Search Results — 2000 specimen records retrieved (1588 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC88614  Abies concolor H. Gray 2003-6-3 Butte Plumas National Forest. Parking Lot, Bald Rock Trail. 792 Comment
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC45327  Abutilon theophrasti Vernon Oswald 1987-9-7 3233 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  CHSC22670  Acer macrophyllum Carol C. Getzinger 1964-5-1 66 Butte Along Hwy 32, 21.4 mi n of jct with Hwy 99 in Chico; 914 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  CHSC51843  Acer macrophyllum Richard Steward 1988-3-6 1 Butte East bank of small stream, ca. 4.2 mi N, 0.3 mi E of Tall Pines Golf Course, Paradise. 640 Comment
  CHSC115410  Acer negundo M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CHSC42394  Achillea millefolium Lowell Ahart 1987-6-9 5737 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
  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
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  RSA712954  Achnatherum lemmonii var. lemmonii L. Ahart 2006-5-10 12625 Butte Bardees Bar Road, South of the small stream, About 200 yrds NW of poor bridge across the North Fork of the Feather River at Bardees Bar, About 2.5 air mi SW of Pulga Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  CHSC33374  Achyrachaena mollis Alisa Goldman 1980-4-23 20 Butte North of Chico. 57 Comment
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  CHSC113096  Acmispon americanus var. americanus Lowell Ahart 2013-11-18 19282 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC29797  Acmispon americanus var. americanus M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2873 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CAS-BOT-BC204851  Acmispon argophyllus var. fremontii Lowell Ahart 1983-6-26 4162 Butte Along Bean Creek Road, about 2 miles south of LIttle Bald Rock, about 19 miles north-east of Oroville 800 Comment
  CHSC3754  Acmispon brachycarpus R. L. Adams 1964-4-12 66 Butte Bidwell Park on Sacramento River, W. Sac. Ave. and River Rd. 9 mi. W. Chico. Comment
  CHSC6600  Acmispon grandiflorus var. macranthus G. Estrem 1968-4-23 2 Butte Ca. 20 mi e of Oroville on hwy. 70. Ca. 100 yds. s of road on n facing slope. Comment
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC45912  Acmispon wrangelianus Lowell Ahart 1981-4-24 2785 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS119692  Acmispon wrangelianus Lowell Ahart 2012-5-2 17956 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CAS-BOT-BC418782  Aconogonon phytolaccifolium A. A. Heller 1914-8-8 11672 Butte At Jonesville 1524 Comment
  SEINET10573363  Actaea rubra R. M. Austin Austin 275 Butte Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  SEINET10473549  Adenocaulon bicolor Mary Susan Taylor 1977-8-17 Taylor 1466 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CHSC38073  Aegilops triuncialis R. E. Preston 1982-7-5 325 Butte On W side of Notre Dame Blvd, Chico. Comment
  CHSC21908  Aesculus californica Robert A. Schlising; Et al 1964-6-11 2722 Butte Few miles south of Paradise along Honeyrun Road. Comment
  POM85637  Aesculus californica Mrs. R. M. Austin 1899-05 s.n. Butte Dead Mans Grade. Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS87534  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte on top of ridge about 1/2 mi e Snow Mountain; e of Snow Mountain 2103 Comment
  CHSC50541  Agoseris aurantiaca Vernon Oswald 1990-7-3 4344 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC102415  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 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
  CAS-BOT-BC447800  Agrimonia gryposepala Strothman 1913-7-1 233 Butte Tilden, Plumas Forest 792 Comment
  CHSC59034  Agrostis exarata var. exarata Lowell Ahart 1992-8-2 6907 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 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
  CAS-BOT-BC139719  Agrostis gigantea Lowell Ahart 1987-6-9 5731 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10661070  Agrostis hendersonii Lowell Ahart 2007-5-22 Ahart 13899 Butte T21N, R6E, southeast 1/4 Section 30. On Big Bald Rock, about 14 miles (air) northeast of Oroville. 956 Comment
  UC1564752  Agrostis idahoensis V. Oswald and L. Ahart 1989-8-15 3944 Butte Soda Ridge Road 1.4 mi w of its junction with Coon Hollow Road (ca 1.2 mi (air) n of Philbrook Reservoir) 1752 Comment
  SEINET10968290  Agrostis microphylla var. hendersonii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4167 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
  JEPS110399  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET11688338  Agrostis scabra L. Ahart, Ahart, P. 1984-1 4738 Butte ca 1.5 mi SE of Bald Mountains, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC45103  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air miles north-east of Jones Meadow. 1920 Comment
  CHSC64252  Agrostis stolonifera S. C. Morey 1983-7-23 581 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1564767  Agrostis variabilis V. Oswald and L. Ahart 1989-8-22 3958 Butte ca 3.5 mi (air) se Jonesville (Butte Creek House Meadow on e side Humbug Road); Butte Creek House Meadow 1767 Comment
  CHSC42839  Agrostis viridis Lowell Ahart 1987-5-27 5700 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC49499  Agrostis viridis Vernon Oswald 1987-5-18 2914 Butte Butte Creek Reserve on the s side of Butte Creed n of the Skyway. 80 Comment
  CHSC56620  Aira caryophyllea J. D. Prouty 1980-3-7 80 .35 Butte Ca 1 mi east of Palermo-Honcut Hwy, 50 ft south of Melody Lane. 48 Comment
  CHSC113209  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 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
  JEPS104027  Alisma plantago-aquatica Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET10471917  Allium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5512 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC96559  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  JEPS116048  Allium amplectens Lowell Ahart 2009-4-17 15560 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
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  RSA245253  Allium amplectens J. P. SmithJr 1972-3-23 5097 Butte 1.6 miles from junction with U.S. 99 on the road to Paradise. Comment
  SBBG17107  Allium amplectens M. Vincent 1960-4-15 176 Butte Pentz Rd, 12 mi S of Paradise Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  SEINET3884403  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3371 Butte Above Lunt Rd., 0.4 mi. n. of Hwy. #70.; 0 Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  RSA112747  Allium peninsulare var. peninsulare E. K. Balls, Lee W. Lenz 1955-5-13 20696 Butte About 1 mile NE of Pentz trading post on road to U. S. highway 40. From Oroville-Magalia road. 305 Comment
  UC600455  Allium validum unknown 1920-7 430 Butte Jonesville Comment
  CHSC45441  Allophyllum divaricatum Lowell Ahart 1984-6-8 4673 Butte Along the dirt road near the water tower that is above the generator, about 2 miles north of Forbestown, about 1 mile east of the Ponderosa Dam. 457 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC99661  Alnus incana subsp. tenuifolia H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  CAS-BOT-BC170915  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  SEINET10478439  Alnus rhombifolia Mary Susan Taylor 1979-10-12 Taylor 2242 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CDA28195  Alopecurus carolinianus L. Ahart 2003-3-31 10030 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC49506  Alopecurus carolinianus Vernon Oswald 1988-4-13 3271 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC82268  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the east side of a canal, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UCD169392  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  CHSC42853  Alopecurus geniculatus Lowell Ahart 1987-5-6 5547 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-BC137938  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC8196  Alopecurus saccatus D. McClain 1969-4-18 59 Butte 1/2 mi. n.w. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CDA3268  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  RSA722695  Amaranthus albus Richard Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte Near 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
  JEPS98337  Amaranthus palmeri Lowell Ahart 2000-7-23 8605 Butte 2 1/2 mi S of Durham (W edge and side of the Midway, N of Butte Creek) 45 Comment
  CHSC61022  Amaranthus rudis Vernon H. Oswald 1993-7-29 5740 Butte Arroyo Chico. S side of Kusal Slough Bridge on Sacramento Ave., 0.25 mi E of Sutter Ave. (Upper River Rd.) near the Sacramento River W of Chico. 39 Comment
  CHSC76263  Amaranthus rudis Lowell Ahart 1999-9-21 8266 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
  CHSC85142  Amaranthus rudis John Dittes 2003-10-8 847 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
  SEINET10452827  Ammannia auriculata Mary Susan Taylor 1978-7-22 Taylor 1851 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  SBBG120071  Ammannia coccinea L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC61322  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CHSC111158  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  JEPS115309  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 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
  SEINET10497096  Amsinckia intermedia Mary Susan Taylor 1980-3-1 Taylor 2343 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  UC726987  Amsinckia lycopsoides A. A. Heller 1939-3-23 15354 Butte near Wick's Corner (along the Highway) Comment
  CHSC117436  Anagallis arvensis Lowell Ahart 2016-5-30 20900 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC20115  Anagallis arvensis M. S. Taylor 1975-4-26 517 Butte Scattered on creek bank, in meadow ca. 50 m e of Kunkle Reservoir, ca. 50 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC27243  Anagallis arvensis P. Moyer 1972-4-16 174 Butte S bank Chico Ck., e of Warner St. bridge. CSUC campus. 60 Comment
  UC463031  Anagallis arvensis E. B. Copeland 1931-7-20 Butte Albertine 1700 Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  CAS-BOT-BC137803  Andropogon virginicus var. virginicus Bellue 1942-3-17 s.n. Butte About 2 miles east of Oroville. Thermalitos. Comment
  JEPS83781  Anemone occidentalis V. Oswald and L. Ahart 1988-7-29 3644 Butte ca. 5 mi. (air) s.w. Jonesville (on ridge running e. from peak of Snow Mt., n. brow of ridge) 2103 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC79636  Angelica breweri G. F. Hrusa; T. D. Wilfred 1996-7-9 13184 Butte On 22N89 approx. 0.3 m. from intersection of Hwy 162. Plumas National Forest. [Lat./Long. on label is '39 45 N; 121 18 W']. 1200 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC60957  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  SFV11430  Anthemis cotula M. L. Vincent 1968-6-5 771 A Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  SEINET10473582  Anthemis cotula Mary Susan Taylor 1980-10-6 Taylor 3356 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
  CDA34135  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  CHSC40890  Antirrhinum leptaleum Lowell Ahart 1985-6-30 5073 Butte About 10 yards south of Forbestown Road, about 100 yards south of intersection with Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC39235  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5217 Butte Vicinity of mouth of Flag Canyon. On top pf North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  RSA371507  Antirrhinum vexillocalyculatum subsp. intermedium David M. Thompson 1986-6-25 537 Butte E of Old Yankee Hill. 2.0 miles S of Hwy. 70 on Dark Creek Road (the old Hwy. 70 grade before the creation of Lake Oroville). 442 Comment
  CHSC103  Apocynum androsaemifolium 1931-6-3 Butte Forest Ranch. 609 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC52191  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 236 Butte Ca. 23.5 air mi E of Chico. 1219 Comment
  JEPS119576  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UC1594591  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CAS-BOT-BC409924  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte about 1 mile SW of the crossing across Fall River, about 1 mile NE of Camp 18, NE of Feather Falls 1310 Comment
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  CAS-BOT-BC24409  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51567 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38864  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico in the digger pine and oak belt. Comment
  CAS-BOT-BC38872  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Road 3 miles west of paradise near the upper limit of the Upper sonoran Life Zone. Comment
  CHSC100793  Arctostaphylos manzanita subsp. manzanita Lowell Ahart; John Dittes, Steve Green 2009-1-17 15468 Butte On the north side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  CHSC109107  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  UC726657  Arctostaphylos mewukka A. A. Heller 1942-3-22 16405 Butte 1/2 mi below first house; Cohassett Comment
  UCD52377  Arctostaphylos mewukka L. Ahart 1985-11-17 4840 Butte Near Kunkle Reservoir; about 2 miles south of Paradise. 518 Comment
  JEPS119541  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-1-12 17735 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS119557  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17751 Butte On the south side of Ten Mile House Road, about 1/2 miles west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC11946  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of 'the Summit'. 2100 Comment
  POM193357  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  SD3597  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge east of the Summit. 2100 Comment
  CAS-BOT-BC47370  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51104 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47381  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51092 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48281  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-3 s.n. Butte Near Honcut 60 Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  JEPS94890  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte about 7 air mi n Oroville (about 1/4 mi w of the cattle chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 388 Comment
  UC203846  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte uplands between Pentz and Dry Creek Comment
  SEINET8521979  Aristida oligantha Kelly W. Allred 1991-1 5479 Butte outskirts of Oroville along hwy 70, dry roadside 108 Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  HSC86842  Aristolochia californica Craig Thomas 1977-4-12 14 Butte 300 m E-SE of Chico Municipal Golf Course HQ, 50 m S of Chico Creek, 6 km E of Chico 90 Comment
  UC543770  Aristolochia californica Herbert L. Mason 1927-5-10 3717 Butte ne of Oroville (Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  UC600518  Arnica dealbata H. F. Copeland 1930-7-26 13206 Butte Jonesville, on ridge above hotel Jonesville Comment
  CAS-BOT-BC82411  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 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
  CHSC58670  Artemisia sacrorum M. Bailey 1991-6-6 Butte Growing in the median strip of Hwy 99, ca 1 mi N of its jct with Neal Road. 60 Comment
  CHSC33905  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Creek crossing 20N15 Lumpkin Ridge Rd, 1.9 mi w of Golden Trout Crossing on south fork Feather River, ca. 5 air mi e of Feather Falls. 1097 Comment
  CHSC3146  Asclepias cordifolia Gary Dutton 1966-4-23 254 Butte Found 9 miles from Chico on Hwy. 32. Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1123539  Asclepias fascicularis A. E. Wieslander 1933-10-12 345 Butte Durham Chico Quadrangle Comment
  CHSC23404  Aspidotis californica M. S. Taylor 1976-3-6 1008 Butte Above Macabes Creek, ca. 50 ft e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC32144  Aspidotis californica L. Ahart 1975-4-1 734 Butte Along Ponderosa Way, near Feather Falls. 365 Comment
  CHSC94270  Aspidotis densa Lowell Ahart 2006-7-16 12965 Butte Deep road cut, west of the open mudflow area, on the south side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  POM219381  Aster alpigenus H. F. Copeland 1931-4-11 1534 Butte Butte Creek Meadows 1829 Comment
  SEINET256391  Aster chilensis var. medius Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch. about 1 1/2 miles north and 3 miles east of Honcut., about 12 miles south of Oroville. 55 Comment
  CAS-BOT-BC178466  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  SEINET10452225  Astragalus gambelianus Lowell Ahart 1985-3-22 Ahart 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  JEPS94940  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte about 3/4 mi n Golden Trout Crossing (on gravel bars on w side of sharp bend in the river, about 1/4 mi n of the bridge, 3 air mi ne of Sly Creek Reservoir Dam); South Fork of the Feather River 914 Comment
  JEPS116043  Athysanus pusillus Lowell Ahart, John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC36556  Atriplex argentea var. mohavensis L. Ahart 1982-7-10 3662 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC37077  Atriplex heterosperma L. Ahart 1982-9-9 3766 Butte On sides of deep ditch, near water line on bare soil, ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC311784  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CAS-BOT-BC176606  Atriplex serenana var. serenana Lowell Ahart 1977-7-24 s.n. Butte Gray Lodge, 10 miles southwest of Gridley 30 Comment
  JEPS90629  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 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
  CHSC103704  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 246 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 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
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC46858  Azolla microphylla Vernon Oswald 1989-9-6 3990 Butte Hwy 162 just e of the railroad crossing at the Rice Experimant Station, ca. 2.5 mi sse of Richvale. 30 Comment
  JEPS127249  Azolla microphylla Lowell Ahart 2016-9-4 21342 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  CHSC35990  Balsamorhiza deltoidea J. D. Jokerst 1982-5-8 1566 Butte Road to Forbestown Resv. E of town of Forbestown. Comment
  CHSC42511  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  JEPS119501  Bellis perennis Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC75548  Berberis dictyota Lowell Ahart 1983-4-14 3935 Butte About 0.75 mile west of the Forbestown Reserve, about 3.25 miles northeast of Forbestown. 450 Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  JEPS115000  Bidens frondosa Lowell Ahart 2007-11-3 14570 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  RSA0035339  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC35651  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  CHSC83912  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  JEPS104354  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC14634  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  SEINET10453129  Boisduvalia densiflora Mary Susan Taylor 1975-6-30 Taylor 817 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  RSA166345  Boisduvalia glabella D. M. Moore 1960-6-2 99 Butte U.S. 99E 1.2 mi. S of Butte - Tehama county line Comment
  CHSC36842  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  SEINET10644682  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3674 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC777276  Botrychium W. H. Wagner Jr. with F. S. Wagner and Dr. E. B. Copeland 1949-7-16 4609 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  UC1472738  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 4a&b Butte Jonesville 1524 Comment
  UC955483  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-25 9780 Butte Jonesville 1554 Comment
  JEPS106108  Botrychium simplex Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows 1554 Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  RSA0101689  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CAS-BOT-BC417632  Boykinia major Lowell Ahart 1985-7-9 5114 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CDA15368  Boykinia occidentalis G. F. Hrusa 1997-5-29 13796 Butte Sierra Nevada; Bank of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CHSC51917  Boykinia occidentalis L. P. Janeway 1987-6-20 2275 Butte Near Fall River, along rd to Fall River and Cascade 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  JEPS94325  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte low water crossing Clear Creek, Butte Junior College, s of the hay barn Clear Creek; , Butte Junior College 76 Comment
  CHSC113218  Brassica nigra Lowell Ahart 2014-4-26 19414 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
  CHSC116975  Briza maxima Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Sspillway. 118 Comment
  CHSC49510  Briza minor Vernon Oswald 1985-5-13 1754 Butte Upper Bidwell Park, Chico, on the rocky bed of Chico Creek at the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CAS-BOT-BC482215  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  CHSC88078  Brodiaea californica var. californica R. D. Fischer 2004-6-6 163 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). At stream crossing on Big Chico Creek, 300 ft n. of gated property line of Bidwell Park. Off of Chico Canyon Road (name on older maps), e. side of creek. 213 Comment
  UC768718  Brodiaea coronaria subsp. coronaria R. F. Hoover 1936-5-20 1154 Butte 10 mi sw Oroville Comment
  CHSC113807  Brodiaea elegans M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CAS-BOT-BC483077  Brodiaea elegans subsp. elegans James McMurphy 1914-6-14 s.n. Butte Wallace Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  HSC32627  Brodiaea minor David Johnson 1974-4-20 17 Butte 1 mi. E of Hwy. 99 along Skyway Rd. Comment
  SD48511  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte On drying clay and open grassland, U.S. Highway 99, 1.7 miles northwest from junction with road from Pentz. 91 Comment
  UC143034  Brodiaea minor Mrs. R. M. Austin 1890-1 816 Butte e Chico Comment
  CAS-BOT-BC486486  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, Honcut, California. Near large rocks on flood plains along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  RSA700240  Bromus carinatus L. Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  JEPS106210  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown 752 Comment
