road to Yankee Hill Flea Valley Comment
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC27918  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1978-7-19 1728 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  CHSC42808  Camassia quamash subsp. quamash L. P. Janeway 1987-7-5 2437 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  CHSC95183  Camassia quamash subsp. quamash R. D. Fischer 2005-6-5 827 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CAS-BOT-BC216300  Camissonia Lowell Ahart No date on label s.n. Butte Peter Ahart Ranch. Noncut. Comment
  RSA4156  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  SEINET10463240  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte Brush Creek Comment
  CHSC19943  Capsella bursa-pastoris M. S. Taylor 1975-3-25 419 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC78069  Capsella bursa-pastoris Megan Lee Hudzik 1998-4-16 20 Butte Bidwell Park, 50 m w of Horseshoe Lake, 6 miles s of Bidwell Mansion. Next to a stream. 91 Comment
  JEPS122230  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 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
  CHSC498  Cardamine californica P. Delaplane 1965-3-2 66 Butte Found ca. 100 yds. from covered bridge on Honey Run Rd. ca. 8 mi. SE of Chico. 304 Comment
  CHSC38419  Cardamine californica var. californica Vernon Oswald 1982-12-23 31 Butte Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CAS-BOT-BC37875  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  CHSC34482  Cardamine oligosperma A. K. Bos 1978-3-11 2 Butte Along Cohasset Hwy, 1 mi ne intersection Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  SEINET10448559  Cardamine oligosperma Mary Susan Taylor 1979-3-31 Taylor 1966 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC20112  Cardamine pachystigma var. dissectifolia M. S. Taylor 1975-5-9 570 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC27943  Cardamine pachystigma var. dissectifolia M. S. Taylor 1979-3-20 1946 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CDA34716  Carduus pycnocephalus L. Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico. Comment
  CAS-BOT-BC18214  Carex H. F. Copeland 1920-8-29 163 Butte Jonesville by irrigation ditch. 1219 Comment
  CHSC52745  Carex L. P. Janeway 1988-7-29 3134 Butte Near West Branch Feather River at crossing of road into Coon Hollow. 1615 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 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
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  SEINET7550019 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Sycamore Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. Oroville Dam quad 7.5' quad. 274 Comment
  SD468  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville; about the edges of the Lily Pond, a permanent pool; warm in the summer. 1700 Comment
  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
  CHSC110471  Carex bolanderi L. P. Janeway 2013-5-9 11108 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +-overlooking Cresta, along Camp Creek Road 2.7 road km northeast of Dixie Road. 670 Comment
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  UC823293  Carex bolanderi Lewis S. Rose 1939-6-7 39235 Butte 3 mi N of Pulga; Feather River Canyon 518 Comment
  CHSC102951  Carex brainerdii L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. 'Magalia Serpentine,' east side of Coutolenc Road, between that road and the first bend in the road down to the 'Magalia 73 Dam. 707 Comment
  CHSC41355  Carex brainerdii R. A. Schlising 1983-6-9 4421 Butte N part of county NE of Lomo along Humboldt Road; Carpenter Ridge. 1341 Comment
  UC1755303  Carex brainerdii Dean W. Taylor 2004-7-21 19198 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  UCD140240  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte South side of Butte Creek 1/2 mile west of Cherry Hill. 1402 Comment
  SEINET8215214  Carex cyrtostachya Unknown 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles southeast of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC52857  Carex densa L. P. Janeway 1988-6-26 2883 Butte SE rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi NE of the power lines (high voltage). 182 Comment
  CAS-BOT-BC34954  Carex densa L. P. Janeway 1987-5-7 2022 Butte NE side of Hwy 149 0.5 mile NW of Hwy 70. 74 Comment
  CHSC52860  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-8-2 3152 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs campground. 1143 Comment
  CHSC111132  Carex feta Lowell Ahart 2012-6-2 18138 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oriville. 286 Comment
  CHSC99757  Carex feta Lowell Ahart 2008-6-13 14818 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  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
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. 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
  SEINET8990670 Image available Carex gracilior Unknown 2009-1 15911 Butte 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut,about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC20951  Carex heteroneura J. D. Jokerst 1982-9-7 1658 B Butte Montane meadows and roadside ditches, east end of Coon Hollow on north side of the West Branch Feather River. 1676 Comment
  CHSC45256  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising 1988-7-1 2931 Butte Mdw between the pair of lakes at the SE-most headwaters of Butte Cr. 1965 Comment
  HSC96350  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  SEINET7561554 Image available Carex hirtissima M. J. Waterway, M. J. Lechowicz 1984-4-24 3069 D Butte Plumas National Forest, ca 2 mi W of Forbestown along Ponderosa Way, 0.3 mi N of jct with Lower Forbestown Road. Comment
  CHSC52914  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3062 Butte Upper canyon of Philbrook Creek, 0.7 mi W of the pass. 1920 Comment
  JEPS121935  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  SEINET4231761 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC7557  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3044 Butte Just below saddle between Coon Hollow and Chips Creek. West facing rocky outcrop near dry minor drainage. 1889 Comment
  CAS-BOT-BC7575  Carex integra J. D. Jokerst; R. A. Schlising 1982-5-19 1579 Butte Grassy area adjace to Fall River in area of Fall River Campground, 1.55 miles north of Camp 18. 1005 Comment
  CHSC113433  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC52248  Carex nudata L. P. Janeway 1987-7-4 2420 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  JEPS120139  Carex nudata Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18010 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC1594530  Carex nudata Lowell Ahart 1992-4-7 6744 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CAS-BOT-BC119563  Carex nudata L. P. Janeway 1988-4-10 2614 Butte Chico quad, Along edge of Butte Creek just E of the Skyway. 70 Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  JEPS117597  Carex pachystachya var. pachystachya Lowell Ahart 2010-9-28 17271 A Butte On damp black soil, about 20 yards west of Big Kimshew Creek, in shade, others out in the open dry meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reserv 1886 Comment
  CHSC84279  Carex praegracilis Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10221 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CHSC87219  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 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
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  CHSC94305  Carex subfusca Lowell Ahart 2006-7-25 13055 Butte West of the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS102947  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River 1402 Comment
  UC478549  Carex subfusca E. B. Copeland 1929-7-20 611 Butte in woods by Jones Creek Jonesville 1500 Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  RSA0080127  Carex texensis Lowell Ahart 2012-6-14 18182 Butte Chico. At the entrance to Lower Bidwell Park, east of Woodland Avenue. 61 Comment
  CHSC45614  Carex utriculata L. P. Janeway 1988-7-2 2952 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC45068  Carex vesicaria Vernon Oswald 1987-6-9 2972 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CHSC94924  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills. West side of Morris Ravine arm of thermalito Diversion Pool (Feather River), 2.0 km north-northeast of Thermalito Diversion Dam. At edge of water. 68 Comment
  SEINET10946139  Carex vulpinoidea Vernon H. Oswald, Lowell Ahart 1990-5-26 Oswald 4254 Butte T18N R3E ne/ne/S3, Freshwater Marsh in Riparian Woodland. Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Densely cespitose sedge on wet, sandy soil bordering a dredge pond. 32 Comment
  CHSC100882  Carex whitneyi L. P. Janeway; Linus Gog 2008-7-19 9443 Butte High Cascade Range. North side of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). Especially along old logging disturbed route that was ripped and allowed to return to natural. 1740 Comment
  CHSC43868  Carex whitneyi Vernon Oswald 1983-8-17 985 Butte Humboldt Summit on Humboldt Rd. n-e of Jonesville at the jct. of Butte, Tehama, and Plumas Counties. 1999 Comment
  RSA739649  Carex whitneyi L. P. Janeway, Linus Gog 2008-7-19 9443 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  CHSC838  Cassia covesii 1932-6-26 Butte Comment
Read comments Apr 2 2012
  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
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  JEPS18862  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5602 Butte 0.3 mi n and below Nelson Bar road junction with the Pentz-Magalia road (along Nelson Bar road, 1.5 mi s and above bridge across West Branch of Feather River, on the n side of the canyon) 304 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CHSC40878  Castilleja applegatei subsp. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  UC726497  Castilleja applegatei subsp. pinetorum A. A. Heller 1942-6-5 16498 Butte 3 mi w Pulga Comment
  JEPS117215  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  SFV10458  Castilleja attenuata M. L. Vincent 1964-4-9 532 Butte 1.5 miles south of Pearson Road. Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  JEPS4547  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (s of the Y, field on U.S. Hwy 99E) Comment
  CHSC83908  Castilleja exserta subsp. exserta Lowell Ahart 2003-4-10 10086 Butte On the west side of a wash, near the south rim of South Table Mountain, about 2 miles (air) north of Oroville. 302 Comment
  CHSC90143  Castilleja exserta subsp. exserta Andy Winkler 1980-4-15 13 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  POM193338  Castilleja payneae E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  CHSC3758  Castilleja pruinosa R. L. Adams 1964-4-2 80 Butte Roadside SE side of road, 1 1/2 mi. E. of Ten-Mile House on highway 32, 10 mi. E. Chico. Comment
  CHSC107595  Castilleja tenuis Lowell Ahart 2011-7-9 17575 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
  CHSC46316  Castilleja tenuis Vernon Oswalf 1989-6-8 3806 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CHSC4344  Catalpa bignonioides Carl Pejsa 1967-3-9 19 Butte Bidwell Park Forestry Station. Comment
  CHSC5952  Catalpa speciosa M. MacArthur 1968-6-17 198 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  UC1281468  Ceanothus H. E. McMinn 1946-5-11 5512 Butte one mi e Forbestown; e of Forbestown Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  SEINET10493627  Ceanothus cuneatus Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  HSC18286  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather River Canyon, Pulga 488 Comment
  CAS-BOT-BC50712  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  OBI10318  Ceanothus lemmonii H. E. McMinn 1946-5-11 5512 Butte One mi E of Forbestown Comment
  CAS-BOT-BC52013  Ceanothus prostratus John Thomas Howell 1962-6-16 37582 Butte Pentz road 2 mi. S. of Magalia 609 Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC83773  Ceanothus prostratus D. O. Burge 2007-5-11 921 a Butte East shore of Lake de Sabla 850 Comment
  CHSC3553  Ceanothus prostratus Gary Dutton 1966-2-26 84 Butte Found along road near Paradise Calif. about 4 miles N. of town. Comment
  RSA481917  Ceanothus prostratus Aaron Liston 1988-3-15 6972 Butte East of Cohasset, Ponderosa Way 500 Comment
  RSA769802  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15425 Butte Southeast side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC2026862  Celtis sinensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CDA34188  Centaurea maculosa Ed Finley 2010-6-2 PDR# 1303791 Butte Paradise; Horning Ranch, Edgewood Lane. 0 Comment
  CAS-BOT-BC272092  Centaurea melitensis Lowell Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut 50 Comment
  SEINET10474154  Centaurea melitensis Mary Susan Taylor 1981-3-24 Taylor 3447 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
  CHSC102513  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
  RSA755414  Centaurea solstitialis L. Ahart 2009-6-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  SEINET10454837  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-6-14 Taylor 2874 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SEINET9801333 Image available Cephalanthus occidentalis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC66677  Cephalanthus occidentalis var. californicus Vernon Oswald 1996-7-17 8061 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
  JEPS108153  Cerastium arvense L. P. Janeway, J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge 991 Comment
  CAS-BOT-BC388176  Cerastium fontanum Lowell Ahart 1987-5-22 5679 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  UCR190822  Cercis occidentalis 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
  UC1586578  Chaenactis glabriuscula var. megacephala Vernon H. Oswald and Lowell Ahart 1991-6-5 4645 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SBBG28959  Chamaesaracha nana E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  SEINET10546750  Chamaesaracha nana Mary Susan Taylor 1978-7-19 Taylor 1767 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  SEINET9250421  Chamaesyce hooveri B. Crampton 1978-1 Butte Comment
  JEPS115678  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville 41 Comment
  CHSC38440  Chamaesyce nutans Vernon Oswald 1983-7-8 844 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  CHSC38441  Chamaesyce ocellata Vernon Oswald 1983-7-22 900 Butte Upper Bidwell Park, Chico, on the edge of Upper Park Rd. near the w entrance to Parking Area K (Bare Hole). 128 Comment
  CHSC113526  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC110329  Chamaesyce serpillifolia subsp. serpillifolia B. Castro; Margie Graham 2006-8-24 1604 Butte Sacramento Valley. Ca 1,8 mi W of Hwy 99 and 1 mi E of Richvale, ).25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft from toe of E levee. 32 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-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  JEPS104147  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  SEINET10529919  Cheilanthes gracillima Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5223 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  JEPS115185  Chenopodium botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  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
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  JEPS117271  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 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
  HSC38028  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-10 2494 Butte Beside SR 191 just N of its junction with SR 70 Comment
  UC142064  Chlorogalum angustifolium Mrs. R. M. Austin May 1899 737 Butte Comment
  SEINET10472639  Chlorogalum pomeridianum Mary Susan Taylor 1975-3-10 Taylor 406 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  JEPS55717  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 821 Butte about 3 mi e Paradise (at junction of Dendelar Circle and Steam Road) Comment
  HSC97883  Chondrilla juncea L. Ahart 2003-7-10 10372 Butte N slope of Ponderosa Dam, about 2 mi. (air) NW of Forbestown 297 Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  CHSC12738  Chorizanthe stellulata M. S. Taylor 1974-5-20 236 Butte Scattered patches ca. 50 ft n of Skyway to Paradise, ca. 6 mi e of Chico. 76 Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  SD8111  Chorizanthe stellulata Dr. C. C. Parry May 1882 Butte Chico Comment
  CAS-BOT-BC36368  Chrysolepis sempervirens John H. Thomas 1974-11-3 17659 Butte Between Stirling City and Butte Meadows, north of Chico. 5.2 miles from Butte Meadows along the road. 1524 Comment
  CHSC39935  Cicendia quadrangularis M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5398 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  UC478464  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  CHSC46311  Cirsium occidentale var. candidissimum Vernon Oswald 1989-6-8 3803 Butte Camp Creek Rd, 0.5 mi s of Dogwood Creek, n of Pulga. Along road. 585 Comment
  SJSU11874  Cirsium occidentale var. candidissimum J. B. Willis Jr. 1969-5-3 Butte State Highway 70, 7 mi N of Oroville Comment
  CHSC102503  Cirsium occidentale var. venustum Lowell Ahart 2009-5-30 15782 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC8131  Cirsium occidentale var. venustum K. Henegar 1969-5-19 96 Butte Upper Bidwell Park, across from Alligator Hole. Comment
  UC397531  Cirsium vulgare E. Bleopelaud 1929-7-1 Butte Jonesville 1650 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  JEPS105639  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt, Adam Henderson 2003-6-3 7803 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.5 km southwest of mouth of Bean Creek 283 Comment
  SEINET12194210  Clarkia biloba subsp. brandegeeae Unknown 1984-1 4658 Butte Along Ponderosa Way, ca 1/8 mi W of Ponderosa Dam, ca 2 mi NW of Forbestown; 370 Comment
  CHSC42365  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte On roadcuts near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC88644  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-18 352 Butte Plumas National Forest. Mill Creek Cal Trans Station. 426 Comment
  CHSC50052  Clarkia gracilis subsp. gracilis Lowell Ahart 1990-4-8 6437 Butte On banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UC1186582  Clarkia gracilis subsp. gracilis G. I. Stage, R. W. Thorp 1959-6-21 59 -119 Butte 11.9 mi ne Chico (Highway 32) Comment
  POM37797  Clarkia gracilis subsp. gracilis C. C. Bruce 1898-05 2419 Butte Grain fields. Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  CHSC70734  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1995-7-16 4858 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  CAS-BOT-BC163284  Clarkia modesta Saichi Kawahara 1968-5-4 372 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CAS-BOT-BC163644  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-4 2171 Butte Thermalito 65 Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera 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
  CHSC11091  Clarkia rhomboidea Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC76950  Clarkia rhomboidea Ida Ryan 1893-5-1 Butte Little Chico. Comment