  SEINET10662690  Bromus carinatus var. carinatus Lowell Ahart 2007-5-29 Ahart 13943 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  CAS-BOT-BC156295  Bromus caroli-henrici Lowell Ahart 1984-5-31 4655 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC82266  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  SEINET11689143  Bromus catharticus J. M. Lund 1980-1 s.n. Butte S side of Nord Ave., 0.3 mi W of 1st St., beside an apt. complex, Chico Comment
  CAS-BOT-BC156072  Bromus diandrus Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC38797  Bromus diandrus Vernon Oswald 1983-2-23 101 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 0.2 mi w of the power lines. 97 Comment
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  RSA755045  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  SEINET6778858  Bromus diandrus H. C. Jansen 1984-1-5 Butte Chico Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  JEPS116070  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  JEPS118076  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 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
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC161618  Bromus sterilis Lowell Ahart 1980-5-17 2292 Butte 0.5 mile southeast of Hurleton. 600 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CAS-BOT-BC438354  Calandrinia ciliata Mrs. C. C. Bruce 1897-5-1 s.n. Butte Little Chico - fields Comment
  RSA456118  Callitriche heterophylla L. Ahart 1984-5-7 4595 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy.; pool a little E of Kunkle Creek. 600 Comment
  SEINET10939584  Callitriche heterophylla subsp. bolanderi Mary Susan Taylor 1984-4-6 Taylor 5403 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC59485  Calocedrus decurrens Michael Deal 1992-4-19 4 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  CAS-BOT-BC487510  Calochortus albus John Thomas Howell; Gordon H. True 1967-5-9 42230 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  SEINET12044754  Calochortus albus J. H. Morrison 1932-1 s.n. Butte Durham Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  CAS-BOT-BC489975  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC491848  Calochortus luteus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET12048534  Calochortus luteus Unknown 1984-1 11 Butte ca 9 mi NE Chico and 100 yds N Big Chico Creek 206 Comment
  CHSC2239  Calochortus monophyllus N. Maxwell 1929-3-17 Butte Paradise. 609 Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  SEINET12048519  Calochortus monophyllus Unknown 1984-1 5 Butte ca 3 mi E from the jct of Honey Run and Humbug roads, N side of road 305 Comment
  SEINET12048524  Calochortus monophyllus G. C. Russell 1975-1 1 Butte 8.2 km NE of Chico Municipal Airport 325 Comment
  UCD14305  Calochortus monophyllus Maura Cullinene 1983-4-16 4 Butte from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit north-east, turn right on Richardson's Springs Road, drive for 3 miles to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17. 304 Comment
  POM169644  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC436309  Caltha biflora E. B. Copeland June, 1930 Butte Jonesville; Willow Creek Meadow 1550 Comment
  HSC66225  Calycadenia fremontii Hayes, Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Hwy., approx. 2.3 mi. S of the Chico Airport 35 Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  CAS-BOT-BC270006  Calycadenia multiglandulosa Lowell Ahart 1983-6-21 4086 Butte Found along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville 450 Comment
  CHSC46914  Calycadenia multiglandulosa Lowell Ahart 1980-6-19 2390 Butte Along the edge of Swedes Flat Road, about 1/8 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, northeast of Bangor. 304 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-BC106121  Calycadenia oppositifolia Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise, in an open area about 1/4 mi N of Kunckle Res. 500 Comment
  CHSC45540  Calycadenia oppositifolia 1976-5-28 Butte PG and E power line right-of-way on rd to Miller's Pond, ca 0.5 mi W of Hwy 70 at Rockhouse; 0.5 mi S of Jarbo Gap. 655 Comment
  CHSC78118  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  JEPS20220  Calycadenia oppositifolia R. F. Hoover 1938-4-24 3237 Butte 3 mi n Chico Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  CHSC112038  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  CAS-BOT-BC270886  Calycadenia spicata Lowell Ahart 1981-8-31 3052 Butte W of Forbestown 750 Comment
  SEINET10475224  Calycadenia spicata Mary Susan Taylor 1979-5-6 Taylor 1998 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UC1971681  Calycadenia spicata G. D. Carr 1971-6-5 559 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  CHSC26701  Calycadenia truncata M. S. Taylor; M. Hayes 1977-8-16 1453 Butte On N side of Clear Creek next to the newly built bridge (population partially destroyed by the construction), Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC28808  Calycadenia truncata J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 410 Butte Top of Table Mt 100 m north of Cherokee Rd. 396 Comment
  JEPS115867  Calycadenia truncata Lowell Ahart 2009-6-30 15954 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
  SBBG7840  Calycadenia truncata D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 mi S of Flea Valley on rd to Yankee Hill Comment
  SEINET10475219  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-6-22 Taylor 2166 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  SEINET10872000  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4182 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CAS-BOT-BC275386  Calycadenia truncata var. truncata John Thomas Howell 1951-6-26 27506 Butte Feather River Canyon 198 Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  CHSC1363  Calyptridium monospermum 1954-5-30 Butte Rag dump 5, near Stirling. 1127 Comment
  CHSC27972  Calystegia malacophylla subsp. malacophylla M. S. Taylor 1978-7-19 1769 Butte On s side of Upper Scotts John Rd, ca 3 mi n of its jct with Scotts John Rd, ca 7 mi ne of Jonesville. 1889 Comment
  CHSC62105  Calystegia occidentalis subsp. occidentalis L. P. Janeway 1993-7-2 4428 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Rd 22N84 2.6 mi from Rd 23N28 and 1.8 mi past its crossing of Stony Creek. 993 Comment
  POM38436  Camissonia graciliflora C. C. Bruce 1897-05 1957 Butte Near Chico. Comment
  CHSC38415  Capsella bursa-pastoris Vernon Oswald 1983-2-14 77 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  RSA4216  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC101975  Cardamine californica var. californica John Copeland 1980-2-20 9 Butte Ca. 0.8 mile SE of Cohasset Road, E side of Maple Branch. Comment
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  CDA24758  Cardamine oligosperma L. Ahart 2005-4-2 11684 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC103665  Cardamine oligosperma Lowell Ahart 2010-2-13 16566 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC10645  Cardamine oligosperma Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113275  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  RSA715722  Cardamine oligosperma L. P. Janeway 2005-3-1 8335 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  UC1609210  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  UCD114532  Cardamine oligosperma L. Ahart 1974-2-25 304 Butte Peter Ahart Ranch in Honcut. 15 Comment
  CHSC32740  Cardamine pachystigma M. S. Taylor 1981-4-16 3540 Butte Ca. 50 ft w of Bald Rock Rd near Zink Fire, ca. 1 mi s of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC83934  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River. 341 Comment
  JEPS115289  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley 27 Comment
  JEPS115627  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2009-5-15 15691 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS122273  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC77165  Carex G. F. Hrusa; T. D. Wilfred 1997-5-7 13737 Butte In riparian zone of Little Butte Creek above Magalia Reservoir, N of Magalia, immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 720 Comment
  SEINET10644206  Carex Lowell Ahart 2003-6-30 Ahart 10324 Butte T19N, R6E, northwest 1/4 Section 4. On the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC55426  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1852 Butte Along Humbug Summit Road at Cold Springs, just below Humbug Summit. 1965 Comment
  JEPS121933  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC53711  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2509 Butte Southern-most pond on slopes on south side of Coon Hollow. 1767 Comment
  JEPS121995  Carex angustata Lowell Ahart 2014-7-13 19643 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM218979  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SEINET7550020 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, John Hunt 2003-4-22 7764 Butte Oroville Dam quad. Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  SEINET7291831 Image available Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville Comment
  SEINET3128047  Carex barbarae L. S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CAS-BOT-BC19419  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte About 4 road miles north of Stirling City. On the east side of the West Branch of the Feather River. 914 Comment
  JEPS116003  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 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 Highway 32, about 10 miles northeast of Chico 269 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CHSC61509  Carex cyrtostachya Lowell Ahart 1993-7-6 7052 Butte On the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SD257095  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River and the County Road; Ca. 4.0 air miles northeast of Feather Falls. 1219 Comment
  CHSC112095  Carex densa Lowell Ahart 2012-5-20 18095 Butte Along a small drainage, about 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 346 Comment
  CHSC51509  Carex densa J. D. Jokerst 1980-4-19 620 Butte Roadside seep, side of Humbug Road 7.4 miles north of Centerville Cemetery, canyon of Butte Creek. Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  JEPS104172  Carex densa Lowell Ahart 2003-5-27 10220 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue Chico. 121 Comment
  CAS-BOT-BC34956  Carex densa L. P. Janeway 1988-4-10 2616 Butte Below Centerville Road (Humbug Road) 1.0 mile NE of Honey Run Road. 115 Comment
  JEPS109982  Carex disperma Dean W. Taylor 2006-8-1 s. n. Butte 200 ft E of Keyser Creek 1554 Comment
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CAS-BOT-BC19996  Carex feta A. A. Heller 1913-6-4 10781 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  JEPS118053  Carex feta Lowell Ahart 2011-8-23 17649 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC102376  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 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. 59 Comment
  CHSC55428  Carex gracilior L. P. Janeway 1991-4-30 3917 Butte At the head of Spring Hollow, 2 mi E of confluence of South and North Forks Feather River (under Lake Oroville). 350 Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CAS-BOT-BC28190  Carex hirtissima Lowell Ahart 1982-5-8 3425 Butte 1/10 mi N of the intersection of Lower Forbestown Road and Ponderosa Way, 700 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  CHSC100883  Carex hoodii L. P. Janeway; Linus Gog 2008-7-19 9442 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
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 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
  RSA0119041  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC75310  Carex inversa Lowell Ahart 1999-5-24 8081 Butte At the edge of the lawn on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  UC1563264  Carex laeviculmis Lowell Ahart and Vernon Oswald 1990-8-14 6576 a Butte ca. 0.75 mi w of n end Sly Creek Reservoir (along a small branch of French Creek, on the n side of Forest Rd. 21N16); French Creek 1219 Comment
  UCD77464  Carex laeviculmis Robert E. Preston 2003-7-17 2161 a Butte Ca. 1 mi SW of Butte Meadows, on N side of The Skyway. 1437 Comment
  POM80928  Carex lemmonii Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  UCR246363  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Northern Sierra Nevada Highlands (n SNH), Moreville Ridge Road [Forest Road 20N03 ], 0.4 road miles N of dam on Lost Creek Reservoir 1025 Comment
  SJSU5739  Carex leptopoda Lewis S. Rose 1963-6-5 63140 Butte N Fork Feather R, Arch Rock Tunnel 487 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  CAS-BOT-BC32160  Carex multicaulis L. P. Janeway 1988-5-19 2666 Butte Cohasset quad, West Branch Mud Creek at crossing of Vilas Road, E of Cohasset. 746 Comment
  CHSC44103  Carex nervina L. P. Janeway; C. A. Janeway 1986-8-31 1803 Butte Along Jones Cr at dirt rd (26N27) crossing; the rd between Humboldt and Humbug Rds; 11 mi from hwy 32 by rd. 1615 Comment
  CHSC44125  Carex nervina V. Oswald; L. Ahart 1988-7-26 3623 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2026 Comment
  CHSC45060  Carex nervina Vernon Oswald 1983-7-19 879 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CAS-BOT-BC119566  Carex nudata Lowell Ahart 1980-5-12 2250 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  RSA755639  Carex nudata L. Ahart 2009-5-15 15708 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
  CHSC88363  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  SEINET10705318  Carex rostrata Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2503 Butte T26N, R4, Jonesville quad (15') SE1/4 of sec.36, Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. In soggy mossy meadow. Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  CHSC76849  Carex stipata var. stipata L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio 1997-6-13 5140 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  CAS-BOT-BC116747  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest. Along Feather River N of Stirling City. 1036 Comment
  SEINET4954932 Image available Carex subfusca Unknown 1987-8-18 954 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  OBI20285  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  JEPS120093  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance to Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  SBBG128004  Carex vernacula L. Ahart 2010-9-28 17264 Butte S edge of a 10 acre meadow, ca. 100 yards E of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  JEPS88574  Carex vulpinoidea Vernon H. Oswald and Lowell Ahart 1996-6-10 7754 Butte US Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (canal at ne corner of Tract 7.2, Sanctuary I); Sacramento National Wildlife Refuge, Llano Seco Unit 33 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  JEPS117245  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 277 Comment
  CAS-BOT-BC249596  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC109609  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 428 Comment
  CHSC114973  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC114978  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20032 Butte Road cut, on the west side of Rim Road, about 1/4 mile north of Jrbo Gap, about 15 miles (air) north of Oroville. 730 Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  SEINET10865280  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-5-6 Taylor 1583 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC255466  Castilleja applegatei var. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  UCD122348  Castilleja campestris R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W. of Oroville. Comment
  CHSC38713  Castilleja exserta Vernon Oswald 1983-3-31 235 Butte Upper Bidwell Park, Chico, beside Yahi Trail 1600 ft e of Salmon Hole. 182 Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  CHSC39932  Castilleja lacera M. S. Taylor; V. Oswald 1984-4-4 5393 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Comment
  JEPS107548  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  RSA0108969  Castilleja lacera Lowell A. Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1.5 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  UCR188712  Castilleja lacera 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
  JEPS81861  Castilleja lacera L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5850 Butte ca 0.5 mi w Lumpkin Road (to Feather Falls) (along Forbestown road, about 10 mi e of Oroville) 609 Comment
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Dec 21 2012
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC48817  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10870344  Ceanothus cuneatus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4865 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC50782  Ceanothus integerrimus Ira L. Wiggins 1925-3-25 1451 Butte Two and one half miles above Pence on Pence-Magalia Road Comment
  CAS-BOT-BC50818  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte Chico-Centerville Road 8 miles from Chico, on the slopes albong Butte Creek Comment
  SJSU5725  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather R Canyon, Pulga 487 Comment
  UCR270589  Ceanothus integerrimus John F. Emmel 2001-7-24 1736 Butte 2.3 road miles southwest of Jonesville on road to Humbug Summit, near Cherry Hill Campground 1768 Comment
  POM305568  Ceanothus integerrimus var. puberulus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 852 Butte Feather River Hwy. Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC51150  Ceanothus lemmonii Lowell Ahart 1980-3-26 2064 Butte Near Hurleton. Foothill Woodland 600 Comment
  CAS-BOT-BC51729  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte Near Stirling 1074 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CHSC32744  Ceanothus prostratus M. S. Taylor; L. Hanson, J. Horner 1981-4-16 3542 Butte N side of 21N31Y, ca. 1/4 mi. w of Bald Rock Rd, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  UC600526  Ceanothus prostratus H. F. Copeland 1930-7-26 Butte rocky peak above hotel (Jonesville); Jonesville Comment
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  RSA32884  Ceanothus prostratus var. occidentalis A. A. Heller 1941-6-22 16179 Butte roadside bank, edge of the forest at Cohasset. Comment
  CHSC6173  Centaurea solstitialis J. Wheeler 1968-5-17 371 Butte East of intersection of Broadway and First Street, Chico. 59 Comment
  UCD130107  Centaurea stoebe subsp. micranthos Lowell Ahart 1995-10-1 7642 Butte about 150 yards south of where the road crosses the South Fork of the Feather River, northeast of the Feather Fork Mine, about 6 (air) miles northeast of La Porte. 1706 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  SEINET10454834  Centaurium venustum Mary Susan Taylor 1980-5-15 Taylor 2632 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  UCD121534  Cephalanthus occidentalis L. E. Hazeltine 1916-7-7 s.n. Butte Chico. Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  JEPS12459  Cephalanthus occidentalis var. californicus H. A. Dutton 1921-1 Butte Hooker Oak Chico (Chico) Comment
  SEINET10500789  Cephalanthus occidentalis var. californicus Mary Susan Taylor 1980-8-30 Taylor 3324 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 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
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC115479  Cerastium glomeratum L. P. Janeway; Emily Meigs Doe 2015-4-22 11667 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  JEPS103292  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  UC1609208  Cerastium glomeratum Vernon H. Oswald and Lowell Ahart 1993-3-24 5238 Butte e. side of Dry Creek Canyon n. of Pentz historical site (on e. side of secondary drainage entering Dry Creek 2 mi. n. of Pentz Rd.) 243 Comment
  HSC4315  Ceratophyllum demersum T. F. Newman 1964-4-17 6441 Butte SW of Oroville Comment
  CAS-BOT-BC179536  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Plentiful in the canyon of Big Chico creek east of Chico. 68 Comment
  CAS-BOT-BC136999  Cercocarpus betuloides var. betuloides Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  POM66468  Chaenactis glabriuscula var. heterocarpha C. C. Bruce 1897-05 1988 Butte Forest- Ranch. Comment
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  CHSC45277  Chamaesyce nutans Vernon Oswald 1988-10-29 3721 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  UC725790  Chamaesyce ocellata A. A. Heller 1939-9-18 15481 Butte 1 mi from Oroville Rd Junction; Neal Grade Comment
  UC765099  Chamaesyce ocellata R. F. Hoover 1938-8-2 3716 Butte 13 mi s Chico Comment
  CDA32021  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC97689  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-11-3 14564 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  CHSC78230  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC96821  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  SEINET10529935  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3417 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CAS-BOT-BC460928  Chenopodium Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD97743  Chenopodium album Lowell Ahart 1981-11-6 3223 Butte Gray Lodge, south-west of Gridley. 35 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC83027  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 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
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  CDA3118  Chenopodium multifidum Vernon Oswald 2000-11-2 9981 Butte Chico Sweage Treatment Plant on Chico River Road west of Chico. Comment
  SEINET10449192  Chimaphila menziesii Mary Susan Taylor 1980-5-27 Taylor 2658 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC451484  Chimaphila umbellata E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1500 Comment
  POM193362  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  SEINET10874402  Chimaphila umbellata var. occidentalis Mary Susan Taylor 1978-9-9 Taylor 1907 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC29095  Chlorogalum angustifolium M. S. Taylor; J. D. Jokerst 1980-5-15 2621 Butte Ca. 3 mi n of Chico, ca. 1/2 mi e of Cohasset Rd. 91 Comment
  CAS-BOT-BC498629  Chlorogalum angustifolium John Thomas Howell 1962-6-15 37420 Butte 5 miles west of Oroville; Sierra Nevada Comment