  CHSC88090  Clarkia rhomboidea R. D. Fischer 2004-4-17 175 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on cut bank. 365 Comment
  UC1018287  Clarkia rhomboidea H. Lewis and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CAS-BOT-BC165438  Clarkia unguiculata Lowell Ahart 1989-5-31 6333 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Croville 304 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  SEINET13094404  Claytonia palustris John R. Swanson 1959-1 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  CAS-BOT-BC439434  Claytonia parviflora subsp. parviflora Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC60687  Claytonia parviflora subsp. parviflora Vernon H. Oswald; Jim Snowden 1993-3-18 5234 Butte South side of Nugen Canyon, on the SE side of Neal Rd., about 0.4 mi southeast of 'The Narrows'. 109 Comment
  CHSC90643  Claytonia parviflora subsp. parviflora Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. 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
  UC83810  Claytonia parviflora subsp. parviflora Mrs. R. M. Austin May 1896 73 Butte Little Chico Creek Comment
  SEINET10572719  Claytonia perfoliata var. perfoliata Mary Susan Taylor 1981-5-28 Taylor 3807 A Butte Street weed in shaded moist areas in Chico. 61 Comment
  CAS-BOT-BC443705  Claytonia rubra Lowell Ahart 1987-5-6 5534 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC443706  Claytonia rubra Lowell Ahart 1984-7-19 4743 Butte 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 1500 Comment
  CHSC4714  Claytonia rubra subsp. rubra R. Carter 1966-4-28 383 Butte Found in Feather R. Canyon ca. 1.5 mi. SW of Cresta Power House on E side Hwy. 70; growing in loose granite on bank above road. 670 Comment
  UC726582  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Magalia Comment
  CAS-BOT-BC91350  Clematis lasiantha Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC1439  Clematis lasiantha H. Goodyear 1939-5-1 Butte Humboldt road. 426 Comment
  UC175285  Clematis lasiantha A. A. Heller 1913-4-5 10700 Butte hills n. side of Feather river above Oroville; Feather R. Comment
  CHSC31844  Clematis ligusticifolia L. Ahart 1976-8-30 1192 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  UC103389  Collinsia heterophylla Mrs. R. M. Austin Apr 1896 125 Butte Little Chico Creek Comment
  CHSC4624  Collinsia sparsiflora R. Carter 1966-3-22 310 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. Comment
  RSA633334  Collinsia sparsiflora Michael A. Vincent, Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  UCD118124  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC42554  Collomia heterophylla Lowell Ahart 1987-5-6 5533 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM65171  Collomia heterophylla Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET2440903  Collomia heterophylla R. M. McKee 1918-5-12 s.n. Butte Magalia. 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
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  CHSC42728  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, aobut 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 67 Comment
  CAS-BOT-BC210519  Cornus sessilis C. R. Quick 1943-7-26 43 -20 Butte Big Bar Mt. near Fagan's Saddle, Plumas Nat. Forest Comment
  CHSC62106  Cornus sessilis B. Castro; R. A. Schlising, L. P. Janeway 1987-4-4 53 Butte Ca 4 air mi N of Magalia on the far E end of Paradise Lake, at edge of unnamed creek which feeds into this arm of the lake. 792 Comment
  CHSC94162  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. 1113 Comment
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  UC1303041  Corydalis caseana subsp. caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  RSA0080123  Cotula australis Lowell Ahart 2011-5-9 17353 Butte On the south side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  CAS-BOT-BC427624  Crassula aquatica John Thomas Howell 1978-4-17 52835 Butte Table Mountain 381 Comment
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC427916  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC58263  Crassula connata Lowell Ahart 1992-4-7 6742 Butte On the east side of Biggs Princeton Road and on the west side of the Southern Pacific Railroad, in Biggs. 30 Comment
  CHSC70850  Crassula connata Lowell Ahart 1998-4-8 7950 Butte 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  SEINET12215662  Crassula erecta Unknown 1977-1 19 Butte ca 75 m NW of Cherokee Road, North Table Mountain, 8 km N of Oroville 366 Comment
  CHSC46739  Crassula saginoides Lowell Ahart 1974-4-11 393 Butte Peter Ahart Ranch, about 2 miles north and 1 1/2 mile north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10449713  Crassula saginoides Lowell Ahart 1984-5-12 Ahart 4604 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  SEINET10973378  Crassula tillaea Mary Susan Taylor 1978-4-14 Taylor 1554 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
  CHSC102563  Crataegus monogyna L. P. Janeway 2010-4-1 9969 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Upper Park Road, east side of the start of Yahi Trail (at Upper Park Road). 91 Comment
  JEPS118613  Crataegus monogyna L. P. Janeway 2011-4-20 10235 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. Chico 7.5; quad. Comment
  SEINET10483806  Crataegus oxyacantha Mary Susan Taylor 1975-5-24 Taylor 769 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC83050  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  CHSC33409  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-28 3933 Butte E. of Jonesville, on road towards Scotts John Creek. 1828 Comment
  JEPS94328  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte about 8 air mi ne of Stirling City (along edge of the dirt road and n of the camps along Little Kimshew Creek, about 1/4 mi n of the County Road, e of Bald Mountain) 1219 Comment
  UC480664  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville Comment
  CHSC40754  Cryptantha flaccida Lowell Ahart 1985-5-6 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  JEPS117205  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  POM64217  Cryptantha flaccida A. A. Heller, H. E. Brown 1902-5-9 11940 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC62534  Cryptantha intermedia L. P. Janeway 1993-5-2 4337 Butte Sperpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  SEINET10935928  Cryptantha intermedia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4742 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
  JEPS83262  Cryptantha rostellata C. C. Parry 1887-4-1 Butte Chico Comment
  CHSC33259  Cryptantha simulans R. A. Schlising 1980-6-24 3774 Butte N of Oroville along Hwy 70 in canyon of North Fork of Feather River; 0.2 mi N of Cresta Powerhouse. 457 Comment
  SBBG54544  Cryptantha watsonii T. Lindskog 1967-6-10 Butte Craters of the Moon Comment
  CAS-BOT-BC85567  Cupressus macnabiana Lowell Ahart 1985-5-15 5007 Butte 4 miles north-east of Jarbo Gap, near a steel tower line, west of Rocky Ridge. 800 Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  CHSC105824  Cuscuta californica var. breviflora Lowell 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. 1899 Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  JEPS119952  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  CHSC46488  Cuscuta howelliana Lowell Ahart 1978-5-15 1721 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
  JEPS102501  Cuscuta indecora Vernon H. Oswald 2000-11-2 9982 Butte W of Chico (Chico Sewage Treatment Plant, Chico River Road) 41 Comment
  JEPS47094  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte Chico Comment
  CHSC27581  Cuscuta subinclusa Robert Schlising 1977-8-8 3204 Butte Forest Ranch, 1,8 mi S jct Nopel Road and Highway 32 Comment
  SD3819  Cuscuta suksdorfii E. B. Copeland 1931-7-17 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  RSA774126  Cymopterus terebinthinus var. californicus L. Ahart 2010-9-21 17233 Butte On both sides of the County Road, between Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC68352  Cyperus bipartitus L. P. Janeway 1987-6-20 2272 Butte Seepy area near Fall River, and near the road to Fall River and Cascade 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  CHSC68378  Cyperus bipartitus L. P. Janeway; C. A. Janeway 1986-10-4 1903 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD141013  Cyperus difformis E. M. Johnston 1915-1 W- 132 J Butte Biggs. Comment
  CHSC102815  Cyperus eragrostis Lowell Ahart 2009-6-19 15950 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS108952  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS120838  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 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
  JEPS124327  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA0037179  Cyperus eragrostis Lowell A. Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UC1100533  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13049 Butte near caretaker's house Greylodge Game Refuge (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  RSA0028815  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  CHSC100231  Cyperus erythrorhizos John Dittes 2003-10-8 848 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
  UC1100413  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13036 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  UCD141048  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC43785  Cyperus esculentus Vernon Oswald 1987-7-23 3145 b Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 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. Comment
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  UCR257984  Cyperus iria Whitney Brim-Deforest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs, in rice field located just on the north side of West Hamilton Road, c. 1.74 miles west of Hwy 99 30 Comment
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 Comment
  CAS-BOT-BC114078  Cyperus squarrosus Ira L. Wiggins 1928-9-9 3335 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CHSC45150  Cyperus squarrosus Lowell Ahart 1972-5-24 112 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
  CHSC65353  Cyperus squarrosus Lowell Ahart 1995-10-3 7674 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CAS-BOT-BC114201  Cyperus strigosus Lowell Ahart 1987-9-24 5901 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC34137  Cyperus strigosus L. Ahart 1981-9-19 3185 Butte Along edge of Feather River, ca. 100 m s of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC94584  Cyperus strigosus Lowell Ahart 2006-9-11 13299 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS88227  Cyperus strigosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7730 Butte at n. end of Riparian Sanctuary Sacramento River Nat'l Wildlife Refuge (Llano Seco Unit, U.S. Fish and Wildlife Service parcel between 7 mi. Lane and Sacramento R.); , Llano Seco Unit 28 Comment
  JEPS106116  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  JEPS113229  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west 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 844 Comment
  UC399278  Cystopteris fragilis Mrs. R. M. Austin May 1896 244 Butte bluffs, Butte Creek Butte Creek Comment
  RSA21490  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  CAS-BOT-BC189853  Danthonia californica L. P. Janeway; R. A. Schlising 1988-8-16 3032 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  CHSC3609  Daphne odora R. Jaegel 1966-2-19 14 Butte Collected 6 blocks north of Bidwell Mansion; Chico. Comment
  CHSC33371  Darmera peltata Steven Azevedo 1980-4-16 15 Butte Middle of Mud Creek, 1 mi. e of Richardson Spring. 243 Comment
  SEINET10454791  Daucus carota Mary Susan Taylor 1982-8-16 Taylor 4986 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  SEINET10536232  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3570 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC32756  Delphinium gracilentum J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte S side of Olive Highway, 0.4 mi SW of its junction with Forbestown Rd (ca 6.0 mi E of Oroville). Comment
  CAS-BOT-BC10103  Delphinium hesperium subsp. pallescens H. E. Brown 1897-5-1 207 Butte near Clear Creek Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CHSC57138  Delphinium nudicaule R. A. Emmrich 1975-4-20 80 Butte Cohasset Hwy., 10 yds w of roadside, ca. 6 mi n of Chico. 121 Comment
  CHSC56769  Delphinium nuttallianum M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  POM196083  Delphinium nuttallianum E. B. Copeland 1929-6-12 1211 Butte chaparral near north Willow Creek. 1524 Comment
  CHSC2464  Delphinium patens subsp. patens P. Delaplane 1965-3-30 27 Butte Along W. side of Cohasset Rd. 1/4 mi. S.W. of intersection Cohasset Rd. and Keefer Rd. 213 Comment
  CAS-BOT-BC121610  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC59344  Delphinium variegatum J. L. Guardino 1992-4-18 12 Butte Along southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  UCD14293  Delphinium variegatum Katherine Courtney 1983-5-15 13 Butte Butte Co.; along the east side of Highway 70, 4 mi. southwest of Oroville, north of Polermo Road intersection; 60 Comment
  CHSC75397  Delphinium variegatum subsp. variegatum Jennifer Slater 1997-4-6 4 Butte In vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC94288  Deschampsia elongata Lowell Ahart 2006-7-16 12996 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
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC3301  Dicentra formosa M. L. Hillier 1966-4-23 Butte Side of rd. Approx. 4 miles e. of Stirling City. Comment
  CAS-BOT-BC402389  Dicentra formosa subsp. formosa H. F. Copeland 1929-6-9 s.n. Butte Jonesville 1524 Comment
  CHSC19645  Dicentra formosa subsp. formosa K. Stern 1966-4-1 Butte Chico. Comment
  RSA21538  Dicentra formosa subsp. formosa Carl B. Wolf 1937-5-17 8724 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, W side of Big Butte Creek 732 Comment
  CAS-BOT-BC500056  Dichelostemma capitatum Jim Riley 1923-4-2 s.n. Butte Richardson Springs/. Comment
  CHSC4223  Dichelostemma capitatum subsp. capitatum L. R. Alexander 1967-3-9 29 Butte Fairly abundant 4 mi. se of Chico ca. 200 yds. Off the left hand side of Paradise road. 182 Comment
  CHSC56815  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC7132  Dichelostemma multiflorum J. Borgstrom 1969-5-2 23 Butte Ca. 100 yds e of 99E and Neal Rd, on Neal Rd, 3 ft. off of s side of rd. 39 Comment
  SEINET10971332  Dichelostemma pulchellum Mary Susan Taylor 1980-3-1 Taylor 2332 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CAS-BOT-BC502516  Dichelostemma volubile A. A. Heller 1913-5-28 I 0765 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  UCD170261  Diospyros virginiana var. virginiana D. O. Burge 2016-10-22 2184 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CHSC3270  Diplacus kelloggii M. L. Hillier 1966-3-28 Butte W. about 1/2 mile from Cherokee rd. in a pasture on top of Table Mt. Comment
  CHSC38703  Diplacus kelloggii Vernon Oswald 1983-3-13 156 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CHSC61335  Diplacus layneae Lowell Ahart 1993-7-29 7116 Butte About 2 1/2 miles north-east of Bald Mountain about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC63666  Diplacus layneae B. Castro; R. Zebell 1989-4-8 315 Butte Ca 3 mi S of Brush Creek, ca 0.3 mi E of Bald Rock Rd in decomposed granite, along New Bean Creek Rd ca 0.3 mi N of Little Bald Rock. 1005 Comment
  SBBG66702  Diplacus tricolor M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  CAS-BOT-BC208613  Distichlis spicata Lowell Ahart 1981-5-16 2808 Butte Along the edge of the road, Gray Lodge Waterfowl Management Area, 11 miles SW of Gridley 35 Comment
  CDA31991  Dittrichia graveolens L. Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito. Comment
  CHSC114964  Dodecatheon hendersonii Lowell Ahart 2015-3-14 19947 Butte On the south side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  SEINET10449646  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1646 Butte Cherry Creek meadow, on S side of Old Humboldt Road, ca. 4 mi E of Butte Meadows; Montane Meadow in Yellow Pine Forest. 1524 Comment
  CHSC25346  Downingia bicornuta M. P. Hayes 1977-4-24 19 Butte Under gully culvert along Hwy. 99 ca. 2.2 km s of Butte Creek. 60 Comment
  UC336558  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1890 Butte near Chico Comment
  UC398683  Downingia bicornuta var. bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi n Chico Comment
  CHSC42258  Downingia cuspidata John E. Hunter 1986-4-12 50 Butte Vacant lot within City of Chico, ca. 80 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  SBBG69654  Downingia pulchella M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC41348  Draba verna Lowell Ahart 1983-5-7 3967 Butte Honcut. Peter Ahart Ranch. About 1.5 miles north and 2.125 miles esat of Honcut. 50 Comment
  RSA325019  Draba verna L. Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, NE of Honcut, ca 12 miles S of Oroville. 50 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC34  Dryopteris arguta V. Holt 1935-11-1 Butte Honey Run grade. 365 Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  JEPS128762  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south Oroville. Comment
  CHSC116128  Dysphania pumilio Lowell Ahart 2015-11-7 20618 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
  CHSC49539  Echinochloa colona Vernon Oswald 1987-8-13 3212 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. On the edge of a bean field. 48 Comment
  JEPS114772  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CAS-BOT-BC208562  Echinochloa oryzicola Lowell Ahart 1979-9-8 s.n. Butte California Rice Experiment Station 33 Comment
  CDA1997  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CHSC25340  Echinodorus berteroi M. P. Hayes 1977-8-13 33 Butte Butte College Campus, in northern-most pond between the branches of Clear Creek. 88 Comment
  CHSC30756  Eclipta prostrata M. S. Taylor 1980-9-26 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset, Chico. 30 Comment
  CHSC33245  Eclipta prostrata Mary Banchero 1979-9-23 40 Butte SW of Chico and e of Ordbend at w margin of Butte Co. at Sacramento River and Ord Ferry Road. Comment
  HSC104030  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte About 1 mi. NW of Biggs, ~ 500 yds. W of Riceton Highway, on the south side of Biggs Princeton Rd. 27 Comment
  CDA5097  Elaeagnus angustifolia L. Ahart, M. G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  CHSC115337  Elatine Lowell Ahart 2015-4-24 20067 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC113455  Elatine ambigua Lowell Ahart 2014-8-8 19697 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  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
  JEPS98322  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station: field on S side of Hwy 162 between the railroad and Riceton Road 30 Comment
  JEPS122151  Elatine californica Lowell Ahart 2014-4-30 19420 Butte About 50 yards south of the Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southeast of Honcut. Comment
  SEINET10836546  Eleocharis Mary Susan Taylor 1978-6-24 Taylor 1668 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CAS-BOT-BC113636  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC113462  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98468  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CAS-BOT-BC113583  Eleocharis decumbens Lowell Ahart 1980-7-4 2459 Butte Along Forbestown Road Comment
  JEPS106370  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 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
  UCSB63743  Eleocharis engelmannii Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 403 Comment
  CDA38946  Eleocharis macrostachya G. D. Barbe, T. C. Fuller 1982-6-14 3678 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  JEPS103568  Eleocharis montevidensis Lowell Ahart 2002-6-7 9710 Butte On the S side of North Honcut Creek, Peter Ahart Ranch, ca 1 mile N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 38 Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CHSC96332  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  JEPS98597  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  SEINET13710024  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8386 Butte 13 Mi. SE of Oroville (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  CHSC78928  Eleocharis radicans Lowell Ahart 2000-10-2 8700 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC66457  Elymus glaucus subsp. glaucus Vernon H. Oswald; Lowell Ahart 1996-6-10 7732 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CDA31733  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico 0 Comment
  CHSC29022  Enemion occidentale M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2460 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Bangor-Oroville Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  SEINET12192833  Epilobium adenocaulon M. S. Taylor 1975-1 954 Butte ca 1 mi S of Paradise, E side of Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy 610 Comment
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  RSA458688  Epilobium brevistylum Louis C. Wheeler 1928-8-21 413 Butte Neighborhood of Jonesville; swamp near head of Willow Creek 1524 Comment
  JEPS95175  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and the Sacramento River (Sacramento River National Wildlife Refuge, Llano Seco Unit, at s end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC69047  Epilobium canum subsp. latifolium Lowell Ahart 1997-8-1 7775 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC11781  Epilobium ciliatum subsp. ciliatum E. B. Copeland 1929-7-25 388 Butte Jonesville. 1500 Comment
  JEPS95939  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1999-8-13 8171 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1563292  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6624 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  JEPS119636  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  SEINET3449320  Epilobium densiflorum Unknown 2003-6-30 10330 Butte Forbestown, Forbestown, about 2 air miles northwest, north side of Ponderosa Way, about 1.5 road miles southwest of the Ponderosa Dam 400 Comment
  UC204400  Epilobium densiflorum A. A. Heller 1914-8-20 11691 Butte along creek about 5 mi s Pentz; Dry Creek Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  UC1609317  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC204407  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville Comment
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  SEINET4568214  Eragrostis chloromelas R. McKee 1907-8-18 13903 Butte Chico Comment
  CHSC38819  Eragrostis cilianensis Vernon Oswald 1983-6-29 792 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In the bed of an oxbow of Chico Creek. 91 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC66857  Eragrostis hypnoides Vernon H. Oswald 1996-9-30 8292 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. On the margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CAS-BOT-BC284085  Eragrostis pectinacea var. pectinacea John Thomas Howell 1959-9-20 34687 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC51037  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-7-4 6544 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC50545  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi north of its junction with Philbrook Rd, just west of Philbrook Reservoir. 1706 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
  UC1594578  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CAS-BOT-BC295169  Erigeron inornatus John Thomas Howell 1962-6-15 37507 Butte Magalia 731 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  SEINET10473751  Erigeron philadelphicus Lowell Ahart 1985-7-24 Ahart 5155 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  CHSC88926  Eriochloa acuminata var. acuminata Lowell Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CHSC58275  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  SEINET5495493  Eriodictyon californicum R. McKee, H. Westover 1918-6-5 s.n. Butte Paradise Comment
  CAS-BOT-BC261718  Eriogonum nudum var. oblongifolium A. A. Heller 1914-7-22 11585 Butte Little Summit near Butte Meadows 1463 Comment
  CHSC63709  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 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 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek 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
  JEPS94437  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7883 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road about 1/4 mi w of Rim Road) 731 Comment
  CAS-BOT-BC265211  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 417 Comment
  CHSC73976  Eriogonum ursinum var. ursinum B. Castro; L. Gehrung 1998-7-2 801 Butte Ca y air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, ca 200 ft W of USFS Rd 23N28. 1091 Comment
  CHSC63429  Eriophorum gracile V. H. Oswald; L. P. Janeway, L. Hanson, et al. 1994-6-22 6350 Butte Large marshy meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  CHSC100918  Eriophyllum lanatum var. croceum R. A. Schlising; Bob Banchero 1980-6-17 3734 Butte North of Magalia and De Sabla, along the Skyway, 0.6 miles east of its junction with Coutelenc Road. Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC30289  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2723 Butte North side of Oroville-Quincy Hwy ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC40478  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte West of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  UC569464  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  CHSC35702  Erodium brachycarpum J. D. Jokerst 1982-5-1 1550 Butte Top of North Table Mt, SE of Cherokee Rd ca. 200 meters at mesa's E edge. 60 Comment
  JEPS117895  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  SEINET10837354  Erodium obtusiplicatum Mary Susan Taylor 1974-3-26 Taylor 91 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  RSA530363  Erysimum capitatum var. capitatum M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC29395  Erythranthe bicolor R. A. Schlising; S. Azevedo 1980-6-13 3697 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC44827  Erythranthe bicolor R. Banchero 1980-4-26 132 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC38699  Erythranthe floribunda Vernon Oswald 1983-3-31 244 Butte Upper Bidwell Park, Chico, near the diversion dam on Chico Creek (1.0 mi e of the power lines). 97 Comment
  SJSU5830  Erythranthe floribunda D. C. Polen 1971-4-8 Butte by Skyway c. 10 mi E of Chico 228 Comment
  CAS-BOT-BC153862  Erythranthe glaucescens E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CAS-BOT-BC153867  Erythranthe glaucescens Frank W. Gould 1938-4-23 304 Butte Two miles north of Chico 60 Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  CHSC44786  Erythranthe glaucescens R. Banchero 1980-3-19 70 Butte Along the Skyway 5.5 mi E of Chico, ca 6 mi SW of Paradise. 304 Comment
  CHSC45718  Erythranthe glaucescens M. S. Taylor 1974-4-30 193 Butte The Horse Trough on side of Cohasset Rd., ca. 6 mi n of Chico Municiple Airport. 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
  CHSC44943  Erythranthe guttata J. Marr 1988-3-19 14 Butte 2.5 mi on w side of Cherokee Rd, ca. 6 mi n of Oroville. 342 Comment
  CHSC48998  Erythranthe guttata Vernon Oswald 1987-5-12 2394 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. 80 Comment
  CHSC42716  Erythranthe microphylla Lowell Ahart 1987-6-9 5735 Butte On a sand bar on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
Read comments Jun 25 2013
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. Comment
  CHSC44777  Erythranthe nasuta R. Banchero 1980-5-7 148 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  SD4668  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Joneville, clear openings in woods 1550 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC32643  Erythronium multiscapideum M. S. Taylor 1981-4-2 3473 Butte S side of rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC33586  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte S side of 23N28.2 (rd to Big Bar Mt), 0.9 mi sw of its jct with Four Trees Rd at Coyote Gap, ca. 4 air mi e of Pulga on Hwy 70. 1280 Comment
  CHSC27786  Eschscholzia caespitosa Rene T. Retuta 1978-4-4 2 Butte .50 miles se of Cherokee Rd., ca. 5 miles n of Oroville, North Table Mountain. 396 Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CAS-BOT-BC402963  Eschscholzia californica Lowell Ahart 1985-3-24 4860 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  HSC67920  Eschscholzia lobbii J. P. Smith 1973-3-22 5918 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SD60226  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte In a field near the Hooker Oak, east of Chico in the valley oak belt. Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  CAS-BOT-BC312033  Eucephalus breweri Vernon Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak 2148 Comment
  CHSC105488  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. At Plumas County line. 2030 Comment
  CHSC11090  Euphorbia crenulata Lowell Ahart 1969-5-20 Butte Near Centerville, 10 miles N.E. of Chico. 457 Comment
  POM85677  Euphorbia crenulata C. C. Bruce 1897-04 2091 Butte Cherokee grade. Comment
  UCD142646  Euphorbia ocellata Beecher Crampton 1963-9-9 6881 Butte 3.5 miles east of Honcut, La Porte Road. Comment
  CHSC47419  Euphorbia peplus Lowell Ahart 1976-2-28 1016 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1609057  Festuca arundinacea Lowell Ahart 1993-6-15 6968 Butte about 3.5 (air) mi sw Forbestown (dirt road sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  JEPS120010  Festuca bromoides Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC40452  Festuca californica Lowell Ahart 1985-5-15 4998 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  CHSC74043  Festuca idahoensis H. Durio 1995-6-28 Butte Ca 1.5 mi NW of Strawberry Valley, just E of Lewis Flat and W of boat ramp at Sly Creek Reservoir. In old mined site. 1133 Comment
  JEPS127201  Festuca microstachys var. pauciflora Lowell Ahart 2016-6-4 20935 Butte About 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CAS-BOT-BC278798  Festuca occidentalis Lowell Ahart 1984-6-10 4704 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC88159  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CHSC68916  Festuca subulata Lowell Ahart 1997-7-11 7756 Butte Along a stream, south of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC74165  Festuca subulata B. Castro; L. Gehrung 1998-6-23 796 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, ca 200 ft W of Oro-Quincy Hwy on E side of ridge overlooking Get-Up-and-Get Creek. Ca 100 ft above creek channel. 1213 Comment
  CHSC99566  Festuca subuliflora L. P. Janeway 2008-6-22 9432 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 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
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  CHSC107927  Foeniculum vulgare L. P. Janeway 2011-7-7 10504 Butte Sacramento Valley. Oroville, north edge of the levee on the south side of the Feather River, 125 m east of Bedrock Park. 49 Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CAS-BOT-BC454524  Fragaria vesca subsp. californica M. S. Taylor 1980-4-1 2421 Butte Along S side of Butte Creek, ca. 1/4 mile downstream from Honey Run covered bridge, ca. 6 miles E of Chico. 121 Comment
  CAS-BOT-BC437080  Fragaria virginiana subsp. platypetala H. F. Copeland 1920-8-29 162 Butte Jonesville 1219 Comment
  UCD112793  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  CHSC34188  Frangula purshiana L. Ahart 1981-9-15 3175 Butte Along edge of road on w side of Sly Creek Reservoir, ca. 1/2 mi n of Sly Creek Dam. 1150 Comment
  CAS-BOT-BC53825  Frangula rubra A. A. Heller 1914-5-18 11404 Butte Between Chico and Forest Ranch, 14 miles from Chico. 731 Comment
  CHSC109662  Fraxinus profunda Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area. Lower Bidwell Park, Chico. 71 Comment
  CHSC116955  Fremontodendron californicum Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave., 60 Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
Read comments Oct 5 2009
  CAS-BOT-BC508148  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC36542  Galium aparine L. Ahart 1982-6-4 3557 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 304 Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  CHSC82424  Galium aparine Lowell Ahart 2002-5-7 9630 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
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  POM68690  Galium aparine var. echinospermum C. C. Bruce 1897-06 1955 Butte Chico. Comment
  CHSC34219  Galium bolanderi M. S. Taylor 1981-5-29 3815 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. 853 Comment
  UC426969  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville 1700 Comment
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC61648  Galium grayanum var. grayanum Lowell Ahart 1993-9-8 7165 Butte On the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CHSC61008  Galium murale Lowell Ahart 1993-5-31 6956 Butte In Nature Garden, Durham Elementary School, Durham. 51 Comment
  CHSC90959  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC44427  Galium parisiense Lowell Ahart 1988-6-29 6091 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  JEPS120950  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  JEPS9392  Galium sparsiflorum subsp. sparsiflorum Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4725 B Butte 0.4 mi below Nimshew (along Butte Canyon side, on Nimshew (Humbug) Rd) 701 Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC64217  Galium trifidum var. pacificum S. C. Morey 1983-8-1 654 Butte On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC1562409  Gamochaeta argyrinea Lowell Ahart 1990-6-16 6523 Butte below high water line Lake Oroville (about 1/2 mi sw of Enterprise Bridge across Lake Oroville) 259 Comment
  UC1948358  Gamochaeta argyrinea John L. Strother with Richard L. Moe 2012-5-17 1373 Butte ca. 8 km southwest of Oroville, east side of Thermalito Afterbay at Larkin Road boatlaunch ramp Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC48444  Garrya fremontii Vernon Oswald 1983-1-13 44 Butte Along Highway 32 ca. 8 mi n-e of Chico. 512 Comment
  CDA42863  Gastridium phleoides L. Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-3/8 miles (air) northeast of Chico. 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
  SEINET10559582  Gastridium phleoides A. Arthur Heller 1902-5-15 Heller 5555 Butte Near Biggs. Comment
  CAS-BOT-BC278702  Gastridium ventricosum Lowell Ahart 1980-5-25 2344 Butte Along Ponderosa Way 500 Comment
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  CHSC81038  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  UC1128922  Genista monspessulana C. G. Albertus 1933-6-6 15 Butte 1 mi. n.w. Nelson's Bar; Chico Quad. Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 Comment
  SEINET10454851  Gentianopsis simplex Mary Susan Taylor 1977-8-17 Taylor 1495 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CHSC113207  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC50047  Geranium dissectum Lowell Ahart 1990-4-8 6434 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 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
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  SEINET10496738  Gilia capillaris Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  SEINET10496743  Gilia capitata subsp. mediomontana Mary Susan Taylor 1976-5-5 Taylor 1109 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  CHSC10594  Gilia tricolor Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC6280  Gilia tricolor L. Lyons 1967-4-27 Butte Field on n side of Richardson's Spring Rd., ca. 1/4 mi e of entrance on n Cohasset Rd., ca. 3.5 mi from East Ave. 91 Comment
  RSA469706  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico Comment
  CHSC5972  Ginkgo biloba M. MacArthur 1968-6-17 209 Butte Ca. 40 ft. N of Big Chico Creek and 40 ft. from path to bridge N of Dining Hall, Chico State College Campus. 60 Comment
  SEINET10464455  Githopsis diffusa subsp. robusta Taylor 1981-5-21 Taylor 3768 Butte South side of Concow road, about 0.5 mile south of its junction with Ponderosa Way (Rim Road), about 20 air miles north of Oroville. T22N R4E NW/SW Sec 1 & NE/NE Sec 2 Pulga SW quad. 853 Comment
  CAS-BOT-BC266564  Githopsis pulchella Peter H. Raven 1953-5-9 5437 Butte 1.2 miles from Bangor on Oroville Road Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC186  Githopsis pulchella subsp. campestris M. Diven 1930-5-15 Butte Humboldt Rd. east of Chico. 243 Comment
  CHSC48011  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-21 521 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.6 mi e of the power lines. 341 Comment
  SEINET10840481  Githopsis pulchella subsp. campestris Edwards EDWARDS s.n. Butte Comment
  SEINET10873414  Githopsis pulchella subsp. campestris A. Arthur Heller, H. E. Brown 1902-5-14 Heller 5548 Butte Berry Canyon, near Clear Creek Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10553596  Glyceria borealis Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3938 Butte T25N R5E se/S6, 5750 ft, Red Fir Forest. Soda Ridge Rd, 1.4 mi W of its junction with Coon Holow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Comment
  UC1609511  Glyceria declinata Lowell Ahart 1993-4-5 6927 Butte ca 0.5 mi e Jct of Hwy 99 and Cottonwood Rd (on s side of Cottonwood Rd) 36 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  SEINET10473777  Gnaphalium chilense Mary Susan Taylor 1978-9-9 Taylor 1924 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CAS-BOT-BC302469  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC38354  Gnaphalium palustre Vernon Oswald 1983-6-3 620 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC75353  Gnaphalium palustre Lowell Ahart 1999-6-12 8086 Butte High water line on the south side of the reservoir, 50 yards east of the dam, 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. 297 Comment
  JEPS108990  Gnaphalium palustre Lowell Ahart 2006-10-8 13425 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  POM252679  Goodyera oblongifolia E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  SEINET13768180  Gratiola ebracteata B. Ertter 1980-5-5 3266 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC109661  Gymnocladus dioicus Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  POM161686  Hackelia nervosa E. B. Copeland 1929-7-17 s.n. Butte About Jonesville. 2000 Comment