  SEINET10472636  Chlorogalum angustifolium Mary Susan Taylor 1978-5-7 Taylor 1592 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC30812  Chlorogalum pomeridianum M. S. Taylor 1978-7-21 1841 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC99754  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  CAS-BOT-BC252670  Chorizanthe membranacea Lowell Ahart 1984-6-8 4678 Butte Along the dirt road 1/10 mile north-west of the water tower, above the genterator about 1 mile east of teh Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  RSA768994  Chorizanthe polygonoides var. polygonoides L. Ahart 2010-5-16 16705 Butte Open pasture field about 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 381 Comment
  CAS-BOT-BC252836  Chorizanthe polygonoides var. polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge 518 Comment
  CHSC25468  Chrysolepis sempervirens Hayes; Warner 1977-9-11 86 Butte On Humboldt Rd. exactly 1.1 mi below Humboldt Summit on the Butte-Tehama County line. 1859 Comment
  CHSC109642  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte North side of the paved park road, Lower Bidwell Park Chico. 62 Comment
  CHSC94529  Cinna latifolia Lowell Ahart 2006-8-15 13191 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC21141  Cirsium andersonii M. S. Taylor 1975-8-31 899 Butte Ca. 50 ft n of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UCD130510  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  CAS-BOT-BC285524  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CHSC38337  Cirsium occidentale var. venustum Vernon Oswald 1983-5-30 581 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  CHSC24775  Clarkia arcuata L. J. Gut 1976-4-23 20 Butte Ca. 100 yds s of Butte Creek, ca. 6.2 mi ese of Chico. 121 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC163543  Clarkia arcuata Frances Brown 1935-5-1 s.n. Butte Mountains near Durham Comment
  CDA37981  Clarkia arcuata L. Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC1071957  Clarkia biloba subsp. brandegeeae H. and M. Lewis 1947-6-11 394 Butte 7.0 mi nw Bangor (on road to Oroville) Comment
  UC725459  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte 22 mi from Oroville (on the Feather River Highway, just e of Jarboe Pass) 609 Comment
  RSA0060028  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte 4-5 airmiles N. of Paradise, and W. of upper Paradise Pines. Turn W. off Skyway Road on Nimshew Road and take the S. turn on Centerville Road (on older maps Humbug Road), ca 1.4 miles S. of this junction. 620 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
  UC1071907  Clarkia mildrediae H. and M. Lewis, F. Vasek June 1950 756 Butte 0.5 mi s Arch Rock (Hwy.24); Feather River Comment
  JEPS100226  Clarkia mildrediae subsp. lutescens Dean W. Taylor 2002-7-3 18219 Butte Forest Road 22N22 ca. 0.3 miles north of crossing of Fall River (ca. 1 air mile S of Walters Mine site) 1219 Comment
  JEPS103352  Clarkia mildrediae subsp. lutescens Lowell Ahart 2002-6-21 9731 Butte On road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CHSC70732  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-7 4432 Butte Canyon of North Fork Feather River, along dirt road from Hwy 70 to Bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel. Road cutbank. 502 Comment
  RSA671128  Clarkia mildrediae subsp. mildrediae G. Fred Hrusa, T. D. Wilfred 1995-7-9 13169 Butte Approx. 1 m. on 22N89, immediately S of Rogers Cow Camp on Hwy 162. 1100 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  CAS-BOT-BC163645  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1983-6-12 4036 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC97358  Clarkia purpurea subsp. quadrivulnera Paul Maslin 2005-6-1 55 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610858E 4410556N. 548 Comment
  UCD80466  Clarkia purpurea subsp. quadrivulnera CNPS SN Foothill Team 2005-5-5 SNFN 0157 c Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  CAS-BOT-BC172379  Clarkia purpurea subsp. viminea L. P. Janeway 1993-6-23 4400 Butte North side of French Creek, 0.5 mi west of mouth of Ram Creek, north side of Rd. 22N34, Plumas National Forest, Oroville Ranger District, Swayne Hill Compartment (non-Forest land) 615 Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  SEINET10841118  Clarkia rhomboidea Lowell Ahart 1984-6-8 Ahart 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UCD169923  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 mile (air) east of Chico. 180 Comment
  CHSC26737  Claytonia palustris M. S. Taylor 1977-7-15 1402 Butte Scattered creekside in shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  SBBG86232  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte south bank of Jones Crk, 0.4 km E of Jonesville Hotel, Jonesville; ISOTYPE 1550 Comment
  CHSC59334  Claytonia parviflora J. L. Guardino 1992-4-16 7 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42410  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte On dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  RSA469283  Claytonia parviflora subsp. parviflora L. Ahart, Peter Ahart 1984-6-10 4711 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC34764  Claytonia perfoliata subsp. perfoliata S. Scott 1981-4-24 Butte 1 km e of Manzanita Ave, and Centennial Ave intersection on Centennial Ave; ca. 2.5 mi e of Chicol 97 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10962339  Claytonia rubra Mary Susan Taylor 1981-4-28 Taylor 3564 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC89461  Clematis ligusticifolia R. D. Fischer 2004-7-18 451 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 near end of park property. Along drainage, between road and Big Chico Creek. 216 Comment
  CHSC29382  Clintonia uniflora R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3770 Butte Near Strawberry Valley, 2.2 mi N of La Porte Road (=1.2 mi S of S end dam at Sly Cr. Red.), at Strawberry Valley Cr. 39 degrees 34' N 121 degrees 7' W. 1059 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC84862  Collinsia tinctoria L. P. Janeway; John Hunt 2003-6-6 7814 Butte Northern Sierra Nevada Foothills. East-southeast facing slope above Lake Oroville 350 m northeast of the north end of Bidwell Bar Bridge. 296 Comment
  SEINET10548317  Collinsia torreyi Mary Susan Taylor 1978-6-24 Taylor 1648 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC29219  Collomia heterophylla M. S. Taylor; J. D. Jokerst 1980-4-27 2550 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC34994  Collomia heterophylla R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3772 Butte 2.2 mi N of La Porte Road (= 1.2 mi S of S end of Sly Creek Reservoir dam), at Strawberry Valley Creek. Roadside. 1059 Comment
  RSA337391  Collomia heterophylla L. Ahart, P. Ahart 1984-6-10 4694 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET12329580  Collomia heterophylla L. Ahart, Ahart, P. 1984-1 4694 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, Yellow Pine Forest 700 Comment
  SBBG29160  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville 1500 Comment
  SEINET10469998  Corallorhiza maculata Mary Susan Taylor 1980-7-6 Taylor 3080 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10865266  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1985-7-24 Ahart 5153 Butte Along the Forbestown Ditch, abut 2 1/2 miles north-east of Forbestown. Comment
  JEPS88910  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 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
  CHSC87801  Cornus sessilis Paul Maslin 2004-4-15 18 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609912E 4410265N. On edge of Big Chico Creek. 240 Comment
  UCD117262  Cornus sessilis Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC43248  Corydalis caseana subsp. caseana Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  UC398916  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC29241  Corylus cornuta var. californica M. S. Taylor 1980-5-8 2609 Butte Ca. 3 mi n of Forst Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10473719  Cotula australis Lowell Ahart 1983-4-1 Ahart 3916 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10473724  Cotula coronopifolia Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 100 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
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  UCD101854  Crassula connata Michael A. Vincent; Ethan H. Freid 1998-4-6 8126 Butte Table Mountain. 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
  CHSC4340  Crataegus monogyna Carl Pejsa 1966-5-18 30 Butte Bidwell Park Forestry Station. Comment
  CHSC77995  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS28122  Crucianella angustifolia John Thomas Howell 1962-6-16 37612 Butte w of Nelson Bar (Feather River West Branch); Sierra Nevada 304 Comment
  CHSC37662  Crypsis vaginiflora T. B. Devine 1981-9-3 768 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  SEINET10518389  Crypsis vaginiflora Lowell Ahart 1986-11-14 Ahart 5467 Butte On dry red gravelly soil, 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. 37 Comment
  CHSC151  Cryptantha S. Ptomey 1929-3-26 Butte Chico Golf Links. 60 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 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
  HSC101088  Cryptantha flaccida L. Ahart 1983-6-26 4119 Butte About 15 mi. NE of Oroville; along Ponderosa Way, ~2.0 mi. SE of the intersection of the Oroville-Quincy Highway and Ponderosa Way. 500 Comment
  RSA718310  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 355 Comment
  UCD80136  Cryptantha intermedia CNPS SN Foothill Team 2006-5-23 SNNR 0789 a Butte BLM Parcels near Paradise. 520 Comment
  CHSC33412  Cryptantha torreyana R. A. Schlising; R. Banchero 1980-7-11 3880 Butte At Merrimac in extreme NE part of county. 1203 Comment
  JEPS94944  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte about 1/4 mi e Table Mountain (near some small streamlets of creek, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  NY16718  Cupressus macnabiana C. B. Wolf 1934-10-5 6161 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  RSA739628  Cuscuta subinclusa L. P. Janeway, B. Castro 2008-8-5 9554 Butte Northern High Sierra Nevada, Plumas National Forest, upper end of Magee Ridge at a small gap betw Heinz Creek and Hibbard Creek, 2.7 air kim N of Coyote Gap. 1353 Comment
  UCD126343  Cuscuta subinclusa L. E. Hazeltine 1916-7-28 s.n. Butte Chico. Comment
  CHSC88575  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City. 1417 Comment
  UC105509  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 376 Butte Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116949  Cynoglossum grande Matthew Forster 2013-4-2 Butte Hwy 32 off of 10 Mile House Rd. Found along hiking path of 10 Mile House Rd. 457 Comment
  CHSC82508  Cynosurus echinatus Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9737 Butte On the sides 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
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10934072  Cynosurus echinatus K. Bridwell 1978-5-28 Bridwell 120 Butte Along Hwy 70, ca. 6 mi NE of intersection with Pentz-Magalia Hwy., ca. 4 mi SE of Paradise. Yellow Pine Forest. 762 Comment
  CAS-BOT-BC114705  Cyperus bipartitus Lowell Ahart 1987-8-30 5865 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 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. Gravel bar along the river. 48 Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  UCD141017  Cyperus difformis H. L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CHSC6630  Cyperus eragrostis M. MacArthur 1968-6-18 212 Butte Along SE edge of Big Chico Creek, opposite LS bld., Chico State College campus. 60 Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  RSA78211  Cyperus eragrostis E. K. Balls, Percy C. Everett 1952-10-14 18217 -a Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 Comment
  CHSC81933  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  JEPS115040  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC76012  Cyperus esculentus Lowell Ahart; Vernon H. Oswald 1999-8-13 8141 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
  JEPS110330  Cyperus flavescens Lowell Ahart 2006-10-8 13429 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
  CAS-BOT-BC114223  Cyperus flavescens Lowell Ahart 1981-9-6 3123 Butte Arch Rock Tunnel, Feather River Highway. 500 Comment
  CDA2587  Cyperus fuscus L. Ahart, Vernon Oswald 1999-10-3 8287 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET4896966  Cyperus fuscus L. Ahart, V. H. Oswald 1999-8-13 8181 Butte 12 miles SW of Chico. Legal: T20N R1W Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CHSC51018  Cyperus squarrosus Lowell Ahart 1990-7-15 6563 Butte Along a small stream, 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
  UC1550  Cyperus squarrosus E. L. G. 1900-6-27 Butte Chico Comment
  CHSC38902  Cyperus strigosus Vernon Oswald 1983-6-20 724 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  CHSC51283  Cyperus strigosus Lowell Ahart 1990-10-3 6614 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC111164  Cystopteris fragilis Lowell Ahart 2012-6-21 18203 Butte High south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC39806  Cystopteris fragilis Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 Comment
  CHSC110336  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. 632 Comment
  CHSC109588  Dactylis glomerata Lowell Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CHSC6063  Dactylis glomerata B. Wilson 1968-5-3 188 Butte On edge of Rd. 0.5 mi n of Magalia. On Skyway. Comment
  SEINET10968264  Dactylis glomerata Mary Susan Taylor 1978-7-21 Taylor 1815 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
  CHSC65905  Damasonium californicum Vernon H. Oswald 1996-4-20 7411 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. Marshy drainage at the SW boundary of Tract 3.4, Sanctuary II. 32 Comment
  CAS-BOT-BC189895  Danthonia californica Lowell Ahart 1980-5-17 2288 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CDA34740  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte On the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CAS-BOT-BC420353  Darmera peltata C. C., Mrs. Bruce 1898-2-1 2410 Butte unspecified Comment
  CHSC23416  Datura wrightii K. Stern 1970-1-1 Butte S. end of Eddy Lake, Rancho Llano Seco. Comment
  CHSC117611  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-4-26 11937 Butte Sacramento Valley. Along Nelson Road 1.0 Road-km west off its bridge across Thermalito Forebay; where the road crosses Campbell Hills. 94 Comment
  CHSC44423  Delphinium hansenii subsp. hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  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
  POM193379  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  UCR133595  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CAS-BOT-BC17024  Delphinium variegatum Lewis S. Rose 1945-5-12 45046 Butte Richardson Springs 304 Comment
  SJSU3092  Delphinium variegatum A. Retan 1948-5-1 Butte near Oroville Comment
  UCD96667  Delphinium variegatum A. A. Heller 1918-4-19 12987 Butte 12 miles north of Chico. Comment
  CHSC65507  Delphinium variegatum subsp. variegatum Ron P. Garcia 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CAS-BOT-BC16980  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Low hills 8 miles north of Oroville below the Quercus Douglasii belt. Comment
  NY387586  Dendromecon leiophylla A. E. Bidwell 05 1879 s.n. Butte [illegible] Comment
  CHSC10711  Dendromecon rigida Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  CDA31662  Deschampsia danthonioides P. B. Kennedy 1914-5-1 Butte Chico 0 Comment
  CHSC28858  Deschampsia danthonioides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 461 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  POM365021  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at road forking to Chico Creek. Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  UCD63435  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville. 1500 Comment
  JEPS105645  Dianthus armeria subsp. armeria L. P. Janeway, B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy 1000 Comment
  CHSC13505  Dicentra formosa A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CHSC19643  Dicentra formosa Kingsley R. Stern 1966-4-14 Butte 15 mi. Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC402391  Dicentra formosa subsp. formosa Marion Ownbey 1964-4-21 s.n. Butte Collected by the banks of Heinz Creek, S side of the canyon of N. fork of the Feather River, ca. 1/2 mi. E of Poe Power Dam Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC2094  Dichelostemma capitatum subsp. capitatum N. Maxwell 1929-3-4 Butte Salmon Hole. 121 Comment
  CHSC41231  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1985-3-29 2185 Butte Immediately NE of the marsh area indicated on USGS map, ca. 1/2 mile north of Cottonwood Rd, NW of PG and E substation several hundred meters. Several miles northwest of Oroville. 45 Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  SEINET10533898  Dichelostemma congestum R. M. Austin Austin 37 Butte Mesa-east of Chico. Comment
  UC204578  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  POM215700  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor. Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC113803  Dichelostemma volubile M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CHSC2099  Dichelostemma volubile E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC4716  Dichelostemma volubile R. Carter 1966-4-30 387 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  SEINET4207208  Dichondra donelliana Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-8 3312 a Butte North Honcut Creek, Ahart Ranch about 2.5 mi NE of Honcut between Marysville & Oroville.; 0 46 Comment
  CHSC94982  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 Butte East side of the North Fork of the Feather River, about 50 yards north 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
  SEINET10836173  Digitaria sanguinalis Mary Susan Taylor 1979-10-2 Taylor 2209 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CAS-BOT-BC153763  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC10601  Diplacus douglasii Lowell Ahart 1961-3-16 Butte Salmon Hole. 91 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  SEINET8255118  Diplacus douglasii Lowell Ahart 1973-1 172 Butte Peter Aahrt Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 46 Comment
  CAS-BOT-BC150501  Diplacus grandiflorus John Thomas Howell 1951-6-26 27509 Butte Feather River Canyon 198 Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CHSC1753  Diplacus grandiflorus R. M. Staley 1952-7-5 Butte Butte Creek. 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
  CHSC2256  Disporum hookeri N. Maxwell 1929-5-11 Butte Comment
  HSC102776  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley; South end of Chico, along west side of Hwy. 99; 0.6 km south of Skyway/East Park Ave., and 0.3 km south of Comanche Creek 66 Comment
  CAS-BOT-BC136236  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  SD3639  Dodecatheon alpinum E. B. Copeland 1930-6-26 Butte Jonesville, grassy swamp 1550 Comment
  CHSC41262  Dodecatheon jeffreyi S. C. Morey 1983-7-21 481 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  SEINET7072737  Downingia bacigalupii A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  JEPS127060  Downingia bicornuta var. bicornuta Lowell Ahart 2016-5-17 20842 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  CHSC87196  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  CHSC2377  Downingia ornatissima var. ornatissima R. Carter 1965-5-13 198 Butte Exact location unknown, but found somewhere along the Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC109119  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  CHSC94338  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard ... Field redacted by CHSC, contact the data manager for more information 1569 Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  UCD123980  Drosera rotundifolia Barry Rice 2011-7-6 BR 110702 Butte no exact location. 1400 Comment
  UCD170794  Drosera rotundifolia Barry Rice 2017-9-4 BR- 170901 Butte Butte Creek. 1500 Comment
  JEPS104145  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  SEINET10530140  Dryopteris arguta Mary Susan Taylor 1979-10-13 Taylor 2267 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  UCD136405  Dryopteris arguta M. S. Taylor 1980-3-8 2376 Butte Pulga community, ca. 1 mile NE of Hwy 70, ca. 28 mi. NE of Oroville. 487 Comment
  CHSC111982  Dudleya cymosa subsp. cymosa Lowell Ahart 2012-6-2 18133 Butte Along the sides of Truex Road, w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 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
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  SEINET10509316  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 B 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
  CHSC34025  Echinodorus berteroi L. Ahart 1981-7-26 3014 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt. HQ, ca. 12 mi sw of Gridley. 35 Comment
  SEINET10465417  Echinodorus berteroi Mary Susan Taylor 1977-8-16 Taylor 1451 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  JEPS124280  Egeria densa Lowell Ahart 2015-11-18 20653 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS122149  Elatine Lowell Ahart 2014-8-8 19697 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 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
  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
  CHSC115359  Elatine americana Lowell Ahart 2015-3-26 19966 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28856  Eleocharis acicularis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 458 Butte Ca. 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  HSC97770  Eleocharis acicularis L. Ahart 2000-10-2 8699 Butte N of large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 mi. SW of Chico 32 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC51022  Eleocharis bella Lowell Ahart; Vern Oswald 1990-7-5 6550 b Butte Small meadow, about 1/2 mile north of Butte Creek House, about 2 miles north-east of Snag Lake. 1828 Comment
  CHSC39542  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC109771  Eleocharis macrostachya Lowell Ahart 2012-10-28 18534 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC44930  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte Along the bottom of a road gutter, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC55616  Eleocharis parishii C. A. Janeway 1986-10-25 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CAS-BOT-BC112065  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut. 39 Comment