  CHSC118505  Hardenbergia violacea L. P. Janeway 2017-2-27 12177 Butte Sacramento Valley. On chain-link fence behind buildings and parking area of 875 Mitchell Ave., Oroville (Feather River Ranger District office). 50 Comment
  CHSC109773  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC306289  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  CAS-BOT-BC305345  Helianthus annuus Lowell Ahart 1982-7-10 3663 Butte In the parking area around the Gray Lodge check in station, about 12 miles south-west of Gridley 35 Comment
  JEPS115050  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CAS-BOT-BC314993  Hemizonella minima Javier Penalosa 1962-6-18 2479 Butte Near confluence of French and Peavine Crks. 640 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. Comment
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  SEINET10454762  Heracleum lanatum Mary Susan Taylor 1975-8-31 Taylor 877 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
  CHSC31609  Hesperevax acaulis var. robustior L. Ahart 1979-5-8 1863 Butte Ca. 1/4 mi n of the Peter Ahart Ranch near the w bank of North Honcut Creek. 3 mi ne of Honcut. 70 Comment
  CHSC27306  Hesperevax caulescens T. B. Devine 1977-5-22 403 Butte Wurlitzer Ranch (west) Vina Prairie, field, next to Haile Road ca 1 mi sw of Hwy 99. 57 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
  CHSC101680  Hesperocnide tenella Lowell Ahart; Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC78153  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte Near the southeast margin of the Thermalito Afterbay, west of the poor dirt road, 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
  JEPS98553  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  CHSC29090  Hesperolinon micranthum M. S. Taylor; J. D. Jokerst 1980-5-15 2637 Butte Ca. 1/4 mi e of Cohasset Rd, on Cohasset Ridge, ca. 9 mi ne of Chico. 396 Comment
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC31557  Heterocodon rariflorum L. Ahart 1973-5-29 246 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC62101  Heterocodon rariflorum B. Castro 1987-5-21 122 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 463 Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CHSC45806  Heteromeles arbutifolia L. P. Janeway 1988-6-19 2816 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/firebreak along powerline (3-wire, wooden pole). 274 Comment
  CHSC77442  Heteromeles arbutifolia Tim Stofer 1997-4-29 34 Butte Located 1 mi. from the shooting range on the South Rim Trail off South Park Dr. in upper Bidwell Park. Comment
  JEPS115158  Heteromeles arbutifolia Lowell Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yareds south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CAS-BOT-BC310252  Heterotheca John Thomas Howell 1959-9-26 35088 Butte Cuesta Power House, N. Fk. Feather River 426 Comment
  CHSC113981  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  JEPS108135  Heterotheca grandiflora Lowell Ahart 2005-11-20 12491 Butte W side of the Poe Power house, E of the North Fork of the Feather River 275 Comment
  CAS-BOT-BC423450  Heuchera micrantha var. micrantha Saichi Kawahara 1968-5-4 382 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  UCD116342  Hibiscus lasiocarpos var. occidentalis T. C. Fuller 1969-8-19 18818 Butte N. side of Nelson West Rd., ca. 3 mi. w. of Nelson Comment
  CHSC11827  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  UCD133143  Hieracium albiflorum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CDA42950  Hirschfeldia incana L. Ahart 2012-10-28 18533 Butte Marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC102729  Hirschfeldia incana Lowell Ahart 2009-7-9 16020 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
  CHSC111955  Hoita macrostachya Lowell Ahart 2012-6-5 18159 Butte Wet area along the poor dirt road, on the south side of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, north Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC84351  Holocarpha virgata subsp. virgata Lowell Ahart 2003-9-22 10616 Butte On the old Southern Pacific Railroad right-of-way, on the east side of Palermo Honcut Highway, about 1/2 mile north of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  SEINET10483356  Holodiscus microphyllus var. glabrescens Mary Susan Taylor 1978-7-18 Taylor 1697 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC34087  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst 1981-5-14 1319 Butte Top of North Table Mt, ca 25 M north of Cherokee Rd at the west edge of the mountain. Comment
  JEPS93844  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte about 7 air mi n of Oroville (about 3/8 mi nw of the Ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  UC600749  Hordeum brachyantherum subsp. brachyantherum H. F. Copeland 1932-8-14 Butte Jonesville Butte Creek (Butte Creek) 1500 Comment
  CHSC42373  Hordeum marinum subsp. gussoneanum Lowell Ahart 1987-5-6 5563 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
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CHSC38823  Hordeum murinum subsp. glaucum Vernon Oswald 1983-3-30 227 Butte Upper Bidwell Park, Chico. In the parking lot at the Rod and Gun Club. 100 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  SEINET10970306  Horkelia fusca subsp. parviflora Mary Susan Taylor 1982-6-24 Taylor 4742 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  CHSC74089  Hosackia oblongifolia var. oblongifolia B. Castro; E. Hubert 1996-7-16 684 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on S-facing slope of recently burned area. 1188 Comment
  CHSC42583  Hydrocotyle umbellata Vernon Oswald 1985-6-26 1865 Butte Oroville Wildlife Area ca. 0.6 mi s of the Hwy 162 entrance. 36 Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC400830  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC176927  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  SEINET10905163  Hypericum anagalloides Mary Susan Taylor 1975-10-4 Taylor 955 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  UC426919  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC81246  Hypochaeris glabra J. Trizzino 2001-5-2 68 Butte North Table Mountain. 384 Comment
  SEINET10532857  Ibicella lutea Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5158 Butte T17N R1E nw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, just se of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  HSC23528  Iris douglasiana A. K. Revard 1967-3-19 3 Butte Goat Rock, 1 mi. W on Goat Rock Rd. from Hwy. 1, 6 mi. N of Bodega Bay 30 Comment
Read comments Nov 5 2013
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CAS-BOT-BC69950  Isoetes howellii Lowell Ahart 1975-6-20 s.n. Butte Peter Ahart Ranch, about two mi. n. of Honcut. Comment
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS98584  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CHSC42749  Isolepis cernua Lowell Ahart 1973-6-17 254 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46423  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte In a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC55623  Isolepis setacea L. P. Janeway 1987-6-19 2252 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 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
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  CHSC61932  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte On the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CAS-BOT-BC210160  Juncus acuminatus Peter Rubtzoff 1978-8-6 9248 Butte Thermalito Forebay, North Area in Lake Oroville State Recreation Area. Near picnic area just off Hwy. 70 Comment
  CHSC30435  Juncus articulatus L. Ahart 1980-7-29 2508 Butte Lower Forbestown Rd ca 1/4 mi N of the intersection with Robinson Mill Rd, W of the town of Forbestown. 750 Comment
  CHSC39332  Juncus articulatus Lowell Ahart 1983-6-26 4136 Butte Along Ponderosa Way. Along the edge of the East Fork of Canyon Creek, mear Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC74020  Juncus balticus subsp. ater B. Castro 1998-6-18 793 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. Moist meadow, at end of old dirt rd at E edge of old homestead site. 929 Comment
  JEPS114976  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  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
  CHSC36969  Juncus bufonius var. bufonius M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4366 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC44244  Juncus bufonius var. bufonius V. Oswald; L. Ahart 1988-7-13 3578 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC112937  Juncus bufonius var. congestus B. Castro 2012-5-29 1925 Butte Sacramento Valley. Between hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  UC1564728  Juncus bufonius var. occidentalis V. Oswald and L. Ahart 1989-7-21 3868 Butte ca 1 mi w Jonesville (junction of Willow and Colby Creeks, on the w side of Colby creek, on the n side of Humbold Rd) 1487 Comment
  CHSC30360  Juncus capitatus J. D. Jokerst 1980-5-15 697 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Ridge. 487 Comment
  CHSC47539  Juncus capitatus Lowell Ahart 1980-5-4 2159 Butte Vernal pool, in an open field south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  RSA0118712  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CDA2697  Juncus diffusissimus L. Ahart 2000-7-18 8596 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  UC1562371  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CHSC65472  Juncus effusus subsp. pacificus Vernon Oswald 1988-5-25 3342 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In a ditch along Hwy 99 just n of the entrance to the ranch. 57 Comment
  SD192836  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, ca. 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, ca. 0.25 mile west of the Ponderosa Dam. 257 Comment
  CHSC78336  Juncus ensifolius Lowell Ahart 2000-6-27 8523 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  RSA726663  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte East side of Encina Grand Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 mile (air) west of Bloomer Hill. 809 Comment
  SEINET259921  Juncus leiospermus M. S. Taylor 1980-4-21 2561 Butte Table Mt ca. 8 mi N of Oroville 610 Comment
  CAS-BOT-BC110101  Juncus leiospermus var. ahartii Lowell Ahart 1973-4-15 192 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41441  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Along the sides and on the bottom of small vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC47565  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte On the bottom of vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC103739  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16706 Butte About 100 yards west of the fence, about 1/4 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC30361  Juncus leiospermus var. leiospermus J. D. Jokerst 1980-5-15 699 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Hwy. 487 Comment
  CHSC83947  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10042 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC59023  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  CHSC94396  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open 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
  CHSC74026  Juncus oxymeris B. Castro 1998-7-8 804 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. Along footpath. 929 Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC113109  Juncus tenuis Lowell Ahart 2013-11-13 19241 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC31444  Juncus tenuis L. Ahart 1980-9-10 2637 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC30434  Juncus triformis L. Ahart 1979-7-20 2474 Butte Along Bean Creek Road, near the south side of Little Bald Rock, ca. 15 mi NE of Oroville. 1100 Comment
  CHSC47573  Juncus uncialis Lowell Ahart 1978-4-10 1626 Butte On the bottom of vernal pools and swales, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC1495745  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte about 2 mi n and 0.5 mi e Honcut (Peter Ahart Ranch) 50 Comment
  CHSC97209  Juncus usitatus Lowell Ahart 2007-7-31 14400 A 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
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  UC577653  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte on Neal Road 8 mi se Chico 121 Comment
  CHSC39016  Keckiella breviflora var. glabrisepala J. D. Jokerst 1983-6-21 1817 Butte Common along the cliff edge of Table Mountain. North edge of Coal Cr Canyon. West side of North Table Mt. 304 Comment
  CAS-BOT-BC237821  Keckiella lemmonii Lowell Ahart 1983-7-24 4209 Butte On the road cutbanks at the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC61334  Keckiella lemmonii Lowell Ahart 1993-8-8 7152 Butte On the west branch of Pinkard Creek, about 1 3/4 miles north-west of the Sly Creek Dam. 1097 Comment
  RSA25679  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 0.7 mi. n.w. of Magalia at n.w. side of Magalia Reservoir. 732 Comment
  SD4941  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville, partial shade 1550 Comment
  UC600427  Kelloggia galioides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC45267  Kochia scoparia Vernon Oswald 1988-9-21 3702 Butte Ranch Arroyo Chico. Pine Creek Landing, Bidwell River Park, w of Chico. 41 Comment
  HSC102772  Koeleria gerardi J. P. Smith 2014-4-30 13838 Butte Along State Route 32. 389 Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  JEPS117272  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
  UC1594708  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  RSA754844  Lactuca serriola L. Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 mile east of Honcut, about 12 air miles south of Oroville. 32 Comment
  CHSC28482  Lagophylla glandulosa Robert Schlising 1979-8-17 3466 Butte Richvale vernal pools, 1/4 mi s jct Hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC30751  Lagophylla glandulosa M. S. Taylor 1980-8-30 3322 Butte Along creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC46947  Lagophylla glandulosa Lowell Ahart 1977-9-20 1584 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  SEINET3450773  Lamarckia aurea Unknown 2003-4-8 10051 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, northwest of Cherokee Road, about 1/8 miles northwest of the iron gate and fence 320 Comment
  JEPS119503  Lamium purpureum Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC104013  Landoltia punctata Lowell Ahart 2010-6-12 16806 Butte In 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
  CHSC90626  Lasthenia californica Jose Romero 1983-4-20 20 Butte Oroville Wildlife Area, junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  HSC32634  Lasthenia californica Dave Knorr 1974-4-20 133 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC13845  Lasthenia fremontii P. Haberkern 1974-4-21 26 Butte In field off the Skyway, ca. 0.5 mi e of Notre Dame Blvd, e of Chico. 60 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  UCD80080  Lasthenia fremontii CNPS SN Foothill Team 2005-4-12 SNFN 0077 e Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  RSA715918  Lasthenia gracilis L. P. Janeway 2005-3-10 8352 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
  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
  JEPS122007  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC50107  Lathyrus brownii Vernon Oswald 1990-5-2 4179 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. On forest-meadow border on the north side of Big Chico Creek ca. 200 ft east of the spring. 1292 Comment
  RSA21488  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi . no. of Durham. 46 Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CHSC23679  Lathyrus nevadensis M. S. Taylor 1976-4-27 1091 Butte On n side of Villas Rd, ca. 1/2 mi e of junc of Villas Rd and Cohasset Hwy, Cohasset. 762 Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  CHSC3992  Lathyrus sulphureus L. Lyons 1967-4-27 Butte On dry south slope of Cohasset Rd., 6.5 mi n. of the intersection with East Ave., ne Chico proper. 114 Comment
  SEINET10452337  Lathyrus sulphureus Lowell Ahart 1983-5-28 Ahart 4025 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC30039  Lathyrus tingitanus L. Ahart 1980-5-17 2304 Butte Around the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CAS-BOT-BC321780  Layia fremontii Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC2378  Layia fremontii R. Carter 1965-5-14 200 Butte Found 1.4 mi. W of Hwy. 40A on Old Chico Rd. along N side of road, these taken along fence. 51 Comment
  CHSC2831  Layia fremontii David Prall 1965-3-28 16 Butte In field east of Meridian Rd. 8 miles NE of HW. 99E north of Chico. 60 Comment
  CHSC6688  Layia fremontii Marilyn Lee 1968-3-15 120 Butte Along W. side of road leading to missle base, intersection on Kietter Road. Comment
  CHSC75252  Layia fremontii Jennifer Slater 1997-4-6 7 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 60 Comment
  CHSC51670  Leersia oryzoides M. Bailey 1990-10-9 417 Butte East Branch of Clear Creek, near intersection of the east and west branches of Clear Creek near Pentz Road, Butte College Campus. 85 Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  JEPS119756  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC215733  Lepechinia calycina L. P. Janeway 1989-5-29 6305 Butte Ca 200 ft. above Honey Run Road, 2.6 mi from Humbug Road, along dirt road/firebreak along powerline (3-wire, wooden pole) 274 Comment
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC104003  Lepidium didymum Lowell Ahart 2010-5-28 16740 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC47383  Lepidium nitidum Lowell Ahart 1973-3-7 158 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1 mile est of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CAS-BOT-BC12802  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 Butte Near Cambell Overlow, north of Oroville. Along Table Mountain Boulevard. 100 Comment
  CDA34697  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. Comment
  JEPS98288  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte 3 mi W of Honcut (E margin of road to Honcut Substation, on S side of Lower Honcut Road, about 200 ft E of Hwy 70) 27 Comment
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC58674  Leptochloa fusca subsp. uninervia M. Bailey 1991-6-6 Butte West side of Clark Road, ca 1 mi n of its jct with Pentz Road, in the vicinity of the jct of West Branch Lane. 76 Comment
  CHSC1275  Leptosiphon bicolor J. Gulick 1929-4-18 Butte Rifle range near Chico Creek. 106 Comment
  UCD73015  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
  CHSC40923  Leptosiphon bolanderi Lowell Ahart 1985-5-15 4984 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC106865  Leptosiphon filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC35111  Leptosiphon parviflorus R. Schlising; R. Banchero 1981-4-17 4037 Butte SE of Oroville and NE of Honcut, 1.1 mi S of jct Grubbs and Dunstone Roads, along latter. Comment
  JEPS122142  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC341739  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  UC1287396  Lessingia nana Willard Spence 1962-7-24 730 Butte 4 mi s Oroville (along alternate Rt. 40) Comment
  CAS-BOT-BC341789  Lessingia nemaclada John Thomas Howell 1962-6-16 37551 Butte Magalia 731 Comment
  CAS-BOT-BC341796  Lessingia nemaclada Rimo Bacigalupi; G. T. Robbins 1955-7-15 5305 Butte Rim of Butte Creek Canyon, along Chico-Paradise road, about 5 miles below and southwest of Paradise 304 Comment
  CDA8196  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. Comment
  SEINET10474782  Lessingia nemaclada Mary Susan Taylor 1975-9-19 Taylor 917 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC342060  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi west of Oroville 45 Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  CAS-BOT-BC342064  Lessingia virgata John Thomas Howell 1951-8-19 28151 Butte Hills west of Oroville Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  CHSC27244  Ligustrum henryi P. Moyer 1972-5-7 193 Butte CSUC Campus. Front old L.S. Bldg. between bike path and bike parking. 60 Comment
  CHSC111128  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte Lawn, on the south side of the paved park road, west of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  CHSC106061  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 -A Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 Comment
  CHSC106598  Ligustrum sinense L. P. Janeway; B. Castro 2010-6-4 9993 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. 75 Comment
  CAS-BOT-BC451600  Lilaea scilloides Lowell Ahart 1980-4-19 2091 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  CHSC31351  Limnanthes alba P. Lynn Lester 1980-4-14 21 Butte Ca. 3 yds e of Meridian Rd, ca. 0.1 mi n of Wookey Rd, ca. 0.9 mi s of Pine Cr, ca. 3 mi e of Hwy 99, ca. 7 mi nnw of Chico. 88 Comment
  RSA700274  Limnanthes alba T. W, Henrich 2004-12-4 s.n. Butte Chico, Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  SEINET10495213  Limnanthes alba Mary Susan Taylor 1978-5-6 Taylor 1622 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  JEPS119680  Limnanthes alba subsp. versicolor Lowell Ahart 2012-5-4 17986 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  CHSC38539  Limnanthes douglasii subsp. rosea Vernon Oswald 1983-3-5 117 Butte Upper Bidwell Park, Chico, near the s-e corner of the Omicron Enclosure. 85 Comment
  CAS-BOT-BC45928  Limnanthes floccosa subsp. californica A. A. Heller 1938-3-27 15002 Butte Near the Chico Airport in the Upper Sonoran Life Zone Comment
  CHSC67545  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3043 Butte Church site population N of Humboldt Rd., W of Bruce Rd., S of Hwy. 32. Comment
  RSA758833  Limnophila Peter Fritsch, Boni Cruz 2005-9-1 1790 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. North corner of Riceton Road and Hamilton Road. 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
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 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
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC133948  Linanthus pygmaeus Mrs. R. M. Austin Mar 1896 168 Butte e of Chico Comment
  SD147476  Lindernia dubia Lowell Ahart 1980-8-16 2577 Butte Near Honcut. 60 Comment
  SEINET10569962  Lindernia dubia var. anagallidea Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5226 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC33338  Linnaea borealis var. longiflora R. Banchero; R. Schlising 1980-6-23 263 Butte 1.6 mi SW of Sly Res., 1.8 mi N of the jct of Laporte Rd and 'Eagle Gulch Rd. 1066 Comment
  CHSC51023  Lipocarpha Lowell Ahart 1990-7-15 6566 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS95811  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  CHSC29729  Lithophragma bolanderi J. D. Jokerst 1980-4-21 623 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  UCD102715  Lithophragma bolanderi Michael A. Vincent; Ethan H. Freid 1998-4-6 8135 Butte Table Mountain. Comment
  CHSC50113  Lithophragma campanulatum Vernon Oswald 1990-5-12 4205 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC3405  Lithophragma parviflorum Alice L. Stoll 1966-3-26 81 Butte On Humbug Road near the Covered Bridge on way to Paradise. 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
  UC1713771  Lithophragma tenellum H. F. Copeland 1920-7-8 47 Butte <divide btw Butte, Plumas & Tehama Cos..acc to Roy Taylor from info from Duplicate coll. in Dudley Herbarium> 1828 Comment
  CAS-BOT-BC317344  Lithospermum californicum Lowell Ahart 1982-5-8 3423 Butte 3 miles NE of Forbestown along the road to the Forbestown Reservoir. 800 Comment
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  CHSC31593  Logfia gallica L. Ahart 1974-4-24 435 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC283387  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  CHSC4384  Lolium perenne M. M. Gregg 1966-5-21 170 Butte NW end of CSC campus: around the artificial ski jump. Chico. Comment
  CHSC40436  Lomatium marginatum Lowell Ahart 1985-5-15 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC42625  Lomatium marginatum var. marginatum Vernon Oswald 1986-4-3 1700 Butte Near the sw abutment of the Hwy 70 Bridge over the North Fork of the Feather River. Comment
  CHSC98573  Lomatium marginatum var. marginatum L. P. Janeway; B. Castro 2007-5-6 8970 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CHSC101147  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC8587  Lomatium utriculatum G. Smalley 1968-3-17 Butte Collected on south side of block faulted Chico Monocline, ca. 1 mile east of Bidwell Park golf club. 106 Comment
  CHSC48016  Lonicera conjugialis Vernon Oswald; Lowell Ahart 1987-7-1 3058 Butte Scotts John Creek 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1813 Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CAS-BOT-BC240447  Lonicera hispidula H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico Comment
  CAS-BOT-BC240685  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  CHSC10576  Lonicera interrupta Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  RSA726811  Lotus argophyllus var. fremontii L. Ahart 2007-5-29 13937 Butte About 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald rock, about 16 miles (air) northeast of Oroville. 586 Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC104836  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  SEINET10452008  Lotus purshianus Mary Susan Taylor 1980-6-14 Taylor 2873 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC176246  Lotus purshianus var. purshianus A. A. Heller 1913-10-7 11146 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC84016  Ludwigia palustris Lowell Ahart 2003-6-23 10312 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1562387  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte e. of Enterprise Boat Launch Area Lake Oroville (ca. 1/4 mi. n.w. of Enterprise Bridge across Lake Oroville) 243 Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  CHSC115452  Lupinus albifrons M. Sutton; C. Yasuda, S. Luse 2013-4-9 23 Butte Centerville Flumes. 350 Comment
  CHSC12112  Lupinus albifrons M. F. Smith 1972-4-30 1 Butte Abudant on Lumpkin Rd. directly across from Gold Flake Tavern, two (2) miles above Enterprise Bridge. 762 Comment
  UC727154  Lupinus albifrons var. albifrons A. A. Heller 1938-4-23 15050 Butte between the Las Plumas Road and the summit on Highway #24, 20 mi e Oroville; e of Oroville 762 Comment
  POM24999  Lupinus albifrons var. eminens C. C. Bruce 1892-05 2022 Butte Creek bottoms Comment
  JEPS97371  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte T26N R5E ca. center NW1/4 Sec. 4, 6100 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27) 1859 Comment
  CHSC87797  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 Comment
  SEINET5767545 Image available Lupinus arbustus subsp. silvicola A. A. Heller 1917-1 12853 Butte summit above Jonesville 2134 Comment
  CHSC90515  Lupinus bicolor Michael D. Mayes 1983-4-19 16 Butte Ca. 6 mi ese Chico s side of Butte Creek, 75 yds w of Covered Bridge. 152 Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS119589  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC323940  Lupinus latifolius subsp. longipes M. S. Taylor 1978-7-21 1822 Butte On S side of Oroville-Quincy Hwy, ca 14 mi N of Lake Madrone. 1463 Comment
  CDA27536  Lupinus microcarpus var. microcarpus T. C. Fuller 1958-4-15 5005 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  UC1076230  Lupinus nanus Herbert L. Mason 1927-5-10 3712 Butte ne of Oroville Table Mountain (Cherokee Mine); , Cherokee Mine Comment
  UCR237304  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18757 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CHSC942  Lupinus nanus var. vallicola M. Roberson 1956-5-2 Butte S.W. of Paradise, along Skyway. 426 Comment
  CHSC25291  Lupinus polyphyllus var. burkei M. S. Taylor 1977-7-15 1418 Butte On Humbug Rd between Covered Bridge and Paradise, ca. 3 mi s of Paradise. Comment
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SD48504  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobin's, ca. 7 miles NE of Butte-Plumas county line, mostly disturbed areas in sun 640 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  RSA0069567  Lupinus vallicola var. apricus Daisie Huang 2006-8-3 06080304 Butte Butte County. 1124 Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  JEPS114861  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC55304  Luzula parviflora Lowell Ahart 1991-8-25 6705 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) just south of Jordan Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC52031  Lycopus americanus B. Castro 1987-9-22 249 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  JEPS94765  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  UC1586530  Lycopus americanus Lowell Ahart 1991-9-14 6717 Butte ca. 2 mi. e. Honcut (between 2 large reservoirs, Joie Osgood Ranch); Joie Osgood Ranch 45 Comment
  CHSC105263  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 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
  CHSC47441  Lythrum hyssopifolia Lowell Ahart 1975-7-19 902 Butte Growing along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC75999  Lythrum hyssopifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8169 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  UC179655  Madia elegans A. A. Heller 1914-8-13 11684 Butte hills 8 mi n of Oroville Comment
  CHSC102734  Madia elegans subsp. densifolia Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 203 Comment
  CHSC25454  Madia elegans subsp. densifolia Marc Hayes; Warner 1977-9-12 103 Butte Along the middle branch of Clear Creek on the Butte College Campus, ca. 15 mi se of Chico. 82 Comment
  CHSC76036  Madia elegans subsp. elegans G. F. Hrusa; T. D. Wilfred 1996-7-9 13172 Butte Sierra Nevada. Plumas National Forest. At S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1100 Comment
  JEPS104323  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the e side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  CHSC33144  Madia elegans subsp. vernalis J. D. Jokerst 1981-5-11 1309 Butte Top of Doe Mill Ridge. 457 Comment
  CHSC51856  Madia elegans subsp. vernalis L. P. Janeway 1988-6-5 2727 Butte Cyn of Chico Cr ca 3/4 mi NE of the end of Upper Park Rd. 259 Comment
  CHSC116988  Madia exigua Lowell Ahart 2016-6-4 20936 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC86972  Madia gracilis L. P. Janeway; John Hunt 2003-6-12 7825 Butte Northern Sierra Nevada Foothills. At Lime Saddle; about 100 m northeast of junction of the campground road and Lime Saddle/Nelson Bar Road; west side of West Branch Feather River arm of Lake Oroville. 305 Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  SEINET10965685  Magnolia grandiflora Mary Susan Taylor 1974-5-20 Taylor 253 Butte Chico. Comment
  CHSC28499  Maianthemum racemosum M. S. Taylor; J. Jokerst 1979-7-21 2152 Butte Along trail below Humboldt Peak, on Humboldt Summit. 2154 Comment
  JEPS124029  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CHSC37279  Malva nicaeensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4360 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  JEPS104135  Malva nicaeensis Lowell Ahart 2003-5-9 10121 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC106871  Malva parviflora Lowell Ahart 2011-5-9 17352 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC63257  Malva parviflora L. Ahart 1994-3-30 7277 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC118889  Marah fabacea Robert A. Schlising 1963-6-7 2621 Butte Foothills; Cohasset; roadside. Comment
  CHSC101673  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC70832  Marah watsonii Vernon H. Oswald 1998-4-12 8905 Butte Upper Bidwell Park (new addition), South Rim Trail ca. 100 ft. west of Pine Trail. 396 Comment
  CDA42742  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC101327  Matricaria discoidea Lowell Ahart 2009-4-22 15568 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC81219  Matricaria discoidea J. Trizzino 2001-4-25 61 Butte Chico Avenue, between Crouch Avenue and Lone Pine Avenue. 45 Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  RSA755638  Medicago arabica L. Ahart 2009-5-15 15712 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET12155170  Medicago hispida P. L. Ricker 1912-1 3963 Butte Chico Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 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
  CHSC42528  Medicago lupulina Lowell Ahart 1987-5-6 5524 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
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC70851  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  RSA0060800  Medicago praecox Lowell A. Ahart 2012-4-9 17836 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2.25 miles (air) northeast of Chico. 142 Comment
  SEINET10452592  Medicago praecox Lowell Ahart 1983-4-10 Ahart 3924 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  SEINET12155151  Medicago scutellata P. L. Ricker 1912-1 3966 Butte Chico Comment
  CHSC3335  Melaleuca leucadendra Robert L. Smith 1966-3-3 25 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CHSC82472  Melica aristata Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9745 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UCD67024  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  UCSB63913  Melica aristata Ahart, Lowell 1997-8-1 Butte South side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; T24N, R5E, northwest 1/4 Section 18 1432 Comment
  CAS-BOT-BC269386  Melica californica Clarence R. Quick 1964-7-9 64 -64 Butte North of Jarbo Gap Comment
  CHSC8251  Melica californica B. Hamilton 1969-4-17 16 Butte Found near Horseshoe Lake in Bidwell Upper Park. Comment
  JEPS113256  Melica californica Lowell Ahart 2007-5-29 13924 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northea 598 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
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  UCD87136  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia. 731 Comment
  CHSC115277  Melica californica var. californica Lowell Ahart 2015-4-30 20122 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  CHSC41168  Melica harfordii L. P. Janeway; Gary Benson, Randy Harrison 1984-9-12 Butte Plumas N.F. ECOS plot 11-052. On ridge between Concow Res and N Fk Feather R. 865 Comment
  CAS-BOT-BC262457  Melica subulata E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  CHSC5965  Melilotus albus M. MacArthur 1968-6-17 150 Butte SE side Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  POM27431  Melilotus albus C. C. Bruce 1897-04 1850 Butte Butte Creek Comment
  SEINET11268221  Melilotus officinalis Lowell Ahart 2001-6-13 8817 Butte On the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Managment Area, about 4 miles (air) southwest of Gridley.; 0 23 Comment
  SEINET10498158  Mentha arvensis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 A Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  SEINET10498160  Mentha arvensis Mary Susan Taylor 1975-8-31 Taylor 885 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
  CHSC25275  Mentha pulegium K. R. Stern 1977-6-25 Butte Chico. Comment
  CHSC42940  Mentha spicata Lowell Ahart 1987-7-12 5819 Butte On a sand bar along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 64 Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte About 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  UC1564783  Mentzelia dispersa V. Oswald and L. Ahart 1989-6-27 3817 Butte ca 3.3 m (air) e Jonesville (Ridge east of Scotts John Creek); Montane Chaparral in Red Fir Forest; T26N R5E ne/S16 2042 Comment
  CHSC11074  Mentzelia laevicaulis Lowell Ahart 1968-7-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC26707  Mentzelia laevicaulis M. P. Hayes 1977-10-23 143 Butte In Lindo channel in large gravel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CAS-BOT-BC428755  Micranthes californica Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC45980  Micranthes californica Lowell Ahart 1974-3-8 312 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC45981  Micranthes integrifolia Lowell Ahart 1975-3-18 712 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120079  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the of homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico. Comment
  UCD102751  Micranthes integrifolia E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  SEINET10475176  Micropus californicus Mary Susan Taylor 1974-4-30 Taylor 195 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC40549  Micropus californicus var. californicus Ahart; Jokerst 1985-3-24 4852 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  CHSC38383  Microseris acuminata Vernon Oswald 1983-4-4 270 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft e of the power lines. 249 Comment
  SEINET3167292  Microseris acuminata R. W. Spellenberg, N. Zucker 2010-4-16 14151 Butte 14 km N of Chico along Hwy. 99 at Hamilton Nord Cana Hwy. 55 Comment
  SEINET11807772  Microseris douglasii subsp. tenella Unknown 1985-1 4888 Butte Peter Ahart Ranch, about 2 mi N & 2 mi E of Honcut, aobut 12 mi S of Oroville 50 Comment
  CHSC2400  Microsteris gracilis R. Carter 1965-3-9 152 Butte Found on Old Cherokee Rd., Oroville, .8 mi N of intersection with Oregon Gulch Rd. On W bank above road. 243 Comment
  SD87566  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
  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
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  POM43817  Mimulus bicolor R. M. Austin 1883-05 15 Butte Lomo. Comment
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  CHSC117442  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, 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
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  SEINET12269860  Mimulus guttatus Unknown s.n. Butte no further locality Comment
  JEPS4705  Mimulus microphyllus A. A. Heller 1938-5-4 15060 Butte e Chico (near covered bridge over creek); Butte Creek 106 Comment
  RSA4110  Mimulus moschatus var. sessilifolius E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  POM43820  Mimulus tricolor C. C. Bruce 1897-05 2107 Butte [No location data on label] Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  RSA4433  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  UCD98350  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte south side of the Oak Grove Cemetary, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 Comment