  CDA38981  Eleocharis radicans L. Ahart 2000-8-3 8677 Butte Southeast of a large pond, about 100 yards south of the Feather River, west 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
  SEINET13709637  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8677 Butte Feather River, 1/2 Mi. W of Pacific Heights Rd., Oroville Wildlife Area, 3.3 Mi. SW Oroville (T19N, R3E, S 34, SE 1/4) 140 Ft 43 Comment
  CHSC44441  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC40457  Elymus elymoides subsp. elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  UC204881  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  SEINET10661843  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 Ahart 10959 Butte T17N, R4E, northeast 1/4 Section 11. On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CAS-BOT-BC234106  Elymus multisetus John Thomas Howell 1955-6-14 30461 Butte Magalia 731 Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC44912  Elytrigia intermedia subsp. intermedia Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  CHSC108856  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CHSC45419  Enemion occidentale Lowell Ahart 1971-3-26 67 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway. 243 Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  CAS-BOT-BC165910  Epilobium John Thomas Howell 1959-9-26 35085 Butte Arch Rock, N. Fk. Feather River 457 Comment
  SEINET10453209  Epilobium adenocaulon var. parishii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4212 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC26660  Epilobium brachycarpum M. S. Taylor; M. Hayes 1977-8-19 1504 Butte In Cambell slough, ca. 3 mi e of jct of Hwys 42 and 162, on Hwy 162. 30 Comment
  POM305913  Epilobium brachycarpum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 1107 Butte Feather River Hwy. Comment
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  CHSC36295  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  SEINET10453053  Epilobium canum subsp. latifolium Mary Susan Taylor 1982-8-16 Taylor 5017 Butte T24N R5E nw/nw sec 17. Pulga NW quad. S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. Riparian; 4700 ft. 1432 Comment
  UC600555  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  CHSC111153  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC28386  Epilobium densiflorum J. D. Jokerst 1979-10-12 378 Butte 50 met. E. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  CHSC46574  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1987-7-16 3132 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. On the edge of the creek. 1487 Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  CHSC70342  Epilobium minutum R. A. Schlising 1980-6-17 3732 a Butte Along Skyway, N of Magalia and De Sabla, ca. 1.5 mi SW of junction with Coutelenc Road at Lovelock. 780 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  SEINET1783079  Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  CHSC112241  Equisetum laevigatum Lowell Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC29223  Equisetum laevigatum M. S. Taylor; J. D. Jokerst 1980-3-15 2384 Butte Jct of Clear Creek Rd and Clear Creek, ca. 200 ft se of its jct with Clark Rd, ca. 7 mi sw of Paradise. 115 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  SEINET260321 Image available Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Rd ca 2.5 mi NE of Bangor 274 Comment
  CHSC65187  Eragrostis hypnoides Lowell Ahart 1995-8-19 7614 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC38820  Eragrostis pectinacea var. pectinacea Vernon Oswald 1983-6-18 710 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  SEINET10555837  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Scaramento River, ca. 10 mi W of Chico. 37 Comment
  CHSC110382  Eragrostis pilosa var. pilosa Lowell Ahart 2012-8-22 18421 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 Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC83171  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Meadow along road. Comment
  CHSC97742  Eragrostis pilosa var. pilosa Lowell Ahart 2007-11-3 14560 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS95983  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 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
  CHSC92524  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-10 1217 Butte South of Middle Fork Feather River. Generally on the east side of the canyon, along road 22N62. UTM 10 S 650439, 4397298. 950 Comment
  JEPS127580  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 km north of Forbestown Road. Forbestown 7.5' Quad. Comment
  CHSC28542  Ericameria nauseosa var. speciosa M. S. Taylor; J. D. Jokerst 1979-10-13 2261 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC48145  Erigeron annuus V. Oswald; L. Ahart 1988-6-17 3391 Butte North side of the dam at Lost Creek Reservoir. 1005 Comment
  JEPS87160  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
  CHSC48151  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the edge of a streamley draining the largest lake into Butte Creek. 1935 Comment
  UC201340  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  UC1562351  Erigeron petrophilus var. viscidulus Vernon Oswald and Lowell Ahart 1990-7-31 4414 Butte 2 mi ne Concow (on Jeep Trail between Concow Road and Rim Road) 902 Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  CHSC40479  Erigeron strigosus Lowell Ahart 1985-7-24 5155 Butte Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  UC1562368  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 Butte in the borrow area about 4/10 mi w of Pacific Heights Road about 4 1/2 mi sw Oroville (1/4 mi s of the Feather River); s of the Feather River, sw of Oroville 30 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC45099  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte On a large road cut along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  UCD100307  Eriogonum luteolum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside of Magalia Res. 310 Comment
  CHSC105794  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
  SBBG128101  Eriogonum nudum var. oblongifolium L. Ahart 2010-9-12 17149 Butte below the high water line of Lake Oroville, ca. 150 yards N of the S Fork of the Feather River, ca. 50 yards E of Sucker Crk, ca. 0.25 mi NW of the Ponderosa Dam 243 Comment
  SEINET10479531  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1975-9-19 Taylor 916 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC32140  Eriogonum nudum var. pubiflorum L. Ahart 1977-10-19 1605 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in open pasture fields, it can also be found on small gravel bars along small washes and on dredger piles along North Honcut Creek. 50 Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  RSA0089890  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection, Highway 70. 457 Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  UC849667  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte along Feather River Highway 23 mi from Oroville Comment
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC33787  Eriophyllum lanatum var. croceum M. S. Taylor; L. Hanson 1981-4-10 3520 Butte On e side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC31735  Erodium botrys L. Ahart 1978-3-21 1619 Butte Near the North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8526725  Erodium botrys R. R. Halse 2002-3-27 6154 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy ca. 8 miles NW of Chico Comment
  SEINET7057334  Erodium botrys Richard R. Halse 2002-3-27 6154 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway ca. 8 miles northwest of Chico. Elevation 40 meter. 40 Comment
  CHSC101084  Erodium brachycarpum Lowell Ahart; John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  JEPS94666  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 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
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC105770  Erythranthe glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km NE of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  CHSC110634  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain. Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Crpenter Ridge Rd. intersection along old logging road. 880 Comment
  CHSC1789  Erythranthe glaucescens H. Summers 1929-3-25 Butte Butte Creek. Comment
  CHSC45725  Erythranthe glaucescens Phillip Scott 1988-4-18 38 Butte Mud Creek Bridge, Meridian Way ca. 3 mi w of Chico. 42 Comment
  CHSC11898  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  CHSC3538  Erythranthe guttata John Francis 1996-3-21 87 Butte 1.8 miles from intersection of Hwy. Alt. 40 and Coal Canyon Rd., on Coal Canyon Rd. Comment
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. Comment
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  SEINET10469660  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3473 Butte T20N R6E se sec 15; Forbestown quad. S side of Rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Yellow Pine Forest opening; 2500 ft. 762 Comment
  SEINET10469669  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3462 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CHSC31345  Erythronium multiscapideum Howard Paul 1980-4-6 5 Butte To the s side of Humbug road, ca. 1.5 mi e of the Centerville cemetery, 20 mi e of Chico. 365 Comment
  CHSC87535  Erythronium multiscapideum R. D. Fischer 2004-3-22 91 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and parking area for 10 Mile House Road 300 ft down rd. 457 Comment
  CAS-BOT-BC504524  Erythronium multiscapideum C. C., Mrs. Bruce 1898-5-1 2011 Butte Butte Creek 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
  CAS-BOT-BC402639  Eschscholzia caespitosa A. A. Heller 1938-4-17 15041 Butte Slope back of Salmon Hole, Chico Creek 152 Comment
  CAS-BOT-BC402646  Eschscholzia caespitosa Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 45 Butte On North Table Mtn., S of Paradise on Cherokee Rd., at the east end of Table Mtn. Proper 381 Comment
  CAS-BOT-BC402972  Eschscholzia californica Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  CHSC45027  Eschscholzia lobbii Sameena S. Klan 1988-3-7 20 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  UC1303043  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte about 4 mi below Paradise (along the Neal road) Comment
  UCR237308  Eschscholzia lobbii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18759 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
  HSC66209  Eschscholzia lobbii D. L. Daniels 1979-3-23 13 Butte 50 ft. W of Bruce Rd. and 80 ft. N of Skyway, 1 1/2 mi. SE of Chico on Skyway 91 Comment
  SEINET12094432  Eschscholzia lobbii Unknown 1988-1 12 Butte ca 4 mi E of Hwy 70 on Palermo Rd., 4 mi S of Palermo Honcut Hwy., .1 mi E on Melody Lane 41 Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  CHSC44277  Euonymus occidentalis var. occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. Near the creek. 1028 Comment
  SEINET10475035  Eupatorium occidentale Mary Susan Taylor 1980-8-2 Taylor 3216 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10453755  Euphorbia crenulata Mary Susan Taylor 1980-5-8 Taylor 2615 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC202419  Euphorbia ocellata Lowell Ahart 1976-7-4 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC101135  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CAS-BOT-BC310672  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC20093  Fatsia japonica M. S. Taylor 1975-4-8 450 Butte On ne side of Administration Building, California State University, Chico. 60 Comment
  CHSC93854  Festuca Lowell Ahart 2006-5-19 12635 Butte Road gutter, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  SEINET10508574  Festuca californica Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC106593  Festuca elmeri B. Castro; L. P. Janeway 2001-3-17 1267 Butte Along USFS Rd 23N28, about halfway between Coyote Gap and Big Bar Mtn. 1249 Comment
  UCD18733  Festuca microstachys Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 26 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site, UTMs: 10S0624439; 4384482. Comment
  JEPS110211  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte 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. 1587 Comment
  CAS-BOT-BC278629  Festuca subulata Lowell Ahart 1981-9-15 3159 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  UCD80548  Festuca subuliflora CNPS SN Foothill Team 2006-6-6 Survey Butte BLM, Parcel NE of Paradise. Comment
  CHSC115405  Ficus carica M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 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
  JEPS117926  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Undesignated section of Arroyo Chico Land Grant;ca. 6.0 air miles west by southwest of Chico ca. 2.3 air miles south of State Hwy 32, east Sacramento River, Bidwell-Sacramento River State Park; Northen Sacramento Valley Comment
  CHSC27221  Forsythia suspensa var. fortunei P. Moyer; R. Pessner 1972-3-11 115 Butte Footpath 100 ft. from L.S., s bank Chico Creek. CSUC Campus. 60 Comment
  CHSC13519  Fragaria vesca A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CHSC109568  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  JEPS120081  Fraxinus Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18111 Butte Along the paved park road, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CHSC108992  Fraxinus dipetala Lowell Ahart 2012-4-30 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  POM76517  Fraxinus latifolia C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  JEPS55691  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte Pinkston Canyon, Yankee Hill, Big Bend Road Yankee Hill; Pinkston Canyon, Yankee Hill 609 Comment
Read comments
Feb 23 2012
  CHSC79871  Fritillaria affinis Simona Altman 1999-2-27 18 Butte Bidwell Park, S. side of Big Chico Cr. 121 Comment
  CHSC4080  Fritillaria eastwoodiae J. E. Bowlin 1967-4-10 17 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  SEINET10905373  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3475 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
  CHSC33392  Fritillaria pluriflora Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County, off Cana-Pine Creek Road. 57 Comment
  CHSC37264  Galium aparine L. Ahart 1982-6-15 3569 Butte Ca. 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC42432  Galium aparine Lowell Ahart 1987-5-9 5579 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
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  UCD121668  Galium aparine K. Esau; M. Phillips 1929-4-13 1919 Butte Chico. Comment
  UCR190819  Galium aparine 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
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  JEPS52658  Galium bolanderi Lauramay T. Dempster 1964-7-24 4048 Butte road above Jonesville 1658 Comment
  JEPS6576  Galium bolanderi Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4721 Butte along Nimshew rd 1.1 <mi?> below junction with main Magalia-Stirling road (0.3 mi above Nimshew) 792 Comment
  POM193331  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC36162  Galium porrigens var. tenue Linyi Maslin 1981-3-25 6 Butte Bank SE of Butte Creek Canyon off Skyway between Chico and Paradise. 242 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  SEINET10500738  Galium porrigens var. tenue Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5233 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
  UC1562433  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte below high-water line Lake Oroville (e of the Enterprise boat launch area, about 1/8 mi nw of the Enterprise Bridge across Lake Oroville) 259 Comment
  CHSC23138  Garrya fremontii M. S. Taylor 1976-2-25 1005 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC40353  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte On a steep slope a little below the road, east of Magalia. 750 Comment
  CHSC77052  Garrya fremontii L. P. Janeway 2000-1-29 6629 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  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
  UCD80552  Gastridium phleoides CNPS SN Foothill Team 2005-5-3 SNFN 0198 b Butte City of Chico, Doe Mill Meadowfoam Preserve, Ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CHSC31051  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  SEINET10453076  Gayophytum humile Mary Susan Taylor 1978-7-19 Taylor 1779 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC51884  Gentianopsis simplex L. P. Janeway 1988-7-29 3120 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 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
  CHSC109068  Geranium carolinianum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  RSA31676  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte along the Feather River Highway, 22 miles from Oroville Comment
  POM74343  Gilia capitata subsp. pedemontana Anonymous 1897-1 s.n. Butte Chico. Comment
  CHSC28914  Gilia tricolor M. S. Taylor 1980-3-1 2350 Butte On bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  SEINET12326974  Gilia tricolor L. D. Curtis 1982-1 31 Butte 88 Comment
  UCD22631  Gilia tricolor Joseph Laferriere 1982-4-18 15 Butte Table Mountain, off Cherokee Rd., 5 miles NE of Oroville. 396 Comment
  CHSC21741  Githopsis pulchella Robert A. Schlising 1964-6-11 2723 Butte Few miles south of Paradise along Honeyrun Road. Comment
  CHSC96244  Githopsis pulchella subsp. campestris R. Fischer 2006-5-27 994 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  CHSC62542  Githopsis specularioides L. P. Janeway 1993-5-2 4336 Butte Serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC82427  Githopsis specularioides Lowell Ahart 2002-5-7 9616 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
  UC129448  Glechoma hederacea Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC44455  Glyceria occidentalis Lowell Ahart 1988-5-29 6014 Butte Bottom of a wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  CHSC78959  Glyceria occidentalis Lowell Ahart 2000-10-21 8713 Butte About 100 feet north of Hmilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA0037016  Gnaphalium palustre Lowell A. Ahart 2013-11-17 19258 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  SEINET10475272  Gnaphalium thermale Mary Susan Taylor 1979-10-5 Taylor 2233 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
  CHSC108148  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  RSA770729  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg ) of Gridley 34 Comment
  SEINET10475566  Grindelia hirsutula var. davyi Heidi H. Schmidt 1993-6-15 Schmidt 864 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  JEPS98981  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  UC600450  Hackelia nervosa H. F. Copeland 1932-6-27 Butte near Butte Creek House; Jonesville Comment
  JEPS105605  Hamamelis vernalis L. P. Janeway, John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek 299 Comment
  CHSC42825  Hastingsia alba L. P. Janeway 1987-6-11 2184 Butte 3.0 mi south of Big Bar Mtn via road. 1021 Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CHSC78122  Hedypnois cretica Lowell Ahart 2000-5-31 8429 Butte Below the high water line of Lake Oroville, about 400 yards est of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  JEPS117210  Hedypnois rhagadioloides Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  CHSC42390  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC50988  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte On the north side of the old paved road to Feather Falls, below the high water line of Lake Oroville, west of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 268 Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  UC478462  Helianthella californica subsp. nevadensis E. B. Copeland 1931-6-22 695 Butte at the Summit; Jonesville Comment
  CAS-BOT-BC305518  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CHSC102400  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  SEINET10475210  Hemizonia fitchii Mary Susan Taylor 1980-8-30 Taylor 3321 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
  CHSC20715  Heracleum lanatum M. S. Taylor 1975-8-31 877 Butte On Ernies Island, ca. 50 ft s of Humboldt Rd in Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SD64391  Hesperocyparis macnabiana Darley F. Howe 1966-9-1 Butte Magalia 580 Comment
  CHSC66953  Hesperolinon californicum James D. Jokerst 1992-5-19 3360 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. 97 Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  CHSC47435  Hesperolinon micranthum Lowell Ahart 1979-5-29 1890 Butte About 1/4 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  RSA107430  Hesperolinon micranthum L. S. Rose 1955-6-15 55100 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. 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
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  JEPS94303  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CHSC40325  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  RSA0119324  Heterotheca grandiflora Lowell A. Ahart 2014-11-17 19912 Butte Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 254 Comment
  RSA718792  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SBBG28522  Hieracium albiflorum E. B. Copeland 1930-7-16 Butte Jonesville 1600 Comment
  SBBG8433  Hieracium albiflorum H. and M. Dearing 1938-6-21 2053 Butte 21 mi NE of Chico Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CHSC109750  Hirschfeldia incana Lowell Ahart 2012-10-28 18533 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC92536  Holodiscus discolor L. P. Janeway; M. Brown, S. Mackey Hillaire, L. Hanson 2005-4-25 8370 Butte Northern High Sierra Nevada. Plumas National Forest; north end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 1.4 road km southeast of junction with Concow Road. 1036 Comment
  UCD113340  Holodiscus discolor var. microphyllus H. F. Copeland 1928-8-14 s.n. Butte Bet. Jones Creek and Scotch-John Creek, near Jonesville. Comment
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CHSC25466  Holodiscus microphyllus var. glabrescens Hayes; Warner 1977-9-11 88 Butte Near the top of Humboldt Peak, on the Butte-Tehama County line. 2151 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 Comment
  CHSC38824  Hordeum murinum subsp. leporinum Vernon Oswald 1983-3-5 114 Butte Upper Bidwell Park, Chico, at the edge of the turn-around on the road to the Horse Arena. 82 Comment
  CHSC29838  Horkelia californica subsp. dissita M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2765 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  POM319240  Horkelia tridentata Patricia Wilder 1971-6-23 5208 Butte Oregon Hill road 4.1 miles SE of Challenge, W of California State Hwy 49. W slope of the Sierra Neveda, Yuba River 732 Comment
  UC860239  Horkelia tridentata subsp. tridentata A. A. Heller 1914-5-18 11413 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC60979  Hosackia stipularis var. ottleyi Lowell Ahart 1993-6-16 6966 Butte Southwest of the intersection of Balck Bart Road and Forbestown Road, about 3 1/2 (air) miles southwest of Forbestown. Common. Yellow Pine Forest. 609 Comment
  CHSC106255  Hydrocotyle sibthorpioides L. P. Janeway 2010-6-9 9994 Butte Sacramento Valley. Chico; southeast corner of Citrus Avenue and Mansion Avenue, area between sidewalk and curb. 61 Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  CHSC12408  Hypericum anagalloides Lowell Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34160  Hypericum anagalloides L. Ahart 1981-8-31 3055 Butte In seep near the Black Bart Rd, ca. 1 mi w of the jct of Black Bart Rd and Oroville-Forbestown Rd, w of Forbestown. 750 Comment
  CHSC41257  Hypericum anagalloides S. C. Morey 1983-7-21 476 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA0045597  Hypericum anagalloides Lowell Ahart 2012-6-9 17575 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC48480  Hypericum formosum var. scouleri Vernon Oswald 1983-7-26 917 Butte Near Soda Springs Campground off of Calif. Hwy 32, 18.1 mi n=e of Forest Ranch. Growing in a wet, marshy spot beside Chico Creek. 1158 Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  RSA716404  Hypericum mutilum L. Ahart 2005-8-14 12331 Butte Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CHSC29113  Hypochaeris glabra M. S. Taylor; J. D. Jokerst 1980-4-6 2454 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS115302  Hypochaeris glabra Lowell Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  CAS-BOT-BC133557  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  CHSC27339  Iris hartwegii subsp. hartwegii T. B. Devine 1977-6-5 420 Butte Growing in forest beside Humbug Road. 853 Comment
  CHSC61244  Iris hartwegii subsp. hartwegii K. B. McShea 1992-4-23 13 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  SD111888  Isoetes howellii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch, ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfield near pond 29 Comment
  UCD135856  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles northeast of Bangor and ca. 15 miles southeast of Oroville. 342 Comment
  CAS-BOT-BC61868  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte East branch of Potter Ravine, on the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  UCD72991  Isoetes orcuttii 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
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC55622  Isolepis setacea L. P. Janeway 1987-6-19 2246 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
  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
  CHSC96880  Juncus Lowell Ahart 2007-6-12 14079 Butte Along the north edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w 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
  UCD141317  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  SEINET10472241  Juncus bufonius Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4096 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CHSC61515  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. Comment
  JEPS122278  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC31838  Juncus bufonius var. congestus L. Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. Bottom of a small swale in a farmed field. 50 Comment
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC90947  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  JEPS87149  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 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
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  JEPS119699  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  CHSC108323  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1225 Comment
  CHSC40003  Juncus effusus subsp. pacificus Lowell Ahart 1983-8-16 4299 Butte Found along the edges of a small bog, near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC99750  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SBBG121547  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte ca. 30 yards S of Oroville Dam Blvd, ca. 0.25 mi SW of old overlook, ca. 4 mi NE of Oroville 166 Comment
  CHSC102830  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS118084  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 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. Meadow in Yellow Pine Forest 1133 Comment
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 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
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  UCSB63740  Juncus howellii Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west of the cow chute on the west side of Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  CHSC42090  Juncus kelloggii Lowell Ahart 1980-5-13 2263 Butte Below a seep, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  CHSC78212  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte In tire ruts on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC113938  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte On the bottom of a small drainage, south of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CAS-BOT-BC312670  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte Table Mt. 400 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC49617  Juncus leiospermus var. ahartii Vernon Oswald 1986-4-20 1974 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In vernal pool. 32 Comment
  UC1543895  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CAS-BOT-BC110137  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-29 1895 Butte Sierra Nevada. Near Krinkle Reservoir, ca. 2.5 miles southeast of Paradise. 500 Comment
  CHSC113202  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 424 Comment
  CHSC113242  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 392 Comment
  CHSC70855  Juncus leiospermus var. leiospermus Lowell Ahart 1998-4-29 7953 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  CHSC93497  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12585 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 395 Comment
  RSA712818  Juncus leiospermus var. leiospermus L. Ahart 2006-5-3 12558 Butte About 5/8 mile north of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles north of Oroville. 405 Comment
  CHSC41288  Juncus nevadensis S. C. Morey 1983-7-21 495 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  POM110898  Juncus oxymeris C. C. Bruce, J. Bruce 1897-05 1884 Butte Chico ion Humboldt road Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  JEPS113857  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  CHSC96975  Juncus usitatus Lowell Ahart 2007-7-11 14290 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS113743  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley 24 Comment
  JEPS113748  Juncus usitatus Lowell Ahart 2007-7-11 14292 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC27160  Juniperus chinensis var. pfitzeriana M. MacArthur 1968-6-22 284 Butte SE wall of PSA Bldg. On CSUC campus. 60 Comment
  CHSC61016  Keckiella breviflora var. glabrisepala Lowell Ahart 1993-6-26 7041 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 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
  SEINET10968831  Kelloggia galioides Mary Susan Taylor 1977-8-17 Taylor 1484 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  JEPS119918  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  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
  CHSC28910  Kumlienia hystricula M. S. Taylor 1980-2-17 2367 Butte In embankment of creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC41996  Kumlienia hystricula Lowell Ahart 1975-3-7 707 Butte Along a small stream, along Ponderosa Way, about 2 miles south of the Ponderosa Dam, north-west of Forbestown. 426 Comment
  UC426991  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  UCD133503  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC102720  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC28570  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2280 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC31920  Lactuca serriola M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3377 Butte On road embankment, e side of Lumpkin Rd, ca. 200 ft n of Macabes Creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. 457 Comment
  CHSC38366  Lactuca serriola Vernon Oswald 1983-6-27 773 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  CHSC38368  Lagophylla glandulosa Vernon Oswald 1983-7-15 870 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1600 ft e of the parking lot at Salmon Hole. 182 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341307  Lagophylla glandulosa H. M. Hall 1930-8-10 12872 Butte Roadside near Oroville Comment
  CHSC41773  Lamium amplexicaule Lowell Ahart 1986-11-7 5420 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC48484  Lamium amplexicaule Vernon Oswald 1984-2-27 1085 Butte Upper Bidweel Park, Chico, in the 'new day camp' area to Hooker Oak Recreation Area. 79 Comment
  RSA0060802  Lamium purpureum Lowell A. 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. 61 Comment
  CHSC65891  Lasthenia californica Vernon H. Oswald 1996-4-20 7395 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  CAS-BOT-BC337906  Lasthenia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 2 Butte On North Table Mtn., S of Paradise on Cherokee Rd., at the east end of Table Mtn. Proper 381 Comment
  CDA8113  Lasthenia fremontii T. C. Fuller 1958-4-15 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC46247  Lasthenia glaberrima Vernon Oswald 1989-4-27 3750 Butte Wurlitzer Unit, Vina Plains Preserve. North of the woodland and E of Cana-Pine Creek Rd. 56 Comment
  SEINET12765126  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CHSC74087  Lathyrus brownii L. Gehrung; E. Hubert 1996-7-17 Butte Ca 2 air mi NNW of town of Brush Creek, on Mosquito Ridge, on N side of USFS Rd 22N96X. In large clearcut area on SW side of tributary to Ram Creek. 792 Comment
  RSA715575  Lathyrus jepsonii subsp. californicus L. Ahart 2005-4-14 11699 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS119626  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC25009  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CHSC42560  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET956196  Lathyrus sulphureus Lowell Ahart 1987-1 5621 Butte South of the Forbestown Ditch, about 2.5 miles north-east of Forbestown. 869 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 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
  CHSC38373  Layia fremontii Vernon Oswald 1983-3-14 185 Butte Upper Bidwell Park, Chico, on the north rim about 2000 ft w of the power lines. Along the edge of a jeep trail. 188 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
  UC304001  Layia fremontii H. E. Brown 1897-4-15 184 Butte Clear Creek 53 Comment
  UC1594555  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CDA32427  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs 0 Comment
  JEPS98546  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near 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
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  JEPS114714  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-21 14768 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS94431  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork of the Feather River 914 Comment
  CAS-BOT-BC339121  Leontodon saxatilis subsp. saxatilis John Thomas Howell; Gordon H. True 1967-6-13 42593 Butte Oroville 51 Comment
  CHSC103735  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC29836  Lepechinia calycina M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2768 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  SEINET13946688 Image available Lepechinia calycina A. A. Heller 1915-1 11906 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC35764  Lepidium appelianum R. A. Schlising; J. D. Jokerst 1982-6-4 4287 Butte N of Oroville and n of Jarbo Gap along Hwy 70 above Feather River Canyon. Roadside. Comment
  CAS-BOT-BC88807  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC48335  Lepidium latifolium Vernon Oswald 1983-6-28 787 Butte Graylodge Waterfowl Management Area, in Parking Lot #3. Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CHSC10840  Lepidium nitidum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40530  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  SEINET10841497  Lepidium perfoliatum Lowell Ahart 1984-6-8 Ahart 4680 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Rd, ca. 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown; Yellow Pine Forest. 500 Comment
  CHSC51515  Leptochloa fusca subsp. fascicularis M. Bailey 1990-10-16 417 Butte NW side of fence behind fire training area, Butte College campus. 91 Comment
  CHSC75986  Leptochloa fusca subsp. fascicularis Lowell Ahart; Vernon H. Oswald 1999-8-13 8153 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  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
  RSA468553  Leptosiphon androsaceus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC54187  Leptosiphon bicolor Vernon H. Oswald; Lowell Ahart 1991-5-31 4634 Butte Dan Beebe Trail in the Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool, between Oroville Dam Blvd. East and Glen Pond. 91 Comment
  CHSC34990  Leptosiphon bolanderi R. A. Schlising 1981-4-7 4019 Butte NE of Chico and S of Forest Ranch; 2.1 mi N of jct with Humboldt Road, along Hwy 32. Comment
  CHSC40749  Leptosiphon filipes A. A. Heller 1938-6-14 15154 Butte 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  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
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  OBI4876  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi W of Oroville 46 Comment
  UC1287453  Lessingia virgata Willard Spence 1960-9-7 625 Butte Alternate Rt. 40 7 mi s Oroville Comment
  POM196087  Leucophysalis nana H. F. Copeland 1929-6-9 1228 Butte Jonesville. 1524 Comment
  CHSC43879  Leucothoe davisiae L. P. Janeway 1987-6-26 2306 Butte Edge of man-made pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  POM101883  Lewisia rediviva C. C. Bruce 1887-04 s.n. Butte Cherokee Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CAS-BOT-BC436016  Ligusticum grayi R. Carter 1966-6-15 444 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd., ca. 5 yds. off road 1097 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
  JEPS117613  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 iles (air) northeast of Oroville 398 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
  UC726301  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte river nw Chico Comment
  CHSC38881  Lilium humboldtii subsp. humboldtii Vernon Oswald 1983-6-9 659 Butte Upper Bidwell Park, Chico, near Brown's Hole. ... Field redacted by CHSC, contact the data manager for more information 195 Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CAS-BOT-BC133047  Lilium washingtonianum subsp. washingtonianum A. A. Heller 1928-6-28 14670 Butte On the ridge south Butte Creek, Butte Meadows 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
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  SEINET6670254  Limnanthes alba M. Plotkin 1997-3-21 12 b Butte Northeast of Chico Municipal Airport, south of dirt road diverging east from Hicks Road where Hicks Road makes a sharpturn west, 100 feet east of airport fence 91 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
  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
  POM253300  Limnanthes douglasii A. A. Heller 1938-3-27 15005 Butte Along U.S. Highway 99E, junction with the Cana road. Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  CHSC1008  Limnanthes douglasii subsp. rosea Edna Canfield 1904-4-9 Butte Hooker Oak Field. 76 Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  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
  CHSC67551  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3044 Butte Cohasset population E and adjacent to Cohasset Rd. ca. even with N end of Chico Municipal Airport runway. Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC246141  Limosella aquatica Lowell Ahart 1982-5-1 3400 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 1/10 mile east of Honcut 50 Comment
  SEINET10496786  Linanthus bakeri Mary Susan Taylor 1980-5-31 Taylor 2760 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  UC1377647  Linanthus bolanderi John Ingram and Arlynn Ingram 1960-4-5 293 Butte about 2 mi s Paradise (along Neal Road) Comment
  UC1586577  Linanthus bolanderi Vernon H. Oswald and Lowell Ahart 1991-6-5 4644 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SEINET10496794  Linanthus ciliatus Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4645 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC38596  Linanthus dichotomus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  RSA0096836  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  SEINET12327002  Linanthus filipes R. E. Alumbaugh 1984-1 5 Butte 6.4 mi E of Hwy 99 and ca 150 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  CHSC112538  Lindernia dubia var. anagallidea B. Castro 2014-7-16 2033 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 50 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC112742  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 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
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC50689  Lindernia dubia var. anagallidea Lowell Ahart 1990-5-25 6485 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC51016  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC84014  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 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
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC31671  Lipocarpha micrantha L. Ahart 1973-8-13 271 Butte In North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29729  Lithophragma bolanderi J. D. Jokerst 1980-4-21 623 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC35994  Lithophragma bolanderi J. D. Jokerst 1982-5-19 1577 Butte Southern edge of Lumkin Ridge. 1280 Comment
  RSA638247  Lithophragma bolanderi Michael A. Vincent, Ethan H. Freid 1998-4-6 8135 Butte Table Mountain Comment
  CAS-BOT-BC430886  Lithophragma bolanderi M. S. Taylor 16/IV/1980 2496 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC48896  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-5-14 2397 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  CHSC4085  Lithophragma parviflorum J. E. Bowlin 1967-4-14 22 Butte Near the railroad tracks, ca. 30 feet from Skyway and ca. 1.8 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC31867  Lithophragma parviflorum var. trifoliatum L. Ahart 1974-3-18 328 Butte Near a large rock, near Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94024  Lithophragma parviflorum var. trifoliatum R. D. Fischer 2005-4-9 729 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  POM91968  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1897-04 18441 Butte [No locality information provided] Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  CAS-BOT-BC316346  Lithospermum californicum Wayne Roderick 1967-4-15 s.n. Butte In Pinkton Canyon, Feather River. 609 Comment
  CAS-BOT-BC342386  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  CHSC66461  Lolium multiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7734 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
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC49556  Lolium temulentum var. leptochaeton Vernon Oswald 1984-6-3 1253 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On a sandbar on the edge of the river. 39 Comment
  HSC92492  Lomatium caruifolium var. denticulatum Jeanne MacFarland, Kathie Meyer & Anne Mullenniex 1995-4-9 57 Butte S of Paradise at intersection of Cherokee Rd and Pentz Rd. 381 Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  CHSC3151  Lomatium dasycarpum subsp. tomentosum Dona Kingsford 1966-4-23 Butte Location: 2.3 miles SW of Hooker Oak Tree, Chico. Comment
  UCD127633  Lomatium dasycarpum subsp. tomentosum L. Ahart 1975-5-12 768 Butte along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC25359  Lomatium utriculatum Marc P. Hayes 1977-4-22 7 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 80 m from juncture with Hwy 70. 495 Comment
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  CHSC2406  Lonicera interrupta R. Carter 1964-5-27 105 Butte 8 mi. E of Oroville, 200 yds. up Wakefield Dr. off Feathervale on N side of road. 121 Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  UC139418  Lonicera involucrata var. involucrata Mrs. R. M. Austin July 1896 679 Butte Colby Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  UC1609418  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  SEINET10451997  Lotus nevadensis Mary Susan Taylor 1981-5-15 Taylor 3748 Butte T22N R5E nw/ne sec 28, Berry Creek quad. Edge of landing at short spur off Chino Ridge Rd (22N28), near Last Chance Creek, ca. 4 air mi due E of Jarbo Gap on Feather River Hwy 70. Granitic soils; 2800 ft. 853 Comment
  SEINET10940035  Lotus nevadensis Lowell Ahart 1985-5-31 Ahart 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  RSA754938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-8 14716 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  SEINET2062315 Image available Lotus oblongifolius Marc Mittleman 1980-8-1 226 Butte Little Chico Creek adjacent to china Garden Springs. 262 Comment
  UC862230  Lotus purshianus var. purshianus A. A. Heller 1916-9-8 12651 Butte e of Chico (Ten-Mile House) Comment
  SEINET10874113  Lotus subpinnatus Mary Susan Taylor 1978-5-7 Taylor 1616 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  RSA406345  Lotus wrangelianus M. M. Boney 1897-1 1724 Butte Butte Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  JEPS93819  Ludwigia palustris Lowell Ahart 1998-6-30 8013 Butte about 7 air mi n of Oroville (w 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