  CHSC52180  Mollugo verticillata Pauleen Broyles 1987-5-21 1048 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Scattered along banks of Singer/Pine Creek. 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
  CAS-BOT-BC435074  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 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
  SEINET10865494  Monardella Mary Susan Taylor 1978-7-19 Taylor 1751 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  UCSB63980  Monardella douglasii Jokerst, James; Castro, Barbara 1992-5-19 Butte Powerline site in the unnamed canyon N of Nugen Canyon; on the S side of Neal Rd; near the Butte County Sanitary Landfill: T21N R2E NEW NE'/i Sect. 14; Valley and Foothill Grassland within Blue Oak Woodland; Cascade Range Foothills 83 Comment
Read comments Jul 19 2018
  RSA718088  Monardella odoratissima subsp. glauca L. Ahart 2006-7-16 12960 Butte north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1436 Comment
  CHSC52036  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-1 271 Butte Near edge of Retson Rd e of Stirling City. 1091 Comment
  CHSC52213  Monardella sheltonii L. P. Janeway 1988-6-25 2888 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  JEPS107530  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  RSA712788  Monardella villosa subsp. sheltonii L. P. Janeway 1994-6-23 4672 Butte Pinkston Canyon Road about 400 feet east of Concow Road. 564 Comment
  CDA2665  Monochoria vaginalis T. C. Fuller 1959-10-2 3140 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  CHSC98947  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-8 14717 Butte Below the high water line of Lake Oroville, about 150 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CAS-BOT-BC233762  Montia parvifolia Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC3376  Morus alba Robert L. Smith 1966-3-30 52 Butte Paradise. Comment
  CAS-BOT-BC260536  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC51671  Muhlenbergia mexicana M. Bailey 1990-10-9 415 Butte In the vicinity of the intersection of the East and West Branches of Clear Creek, near Pentz Road on the Butte College campus. 85 Comment
  SACT001603  Muhlenbergia repens Herbert Copeland 1929-6-9 Butte In dry open places. 1500.0 Comment
  CAS-BOT-BC274932  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC45215  Muhlenbergia rigens Lowell Ahart 1977-10-19 1602 Butte On the banks 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
  CHSC106872  Myosurus minimus Lowell Ahart 2011-5-2 17349 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 58 Comment
  CDA7128  Myriophyllum aquaticum L. P. Janeway, B. Castro, L. Archambault 2006-1-16 8554 Butte Sacramento Valley; Gray Lodge Wildlife Area; between the main waterfowl viewing parking area and the headquarters area. Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UC1101487  Myriophyllum hippuroides Herbert L. Mason and Verne Grant 1946-8-14 13014 Butte Canal near big pond on Sacramento Outing Club, Butte Sink. 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
  SFV1503  Nasturtium officinale M. L. Vincent 1962-4-18 210 Butte Butte Creek Canyon near Humbug Road. 1 mile east of old covered bridge. Comment
  UC600661  Navarretia capillaris E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek (Jonesville); , btw Jones Creek and Willow Creek 1700 Comment
  UCD48390  Navarretia divaricata H. F. Copeland 1930-7-28 s.n. Butte Jonesville, Butte County. Beside South Willow Creek in shady flat. 1828 Comment
  JEPS117331  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west 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
  CHSC28797  Navarretia filicaulis J. D. Jokerst 1978-6-22 151 B Butte Adjacent to Jordan Hill Rd. Comment
  RSA755415  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell park, about 10 miles northeast of Chico. 399 Comment
  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
  SEINET10496826  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1611 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS107909  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-7-13 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 759 Comment
  UCSB63838  Navarretia leptalea Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  HSC85999  Navarretia leucocephala J. Hunter 1986-3-30 40 Butte 1 km E of Chico, 50 m S Hwy. 32 75 Comment
  CAS-BOT-BC230333  Navarretia leucocephala Robert F. Holland 1976-4-13 274 Butte W side of State Highway 99, 1 mile N of junction with State Highway 162, E of Richvale Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  RSA304498  Navarretia leucocephala subsp. leucocephala Barbara Ertter, Jeffrey L. Strachan 1980-5-5 3256 Butte Peter Ahart Ranch ca. 1.5 miles northeast of Honcut between Oroville and Marysville 30 Comment
  JEPS117332  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles 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 55 Comment
  CDA40109  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte South edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  RSA13527  Navarretia viscidula H. F. Copeland 1932-6-24 s.n. Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road Comment
  CHSC46823  Nemacladus capillaris R. A. Schlising; R. Banchero 1981-6-16 4083 Butte Cohasset, 0.3 mi S of junction with Vilas Road, on Cohasset Road. 646 Comment
  SEINET12331843  Nemacladus capillaris Unknown 1985-1 5059 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi north-east of Feather Falls 975 Comment
  SEINET10840525  Nemacladus interior Brooks BROOKS s.n. Butte Enterprise, Type location Comment
  SEINET3156476  Nemophila exilis H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC24764  Nemophila heterophylla P. J. Welch 1976-4-12 18 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Creek Hwy. (Hwy.32); ca. 10.1 mi ene of Chico. 304 Comment
  UC196271  Nemophila heterophylla A. A. Heller 1914-3-19 11216 Butte Canyon of Big Chico Creek 76 Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  UCSB63718  Nemophila heterophylla Blankenheim, Wendy 1991-4-16 Butte 150 yds. S of Butte Creek; .5 mi. W of Covered Bridge; 6.4 miles ESE of Chico; T. 22N., R. 2E.; sec. 25-midpoint near S boundary; Hamlin Canyon Quad.; 7.5 minute series 121 Comment
  CHSC10570  Nemophila menziesii Lowell Ahart 1965-4-15 Butte Swedes Flat Road. 60 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC38462  Nemophila pedunculata Vernon Oswald 1983-4-25 385 Butte Upper Bidwell Park, Chico, on the north rim ca 500 ft e of the power lines. 249 Comment
  UC600404  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte neighborhood Jonesville (near head of So. Willow Creek); So Willow Creek, neighborhood of Jonesville 1828 Comment
  SEINET10497063  Nemophila spatulata Mary Susan Taylor 1981-5-22 Taylor 3794 Butte T23N R5E nw/nw sec 30, Pulga quad. Ridge running SE from Flea Mt, both sides of Flea Mt Rd, ca. 1/4 air mi E of Flea Mt, ca. 5 air mi E of Magalia. Yellow Pine Forest; 4000 ft. 1219 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  JEPS87441  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  UCD110233  Notholithocarpus densiflorus var. echinoides Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  POM195804  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CHSC108854  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CAS-BOT-BC71181  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CHSC43597  Oreostemma alpigenum var. andersonii Vernon H. Oswald 1983-7-6 830 Butte Near Humboldt Rd. 3.4 mi NE of Butte Meadows. 1432 Comment
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  CAS-BOT-BC499847  Orobanche fasciculata A. A. Heller 1928-4-30 14538 Butte Along the Neal Road about 3 mi below Paradise Comment
  JEPS124174  Orobanche uniflora var. uniflora Lowell Ahart 2015-3-14 19955 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SEINET10500398  Orobanche vallicola Mary Susan Taylor 1974-10-11 Taylor 330 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  SEINET10549646  Orthocarpus attenuatus Mary Susan Taylor 1976-3-9 Taylor 1024 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  RSA325942  Orthocarpus campestris L. Ahart 1984-4-25 4585 Butte Peter Ahart Ranch, 2.5 miles Ne of Honcut, 12 miles S of Oroville, Valley Grassland. 50 Comment
  POM286324  Orthocarpus erianthus Lyman D. Benson 1935-3-27 6366 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  SEINET12318313  Orthocarpus purpurascens S. M. Leary 1978-1 14 Butte North Table Mountain, ca 6.5 mi N of Oroville, ca 2 mi NNW of Cherokee Rd 396 Comment
  UCD23268  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station. Comment
  SEINET10925598  Oryzopsis miliacea James D. Jokerst, Lowell Ahart 1981-9-26 Jokerst 1478 Butte Along dirt road N of Big Chico Cr ca 200 m E of the Sacramento River. Riparian Woodland. 30 Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC3541  Oxalis pes-caprae John Francis 1966-3-19 69 Butte On hillside S. of covered bridge, Honey Run. Comment
  CHSC40303  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 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
  UC1026483  Panicum acuminatum var. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 mi w Pulga; Sierra Nevada, w of Pulga 365 Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  JEPS103328  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CDA6386  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills; Northwest side of Highway 10, 0.6 km southwest of Pentz Road. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  SEINET10507543  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC38840  Paspalum distichum Vernon Oswald 1983-6-27 776 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  SEINET10836216  Paspalum urvillei Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4049 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-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of 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
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC43162  Pedicularis attollens R. A. Schlising 1980-7-8 3866 Butte N of Butte Creek and several mi N of Butte Meadows near Cherry Hill Campground in large meadow. Comment
  UC196051  Pedicularis attollens A. A. Heller 1914-7-23 11609 Butte at Chico Meadows Chico Meadows; Sierra Nevada 1219 Comment
  POM44028  Pedicularis aurantiaca C. C. Bruce 1898-05 2419 Butte Paradise. Comment
  SFV71  Pellaea andromedifolia M. L. Vincent 1961-3-26 8 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  SEINET10529811  Pellaea mucronata Mary Susan Taylor 1981-4-5 Taylor 3482 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10867065  Pellaea mucronata Mary Susan Taylor 1979-3-19 Taylor 1935 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC44074  Pellaea mucronata var. californica L. P. Janeway 1987-6-20 2268 Butte Top of Lumpkin Ridge 0.6 mi south of the Feather Falls-Lumpkin Ridge Rd. 1249 Comment
  CHSC60942  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte Jackass Flat, Mooreville Ridge, about 1 air mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA0041920  Penstemon Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  POM219260  Penstemon gracilentus H. F. Copeland 1930-7-26 1375 Butte Jonesville. Canyon of Butte Creek. 1524 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  UCD124230  Penstemon heterophyllus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 13 miles east of Chico. 365 Comment
  RSA3797  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  UC887074  Penstemon heterophyllus var. purdyi A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road 3 mi from Chico; 3 mi from Chico Comment
  SBBG7173  Penstemon laetus H. and M. Dearing 1938-6-20 2049 Butte 20 mi NE of Chico Comment
  CHSC95079  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS6628  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte along the Feather River Highway 25 mi from Oroville; along the Feather River Highway 25 mi from Oroville Comment
  NY604517  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25693 Butte Route 24, along Feather River, above Pulga 457.2 Comment
  POM43769  Penstemon laetus var. leptosepalus C. C. Bruce 1898-06 2415 Butte Forest Ranch. Comment
  CHSC105203  Penstemon neotericus B. Castro; L. P. Janeway 1999-8-1 1023 Butte NE slope of Snow Mtn, ca 0.3 mi NNE of top, and ca 0.5 mi SE of Summit Lake. 2017 Comment
  SBBG28898  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte above Jonesville 1900 Comment
  RSA0049655  Penstemon personatus Dean Wm. Taylor, Bryan Waylan 2011-8-3 21139 Butte logging road ca. 1 air mile North of Bald Mountain lookout (watershed Middle Fork Feather River) 1590 Comment
  LA209562  Penstemon procerus E. B. Copeland; 1931-6-20 Butte Jonesville, Butte Creek 1500.0 Comment
  CHSC44729  Penstemon rydbergii R. Banchero 1980-6-26 266 Butte Chico Meadows, 0.95 mi N of the jct of Humboldt Rd and the Skyway. 1316 Comment
  CAS-BOT-BC239447  Penstemon rydbergii var. oreocharis Frank W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road Comment
  UC436308  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte Jonesville by Butte Creek, Jonesville (on gravel bar by Butte Creek) 1500 Comment
  CHSC115451  Pentagramma pallida M. Sutton; C. Yasuda 2013-3-10 13 Butte Feather Falls Trail. 1069 Comment
  CHSC32143  Pentagramma pallida L. Ahart 1975-1-4 694 Butte From Honcut go n to Cox Lane and then e to second pole line, follow PGE pole line s to the 4th pole, then go e to the large rocks; 2 mi n and 1 mi e of Honcut. 91 Comment
  CAS-BOT-BC77137  Pentagramma triangularis subsp. semipallida Peter H. Raven 1954-4-17 6620 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC31010  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-10-6 3352 Butte S side of Hwy 70 ca. 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  SEINET12320811  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-1 2390 Butte Macabes Creek canyon, ca 100 ft E of Lumpkin Rd, ca 2.5 mi N of junction with Forbestown Rd 396 Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CHSC40225  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1855 Butte Humbug Rd. near Willow Creek culvert. 1853 Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CDA14087  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13971 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC45379  Persicaria hydropiperoides Vernon Oswald 1983-10-10 1063 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. Growing in shallow water along the edges of Tyler Slough at the Indian Fishery located at the jct. of W. Sacramento Ave. and River Rd. Comment
  CHSC94597  Persicaria lapathifolia Lowell Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  SEINET10546874  Phacelia Mary Susan Taylor 1979-10-5 Taylor 2229 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  JEPS50779  Phacelia heterophylla subsp. virgata Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9283 Butte immediately w of Arch Rock Tunnel (along Feather River Highway); Feather River Highway 487 Comment
  UC1228322  Phacelia heterophylla subsp. virgata L. R. Heckard 1952-6-20 320 Butte road bank about 2 mi above (ne) Pulga; canyon of the Feather River Comment
  CHSC39109  Phacelia imbricata Lowell Ahart 1983-6-26 4117 Butte About 15 mi ne of Oroville; about 2 mi se of intersection of Oroville/Quincy Highway and Ponderosa Way; on dry, red, rocky soils along Ponderosa Way. 500 Comment
  SEINET10969177  Phacelia imbricata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4654 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
  CHSC30065  Phacelia purpusii R. A. Schlising; R. Banchero 1980-6-17 3730 Butte N of Magalia and De Sabla, along Skyway ca 1.5 mi SW of Lovelock. 780 Comment
  CHSC46199  Phacelia purpusii L. P. Janeway 1988-6-16 2802 Butte Southeast-facing outcrop above Butte Cr; along road in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  UC196300  Phacelia purpusii A. A. Heller 1914-6-22 11486 Butte edge of n slope Little Summit 1463 Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CAS-BOT-BC250704  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC38841  Phalaris paradoxa Vernon Oswald 1983-5-31 591 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. opposite the Parking Area G (0.1 mi w of the power lines). 97 Comment
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  CAS-BOT-BC77369  Philadelphus lewisii C. C., Mrs. Bruce 1897-5-1 1785 Butte Little Chico Creek Comment
  UCD89627  Phleum pratense August L. Hormay 1929-6-28 s.n. Butte Chico Meadows. Comment
  SD3827  Phlox caespitosa E. B. Copeland 1931-6-19 Butte Jonesville, on and below crags west of The Summit 2100 Comment
  SEINET12230319  Phoradendron bolleanum M. S. Taylor, Oswald, V. 1984-1 5396 Butte at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  UC1194603  Phoradendron densum Del Wiens 1960-6-15 2727 Butte near Magalia (just n. of train depot) Comment
  SEINET10492814  Phoradendron juniperinum var. libocedri Mary Susan Taylor 1976-2-22 Taylor 997 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  JEPS120060  Photinia Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  SEINET10546611  Physalis acutifolia Mary Susan Taylor 1980-7-6 Taylor 3060 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
  CHSC113119  Physalis lancifolia Lowell Ahart 2013-11-18 19285 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC52369  Physocarpus capitatus L. P. Janeway 1989-5-17 3251 Butte Near rd to Forbestown Diversion Dam 4.1 mi from Forbestown Rd. 640 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
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  CAS-BOT-BC78447  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  UCD134478  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville. 1550 Comment
  RSA572043  Pinus contorta var. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville. 1524 Comment
  CHSC24440  Pinus lambertiana M. S. Taylor 1976-2-22 999 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CHSC34785  Piptatherum miliaceum L. Ahart 1981-9-26 3207 Butte Near the Sacramento River s of the washout, ca. 6 mi w of Chico. 40 Comment
  CHSC43585  Pistacia atlantica Vernon Oswald 1987-5-6 2373 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 68 Comment
  HSC97350  Pistacia vera J. P. Smith, J. O. Sawyer 2007-9-2 12419 Butte State Route 45 near its junction with Fruitvale Road. Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10529815  Pityrogramma pallida Mary Susan Taylor 1979-11-15 Taylor 2288 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CHSC26781  Plagiobothrys austiniae M. S. Taylor; M. Hayes 1978-4-14 1569 Butte In vernal pools on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College Campus. 30 Comment
  CHSC92567  Plagiobothrys austiniae L. P. Janeway 2005-3-10 8355 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UCD80148  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-14 SNFN 0033 a Butte Private Rock Ranch. Plot is located in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  SEINET10497369  Plagiobothrys fulvus var. campestris Mary Susan Taylor 1980-4-16 Taylor 2495 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
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  CHSC44479  Plagiobothrys glyptocarpus Lowell Ahart 1988-5-12 5994 Butte On the bottom of a small wash, in a mined over area, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC60966  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC228254  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC67186  Plagiobothrys scriptus James D. Jokerst 1989-4-8 3091 Butte North Table Mtn., N and adjacent to Cherokee Rd. at E edge of mesa. Roadside area next to metal corral. Comment
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC46773  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-4-27 1670 Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CDA40658  Plagiobothrys stipitatus var. micranthus T. C. Fuller 1962-5-17 8714 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  SEINET10870088  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10935850  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-5-12 Ahart 3972 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
  CHSC43553  Plagiobothrys tenellus Lowell Ahart 1978-4-19 1652 Butte Along the trail, about 1/2 mile south of Feather Falls, about 5 miles north of the town of Feather Falls. 548 Comment
  UC725415  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte e Chico; Stilson Canyon 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
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  JEPS118250  Plantago coronopus Lowell Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  CHSC108798  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte Vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC116698  Plantago elongata Lowell Ahart 2016-5-15 20836 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  JEPS107357  Plantago elongata Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11663 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  CHSC33394  Plantago erecta C. W. Dawson 1978-3-29 9 Butte 1.5 mi. s of Paradise and junction of Pearson Road and Clark Road (Hwy. 191). 800 ft. nnw of roadway at top of ridge. 335 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  UC1125624  Plantago erecta C. G. Albertus 1933-5-29 5 Butte 1.5 mi n Wick; Chico Quad. 60 Comment
  CHSC107433  Plantago lanceolata L. P. Janeway 2011-6-29 10407 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC34246  Plantago lanceolata M. S. Taylor 1981-8-15 4180 Butte Weed lot on n side of the Skyway, Inskip. 1463 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CHSC99761  Plantago major Lowell Ahart 2008-7-23 15145 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS114771  Plantago major Lowell Ahart 2008-7-23 15145 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC52186  Platanus racemosa Pauleen Broyles 1987-5-21 1054 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Occasional along Singer and Pine Creeks. Comment
  CHSC1212  Platystemon californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  RSA325088  Plectritis ciliosa M. S. Taylor 1981-4-5 3491 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  UC890146  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  POM68797  Plectritis macrocera subsp. macrocera C. C. Bruce 1897-04 1882 Butte Little Chico. Comment
  CHSC86140  Pleuricospora fimbriolata John Dittes 2002-6-29 628 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  UC463030  Pleuricospora fimbriolata E. B. Copeland 1931-7-30 Butte Jonesville Comment
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC6626  Poa annua M. MacArthur 1968-6-13 325 Butte SE yard of Building V, Chico State College campus. 60 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
  SEINET10593496  Poa annua Isle 1969-4-18 ISLE 352 Butte About 30 yards S. of the Pentz-Magalia HW-Pentz Road intersection off the W. side of the Pentz-Magalia HW. 213 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
  CAS-BOT-BC255973  Poa pratensis Lowell Ahart 1980-5-17 2275 Butte 1/2 mile south-east of Hurleton 600 Comment
  CDA14065  Poa pratensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13712 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common to dominant in wet meadow drained to N by serpentine outcrop, but not on serp. Perennial, rhizomatous. Comment
  CHSC41282  Poa pratensis S. C. Morey 1983-7-21 501 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte 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. Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC38846  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-9 463 Butte Upper Bidwell Park, Chico, along the Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  POM218975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  RSA21174  Poa secunda C. B. Wolf 1937-5-14 8666 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CHSC25105  Poa secunda subsp. secunda R. W. Wallstrum 1970-3-26 8 Butte Lower side of dam at Magalia Reservoir, 8 mi from Paradise, on s side of road. 609 Comment
  CHSC59850  Poa secunda subsp. secunda R. E. Preston 1982-3-6 187 Butte At boundary of Upper Bidwell Park, n of Horseshoe Lake, Chico. 188 Comment
  HSC39887  Poa secunda subsp. secunda J. P. Smith 1973-3-22 5932 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UC1988910  Pogogyne douglasii Robert F. Hoover 1936-5-20 1155 Butte ten miles southwest of Oroville Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  CHSC7065  Pogogyne zizyphoroides L. Kimbley 1969-5-4 5 Butte Ca. 300 yds. ne of Chico Airport, 4 mi n of Chico. Comment
  JEPS117265  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  RSA0022166  Pogogyne zizyphoroides L. S. Rose 1963-6-5 6314 Butte 3 mi. w of Palmero 46 Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico 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
  SEINET12205532  Polygala cornuta Unknown 1985-1 5081 Butte About 2-1/2 mi NE of Forbestown 564 Comment
  CAS-BOT-BC167548  Polygala cornuta var. cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC50680  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte On the north edge of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CHSC103695  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom 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 miles (air) northeast of Chico. 395 Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UCD80666  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-2 SNFN 0195 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CAS-BOT-BC109153  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  CAS-BOT-BC414369  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  CHSC11918  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  UC600496  Polygonum douglasii subsp. douglasii H. F. Copeland 1920-7-24 318 Butte meadow by Colby Creek; Jonesville Comment
  UC1562376  Polygonum hydropiper Lowell Ahart 1990-5-25 6493 Butte about 1/8 mi nw Enterprise Bridge across lake (e of Enterprise Boat Launch Area, below high water line of lake); Lake Oroville 259 Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  JEPS96004  Polygonum lapathifolium Vernon H. Oswald and Lowell Ahart 1996-5-27 7665 Butte U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and Sacramento River (seasonal marsh on s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  JEPS94311  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain) 1524 Comment
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 Comment
  JEPS121957  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC1594696  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte Coon Hollow; sides of snow lake on s side, about 2 air mi ne of Philbrook Reservoir 1737 Comment
  CAS-BOT-BC419895  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC1563289  Polygonum punctatum Lowell Ahart 1990-10-3 6620 Butte about 1/4 mi ne Canyon Creek Bridge across lake; Lake Oroville, East Fork of Canyon Creek 259 Comment
  CDA13261  Polygonum spergulariiforme G. F. Hrusa, T. D. Wilfred 1996-7-8 13105 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  CAS-BOT-BC71859  Polypodium californicum Bruce Hamren 1978-4-24 13 Butte West Branch Feather River, Cherokee Quadrangle 280 Comment
  SEINET10530407  Polypodium californicum Mary Susan Taylor 1973-1 Taylor 54 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC34240  Polypodium calirhiza M. S. Taylor 1981-5-7 3633 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC39233  Polypodium calirhiza M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5215 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CAS-BOT-BC232966  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  CAS-BOT-BC233058  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC233062  Polypogon interruptus A. A. Beetle 1941-6-27 1745 Butte Near Lomo, 13 miles W of Chester, near road to Chico Creek Comment
  CDA2331  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte Near Lomo, 13 miles west of Chester, near road to Chico Creek. 0 Comment
  CHSC102157  Polypogon interruptus Lowell Ahart 2009-5-30 15786 Butte On wet soil, along a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC108141  Polypogon interruptus Lowell Ahart 2011-10-29 17726 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
  CHSC30550  Polypogon interruptus J. D. Jokerst; M. S. Taylor 1980-9-11 635 Butte Adjacent to rice fields, 50 ft N of Goodspeed-Watt Rd, 0.2 mi N of its jct with Nelson Rd (ca 6 mi S of Chico). Comment
  CHSC37109  Polypogon maritimus L. Ahart 1982-10-15 3888 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  UCD91194  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  SEINET10658300  Polypogon maritimus A. Arthur Heller 1914-5-13 Heller s.n. Butte Between Durham and Nelson Comment
  CAS-BOT-BC232573  Polypogon monspeliensis Lowell Ahart 1987-5-27 5698 Butte On a sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC45743  Polypogon monspeliensis S. A. Conley 1986-6-16 40 Butte 2.1 mi. e of Oroville on hwy 162. Along rd. Comment
  CHSC66177  Polypogon monspeliensis Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  RSA726855  Polypogon viridis L. Ahart 2007-6-3 13977 Butte On the west side of Jordan Hill Road, about 1.5 miles northwest of Concow Creek, about 1.5 miles west of Concow Reservoir. 358 Comment
  SEINET10508535  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4237 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
  CHSC32626  Polystichum imbricans M. S. Taylor; L. Hanson 1981-4-2 3470 Butte S side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  SEINET10834136  Polystichum imbricans Mary Susan Taylor 1980-10-6 Taylor 3355 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  JEPS87565  Polystichum imbricans subsp. curtum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  SD149211  Polystichum scopulinum Lowell Ahart, Vernon Oswald 1987-7-5 3189 Butte Rock outcrops skirting the north flank of Humboldt Peak on the Butte-Plumas county border, south of the Pacific Crest trail. 2070 Comment
  UCD100118  Portulaca oleracea Malcolm A. Nobs; S. Galen Smith 1949-6-29 1087 Butte Butte Creek, on road from Biggs to Princeton. Comment
  CDA802  Potamogeton diversifolius L. Ahart 1999-6-12 8089 Butte Shallow water of a pond on the W side of the dam, large reservoir N of large reservoir N of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) W of the entrance gates along the W side of Cherokee Road, about 7 miles (air) N of Oroville. Comment
  CAS-BOT-BC454087  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC50559  Potentilla bruceae Vernon Oswald 1990-7-3 4342 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. Meadow. 1950 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CAS-BOT-BC539448  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  CHSC63976  Proboscidea louisianica B. Castro 1987-8-6 202 Butte E side of Chico Cyn as it heads NE. 91 Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA27702  Prosopis glandulosa var. torreyana L. Ahart, M. G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  UCD125325  Prunella vulgaris L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  POM70065  Prunella vulgaris var. lanceolata C. C. Bruce 1897-06 1975 Butte Iron Canyon. Comment
  RSA283335  Prunella vulgaris var. lanceolata Lyman Benson 1932-7-28 3966 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC101815  Prunella vulgaris var. vulgaris Lowell Ahart 2009-6-12 15839 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC38930  Prunus cerasifera Vernon Oswald 1983-2-23 93 Butte Upper Bidwell Park, Chico, at the Salmon Hole Parking Area (1.4 mi e of the power lines). Along an intermittent stream. 158 Comment
  CHSC38931  Prunus cerasifera Vernon Oswald 1983-6-27 777 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CAS-BOT-BC356393  Pseudognaphalium beneolens Lowell Ahart 1983-9-17 4435 Butte Below the dirt road and about 2 1/2 miles south of Stirling City 1100 Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC100525  Pseudognaphalium thermale Lowell Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC33644  Pseudognaphalium thermale M. Merryman; R. Banchero 1979-9-2 25 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. Roadside fill. 950 Comment
  CHSC58903  Pseudostellaria jamesiana Lowell Ahart 1992-7-21 6815 Butte Under large fir trees, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  RSA4440  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  UC478521  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC45895  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1978-5-1 1684 Butte On the bottom of a vernal pool, 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
  CHSC60960  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1993-5-10 6933 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD80116  Psilocarphus oregonus CNPS SN Foothill Team 2005-4-13 SNFN 0080 d Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  JEPS117508  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 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
  CAS-BOT-BC148606  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  CHSC29096  Pteridium aquilinum var. pubescens M. S. Taylor; J. D. Jokerst 1980-4-27 2549 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC30732  Pteridium aquilinum var. pubescens M. S. Taylor 1980-5-27 2649 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC39367  Pteridium aquilinum var. pubescens L. Ahart; P. Ahart 1983-9-21 4463 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CHSC63642  Pycnanthemum californicum B. Castro 1993-8-6 495 Butte Ca 100 ft E of Concow Rd, ca 5.1 mi NW of Hwy 70, ca 0.4 mi E of Concow Reservoir. Behind Golden Feather Volunteer Fire Station at jcn Concow Rd and Ishi Trail Rd. 640 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
  CHSC108957  Pyracantha koidzumii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte South side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  UC474257  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville Comment
  SEINET10449204  Pyrola picta f. aphylla Mary Susan Taylor 1977-6-25 Taylor 1387 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC62690  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte Honey Run grade on a north slope 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
  CHSC38446  Quercus douglasii Vernon Oswald 1983-5-21 514 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  SEINET10477880  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3476 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  CAS-BOT-BC62798  Quercus garryana John Thomas Howell 1955-6-15 30500 Butte 6 miles form Paradise on road to Pentz 426 Comment
  CAS-BOT-BC105141  Quercus kelloggii Lowell Ahart 1980-9-10 2625 Butte Little Bald Rock 1100 Comment
  CDA21944  Quercus kelloggii L. Ahart 1999-6-12 8084 Butte Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC6047  Quercus lobata M. MacArthur 1968-6-19 228 Butte SW side of Big Chico Creek ca. 30 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CHSC94972  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  SEINET10536065  Ranunculus aquatilis var. capillaceus Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4183 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  SEINET10833588  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1975-8-31 Taylor 890 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
  CHSC9109  Ranunculus aquatilis var. hispidulus J. Goodwin 1970-4-28 60 Butte 1.7 mi. on Upper Park Road, Bidwell Park, Chico. Southeast corner of Horse Shoe Pond. Comment
  CAS-BOT-BC378987  Ranunculus arvensis L. L. Heinrichs 1970-5-9 s.n. Butte Biggs, East Biggs Rd., roadside in ditch E of canal Comment
  CDA3504  Ranunculus arvensis L. L. Heinrichs 1970-5-9 Butte East Biggs Road, Biggs. 0 Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  CHSC62832  Ranunculus canus Ella Icard 1893-4-1 Butte Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC45401  Ranunculus flammula var. ovalis Lowell Ahart 1981-8-15 3032 Butte Bottom of Snag Lake, on the north side of Snag Lake, about 10 miles north of Inskip. 1371 Comment
  CHSC115490  Ranunculus hystriculus L. P. Janeway 2015-2-18 11631 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  JEPS107343  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC11809  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. In meadows. 1550 Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  CAS-BOT-BC59887  Rhamnus ilicifolia A. A. Heller; H. E. Brown 1902-5-10 5522 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC59925  Rhamnus ilicifolia Lowell Ahart 1980-5-17 2299 Butte 1/2 mi. se. of Hurleton. 600 Comment
  CHSC30898  Rhamnus ilicifolia M. S. Taylor 1979-3-19 1931 Butte In vicinity of Pulga Bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC34038  Rhamnus ilicifolia L. Ahart 1981-7-7 2917 Butte On dry rocky granite soil along the edge of the rd near the rd to the Oak Grove Cemetary, ca. 1/4 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd, w of Forbestown. 600 Comment
  JEPS103265  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte 3 1/2 air mi SW of Forbestown (meadow, 100 yds S of int. of Black Bart Road and Forbestown Road) 753 Comment
  RSA518944  Rhamnus tomentella subsp. tomentella J. T. Howell 1959-9-20 34701 Butte Feather River Hwy 5.9 miles below W Branch bridge. Comment
  RSA518945  Rhamnus tomentella subsp. tomentella J. T. Howell 1975-6-15 51073 Butte Butte Creek near Chico 6 Comment
  UC175348  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10754 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC2392  Rhododendron occidentale R. Carter 1965-6-1 216 Butte Found on Bald Rock Rd. 1.8 mi. E of intersection with Zinc Rd. on S side of road. 883 Comment
  CHSC46015  Rhododendron occidentale Lowell Ahart 1979-4-28 1849 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1121072  Rhododendron occidentale C. G. Albertus 1933-7-5 41 Butte 2 mi se of Promontory Point 1066 Comment
  CAS-BOT-BC170520  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek 76 Comment
  CHSC96315  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Northern High Sierra Nevada. Large soggy meadow opening along an upper western branch of Keyser Creek; 0.7 km southeast of Bald Mountain summit. 1681 Comment
  CAS-BOT-BC169095  Ribes inerme var. inerme A. A. Heller 1915-6-11 12044 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  UC569561  Ribes roezlii P. L. Johannsen 1936-7-16 925 Butte Bolt Creek Paynes Creek Quadrangle 1432 Comment