  CHSC21155  Ludwigia peploides M. S. Taylor 1975-10-3 925 Butte In slough at bridge over Big Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CAS-BOT-BC198303  Lupinus Charles Piper Smith 1949-4-21 49118 Butte Cherokee Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC49842  Lupinus affinis Vernon Oswald 1990-4-4 4147 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. From a small group of plants near the edge of the cement launching ramp, slightly below the high-water line of the lake. 271 Comment
  CHSC84888  Lupinus affinis R. D. Fischer; Jenny Marr 2003-4-29 4 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  CHSC48520  Lupinus albicaulis Vernon Oswald 1984-5-23 1205 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. 463 Comment
  JEPS50784  Lupinus albicaulis Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9278 Butte abut 1 mi NE of Jarbo Gap (along Feather River Hwy. (now Calif. 70)) 640 Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. 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
  CHSC899  Lupinus albifrons var. albifrons L. Nelson 1935-5-7 Butte Honey Run road. 243 Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  UC398928  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte above Jonesville; above Jonesville 2000 Comment
  CHSC31938  Lupinus arbustus J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1031 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit adjacent to large mudlflow, northern most portion of county. 1828 Comment
  CHSC48524  Lupinus arbustus Vernon Oswald 1984-5-28 1212 Butte Cohasset Rd., 1.8 mi n of the end of the pavement. 1036 Comment
  UC1129534  Lupinus arbustus P. L. Johannsen 1936-7-21 953 Butte 1/2 mi e Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  UCD106673  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte Summit above Jonesville. 2133 Comment
  UCD107195  Lupinus bicolor A. A. Heller 1914-3-26 11227 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  SEINET10485384 Image available Lupinus formosus var. robustus A. Arthur Heller 1940-4-28 Heller 15561 Butte Along the roadside between the radio station and hooker oak, E of Chico. Comment
  CDA13334  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13180 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. w/ 13175. Comment
  CHSC87796  Lupinus latifolius var. columbianus Paul Maslin 2004-4-6 12 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC87798  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CDA27451  Lupinus latifolius var. columbianus T. C. Fuller 1962-7-12 9173 Butte 2 miles east of Butte Meadows. 0 Comment
  RSA715593  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada, south side of Cascade Creek 0.4 mile east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  UC1075909  Lupinus nanus E. K. Balls and L. W. Lenz 1955-5-13 20684 Butte on road from Oroville to Magalia 1/2 mi s Paradise Comment
  UC204550  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade Comment
  RSA724911  Lupinus nanus subsp. nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills, near the eastern shores of Lake Wyandotte, 7 air km ESE of Oroville Dam. 422 Comment
  CHSC117850  Lupinus nanus var. vallicola L. P. Janeway 2016-5-9 11949 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC48536  Lupinus obtusilobus Vernon Oswald; Lowell Ahart 1987-7-1 3069 Butte Humbug Rd. 0.3 mi w of Butte Creek, ca. 2 mi (air) ese of Jonesville. 1755 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC109091  Lupinus pachylobus Lowell Ahart 2012-4-20 17890 Butte North edge 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
  RSA695519  Lupinus pachylobus L. Ahart 2003-4-8 10050 Butte About 1/8 mi NW of the iron gate and fence, NW of Cherokee Rd, North Table mountain, about 7 mi (air) N of Oroville. 327 Comment
  UC1609454  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  RSA32926  Lupinus polycarpus A. A. Heller 1942-4-26 16439 Butte Summit of Table Mountain near the road from Cherokee to Oroville. Comment
  RSA414429  Lupinus polycarpus Bonnie C. Templeton 1967-4-25 s.n. Butte 6-10 miles north of Oroville. Comment
  SEINET10970021  Lupinus polycarpus Karen D. Johnson 1978-4-16 Johnson 2 A Butte East side of Cohasset Rd. at Lassen Ave., 3 mi. N of Chico. 61 Comment
  JEPS108777  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET10490232  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 -UC Butte Jonesville, colby canyon; in dry and barren openings. 1600 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  SEINET10452666  Lupinus stiversii Mary Susan Taylor 1980-4-18 Taylor 2529 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  CHSC59026  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir. 1676 Comment
  CHSC71658  Luzula cascadensis Vernon H. Oswald; Lowell Ahart 1998-8-11 9468 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  UC600794  Luzula cascadensis H. F. Copeland 1932-8-12 Butte Meadow by Butte Creek; Jonesville 1500 Comment
  RSA325091  Luzula comosa M. S. Taylor, L. Hanson 1981-4-10 3521 Butte E side of logging spur road, ca. 0.5 mile N of its jct. with Concow Road, ca. 6 miles N of Jarbo Gap on Highway 70, ca. 21 air miles N of Oroville. 732 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC44171  Luzula divaricata V. Oswald; L. Ahart 1988-7-26 3629 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. Along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC28659  Luzula macrantha J. D. Jokerst 1979-3-31 196 Butte S. of little Chico Cr., at it's intersection with the W edge of section 12. Comment
  CHSC54385  Luzula macrantha M. Bailey 1991-3-6 546 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  CAS-BOT-BC441205  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS118064  Luzula parviflora Lowell Ahart 2011-8-19 17642 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  JEPS119866  Luzula subsessilis Lowell Ahart 2012-5-12 18028 Butte About 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CDA34634  Lychnis coronaria L. Ahart 2009-6-19 15935 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. Comment
  JEPS120153  Lycopersicon esculentum Lowell Ahart 2012-10-20 18507 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC28806  Lycopus americanus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 408 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  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
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  UCD103040  Lythrum hyssopifolia E. M. Johnston 1915-1 W- 134 J Butte Biggs. Comment
  CHSC117462  Lythrum portula B. Castro; Sabrina Bell 2016-5-25 2133 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  JEPS98548 Image available Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  POM193088  Madia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  SEINET10474799  Madia bolanderi Mary Susan Taylor 1977-8-17 Taylor 1469 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC342712  Madia elegans Lowell Ahart 1983-6-26 4116 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA0060842  Madia elegans subsp. densifolia Lowell A. Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC116221  Madia exigua Lowell Ahart 2015-6-16 20231 Butte On the west side of the paved road, 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. 1301 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  JEPS124120  Madia exigua Lowell Ahart 2015-6-6 20201 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS32701  Madia exigua Lewis S. Rose 1963-6-2 63069 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC342957  Madia gracilis Clarence R. Quick 1952-6-30 52 -105 Butte Ridge top, Big Bar Mt., east of Pulga Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  SEINET10536496  Mahonia dictyota Lowell Ahart 1983-4-14 Ahart 3935 Butte Ca. 3/4 mi w of Forbestown Reserv., ca. 3.4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CAS-BOT-BC347382  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte On the north side of the Ponderosa Res., about 2 miles north of Forbestown 450 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
  CHSC46808  Malva parviflora R. A. Schlising 1986-9-14 4504 Butte NW part of county, W of Pine Creek Cemetery. Comment
  SBBG128773  Malva pseudolavatera L. Ahart 2013-5-21 18702 Butte waste area along fence, W side of Hwy 99E, 30 yards N of W Rio Bonito Rd, ca. one mi NE of Biggs 31 Comment
  CHSC1038  Malva sylvestris J. Baynes 1929-4-21 Butte College Campus, Chico. 57 Comment
  CHSC13931  Marah watsonii J. DiVittorio 1974-4-30 28 Butte Ca. 3.5 mi ne of Cohasset on Cohasset Hwy, and ca. 100 yds w side of the road. 609 Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  SEINET10530355  Marsilea vestita Mary Susan Taylor 1975-10-4 Taylor 958 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
  CHSC36305  Matricaria discoidea M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC77476  Matricaria discoidea Anna Pinsky 1997-4-30 37 Butte Upper Bidwell Park, between Bear and Salmon Hole, 100-200 ft above Big Chico Creek. Comment
  JEPS115540  Medicago arabica Lowell Ahart 2009-5-15 15712 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS95431  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte 7 mi N of Oroville (NE corner of Oregon City School House, Oregon City) 365 Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  UCD106764  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET12155163  Medicago orbicularis P. L. Ricker 1912-1 3941 Butte Chico Comment
  POM348140  Medicago polymorpha P. L. Ricker 1912-5-18 3953 Butte Chico. Comment
  JEPS115313  Medicago praecox Lowell Ahart 2009-4-22 15575 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
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CHSC49558  Melica fugax Vernon Oswald; Lowell Ahart 1987-5-14 2399 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. In forest on the w side of the creek. 1780 Comment
  UC1609152  Melica geyeri Vernon H. Oswald and Lowell Ahart 1993-4-19 5282 Butte ene of Magalia (Rattlesnake Creek Trail, between Jordan Hill Rd and Sawmill Pk Lookout, along the lower part of the trail between the creek and the lookout) 719 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC41166  Melica harfordii L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas N.F. ECOS plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 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
  RSA718332  Melica harfordii L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  SEINET10901843  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4231 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  UC600753  Melica stricta H. F. Copeland 1932-7-24 Butte sw of Butte Creek meadows (rim of Butte Creek drainage); Jonesville, Butte Creek 2000 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CHSC46439  Melica torreyana Lowell Ahart 1989-5-10 6221 Butte Along a dirt road, near a stream, near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  SEINET10452218  Melilotus albus Mary Susan Taylor 1975-7-4 Taylor 830 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  SEINET10498169  Mentha X piperita Mary Susan Taylor 1978-9-9 Taylor 1923 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CDA42940  Mentha arvensis L. Ahart 2012-10-2 18495 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS120581  Mentha arvensis Lowell Ahart 2013-10-19 19142 Butte Along the west side of the Sacramento River, about 300 yards north of the bridge, west of Butte City 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
  UC480657  Mertensia ciliata H. F. Copeland 1930-7-27 Butte beside So. Willow creek Jonesville 1828 Comment
  CAS-BOT-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CAS-BOT-BC429074  Micranthes odontoloma E. B. Copeland 1931-7-20 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 1500 Comment
  UCD146243  Micropus californicus Daniel S. Park; J. P. Zabala 2010-4-10 12 Butte Table Mt. Cherokee Rd. 351 Comment
  CHSC38382  Micropus californicus var. californicus Vernon Oswald 1983-4-4 269 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  CHSC394  Micropus californicus var. californicus M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  POM33622B  Microseris C. C. Bruce 1897-06 1951 Butte Little Chico Comment
  JEPS115236  Microseris acuminata Lowell Ahart, John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  SEINET10971137  Microseris acuminata Mary Susan Taylor 1978-4-14 Taylor 1562 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC46961  Microseris douglasii Lowell Ahart 1976-4-14 1062 Butte In pasture field, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM35006  Microseris nutans C. C. Bruce 1898-05 2462 Butte Doe mill Comment
  CHSC54092  Microseris sylvatica Vernon H. Oswald; Lowell Ahart 1991-5-13 4588 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 121 Comment
  CHSC38598  Microsteris gracilis Vernon Oswald 1983-3-4 106 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. ca. 100 ft w of parking area P (2 mi e of the power lines). 207 Comment
  SEINET178518  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville by Butte Cr 1500 Comment
  SEINET10969159  Microsteris gracilis Mary Susan Taylor 1978-6-24 Taylor 1643 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  HSC32632  Mimulus angustatus Gary S. Lester 1974-4-20 107 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  HSC66317  Mimulus bicolor Robert A. Schlising 1963-6-7 2619 Butte 3.1 mi. S of Cohasset along Cohasset Hwy. Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  UCD89425  Mimulus filicifolius Jason Sexton 2010-5-22 1 Butte East of Oroville, Big Bald Rock area. 932 Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  JEPS50780  Mimulus glaucescens Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9282 Butte just above Pulga Bridge; North Fork Feather River Canyon Comment
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Mar 15 2006
  RSA178677  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale Grade about 5 miles from Paradise Comment
  UC103699  Mimulus glaucescens R. M. Austin Apr, 1883 213 Butte Little Chico Creek Comment
  UCD122720  Mimulus glaucescens E. Rilla 1976-4-4 14 Butte ca. 3 ft n of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  JEPS86611  Mimulus guttatus L. R. Heckard, J. C. Hickman, M. Wolf, and S. D'Alcamo 1989-4-12 6727 a Butte n Oroville (off Cherokee Rd.); Table Mountain Comment
  UCR190823  Mimulus guttatus 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
  SEINET10962510  Mimulus guttatus Lowell Ahart 1985-6-17 Ahart 5056 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET12332656  Mimulus guttatus D. E. Young 1983-1 18 Butte North Table Mountain, 5 mi W of Cherokee Rd & 1.3 km SW of Oregon Gulch Rd, 7.2 km E of Hwy 70 & 9.2 390 Comment
  HSC32602  Mimulus kelloggii Linda M. Barker 1974-4-20 163 Butte Table Mtn., Central Valley 305 Comment
  RSA256661  Mimulus kelloggii Dave Knorr 1974-4-20 137 Butte On Oroville's Table Mtn, near Cherokee Rd. Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  JEPS108561  Mimulus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek 1305 Comment
  UC426957  Mimulus moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  UC1509660  Mimulus nasutus M. S. Taylor and K. Tharp 1983-3-12 5442 Butte ca. 3 mi sse Chico (along small rd. off Stillson Canyon Rd. (leading to Mannion property)); Chico quad. 152 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  UC103748  Mimulus torreyi Mrs. R. M. Austin July 1896 162 Butte Colby Comment
  RSA21489  Mimulus tricolor Carl B. Wolf 1937-5-14 8671 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  UCD122947  Mimulus tricolor L. Ahart 1978-5-1 1687 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  CHSC45572  Minuartia californica Lowell Ahart 1976-4-11 1057 Butte Along the edge of roads, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC93375  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut. 49 Comment
  RSA636047  Minuartia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  UCSC008596  Minuartia californica Randall Morgan 2008-4-1 4840 Butte Originally from Ahart Ranch Comment
  CHSC33106  Minuartia douglasii M. S. Taylor 1981-5-15 3738 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Hwy 70. 1219 Comment
  UCSB46161  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles W of Lunt Road; from Highway 70 Comment
  POM161689  Mitella pentandra E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC38477  Monardella breweri subsp. lanceolata Vernon Oswald 1983-6-27 766 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC52229  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3046 Butte Just below saddle between Coon Hollow and Chips Cr. 1920 Comment
  CDA13313  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1996-7-9 13159 Butte Sierra Nevada; USFS N60 approx. 0.4 m E of bridge over Marble Creek. Comment
  CHSC43014  Monardella sheltonii L. P. Janeway 1987-6-26 2286 Butte 8.5 mi EW of Stirling City and 0.1 mi W of Fiver Corners on the road from Stirling City to Rag Dump. 1127 Comment
  CHSC44928  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC50676  Monardella sheltonii Lowell Ahart 1990-5-28 6502 Butte Near a deep pond, south of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  UCD139994  Monochoria vaginalis John M. Tucker; B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station. Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC33108  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC27071  Montia fontana subsp. chondrosperma James T. Nicol 1978-3-15 12 Butte Ca. 30 m se of junct. of Honey Run-Humbug Rds. 10.2 km ese of Chico. 120 Comment
  CHSC28633  Montia fontana subsp. chondrosperma M. S. Taylor 1979-3-31 1965 Butte In very wet ditch. Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  CAS-BOT-BC445136  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek Road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock 609 Comment
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  SEINET10929037  Montia spathulata var. tenuifolia Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4859 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC102477  Morus alba L. P. Janeway 2009-10-13 9951 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Big Chico Creek along South Rim Trail/Annie Bidwell Trail/Guardian Trail 275 m west of the high power lines. 109 Comment
  CHSC51290  Muhlenbergia filiformis Lowell Ahart 1990-10-21 6636 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  JEPS95025  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 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
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 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
  CHSC45423  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte On the sides of a small wash in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC28574  Myriophyllum spicatum M. S. Taylor; J. D. Jokerst 1979-11-11 2277 Butte Aquatic in irrigation ditch, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CDA5314  Myriophyllum spicatum L. Ahart 2001-6-3 8749 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  SD9591  Myriopteris gracillima E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CHSC21386  Myrtus communis var. microphylla M. S. Taylor 1975-6-22 787 Butte On n side of Big Chico Creek, ca. 50 ft e of Ivy Street, California State University, Chico. Comment
  CHSC49675  Najas guadalupensis V. Oswald 1988-6-8 3360 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UCR146291  Najas guadalupensis Ellen Dean, Et al. 2001-8-20 852 Butte Biggs UC Field Station; N of town of Biggs, west of jct. of Hwys 99 and 162; north side of Mailton Road, c. 1/8 mi east of jct. with Riceton Hwy; along second N-S running dirt road leading N into rice field, at intersection with first E-W running dirt road, corner of rice field 100 Comment
  CHSC46191  Nama lobbii L. P. Janeway; R. A. Schlising 1988-7-1 2919 Butte South-facing cutbank of dirt road just NW of Summit Lake. 1950 Comment
  UC572408  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e of Chaparral House (Lassen National Forest, Paynes Creek Quadrangle); Lassen National Forest, Paynes Creek Quadrangle 1584 Comment
  CHSC43142  Narthecium californicum R. Banchero; R. Schlising 1981-7-21 607 Butte 0.3 mi s of Bald Mt lookout tower, Bald Mt. 1688 Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. 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
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC38603  Navarretia divaricata subsp. vividior Vernon Oswald 1983-5-30 578 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon ca. 1.8 mi e of the power lines. 390 Comment
  CHSC33252  Navarretia filicaulis M. Banchero 1979-9-2 28 Butte 6 mi NE Forest Ranch on Hwy 32; on roadside fill. Comment
  JEPS107911  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, 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
  JEPS120850  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  RSA716046  Navarretia filicaulis L. Ahart 2005-7-12 12135 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. 624 Comment
  UC1111635  Navarretia filicaulis Lewis S. Rose 1955-6-15 55101 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  UC196268  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  CHSC36707  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi w of junction of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC115445  Nemophila heterophylla M. Sutton; C. Yasuda 2013-4-9 29 Butte Centerville Flumes. 350 Comment
  CHSC31113  Nemophila heterophylla Herb Allan McLane 1980-4-25 18 Butte Plumas National Forest, n of Ponderosa Way, MDM. 377 Comment
  CHSC38459  Nemophila heterophylla Vernon Oswald 1983-2-23 96 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 700 ft. e of Diversion Dam Parking Lot. 134 Comment
  JEPS119839  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA178592  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte Along Chico creek about 4 miles east of Chico. Comment
  CHSC51050  Nemophila pedunculata Pauleen Broyles 1987-2-22 996 Butte The Nature Conservancy Vina Plains Preserve. E of Sheep Camp Ditch in 'safe' pasture, on a rise. Comment
  CHSC60986  Nemophila pedunculata Lowell Ahart 1993-6-20 7002 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile northwest of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS120593  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 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
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 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
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  CHSC40407  Odontostomum hartwegii Lowell Ahart 1985-5-15 4980 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  POM197244  Odontostomum hartwegii H. F. Copeland 1929-5-4 1130 Butte Canyon of Chico Creek. Comment
  SEINET12265275  Odontostomum hartwegii A. A. Heller 1926-1 13933 Butte 4 mi N of Chico, on Richardson Springs road Comment
  CHSC96316  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS80619  Orobanche fasciculata M. S. Taylor 1981-5-29 3814 Butte ca. 3 air mi. s.e. Pulga (ca. 0.5 mi. n. of 22N31, Chino Ridge); Pulga SW Quad., Chino Ridge 853 Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  UC1609416  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte about 1/8 mile south west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City 1463 Comment
  SEINET12318315  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 7.6 mi N on Cohasset Rd from East Ave. jct 564 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
  RSA715718  Orthocarpus erianthus L. P. Janeway 2005-3-1 8332 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 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
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC98903  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west sideTable Mountain Blvd bridge. Growing among rock outcrops just above rive high water line. 41 Comment
  CHSC21007  Oxalis corniculata M. S. Taylor 1975-4-6 438 Butte In lawn, e side of 1200 block of Arcadian, Chico. 60 Comment
  JEPS121894  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  SEINET3441866  Oxalis radicosa Unknown 2003-4-30 10119 Butte Oroville, Oroville, about 5.5 air miles southwest, about 3/5 of a miles west of Pacific Heights Road, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area 30 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
  CAS-BOT-BC316897  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37616 Butte Nelson Bar 213 Comment
  SEINET10948596 Image available Packera eurycephala var. lewisrosei Lewis S. Rose 1939-6-7 Rose 39247 Butte North Fork of Feather River. 3 mi. s. of Pulga. Canyon side. 610 Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC38838  Panicum acuminatum var. acuminatum Vernon Oswald 1983-5-31 587 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 200 ft e of Day Camp. 91 Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC38836  Panicum capillare Vernon Oswald 1983-8-9 972 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. In the bed of Chico Creek. 85 Comment
  CHSC83103  Panicum capillare Lowell Ahart 1983-7-29 4239 Butte Along the edge of the dirt road, about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC84032  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  UC830989  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (U.S. Highway #99E near the junction with the Cana Road); U.S. Highway #99E 60 Comment
  UCD88969  Paspalum urvillei Alan A. Beetle 1941-6-27 2894 Butte 4 miles north of Gilroy. Comment
  CHSC34221  Paxistima myrsinites M. S. Taylor 1981-5-29 3811 Butte Vicinity of old mining claim ca bin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC48898  Pectiantia breweri Vernon Oswald 1987-6-29 3035 Butte Jones Meadow Rd. e of Inskip at a small streamlet which joins Last Chance Creek just downstream from its East Fork. 1676 Comment
  UCD103456  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS117143  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC49019  Pedicularis attollens Vernon Oswald 1987-7-29 3167 Butte Southwestern-most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  RSA4166  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville. 1550 Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  SEINET12318328  Pedicularis densiflora Unknown 1977-1 53 Butte 30 yards to the east side of Vilas rd, around .4 mi NE of jct of Cohasset HWY & Vilas Rd 945 Comment
  RSA754852  Pellaea andromedifolia L. Ahart 2009-5-30 15781 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  POM120723  Pellaea andromedifolia C. C. Bruce 1897-04 1864 Butte Butte Creek Comment
  CHSC3223  Pellaea mucronata Virginia Hagaman 1966-3-28 93 Butte On Table Mountain. Comment
  SEINET10529812  Pellaea mucronata Mary Susan Taylor 1979-3-20 Taylor 1954 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
  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
  CHSC49023  Penstemon azureus var. azureus Vernon Oswald 1984-5-21 1197 Butte Coutolenc Rd., 4.2 mi s of its jct. with the Skyway at Lovelock. 792 Comment
  SEINET10547989  Penstemon gracilentus Mary Susan Taylor 1977-8-17 Taylor 1485 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  RSA716048  Penstemon heterophyllus L. Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 miles (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 734 Comment
  POM14699  Penstemon heterophyllus subsp. purdyi A. A. Heller, H. E. Brown 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  CHSC91461  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  CHSC44725  Penstemon heterophyllus var. purdyi R. Banchero 1980-6-2 173 Butte Along Hwy 32 ca. 6.3 SW of the town of Forest Ranch. 524 Comment
  UC398654  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte seven mi n Chico (along Rock Creek); , n of Chico Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC44697  Penstemon laetus var. leptosepalus R. Banchero 1980-6-14 229 Butte Along Hwy 162, 0.8 mi S of its jct with Bald Rock Rd, 0. mi N of the town of Berry Creek. 560 Comment
  CHSC44703  Penstemon laetus var. leptosepalus R. Banchero 1980-6-2 177 Butte Along Hwy 32, ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of the jct of Hwy 32 and Forest Ranch Rd. 609 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  SD4632  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville, pine and fir woods 1550 Comment
  CHSC27990  Penstemon neotericus M. S. Taylor 1978-7-18 1690 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and hwy 32. 1326 Comment
  CHSC99580  Penstemon neotericus L. P. Janeway 2008-6-15 9411 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  NY627278  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral 1645.9 Comment
  UC423641  Penstemon neotericus David D. Keck 1930-7-24 971 Butte near Chaparral; Sierra Nevada, near Chaparral 1645 Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  UC1481799  Pentagramma pallida C. C. Hall 1917-5-16 1030 b Butte Iron Canyon Comment
  CHSC34243  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte Along Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC90138  Pentagramma triangularis subsp. triangularis Jack Judkins 1983-4-16 9 Butte 6 mi east-southeast of Chico, 100 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  CAS-BOT-BC77086  Pentagramma triangularis subsp. triangularis J. L. Wilson 1970-2-27 235 Butte North bank of Honey Run Road, approx. 50 yds. up hillside in rocks. Ca. 5 mi. east of intersection of Honey Run Rd. 91 Comment
  SFV10664  Pentagramma triangularis subsp. triangularis M. L. Vincent 1965-4-16 624 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CHSC73399  Perideridia howellii B. Castro 1995-9-10 611 Butte Watson Cabin Meadow. Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  SEINET10840955  Perideridia kelloggii Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1398 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. 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
  CHSC40217  Perideridia lemmonii Lowell Ahart 1985-6-17 5064 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC73912  Perideridia lemmonii B. Castro 1998-7-28 814 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near water-hole in center of meadow. 929 Comment
  JEPS115269  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC55252  Persicaria hydropiper Lowell Ahart 1991-9-14 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  UCD150369  Persicaria hydropiperoides William Anderson 1963-9-27 s.n. Butte Sanborn Slough. Tule Goose Gun Club. 17 Comment
  CHSC43246  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  JEPS120035  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC419174  Persicaria maculosa Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek 50 Comment
  CHSC116135  Persicaria punctata Lowell Ahart 2015-11-7 20635 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  UCSB63949  Petrorhagia dubia Snodgrass, G. 1981-4-11 Butte Ca. 5 mi. E of Chico; ca. 1/2 miles E of Rockwood Lake entrance on Humbug Rd. (now Honeyrun Rd.) Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  UC1228320  Phacelia imbricata L. R. Heckard 1953-4-27 342 Butte along Feather River hwy just below Las Plumas Rd 182 Comment
  UC175560  Phacelia imbricata A. A. Heller 1913-6-6 10786 Butte 8 mi n Oroville; Table Mountain 182 Comment
  CHSC39105  Phacelia mutabilis R. A. Schlising 1982-8-1 4368 Butte N part of county, E of Inskip and E of Jones Meadow. 1853 Comment
  CHSC97006  Phalaris brachystachys B. Castro; R. A. Schlising 2005-5-29 1478 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 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
  CHSC58290  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC37631  Philadelphus lewisii T. B. Devine 1979-10-5 598 Butte Feather River Canyon, 3/4 mi S of Arch Rock Tunnel, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  RSA0057767  Philadelphus lewisii M. M. Boney 1897-1 s.n. Butte Unspecified. Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  CHSC40293  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  SEINET10934985  Phleum pratense Mary Susan Taylor 1978-7-21 Taylor 1836 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  CHSC20109  Phoradendron densum M. S. Taylor 1975-4-9 569 Butte In serpentine area ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  RSA133203  Phoradendron macrophyllum Del Wiens 1960-6-15 2729 Butte Several miles S of Oroville, on Hwy 40 alternate. 122 Comment
  CAS-BOT-BC141119  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1983-3-27 991 Butte Peter Ahart Ranch, about 1 1/2 miles N and 1 mile E of Honcut 50 Comment
  JEPS120061  Photinia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17855 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CHSC108800  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte In a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC49449  Phyla nodiflora var. nodiflora Vernon Oswald 1983-7-25 910 Butte Indian Fishery (Tyler Slough), Bidwell State Park, at the w end of W. Sacramento Ave. w 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
  CDA5819  Physalis lancifolia M. R. Pryor 1949-10-13 Butte 1 mile west of Biggs on Afton Road. 0 Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA702777  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico. 58 Comment
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  SEINET10449366  Pieris japonica Mary Susan Taylor 1975-5-6 Taylor 554 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  JEPS99057  Pilularia americana Lowell Ahart 2002-4-24 9525 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) SW of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  CAS-BOT-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC109525  Pinus ponderosa var. pacifica L. P. Janeway 2012-6-23 10893 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC72807  Pinus sabiniana John Thomas Howell 1962-6-15 37432 Butte Sierra Nevada - Magalia 731 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  CHSC81424  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10529823  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2319 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10932937  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-4-5 Taylor 3497 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 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
  JEPS107766  Plagiobothrys austiniae Lowell Ahart 2005-5-11 11809 Butte Margins of vernal pools, about 300 yards southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 359 Comment
  UCD120768  Plagiobothrys austiniae Robert E. Preston 1990-3-11 594 Butte Chico, N end of Cactus Ave. 76 Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  CHSC29373  Plagiobothrys fulvus var. campestris L. Ahart 1980-4-30 2138 Butte Near Bangor, about 3 mi e of Bangor-Oroville Highway, along Swedes Flat Road; near bridge over Rocky Honcut Creek. 320 Comment
  UCD80159  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-13 SNFN 0079 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  UC1303133  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte 4 mi e Chico Comment
  UC987699  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte about 3 mi s of Cherokee on road to Oroville 335 Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte West side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 396 Comment
  SEINET7072715  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-7 s.n. Butte About 5.2 miles southeast of Bangor on the Loma Rica Road. UTM Zone 10, 641106E, 4354576mN. Coordinate datum: NAD 27. Comment
  UCD124395  Plantago coronopus Steven C. Joslin 1978-4-18 2 Butte ca. 11 miles north of Chico on Highway 99 at intersection with Broyles Road. 60 Comment
  SEINET12318338  Plantago coronopus D. M. Burk 1978-1 117 Butte 50 ft S of intersection of Broyles Rd & Hwy 99, ca 11 mi N of Chico 59 Comment
  JEPS119614  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  SBBG119748  Plantago elongata L. Ahart 2004-4-14 10741 Butte S side of Lower Honcut Rd, ca. 100 yds W of Wyandotte Crk, ca. 1/8 mi W of railroad, ca. 1.75 mi W of Honcut; T17N, R4E, S18, SW/4 27 Comment
  UC1506095  Plantago erecta Robert T. Clausen 1963-3-20 63009 Butte s of Chico (low ridge e of Mutual Ditch, Sacramento River drainiage); Sacramento Valley, Sacramento River 57 Comment
  CHSC55392  Plantago hookeriana Dan Morgan 1991-4-21 17 Butte Indian Springs Road, 0.3 mi west of Neal Road, Paradise. 243 Comment
  SEINET10836899  Plantago hookeriana var. californica Mary Susan Taylor 1975-4-25 Taylor 500 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
  CHSC101161  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC59030  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  CHSC77489  Platanus X acerifolia Anna Pinsky 1997-4-30 34 Butte Upper Bidwell Park, between Bear and Salmon Hole, adjacent to Big Chico Creek, next to large rocks. Comment
  SEINET10476455  Platanus racemosa Mary Susan Taylor 1975-7-4 Taylor 829 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC91594  Platystemon californicus Ira L. Wiggins 1925-3-22 1492 Butte At roadside about one mile below Five Mile Dam on Chico Creek. Three miles above Chico. Comment
  SEINET10840002  Plectritis ciliosa Mary Susan Taylor 1981-4-5 Taylor 3491 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  JEPS117148  Plectritis macrocera Lowell Ahart 2010-4-30 16596 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  RSA32918  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 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
  HSC66331  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, 100ft. W of Old Humboldt Rd. 2012 Comment
  CAS-BOT-BC244398  Poa annua Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC56638  Poa annua J. Boze 1982-5-6 423 Butte In backyard garden area. End of Michal Way, ca 1.5 mi east of Hwy 99 off of Eaton Road. Comment
  CHSC9281  Poa bulbosa D. C. Burns 1971-4-3 115 Butte On n side of Cohasset rd., ca. .5 mi e of the intersection of Cohasset rd. and Vilas rd. 365 Comment
  SEINET10921189  Poa compressa Lowell Ahart 1988-6-29 Ahart 6090 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone, Butte County, California. Common. Yellow Pine Forest. 622 Comment
  CHSC50440  Poa howellii Vernon Oswald 1990-6-18 4299 Butte Paradise Lake, ca. 3 mi north of Magalia. On a trailside bank on the northwest side of the lake near Coutolenc Creek. 777 Comment
  CHSC34164  Poa pratensis L. Ahart 1981-9-15 3155 Butte On the sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  SEINET10659840  Poa pratensis Lowell Ahart 1987-5-6 Ahart 5560 Butte On dry sand, 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
  UC478556  Poa pringlei E. B. Copeland 1931-6-22 606 Butte the Summit Jonesville 2000 Comment
  CHSC59849  Poa secunda subsp. secunda Michael Snider 1978-4-12 13 Butte Ca. 140 ft s of Rock Creek. 213 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  CHSC14011  Pogogyne douglasii G. Notch 1974-4-23 179 Butte Ca. 4 mi w of Hwy 99 on Broyles Rd. ca 12 mi n of Chico. 76 Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  JEPS115262  Polanisia dodecandra subsp. trachysperma Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15437 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC11948  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC45569  Polycarpon tetraphyllum John T. Howell 1974-5-3 50334 Butte Sidewalk east of Wells Fargo Bank, at the Shell Gas Station, in Gridley. 30 Comment
  UCSB64007  Polycarpon tetraphyllum Ahart, Lowell 1978-6-2 Butte Along the edge of North Honcut Creek; Peter Ahart Ranch; about 1 mile north and 3 miles east of Honcut; about 12 miles south of Oroville 39 Comment
  CDA38778  Polycarpon tetraphyllum var. tetraphyllum L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC24495  Polygala cornuta M. S. Taylor 1976-6-28 1162 Butte Ca. 150 ft w of Hwy 32, ca. 18 mi ne of Chico. 762 Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  CHSC88089  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 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. 198 Comment
  JEPS115577  Polygonum arenastrum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC20497  Polygonum aviculare M. S. Taylor 1975-5-24 770 Butte Abundant weed in lawns, 1456 Arcadian, Chico. 60 Comment
  POM181761  Polygonum aviculare H. F. Copeland 1923-7-4 559 Butte Nelson Comment
  CAS-BOT-BC109130  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CHSC88076  Polygonum bidwelliae R. D. Fischer 2004-6-12 161 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on ridge above Humboldt Trail and just w. of Hwy 32. 399 Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  JEPS95528  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte about 1 mi E of Chico (along North Rim Trail, near the double power lines, Bidwell Park) 152 Comment
  CAS-BOT-BC414416  Polygonum douglasii H. F. Copeland 1920-7-24 18 Butte Meadow by Colby Creek 1828 Comment
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  JEPS110392  Polygonum douglasii subsp. douglasii Lowell Ahart 2006-8-15 13189 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC50555  Polygonum douglasii subsp. johnstonii Vernon Oswald; Lowell Ahart 1990-7-5 4350 Butte Headwaters of Willow Creek, 0.3 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug summit), ca. 4 mi east of Jonesville. 1950 Comment
  JEPS118058  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD1173  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, on shaded gravel bars by Butte Creek 1500 Comment
  CHSC44419  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte Small meadows or openings in pines, north of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC48664  Polygonum parryi Vernon Oswald 1986-5-6 1997 Butte Cohasset ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CDA22837  Polygonum phytolaccifolium T. C. Fuller 1962-7-12 9179 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  JEPS108773  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 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
  UC465755  Polygonum polygaloides subsp. kelloggii Mrs. R. M. Austin July 1896 283 Butte Colby Comment
  CDA42733  Polypodium calirhiza L. Ahart 2005-1-2 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam Comment
  CHSC38241  Polypodium calirhiza Vernon Oswald 1982-7-3 21 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC3887  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  SBBG126088  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte N side of large rock, on E edge of Big Chico Crk, ca.100 yards S of the trail crossing the crk, ca 100 yards W of Ten Mile House Rd, ca 3/4 mi W of Hwy 32, ca 9 mi NE of Chico 189 Comment
  CHSC79432  Polypodium glycyrrhiza G. F. Hrusa; T. D. Wilfred 1997-5-1 13706 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']. 790 Comment
  RSA755345  Polypogon australis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  UCD90526  Polypogon australis L. E. Hazeltine 1916-6-10 s.n. Butte Chico. Comment
  SEINET10876076  Polypogon australis Lowell Ahart 1987-6-9 Ahart 5730 Butte On dry sand, on a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC233059  Polypogon interruptus Lowell Ahart 1983-6-26 4110 Butte Along Ponderosa Way, ca. 1/8 mile E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 miles NE of Oroville 500 Comment
  CHSC111141  Polypogon interruptus Lowell Ahart 2012-6-21 18214 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC92552  Polypogon interruptus Lowell Ahart 2005-12-11 12520 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  SEINET11665627  Polypogon interruptus Unknown 1983-1 4110 Butte ca 0.12 mi E of int of Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville along Ponderosa 500 Comment
  CAS-BOT-BC233209  Polypogon maritimus Lowell Ahart 1982-7-18 3681 Butte Along the sides and on the bottom of a small wash, Peter Ahart Ranch, ca. 1.5 miles N and 1.5 miles E of Honcut 50 Comment
  CHSC38852  Polypogon maritimus Vernon Oswald 1983-5-22 523 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  UC123289  Polystichum californicum Mrs. R. M. Austin May 1883 80 Butte Little Chico Canyon Comment
  SEINET10530117  Polystichum imbricans Mary Susan Taylor 1979-9-28 Taylor 2202 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  POM120956  Polystichum imbricans subsp. curtum C. C. Bruce 1897-05 1865 Butte Forest- Ranch. Comment
  CHSC113580  Polystichum imbricans subsp. imbricans Lowell Ahart 2014-8-24 19722 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  UC1609398  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte ca. 1 mi se Butte Meadows (dirt rd s side of Bolt Creek) 1325 Comment
  CHSC33955  Populus tremuloides M. S. Taylor; L. Ahart 1981-8-15 4189 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  SEINET10539164  Populus tremuloides Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4189 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  SEINET10460842  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Submerged or reaching surface of water in lily pond near Butte Creek House 1750 Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  CHSC57136  Portulaca oleracea L. P. Janeway 1988-6-29 2901 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek Bridge. 170 Comment