  UC857964  Ribes roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows Sierra Nevada 1219 Comment
  RSA0024711  Ribes roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada. On Chico - Lake Almanor Road (Calif. Highway 32), approx. 5 miles North of Forest Ranch. 915 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CHSC96233  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Chico. Sierra Nevada foothills, 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. 10609840E, 4409919N, Nad 27. 253 Comment
  CAS-BOT-BC74473  Rorippa curvisiliqua F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  CHSC42060  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1986-11-9 5451 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC65775  Rorippa curvisiliqua var. occidentalis Vernon H. Oswald 1996-4-10 7352 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 10.1 and Tract 10.2 (seasonal marshes), Sanctuary 1. 32 Comment
  CHSC21145  Rorippa curvisiliqua var. orientalis M. S. Taylor 1975-4-26 533 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC38014  Rorippa curvisiliqua var. orientalis M. S. Taylor 1981-5-15 3746 Butte 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. 1158 Comment
  CHSC101762  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, 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
  CHSC35116  Rorippa nasturtium-aquaticum R. E. Preston 1981-8-31 144 Butte In spring; ca. 15 m s of park road, ca. 150 m w of Salmon Hole parking lot, Upper Bidwell Park, Chico. 125 Comment
  CHSC98952  Rorippa nasturtium-aquaticum Lowell Ahart 2008-5-21 14788 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC1562370  Rorippa palustris Lowell Ahart 1990-6-16 6516 Butte about 1/2 mi sw Enterprise Bridge (across Lake Oroville); below high water line Lake Oroville 243 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC42061  Rorippa palustris var. occidentalis Lowell Ahart 1986-11-14 5458 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC39356  Rosa gymnocarpa L. Ahart; P. Ahart 1983-9-21 4464 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CDA42879  Rosa multiflora L. Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  CHSC45800  Rosa pisocarpa subsp. ahartii L. P. Janeway 1988-6-5 2730 Butte Cyn of Big Chico Cr ca 1 mi NE of end of Upper Park Rd. Adjacent to the creek. 213 Comment
  CHSC60850  Rosa pisocarpa subsp. ahartii Vernon H. Oswald; Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  CAS-BOT-BC274224  Rostraria cristata Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS98374  Rotala indica Lowell Ahart 2000-10-15 8707 Butte 5 air miles S of Oroville (strand of the Thermalito Afterbay, S side of access road to the boat ramp; W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  UCD103090  Rotala ramosior E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  UCD103091  Rotala ramosior E. M. Johnston 1915-8-1 76 J Butte Biggs. Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  CHSC86141  Rubus glaucifolius John Dittes; Josephine Guardino 2002-6-21 620 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC30715  Rubus laciniatus M. S. Taylor 1980-5-27 2649 A Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC1601  Rubus parviflorus R. Carter 1964-5-16 95 Butte Feather R. Canyon, 1/4 mi. up S side of Bear Creek from Hwy. 40A. 640 Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  CHSC4724  Rumex acetosella R. Carter 1966-4-21 358 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing along roadside on E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 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
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  CHSC109612  Rumex pulcher Lowell Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CAS-BOT-BC433780  Rumex pulcher Lowell Ahart; John Thomas Howell; Gordon H. True 1974-5-3 50335 Butte Honcut Comment
  SD122531  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown 145 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CDA13832  Sagittaria longiloba G. F. Hrusa, T. D. Wilfred 1996-9-5 13560 Butte Butte Basin; Wet bank of White's Drain at edge of rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Perennial, flowers white. Not common here. Comment
  CHSC44433  Sagittaria longiloba Carl Wick 1988-6-17 Butte Rice field, south of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton. 39 Comment
  CHSC43288  Sagittaria sanfordii Lowell Ahart 1987-10-22 5920 Butte In Madrone Lake, near the Oroville-Quincy Highway. 609 Comment
  CAS-BOT-BC103452  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  LA208686  Salix exigua var. hindsiana A. A. Heller; 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson Comment
  CAS-BOT-BC107964  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  RSA0045621  Salix gooddingii Lowell A. Ahart 2012-4-17 17872 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC104077  Salix hindsiana Peter H. Raven 1953-5-9 5450 Butte 6.5 miles from Bangor on road to Oroville Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  CHSC50842  Salix jepsonii Vernon Oswald; Lowell Ahart 1990-7-19 4375 Butte Ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1950 Comment
  CHSC38668  Salix laevigata Vernon Oswald 1983-5-8 458 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. ca. 1200 ft e of Parking Area N at Salmon Hole (1.4 mi e of power lines). 176 Comment
  RSA0045619  Salix laevigata Lowell A. Ahart 2012-4-9 17848 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  SEINET10866289  Salix laevigata Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4295 Butte T19N R4E se/ne sec 3. Oroville quad. Turnout near Bridal Path sign, across Feather River from Spillway, along Oroville Dam Blvd (Alt 40), ca. 2.5 mi w of Oroville Dam Visitors Center. Comment
  CHSC31766  Salix lasiolepis L. Ahart 1973-3-7 165 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  RSA0058978  Salix lasiolepis Lowell Ahart 2012-4-9 17831 A Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  UC176160  Salix lasiolepis A. A. Heller 1913-4-5 Butte above Oroville (hills on n side of Feather River) Comment
  CAS-BOT-BC129578  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10695 Butte Hills, north side of the Feather River above Oroville Comment
  POM219072  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville. Near the head of N Willow Creek. 1550 Comment
  UC600410  Salix ligulifolia E. B. Copeland June, 1930 Butte by Butte Creek Jonesville 1500 Comment
  CHSC21074  Salix lucida subsp. lasiandra M. S. Taylor 1975-10-3 942 Butte Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  CHSC9692  Salix melanopsis E. L. Smith 1971-9-12 1064 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  SEINET10537413  Salsola Mary Susan Taylor 1979-10-2 Taylor 2207 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  POM193376  Sambucus microbotrys E. B. Copeland 1930-7-12 480 Butte Above Jonesville, along north brow of high ridge 2100 Comment
  UC875445  Sanicula bipinnatifida Lewis S. Rose 1937-6-10 37367 Butte Forbestown 838 Comment
  HSC32653  Sanicula bipinnatifida Patricia Datzman 1974-4-20 22 Butte Cherokee Mtn. Rd., 2 mi. S of Cherokee Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 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
  CHSC99561  Sanicula tuberosa L. P. Janeway 2008-6-15 9410 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  SEINET10454587  Sanicula tuberosa Mary Susan Taylor 1981-3-16 Taylor 3414 A Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC38299  Saponaria officinalis Vernon Oswald 1983-6-29 789 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp. In the bed of a channel of Chico Creek. 91 Comment
  UCD80215  Saponaria officinalis CNPS SN Foothill Team 2005-7-6 SNNR 0478 Butte CDFG Daugherty Hill Wildlife Area. 242 Comment
  UC474270  Sarcodes sanguinea H. F. Copeland 1922-5-22 224 Butte Jonesville Comment
  CAS-BOT-BC466194  Sarcodes sanguinea Herbert Copeland 1920-5-22 s.n. Butte Jonesville Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 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
  SEINET8244409  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico Creek. 76 Comment
  SEINET10628292 Image available Saxifraga fallax A. Arthur Heller 1914-3-19 Heller 11214 Butte Canon of Big Chico creek. Comment
  POM92858  Saxifraga oregana C. C. Bruce 1898-03 2043 Butte [no locality information] Comment
  CHSC30003  Scandix pecten-veneris Harritta Gaussoin 1980-4-22 17 Butte SW jct. of Boyles Rd. and Highway 99 N, ca. 13 miles N of Chico. 60 Comment
  SEINET10454696  Scandix pecten-veneris Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5225 Butte T20N R5E ne/nw sec 5. At jct of Bell Ranch Rd and Oroville- Quincy hwy (l62), ca. 1 mi sw of Berry Canyon School, s of Lake Madrone. Ca. 8 air mi ne of Oroville. Comment
  CHSC34162  Schoenoplectus acutus var. occidentalis L. Ahart 1981-8-31 3061 Butte Drying bottom of Wyandotte Lake, ca. 8 mi e of Oroville. 137 Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1564754  Schoenoplectus subterminalis V. Oswald and L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd 1.4 mi w of its junction with Coon Hollow Rd ca 1.2 mi (air) n Philbrook Reservoir; n of Philbrook Reservoir 1752 Comment
  JEPS95816  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET7487248 Image available Scirpus diffusus Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11404 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek; ; W side of paved road 1448 Comment
  CHSC29091  Scribneria bolanderi M. S. Taylor; J. D. Jokerst 1980-5-15 2633 Butte On Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 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
  SEINET3450761  Scribneria bolanderi Unknown 2003-5-18 10180 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut 40 Comment
  POM70087  Scutellaria californica C. C. Bruce 1897-05 1825 Butte Little Chico. Comment
  CAS-BOT-BC415018  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CHSC21005  Sedum spathulifolium M. S. Taylor 1975-4-29 546 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC29781  Sedum spathulifolium M. S. Taylor 1980-5-27 2689 Butte Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC3800  Sedum spathulifolium R. L. Adams 1964-4-13 62 Butte 3.4 miles from hwy; Skyway and on north side on Centerville Road. Comment
  JEPS116133  Selaginella hansenii Lowell Ahart, John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park 335 Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC363240  Senecio M. S. Taylor 1976-5-3 1100 Butte Ca. 2 ft e of Bald Rock Rd, ca. 50 ft n of jct of Oroville-Quincy Hwy & Bald Rock Rd, ca. 13 mi ne of Oroville 914 Comment
  CHSC33577  Senecio aronicoides M. S. Taylor 1981-4-16 3546 Butte W side of 21N33Y.1, ca. 0.5 mi n of is jct with Zink Rd near Big Bald Rock, ca. 3 mi e of Lake Madrone. 1036 Comment
  SEINET10474902  Senecio aronicoides Mary Susan Taylor 1981-4-16 Taylor 3546 Butte T21N R6E ne sec 30, Brush Creek quad. W side of 21N33Y.1, ca. 0.5 mi N of its jct with Zink Rd near Big Bald Rock, ca. 3 mi E of Lake Madrone, ca. 23 mi NE of Oroville. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC88645  Senecio eurycephalus var. lewisrosei Linnea Hanson 1986-5-8 276 Butte Plumas National Forest. Pulga Bridge. 548 Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  CHSC84011  Senecio sylvaticus Lowell Ahart 2003-6-23 10308 Butte In a field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC11833  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. Along streams. 1550 Comment
  CHSC69107  Senecio triangularis Lowell Ahart 1997-8-1 7767 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC492745  Senecio triangularis H. F. Copeland 1928-8-17 Butte Jonesville Comment
  CHSC418  Senecio vulgaris J. Turner 1930-4-3 Butte Chico. 57 Comment
  JEPS115314  Senecio vulgaris Lowell Ahart 2009-4-17 15539 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  UC832202  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte near Forest Ranch; Sierra foothills Comment
  SEINET9759302 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CAS-BOT-BC243564  Setaria parviflora John Thomas Howell 1959-9-20 34678 Butte Lower foothills, eastern outskirts of Oroville, Sierra Nevada 60 Comment
  JEPS120725  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  CAS-BOT-BC240120  Setaria pumila John Thomas Howell 1961-9-22 36765 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CAS-BOT-BC240124  Setaria pumila Lowell Ahart; Margit Epperson 1982-8-22 3749 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut 50 Comment
  CHSC66686  Setaria pumila Vernon H. Oswald; Lowell Ahart 1996-7-22 8086 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NW corner of Tract 9.1, Sanctuary I. 30 Comment
  CHSC49573  Setaria sphacelata Vernon Oswald 1988-6-8 3357 Butte Hamilton Rd. bordering the south side of Thermalito Afterbay, ca. 0.2 mi e of Hwy 99. In a ditch along the road. 32 Comment
  CHSC28637  Sherardia arvensis M. S. Taylor 1979-3-31 1975 Butte Jct of Pentz-Magalia Rd, and Pentz Rd, ca. 1/4 mi W of Hwy 70, SE corner, ca. 22 mi N of Oroville. 198 Comment
  CHSC48609  Sidalcea calycosa Vernon H. Oswald 1984-4-1 1113 Butte Humboldt Rd, about mid-way between El Monte and Bruce roads, Chico. 79 Comment
  CHSC71181  Sidalcea calycosa subsp. calycosa Lowell Ahart 1998-6-3 7964 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
  CHSC117406  Sidalcea diploscypha B. Castro 2009-5-5 1780 Butte Sacramento Valley. Ca 8 air mi NW of Oroville, 0.2 mi W of Hwy 99 and 0.75 mi S of Nelson Rd. 53 Comment
  CHSC75384  Sidalcea diploscypha Jennifer Slater 1997-4-27 36 Butte Upland the Wurlitzer addition of the Vina Plains Preserve, west of the Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  JEPS115593  Sidalcea hartwegii Lowell Ahart 2009-4-22 15583 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  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
  CHSC11786  Sidalcea oregana E. B. Copeland 1930-7-15 659 Butte Jonesville. 1500 Comment
  UCR133588  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 1318 Butte Jonesville 1524 Comment
  SEINET10937545  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1412 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA755037  Silene californica L. Ahart 2009-4-26 15624 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UCR179390  Silene californica Ann C. Myers 1976-4-25 42 Butte 20 miles north of Oroville County Road B-1 on Fether Falls Trail, 1.5 miles from trailhead 610 Comment
  JEPS110241  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 336 Comment
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  CHSC44513  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  JEPS97370  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte T26N R5E SW1/4 SW1/4 Sec. 4, 6000 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  SEINET3070885 Image available Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC113213  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte Near 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
  CAS-BOT-BC74929  Sinapis arvensis Lowell Ahart 1974-5-1 s.n. Butte About 2 miles east of Bangor. 500 Comment
  RSA769596  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  SBBG119799  Sisyrinchium bellum L. Ahart 2006-7-16 12998 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  CHSC20500  Smilax californica M. S. Taylor 1975-6-25 805 Butte Along Mud Creek, ca. 1/4 mi n of Richardson Springs Hotel, ca. 6 mi n of Chico. 213 Comment
  CHSC97757  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  JEPS110130  Solanum americanum Lowell Ahart 2006-9-28 13377 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS95810  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; 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
  CHSC39934  Solanum parishii M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC67398  Solanum parishii James D. Jokerst; R. A. Schlising 1985-4-8 2226 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  SEINET10474350  Solidago californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4148 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  SEINET10872003  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-9-12 Taylor 3330 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
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center 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
  CHSC43001  Sonchus asper Lowell Ahart 1987-7-17 5829 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
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near 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
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET8408351  Spartium junceum Richard R. Halse 2006-8-3 6987 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road. 1000 Comment
  CHSC118036  Spergula arvensis subsp. arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 233 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  SEINET10833464  Spergularia rubra Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4707 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  JEPS94310  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CAS-BOT-BC149711  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  UCD22593  Spiranthes porrifolia L. K. Mann 1959-6-5 s.n. Butte Along road between Oroville and Peutz, north of turnoff to Oregon City. Comment
  CHSC2414  Stachys ajugoides var. rigida R. Carter 1965-6-20 244 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd., in meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC43640  Stachys ajugoides var. rigida B. Castro 1987-5-16 90 Butte On narrow ridge just e of Cohasset Hwy, 9.5 mi by road from East Ave. in Chico. 539 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 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
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  UC2055627  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  SEINET10537441  Stellaria Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4198 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
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  CHSC30073  Stellaria borealis subsp. sitchana R. A. Schlising; M. S. Taylor 1980-7-5 3831 Butte 0.3 mi S of road to Soda Springs Campground in NW part of county, along Hwy 32. Creekside of tributary to Big Chico Creek. 1121 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  CHSC48279  Stellaria longipes var. longipes Vernon Oswald 1983-7-19 883 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 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-BC181448  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 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
  CHSC118928  Stephanomeria tenuifolia J. M. Graut 1930-6-1 Butte Cascade Mtns. Comment
  SEINET10508399  Stipa pulchra Mary Susan Taylor 1979-5-4 Taylor 1997 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  JEPS108756  Streptanthus Lowell Ahart 2006-7-16 12958 A Butte N side of Humboldt Road, abut 1 1/2 air mi SW of Butte Meadows 1435 Comment
  CAS-BOT-BC61285  Streptanthus cordatus var. cordatus John Thomas Howell 1955-6-14 30467 Butte Near Magalia. 731 Comment
  CHSC7047  Streptanthus diversifolius Darron Cook 1969-4-22 66 Butte W. side road top Table Mtn. ca. 7 mi n of Oroville. Comment