  CHSC112650  Potamogeton Lowell Ahart 2013-10-16 19115 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC88230  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  UC114481  Potentilla gracilis var. fastigiata Mrs. R. M. Austin July 1896 Butte Colby Comment
  CHSC101760  Poterium sanguisorba Lowell Ahart 2009-5-23 15732 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC41286  Prunella vulgaris var. lanceolata S. C. Morey 1983-7-21 506 Butte Cherry Hill Meadow. On the n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43831  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2316 Butte SW end of Logue Meadows. 1325 Comment
  CHSC52062  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 146 Butte Ca 5.5 mi n of Inskip on e side of Humbug Summit Road ('Skyway' on quad map) opposite Cornelia Lott Sank Memorial Spring. 1536 Comment
  SFV5828  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC48865  Prunus avium Vernon Oswald 1987-3-30 2303 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi nw of Butte Creek Bridge. On the edge of a pond. 65 Comment
  CAS-BOT-BC159918  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC61176  Prunus virginiana var. demissa Vernon H. Oswald 1993-5-18 5402 Butte Middle Butte Creek Trail on the E side of the creek and on the upstream side of Ponderosa Way, between the pond and the footbridge over the creek, ca. 2 mi (air) WNW of Magalia. 609 Comment
  CHSC97356  Prunus virginiana var. demissa Paul Maslin 2005-5-5 51 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106100198E 4411262N. 268 Comment
  CHSC26649  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1511 Butte On s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CHSC26751  Pseudognaphalium luteoalbum M. S. Taylor; M. Hayes 1977-8-16 1448 Butte In flower bed near maintenance buildings, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS107334  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC60962  Psilocarphus tenellus var. tenellus Lowell Ahart 1993-7-6 7049 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC12130  Pteridium aquilinum var. pubescens J. M. Pitts 1972-4-16 122 Butte 6.1 mi ne past Honeyrun Bridge on Humbug Rd. 335 Comment
  SEINET10602442  Puccinellia pauciflora Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3940 Butte Soda Ridge Rd, 1.5 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a dry snow lake located over a low ridge just n of the marshy, spring-fed lake visible from the road. Comment
  CHSC53990  Puccinellia simplex Vernon H. Oswald 1991-4-25 4532 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Flat on the south side of the road just west of the PG and E Substation. 20 Comment
  CDA34560  Pyracantha koidzumii L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC115352  Pyracantha koidzumii Lowell Ahart 2015-1-27 19929 Butte On the northwest side of Larkin Road, about 200 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 35 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  UC474249  Pyrola asarifolia H. F. Copeland 1930-7-27 Butte Jonesville Comment
  UC709717 Image available Pyrola dentata var. apophylla H. F. Copeland 1935-7-28 Butte woods by Mickey's cabin Jonesville; Jonesville, Butte Co. 1550 Comment
  CAS-BOT-BC94693  Quercus X howellii John Thomas Howell 1955-6-15 30498 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC109088  Quercus X morehus Lowell Ahart 2012-4-20 17894 Butte On the north side of the drainage, about 100 yards west of the intersection of Ten Mile House Road and South Rim Trail, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  RSA726483  Quercus berberidifolia L. Ahart 2007-4-30 13707 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  CDA13880  Quercus chrysolepis var. chrysolepis G. F. Hrusa, T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada; Near summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. and Comment
  CHSC109617  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18119 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
  JEPS117279  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  SEINET10477873  Quercus dumosa Mary Susan Taylor Taylor 995 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC62798  Quercus garryana John Thomas Howell 1955-6-15 30500 Butte 6 miles form Paradise on road to Pentz 426 Comment
  UCD46184  Quercus garryana H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico, Butte County. Comment
  CHSC624  Quercus kelloggii M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CDA21949  Quercus lobata L. Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS117323  Quercus lobata Lowell Ahart 2010-6-12 16803 A Butte North side of the pond and table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  SEINET10477291  Quercus lobata Mary Susan Taylor 1975-5-6 Taylor 558 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC90046  Quercus wislizeni Rhonda Posey 1991-4-16 19 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- Ranch. Comment
  CAS-BOT-BC186693  Ranunculus John Thomas Howell 1976-4-2 51548 Butte About 2 miles southeast of Chico 60 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 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
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC45399  Ranunculus bonariensis var. trisepalus Lowell Ahart 1974-4-7 357 Butte In a pond, Peter Ahart Ranch, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC85006  Ranunculus bonariensis var. trisepalus Tom Boullion 2002-5-14 Butte Sacramento Valley. In the southeast corner of the junction of Hwy 99 and Hwy 162 (eastward), about 6.5 miles west of Oroville. In a vernal pool n grassland next to gravel road. 33 Comment
  JEPS84978  Ranunculus bonariensis var. trisepalus Barbara Ertter with Lowell Ahart 1986-4-13 5901 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  SEINET12087494  Ranunculus canus A. A. Heller, Brown, H. E. 1902-1 s.n. Butte near Nelson Comment
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  CHSC45753  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 36 Butte N part of county at Crane Valley; in meadow. 1584 Comment
  CHSC50056  Ranunculus hebecarpus Lowell Ahart 1990-3-19 6421 Butte At the base of banks along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  JEPS43466  Ranunculus occidentalis Joan O. Danielson 1966-4-6 6 Butte Cherokee Rd. 1 mi. s. on way to Table Mt. 609 Comment
  UC176135  Ranunculus occidentalis A. A. Heller 1913-4-5 10705 Butte above Oroville (n side of Feather River) Comment
  UCD96841  Ranunculus occidentalis P. Thompson 1996-4-26 42 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CHSC24679  Ranunculus occidentalis var. occidentalis Keith Lickey 1976-3-27 48 Butte On e side of Hwy 70, 1.25 km n of Pinkston Canyon Rd. 609 Comment
  CHSC533  Raphanus raphanistrum V. Holt 1935-3-27 Butte Sandy Gulch, Chico. 54 Comment
  CAS-BOT-BC59570  Rhamnus John Thomas Howell 1975-6-15 51118 Butte Sierra Nevada - Paradise - Skyway near Billie Road 609 Comment
  CDA13885  Rhamnus ilicifolia G. F. Hrusa, T. D. Wilfred 1997-5-8 13743 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  CHSC1526  Rhamnus tomentella subsp. tomentella L. Stone 1930-4-20 Butte Lower Big Chico Creek canyon. 121 Comment
  UC175522  Rhododendron occidentale A. A. Heller 1913-6-7 10800 Butte near Stirling 1074 Comment
  JEPS98291  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS98301  Rhynchospora capitellata Lowell Ahart 2000-6-27 8521 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  SBBG28495  Ribes inerme E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  CAS-BOT-BC212669  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  LA205496  Ribes roezlii E. B. Copeland; 1931-5-9 sn Butte Jonesville 1500.0 Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  SEINET10971250  Rigiopappus leptocladus Mary Susan Taylor 1981-5-21 Taylor 3770 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
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS120597  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-17 19261 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC112717  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS120598  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC35645  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 229 Butte Western Canal, at jct with the Midway ca. 0.75 mi s of Nelson. 35 Comment
  CHSC65428  Rosa bridgesii Vernon Oswald 1987-5-28 2939 Butte Concow Rd. 0.4 mi s of Flea Valley. 1097 Comment
  CHSC109649  Rosa californica Lowell Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Prk. 77 Comment
  CAS-BOT-BC148123  Rosa gymnocarpa C. R. Quick 1942-8-5 42 -45 Butte Big Bar Mt. east of Pulga Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  UC1862497  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 a Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC6629  Rosa spithamea M. MacArthur 1968-6-17 301 Butte NW yard of Building U on the Chico State College campus. 60 Comment
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  CHSC47447  Rotala ramosior Lowell Ahart 1975-7-19 899 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98345  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  UC1586509  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1991-8-28 4849 Butte 3.5 mi nw of Biggs (Rice Experimeent Station on s side of Highway 162); Rice Experimeent Station, Highway 162 30 Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 Comment
  CHSC95081  Rubus glaucifolius L. P. Janeway 2006-6-25 8705 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  CHSC45812  Rubus laciniatus L. P. Janeway 1987-6-13 2201 Butte Southeast side of Concow Rd at Flea Valley. Along Flea Valley Cr. 1127 Comment
  UC136459  Rubus parviflorus Mrs. R. M. Austin July 1899 779 Butte Colby Comment
  CHSC65434  Rubus pensilvanicus Vernon Oswald 1987-4-15 2329 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi n of Butte Creek Bridge. 65 Comment
  UC1562345  Rudbeckia occidentalis Vernon Oswald and Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi N of Concow. 1097 Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  RSA754881  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC38625  Rumex crispus Vernon Oswald 1983-6-2 613 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  JEPS119760  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 & 10, Lower Bidwell Park, Chico. 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
  CHSC31546  Sagina decumbens subsp. occidentalis L. Ahart 1978-3-19 1615 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48262  Sagina saginoides Vernon Oswald 1984-5-23 1199 Butte Near the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 512 Comment
  CHSC2053  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  CHSC113369  Salix babylonica Lowell Ahart 2014-4-9 19348 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS102545  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  UC478541  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte meadows by Butte Creek Jonesville (meadow below house) 1500 Comment
  CAS-BOT-BC107831  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico Comment
  CAS-BOT-BC104075  Salix hindsiana Lowell Ahart 1987-4-30 5491 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC106984  Salix lasiolepis Lowell Ahart 1987-4-30 5492 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC108840  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte Wet are in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little Chico Comment
  CAS-BOT-BC129584  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  UC478539  Salix lemmonii E. B. Copeland 1931-8-1 401 Butte about the Lily Pond Jonesville 1700 Comment
  SD932  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CAS-BOT-BC125950  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  CDA42945  Salsola tragus L. Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  JEPS95990  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-10-3 8295 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
  UC883824  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  POM67636  Sambucus caerulea C. C. Bruce 1897-05 1821 Butte Little Chico Comment
  CHSC81481  Sambucus mexicana Sabrina Wright; Alvin Myers 2000-5-7 Butte Chico. Upper Bidwell Park on Arena Rd. 60 Comment
  CDA42912  Sambucus nigra subsp. caerulea L. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 12 & 13, Lower Bidwell Park, Chico. Comment
  JEPS119722  Sambucus nigra subsp. caerulea Lowell Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC36558  Samolus parviflorus L. Ahart 1982-8-22 3758 Butte Along edge of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  SD149113  Samolus parviflorus Lowell Ahart 1980-8-16 2579 Butte Near Honcut 60 Comment
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  JEPS115317  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC96789  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir. 637 Comment
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  UC858207  Saxifraga oregana A. A. Heller 1914-6-22 11493 Butte Chico meadows Chico 1219 Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  SEINET10466946  Scirpus acutus Mary Susan Taylor 1982-4-28 Taylor 4367 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC113382  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  NY380581  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  UC203851  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows (at base of n slope); Sierra Nevada at Chico Meadows 1219 Comment
  UC1100920  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge Comment
  CHSC57210  Scirpus microcarpus L. P. Janeway; R. A. Schlising 1988-7-16 3002 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  SEINET10905684  Scirpus setaceus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4047 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
  CHSC98953  Scleranthus annuus subsp. annuus Lowell Ahart 2008-5-12 14743 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
  CAS-BOT-BC239963  Scribneria bolanderi Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC38147  Scribneria bolanderi J. D. Jokerst 1983-5-12 1758 Butte North Table Mountain. 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
  UC1563260  Scrophularia californica subsp. floribunda unknown 1990-10-21 6634 Butte 1/2 mi w Gold Flat (ca 1 mi n of Nelson Bar Rd, Lake Oroville) 243 Comment
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  CHSC799  Scutellaria siphocampyloides R. Carter 1964-6-12 121 Butte Ca. 24 mi. E of Oroville on Lower Forbestown Rd. 3 mi. N of Olive Hwy. on E side of road. 60 Comment
  CHSC33588  Scutellaria tuberosa M. S. Taylor 1981-4-28 3565 Butte N side of rd 23N28.2 in loop of the rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. ca. 23 air mi nw of Oroville. 929 Comment
  CHSC59326  Scutellaria tuberosa J. L. Guardino 1992-4-16 5 Butte Paradise, 1/4 mi s of Circle Dr., terminus. 472 Comment
  CHSC3952  Sedella pumila E. P. Parreno 1967-4-3 Butte Tabletop Mt. Comment
  HSC23383  Sedella pumila Larry D. Scott 1971-4-7 4 Butte 4 mi. NE of Chico, 20 yds. N of Skyway Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  CAS-BOT-BC63855  Sedum spathulifolium Elizabeth McClintock 1965-4-4 s.n. Butte West fork of North Fork of Feather River, in canyon. 396 Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  UC1410118  Sedum spathulifolium Elizabeth McClintock 1965-4-4 Butte canyon of the west fork of the North Ford of the Feather River canyon of the west fork North Ford Feather River 365 Comment
  CHSC94036  Senecio aronicoides R. D. Fischer 2005-4-30 718 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy west facing slope. 518 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA712950  Senecio eurycephalus var. lewisrosei L. Ahart 2006-5-10 12616 Butte Bardees Bar Road, about 100 yards north of poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of pulga. 355 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 Comment
  CHSC108815  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC30364  Senecio sylvaticus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 691 Butte Top of North Table Mt, 100 E of waterfalls of the S branch of Coal Cr. 365 Comment
  JEPS118584  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Brush Creek 7.5' quad. Comment
  CHSC19942  Senecio vulgaris M. S. Taylor 1975-3-26 428 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC42456  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  UC832202  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC243561  Setaria parviflora Lowell Ahart 1987-9-24 5899 Butte Along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC78228  Setaria parviflora Lowell Ahart 2000-5-17 8365 Butte Near the south margin of the Thermalito Afterbay, north of the poor dirt road, about 1/10 mile north of the Richville Highway, about 1/2 mle east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  CAS-BOT-BC240123  Setaria pumila Lowell Ahart 1981-9-19 3190 Butte Cresta Power House 550 Comment
  CHSC69740  Setaria pumila Lowell Ahart 1997-10-24 7936 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  JEPS115349  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC12128  Sherardia arvensis J. M. Pitts 1972-4-15 110 Butte Ca 8 mi from Cherokeeon top of Table Mountain. 274 Comment
  UCD169267  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70, ca. 4 air miles NW of Oroville. 91 Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC29409  Sidalcea calycosa R. A. Schlising 1980-6-1 3612 Butte S of Paradise at Kunkle Res., off Magalia Hwy. 440 Comment
  CHSC39887  Sidalcea calycosa M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  UC725657  Sidalcea calycosa subsp. calycosa A. A. Heller 1942-5-17 16471 Butte on Chico Oroville Road about a half mi w Wick's Corner; w of Wick's Corner on Chico Oroville Road Comment
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  CHSC71543  Sidalcea glaucescens Vernon H. Oswald 1998-7-26 9364 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. On the edge of the road. 1560 Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC59328  Sidalcea hartwegii J. L. Guardino 1992-4-18 14 Butte Grassy area 20 ft s of ephemeral stream. Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  JEPS104600  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC50663  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  RSA755001  Silene antirrhina L. Ahart 2008-5-21 14773 Butte Lake Oroville, north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 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
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  CAS-BOT-BC387074  Silene gallica M. S. Taylor 1982-5-2 4390 Butte N side of Hwy 70, at Pulga bridge, ca. 20 mi NE of Oroville. 487 Comment
  CHSC32665  Silene lemmonii M. S. Taylor 1981-3-24 3436 Butte S side of Hwy 70, ca. 1/2 mi w of Cresta Powerhouse, ca. 1.5 mi e of Pulga. 487 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC35760  Sisymbrium altissimum R. E. Preston 1982-6-18 302 Butte In meadow; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  JEPS115623  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC31639  Sisyrinchium bellum L. Ahart 1977-5-20 1385 Butte Along edge of a small wash. Peter Ahart Ranch, Honcut. 60 Comment
  JEPS108778  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 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
  SEINET10472650  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1979-7-21 Taylor 2152 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 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
  UC1125062  Solanum umbelliferum C. G. Albertus 1933-6-26 32 Butte 1/2 mi s of Nelson's Bar 365 Comment
  CAS-BOT-BC365381  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC43174  Solidago elongata Robert Banchero 1981-7-24 627 Butte Chico Meadows, 0.95 mi n of jct Humboldt Rd and Skyway. 1316 Comment
  JEPS110090  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows 1516 Comment
  LA203953  Solidago elongata E. B. Copeland; 1930-8-27 499 Butte Jonesville 1500.0 Comment
  UCD136103  Soliva sessilis H. Clem Meith 1961-4-4 s.n. Butte Oroville. Comment
  CAS-BOT-BC365984  Sonchus asper Lowell Ahart 1980-5-4 2156 Butte Thermalito 65 Comment
  JEPS119796  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC35221  Sorbus scopulina M. S. Taylor 1981-5-13 3706 Butte Jct of 23N15.5, 22N66X, and 22N40, ca. 2 air mi s of Four Trees Rd, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Shy. 1280 Comment
  UC573852  Sorghum halepense H. S. Yates 1936-8-19 6124 Butte 10 mi. s. Durham; Chico Quad. Comment
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Nov 12 2007
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  UC1562291  Spergularia rubra Lowell Ahart 1990-7-4 6548 Butte along creek about 1/2 mi sw Enterprise Bridge across lake (below high water line of lake); Lake Oroville, McCabe Creek 243 Comment
  UC478509  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit 2100 Comment
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 Comment
  CHSC102516  Spiranthes porrifolia Lowell Ahart 2009-5-30 15961 Butte Along a small drainage west of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC44405  Stachys ajugoides var. rigida Lowell Ahart 1988-6-21 6046 a Butte Along the edge of North Fork Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC65426  Stachys ajugoides var. rigida Vernon Oswald 1983-7-19 875 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. 822 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CHSC88063  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC70805  Stachys pycnantha H. Durio 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  SEINET10537521  Stellaria media Mary Susan Taylor 1975-3-25 Taylor 426 Butte Chico. Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CAS-BOT-BC405342  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  JEPS120098  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  CAS-BOT-BC87387  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  CHSC94242  Streptanthus longisiliquus Lowell Ahart 2006-7-16 12958 A Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC87427  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC35749  Streptanthus polygaloides R. E. Preston 1982-5-18 285 Butte Ca. 0.5